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Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from 

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r73376 | benjamin.peterson | 2009-06-11 17:29:23 -0500 (Thu, 11 Jun 2009) | 1 line

  remove check for case handled in sub-function
........
  r73393 | alexandre.vassalotti | 2009-06-12 13:56:57 -0500 (Fri, 12 Jun 2009) | 2 lines

  Clear reference to the static PyExc_RecursionErrorInst in _PyExc_Fini.
........
  r73398 | alexandre.vassalotti | 2009-06-12 15:57:12 -0500 (Fri, 12 Jun 2009) | 3 lines

  Add const qualifier to PyErr_SetFromErrnoWithFilename and to
  PyErr_SetFromErrnoWithUnicodeFilename.
........
  r73400 | alexandre.vassalotti | 2009-06-12 16:43:47 -0500 (Fri, 12 Jun 2009) | 2 lines

  Delete outdated make file for building the parser with MSVC 6.
........
  r73404 | benjamin.peterson | 2009-06-12 20:40:00 -0500 (Fri, 12 Jun 2009) | 1 line

  keep the slice.step field as NULL if no step expression is given
........
  r73405 | benjamin.peterson | 2009-06-12 22:46:30 -0500 (Fri, 12 Jun 2009) | 1 line

  prevent import statements from assigning to None
........
  r73409 | benjamin.peterson | 2009-06-13 08:06:21 -0500 (Sat, 13 Jun 2009) | 1 line

  allow importing from a module named None if it has an 'as' clause
........
  r73419 | benjamin.peterson | 2009-06-13 11:19:19 -0500 (Sat, 13 Jun 2009) | 1 line

  set Print.values to NULL if there are no values
........
  r73420 | benjamin.peterson | 2009-06-13 12:08:53 -0500 (Sat, 13 Jun 2009) | 1 line

  give a better error message when deleting ()
........
  r73421 | benjamin.peterson | 2009-06-13 15:23:33 -0500 (Sat, 13 Jun 2009) | 1 line

  when no module is given in a 'from' relative import, make ImportFrom.module NULL
........
  r73432 | amaury.forgeotdarc | 2009-06-14 16:20:40 -0500 (Sun, 14 Jun 2009) | 3 lines

  #6227: Because of a wrong indentation, the test was not testing what it should.
  Ensure that the snippet in doctest_aliases actually contains aliases.
........
  r73457 | benjamin.peterson | 2009-06-16 18:13:09 -0500 (Tue, 16 Jun 2009) | 1 line

  add underscores
........
  r73460 | benjamin.peterson | 2009-06-16 22:23:04 -0500 (Tue, 16 Jun 2009) | 1 line

  remove unused 'encoding' member from the compiler struct
........
  r73485 | benjamin.peterson | 2009-06-19 17:07:47 -0500 (Fri, 19 Jun 2009) | 1 line

  remove duplicate test
........
  r73486 | benjamin.peterson | 2009-06-19 17:09:17 -0500 (Fri, 19 Jun 2009) | 1 line

  add missing assertion #6313
........
  r73488 | benjamin.peterson | 2009-06-19 17:16:28 -0500 (Fri, 19 Jun 2009) | 1 line

  show that this one isn't used
........
  r73489 | benjamin.peterson | 2009-06-19 17:21:12 -0500 (Fri, 19 Jun 2009) | 1 line

  use closures
........
  r73501 | benjamin.peterson | 2009-06-21 18:01:07 -0500 (Sun, 21 Jun 2009) | 1 line

  don't need to add the name 'lambda' as assigned
........
  r73502 | benjamin.peterson | 2009-06-21 18:03:36 -0500 (Sun, 21 Jun 2009) | 1 line

  remove tmpname support since it's no longer used
........
  r73513 | benjamin.peterson | 2009-06-22 20:18:57 -0500 (Mon, 22 Jun 2009) | 1 line

  fix grammar
........
  r73514 | benjamin.peterson | 2009-06-22 22:01:56 -0500 (Mon, 22 Jun 2009) | 1 line

  remove some unused symtable constants
........
This commit is contained in:
Benjamin Peterson 2009-06-28 19:19:51 +00:00
parent c609b6b04b
commit 78565b2216
20 changed files with 113 additions and 150 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
Include/pyerrors.h
View File

