cpython-lru_cache-weakref: Modules/parsermodule.c annotate

annotate Modules/parsermodule.c @ 6440:42bc792ac69f legacy-trunk

initparser(): Use PyErr_NewException() to create the exception.

author	Fred Drake <fdrake@acm.org>
date	Tue, 07 Oct 1997 19:32:00 +0000
parents	0e7e20049637
children	c142eb533fb9

rev	line source
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1 /* parsermodule.c
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2 *
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	3 * Copyright 1995-1996 by Fred L. Drake, Jr. and Virginia Polytechnic
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	4 * Institute and State University, Blacksburg, Virginia, USA.
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	5 * Portions copyright 1991-1995 by Stichting Mathematisch Centrum,
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	6 * Amsterdam, The Netherlands. Copying is permitted under the terms
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	7 * associated with the main Python distribution, with the additional
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	8 * restriction that this additional notice be included and maintained
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	9 * on all distributed copies.
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	10 *
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	11 * This module serves to replace the original parser module written
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	12 * by Guido. The functionality is not matched precisely, but the
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	13 * original may be implemented on top of this. This is desirable
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	14 * since the source of the text to be parsed is now divorced from
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	15 * this interface.
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	16 *
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	17 * Unlike the prior interface, the ability to give a parse tree
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	18 * produced by Python code as a tuple to the compiler is enabled by
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	19 * this module. See the documentation for more details.
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	20 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	21
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	22 #include "Python.h" /* general Python API */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	23 #include "graminit.h" /* symbols defined in the grammar */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	24 #include "node.h" /* internal parser structure */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	25 #include "token.h" /* token definitions */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	26 /* ISTERMINAL() / ISNONTERMINAL() */
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	27 #include "compile.h" /* PyNode_Compile() */
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	28
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	29
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	30 /* String constants used to initialize module attributes.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	31 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	32 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	33 static char*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	34 parser_copyright_string
4099 3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	35 = "Copyright 1995-1996 by Virginia Polytechnic Institute & State\n\
3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	36 University, Blacksburg, Virginia, USA, and Fred L. Drake, Jr., Reston,\n\
3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	37 Virginia, USA. Portions copyright 1991-1995 by Stichting Mathematisch\n\
3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	38 Centrum, Amsterdam, The Netherlands.";
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	39
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	40
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	41 static char*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	42 parser_doc_string
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	43 = "This is an interface to Python's internal parser.";
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	44
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	45 static char*
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	46 parser_version_string = "0.4";
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	47
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	48
4099 3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	49 typedef PyObject* (*SeqMaker) Py_PROTO((int length));
3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	50 typedef void (SeqInserter) Py_PROTO((PyObject sequence,
3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	51 int index,
3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	52 PyObject* element));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	53
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	54 /* The function below is copyrigthed by Stichting Mathematisch Centrum. The
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	55 * original copyright statement is included below, and continues to apply
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	56 * in full to the function immediately following. All other material is
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	57 * original, copyrighted by Fred L. Drake, Jr. and Virginia Polytechnic
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	58 * Institute and State University. Changes were made to comply with the
4099 3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	59 * new naming conventions. Added arguments to provide support for creating
3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	60 * lists as well as tuples, and optionally including the line numbers.
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	61 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	62
1406 474823e5f7dc * parsermodule.c, Makefile, config.c: rudimentary interface to the Python Guido van Rossum <guido@python.org> parents: diff changeset	63 /***********************************************************
2061 172ba04a5191 Added 1995 to copyright message. Guido van Rossum <guido@python.org> parents: 2055 diff changeset	64 Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
172ba04a5191 Added 1995 to copyright message. Guido van Rossum <guido@python.org> parents: 2055 diff changeset	65 The Netherlands.
1406 474823e5f7dc * parsermodule.c, Makefile, config.c: rudimentary interface to the Python Guido van Rossum <guido@python.org> parents: diff changeset	66
474823e5f7dc * parsermodule.c, Makefile, config.c: rudimentary interface to the Python Guido van Rossum <guido@python.org> parents: diff changeset	67 All Rights Reserved
474823e5f7dc * parsermodule.c, Makefile, config.c: rudimentary interface to the Python Guido van Rossum <guido@python.org> parents: diff changeset	68
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	69 Permission to use, copy, modify, and distribute this software and its
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	70 documentation for any purpose and without fee is hereby granted,
1406 474823e5f7dc * parsermodule.c, Makefile, config.c: rudimentary interface to the Python Guido van Rossum <guido@python.org> parents: diff changeset	71 provided that the above copyright notice appear in all copies and that
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	72 both that copyright notice and this permission notice appear in
1406 474823e5f7dc * parsermodule.c, Makefile, config.c: rudimentary interface to the Python Guido van Rossum <guido@python.org> parents: diff changeset	73 supporting documentation, and that the names of Stichting Mathematisch
4503 65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4287 diff changeset	74 Centrum or CWI or Corporation for National Research Initiatives or
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4287 diff changeset	75 CNRI not be used in advertising or publicity pertaining to
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4287 diff changeset	76 distribution of the software without specific, written prior
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4287 diff changeset	77 permission.
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4287 diff changeset	78
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4287 diff changeset	79 While CWI is the initial source for this software, a modified version
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4287 diff changeset	80 is made available by the Corporation for National Research Initiatives
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4287 diff changeset	81 (CNRI) at the Internet address ftp://ftp.python.org.
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4287 diff changeset	82
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4287 diff changeset	83 STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4287 diff changeset	84 REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4287 diff changeset	85 MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4287 diff changeset	86 CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4287 diff changeset	87 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4287 diff changeset	88 PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4287 diff changeset	89 TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4287 diff changeset	90 PERFORMANCE OF THIS SOFTWARE.
1406 474823e5f7dc * parsermodule.c, Makefile, config.c: rudimentary interface to the Python Guido van Rossum <guido@python.org> parents: diff changeset	91
474823e5f7dc * parsermodule.c, Makefile, config.c: rudimentary interface to the Python Guido van Rossum <guido@python.org> parents: diff changeset	92 ******************************************************************/
474823e5f7dc * parsermodule.c, Makefile, config.c: rudimentary interface to the Python Guido van Rossum <guido@python.org> parents: diff changeset	93
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	94 static PyObject*
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	95 node2tuple(n, mkseq, addelem, lineno)
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	96 node n; / node to convert */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	97 SeqMaker mkseq; /* create sequence */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	98 SeqInserter addelem; /* func. to add elem. in seq. */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	99 int lineno; /* include line numbers? */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	100 {
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	101 if (n == NULL) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	102 Py_INCREF(Py_None);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	103 return Py_None;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	104 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	105 if (ISNONTERMINAL(TYPE(n))) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	106 int i;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	107 PyObject v, w;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	108 v = mkseq(1 + NCH(n));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	109 if (v == NULL)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	110 return v;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	111 w = PyInt_FromLong(TYPE(n));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	112 if (w == NULL) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	113 Py_DECREF(v);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	114 return NULL;
1406 474823e5f7dc * parsermodule.c, Makefile, config.c: rudimentary interface to the Python Guido van Rossum <guido@python.org> parents: diff changeset	115 }
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	116 addelem(v, 0, w);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	117 for (i = 0; i < NCH(n); i++) {
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	118 w = node2tuple(CHILD(n, i), mkseq, addelem, lineno);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	119 if (w == NULL) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	120 Py_DECREF(v);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	121 return NULL;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	122 }
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	123 addelem(v, i+1, w);
1406 474823e5f7dc * parsermodule.c, Makefile, config.c: rudimentary interface to the Python Guido van Rossum <guido@python.org> parents: diff changeset	124 }
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	125 return (v);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	126 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	127 else if (ISTERMINAL(TYPE(n))) {
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	128 PyObject *result = mkseq(2 + lineno);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	129 if (result != NULL) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	130 addelem(result, 0, PyInt_FromLong(TYPE(n)));
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	131 addelem(result, 1, PyString_FromString(STR(n)));
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	132 if (lineno == 1)
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	133 addelem(result, 2, PyInt_FromLong(n->n_lineno));
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	134 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	135 return (result);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	136 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	137 else {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	138 PyErr_SetString(PyExc_SystemError,
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	139 "unrecognized parse tree node type");
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	140 return NULL;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	141 }
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	142 } /* node2tuple() */
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	143 /*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	144 * End of material copyrighted by Stichting Mathematisch Centrum.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	145 */
1406 474823e5f7dc * parsermodule.c, Makefile, config.c: rudimentary interface to the Python Guido van Rossum <guido@python.org> parents: diff changeset	146
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	147
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	148
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	149 /* There are two types of intermediate objects we're interested in:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	150 * 'eval' and 'exec' types. These constants can be used in the ast_type
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	151 * field of the object type to identify which any given object represents.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	152 * These should probably go in an external header to allow other extensions
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	153 * to use them, but then, we really should be using C++ too. ;-)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	154 *
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	155 * The PyAST_FRAGMENT type is not currently supported. Maybe not useful?
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	156 * Haven't decided yet.
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	157 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	158
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	159 #define PyAST_EXPR 1
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	160 #define PyAST_SUITE 2
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	161 #define PyAST_FRAGMENT 3
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	162
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	163
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	164 /* These are the internal objects and definitions required to implement the
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	165 * AST type. Most of the internal names are more reminiscent of the 'old'
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	166 * naming style, but the code uses the new naming convention.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	167 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	168
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	169 static PyObject*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	170 parser_error = 0;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	171
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	172
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	173 typedef struct _PyAST_Object {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	174
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	175 PyObject_HEAD /* standard object header */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	176 node* ast_node; /* the node* returned by the parser */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	177 int ast_type; /* EXPR or SUITE ? */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	178
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	179 } PyAST_Object;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	180
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	181
4099 3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	182 staticforward void parser_free Py_PROTO((PyAST_Object *ast));
3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	183 staticforward int parser_compare Py_PROTO((PyAST_Object *left,
3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	184 PyAST_Object *right));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	185
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	186
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	187 /* static */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	188 PyTypeObject PyAST_Type = {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	189
5039 38032267968c Initialize the ob_type field of PyAST_Type dynamically (in Guido van Rossum <guido@python.org> parents: 4600 diff changeset	190 PyObject_HEAD_INIT(NULL)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	191 0,
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	192 "ast", /* tp_name */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	193 sizeof(PyAST_Object), /* tp_basicsize */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	194 0, /* tp_itemsize */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	195 (destructor)parser_free, /* tp_dealloc */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	196 0, /* tp_print */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	197 0, /* tp_getattr */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	198 0, /* tp_setattr */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	199 (cmpfunc)parser_compare, /* tp_compare */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	200 0, /* tp_repr */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	201 0, /* tp_as_number */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	202 0, /* tp_as_sequence */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	203 0, /* tp_as_mapping */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	204 0, /* tp_hash */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	205 0, /* tp_call */
5613 190e35bbc15a Add doc string to type object. Fred Drake <fdrake@acm.org> parents: 5236 diff changeset	206 0, /* tp_str */
190e35bbc15a Add doc string to type object. Fred Drake <fdrake@acm.org> parents: 5236 diff changeset	207 0, /* tp_getattro */
190e35bbc15a Add doc string to type object. Fred Drake <fdrake@acm.org> parents: 5236 diff changeset	208 0, /* tp_setattro */
190e35bbc15a Add doc string to type object. Fred Drake <fdrake@acm.org> parents: 5236 diff changeset	209
190e35bbc15a Add doc string to type object. Fred Drake <fdrake@acm.org> parents: 5236 diff changeset	210 /* Functions to access object as input/output buffer */
190e35bbc15a Add doc string to type object. Fred Drake <fdrake@acm.org> parents: 5236 diff changeset	211 0, /* tp_as_buffer */
190e35bbc15a Add doc string to type object. Fred Drake <fdrake@acm.org> parents: 5236 diff changeset	212
190e35bbc15a Add doc string to type object. Fred Drake <fdrake@acm.org> parents: 5236 diff changeset	213 /* Space for future expansion */
190e35bbc15a Add doc string to type object. Fred Drake <fdrake@acm.org> parents: 5236 diff changeset	214 0, /* tp_xxx4 */
190e35bbc15a Add doc string to type object. Fred Drake <fdrake@acm.org> parents: 5236 diff changeset	215
190e35bbc15a Add doc string to type object. Fred Drake <fdrake@acm.org> parents: 5236 diff changeset	216 /* __doc__ */
190e35bbc15a Add doc string to type object. Fred Drake <fdrake@acm.org> parents: 5236 diff changeset	217 "Intermediate representation of a Python parse tree."
