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

annotate Modules/parsermodule.c @ 4566:6403c94de50d legacy-trunk

Added safeguard against failure in __del__.

author	Guido van Rossum <guido@python.org>
date	Wed, 27 Nov 1996 19:39:58 +0000
parents	65d2d8e67da3
children	d36250aefb82

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

Mercurial > cpython-lru_cache-weakref

annotate Modules/parsermodule.c @ 4566:6403c94de50d legacy-trunk