@ -176,7 +176,8 @@ PyAPI_FUNC(PyObject *) PyErr_NoMemory(void);
PyAPI_FUNC(PyObject *) PyErr_SetFromErrno(PyObject *);
PyAPI_FUNC(PyObject *) PyErr_SetFromErrnoWithFilenameObject(
PyObject *, PyObject *);
PyAPI_FUNC(PyObject *) PyErr_SetFromErrnoWithFilename(PyObject *, const char *);
PyAPI_FUNC(PyObject *) PyErr_SetFromErrnoWithFilename(
PyObject *, const char *);
#ifdef MS_WINDOWS
PyAPI_FUNC(PyObject *) PyErr_SetFromErrnoWithUnicodeFilename(
PyObject *, const Py_UNICODE *);

10
Include/symtable.h
View File

@ -70,13 +70,9 @@ PyAPI_FUNC(void) PySymtable_Free(struct symtable *);
#define DEF_PARAM 2<<1 /* formal parameter */
#define DEF_NONLOCAL 2<<2 /* nonlocal stmt */
#define USE 2<<3 /* name is used */
#define DEF_STAR 2<<4 /* parameter is star arg */
#define DEF_DOUBLESTAR 2<<5 /* parameter is star-star arg */
#define DEF_INTUPLE 2<<6 /* name defined in tuple in parameters */
#define DEF_FREE 2<<7 /* name used but not defined in nested block */
#define DEF_FREE_GLOBAL 2<<8 /* free variable is actually implicit global */
#define DEF_FREE_CLASS 2<<9 /* free variable from class's method */
#define DEF_IMPORT 2<<10 /* assignment occurred via import */
#define DEF_FREE 2<<4 /* name used but not defined in nested block */
#define DEF_FREE_CLASS 2<<5 /* free variable from class's method */
#define DEF_IMPORT 2<<6 /* assignment occurred via import */
#define DEF_BOUND (DEF_LOCAL | DEF_PARAM | DEF_IMPORT)

9
Lib/symtable.py
View File

@ -2,9 +2,8 @@
import _symtable
from _symtable import (USE, DEF_GLOBAL, DEF_LOCAL, DEF_PARAM,
DEF_FREE_GLOBAL, DEF_FREE_CLASS, DEF_IMPORT, DEF_BOUND,
OPT_IMPORT_STAR, SCOPE_OFF, SCOPE_MASK, FREE,
GLOBAL_IMPLICIT, GLOBAL_EXPLICIT)
DEF_IMPORT, DEF_BOUND, OPT_IMPORT_STAR, SCOPE_OFF, SCOPE_MASK, FREE,
LOCAL, GLOBAL_IMPLICIT, GLOBAL_EXPLICIT)
import weakref
@ -138,7 +137,9 @@ class Function(SymbolTable):
def get_locals(self):
if self.__locals is None:
self.__locals = self.__idents_matching(lambda x:x & DEF_BOUND)
test = lambda x: (((x >> SCOPE_OFF) & SCOPE_MASK) == LOCAL or
(x & DEF_BOUND and not x & DEF_GLOBAL))
self.__locals = self.__idents_matching(test)
return self.__locals
def get_globals(self):

2
Lib/test/doctest_aliases.py
View File

@ -10,4 +10,4 @@ class TwoNames:
'''
return 'f'
g = f # define an alias for f
g = f # define an alias for f

10
Lib/test/test_ast.py
View File

@ -140,6 +140,16 @@ class AST_Tests(unittest.TestCase):
self.assertEquals(to_tuple(ast_tree), o)
self._assert_order(ast_tree, (0, 0))
def test_slice(self):
slc = ast.parse("x[::]").body[0].value.slice
self.assertIsNone(slc.upper)
self.assertIsNone(slc.lower)
self.assertIsNone(slc.step)
def test_from_import(self):
im = ast.parse("from . import y").body[0]
self.assertIsNone(im.module)
def test_nodeclasses(self):
x = ast.BinOp(1, 2, 3, lineno=0)
self.assertEquals(x.left, 1)

4
Lib/test/test_compile.py
View File

@ -213,6 +213,10 @@ if 1:
'(a, None) = 0, 0',
'for None in range(10): pass',
'def f(None): pass',
'import None',
'import x as None',
'from x import None',
'from x import y as None'
]
for stmt in stmts:
stmt += "\n"

