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

annotate Objects/codeobject.c @ 42802:01ee6311ba46

Ensure that code object names (co_name) are unicode. Verify that they print properly too.

author	Neal Norwitz <nnorwitz@gmail.com>
date	Fri, 24 Aug 2007 23:12:06 +0000
parents	e70cdce0e8b2
children	19319e70fc3e

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 }
42802 01ee6311ba46 Ensure that code object names (co_name) are unicode. Neal Norwitz <nnorwitz@gmail.com> parents: 42334 diff changeset	68 if (PyString_Check(name)) {
01ee6311ba46 Ensure that code object names (co_name) are unicode. Neal Norwitz <nnorwitz@gmail.com> parents: 42334 diff changeset	69 name = PyUnicode_FromString(PyString_AS_STRING(name));
01ee6311ba46 Ensure that code object names (co_name) are unicode. Neal Norwitz <nnorwitz@gmail.com> parents: 42334 diff changeset	70 if (name == NULL)
01ee6311ba46 Ensure that code object names (co_name) are unicode. Neal Norwitz <nnorwitz@gmail.com> parents: 42334 diff changeset	71 return NULL;
01ee6311ba46 Ensure that code object names (co_name) are unicode. Neal Norwitz <nnorwitz@gmail.com> parents: 42334 diff changeset	72 } else {
01ee6311ba46 Ensure that code object names (co_name) are unicode. Neal Norwitz <nnorwitz@gmail.com> parents: 42334 diff changeset	73 Py_INCREF(name);
01ee6311ba46 Ensure that code object names (co_name) are unicode. Neal Norwitz <nnorwitz@gmail.com> parents: 42334 diff changeset	74 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	75 intern_strings(names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	76 intern_strings(varnames);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	77 intern_strings(freevars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	78 intern_strings(cellvars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	79 /* Intern selected string constants */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	80 for (i = PyTuple_Size(consts); --i >= 0; ) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	81 PyObject *v = PyTuple_GetItem(consts, i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	82 if (!PyString_Check(v))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	83 continue;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	84 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	85 continue;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	86 PyString_InternInPlace(&PyTuple_GET_ITEM(consts, i));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	87 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	88 co = PyObject_NEW(PyCodeObject, &PyCode_Type);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	89 if (co != NULL) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	90 co->co_argcount = argcount;
40215 1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	91 co->co_kwonlyargcount = kwonlyargcount;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	92 co->co_nlocals = nlocals;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	93 co->co_stacksize = stacksize;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	94 co->co_flags = flags;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	95 Py_INCREF(code);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	96 co->co_code = code;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	97 Py_INCREF(consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	98 co->co_consts = consts;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	99 Py_INCREF(names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	100 co->co_names = names;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	101 Py_INCREF(varnames);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	102 co->co_varnames = varnames;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	103 Py_INCREF(freevars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	104 co->co_freevars = freevars;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	105 Py_INCREF(cellvars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	106 co->co_cellvars = cellvars;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	107 Py_INCREF(filename);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	108 co->co_filename = filename;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	109 Py_INCREF(name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	110 co->co_name = name;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	111 co->co_firstlineno = firstlineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	112 Py_INCREF(lnotab);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	113 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	114 co->co_zombieframe = NULL;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	115 }
42802 01ee6311ba46 Ensure that code object names (co_name) are unicode. Neal Norwitz <nnorwitz@gmail.com> parents: 42334 diff changeset	116 Py_DECREF(name);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	117 return co;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	118 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	119
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	120
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	121 #define OFF(x) offsetof(PyCodeObject, x)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	122
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	123 static PyMemberDef code_memberlist[] = {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	124 {"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	125 {"co_kwonlyargcount", T_INT, OFF(co_kwonlyargcount), READONLY},
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	126 {"co_nlocals", T_INT, OFF(co_nlocals), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	127 {"co_stacksize",T_INT, OFF(co_stacksize), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	128 {"co_flags", T_INT, OFF(co_flags), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	129 {"co_code", T_OBJECT, OFF(co_code), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	130 {"co_consts", T_OBJECT, OFF(co_consts), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	131 {"co_names", T_OBJECT, OFF(co_names), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	132 {"co_varnames", T_OBJECT, OFF(co_varnames), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	133 {"co_freevars", T_OBJECT, OFF(co_freevars), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	134 {"co_cellvars", T_OBJECT, OFF(co_cellvars), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	135 {"co_filename", T_OBJECT, OFF(co_filename), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	136 {"co_name", T_OBJECT, OFF(co_name), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	137 {"co_firstlineno", T_INT, OFF(co_firstlineno), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	138 {"co_lnotab", T_OBJECT, OFF(co_lnotab), READONLY},
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	139 {NULL} /* Sentinel */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	140 };
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	141
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	142 /* 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	143 guaranteed to contain exact strings, by converting string subclasses
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	144 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	145 static PyObject*
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	146 validate_and_copy_tuple(PyObject *tup)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	147 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	148 PyObject *newtuple;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	149 PyObject *item;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 35742 diff changeset	150 Py_ssize_t i, len;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	151
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	152 len = PyTuple_GET_SIZE(tup);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	153 newtuple = PyTuple_New(len);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	154 if (newtuple == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	155 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	156
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	157 for (i = 0; i < len; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	158 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	159 if (PyUnicode_CheckExact(item)) {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	160 Py_INCREF(item);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	161 }