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	218
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	219 }; /* PyAST_Type */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	220
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	221
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	222 static int
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	223 parser_compare_nodes(left, right)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	224 node *left;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	225 node *right;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	226 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	227 int j;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	228
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	229 if (TYPE(left) < TYPE(right))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	230 return (-1);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	231
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	232 if (TYPE(right) < TYPE(left))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	233 return (1);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	234
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	235 if (ISTERMINAL(TYPE(left)))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	236 return (strcmp(STR(left), STR(right)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	237
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	238 if (NCH(left) < NCH(right))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	239 return (-1);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	240
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	241 if (NCH(right) < NCH(left))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	242 return (1);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	243
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	244 for (j = 0; j < NCH(left); ++j) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	245 int v = parser_compare_nodes(CHILD(left, j), CHILD(right, j));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	246
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	247 if (v)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	248 return (v);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	249 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	250 return (0);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	251
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	252 } /* parser_compare_nodes() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	253
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	254
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	255 /* int parser_compare(PyAST_Object* left, PyAST_Object* right)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	256 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	257 * Comparison function used by the Python operators ==, !=, <, >, <=, >=
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	258 * This really just wraps a call to parser_compare_nodes() with some easy
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	259 * checks and protection code.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	260 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	261 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	262 static int
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	263 parser_compare(left, right)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	264 PyAST_Object *left;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	265 PyAST_Object *right;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	266 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	267 if (left == right)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	268 return (0);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	269
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	270 if ((left == 0) \|\| (right == 0))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	271 return (-1);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	272
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	273 return (parser_compare_nodes(left->ast_node, right->ast_node));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	274
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	275 } /* parser_compare() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	276
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	277
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	278 /* parser_newastobject(node* ast)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	279 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	280 * Allocates a new Python object representing an AST. This is simply the
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	281 * 'wrapper' object that holds a node* and allows it to be passed around in
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	282 * Python code.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	283 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	284 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	285 static PyObject*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	286 parser_newastobject(ast, type)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	287 node *ast;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	288 int type;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	289 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	290 PyAST_Object* o = PyObject_NEW(PyAST_Object, &PyAST_Type);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	291
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	292 if (o != 0) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	293 o->ast_node = ast;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	294 o->ast_type = type;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	295 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	296 return ((PyObject*)o);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	297
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	298 } /* parser_newastobject() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	299
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	300
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	301 /* void parser_free(PyAST_Object* ast)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	302 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	303 * This is called by a del statement that reduces the reference count to 0.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	304 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	305 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	306 static void
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	307 parser_free(ast)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	308 PyAST_Object *ast;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	309 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	310 PyNode_Free(ast->ast_node);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	311 PyMem_DEL(ast);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	312
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	313 } /* parser_free() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	314
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	315
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	316 /* parser_ast2tuple(PyObject* self, PyObject* args)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	317 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	318 * This provides conversion from a node* to a tuple object that can be
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	319 * returned to the Python-level caller. The AST object is not modified.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	320 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	321 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	322 static PyObject*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	323 parser_ast2tuple(self, args)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	324 PyObject *self;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	325 PyObject *args;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	326 {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	327 PyObject *ast;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	328 PyObject *line_option = 0;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	329 PyObject *res = 0;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	330
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	331 if (PyArg_ParseTuple(args, "O!\|O:ast2tuple", &PyAST_Type, &ast,
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	332 &line_option)) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	333 int lineno = 0;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	334 if (line_option != 0) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	335 lineno = PyObject_IsTrue(line_option);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	336 lineno = lineno ? 1 : 0;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	337 }
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	338 /*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	339 * Convert AST into a tuple representation. Use Guido's function,
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	340 * since it's known to work already.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	341 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	342 res = node2tuple(((PyAST_Object*)ast)->ast_node,
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	343 PyTuple_New, PyTuple_SetItem, lineno);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	344 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	345 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	346
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	347 } /* parser_ast2tuple() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	348
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	349
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	350 /* parser_ast2tuple(PyObject* self, PyObject* args)
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	351 *
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	352 * This provides conversion from a node* to a tuple object that can be
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	353 * returned to the Python-level caller. The AST object is not modified.
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	354 *
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	355 */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	356 static PyObject*
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	357 parser_ast2list(self, args)
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	358 PyObject *self;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	359 PyObject *args;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	360 {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	361 PyObject *ast;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	362 PyObject *line_option = 0;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	363 PyObject *res = 0;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	364
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	365 if (PyArg_ParseTuple(args, "O!\|O:ast2list", &PyAST_Type, &ast,
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	366 &line_option)) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	367 int lineno = 0;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	368 if (line_option != 0) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	369 lineno = PyObject_IsTrue(line_option);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	370 lineno = lineno ? 1 : 0;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	371 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	372 /*
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	373 * Convert AST into a tuple representation. Use Guido's function,
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	374 * since it's known to work already.
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	375 */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	376 res = node2tuple(((PyAST_Object*)ast)->ast_node,
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	377 PyList_New, PyList_SetItem, lineno);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	378 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	379 return (res);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	380
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	381 } /* parser_ast2list() */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	382
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	383
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	384 /* parser_compileast(PyObject* self, PyObject* args)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	385 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	386 * This function creates code objects from the parse tree represented by
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	387 * the passed-in data object. An optional file name is passed in as well.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	388 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	389 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	390 static PyObject*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	391 parser_compileast(self, args)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	392 PyObject *self;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	393 PyObject *args;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	394 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	395 PyAST_Object* ast;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	396 PyObject* res = 0;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	397 char* str = "<ast>";
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	398
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	399 if (PyArg_ParseTuple(args, "O!\|s", &PyAST_Type, &ast, &str))
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	400 res = (PyObject*) PyNode_Compile(ast->ast_node, str);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	401
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	402 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	403
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	404 } /* parser_compileast() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	405
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	406
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	407 /* PyObject* parser_isexpr(PyObject* self, PyObject* args)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	408 * PyObject* parser_issuite(PyObject* self, PyObject* args)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	409 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	410 * Checks the passed-in AST object to determine if it is an expression or
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	411 * a statement suite, respectively. The return is a Python truth value.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	412 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	413 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	414 static PyObject*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	415 parser_isexpr(self, args)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	416 PyObject *self;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	417 PyObject *args;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	418 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	419 PyAST_Object* ast;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	420 PyObject* res = 0;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	421
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	422 if (PyArg_ParseTuple(args, "O!:isexpr", &PyAST_Type, &ast)) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	423 /*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	424 * Check to see if the AST represents an expression or not.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	425 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	426 res = (ast->ast_type == PyAST_EXPR) ? Py_True : Py_False;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	427 Py_INCREF(res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	428 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	429 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	430
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	431 } /* parser_isexpr() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	432
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	433
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	434 static PyObject*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	435 parser_issuite(self, args)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	436 PyObject *self;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	437 PyObject *args;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	438 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	439 PyAST_Object* ast;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	440 PyObject* res = 0;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	441
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	442 if (PyArg_ParseTuple(args, "O!:issuite", &PyAST_Type, &ast)) {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	443 /*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	444 * Check to see if the AST represents an expression or not.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	445 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	446 res = (ast->ast_type == PyAST_EXPR) ? Py_False : Py_True;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	447 Py_INCREF(res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	448 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	449 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	450
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	451 } /* parser_issuite() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	452
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	453
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	454 /* err_string(char* message)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	455 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	456 * Sets the error string for an exception of type ParserError.
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	457 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	458 */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	459 static void
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	460 err_string(message)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	461 char *message;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	462 {
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	463 PyErr_SetString(parser_error, message);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	464
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	465 } /* err_string() */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	466
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	467
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	468 /* PyObject* parser_do_parse(PyObject* args, int type)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	469 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	470 * Internal function to actually execute the parse and return the result if
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	471 * successful, or set an exception if not.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	472 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	473 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	474 static PyObject*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	475 parser_do_parse(args, type)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	476 PyObject *args;
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	477 int type;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	478 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	479 char* string = 0;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	480 PyObject* res = 0;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	481
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	482 if (PyArg_ParseTuple(args, "s", &string)) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	483 node* n = PyParser_SimpleParseString(string,
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	484 (type == PyAST_EXPR)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	485 ? eval_input : file_input);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	486
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	487 if (n != 0)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	488 res = parser_newastobject(n, type);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	489 else
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	490 err_string("Could not parse string.");
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	491 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	492 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	493
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	494 } /* parser_do_parse() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	495
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	496
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	497 /* PyObject* parser_expr(PyObject* self, PyObject* args)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	498 * PyObject* parser_suite(PyObject* self, PyObject* args)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	499 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	500 * External interfaces to the parser itself. Which is called determines if
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	501 * the parser attempts to recognize an expression ('eval' form) or statement
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	502 * suite ('exec' form). The real work is done by parser_do_parse() above.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	503 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	504 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	505 static PyObject*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	506 parser_expr(self, args)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	507 PyObject *self;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	508 PyObject *args;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	509 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	510 return (parser_do_parse(args, PyAST_EXPR));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	511
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	512 } /* parser_expr() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	513
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	514
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	515 static PyObject*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	516 parser_suite(self, args)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	517 PyObject *self;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	518 PyObject *args;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	519 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	520 return (parser_do_parse(args, PyAST_SUITE));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	521
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	522 } /* parser_suite() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	523
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	524
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	525
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	526 /* This is the messy part of the code. Conversion from a tuple to an AST
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	527 * object requires that the input tuple be valid without having to rely on
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	528 * catching an exception from the compiler. This is done to allow the
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	529 * compiler itself to remain fast, since most of its input will come from
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	530 * the parser directly, and therefore be known to be syntactically correct.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	531 * This validation is done to ensure that we don't core dump the compile
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	532 * phase, returning an exception instead.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	533 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	534 * Two aspects can be broken out in this code: creating a node tree from
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	535 * the tuple passed in, and verifying that it is indeed valid. It may be
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	536 * advantageous to expand the number of AST types to include funcdefs and
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	537 * lambdadefs to take advantage of the optimizer, recognizing those ASTs
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	538 * here. They are not necessary, and not quite as useful in a raw form.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	539 * For now, let's get expressions and suites working reliably.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	540 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	541
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	542
4099 3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	543 staticforward node* build_node_tree Py_PROTO((PyObject *tuple));
3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	544 staticforward int validate_expr_tree Py_PROTO((node *tree));
3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	545 staticforward int validate_file_input Py_PROTO((node *tree));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	546
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	547
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	548 /* PyObject* parser_tuple2ast(PyObject* self, PyObject* args)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	549 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	550 * This is the public function, called from the Python code. It receives a
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	551 * single tuple object from the caller, and creates an AST object if the
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	552 * tuple can be validated. It does this by checking the first code of the
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	553 * tuple, and, if acceptable, builds the internal representation. If this
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	554 * step succeeds, the internal representation is validated as fully as
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	555 * possible with the various validate_*() routines defined below.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	556 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	557 * This function must be changed if support is to be added for PyAST_FRAGMENT
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	558 * AST objects.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	559 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	560 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	561 static PyObject*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	562 parser_tuple2ast(self, args)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	563 PyObject *self;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	564 PyObject *args;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	565 {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	566 PyObject *ast = 0;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	567 PyObject *tuple = 0;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	568 PyObject *temp = 0;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	569 int ok;
4600 d36250aefb82 Keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	570 int start_sym = 0;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	571
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	572 if (!PyArg_ParseTuple(args, "O:tuple2ast", &tuple))
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	573 return (0);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	574 if (!PySequence_Check(tuple)) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	575 PyErr_SetString(PyExc_ValueError,
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	576 "tuple2ast() requires a single sequence argument");
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	577 return (0);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	578 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	579 /*
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	580 * This mess of tests is written this way so we can use the abstract
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	581 * object interface (AOI). Unfortunately, the AOI increments reference
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	582 * counts, which requires that we store a pointer to retrieved object
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	583 * so we can DECREF it after the check. But we really should accept
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	584 * lists as well as tuples at the very least.
