cpython-lru_cache-weakref: Objects/codeobject.c annotate

annotate Objects/codeobject.c @ 42334:e70cdce0e8b2

Merged revisions 56467-56482 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/p3yk ................ r56477 | martin.v.loewis | 2007-07-21 09:04:38 +0200 (Sa, 21 Jul 2007) | 11 lines Merged revisions 56466-56476 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r56476 | martin.v.loewis | 2007-07-21 08:55:02 +0200 (Sa, 21 Jul 2007) | 4 lines PEP 3123: Provide forward compatibility with Python 3.0, while keeping backwards compatibility. Add Py_Refcnt, Py_Type, Py_Size, and PyVarObject_HEAD_INIT. ........ ................ r56478 | martin.v.loewis | 2007-07-21 09:47:23 +0200 (Sa, 21 Jul 2007) | 2 lines PEP 3123: Use proper C inheritance for PyObject. ................ r56479 | martin.v.loewis | 2007-07-21 10:06:55 +0200 (Sa, 21 Jul 2007) | 3 lines Add longintrepr.h to Python.h, so that the compiler can see that PyFalse is really some kind of PyObject*. ................ r56480 | martin.v.loewis | 2007-07-21 10:47:18 +0200 (Sa, 21 Jul 2007) | 2 lines Qualify SHIFT, MASK, BASE. ................ r56482 | martin.v.loewis | 2007-07-21 19:10:57 +0200 (Sa, 21 Jul 2007) | 2 lines Correctly refer to _ob_next. ................

author	Martin v. Löwis <martin@v.loewis.de>
date	Sat, 21 Jul 2007 17:22:18 +0000
parents	cd125fe83051
children	01ee6311ba46

rev	line source
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	1 #include "Python.h"
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	2 #include "code.h"
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	3 #include "structmember.h"
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	4
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	5 #define NAME_CHARS \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	6 "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz"
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	7
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	8 /* all_name_chars(s): true iff all chars in s are valid NAME_CHARS */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	9
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	10 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	11 all_name_chars(unsigned char *s)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	12 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	13 static char ok_name_char[256];
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	14 static unsigned char name_chars = (unsigned char )NAME_CHARS;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	15
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	16 if (ok_name_char[*name_chars] == 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	17 unsigned char *p;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	18 for (p = name_chars; *p; p++)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	19 ok_name_char[*p] = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	20 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	21 while (*s) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	22 if (ok_name_char[*s++] == 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	23 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	24 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	25 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	26 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	27
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	28 static void
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	29 intern_strings(PyObject *tuple)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	30 {
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 35742 diff changeset	31 Py_ssize_t i;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	32
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	33 for (i = PyTuple_GET_SIZE(tuple); --i >= 0; ) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	34 PyObject *v = PyTuple_GET_ITEM(tuple, i);
42013 cd125fe83051 Make identifiers str (not str8) objects throughout. Martin v. Löwis <martin@v.loewis.de> parents: 41962 diff changeset	35 if (v == NULL \|\| !PyUnicode_CheckExact(v)) {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	36 Py_FatalError("non-string found in code slot");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	37 }
42013 cd125fe83051 Make identifiers str (not str8) objects throughout. Martin v. Löwis <martin@v.loewis.de> parents: 41962 diff changeset	38 PyUnicode_InternInPlace(&PyTuple_GET_ITEM(tuple, i));
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	39 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	40 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	41
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	42
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	43 PyCodeObject *
40215 1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	44 PyCode_New(int argcount, int kwonlyargcount,
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	45 int nlocals, int stacksize, int flags,
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	46 PyObject code, PyObject consts, PyObject *names,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	47 PyObject varnames, PyObject freevars, PyObject *cellvars,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	48 PyObject filename, PyObject name, int firstlineno,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	49 PyObject *lnotab)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	50 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	51 PyCodeObject *co;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 35742 diff changeset	52 Py_ssize_t i;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	53 /* Check argument types */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	54 if (argcount < 0 \|\| nlocals < 0 \|\|
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	55 code == NULL \|\|
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	56 consts == NULL \|\| !PyTuple_Check(consts) \|\|
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	57 names == NULL \|\| !PyTuple_Check(names) \|\|
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	58 varnames == NULL \|\| !PyTuple_Check(varnames) \|\|
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	59 freevars == NULL \|\| !PyTuple_Check(freevars) \|\|
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	60 cellvars == NULL \|\| !PyTuple_Check(cellvars) \|\|
42013 cd125fe83051 Make identifiers str (not str8) objects throughout. Martin v. Löwis <martin@v.loewis.de> parents: 41962 diff changeset	61 name == NULL \|\| (!PyString_Check(name) && !PyUnicode_Check(name)) \|\|
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	62 filename == NULL \|\| !PyString_Check(filename) \|\|
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	63 lnotab == NULL \|\| !PyString_Check(lnotab) \|\|
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	64 !PyObject_CheckReadBuffer(code)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	65 PyErr_BadInternalCall();