42013 cd125fe83051 Make identifiers str (not str8) objects throughout. Martin v. Löwis <martin@v.loewis.de> parents: 41962 diff changeset	162 else if (!PyUnicode_Check(item)) {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	163 PyErr_Format(
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	164 PyExc_TypeError,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	165 "name tuples must contain only "
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	166 "strings, not '%.500s'",
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	167 item->ob_type->tp_name);
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 else {
42013 cd125fe83051 Make identifiers str (not str8) objects throughout. Martin v. Löwis <martin@v.loewis.de> parents: 41962 diff changeset	172 item = PyUnicode_FromUnicode(
cd125fe83051 Make identifiers str (not str8) objects throughout. Martin v. Löwis <martin@v.loewis.de> parents: 41962 diff changeset	173 PyUnicode_AS_UNICODE(item),
cd125fe83051 Make identifiers str (not str8) objects throughout. Martin v. Löwis <martin@v.loewis.de> parents: 41962 diff changeset	174 PyUnicode_GET_SIZE(item));
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	175 if (item == NULL) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	176 Py_DECREF(newtuple);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	177 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	178 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	179 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	180 PyTuple_SET_ITEM(newtuple, i, item);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	181 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	182
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	183 return newtuple;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	184 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	185
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	186 PyDoc_STRVAR(code_doc,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	187 "code(argcount, nlocals, stacksize, flags, codestring, constants, names,\n\
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	188 varnames, filename, name, firstlineno, lnotab[, freevars[, cellvars]])\n\
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	189 \n\
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	190 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	191
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	192 static PyObject *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	193 code_new(PyTypeObject type, PyObject args, PyObject *kw)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	194 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	195 int argcount;
40215 1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	196 int kwonlyargcount;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	197 int nlocals;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	198 int stacksize;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	199 int flags;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	200 PyObject *co = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	201 PyObject *code;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	202 PyObject *consts;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	203 PyObject names, ournames = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	204 PyObject varnames, ourvarnames = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	205 PyObject freevars = NULL, ourfreevars = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	206 PyObject cellvars = NULL, ourcellvars = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	207 PyObject *filename;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	208 PyObject *name;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	209 int firstlineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	210 PyObject *lnotab;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	211
40215 1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	212 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	213 &argcount, &kwonlyargcount,
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	214 &nlocals, &stacksize, &flags,
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	215 &code,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	216 &PyTuple_Type, &consts,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	217 &PyTuple_Type, &names,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	218 &PyTuple_Type, &varnames,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	219 &filename, &name,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	220 &firstlineno, &lnotab,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	221 &PyTuple_Type, &freevars,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	222 &PyTuple_Type, &cellvars))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	223 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	224
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	225 if (argcount < 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	226 PyErr_SetString(
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	227 PyExc_ValueError,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	228 "code: argcount must not be negative");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	229 goto cleanup;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	230 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	231
40215 1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	232 if (kwonlyargcount < 0) {
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	233 PyErr_SetString(
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	234 PyExc_ValueError,
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	235 "code: kwonlyargcount must not be negative");
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	236 goto cleanup;
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	237 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	238 if (nlocals < 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	239 PyErr_SetString(
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	240 PyExc_ValueError,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	241 "code: nlocals must not be negative");
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 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	244
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	245 ournames = validate_and_copy_tuple(names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	246 if (ournames == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	247 goto cleanup;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	248 ourvarnames = validate_and_copy_tuple(varnames);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	249 if (ourvarnames == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	250 goto cleanup;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	251 if (freevars)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	252 ourfreevars = validate_and_copy_tuple(freevars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	253 else
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	254 ourfreevars = PyTuple_New(0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	255 if (ourfreevars == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	256 goto cleanup;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	257 if (cellvars)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	258 ourcellvars = validate_and_copy_tuple(cellvars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	259 else
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	260 ourcellvars = PyTuple_New(0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	261 if (ourcellvars == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	262 goto cleanup;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	263
40215 1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	264 co = (PyObject *)PyCode_New(argcount, kwonlyargcount,
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	265 nlocals, stacksize, flags,