2
Lib/test/test_doctest.py
View File

@ -498,6 +498,8 @@ If a single object is listed twice (under different names), then tests
will only be generated for it once:
>>> from test import doctest_aliases
>>> assert doctest_aliases.TwoNames.f
>>> assert doctest_aliases.TwoNames.g
>>> tests = excl_empty_finder.find(doctest_aliases)
>>> print(len(tests))
2

8
Lib/test/test_generators.py
View File

@ -960,11 +960,11 @@ Lambdas shouldn't have their usual return behavior.
# iterators have side-effects, so that which values *can* be generated at
# each slot depend on the values iterated at previous slots.
def conjoin(gs):
def simple_conjoin(gs):
values = [None] * len(gs)
def gen(i, values=values):
def gen(i):
if i >= len(gs):
yield values
else:
@ -989,7 +989,7 @@ def conjoin(gs):
# Do one loop nest at time recursively, until the # of loop nests
# remaining is divisible by 3.
def gen(i, values=values):
def gen(i):
if i >= n:
yield values
@ -1007,7 +1007,7 @@ def conjoin(gs):
# remain. Don't call directly: this is an internal optimization for
# gen's use.
def _gen3(i, values=values):
def _gen3(i):
assert i < n and (n-i) % 3 == 0
ip1, ip2, ip3 = i+1, i+2, i+3
g, g1, g2 = gs[i : ip3]

2
Lib/test/test_symtable.py
View File

@ -82,7 +82,7 @@ class SymtableTest(unittest.TestCase):
func = self.spam
self.assertEqual(func.get_parameters(), ("a", "b", "kw", "var"))
self.assertEqual(func.get_locals(),
("a", "b", "bar", "glob", "internal", "kw", "var", "x"))
("a", "b", "internal", "kw", "var", "x"))
self.assertEqual(func.get_globals(), ("bar", "glob"))
self.assertEqual(self.internal.get_frees(), ("x",))

6
Lib/test/test_syntax.py
View File

@ -476,6 +476,12 @@ Traceback (most recent call last):
...
SyntaxError: keyword argument repeated
>>> del ()
Traceback (most recent call last):
...
File "<doctest test.test_syntax[50]>", line 1
SyntaxError: can't delete ()
"""
import re

10
Lib/test/test_with.py
View File

@ -285,15 +285,6 @@ class NestedNonexceptionalTestCase(unittest.TestCase,
with Nested(mock_contextmanager_generator()):
pass
def testSingleArgUnbound(self):
mock_contextmanager = mock_contextmanager_generator()
mock_nested = MockNested(mock_contextmanager)
with mock_nested:
self.assertInWithManagerInvariants(mock_contextmanager)
self.assertInWithManagerInvariants(mock_nested)
self.assertAfterWithManagerInvariantsNoError(mock_contextmanager)
self.assertAfterWithManagerInvariantsNoError(mock_nested)
def testSingleArgBoundToNonTuple(self):
m = mock_contextmanager_generator()
# This will bind all the arguments to nested() into a single list
@ -721,6 +712,7 @@ class NestedWith(unittest.TestCase):
body_executed = True
self.assertTrue(a.enter_called)
self.assertTrue(a.exit_called)
self.assertTrue(body_executed)
self.assertNotEqual(a.exc_info[0], None)
def testEnterReturnsTuple(self):

4
Modules/symtablemodule.c
View File

@ -71,11 +71,7 @@ PyInit__symtable(void)
PyModule_AddIntConstant(m, "DEF_GLOBAL", DEF_GLOBAL);
PyModule_AddIntConstant(m, "DEF_LOCAL", DEF_LOCAL);
PyModule_AddIntConstant(m, "DEF_PARAM", DEF_PARAM);
PyModule_AddIntConstant(m, "DEF_STAR", DEF_STAR);
PyModule_AddIntConstant(m, "DEF_DOUBLESTAR", DEF_DOUBLESTAR);
PyModule_AddIntConstant(m, "DEF_INTUPLE", DEF_INTUPLE);
PyModule_AddIntConstant(m, "DEF_FREE", DEF_FREE);
PyModule_AddIntConstant(m, "DEF_FREE_GLOBAL", DEF_FREE_GLOBAL);
PyModule_AddIntConstant(m, "DEF_FREE_CLASS", DEF_FREE_CLASS);
PyModule_AddIntConstant(m, "DEF_IMPORT", DEF_IMPORT);
PyModule_AddIntConstant(m, "DEF_BOUND", DEF_BOUND);