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	585 */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	586 ok = PyObject_Length(tuple) >= 2;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	587 if (ok) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	588 temp = PySequence_GetItem(tuple, 0);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	589 ok = (temp != NULL) && PyInt_Check(temp);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	590 if (ok)
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	591 /* this is used after the initial checks: */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	592 start_sym = PyInt_AsLong(temp);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	593 Py_XDECREF(temp);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	594 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	595 if (ok) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	596 temp = PySequence_GetItem(tuple, 1);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	597 ok = (temp != NULL) && PySequence_Check(temp);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	598 Py_XDECREF(temp);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	599 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	600 if (ok) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	601 temp = PySequence_GetItem(tuple, 1);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	602 ok = (temp != NULL) && PyObject_Length(temp) >= 2;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	603 if (ok) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	604 PyObject *temp2 = PySequence_GetItem(temp, 0);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	605 if (temp2 != NULL) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	606 ok = PyInt_Check(temp2);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	607 Py_DECREF(temp2);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	608 }
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	609 }
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	610 Py_XDECREF(temp);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	611 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	612 /* If we've failed at some point, get out of here. */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	613 if (!ok) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	614 err_string("malformed sequence for tuple2ast()");
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	615 return (0);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	616 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	617 /*
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	618 * This might be a valid parse tree, but let's do a quick check
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	619 * before we jump the gun.
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	620 */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	621 if (start_sym == eval_input) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	622 /* Might be an eval form. */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	623 node* expression = build_node_tree(tuple);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	624
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	625 if ((expression != 0) && validate_expr_tree(expression))
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	626 ast = parser_newastobject(expression, PyAST_EXPR);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	627 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	628 else if (start_sym == file_input) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	629 /* This looks like an exec form so far. */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	630 node* suite_tree = build_node_tree(tuple);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	631
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	632 if ((suite_tree != 0) && validate_file_input(suite_tree))
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	633 ast = parser_newastobject(suite_tree, PyAST_SUITE);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	634 }
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	635 else
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	636 /* This is a fragment, and is not yet supported. Maybe they
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	637 * will be if I find a use for them.
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	638 */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	639 err_string("Fragmentary parse trees not supported.");
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	640
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	641 /* Make sure we throw an exception on all errors. We should never
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	642 * get this, but we'd do well to be sure something is done.
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	643 */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	644 if ((ast == 0) && !PyErr_Occurred())
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	645 err_string("Unspecified ast error occurred.");
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	646
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	647 return (ast);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	648
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	649 } /* parser_tuple2ast() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	650
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	651
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	652 /* int check_terminal_tuple()
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	653 *
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	654 * Check a tuple to determine that it is indeed a valid terminal
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	655 * node. The node is known to be required as a terminal, so we throw
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	656 * an exception if there is a failure.
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	657 *
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	658 * The format of an acceptable terminal tuple is "(is[i])": the fact
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	659 * that elem is a tuple and the integer is a valid terminal symbol
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	660 * has been established before this function is called. We must
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	661 * check the length of the tuple and the type of the second element
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	662 * and optional third element. We do NOT check the actual text of
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	663 * the string element, which we could do in many cases. This is done
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	664 * by the validate_*() functions which operate on the internal
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	665 * representation.
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	666 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	667 static int
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	668 check_terminal_tuple(elem)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	669 PyObject *elem;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	670 {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	671 int len = PyObject_Length(elem);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	672 int res = 1;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	673 char* str = "Illegal terminal symbol; bad node length.";
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	674
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	675 if ((len == 2) \|\| (len == 3)) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	676 PyObject *temp = PySequence_GetItem(elem, 1);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	677 res = PyString_Check(temp);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	678 str = "Illegal terminal symbol; expected a string.";
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	679 if (res && (len == 3)) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	680 PyObject* third = PySequence_GetItem(elem, 2);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	681 res = PyInt_Check(third);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	682 str = "Invalid third element of terminal node.";
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	683 Py_XDECREF(third);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	684 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	685 Py_XDECREF(temp);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	686 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	687 else {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	688 res = 0;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	689 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	690 if (!res) {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	691 elem = Py_BuildValue("(os)", elem, str);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	692 PyErr_SetObject(parser_error, elem);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	693 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	694 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	695
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	696 } /* check_terminal_tuple() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	697
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	698
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	699 /* node* build_node_children()
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	700 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	701 * Iterate across the children of the current non-terminal node and build
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	702 * their structures. If successful, return the root of this portion of
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	703 * the tree, otherwise, 0. Any required exception will be specified already,
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	704 * and no memory will have been deallocated.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	705 *
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	706 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	707 static node*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	708 build_node_children(tuple, root, line_num)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	709 PyObject *tuple;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	710 node *root;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	711 int *line_num;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	712 {
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	713 int len = PyObject_Length(tuple);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	714 int i;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	715
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	716 for (i = 1; i < len; ++i) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	717 /* elem must always be a tuple, however simple */
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	718 PyObject* elem = PySequence_GetItem(tuple, i);
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	719 int ok = elem != NULL;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	720 long type = 0;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	721 char *strn = 0;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	722
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	723 if (ok)
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	724 ok = PySequence_Check(elem);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	725 if (ok) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	726 PyObject *temp = PySequence_GetItem(elem, 0);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	727 if (temp == NULL)
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	728 ok = 0;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	729 else {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	730 ok = PyInt_Check(temp);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	731 if (ok)
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	732 type = PyInt_AsLong(temp);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	733 Py_DECREF(temp);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	734 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	735 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	736 if (!ok) {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	737 PyErr_SetObject(parser_error,
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	738 Py_BuildValue("(os)", elem,
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	739 "Illegal node construct."));
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	740 Py_XDECREF(elem);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	741 return (0);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	742 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	743 if (ISTERMINAL(type)) {
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	744 if (check_terminal_tuple(elem)) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	745 PyObject *temp = PySequence_GetItem(elem, 1);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	746
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	747 strn = strdup(PyString_AsString(temp));
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	748 Py_XDECREF(temp);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	749
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	750 if (PyObject_Length(elem) == 3) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	751 PyObject* temp = PySequence_GetItem(elem, 2);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	752 *line_num = PyInt_AsLong(temp);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	753 Py_DECREF(temp);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	754 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	755 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	756 else {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	757 Py_XDECREF(elem);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	758 return (0);
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	759 }
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	760 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	761 else if (!ISNONTERMINAL(type)) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	762 /*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	763 * It has to be one or the other; this is an error.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	764 * Throw an exception.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	765 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	766 PyErr_SetObject(parser_error,
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	767 Py_BuildValue("(os)", elem,
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	768 "Unknown node type."));
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	769 Py_XDECREF(elem);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	770 return (0);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	771 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	772 PyNode_AddChild(root, type, strn, *line_num);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	773
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	774 if (ISNONTERMINAL(type)) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	775 node* new_child = CHILD(root, i - 1);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	776
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	777 if (new_child != build_node_children(elem, new_child, line_num)) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	778 Py_XDECREF(elem);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	779 return (0);
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	780 }
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	781 }
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	782 else if (type == NEWLINE) { /* It's true: we increment the */
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	783 ++(line_num); / line number after the newline! */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	784 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	785 Py_XDECREF(elem);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	786 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	787 return (root);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	788
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	789 } /* build_node_children() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	790
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	791
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	792 static node*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	793 build_node_tree(tuple)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	794 PyObject *tuple;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	795 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	796 node* res = 0;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	797 PyObject *temp = PySequence_GetItem(tuple, 0);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	798 long num = -1;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	799
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	800 if (temp != NULL)
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	801 num = PyInt_AsLong(temp);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	802 Py_XDECREF(temp);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	803 if (ISTERMINAL(num)) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	804 /*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	805 * The tuple is simple, but it doesn't start with a start symbol.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	806 * Throw an exception now and be done with it.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	807 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	808 tuple = Py_BuildValue("(os)", tuple,
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	809 "Illegal ast tuple; cannot start with terminal symbol.");
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	810 PyErr_SetObject(parser_error, tuple);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	811 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	812 else if (ISNONTERMINAL(num)) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	813 /*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	814 * Not efficient, but that can be handled later.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	815 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	816 int line_num = 0;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	817
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	818 res = PyNode_New(num);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	819 if (res != build_node_children(tuple, res, &line_num)) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	820 PyNode_Free(res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	821 res = 0;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	822 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	823 }
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	824 else
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	825 /* The tuple is illegal -- if the number is neither TERMINAL nor
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	826 * NONTERMINAL, we can't use it.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	827 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	828 PyErr_SetObject(parser_error,
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	829 Py_BuildValue("(os)", tuple,
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	830 "Illegal component tuple."));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	831
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	832 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	833
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	834 } /* build_node_tree() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	835
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	836
4092 8592fa4a119b Support for old CPP Guido van Rossum <guido@python.org> parents: 4084 diff changeset	837 #ifdef HAVE_OLD_CPP
4099 3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	838 #define VALIDATER(n) static int validate_/*/n Py_PROTO((node tree))
4092 8592fa4a119b Support for old CPP Guido van Rossum <guido@python.org> parents: 4084 diff changeset	839 #else
4099 3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	840 #define VALIDATER(n) static int validate_##n Py_PROTO((node *tree))
4092 8592fa4a119b Support for old CPP Guido van Rossum <guido@python.org> parents: 4084 diff changeset	841 #endif
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	842
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	843
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	844 /*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	845 * Validation routines used within the validation section:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	846 */
4099 3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	847 staticforward int validate_terminal Py_PROTO((node *terminal,
3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	848 int type, char *string));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	849
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	850 #define validate_ampersand(ch) validate_terminal(ch, AMPER, "&")
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	851 #define validate_circumflex(ch) validate_terminal(ch, CIRCUMFLEX, "^")
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	852 #define validate_colon(ch) validate_terminal(ch, COLON, ":")
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	853 #define validate_comma(ch) validate_terminal(ch, COMMA, ",")
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	854 #define validate_dedent(ch) validate_terminal(ch, DEDENT, "")
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	855 #define validate_equal(ch) validate_terminal(ch, EQUAL, "=")
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	856 #define validate_indent(ch) validate_terminal(ch, INDENT, 0)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	857 #define validate_lparen(ch) validate_terminal(ch, LPAR, "(")
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	858 #define validate_newline(ch) validate_terminal(ch, NEWLINE, 0)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	859 #define validate_rparen(ch) validate_terminal(ch, RPAR, ")")
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	860 #define validate_semi(ch) validate_terminal(ch, SEMI, ";")
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	861 #define validate_star(ch) validate_terminal(ch, STAR, "*")
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	862 #define validate_vbar(ch) validate_terminal(ch, VBAR, "\|")
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	863 #define validate_doublestar(ch) validate_terminal(ch, DOUBLESTAR, "**")
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	864 #define validate_dot(ch) validate_terminal(ch, DOT, ".")