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	266 code, consts, ournames, ourvarnames,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	267 ourfreevars, ourcellvars, filename,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	268 name, firstlineno, lnotab);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	269 cleanup:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	270 Py_XDECREF(ournames);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	271 Py_XDECREF(ourvarnames);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	272 Py_XDECREF(ourfreevars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	273 Py_XDECREF(ourcellvars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	274 return co;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	275 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	276
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	277 static void
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	278 code_dealloc(PyCodeObject *co)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	279 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	280 Py_XDECREF(co->co_code);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	281 Py_XDECREF(co->co_consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	282 Py_XDECREF(co->co_names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	283 Py_XDECREF(co->co_varnames);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	284 Py_XDECREF(co->co_freevars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	285 Py_XDECREF(co->co_cellvars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	286 Py_XDECREF(co->co_filename);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	287 Py_XDECREF(co->co_name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	288 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	289 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	290 PyObject_GC_Del(co->co_zombieframe);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	291 PyObject_DEL(co);
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
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	294 static PyObject *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	295 code_repr(PyCodeObject *co)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	296 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	297 int lineno = -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	298 char *filename = "???";
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	299
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	300 if (co->co_firstlineno != 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	301 lineno = co->co_firstlineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	302 if (co->co_filename && PyString_Check(co->co_filename))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	303 filename = PyString_AS_STRING(co->co_filename);
41962 11930dcf9d4f Use PyUnicode_FromFormat() directly. Walter Dörwald <walter@livinglogic.de> parents: 41769 diff changeset	304 return PyUnicode_FromFormat(
42802 01ee6311ba46 Ensure that code object names (co_name) are unicode. Neal Norwitz <nnorwitz@gmail.com> parents: 42334 diff changeset	305 "<code object %.100U at %p, file \"%.300s\", line %d>",
01ee6311ba46 Ensure that code object names (co_name) are unicode. Neal Norwitz <nnorwitz@gmail.com> parents: 42334 diff changeset	306 co->co_name, co, filename, lineno);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	307 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	308
39644 13d5e5f0e993 Restructure comparison dramatically. There is no longer a default Guido van Rossum <guido@python.org> parents: 39442 diff changeset	309 static PyObject *
13d5e5f0e993 Restructure comparison dramatically. There is no longer a default Guido van Rossum <guido@python.org> parents: 39442 diff changeset	310 code_richcompare(PyObject self, PyObject other, int op)
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	311 {
39650 69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	312 PyCodeObject co, cp;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	313 int eq;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	314 PyObject *res;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	315
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	316 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	317 !PyCode_Check(self) \|\|
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	318 !PyCode_Check(other)) {
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	319 Py_INCREF(Py_NotImplemented);
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	320 return Py_NotImplemented;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	321 }
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	322
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	323 co = (PyCodeObject *)self;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	324 cp = (PyCodeObject *)other;
39644 13d5e5f0e993 Restructure comparison dramatically. There is no longer a default Guido van Rossum <guido@python.org> parents: 39442 diff changeset	325
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	326 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	327 if (eq <= 0) goto unequal;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	328 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	329 if (!eq) goto unequal;
40215 1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	330 eq = co->co_kwonlyargcount == cp->co_kwonlyargcount;
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	331 if (!eq) goto unequal;
39650 69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	332 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	333 if (!eq) goto unequal;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	334 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	335 if (!eq) goto unequal;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	336 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	337 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	338 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	339 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	340 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	341 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	342 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	343 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	344 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	345 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	346 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	347 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	348 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	349 if (eq <= 0) goto unequal;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	350
39650 69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	351 if (op == Py_EQ)
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	352 res = Py_True;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	353 else
39650 69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	354 res = Py_False;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	355 goto done;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	356
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	357 unequal:
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	358 if (eq < 0)
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	359 return NULL;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	360 if (op == Py_NE)
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	361 res = Py_True;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	362 else
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	363 res = Py_False;
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	364
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	365 done:
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	366 Py_INCREF(res);
69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	367 return res;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	368 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	369
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	370 static long