4
Objects/exceptions.c
View File

@ -1979,6 +1979,6 @@ _PyExc_Init(void)
void
_PyExc_Fini(void)
{
Py_XDECREF(PyExc_MemoryErrorInst);
PyExc_MemoryErrorInst = NULL;
Py_CLEAR(PyExc_MemoryErrorInst);
Py_CLEAR(PyExc_RecursionErrorInst);
}

4
Objects/floatobject.c
View File

@ -73,7 +73,7 @@ PyFloat_GetMin(void)
static PyTypeObject FloatInfoType;
PyDoc_STRVAR(floatinfo__doc__,
"sys.floatinfo\n\
"sys.float_info\n\
\n\
A structseq holding information about the float type. It contains low level\n\
information about the precision and internal representation. Please study\n\
@ -100,7 +100,7 @@ static PyStructSequence_Field floatinfo_fields[] = {
};
static PyStructSequence_Desc floatinfo_desc = {
"sys.floatinfo", /* name */
"sys.float_info", /* name */
floatinfo__doc__, /* doc */
floatinfo_fields, /* fields */
11

2
Parser/Python.asdl
View File

@ -36,7 +36,7 @@ module Python version "$Revision$"
| Assert(expr test, expr? msg)
| Import(alias* names)
| ImportFrom(identifier module, alias* names, int? level)
| ImportFrom(identifier? module, alias* names, int? level)
| Global(identifier* names)
| Nonlocal(identifier* names)

45
Parser/grammar.mak
View File

@ -1,45 +0,0 @@
# This manages to rebuild graminit.{h, c} under MSVC 6 (Windows), via
#
# nmake /f grammar.mak
#
# You may also need to copy python23.dll into this directory, or get
# it on your search path.
#
# The intermediate files can be nuked afterwards:
#
# nmake /f grammar.mak clean
#
# I don't understand the maze of preprocessor #define's on Windows, and
# as a result this requires linking with python23.lib, so it's of no use
# for bootstrapping (the cause appears to be a useless-- in this
# particular case --pragma in PC\pyconfig.h, which demands that
# python23.lib get linked in).
LIBS= ..\PCbuild\python25.lib
CFLAGS= /I ..\Include /I ..\PC /D MS_NO_COREDLL /D PGEN /MD
GRAMMAR_H= ..\Include\graminit.h
GRAMMAR_C= ..\Python\graminit.c
GRAMMAR_INPUT= ..\Grammar\Grammar
PGEN= pgen.exe
POBJS= acceler.obj grammar1.obj listnode.obj node.obj parser.obj \
parsetok.obj tokenizer.obj bitset.obj metagrammar.obj
PARSER_OBJS= $(POBJS) myreadline.obj
PGOBJS= firstsets.obj grammar.obj pgen.obj printgrammar.obj pgenmain.obj
PGENOBJS= $(POBJS) $(PGOBJS)
$(GRAMMAR_H) $(GRAMMAR_C): $(PGEN) $(GRAMMAR_INPUT)
$(PGEN) $(GRAMMAR_INPUT) $(GRAMMAR_H) $(GRAMMAR_C)
$(PGEN): $(PGENOBJS)
$(CC) $(PGENOBJS) $(LIBS) /Fe$(PGEN)
clean:
del *.obj
del $(PGEN)

8
Python/Python-ast.c
View File

@ -1332,11 +1332,6 @@ ImportFrom(identifier module, asdl_seq * names, int level, int lineno, int
col_offset, PyArena *arena)
{
stmt_ty p;
if (!module) {
PyErr_SetString(PyExc_ValueError,
"field module is required for ImportFrom");
return NULL;
}
p = (stmt_ty)PyArena_Malloc(arena, sizeof(*p));
if (!p)
return NULL;
@ -4465,8 +4460,7 @@ obj2ast_stmt(PyObject* obj, stmt_ty* out, PyArena* arena)
Py_XDECREF(tmp);
tmp = NULL;
} else {
PyErr_SetString(PyExc_TypeError, "required field \"module\" missing from ImportFrom");
return 1;
module = NULL;
}
if (PyObject_HasAttrString(obj, "names")) {
int res;