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	865 #define validate_name(ch, str) validate_terminal(ch, NAME, str)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	866
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	867 VALIDATER(node); VALIDATER(small_stmt);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	868 VALIDATER(class); VALIDATER(node);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	869 VALIDATER(parameters); VALIDATER(suite);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	870 VALIDATER(testlist); VALIDATER(varargslist);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	871 VALIDATER(fpdef); VALIDATER(fplist);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	872 VALIDATER(stmt); VALIDATER(simple_stmt);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	873 VALIDATER(expr_stmt); VALIDATER(power);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	874 VALIDATER(print_stmt); VALIDATER(del_stmt);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	875 VALIDATER(return_stmt);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	876 VALIDATER(raise_stmt); VALIDATER(import_stmt);
4099 3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	877 VALIDATER(global_stmt);
5236 b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	878 VALIDATER(assert_stmt);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	879 VALIDATER(exec_stmt); VALIDATER(compound_stmt);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	880 VALIDATER(while); VALIDATER(for);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	881 VALIDATER(try); VALIDATER(except_clause);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	882 VALIDATER(test); VALIDATER(and_test);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	883 VALIDATER(not_test); VALIDATER(comparison);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	884 VALIDATER(comp_op); VALIDATER(expr);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	885 VALIDATER(xor_expr); VALIDATER(and_expr);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	886 VALIDATER(shift_expr); VALIDATER(arith_expr);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	887 VALIDATER(term); VALIDATER(factor);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	888 VALIDATER(atom); VALIDATER(lambdef);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	889 VALIDATER(trailer); VALIDATER(subscript);
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	890 VALIDATER(subscriptlist); VALIDATER(sliceop);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	891 VALIDATER(exprlist); VALIDATER(dictmaker);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	892 VALIDATER(arglist); VALIDATER(argument);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	893
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	894
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	895 #define is_even(n) (((n) & 1) == 0)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	896 #define is_odd(n) (((n) & 1) == 1)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	897
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	898
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	899 static int
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	900 validate_ntype(n, t)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	901 node *n;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	902 int t;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	903 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	904 int res = (TYPE(n) == t);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	905
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	906 if (!res) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	907 char buffer[128];
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	908 sprintf(buffer, "Expected node type %d, got %d.", t, TYPE(n));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	909 err_string(buffer);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	910 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	911 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	912
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	913 } /* validate_ntype() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	914
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	915
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	916 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	917 validate_numnodes(n, num, name)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	918 node *n;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	919 int num;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	920 const char *const name;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	921 {
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	922 if (NCH(n) != num) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	923 char buff[60];
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	924 sprintf(buff, "Illegal number of children for %s node.", name);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	925 err_string(buff);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	926 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	927 return (NCH(n) == num);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	928
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	929 } /* validate_numnodes() */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	930
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	931
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	932 static int
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	933 validate_terminal(terminal, type, string)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	934 node *terminal;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	935 int type;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	936 char *string;
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	937 {
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	938 int res = (validate_ntype(terminal, type)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	939 && ((string == 0) \|\| (strcmp(string, STR(terminal)) == 0)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	940
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	941 if (!res && !PyErr_Occurred()) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	942 char buffer[60];
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	943 sprintf(buffer, "Illegal terminal: expected \"%s\"", string);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	944 err_string(buffer);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	945 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	946 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	947
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	948 } /* validate_terminal() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	949
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	950
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	951 /* X (',' X) [',']
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	952 */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	953 static int
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	954 validate_repeating_list(tree, ntype, vfunc, name)
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	955 node *tree;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	956 int ntype;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	957 int (*vfunc)();
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	958 const char *const name;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	959 {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	960 int nch = NCH(tree);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	961 int res = (nch && validate_ntype(tree, ntype)
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	962 && vfunc(CHILD(tree, 0)));
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	963
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	964 if (!res && !PyErr_Occurred())
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	965 validate_numnodes(tree, 1, name);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	966 else {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	967 if (is_even(nch))
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	968 res = validate_comma(CHILD(tree, --nch));
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	969 if (res && nch > 1) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	970 int pos = 1;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	971 for ( ; res && pos < nch; pos += 2)
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	972 res = (validate_comma(CHILD(tree, pos))
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	973 && vfunc(CHILD(tree, pos + 1)));
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	974 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	975 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	976 return (res);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	977
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	978 } /* validate_repeating_list() */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	979
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	980
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	981 /* VALIDATE(class)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	982 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	983 * classdef:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	984 * 'class' NAME ['(' testlist ')'] ':' suite
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	985 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	986 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	987 validate_class(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	988 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	989 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	990 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	991 int res = validate_ntype(tree, classdef) && ((nch == 4) \|\| (nch == 7));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	992
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	993 if (res) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	994 res = (validate_name(CHILD(tree, 0), "class")
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	995 && validate_ntype(CHILD(tree, 1), NAME)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	996 && validate_colon(CHILD(tree, nch - 2))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	997 && validate_suite(CHILD(tree, nch - 1)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	998 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	999 else
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1000 validate_numnodes(tree, 4, "class");
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1001 if (res && (nch == 7)) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1002 res = (validate_lparen(CHILD(tree, 2))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1003 && validate_testlist(CHILD(tree, 3))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1004 && validate_rparen(CHILD(tree, 4)));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1005 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1006 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1007
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1008 } /* validate_class() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1009
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1010
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1011 /* if_stmt:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1012 * 'if' test ':' suite ('elif' test ':' suite)* ['else' ':' suite]
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1013 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1014 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1015 validate_if(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1016 node *tree;
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1017 {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1018 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1019 int res = (validate_ntype(tree, if_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1020 && (nch >= 4)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1021 && validate_name(CHILD(tree, 0), "if")
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1022 && validate_test(CHILD(tree, 1))
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1023 && validate_colon(CHILD(tree, 2))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1024 && validate_suite(CHILD(tree, 3)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1025
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1026 if (res && ((nch % 4) == 3)) {
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1027 /* ... 'else' ':' suite */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1028 res = (validate_name(CHILD(tree, nch - 3), "else")
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1029 && validate_colon(CHILD(tree, nch - 2))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1030 && validate_suite(CHILD(tree, nch - 1)));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1031 nch -= 3;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1032 }
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1033 else if (!res && !PyErr_Occurred())
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1034 validate_numnodes(tree, 4, "if");
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1035 if ((nch % 4) != 0)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1036 /* Will catch the case for nch < 4 */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1037 res = validate_numnodes(tree, 0, "if");
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1038 else if (res && (nch > 4)) {
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1039 /* ... ('elif' test ':' suite)+ ... */
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1040 int j = 4;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1041 while ((j < nch) && res) {
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1042 res = (validate_name(CHILD(tree, j), "elif")
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1043 && validate_colon(CHILD(tree, j + 2))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1044 && validate_test(CHILD(tree, j + 1))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1045 && validate_suite(CHILD(tree, j + 3)));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1046 j += 4;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1047 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1048 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1049 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1050
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1051 } /* validate_if() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1052
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1053
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1054 /* parameters:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1055 * '(' [varargslist] ')'
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1056 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1057 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1058 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1059 validate_parameters(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1060 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1061 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1062 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1063 int res = validate_ntype(tree, parameters) && ((nch == 2) \|\| (nch == 3));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1064
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1065 if (res) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1066 res = (validate_lparen(CHILD(tree, 0))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1067 && validate_rparen(CHILD(tree, nch - 1)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1068 if (res && (nch == 3))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1069 res = validate_varargslist(CHILD(tree, 1));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1070 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1071 else
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1072 validate_numnodes(tree, 2, "parameters");
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1073
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1074 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1075
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1076 } /* validate_parameters() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1077
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1078
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1079 /* VALIDATE(suite)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1080 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1081 * suite:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1082 * simple_stmt
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1083 * \| NEWLINE INDENT stmt+ DEDENT
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1084 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1085 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1086 validate_suite(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1087 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1088 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1089 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1090 int res = (validate_ntype(tree, suite) && ((nch == 1) \|\| (nch >= 4)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1091
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1092 if (res && (nch == 1))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1093 res = validate_simple_stmt(CHILD(tree, 0));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1094 else if (res) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1095 /* NEWLINE INDENT stmt+ DEDENT */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1096 res = (validate_newline(CHILD(tree, 0))
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1097 && validate_indent(CHILD(tree, 1))
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1098 && validate_stmt(CHILD(tree, 2))
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1099 && validate_dedent(CHILD(tree, nch - 1)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1100
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1101 if (res && (nch > 4)) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1102 int i = 3;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1103 --nch; /* forget the DEDENT */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1104 for ( ; res && (i < nch); ++i)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1105 res = validate_stmt(CHILD(tree, i));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1106 }
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1107 else if (nch < 4)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1108 validate_numnodes(tree, 4, "suite");
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1109 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1110 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1111
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1112 } /* validate_suite() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1113
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1114
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1115 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1116 validate_testlist(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1117 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1118 {
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1119 return (validate_repeating_list(tree, testlist,
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1120 validate_test, "testlist"));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1121
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1122 } /* validate_testlist() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1123
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1124
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1125 /* VALIDATE(varargslist)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1126 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1127 * varargslist:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1128 * (fpdef ['=' test] ',')* ('' NAME [',' '' '' NAME] \| '' '*' NAME)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1129 * \| fpdef ['=' test] (',' fpdef ['=' test])* [',']
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1130 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1131 * (fpdef ['=' test] ',')*
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1132 * ('' NAME [',' (''\|'' '*') NAME]
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1133 * \| ('*'\|'' '*') NAME)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1134 * \| fpdef ['=' test] (',' fpdef ['=' test])* [',']
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1135 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1136 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1137 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1138 validate_varargslist(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1139 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1140 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1141 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1142 int res = validate_ntype(tree, varargslist) && (nch != 0);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1143
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1144 if (res && (nch >= 2) && (TYPE(CHILD(tree, nch - 1)) == NAME)) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1145 /* (fpdef ['=' test] ',')*
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1146 * ('' NAME [',' '' '' NAME] \| '' '*' NAME)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1147 */
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1148 int pos = 0;
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1149 int remaining = nch;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1150
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1151 while (res && (TYPE(CHILD(tree, pos)) == fpdef)) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1152 res = validate_fpdef(CHILD(tree, pos));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1153 if (res) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1154 if (TYPE(CHILD(tree, pos + 1)) == EQUAL) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1155 res = validate_test(CHILD(tree, pos + 2));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1156 pos += 2;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1157 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1158 res = res && validate_comma(CHILD(tree, pos + 1));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1159 pos += 2;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1160 }
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1161 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1162 if (res) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1163 remaining = nch - pos;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1164 res = ((remaining == 2) \|\| (remaining == 3)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1165 \|\| (remaining == 5) \|\| (remaining == 6));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1166 if (!res)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1167 validate_numnodes(tree, 2, "varargslist");
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1168 else if (TYPE(CHILD(tree, pos)) == DOUBLESTAR)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1169 return ((remaining == 2)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1170 && validate_ntype(CHILD(tree, pos+1), NAME));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1171 else {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1172 res = validate_star(CHILD(tree, pos++));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1173 --remaining;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1174 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1175 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1176 if (res) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1177 if (remaining == 2) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1178 res = (validate_star(CHILD(tree, pos))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1179 && validate_ntype(CHILD(tree, pos + 1), NAME));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1180 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1181 else {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1182 res = validate_ntype(CHILD(tree, pos++), NAME);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1183 if (res && (remaining >= 4)) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1184 res = validate_comma(CHILD(tree, pos));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1185 if (--remaining == 3)
4287 f2f5cd7cb5b5 (parsermodule.c): Fixed sloppy typo: '==' -> '=' Fred Drake <fdrake@acm.org> parents: 4099 diff changeset	1186 res = (validate_star(CHILD(tree, pos + 1))
f2f5cd7cb5b5 (parsermodule.c): Fixed sloppy typo: '==' -> '=' Fred Drake <fdrake@acm.org> parents: 4099 diff changeset	1187 && validate_star(CHILD(tree, pos + 2)));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1188 else
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1189 validate_ntype(CHILD(tree, pos + 1), DOUBLESTAR);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1190 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1191 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1192 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1193 if (!res && !PyErr_Occurred())
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1194 err_string("Incorrect validation of variable arguments list.");
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1195 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1196 else if (res) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1197 /* fpdef ['=' test] (',' fpdef ['=' test])* [','] */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1198 if (TYPE(CHILD(tree, nch - 1)) == COMMA)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1199 --nch;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1200
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1201 /* fpdef ['=' test] (',' fpdef ['=' test])* */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1202 res = (is_odd(nch)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1203 && validate_fpdef(CHILD(tree, 0)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1204
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1205 if (res && (nch > 1)) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1206 int pos = 1;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1207 if (TYPE(CHILD(tree, 1)) == EQUAL) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1208 res = validate_test(CHILD(tree, 2));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1209 pos += 2;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1210 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1211 /* ... (',' fpdef ['=' test])* */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1212 for ( ; res && (pos < nch); pos += 2) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1213 /* ',' fpdef */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1214 res = (validate_comma(CHILD(tree, pos))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1215 && validate_fpdef(CHILD(tree, pos + 1)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1216 if (res
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1217 && ((nch - pos) > 2)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1218 && (TYPE(CHILD(tree, pos + 2)) == EQUAL)) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1219 /* ['=' test] */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1220 res = validate_test(CHILD(tree, pos + 3));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1221 pos += 2;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1222 }
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1223 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1224 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1225 }
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1226 else
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1227 err_string("Improperly formed argument list.");
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1228
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1229 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1230
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1231 } /* validate_varargslist() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1232
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1233
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1234 /* VALIDATE(fpdef)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1235 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1236 * fpdef:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1237 * NAME