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	371 code_hash(PyCodeObject *co)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	372 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	373 long h, h0, h1, h2, h3, h4, h5, h6;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	374 h0 = PyObject_Hash(co->co_name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	375 if (h0 == -1) return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	376 h1 = PyObject_Hash(co->co_code);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	377 if (h1 == -1) return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	378 h2 = PyObject_Hash(co->co_consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	379 if (h2 == -1) return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	380 h3 = PyObject_Hash(co->co_names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	381 if (h3 == -1) return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	382 h4 = PyObject_Hash(co->co_varnames);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	383 if (h4 == -1) return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	384 h5 = PyObject_Hash(co->co_freevars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	385 if (h5 == -1) return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	386 h6 = PyObject_Hash(co->co_cellvars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	387 if (h6 == -1) return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	388 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	389 co->co_argcount ^ co->co_kwonlyargcount ^
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation. Guido van Rossum <guido@python.org> parents: 39658 diff changeset	390 co->co_nlocals ^ co->co_flags;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	391 if (h == -1) h = -2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	392 return h;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	393 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	394
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	395 /* XXX code objects need to participate in GC? */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	396
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	397 PyTypeObject PyCode_Type = {
42334 e70cdce0e8b2 Merged revisions 56467-56482 via svnmerge from Martin v. Löwis <martin@v.loewis.de> parents: 42013 diff changeset	398 PyVarObject_HEAD_INIT(&PyType_Type, 0)
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	399 "code",
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	400 sizeof(PyCodeObject),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	401 0,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	402 (destructor)code_dealloc, /* tp_dealloc */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	403 0, /* tp_print */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	404 0, /* tp_getattr */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	405 0, /* tp_setattr */
39644 13d5e5f0e993 Restructure comparison dramatically. There is no longer a default Guido van Rossum <guido@python.org> parents: 39442 diff changeset	406 0, /* tp_compare */
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	407 (reprfunc)code_repr, /* tp_repr */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	408 0, /* tp_as_number */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	409 0, /* tp_as_sequence */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	410 0, /* tp_as_mapping */
39650 69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	411 (hashfunc)code_hash, /* tp_hash */
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	412 0, /* tp_call */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	413 0, /* tp_str */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	414 PyObject_GenericGetAttr, /* tp_getattro */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	415 0, /* tp_setattro */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	416 0, /* tp_as_buffer */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	417 Py_TPFLAGS_DEFAULT, /* tp_flags */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	418 code_doc, /* tp_doc */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	419 0, /* tp_traverse */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	420 0, /* tp_clear */
39650 69f61f90c4fc Implement == and != comparisons for code objects by value. Guido van Rossum <guido@python.org> parents: 39644 diff changeset	421 code_richcompare, /* tp_richcompare */
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	422 0, /* tp_weaklistoffset */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	423 0, /* tp_iter */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	424 0, /* tp_iternext */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	425 0, /* tp_methods */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	426 code_memberlist, /* tp_members */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	427 0, /* tp_getset */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	428 0, /* tp_base */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	429 0, /* tp_dict */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	430 0, /* tp_descr_get */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	431 0, /* tp_descr_set */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	432 0, /* tp_dictoffset */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	433 0, /* tp_init */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	434 0, /* tp_alloc */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	435 code_new, /* tp_new */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	436 };
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	437
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	438 /* All about c_lnotab.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	439
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	440 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	441 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	442 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	443 The array is conceptually a list of
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	444 (bytecode offset increment, line number increment)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	445 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	446
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	447 byte code offset source code line number
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	448 0 1
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	449 6 2
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	450 50 7
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	451 350 307
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	452 361 308
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 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	455 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	456
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	457 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	458
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	459 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	460 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	461 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	462 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	463 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	464 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	465 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	466 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	467
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	468 lineno = addr = 0
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	469 for addr_incr, line_incr in c_lnotab:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	470 addr += addr_incr
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	471 if addr > A:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	472 return lineno
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	473 lineno += line_incr
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	474
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	475 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	476 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	477 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	478 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	479 255, 0, 45, 255, 0, 45.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	480 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	481