86
Python/ast.c
View File

@ -362,12 +362,12 @@ static const char* FORBIDDEN[] = {
};
static int
forbidden_name(expr_ty e, const node *n)
forbidden_name(identifier name, const node *n)
{
const char **p;
assert(PyUnicode_Check(e->v.Name.id));
assert(PyUnicode_Check(name));
for (p = FORBIDDEN; *p; p++) {
if (PyUnicode_CompareWithASCIIString(e->v.Name.id, *p) == 0) {
if (PyUnicode_CompareWithASCIIString(name, *p) == 0) {
ast_error(n, "assignment to keyword");
return 1;
}
@ -414,7 +414,7 @@ set_context(struct compiling *c, expr_ty e, expr_context_ty ctx, const node *n)
break;
case Name_kind:
if (ctx == Store) {
if (forbidden_name(e, n))
if (forbidden_name(e->v.Name.id, n))
return 0; /* forbidden_name() calls ast_error() */
}
e->v.Name.ctx = ctx;
@ -424,10 +424,13 @@ set_context(struct compiling *c, expr_ty e, expr_context_ty ctx, const node *n)
s = e->v.List.elts;
break;
case Tuple_kind:
if (asdl_seq_LEN(e->v.Tuple.elts) == 0)
return ast_error(n, "can't assign to ()");
e->v.Tuple.ctx = ctx;
s = e->v.Tuple.elts;
if (asdl_seq_LEN(e->v.Tuple.elts)) {
e->v.Tuple.ctx = ctx;
s = e->v.Tuple.elts;
}
else {
expr_name = "()";
}
break;
case Lambda_kind:
expr_name = "lambda";
@ -1378,7 +1381,7 @@ ast_for_atom(struct compiling *c, const node *n)
/* testlist_comp: test ( comp_for | (',' test)* [','] ) */
if ((NCH(ch) > 1) && (TYPE(CHILD(ch, 1)) == comp_for))
return ast_for_genexp(c, ch);
return ast_for_testlist(c, ch);
case LSQB: /* list (or list comprehension) */
ch = CHILD(n, 1);
@ -1513,14 +1516,7 @@ ast_for_slice(struct compiling *c, const node *n)
ch = CHILD(n, NCH(n) - 1);
if (TYPE(ch) == sliceop) {
if (NCH(ch) == 1) {
/* No expression, so step is None */
ch = CHILD(ch, 0);
step = Name(new_identifier("None", c->c_arena), Load,
LINENO(ch), ch->n_col_offset, c->c_arena);
if (!step)
return NULL;
} else {
if (NCH(ch) != 1) {
ch = CHILD(ch, 1);
if (TYPE(ch) == test) {
step = ast_for_expr(c, ch);
@ -2014,7 +2010,7 @@ ast_for_call(struct compiling *c, const node *n, expr_ty func)
} else if (e->kind != Name_kind) {
ast_error(CHILD(ch, 0), "keyword can't be an expression");
return NULL;
} else if (forbidden_name(e, ch)) {
} else if (forbidden_name(e->v.Name.id, ch)) {
return NULL;
}
key = e->v.Name.id;
@ -2160,6 +2156,7 @@ ast_for_expr_stmt(struct compiling *c, const node *n)
}
}
static asdl_seq *
ast_for_exprlist(struct compiling *c, const node *n, expr_context_ty context)
{
@ -2260,49 +2257,64 @@ ast_for_flow_stmt(struct compiling *c, const node *n)
}
static alias_ty
alias_for_import_name(struct compiling *c, const node *n)
alias_for_import_name(struct compiling *c, const node *n, int store)
{
/*
import_as_name: NAME ['as' NAME]
dotted_as_name: dotted_name ['as' NAME]
dotted_name: NAME ('.' NAME)*
*/
PyObject *str, *name;
identifier str, name;
loop:
switch (TYPE(n)) {
case import_as_name:
case import_as_name: {
node *name_node = CHILD(n, 0);