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	66 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	67 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	68 intern_strings(names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	69 intern_strings(varnames);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	70 intern_strings(freevars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	71 intern_strings(cellvars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	72 /* Intern selected string constants */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	73 for (i = PyTuple_Size(consts); --i >= 0; ) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	74 PyObject *v = PyTuple_GetItem(consts, i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	75 if (!PyString_Check(v))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	76 continue;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	77 if (!all_name_chars((unsigned char *)PyString_AS_STRING(v)))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	78 continue;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	79 PyString_InternInPlace(&PyTuple_GET_ITEM(consts, i));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	80 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	81 co = PyObject_NEW(PyCodeObject, &PyCode_Type);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	82 if (co != NULL) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	83 co->co_argcount = argcount;
40215 1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	84 co->co_kwonlyargcount = kwonlyargcount;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	85 co->co_nlocals = nlocals;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	86 co->co_stacksize = stacksize;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	87 co->co_flags = flags;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	88 Py_INCREF(code);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	89 co->co_code = code;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	90 Py_INCREF(consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	91 co->co_consts = consts;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	92 Py_INCREF(names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	93 co->co_names = names;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	94 Py_INCREF(varnames);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	95 co->co_varnames = varnames;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	96 Py_INCREF(freevars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	97 co->co_freevars = freevars;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	98 Py_INCREF(cellvars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	99 co->co_cellvars = cellvars;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	100 Py_INCREF(filename);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	101 co->co_filename = filename;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	102 Py_INCREF(name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	103 co->co_name = name;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	104 co->co_firstlineno = firstlineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	105 Py_INCREF(lnotab);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	106 co->co_lnotab = lnotab;
38453 29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk. Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	107 co->co_zombieframe = NULL;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	108 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	109 return co;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	110 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	111
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	112
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	113 #define OFF(x) offsetof(PyCodeObject, x)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	114
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	115 static PyMemberDef code_memberlist[] = {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	116 {"co_argcount", T_INT, OFF(co_argcount), READONLY},
40215 1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	117 {"co_kwonlyargcount", T_INT, OFF(co_kwonlyargcount), READONLY},
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	118 {"co_nlocals", T_INT, OFF(co_nlocals), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	119 {"co_stacksize",T_INT, OFF(co_stacksize), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	120 {"co_flags", T_INT, OFF(co_flags), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	121 {"co_code", T_OBJECT, OFF(co_code), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	122 {"co_consts", T_OBJECT, OFF(co_consts), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	123 {"co_names", T_OBJECT, OFF(co_names), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	124 {"co_varnames", T_OBJECT, OFF(co_varnames), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	125 {"co_freevars", T_OBJECT, OFF(co_freevars), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	126 {"co_cellvars", T_OBJECT, OFF(co_cellvars), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	127 {"co_filename", T_OBJECT, OFF(co_filename), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	128 {"co_name", T_OBJECT, OFF(co_name), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	129 {"co_firstlineno", T_INT, OFF(co_firstlineno), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	130 {"co_lnotab", T_OBJECT, OFF(co_lnotab), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	131 {NULL} /* Sentinel */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	132 };
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	133
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	134 /* Helper for code_new: return a shallow copy of a tuple that is
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	135 guaranteed to contain exact strings, by converting string subclasses
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	136 to exact strings and complaining if a non-string is found. */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	137 static PyObject*
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	138 validate_and_copy_tuple(PyObject *tup)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	139 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	140 PyObject *newtuple;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	141 PyObject *item;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 35742 diff changeset	142 Py_ssize_t i, len;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	143
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	144 len = PyTuple_GET_SIZE(tup);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	145 newtuple = PyTuple_New(len);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	146 if (newtuple == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	147 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	148
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	149 for (i = 0; i < len; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	150 item = PyTuple_GET_ITEM(tup, i);
42013 cd125fe83051 Make identifiers str (not str8) objects throughout. Martin v. Löwis <martin@v.loewis.de> parents: 41962 diff changeset	151 if (PyUnicode_CheckExact(item)) {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	152 Py_INCREF(item);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	153 }
42013 cd125fe83051 Make identifiers str (not str8) objects throughout. Martin v. Löwis <martin@v.loewis.de> parents: 41962 diff changeset	154 else if (!PyUnicode_Check(item)) {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	155 PyErr_Format(
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	156 PyExc_TypeError,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	157 "name tuples must contain only "
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	158 "strings, not '%.500s'",
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	159 item->ob_type->tp_name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	160 Py_DECREF(newtuple);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	161 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	162 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	163 else {
