cpython/Parser/asdl_c.py

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#! /usr/bin/env python
"""Generate C code from an ASDL description."""
import os
import sys
import textwrap
from argparse import ArgumentParser
from pathlib import Path
import asdl
TABSIZE = 4
MAX_COL = 80
AUTOGEN_MESSAGE = "// File automatically generated by {}.\n\n"
def get_c_type(name):
"""Return a string for the C name of the type.
This function special cases the default types provided by asdl.
"""
if name in asdl.builtin_types:
return name
else:
return "%s_ty" % name
def reflow_lines(s, depth):
"""Reflow the line s indented depth tabs.
Return a sequence of lines where no line extends beyond MAX_COL
when properly indented. The first line is properly indented based
exclusively on depth * TABSIZE. All following lines -- these are
the reflowed lines generated by this function -- start at the same
column as the first character beyond the opening { in the first
line.
"""
size = MAX_COL - depth * TABSIZE
if len(s) < size:
return [s]
lines = []
cur = s
padding = ""
while len(cur) > size:
i = cur.rfind(' ', 0, size)
# XXX this should be fixed for real
if i == -1 and 'GeneratorExp' in cur:
i = size + 3
assert i != -1, "Impossible line %d to reflow: %r" % (size, s)
lines.append(padding + cur[:i])
if len(lines) == 1:
# find new size based on brace
j = cur.find('{', 0, i)
if j >= 0:
j += 2 # account for the brace and the space after it
size -= j
padding = " " * j
else:
j = cur.find('(', 0, i)
if j >= 0:
j += 1 # account for the paren (no space after it)
size -= j
padding = " " * j
cur = cur[i+1:]
else:
lines.append(padding + cur)
return lines
def reflow_c_string(s, depth):
return '"%s"' % s.replace('\n', '\\n"\n%s"' % (' ' * depth * TABSIZE))
def is_simple(sum):
"""Return True if a sum is a simple.
A sum is simple if its types have no fields, e.g.
unaryop = Invert | Not | UAdd | USub
"""
for t in sum.types:
if t.fields:
return False
return True
def asdl_of(name, obj):
if isinstance(obj, asdl.Product) or isinstance(obj, asdl.Constructor):
fields = ", ".join(map(str, obj.fields))
if fields:
fields = "({})".format(fields)
return "{}{}".format(name, fields)
else:
if is_simple(obj):
types = " | ".join(type.name for type in obj.types)
else:
sep = "\n{}| ".format(" " * (len(name) + 1))
types = sep.join(
asdl_of(type.name, type) for type in obj.types
)
return "{} = {}".format(name, types)
class EmitVisitor(asdl.VisitorBase):
"""Visit that emits lines"""
def __init__(self, file):
self.file = file
self.identifiers = set()
self.singletons = set()
self.types = set()
super(EmitVisitor, self).__init__()
def emit_identifier(self, name):
self.identifiers.add(str(name))
def emit_singleton(self, name):
self.singletons.add(str(name))
def emit_type(self, name):
self.types.add(str(name))
Merged revisions 73196,73278-73280,73299,73308,73312-73313,73317-73318,73321,73324,73331,73335,73340,73363 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r73196 | benjamin.peterson | 2009-06-03 20:40:29 -0500 (Wed, 03 Jun 2009) | 1 line use the offical api ........ r73278 | benjamin.peterson | 2009-06-07 17:33:11 -0500 (Sun, 07 Jun 2009) | 1 line inherit from object ........ r73279 | benjamin.peterson | 2009-06-07 17:35:00 -0500 (Sun, 07 Jun 2009) | 1 line always inherit from an appropiate base class ........ r73280 | benjamin.peterson | 2009-06-07 17:54:35 -0500 (Sun, 07 Jun 2009) | 1 line use booleans for flags ........ r73299 | georg.brandl | 2009-06-08 13:41:36 -0500 (Mon, 08 Jun 2009) | 1 line Typo fix. ........ r73308 | benjamin.peterson | 2009-06-08 17:18:32 -0500 (Mon, 08 Jun 2009) | 1 line remove useless assertion ........ r73312 | benjamin.peterson | 2009-06-08 18:44:13 -0500 (Mon, 08 Jun 2009) | 1 line remove error checks already done in set_context() ........ r73313 | r.david.murray | 2009-06-08 19:44:22 -0500 (Mon, 08 Jun 2009) | 4 lines Issue 2947: document how return code handling translates from os.popen to subprocess. Also fixes reference link in the os.spawn documentation. ........ r73317 | benjamin.peterson | 2009-06-09 12:24:26 -0500 (Tue, 09 Jun 2009) | 1 line make ast.c depend on the grammar ........ r73318 | benjamin.peterson | 2009-06-09 12:29:51 -0500 (Tue, 09 Jun 2009) | 1 line explain why keyword names are not just NAME ........ r73321 | benjamin.peterson | 2009-06-09 16:13:43 -0500 (Tue, 09 Jun 2009) | 1 line update symbol.py from with statement changes ........ r73324 | amaury.forgeotdarc | 2009-06-09 17:53:16 -0500 (Tue, 09 Jun 2009) | 2 lines Avoid invoking the parser/compiler just to test the presence of a function. ........ r73331 | benjamin.peterson | 2009-06-10 08:45:31 -0500 (Wed, 10 Jun 2009) | 1 line fix spelling ........ r73335 | raymond.hettinger | 2009-06-10 11:15:40 -0500 (Wed, 10 Jun 2009) | 1 line Fix signed/unsigned compiler warning. ........ r73340 | amaury.forgeotdarc | 2009-06-10 15:30:19 -0500 (Wed, 10 Jun 2009) | 2 lines Fix a typo spotted by Nick Coghlan. ........ r73363 | benjamin.peterson | 2009-06-11 12:51:17 -0500 (Thu, 11 Jun 2009) | 1 line use multi-with syntax ........
2009-06-11 22:54:11 +00:00
def emit(self, s, depth, reflow=True):
# XXX reflow long lines?
if reflow:
lines = reflow_lines(s, depth)
else:
lines = [s]
for line in lines:
if line:
line = (" " * TABSIZE * depth) + line
self.file.write(line + "\n")
class TypeDefVisitor(EmitVisitor):
def visitModule(self, mod):
for dfn in mod.dfns:
self.visit(dfn)
def visitType(self, type, depth=0):
self.visit(type.value, type.name, depth)
def visitSum(self, sum, name, depth):
if is_simple(sum):
self.simple_sum(sum, name, depth)
else:
self.sum_with_constructors(sum, name, depth)
def simple_sum(self, sum, name, depth):
enum = []
for i in range(len(sum.types)):
type = sum.types[i]
enum.append("%s=%d" % (type.name, i + 1))
enums = ", ".join(enum)
ctype = get_c_type(name)
s = "typedef enum _%s { %s } %s;" % (name, enums, ctype)
self.emit(s, depth)
self.emit("", depth)
def sum_with_constructors(self, sum, name, depth):
ctype = get_c_type(name)
s = "typedef struct _%(name)s *%(ctype)s;" % locals()
self.emit(s, depth)
self.emit("", depth)
def visitProduct(self, product, name, depth):
ctype = get_c_type(name)
s = "typedef struct _%(name)s *%(ctype)s;" % locals()
self.emit(s, depth)
self.emit("", depth)
class SequenceDefVisitor(EmitVisitor):
def visitModule(self, mod):
for dfn in mod.dfns:
self.visit(dfn)
def visitType(self, type, depth=0):
self.visit(type.value, type.name, depth)
def visitSum(self, sum, name, depth):
if is_simple(sum):
return
self.emit_sequence_constructor(name, depth)
def emit_sequence_constructor(self, name,depth):
ctype = get_c_type(name)
self.emit("""\
typedef struct {
_ASDL_SEQ_HEAD
%(ctype)s typed_elements[1];
} asdl_%(name)s_seq;""" % locals(), reflow=False, depth=depth)
self.emit("", depth)
self.emit("asdl_%(name)s_seq *_Py_asdl_%(name)s_seq_new(Py_ssize_t size, PyArena *arena);" % locals(), depth)
self.emit("", depth)
def visitProduct(self, product, name, depth):
self.emit_sequence_constructor(name, depth)
class StructVisitor(EmitVisitor):
"""Visitor to generate typedefs for AST."""