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1238 * \| '(' fplist ')'
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1239 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1240 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1241 validate_fpdef(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1242 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1243 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1244 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1245 int res = validate_ntype(tree, fpdef);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1246
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1247 if (res) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1248 if (nch == 1)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1249 res = validate_ntype(CHILD(tree, 0), NAME);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1250 else if (nch == 3)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1251 res = (validate_lparen(CHILD(tree, 0))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1252 && validate_fplist(CHILD(tree, 1))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1253 && validate_rparen(CHILD(tree, 2)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1254 else
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1255 validate_numnodes(tree, 1, "fpdef");
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1256 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1257 return (res);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1258
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1259 } /* validate_fpdef() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1260
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1261
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1262 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1263 validate_fplist(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1264 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1265 {
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1266 return (validate_repeating_list(tree, fplist,
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1267 validate_fpdef, "fplist"));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1268
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1269 } /* validate_fplist() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1270
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1271
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1272 /* simple_stmt \| compound_stmt
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1273 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1274 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1275 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1276 validate_stmt(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1277 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1278 {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1279 int res = (validate_ntype(tree, stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1280 && validate_numnodes(tree, 1, "stmt"));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1281
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1282 if (res) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1283 tree = CHILD(tree, 0);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1284
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1285 if (TYPE(tree) == simple_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1286 res = validate_simple_stmt(tree);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1287 else
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1288 res = validate_compound_stmt(tree);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1289 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1290 return (res);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1291
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1292 } /* validate_stmt() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1293
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1294
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1295 /* small_stmt (';' small_stmt)* [';'] NEWLINE
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1296 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1297 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1298 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1299 validate_simple_stmt(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1300 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1301 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1302 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1303 int res = (validate_ntype(tree, simple_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1304 && (nch >= 2)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1305 && validate_small_stmt(CHILD(tree, 0))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1306 && validate_newline(CHILD(tree, nch - 1)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1307
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1308 if (nch < 2)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1309 res = validate_numnodes(tree, 2, "simple_stmt");
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1310 --nch; /* forget the NEWLINE */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1311 if (res && is_even(nch))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1312 res = validate_semi(CHILD(tree, --nch));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1313 if (res && (nch > 2)) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1314 int i;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1315
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1316 for (i = 1; res && (i < nch); i += 2)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1317 res = (validate_semi(CHILD(tree, i))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1318 && validate_small_stmt(CHILD(tree, i + 1)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1319 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1320 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1321
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1322 } /* validate_simple_stmt() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1323
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1324
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1325 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1326 validate_small_stmt(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1327 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1328 {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1329 int nch = NCH(tree);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1330 int res = (validate_numnodes(tree, 1, "small_stmt")
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1331 && ((TYPE(CHILD(tree, 0)) == expr_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1332 \|\| (TYPE(CHILD(tree, 0)) == print_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1333 \|\| (TYPE(CHILD(tree, 0)) == del_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1334 \|\| (TYPE(CHILD(tree, 0)) == pass_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1335 \|\| (TYPE(CHILD(tree, 0)) == flow_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1336 \|\| (TYPE(CHILD(tree, 0)) == import_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1337 \|\| (TYPE(CHILD(tree, 0)) == global_stmt)
5236 b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1338 \|\| (TYPE(CHILD(tree, 0)) == assert_stmt)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1339 \|\| (TYPE(CHILD(tree, 0)) == exec_stmt)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1340
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1341 if (res)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1342 res = validate_node(CHILD(tree, 0));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1343 else if (nch == 1) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1344 char buffer[60];
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1345 sprintf(buffer, "Unrecognized child node of small_stmt: %d.",
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1346 TYPE(CHILD(tree, 0)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1347 err_string(buffer);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1348 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1349 return (res);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1350
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1351 } /* validate_small_stmt */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1352
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1353
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1354 /* compound_stmt:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1355 * if_stmt \| while_stmt \| for_stmt \| try_stmt \| funcdef \| classdef
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1356 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1357 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1358 validate_compound_stmt(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1359 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1360 {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1361 int res = (validate_ntype(tree, compound_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1362 && validate_numnodes(tree, 1, "compound_stmt"));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1363
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1364 if (!res)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1365 return (0);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1366
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1367 tree = CHILD(tree, 0);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1368 res = ((TYPE(tree) == if_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1369 \|\| (TYPE(tree) == while_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1370 \|\| (TYPE(tree) == for_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1371 \|\| (TYPE(tree) == try_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1372 \|\| (TYPE(tree) == funcdef)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1373 \|\| (TYPE(tree) == classdef));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1374 if (res)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1375 res = validate_node(tree);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1376 else {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1377 char buffer[60];
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1378 sprintf(buffer, "Illegal compound statement type: %d.", TYPE(tree));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1379 err_string(buffer);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1380 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1381 return (res);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1382
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1383 } /* validate_compound_stmt() */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1384
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1385
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1386 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1387 validate_expr_stmt(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1388 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1389 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1390 int j;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1391 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1392 int res = (validate_ntype(tree, expr_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1393 && is_odd(nch)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1394 && validate_testlist(CHILD(tree, 0)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1395
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1396 for (j = 1; res && (j < nch); j += 2)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1397 res = (validate_equal(CHILD(tree, j))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1398 && validate_testlist(CHILD(tree, j + 1)));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1399
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1400 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1401
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1402 } /* validate_expr_stmt() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1403
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1404
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1405 /* print_stmt:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1406 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1407 * 'print' (test ',')* [test]
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1408 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1409 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1410 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1411 validate_print_stmt(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1412 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1413 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1414 int j;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1415 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1416 int res = (validate_ntype(tree, print_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1417 && (nch != 0)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1418 && validate_name(CHILD(tree, 0), "print"));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1419
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1420 if (res && is_even(nch)) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1421 res = validate_test(CHILD(tree, nch - 1));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1422 --nch;
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1423 }
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1424 else if (!res && !PyErr_Occurred())
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1425 validate_numnodes(tree, 1, "print_stmt");
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1426 for (j = 1; res && (j < nch); j += 2)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1427 res = (validate_test(CHILD(tree, j))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1428 && validate_ntype(CHILD(tree, j + 1), COMMA));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1429
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1430 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1431
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1432 } /* validate_print_stmt() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1433
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1434
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1435 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1436 validate_del_stmt(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1437 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1438 {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1439 return (validate_numnodes(tree, 2, "del_stmt")
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1440 && validate_name(CHILD(tree, 0), "del")
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1441 && validate_exprlist(CHILD(tree, 1)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1442
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1443 } /* validate_del_stmt() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1444
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1445
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1446 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1447 validate_return_stmt(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1448 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1449 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1450 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1451 int res = (validate_ntype(tree, return_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1452 && ((nch == 1) \|\| (nch == 2))
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1453 && validate_name(CHILD(tree, 0), "return"));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1454
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1455 if (res && (nch == 2))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1456 res = validate_testlist(CHILD(tree, 1));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1457
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1458 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1459
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1460 } /* validate_return_stmt() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1461
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1462
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1463 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1464 validate_raise_stmt(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1465 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1466 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1467 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1468 int res = (validate_ntype(tree, raise_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1469 && ((nch == 2) \|\| (nch == 4) \|\| (nch == 6)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1470
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1471 if (res) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1472 res = (validate_name(CHILD(tree, 0), "raise")
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1473 && validate_test(CHILD(tree, 1)));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1474 if (res && nch > 2) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1475 res = (validate_comma(CHILD(tree, 2))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1476 && validate_test(CHILD(tree, 3)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1477 if (res && (nch > 4))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1478 res = (validate_comma(CHILD(tree, 4))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1479 && validate_test(CHILD(tree, 5)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1480 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1481 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1482 else
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1483 validate_numnodes(tree, 2, "raise");
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1484 if (res && (nch == 4))
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1485 res = (validate_comma(CHILD(tree, 2))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1486 && validate_test(CHILD(tree, 3)));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1487
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1488 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1489
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1490 } /* validate_raise_stmt() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1491
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1492
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1493 /* import_stmt:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1494 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1495 * 'import' dotted_name (',' dotted_name)*
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1496 * \| 'from' dotted_name 'import' ('' \| NAME (',' NAME))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1497 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1498 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1499 validate_import_stmt(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1500 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1501 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1502 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1503 int res = (validate_ntype(tree, import_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1504 && (nch >= 2) && is_even(nch)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1505 && validate_ntype(CHILD(tree, 0), NAME)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1506 && validate_ntype(CHILD(tree, 1), dotted_name));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1507
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1508 if (res && (strcmp(STR(CHILD(tree, 0)), "import") == 0)) {
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1509 int j;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1510
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1511 for (j = 2; res && (j < nch); j += 2)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1512 res = (validate_comma(CHILD(tree, j))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1513 && validate_ntype(CHILD(tree, j + 1), dotted_name));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1514 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1515 else if (res && validate_name(CHILD(tree, 0), "from")) {
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1516 res = ((nch >= 4) && is_even(nch)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1517 && validate_name(CHILD(tree, 2), "import"));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1518 if (nch == 4) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1519 res = ((TYPE(CHILD(tree, 3)) == NAME)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1520 \|\| (TYPE(CHILD(tree, 3)) == STAR));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1521 if (!res)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1522 err_string("Illegal import statement.");
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1523 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1524 else {
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1525 /* 'from' NAME 'import' NAME (',' NAME)+ */
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1526 int j;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1527 res = validate_ntype(CHILD(tree, 3), NAME);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1528 for (j = 4; res && (j < nch); j += 2)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1529 res = (validate_comma(CHILD(tree, j))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1530 && validate_ntype(CHILD(tree, j + 1), NAME));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1531 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1532 }
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1533 else
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1534 res = 0;
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1535
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1536 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1537
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1538 } /* validate_import_stmt() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1539
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1540
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1541 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1542 validate_global_stmt(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1543 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1544 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1545 int j;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1546 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1547 int res = (validate_ntype(tree, global_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1548 && is_even(nch) && (nch >= 2));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1549
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1550 if (res)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1551 res = (validate_name(CHILD(tree, 0), "global")
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1552 && validate_ntype(CHILD(tree, 1), NAME));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1553 for (j = 2; res && (j < nch); j += 2)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1554 res = (validate_comma(CHILD(tree, j))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1555 && validate_ntype(CHILD(tree, j + 1), NAME));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1556
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1557 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1558
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1559 } /* validate_global_stmt() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1560
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1561
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1562 /* exec_stmt:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1563 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1564 * 'exec' expr ['in' test [',' test]]
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1565 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1566 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1567 validate_exec_stmt(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1568 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1569 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1570 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1571 int res = (validate_ntype(tree, exec_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1572 && ((nch == 2) \|\| (nch == 4) \|\| (nch == 6))
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1573 && validate_name(CHILD(tree, 0), "exec")
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1574 && validate_expr(CHILD(tree, 1)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1575
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1576 if (!res && !PyErr_Occurred())
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1577 err_string("Illegal exec statement.");
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1578 if (res && (nch > 2))
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1579 res = (validate_name(CHILD(tree, 2), "in")
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1580 && validate_test(CHILD(tree, 3)));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1581 if (res && (nch == 6))
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1582 res = (validate_comma(CHILD(tree, 4))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1583 && validate_test(CHILD(tree, 5)));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1584
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1585 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1586
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1587 } /* validate_exec_stmt() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1588
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1589
5236 b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1590 /* assert_stmt:
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1591 *
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1592 * 'assert' test [',' test]
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1593 */
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1594 static int
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1595 validate_assert_stmt(tree)
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1596 node *tree;
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1597 {
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1598 int nch = NCH(tree);
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1599 int res = (validate_ntype(tree, assert_stmt)
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1600 && ((nch == 2) \|\| (nch == 4))
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1601 && (validate_name(CHILD(tree, 0), "__assert__") \|\|
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1602 validate_name(CHILD(tree, 0), "assert"))
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1603 && validate_test(CHILD(tree, 1)));
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1604
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1605 if (!res && !PyErr_Occurred())
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1606 err_string("Illegal assert statement.");
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1607 if (res && (nch > 2))
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1608 res = (validate_comma(CHILD(tree, 2))
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1609 && validate_test(CHILD(tree, 3)));
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1610
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1611 return (res);
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1612
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1613 } /* validate_assert_stmt() */
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1614
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	1615
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1616 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1617 validate_while(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1618 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1619 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1620 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1621 int res = (validate_ntype(tree, while_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1622 && ((nch == 4) \|\| (nch == 7))
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1623 && validate_name(CHILD(tree, 0), "while")