42013 cd125fe83051 Make identifiers str (not str8) objects throughout. Martin v. Löwis <martin@v.loewis.de> parents: 41962 diff changeset	164 item = PyUnicode_FromUnicode(
cd125fe83051 Make identifiers str (not str8) objects throughout. Martin v. Löwis <martin@v.loewis.de> parents: 41962 diff changeset	165 PyUnicode_AS_UNICODE(item),
cd125fe83051 Make identifiers str (not str8) objects throughout. Martin v. Löwis <martin@v.loewis.de> parents: 41962 diff changeset	166 PyUnicode_GET_SIZE(item));
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	167 if (item == NULL) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	168 Py_DECREF(newtuple);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	169 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	170 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	171 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	172 PyTuple_SET_ITEM(newtuple, i, item);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	173 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	174
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	175 return newtuple;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	176 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	177
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	178 PyDoc_STRVAR(code_doc,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	179 "code(argcount, nlocals, stacksize, flags, codestring, constants, names,\n\
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	180 varnames, filename, name, firstlineno, lnotab[, freevars[, cellvars]])\n\
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	181 \n\
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	182 Create a code object. Not for the faint of heart.");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	183
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	184 static PyObject *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	185 code_new(PyTypeObject type, PyObject args, PyObject *kw)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	186 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	187 int argcount;
40215 1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	188 int kwonlyargcount;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	189 int nlocals;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	190 int stacksize;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	191 int flags;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	192 PyObject *co = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	193 PyObject *code;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	194 PyObject *consts;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	195 PyObject names, ournames = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	196 PyObject varnames, ourvarnames = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	197 PyObject freevars = NULL, ourfreevars = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	198 PyObject cellvars = NULL, ourcellvars = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	199 PyObject *filename;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	200 PyObject *name;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	201 int firstlineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	202 PyObject *lnotab;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	203
40215 1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	204 if (!PyArg_ParseTuple(args, "iiiiiSO!O!O!SSiS\|O!O!:code",
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	205 &argcount, &kwonlyargcount,
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	206 &nlocals, &stacksize, &flags,
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	207 &code,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	208 &PyTuple_Type, &consts,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	209 &PyTuple_Type, &names,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	210 &PyTuple_Type, &varnames,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	211 &filename, &name,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	212 &firstlineno, &lnotab,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	213 &PyTuple_Type, &freevars,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	214 &PyTuple_Type, &cellvars))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	215 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	216
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	217 if (argcount < 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	218 PyErr_SetString(
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	219 PyExc_ValueError,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	220 "code: argcount must not be negative");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	221 goto cleanup;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	222 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	223
40215 1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	224 if (kwonlyargcount < 0) {
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	225 PyErr_SetString(
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	226 PyExc_ValueError,
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	227 "code: kwonlyargcount must not be negative");
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	228 goto cleanup;
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	229 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	230 if (nlocals < 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	231 PyErr_SetString(
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	232 PyExc_ValueError,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	233 "code: nlocals must not be negative");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	234 goto cleanup;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	235 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	236
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	237 ournames = validate_and_copy_tuple(names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	238 if (ournames == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	239 goto cleanup;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	240 ourvarnames = validate_and_copy_tuple(varnames);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	241 if (ourvarnames == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	242 goto cleanup;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	243 if (freevars)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	244 ourfreevars = validate_and_copy_tuple(freevars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	245 else
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	246 ourfreevars = PyTuple_New(0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	247 if (ourfreevars == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	248 goto cleanup;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	249 if (cellvars)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	250 ourcellvars = validate_and_copy_tuple(cellvars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	251 else
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	252 ourcellvars = PyTuple_New(0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	253 if (ourcellvars == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	254 goto cleanup;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	255
40215 1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	256 co = (PyObject *)PyCode_New(argcount, kwonlyargcount,
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	257 nlocals, stacksize, flags,