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	482 int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	483 PyCode_Addr2Line(PyCodeObject *co, int addrq)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	484 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	485 int size = PyString_Size(co->co_lnotab) / 2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	486 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	487 int line = co->co_firstlineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	488 int addr = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	489 while (--size >= 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	490 addr += *p++;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	491 if (addr > addrq)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	492 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	493 line += *p++;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	494 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	495 return line;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	496 }
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	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 /*
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 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	500
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 */
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 /* 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	504
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 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	506 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	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 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	509 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	510
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 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	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 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	514
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 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	516 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	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 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	519 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	520
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 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	522
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 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	524 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	525 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	526 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	527 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	528
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 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	530
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 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	532 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	533 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	534
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 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	536 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	537 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	538 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	539 >> 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	540
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 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	542 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	543 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	544 >> 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	545 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	546
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 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	548 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	549 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	550 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	551 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	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 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	554 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	555 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	556 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	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 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	559 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	560 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	561 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	562
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 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	564 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	565 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	566 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	567 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	568 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	569 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	570 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	571 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	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
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
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 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	576 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	577 {
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 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	579 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	580
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 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	582 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	583
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 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	585 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	586 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	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 /* 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	589 (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	590 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	591 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	592
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 /* 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	594 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	595 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	596 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	597 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	598
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	599 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	600 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	601 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	602 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	603 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	604 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	605 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	606 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	607 --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	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
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 /* 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	611 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	612 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	613 */
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 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	615 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	616
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 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	618 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	619 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	620 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	621 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	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 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	624 }
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 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	626 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	627 }
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	628
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 36501 diff changeset	629 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	630 }

Mercurial > cpython-lru_cache-weakref

annotate Objects/codeobject.c @ 42802:01ee6311ba46