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1624 && validate_test(CHILD(tree, 1))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1625 && validate_colon(CHILD(tree, 2))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1626 && validate_suite(CHILD(tree, 3)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1627
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1628 if (res && (nch == 7))
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1629 res = (validate_name(CHILD(tree, 4), "else")
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1630 && validate_colon(CHILD(tree, 5))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1631 && validate_suite(CHILD(tree, 6)));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1632
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1633 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1634
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1635 } /* validate_while() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1636
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1637
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1638 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1639 validate_for(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1640 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1641 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1642 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1643 int res = (validate_ntype(tree, for_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1644 && ((nch == 6) \|\| (nch == 9))
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1645 && validate_name(CHILD(tree, 0), "for")
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1646 && validate_exprlist(CHILD(tree, 1))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1647 && validate_name(CHILD(tree, 2), "in")
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1648 && validate_testlist(CHILD(tree, 3))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1649 && validate_colon(CHILD(tree, 4))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1650 && validate_suite(CHILD(tree, 5)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1651
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1652 if (res && (nch == 9))
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1653 res = (validate_name(CHILD(tree, 6), "else")
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1654 && validate_colon(CHILD(tree, 7))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1655 && validate_suite(CHILD(tree, 8)));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1656
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1657 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1658
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1659 } /* validate_for() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1660
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1661
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1662 /* try_stmt:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1663 * 'try' ':' suite (except_clause ':' suite)+ ['else' ':' suite]
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1664 * \| 'try' ':' suite 'finally' ':' suite
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1665 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1666 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1667 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1668 validate_try(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1669 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1670 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1671 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1672 int pos = 3;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1673 int res = (validate_ntype(tree, try_stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1674 && (nch >= 6) && ((nch % 3) == 0));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1675
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1676 if (res)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1677 res = (validate_name(CHILD(tree, 0), "try")
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1678 && validate_colon(CHILD(tree, 1))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1679 && validate_suite(CHILD(tree, 2))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1680 && validate_colon(CHILD(tree, nch - 2))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1681 && validate_suite(CHILD(tree, nch - 1)));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1682 else {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1683 const char* name = "execpt";
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1684 char buffer[60];
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1685 if (TYPE(CHILD(tree, nch - 3)) != except_clause)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1686 name = STR(CHILD(tree, nch - 3));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1687 sprintf(buffer, "Illegal number of children for try/%s node.", name);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1688 err_string(buffer);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1689 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1690 /* Skip past except_clause sections: */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1691 while (res && (TYPE(CHILD(tree, pos)) == except_clause)) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1692 res = (validate_except_clause(CHILD(tree, pos))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1693 && validate_colon(CHILD(tree, pos + 1))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1694 && validate_suite(CHILD(tree, pos + 2)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1695 pos += 3;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1696 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1697 if (res && (pos < nch)) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1698 res = validate_ntype(CHILD(tree, pos), NAME);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1699 if (res && (strcmp(STR(CHILD(tree, pos)), "finally") == 0))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1700 res = (validate_numnodes(tree, 6, "try/finally")
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1701 && validate_colon(CHILD(tree, 4))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1702 && validate_suite(CHILD(tree, 5)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1703 else if (res)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1704 if (nch == (pos + 3)) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1705 res = ((strcmp(STR(CHILD(tree, pos)), "except") == 0)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1706 \|\| (strcmp(STR(CHILD(tree, pos)), "else") == 0));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1707 if (!res)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1708 err_string("Illegal trailing triple in try statement.");
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1709 }
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1710 else if (nch == (pos + 6))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1711 res = (validate_name(CHILD(tree, pos), "except")
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1712 && validate_colon(CHILD(tree, pos + 1))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1713 && validate_suite(CHILD(tree, pos + 2))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1714 && validate_name(CHILD(tree, pos + 3), "else"));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1715 else
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1716 res = validate_numnodes(tree, pos + 3, "try/except");
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1717 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1718 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1719
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1720 } /* validate_try() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1721
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1722
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1723 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1724 validate_except_clause(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1725 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1726 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1727 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1728 int res = (validate_ntype(tree, except_clause)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1729 && ((nch == 1) \|\| (nch == 2) \|\| (nch == 4))
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1730 && validate_name(CHILD(tree, 0), "except"));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1731
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1732 if (res && (nch > 1))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1733 res = validate_test(CHILD(tree, 1));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1734 if (res && (nch == 4))
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1735 res = (validate_comma(CHILD(tree, 2))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1736 && validate_test(CHILD(tree, 3)));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1737
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1738 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1739
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1740 } /* validate_except_clause() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1741
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1742
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1743 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1744 validate_test(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1745 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1746 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1747 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1748 int res = validate_ntype(tree, test) && is_odd(nch);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1749
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1750 if (res && (TYPE(CHILD(tree, 0)) == lambdef))
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1751 res = ((nch == 1)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1752 && validate_lambdef(CHILD(tree, 0)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1753 else if (res) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1754 int pos;
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1755 res = validate_and_test(CHILD(tree, 0));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1756 for (pos = 1; res && (pos < nch); pos += 2)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1757 res = (validate_name(CHILD(tree, pos), "or")
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1758 && validate_and_test(CHILD(tree, pos + 1)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1759 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1760 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1761
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1762 } /* validate_test() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1763
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1764
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1765 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1766 validate_and_test(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1767 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1768 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1769 int pos;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1770 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1771 int res = (validate_ntype(tree, and_test)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1772 && is_odd(nch)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1773 && validate_not_test(CHILD(tree, 0)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1774
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1775 for (pos = 1; res && (pos < nch); pos += 2)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1776 res = (validate_name(CHILD(tree, pos), "and")
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1777 && validate_not_test(CHILD(tree, 0)));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1778
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1779 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1780
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1781 } /* validate_and_test() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1782
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1783
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1784 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1785 validate_not_test(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1786 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1787 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1788 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1789 int res = validate_ntype(tree, not_test) && ((nch == 1) \|\| (nch == 2));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1790
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1791 if (res) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1792 if (nch == 2)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1793 res = (validate_name(CHILD(tree, 0), "not")
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1794 && validate_not_test(CHILD(tree, 1)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1795 else if (nch == 1)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1796 res = validate_comparison(CHILD(tree, 0));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1797 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1798 return (res);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1799
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1800 } /* validate_not_test() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1801
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1802
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1803 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1804 validate_comparison(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1805 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1806 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1807 int pos;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1808 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1809 int res = (validate_ntype(tree, comparison)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1810 && is_odd(nch)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1811 && validate_expr(CHILD(tree, 0)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1812
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1813 for (pos = 1; res && (pos < nch); pos += 2)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1814 res = (validate_comp_op(CHILD(tree, pos))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1815 && validate_expr(CHILD(tree, pos + 1)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1816
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1817 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1818
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1819 } /* validate_comparison() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1820
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1821
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1822 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1823 validate_comp_op(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1824 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1825 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1826 int res = 0;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1827 int nch = NCH(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1828
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1829 if (!validate_ntype(tree, comp_op))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1830 return (0);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1831 if (nch == 1) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1832 /*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1833 * Only child will be a terminal with a well-defined symbolic name
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1834 * or a NAME with a string of either 'is' or 'in'
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1835 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1836 tree = CHILD(tree, 0);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1837 switch (TYPE(tree)) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1838 case LESS:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1839 case GREATER:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1840 case EQEQUAL:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1841 case EQUAL:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1842 case LESSEQUAL:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1843 case GREATEREQUAL:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1844 case NOTEQUAL:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1845 res = 1;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1846 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1847 case NAME:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1848 res = ((strcmp(STR(tree), "in") == 0)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1849 \|\| (strcmp(STR(tree), "is") == 0));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1850 if (!res) {
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1851 char buff[128];
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1852 sprintf(buff, "Illegal operator: '%s'.", STR(tree));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1853 err_string(buff);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1854 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1855 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1856 default:
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1857 err_string("Illegal comparison operator type.");
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1858 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1859 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1860 }
4600 d36250aefb82 Keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	1861 else if ((res = validate_numnodes(tree, 2, "comp_op")) != 0) {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1862 res = (validate_ntype(CHILD(tree, 0), NAME)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1863 && validate_ntype(CHILD(tree, 1), NAME)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1864 && (((strcmp(STR(CHILD(tree, 0)), "is") == 0)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1865 && (strcmp(STR(CHILD(tree, 1)), "not") == 0))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1866 \|\| ((strcmp(STR(CHILD(tree, 0)), "not") == 0)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1867 && (strcmp(STR(CHILD(tree, 1)), "in") == 0))));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1868 if (!res && !PyErr_Occurred())
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1869 err_string("Unknown comparison operator.");
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1870 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1871 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1872
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1873 } /* validate_comp_op() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1874
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1875
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1876 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1877 validate_expr(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1878 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1879 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1880 int j;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1881 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1882 int res = (validate_ntype(tree, expr)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1883 && is_odd(nch)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1884 && validate_xor_expr(CHILD(tree, 0)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1885
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1886 for (j = 2; res && (j < nch); j += 2)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1887 res = (validate_xor_expr(CHILD(tree, j))
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1888 && validate_vbar(CHILD(tree, j - 1)));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1889
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1890 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1891
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1892 } /* validate_expr() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1893
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1894
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1895 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1896 validate_xor_expr(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1897 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1898 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1899 int j;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1900 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1901 int res = (validate_ntype(tree, xor_expr)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1902 && is_odd(nch)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1903 && validate_and_expr(CHILD(tree, 0)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1904
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1905 for (j = 2; res && (j < nch); j += 2)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1906 res = (validate_circumflex(CHILD(tree, j - 1))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1907 && validate_and_expr(CHILD(tree, j)));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1908
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1909 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1910
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1911 } /* validate_xor_expr() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1912
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1913
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1914 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1915 validate_and_expr(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1916 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1917 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1918 int pos;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1919 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1920 int res = (validate_ntype(tree, and_expr)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1921 && is_odd(nch)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1922 && validate_shift_expr(CHILD(tree, 0)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1923
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1924 for (pos = 1; res && (pos < nch); pos += 2)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1925 res = (validate_ampersand(CHILD(tree, pos))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1926 && validate_shift_expr(CHILD(tree, pos + 1)));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1927
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1928 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1929
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1930 } /* validate_and_expr() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1931
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1932
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1933 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1934 validate_chain_two_ops(tree, termvalid, op1, op2)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1935 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1936 int (*termvalid)();
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1937 int op1;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1938 int op2;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1939 {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1940 int pos = 1;
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1941 int nch = NCH(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1942 int res = (is_odd(nch)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1943 && (*termvalid)(CHILD(tree, 0)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1944
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1945 for ( ; res && (pos < nch); pos += 2) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1946 if (TYPE(CHILD(tree, pos)) != op1)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1947 res = validate_ntype(CHILD(tree, pos), op2);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1948 if (res)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1949 res = (*termvalid)(CHILD(tree, pos + 1));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1950 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1951 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1952
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1953 } /* validate_chain_two_ops() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1954
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1955
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1956 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1957 validate_shift_expr(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1958 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1959 {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1960 return (validate_ntype(tree, shift_expr)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1961 && validate_chain_two_ops(tree, validate_arith_expr,
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1962 LEFTSHIFT, RIGHTSHIFT));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1963
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1964 } /* validate_shift_expr() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1965
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1966
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1967 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1968 validate_arith_expr(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1969 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1970 {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1971 return (validate_ntype(tree, arith_expr)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1972 && validate_chain_two_ops(tree, validate_term, PLUS, MINUS));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1973
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1974 } /* validate_arith_expr() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1975
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1976
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	1977 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1978 validate_term(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1979 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1980 {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1981 int pos = 1;
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1982 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1983 int res = (validate_ntype(tree, term)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1984 && is_odd(nch)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1985 && validate_factor(CHILD(tree, 0)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1986
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1987 for ( ; res && (pos < nch); pos += 2)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1988 res = (((TYPE(CHILD(tree, pos)) == STAR)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1989 \|\| (TYPE(CHILD(tree, pos)) == SLASH)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1990 \|\| (TYPE(CHILD(tree, pos)) == PERCENT))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1991 && validate_factor(CHILD(tree, pos + 1)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1992
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1993 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1994
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1995 } /* validate_term() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1996
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	1997
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1998 /* factor:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	1999 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2000 * factor: ('+'\|'-'\|'~') factor \| power