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	258 code, consts, ournames, ourvarnames,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	259 ourfreevars, ourcellvars, filename,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	260 name, firstlineno, lnotab);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	261 cleanup:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	262 Py_XDECREF(ournames);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	263 Py_XDECREF(ourvarnames);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	264 Py_XDECREF(ourfreevars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	265 Py_XDECREF(ourcellvars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	266 return co;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	267 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	268
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	269 static void
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	270 code_dealloc(PyCodeObject *co)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	271 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	272 Py_XDECREF(co->co_code);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	273 Py_XDECREF(co->co_consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	274 Py_XDECREF(co->co_names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	275 Py_XDECREF(co->co_varnames);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	276 Py_XDECREF(co->co_freevars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	277 Py_XDECREF(co->co_cellvars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	278 Py_XDECREF(co->co_filename);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	279 Py_XDECREF(co->co_name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	280 Py_XDECREF(co->co_lnotab);
38453 29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk. Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	281 if (co->co_zombieframe != NULL)
29ae5e0fc348 Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk. Thomas Wouters <thomas@python.org> parents: 37879 diff changeset	282 PyObject_GC_Del(co->co_zombieframe);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	283 PyObject_DEL(co);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	284 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	285
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	286 static PyObject *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	287 code_repr(PyCodeObject *co)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	288 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	289 int lineno = -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	290 char *filename = "???";
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	291 char *name = "???";
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	292
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	293 if (co->co_firstlineno != 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	294 lineno = co->co_firstlineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	295 if (co->co_filename && PyString_Check(co->co_filename))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	296 filename = PyString_AS_STRING(co->co_filename);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	297 if (co->co_name && PyString_Check(co->co_name))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	298 name = PyString_AS_STRING(co->co_name);
41962 11930dcf9d4f Use PyUnicode_FromFormat() directly. Walter Dörwald <walter@livinglogic.de> parents: 41769 diff changeset	299 return PyUnicode_FromFormat(
11930dcf9d4f Use PyUnicode_FromFormat() directly. Walter Dörwald <walter@livinglogic.de> parents: 41769 diff changeset	300 "<code object %.100s at %p, file \"%.300s\", line %d>",
11930dcf9d4f Use PyUnicode_FromFormat() directly. Walter Dörwald <walter@livinglogic.de> parents: 41769 diff changeset	301 name, co, filename, lineno);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	302 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	303
39644 13d5e5f0e993 Restructure comparison dramatically. There is no longer a default Guido van Rossum <guido@python.org> parents: 39442 diff changeset	304 static PyObject *
13d5e5f0e993 Restructure comparison dramatically. There is no longer a default Guido van Rossum <guido@python.org> parents: 39442 diff changeset	305 code_richcompare(PyObject self, PyObject other, int op)
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	306 {
39650 69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	307 PyCodeObject co, cp;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	308 int eq;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	309 PyObject *res;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	310
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	311 if ((op != Py_EQ && op != Py_NE) \|\|
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	312 !PyCode_Check(self) \|\|
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	313 !PyCode_Check(other)) {
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	314 Py_INCREF(Py_NotImplemented);
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	315 return Py_NotImplemented;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	316 }
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	317
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	318 co = (PyCodeObject *)self;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	319 cp = (PyCodeObject *)other;
39644 13d5e5f0e993 Restructure comparison dramatically. There is no longer a default Guido van Rossum <guido@python.org> parents: 39442 diff changeset	320
39658 a5048c8d8f33 Fix a bunch of compiler warnings. In at least one case these were serious bugs! Guido van Rossum <guido@python.org> parents: 39650 diff changeset	321 eq = PyObject_RichCompareBool(co->co_name, cp->co_name, Py_EQ);
39650 69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	322 if (eq <= 0) goto unequal;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	323 eq = co->co_argcount == cp->co_argcount;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	324 if (!eq) goto unequal;
40215 1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	325 eq = co->co_kwonlyargcount == cp->co_kwonlyargcount;
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	326 if (!eq) goto unequal;
39650 69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	327 eq = co->co_nlocals == cp->co_nlocals;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	328 if (!eq) goto unequal;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	329 eq = co->co_flags == cp->co_flags;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	330 if (!eq) goto unequal;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	331 eq = co->co_firstlineno == cp->co_firstlineno;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	332 if (!eq) goto unequal;
39658 a5048c8d8f33 Fix a bunch of compiler warnings. In at least one case these were serious bugs! Guido van Rossum <guido@python.org> parents: 39650 diff changeset	333 eq = PyObject_RichCompareBool(co->co_code, cp->co_code, Py_EQ);
39650 69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	334 if (eq <= 0) goto unequal;
39658 a5048c8d8f33 Fix a bunch of compiler warnings. In at least one case these were serious bugs! Guido van Rossum <guido@python.org> parents: 39650 diff changeset	335 eq = PyObject_RichCompareBool(co->co_consts, cp->co_consts, Py_EQ);
39650 69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	336 if (eq <= 0) goto unequal;