str = NULL;
if (NCH(n) == 3) {
str = NEW_IDENTIFIER(CHILD(n, 2));
if (!str)
return NULL;
}
name = NEW_IDENTIFIER(CHILD(n, 0));
name = NEW_IDENTIFIER(name_node);
if (!name)
return NULL;
if (NCH(n) == 3) {
node *str_node = CHILD(n, 2);
str = NEW_IDENTIFIER(str_node);
if (!str)
return NULL;
if (store && forbidden_name(str, str_node))
return NULL;
}
else {
if (forbidden_name(name, name_node))
return NULL;
}
return alias(name, str, c->c_arena);
}
case dotted_as_name:
if (NCH(n) == 1) {
n = CHILD(n, 0);
goto loop;
}
else {
alias_ty a = alias_for_import_name(c, CHILD(n, 0));
node *asname_node = CHILD(n, 2);
alias_ty a = alias_for_import_name(c, CHILD(n, 0), 0);
if (!a)
return NULL;
assert(!a->asname);
a->asname = NEW_IDENTIFIER(CHILD(n, 2));
a->asname = NEW_IDENTIFIER(asname_node);
if (!a->asname)
return NULL;
if (forbidden_name(a->asname, asname_node))
return NULL;
return a;
}
break;
case dotted_name:
if (NCH(n) == 1) {
name = NEW_IDENTIFIER(CHILD(n, 0));
node *name_node = CHILD(n, 0);
name = NEW_IDENTIFIER(name_node);
if (!name)
return NULL;
if (store && forbidden_name(name, name_node))
return NULL;
return alias(name, NULL, c->c_arena);
}
else {
@ -2382,7 +2394,7 @@ ast_for_import_stmt(struct compiling *c, const node *n)
if (!aliases)
return NULL;
for (i = 0; i < NCH(n); i += 2) {
alias_ty import_alias = alias_for_import_name(c, CHILD(n, i));
alias_ty import_alias = alias_for_import_name(c, CHILD(n, i), 1);
if (!import_alias)
return NULL;
asdl_seq_SET(aliases, i / 2, import_alias);
@ -2393,13 +2405,15 @@ ast_for_import_stmt(struct compiling *c, const node *n)
int n_children;
int idx, ndots = 0;
alias_ty mod = NULL;
identifier modname;
identifier modname = NULL;
/* Count the number of dots (for relative imports) and check for the
optional module name */
for (idx = 1; idx < NCH(n); idx++) {
if (TYPE(CHILD(n, idx)) == dotted_name) {
mod = alias_for_import_name(c, CHILD(n, idx));
mod = alias_for_import_name(c, CHILD(n, idx), 0);
if (!mod)
return NULL;
idx++;
break;
} else if (TYPE(CHILD(n, idx)) == ELLIPSIS) {
@ -2444,14 +2458,14 @@ ast_for_import_stmt(struct compiling *c, const node *n)
/* handle "from ... import *" special b/c there's no children */
if (TYPE(n) == STAR) {
alias_ty import_alias = alias_for_import_name(c, n);
alias_ty import_alias = alias_for_import_name(c, n, 1);
if (!import_alias)
return NULL;
asdl_seq_SET(aliases, 0, import_alias);
}
else {
for (i = 0; i < NCH(n); i += 2) {
alias_ty import_alias = alias_for_import_name(c, CHILD(n, i));
alias_ty import_alias = alias_for_import_name(c, CHILD(n, i), 1);
if (!import_alias)
return NULL;
asdl_seq_SET(aliases, i / 2, import_alias);
@ -2459,8 +2473,6 @@ ast_for_import_stmt(struct compiling *c, const node *n)
}
if (mod != NULL)
modname = mod->name;
else
modname = new_identifier("", c->c_arena);
return ImportFrom(modname, aliases, ndots, lineno, col_offset,
c->c_arena);
}