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2001 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2002 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2003 validate_factor(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2004 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2005 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2006 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2007 int res = (validate_ntype(tree, factor)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2008 && (((nch == 2)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2009 && ((TYPE(CHILD(tree, 0)) == PLUS)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2010 \|\| (TYPE(CHILD(tree, 0)) == MINUS)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2011 \|\| (TYPE(CHILD(tree, 0)) == TILDE))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2012 && validate_factor(CHILD(tree, 1)))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2013 \|\| ((nch == 1)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2014 && validate_power(CHILD(tree, 0)))));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2015 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2016
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2017 } /* validate_factor() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2018
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2019
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2020 /* power:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2021 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2022 * power: atom trailer* ('*' factor)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2023 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2024 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2025 validate_power(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2026 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2027 {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2028 int pos = 1;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2029 int nch = NCH(tree);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2030 int res = (validate_ntype(tree, power) && (nch >= 1)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2031 && validate_atom(CHILD(tree, 0)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2032
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2033 while (res && (pos < nch) && (TYPE(CHILD(tree, pos)) == trailer))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2034 res = validate_trailer(CHILD(tree, pos++));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2035 if (res && (pos < nch)) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2036 if (!is_even(nch - pos)) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2037 err_string("Illegal number of nodes for 'power'.");
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2038 return (0);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2039 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2040 for ( ; res && (pos < (nch - 1)); pos += 2)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2041 res = (validate_doublestar(CHILD(tree, pos))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2042 && validate_factor(CHILD(tree, pos + 1)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2043 }
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2044 return (res);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2045
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2046 } /* validate_power() */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2047
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2048
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2049 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2050 validate_atom(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2051 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2052 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2053 int pos;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2054 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2055 int res = validate_ntype(tree, atom) && (nch >= 1);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2056
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2057 if (res) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2058 switch (TYPE(CHILD(tree, 0))) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2059 case LPAR:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2060 res = ((nch <= 3)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2061 && (validate_rparen(CHILD(tree, nch - 1))));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2062
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2063 if (res && (nch == 3))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2064 res = validate_testlist(CHILD(tree, 1));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2065 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2066 case LSQB:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2067 res = ((nch <= 3)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2068 && validate_ntype(CHILD(tree, nch - 1), RSQB));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2069
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2070 if (res && (nch == 3))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2071 res = validate_testlist(CHILD(tree, 1));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2072 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2073 case LBRACE:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2074 res = ((nch <= 3)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2075 && validate_ntype(CHILD(tree, nch - 1), RBRACE));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2076
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2077 if (res && (nch == 3))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2078 res = validate_dictmaker(CHILD(tree, 1));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2079 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2080 case BACKQUOTE:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2081 res = ((nch == 3)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2082 && validate_testlist(CHILD(tree, 1))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2083 && validate_ntype(CHILD(tree, 2), BACKQUOTE));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2084 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2085 case NAME:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2086 case NUMBER:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2087 res = (nch == 1);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2088 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2089 case STRING:
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2090 for (pos = 1; res && (pos < nch); ++pos)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2091 res = validate_ntype(CHILD(tree, pos), STRING);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2092 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2093 default:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2094 res = 0;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2095 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2096 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2097 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2098 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2099
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2100 } /* validate_atom() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2101
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2102
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2103 /* funcdef:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2104 * 'def' NAME parameters ':' suite
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2105 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2106 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2107 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2108 validate_funcdef(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2109 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2110 {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2111 return (validate_ntype(tree, funcdef)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2112 && validate_numnodes(tree, 5, "funcdef")
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2113 && validate_name(CHILD(tree, 0), "def")
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2114 && validate_ntype(CHILD(tree, 1), NAME)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2115 && validate_colon(CHILD(tree, 3))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2116 && validate_parameters(CHILD(tree, 2))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2117 && validate_suite(CHILD(tree, 4)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2118
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2119 } /* validate_funcdef() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2120
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2121
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2122 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2123 validate_lambdef(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2124 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2125 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2126 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2127 int res = (validate_ntype(tree, lambdef)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2128 && ((nch == 3) \|\| (nch == 4))
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2129 && validate_name(CHILD(tree, 0), "lambda")
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2130 && validate_colon(CHILD(tree, nch - 2))
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2131 && validate_test(CHILD(tree, nch - 1)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2132
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2133 if (res && (nch == 4))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2134 res = validate_varargslist(CHILD(tree, 1));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2135 else if (!res && !PyErr_Occurred())
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2136 validate_numnodes(tree, 3, "lambdef");
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2137
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2138 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2139
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2140 } /* validate_lambdef() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2141
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2142
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2143 /* arglist:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2144 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2145 * argument (',' argument)* [',']
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2146 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2147 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2148 validate_arglist(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2149 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2150 {
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2151 return (validate_repeating_list(tree, arglist,
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2152 validate_argument, "arglist"));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2153
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2154 } /* validate_arglist() */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2155
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2156
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2157
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2158 /* argument:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2159 *
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2160 * [test '='] test
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2161 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2162 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2163 validate_argument(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2164 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2165 {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2166 int nch = NCH(tree);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2167 int res = (validate_ntype(tree, argument)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2168 && ((nch == 1) \|\| (nch == 3))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2169 && validate_test(CHILD(tree, 0)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2170
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2171 if (res && (nch == 3))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2172 res = (validate_equal(CHILD(tree, 1))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2173 && validate_test(CHILD(tree, 2)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2174
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2175 return (res);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2176
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2177 } /* validate_argument() */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2178
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2179
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2180
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2181 /* trailer:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2182 *
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2183 * '(' [arglist] ')' \| '[' subscriptlist ']' \| '.' NAME
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2184 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2185 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2186 validate_trailer(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2187 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2188 {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2189 int nch = NCH(tree);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2190 int res = validate_ntype(tree, trailer) && ((nch == 2) \|\| (nch == 3));
1406 474823e5f7dc * parsermodule.c, Makefile, config.c: rudimentary interface to the Python Guido van Rossum <guido@python.org> parents: diff changeset	2191
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2192 if (res) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2193 switch (TYPE(CHILD(tree, 0))) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2194 case LPAR:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2195 res = validate_rparen(CHILD(tree, nch - 1));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2196 if (res && (nch == 3))
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2197 res = validate_arglist(CHILD(tree, 1));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2198 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2199 case LSQB:
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2200 res = (validate_numnodes(tree, 3, "trailer")
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2201 && validate_subscriptlist(CHILD(tree, 1))
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2202 && validate_ntype(CHILD(tree, 2), RSQB));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2203 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2204 case DOT:
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2205 res = (validate_numnodes(tree, 2, "trailer")
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2206 && validate_ntype(CHILD(tree, 1), NAME));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2207 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2208 default:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2209 res = 0;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2210 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2211 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2212 }
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2213 else
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2214 validate_numnodes(tree, 2, "trailer");
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2215
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2216 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2217
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2218 } /* validate_trailer() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2219
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2220
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2221 /* subscriptlist:
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2222 *
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2223 * subscript (',' subscript)* [',']
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2224 */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2225 static int
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2226 validate_subscriptlist(tree)
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2227 node *tree;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2228 {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2229 return (validate_repeating_list(tree, subscriptlist,
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2230 validate_subscript, "subscriptlist"));
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2231
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2232 } /* validate_subscriptlist() */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2233
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2234
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2235 /* subscript:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2236 *
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2237 * '.' '.' '.' \| test \| [test] ':' [test] [sliceop]
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2238 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2239 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2240 validate_subscript(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2241 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2242 {
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2243 int offset = 0;
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2244 int nch = NCH(tree);
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2245 int res = validate_ntype(tree, subscript) && (nch >= 1) && (nch <= 4);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2246
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2247 if (!res) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2248 if (!PyErr_Occurred())
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2249 err_string("invalid number of arguments for subscript node");
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2250 return (0);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2251 }
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2252 if (TYPE(CHILD(tree, 0)) == DOT)
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2253 /* take care of ('.' '.' '.') possibility */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2254 return (validate_numnodes(tree, 3, "subscript")
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2255 && validate_dot(CHILD(tree, 0))
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2256 && validate_dot(CHILD(tree, 1))
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2257 && validate_dot(CHILD(tree, 2)));
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2258 if (nch == 1) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2259 if (TYPE(CHILD(tree, 0)) == test)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2260 res = validate_test(CHILD(tree, 0));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2261 else
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2262 res = validate_colon(CHILD(tree, 0));
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2263 return (res);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2264 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2265 /* Must be [test] ':' [test] [sliceop],
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2266 * but at least one of the optional components will
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2267 * be present, but we don't know which yet.
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2268 */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2269 if ((TYPE(CHILD(tree, 0)) != COLON) \|\| (nch == 4)) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2270 res = validate_test(CHILD(tree, 0));
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2271 offset = 1;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2272 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2273 if (res)
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2274 res = validate_colon(CHILD(tree, offset));
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2275 if (res) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2276 int rem = nch - ++offset;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2277 if (rem) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2278 if (TYPE(CHILD(tree, offset)) == test) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2279 res = validate_test(CHILD(tree, offset));
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2280 ++offset;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2281 --rem;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2282 }
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2283 if (res && rem)
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2284 res = validate_sliceop(CHILD(tree, offset));
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2285 }
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2286 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2287 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2288
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2289 } /* validate_subscript() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2290
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2291
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2292 static int
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2293 validate_sliceop(tree)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2294 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2295 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2296 int nch = NCH(tree);
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2297 int res = ((nch == 1) \|\| validate_numnodes(tree, 2, "sliceop"))
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2298 && validate_ntype(tree, sliceop);
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2299 if (!res && !PyErr_Occurred()) {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2300 validate_numnodes(tree, 1, "sliceop");
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2301 res = 0;
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2302 }
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2303 if (res)
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2304 res = validate_colon(CHILD(tree, 0));
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2305 if (res && (nch == 2))
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2306 res = validate_test(CHILD(tree, 1));
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2307
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2308 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2309
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2310 } /* validate_sliceop() */
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2311
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2312
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2313 static int
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2314 validate_exprlist(tree)
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2315 node *tree;
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2316 {
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2317 return (validate_repeating_list(tree, exprlist,
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2318 validate_expr, "exprlist"));
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2319
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2320 } /* validate_exprlist() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2321
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2322
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2323 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2324 validate_dictmaker(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2325 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2326 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2327 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2328 int res = (validate_ntype(tree, dictmaker)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2329 && (nch >= 3)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2330 && validate_test(CHILD(tree, 0))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2331 && validate_colon(CHILD(tree, 1))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2332 && validate_test(CHILD(tree, 2)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2333
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2334 if (res && ((nch % 4) == 0))
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2335 res = validate_comma(CHILD(tree, --nch));
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2336 else if (res)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2337 res = ((nch % 4) == 3);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2338
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2339 if (res && (nch > 3)) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2340 int pos = 3;
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2341 /* ( ',' test ':' test )* */
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2342 while (res && (pos < nch)) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2343 res = (validate_comma(CHILD(tree, pos))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2344 && validate_test(CHILD(tree, pos + 1))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2345 && validate_colon(CHILD(tree, pos + 2))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2346 && validate_test(CHILD(tree, pos + 3)));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2347 pos += 4;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2348 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2349 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2350 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2351
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2352 } /* validate_dictmaker() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2353
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2354
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2355 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2356 validate_eval_input(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2357 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2358 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2359 int pos;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2360 int nch = NCH(tree);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2361 int res = (validate_ntype(tree, eval_input)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2362 && (nch >= 2)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2363 && validate_testlist(CHILD(tree, 0))
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2364 && validate_ntype(CHILD(tree, nch - 1), ENDMARKER));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2365
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2366 for (pos = 1; res && (pos < (nch - 1)); ++pos)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2367 res = validate_ntype(CHILD(tree, pos), NEWLINE);
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2368
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2369 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2370
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2371 } /* validate_eval_input() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2372
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2373
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2374 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2375 validate_node(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2376 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2377 {
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2378 int nch = 0; /* num. children on current node */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2379 int res = 1; /* result value */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2380 node* next = 0; /* node to process after this one */
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2381
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2382 while (res & (tree != 0)) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2383 nch = NCH(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2384 next = 0;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2385 switch (TYPE(tree)) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2386 /*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2387 * Definition nodes.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2388 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2389 case funcdef:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2390 res = validate_funcdef(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2391 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2392 case classdef:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2393 res = validate_class(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2394 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2395 /*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2396 * "Trivial" parse tree nodes.