39658 a5048c8d8f33 Fix a bunch of compiler warnings. In at least one case these were serious bugs! Guido van Rossum <guido@python.org> parents: 39650 diff changeset	337 eq = PyObject_RichCompareBool(co->co_names, cp->co_names, Py_EQ);
39650 69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	338 if (eq <= 0) goto unequal;
39658 a5048c8d8f33 Fix a bunch of compiler warnings. In at least one case these were serious bugs! Guido van Rossum <guido@python.org> parents: 39650 diff changeset	339 eq = PyObject_RichCompareBool(co->co_varnames, cp->co_varnames, Py_EQ);
39650 69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	340 if (eq <= 0) goto unequal;
39658 a5048c8d8f33 Fix a bunch of compiler warnings. In at least one case these were serious bugs! Guido van Rossum <guido@python.org> parents: 39650 diff changeset	341 eq = PyObject_RichCompareBool(co->co_freevars, cp->co_freevars, Py_EQ);
39650 69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	342 if (eq <= 0) goto unequal;
39658 a5048c8d8f33 Fix a bunch of compiler warnings. In at least one case these were serious bugs! Guido van Rossum <guido@python.org> parents: 39650 diff changeset	343 eq = PyObject_RichCompareBool(co->co_cellvars, cp->co_cellvars, Py_EQ);
39650 69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	344 if (eq <= 0) goto unequal;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	345
39650 69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	346 if (op == Py_EQ)
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	347 res = Py_True;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	348 else
39650 69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	349 res = Py_False;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	350 goto done;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	351
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	352 unequal:
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	353 if (eq < 0)
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	354 return NULL;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	355 if (op == Py_NE)
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	356 res = Py_True;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	357 else
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	358 res = Py_False;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	359
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	360 done:
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	361 Py_INCREF(res);
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	362 return res;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	363 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	364
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	365 static long
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	366 code_hash(PyCodeObject *co)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	367 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	368 long h, h0, h1, h2, h3, h4, h5, h6;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	369 h0 = PyObject_Hash(co->co_name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	370 if (h0 == -1) return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	371 h1 = PyObject_Hash(co->co_code);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	372 if (h1 == -1) return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	373 h2 = PyObject_Hash(co->co_consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	374 if (h2 == -1) return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	375 h3 = PyObject_Hash(co->co_names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	376 if (h3 == -1) return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	377 h4 = PyObject_Hash(co->co_varnames);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	378 if (h4 == -1) return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	379 h5 = PyObject_Hash(co->co_freevars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	380 if (h5 == -1) return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	381 h6 = PyObject_Hash(co->co_cellvars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	382 if (h6 == -1) return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	383 h = h0 ^ h1 ^ h2 ^ h3 ^ h4 ^ h5 ^ h6 ^
40215 1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	384 co->co_argcount ^ co->co_kwonlyargcount ^
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	385 co->co_nlocals ^ co->co_flags;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	386 if (h == -1) h = -2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	387 return h;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	388 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	389
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	390 /* XXX code objects need to participate in GC? */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	391
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	392 PyTypeObject PyCode_Type = {
42334 e70cdce0e8b2 Merged revisions 56467-56482 via svnmerge from Martin v. Löwis <martin@v.loewis.de> parents: 42013 diff changeset	393 PyVarObject_HEAD_INIT(&PyType_Type, 0)
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	394 "code",
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	395 sizeof(PyCodeObject),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	396 0,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	397 (destructor)code_dealloc, /* tp_dealloc */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	398 0, /* tp_print */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	399 0, /* tp_getattr */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	400 0, /* tp_setattr */
39644 13d5e5f0e993 Restructure comparison dramatically. There is no longer a default Guido van Rossum <guido@python.org> parents: 39442 diff changeset	401 0, /* tp_compare */
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	402 (reprfunc)code_repr, /* tp_repr */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	403 0, /* tp_as_number */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	404 0, /* tp_as_sequence */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	405 0, /* tp_as_mapping */
39650 69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	406 (hashfunc)code_hash, /* tp_hash */
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	407 0, /* tp_call */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	408 0, /* tp_str */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	409 PyObject_GenericGetAttr, /* tp_getattro */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	410 0, /* tp_setattro */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	411 0, /* tp_as_buffer */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	412 Py_TPFLAGS_DEFAULT, /* tp_flags */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	413 code_doc, /* tp_doc */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	414 0, /* tp_traverse */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	415 0, /* tp_clear */
39650 69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	416 code_richcompare, /* tp_richcompare */
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	417 0, /* tp_weaklistoffset */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	418 0, /* tp_iter */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	419 0, /* tp_iternext */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	420 0, /* tp_methods */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	421 code_memberlist, /* tp_members */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	422 0, /* tp_getset */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	423 0, /* tp_base */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	424 0, /* tp_dict */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	425 0, /* tp_descr_get */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	426 0, /* tp_descr_set */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	427 0, /* tp_dictoffset */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	428 0, /* tp_init */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	429 0, /* tp_alloc */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	430 code_new, /* tp_new */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	431 };