34
Python/compile.c
View File

@ -117,7 +117,6 @@ struct compiler_unit {
members, you can reach all early allocated blocks. */
basicblock *u_blocks;
basicblock *u_curblock; /* pointer to current block */
int u_tmpname; /* temporary variables for list comps */
int u_nfblocks;
struct fblockinfo u_fblock[CO_MAXBLOCKS];
@ -146,7 +145,6 @@ struct compiler {
struct compiler_unit *u; /* compiler state for current block */
PyObject *c_stack; /* Python list holding compiler_unit ptrs */
char *c_encoding; /* source encoding (a borrowed reference) */
PyArena *c_arena; /* pointer to memory allocation arena */
};
@ -295,9 +293,6 @@ PyAST_Compile(mod_ty mod, const char *filename, PyCompilerFlags *flags,
goto finally;
}
/* XXX initialize to NULL for now, need to handle */
c.c_encoding = NULL;
co = compiler_mod(&c, mod);
finally:
@ -488,7 +483,6 @@ compiler_enter_scope(struct compiler *c, identifier name, void *key,
}
u->u_blocks = NULL;
u->u_tmpname = 0;
u->u_nfblocks = 0;
u->u_firstlineno = lineno;
u->u_lineno = 0;
@ -2154,6 +2148,13 @@ compiler_from_import(struct compiler *c, stmt_ty s)
PyObject *names = PyTuple_New(n);
PyObject *level;
static PyObject *empty_string;
if (!empty_string) {
empty_string = PyUnicode_FromString("");
if (!empty_string)
return 0;
}
if (!names)
return 0;
@ -2171,23 +2172,24 @@ compiler_from_import(struct compiler *c, stmt_ty s)
PyTuple_SET_ITEM(names, i, alias->name);
}
if (s->lineno > c->c_future->ff_lineno) {
if (!PyUnicode_CompareWithASCIIString(s->v.ImportFrom.module,
"__future__")) {
Py_DECREF(level);
Py_DECREF(names);
return compiler_error(c,
"from __future__ imports must occur "
if (s->lineno > c->c_future->ff_lineno && s->v.ImportFrom.module &&
!PyUnicode_CompareWithASCIIString(s->v.ImportFrom.module, "__future__")) {
Py_DECREF(level);
Py_DECREF(names);
return compiler_error(c, "from __future__ imports must occur "
"at the beginning of the file");
}
}
ADDOP_O(c, LOAD_CONST, level, consts);
Py_DECREF(level);
ADDOP_O(c, LOAD_CONST, names, consts);
Py_DECREF(names);
ADDOP_NAME(c, IMPORT_NAME, s->v.ImportFrom.module, names);
if (s->v.ImportFrom.module) {
ADDOP_NAME(c, IMPORT_NAME, s->v.ImportFrom.module, names);
}
else {
ADDOP_NAME(c, IMPORT_NAME, empty_string, names);
}
for (i = 0; i < n; i++) {
alias_ty alias = (alias_ty)asdl_seq_GET(s->v.ImportFrom.names, i);
identifier store_name;

10
Python/symtable.c
View File

@ -38,7 +38,6 @@ ste_new(struct symtable *st, identifier name, _Py_block_ty block,
goto fail;
ste->ste_table = st;
ste->ste_id = k;
ste->ste_tmpname = 0;
ste->ste_name = name;
Py_INCREF(name);
@ -66,7 +65,6 @@ ste_new(struct symtable *st, identifier name, _Py_block_ty block,
ste->ste_varargs = 0;
ste->ste_varkeywords = 0;
ste->ste_opt_lineno = 0;
ste->ste_tmpname = 0;
ste->ste_lineno = lineno;
if (st->st_cur != NULL &&
@ -1099,7 +1097,6 @@ symtable_new_tmpname(struct symtable *st)
}
static int
symtable_visit_stmt(struct symtable *st, stmt_ty s)
{
@ -1297,12 +1294,8 @@ symtable_visit_stmt(struct symtable *st, stmt_ty s)
/* nothing to do here */
break;
case With_kind:
if (!symtable_new_tmpname(st))
return 0;
VISIT(st, expr, s->v.With.context_expr);
if (s->v.With.optional_vars) {
if (!symtable_new_tmpname(st))
return 0;
VISIT(st, expr, s->v.With.optional_vars);
}
VISIT_SEQ(st, stmt, s->v.With.body);
@ -1326,8 +1319,7 @@ symtable_visit_expr(struct symtable *st, expr_ty e)
VISIT(st, expr, e->v.UnaryOp.operand);
break;
case Lambda_kind: {
if (!GET_IDENTIFIER(lambda) ||
!symtable_add_def(st, lambda, DEF_LOCAL))
if (!GET_IDENTIFIER(lambda))
return 0;
if (e->v.Lambda.args->defaults)
VISIT_SEQ(st, expr, e->v.Lambda.args->defaults);