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2397 * (Why did I call these trivial?)
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2398 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2399 case stmt:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2400 res = validate_stmt(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2401 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2402 case small_stmt:
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2403 /*
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2404 * expr_stmt \| print_stmt \| del_stmt \| pass_stmt \| flow_stmt
5236 b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	2405 * \| import_stmt \| global_stmt \| exec_stmt \| assert_stmt
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2406 */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2407 res = validate_small_stmt(tree);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2408 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2409 case flow_stmt:
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2410 res = (validate_numnodes(tree, 1, "flow_stmt")
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2411 && ((TYPE(CHILD(tree, 0)) == break_stmt)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2412 \|\| (TYPE(CHILD(tree, 0)) == continue_stmt)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2413 \|\| (TYPE(CHILD(tree, 0)) == return_stmt)
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2414 \|\| (TYPE(CHILD(tree, 0)) == raise_stmt)));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2415 if (res)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2416 next = CHILD(tree, 0);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2417 else if (nch == 1)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2418 err_string("Illegal flow_stmt type.");
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2419 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2420 /*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2421 * Compound statements.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2422 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2423 case simple_stmt:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2424 res = validate_simple_stmt(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2425 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2426 case compound_stmt:
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2427 res = validate_compound_stmt(tree);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2428 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2429 /*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2430 * Fundemental statements.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2431 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2432 case expr_stmt:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2433 res = validate_expr_stmt(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2434 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2435 case print_stmt:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2436 res = validate_print_stmt(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2437 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2438 case del_stmt:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2439 res = validate_del_stmt(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2440 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2441 case pass_stmt:
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2442 res = (validate_numnodes(tree, 1, "pass")
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2443 && validate_name(CHILD(tree, 0), "pass"));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2444 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2445 case break_stmt:
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2446 res = (validate_numnodes(tree, 1, "break")
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2447 && validate_name(CHILD(tree, 0), "break"));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2448 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2449 case continue_stmt:
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2450 res = (validate_numnodes(tree, 1, "continue")
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2451 && validate_name(CHILD(tree, 0), "continue"));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2452 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2453 case return_stmt:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2454 res = validate_return_stmt(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2455 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2456 case raise_stmt:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2457 res = validate_raise_stmt(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2458 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2459 case import_stmt:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2460 res = validate_import_stmt(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2461 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2462 case global_stmt:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2463 res = validate_global_stmt(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2464 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2465 case exec_stmt:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2466 res = validate_exec_stmt(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2467 break;
5236 b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	2468 case assert_stmt:
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	2469 res = validate_assert_stmt(tree);
b4e671bc1331 Support assert stmt. Guido van Rossum <guido@python.org> parents: 5039 diff changeset	2470 break;
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2471 case if_stmt:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2472 res = validate_if(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2473 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2474 case while_stmt:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2475 res = validate_while(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2476 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2477 case for_stmt:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2478 res = validate_for(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2479 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2480 case try_stmt:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2481 res = validate_try(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2482 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2483 case suite:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2484 res = validate_suite(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2485 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2486 /*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2487 * Expression nodes.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2488 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2489 case testlist:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2490 res = validate_testlist(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2491 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2492 case test:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2493 res = validate_test(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2494 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2495 case and_test:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2496 res = validate_and_test(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2497 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2498 case not_test:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2499 res = validate_not_test(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2500 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2501 case comparison:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2502 res = validate_comparison(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2503 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2504 case exprlist:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2505 res = validate_exprlist(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2506 break;
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2507 case comp_op:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2508 res = validate_comp_op(tree);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2509 break;
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2510 case expr:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2511 res = validate_expr(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2512 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2513 case xor_expr:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2514 res = validate_xor_expr(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2515 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2516 case and_expr:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2517 res = validate_and_expr(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2518 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2519 case shift_expr:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2520 res = validate_shift_expr(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2521 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2522 case arith_expr:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2523 res = validate_arith_expr(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2524 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2525 case term:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2526 res = validate_term(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2527 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2528 case factor:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2529 res = validate_factor(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2530 break;
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2531 case power:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2532 res = validate_power(tree);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2533 break;
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2534 case atom:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2535 res = validate_atom(tree);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2536 break;
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2537
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2538 default:
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2539 /* Hopefully never reached! */
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2540 err_string("Unrecogniged node type.");
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2541 res = 0;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2542 break;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2543 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2544 tree = next;
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2545 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2546 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2547
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2548 } /* validate_node() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2549
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2550
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2551 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2552 validate_expr_tree(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2553 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2554 {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2555 int res = validate_eval_input(tree);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2556
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2557 if (!res && !PyErr_Occurred())
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2558 err_string("Could not validate expression tuple.");
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2559
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2560 return (res);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2561
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2562 } /* validate_expr_tree() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2563
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2564
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2565 /* file_input:
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2566 * (NEWLINE \| stmt)* ENDMARKER
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2567 */
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2568 static int
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2569 validate_file_input(tree)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2570 node *tree;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2571 {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2572 int j = 0;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2573 int nch = NCH(tree) - 1;
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2574 int res = ((nch >= 0)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2575 && validate_ntype(CHILD(tree, nch), ENDMARKER));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2576
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2577 for ( ; res && (j < nch); ++j) {
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2578 if (TYPE(CHILD(tree, j)) == stmt)
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2579 res = validate_stmt(CHILD(tree, j));
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2580 else
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2581 res = validate_newline(CHILD(tree, j));
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2582 }
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2583 /* This stays in to prevent any internal failues from getting to the
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2584 * user. Hopefully, this won't be needed. If a user reports getting
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2585 * this, we have some debugging to do.
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2586 */
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2587 if (!res && !PyErr_Occurred())
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2588 err_string("VALIDATION FAILURE: report this to the maintainer!.");
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2589
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2590 return (res);
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2591
4099 3a3b36716689 Patches to make it compile with K&R C Guido van Rossum <guido@python.org> parents: 4092 diff changeset	2592 } /* validate_file_input() */
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2593
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2594
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2595 /* Functions exported by this module. Most of this should probably
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2596 * be converted into an AST object with methods, but that is better
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2597 * done directly in Python, allowing subclasses to be created directly.
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2598 * We'd really have to write a wrapper around it all anyway to allow
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2599 * inheritance.
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2600 */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2601 static PyMethodDef parser_functions[] = {
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2602 {"ast2tuple", parser_ast2tuple, 1,
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2603 "Creates a tuple-tree representation of an AST."},
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2604 {"ast2list", parser_ast2list, 1,
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2605 "Creates a list-tree representation of an AST."},
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2606 {"compileast", parser_compileast, 1,
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2607 "Compiles an AST object into a code object."},
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2608 {"expr", parser_expr, 1,
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2609 "Creates an AST object from an expression."},
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2610 {"isexpr", parser_isexpr, 1,
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2611 "Determines if an AST object was created from an expression."},
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2612 {"issuite", parser_issuite, 1,
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2613 "Determines if an AST object was created from a suite."},
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2614 {"suite", parser_suite, 1,
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2615 "Creates an AST object from a suite."},
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2616 {"sequence2ast", parser_tuple2ast, 1,
7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2617 "Creates an AST object from a tree representation."},
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2618 {"tuple2ast", parser_tuple2ast, 1,
4084 7f83e24d1d86 New batch from Fred Guido van Rossum <guido@python.org> parents: 3774 diff changeset	2619 "Creates an AST object from a tree representation."},
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2620
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2621 {0, 0, 0}
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2622 };
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2623
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2624
1406 474823e5f7dc * parsermodule.c, Makefile, config.c: rudimentary interface to the Python Guido van Rossum <guido@python.org> parents: diff changeset	2625 void
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2626 initparser()
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2627 {
5039 38032267968c Initialize the ob_type field of PyAST_Type dynamically (in Guido van Rossum <guido@python.org> parents: 4600 diff changeset	2628 PyObject* module;
38032267968c Initialize the ob_type field of PyAST_Type dynamically (in Guido van Rossum <guido@python.org> parents: 4600 diff changeset	2629 PyObject* dict;
38032267968c Initialize the ob_type field of PyAST_Type dynamically (in Guido van Rossum <guido@python.org> parents: 4600 diff changeset	2630
38032267968c Initialize the ob_type field of PyAST_Type dynamically (in Guido van Rossum <guido@python.org> parents: 4600 diff changeset	2631 PyAST_Type.ob_type = &PyType_Type;
38032267968c Initialize the ob_type field of PyAST_Type dynamically (in Guido van Rossum <guido@python.org> parents: 4600 diff changeset	2632 module = Py_InitModule("parser", parser_functions);
38032267968c Initialize the ob_type field of PyAST_Type dynamically (in Guido van Rossum <guido@python.org> parents: 4600 diff changeset	2633 dict = PyModule_GetDict(module);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2634
6440 42bc792ac69f initparser(): Use PyErr_NewException() to create the exception. Fred Drake <fdrake@acm.org> parents: 6361 diff changeset	2635 parser_error = PyErr_NewException("parser.ParserError", NULL, NULL);
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2636
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2637 if ((parser_error == 0)
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2638 \|\| (PyDict_SetItemString(dict, "ParserError", parser_error) != 0)) {
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2639 /*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2640 * This is serious.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2641 */
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2642 Py_FatalError("can't define parser.ParserError");
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2643 }
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2644 /*
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2645 * Nice to have, but don't cry if we fail.
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2646 */
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2647 Py_INCREF(&PyAST_Type);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2648 PyDict_SetItemString(dict, "ASTType", (PyObject*)&PyAST_Type);
4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2649
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2650 PyDict_SetItemString(dict, "__copyright__",
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2651 PyString_FromString(parser_copyright_string));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2652 PyDict_SetItemString(dict, "__doc__",
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2653 PyString_FromString(parser_doc_string));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2654 PyDict_SetItemString(dict, "__version__",
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2655 PyString_FromString(parser_version_string));
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2656
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2657 } /* initparser() */
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2658
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2659
8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2660 /*
3774 4c78d73c5667 New submission by Fred Drake. Guido van Rossum <guido@python.org> parents: 3336 diff changeset	2661 * end of parsermodule.c
3200 8f5ab1a6c914 Fred Drake's new parser module Guido van Rossum <guido@python.org> parents: 2150 diff changeset	2662 */

Mercurial > cpython-lru_cache-weakref

annotate Modules/parsermodule.c @ 6440:42bc792ac69f legacy-trunk