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	432
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	433 /* All about c_lnotab.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	434
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	435 c_lnotab is an array of unsigned bytes disguised as a Python string. In -O
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	436 mode, SET_LINENO opcodes aren't generated, and bytecode offsets are mapped
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	437 to source code line #s (when needed for tracebacks) via c_lnotab instead.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	438 The array is conceptually a list of
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	439 (bytecode offset increment, line number increment)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	440 pairs. The details are important and delicate, best illustrated by example:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	441
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	442 byte code offset source code line number
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	443 0 1
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	444 6 2
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	445 50 7
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	446 350 307
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	447 361 308
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	448
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	449 The first trick is that these numbers aren't stored, only the increments
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	450 from one row to the next (this doesn't really work, but it's a start):
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	451
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	452 0, 1, 6, 1, 44, 5, 300, 300, 11, 1
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	453
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	454 The second trick is that an unsigned byte can't hold negative values, or
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	455 values larger than 255, so (a) there's a deep assumption that byte code
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	456 offsets and their corresponding line #s both increase monotonically, and (b)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	457 if at least one column jumps by more than 255 from one row to the next, more
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	458 than one pair is written to the table. In case #b, there's no way to know
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	459 from looking at the table later how many were written. That's the delicate
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	460 part. A user of c_lnotab desiring to find the source line number
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	461 corresponding to a bytecode address A should do something like this
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	462
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	463 lineno = addr = 0
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	464 for addr_incr, line_incr in c_lnotab:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	465 addr += addr_incr
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	466 if addr > A:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	467 return lineno
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	468 lineno += line_incr
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	469
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	470 In order for this to work, when the addr field increments by more than 255,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	471 the line # increment in each pair generated must be 0 until the remaining addr
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	472 increment is < 256. So, in the example above, com_set_lineno should not (as
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	473 was actually done until 2.2) expand 300, 300 to 255, 255, 45, 45, but to
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	474 255, 0, 45, 255, 0, 45.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	475 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	476
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	477 int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	478 PyCode_Addr2Line(PyCodeObject *co, int addrq)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	479 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	480 int size = PyString_Size(co->co_lnotab) / 2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	481 unsigned char p = (unsigned char)PyString_AsString(co->co_lnotab);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	482 int line = co->co_firstlineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	483 int addr = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	484 while (--size >= 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	485 addr += *p++;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	486 if (addr > addrq)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	487 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	488 line += *p++;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	489 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	490 return line;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	491 }
37879 f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	492
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	493 /*
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	494 Check whether the current instruction is at the start of a line.
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	495
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	496 */
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	497
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	498 /* The theory of SET_LINENO-less tracing.
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	499
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	500 In a nutshell, we use the co_lnotab field of the code object
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	501 to tell when execution has moved onto a different line.
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	502
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	503 As mentioned above, the basic idea is so set things up so
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	504 that
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	505
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	506 instr_lb <= frame->f_lasti < instr_ub
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	507
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	508 is true so long as execution does not change lines.
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	509
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	510 This is all fairly simple. Digging the information out of
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	511 co_lnotab takes some work, but is conceptually clear.
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	512
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	513 Somewhat harder to explain is why we don't always call the
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	514 line trace function when the above test fails.
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	515
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	516 Consider this code:
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	517
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	518 1: def f(a):
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	519 2: if a:
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	520 3: print 1
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	521 4: else:
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	522 5: print 2
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	523
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	524 which compiles to this:
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	525
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	526 2 0 LOAD_FAST 0 (a)
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	527 3 JUMP_IF_FALSE 9 (to 15)
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	528 6 POP_TOP
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	529
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	530 3 7 LOAD_CONST 1 (1)
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	531 10 PRINT_ITEM
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	532 11 PRINT_NEWLINE
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	533 12 JUMP_FORWARD 6 (to 21)
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	534 >> 15 POP_TOP
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	535
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	536 5 16 LOAD_CONST 2 (2)
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	537 19 PRINT_ITEM
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	538 20 PRINT_NEWLINE
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	539 >> 21 LOAD_CONST 0 (None)
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	540 24 RETURN_VALUE
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	541
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	542 If 'a' is false, execution will jump to instruction at offset
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	543 15 and the co_lnotab will claim that execution has moved to
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	544 line 3. This is at best misleading. In this case we could
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	545 associate the POP_TOP with line 4, but that doesn't make
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	546 sense in all cases (I think).
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	547
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	548 What we do is only call the line trace function if the co_lnotab
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	549 indicates we have jumped to the start of a line, i.e. if the
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	550 current instruction offset matches the offset given for the
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	551 start of a line by the co_lnotab.
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	552
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	553 This also takes care of the situation where 'a' is true.
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	554 Execution will jump from instruction offset 12 to offset 21.
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	555 Then the co_lnotab would imply that execution has moved to line
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	556 5, which is again misleading.
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	557
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	558 Why do we set f_lineno when tracing? Well, consider the code
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	559 above when 'a' is true. If stepping through this with 'n' in
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	560 pdb, you would stop at line 1 with a "call" type event, then
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	561 line events on lines 2 and 3, then a "return" type event -- but
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	562 you would be shown line 5 during this event. This is a change
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	563 from the behaviour in 2.2 and before, and I've found it
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	564 confusing in practice. By setting and using f_lineno when
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	565 tracing, one can report a line number different from that
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	566 suggested by f_lasti on this one occasion where it's desirable.
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	567 */
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	568
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	569
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	570 int
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	571 PyCode_CheckLineNumber(PyCodeObject* co, int lasti, PyAddrPair *bounds)
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	572 {
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	573 int size, addr, line;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	574 unsigned char* p;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	575
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	576 p = (unsigned char*)PyString_AS_STRING(co->co_lnotab);
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	577 size = PyString_GET_SIZE(co->co_lnotab) / 2;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	578
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	579 addr = 0;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	580 line = co->co_firstlineno;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	581 assert(line > 0);
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	582
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	583 /* possible optimization: if f->f_lasti == instr_ub
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	584 (likely to be a common case) then we already know
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	585 instr_lb -- if we stored the matching value of p
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	586 somwhere we could skip the first while loop. */
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	587
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	588 /* see comments in compile.c for the description of
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	589 co_lnotab. A point to remember: increments to p
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	590 should come in pairs -- although we don't care about
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	591 the line increments here, treating them as byte
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	592 increments gets confusing, to say the least. */
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	593
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	594 bounds->ap_lower = 0;
37879 f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	595 while (size > 0) {
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	596 if (addr + *p > lasti)
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	597 break;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	598 addr += *p++;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	599 if (*p)
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	600 bounds->ap_lower = addr;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	601 line += *p++;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	602 --size;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	603 }
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	604
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	605 /* If lasti and addr don't match exactly, we don't want to
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	606 change the lineno slot on the frame or execute a trace
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	607 function. Return -1 instead.
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	608 */
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	609 if (addr != lasti)
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	610 line = -1;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	611
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	612 if (size > 0) {
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	613 while (--size >= 0) {
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	614 addr += *p++;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	615 if (*p++)
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	616 break;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	617 }
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	618 bounds->ap_upper = addr;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	619 }
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	620 else {
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	621 bounds->ap_upper = INT_MAX;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	622 }
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	623
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	624 return line;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	625 }

Mercurial > cpython-lru_cache-weakref

annotate Objects/codeobject.c @ 42334:e70cdce0e8b2