def visitModule(self, mod):
for dfn in mod.dfns:
self.visit(dfn)
def visitType(self, type, depth=0):
self.visit(type.value, type.name, depth)
def visitSum(self, sum, name, depth):
if not is_simple(sum):
self.sum_with_constructors(sum, name, depth)
def sum_with_constructors(self, sum, name, depth):
def emit(s, depth=depth):
self.emit(s % sys._getframe(1).f_locals, depth)
enum = []
for i in range(len(sum.types)):
type = sum.types[i]
enum.append("%s_kind=%d" % (type.name, i + 1))
emit("enum _%(name)s_kind {" + ", ".join(enum) + "};")
emit("struct _%(name)s {")
emit("enum _%(name)s_kind kind;", depth + 1)
emit("union {", depth + 1)
for t in sum.types:
self.visit(t, depth + 2)
emit("} v;", depth + 1)
for field in sum.attributes:
# rudimentary attribute handling
type = str(field.type)
assert type in asdl.builtin_types, type
emit("%s %s;" % (type, field.name), depth + 1);
emit("};")
emit("")
def visitConstructor(self, cons, depth):
if cons.fields:
self.emit("struct {", depth)
for f in cons.fields:
self.visit(f, depth + 1)
self.emit("} %s;" % cons.name, depth)
self.emit("", depth)
def visitField(self, field, depth):
# XXX need to lookup field.type, because it might be something
# like a builtin...
ctype = get_c_type(field.type)
name = field.name
if field.seq:
if field.type == 'cmpop':
self.emit("asdl_int_seq *%(name)s;" % locals(), depth)
else:
_type = field.type
self.emit("asdl_%(_type)s_seq *%(name)s;" % locals(), depth)
else:
self.emit("%(ctype)s %(name)s;" % locals(), depth)
def visitProduct(self, product, name, depth):
self.emit("struct _%(name)s {" % locals(), depth)
for f in product.fields:
self.visit(f, depth + 1)
for field in product.attributes:
# rudimentary attribute handling
type = str(field.type)
assert type in asdl.builtin_types, type
self.emit("%s %s;" % (type, field.name), depth + 1);
self.emit("};", depth)
self.emit("", depth)
class PrototypeVisitor(EmitVisitor):
"""Generate function prototypes for the .h file"""
def visitModule(self, mod):
for dfn in mod.dfns:
self.visit(dfn)
def visitType(self, type):
self.visit(type.value, type.name)
def visitSum(self, sum, name):
if is_simple(sum):
pass # XXX
else:
for t in sum.types:
self.visit(t, name, sum.attributes)
def get_args(self, fields):
"""Return list of C argument into, one for each field.
Argument info is 3-tuple of a C type, variable name, and flag
that is true if type can be NULL.
"""
args = []
unnamed = {}
for f in fields:
if f.name is None:
name = f.type
c = unnamed[name] = unnamed.get(name, 0) + 1
if c > 1:
name = "name%d" % (c - 1)
else:
name = f.name
# XXX should extend get_c_type() to handle this
if f.seq:
if f.type == 'cmpop':
ctype = "asdl_int_seq *"
else:
ctype = f"asdl_{f.type}_seq *"
else:
ctype = get_c_type(f.type)
args.append((ctype, name, f.opt or f.seq))
return args
def visitConstructor(self, cons, type, attrs):
args = self.get_args(cons.fields)
attrs = self.get_args(attrs)
ctype = get_c_type(type)
self.emit_function(cons.name, ctype, args, attrs)
Merged revisions 73196,73278-73280,73299,73308,73312-73313,73317-73318,73321,73324,73331,73335,73340,73363 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r73196 | benjamin.peterson | 2009-06-03 20:40:29 -0500 (Wed, 03 Jun 2009) | 1 line use the offical api ........ r73278 | benjamin.peterson | 2009-06-07 17:33:11 -0500 (Sun, 07 Jun 2009) | 1 line inherit from object ........ r73279 | benjamin.peterson | 2009-06-07 17:35:00 -0500 (Sun, 07 Jun 2009) | 1 line always inherit from an appropiate base class ........ r73280 | benjamin.peterson | 2009-06-07 17:54:35 -0500 (Sun, 07 Jun 2009) | 1 line use booleans for flags ........ r73299 | georg.brandl | 2009-06-08 13:41:36 -0500 (Mon, 08 Jun 2009) | 1 line Typo fix. ........ r73308 | benjamin.peterson | 2009-06-08 17:18:32 -0500 (Mon, 08 Jun 2009) | 1 line remove useless assertion ........ r73312 | benjamin.peterson | 2009-06-08 18:44:13 -0500 (Mon, 08 Jun 2009) | 1 line remove error checks already done in set_context() ........ r73313 | r.david.murray | 2009-06-08 19:44:22 -0500 (Mon, 08 Jun 2009) | 4 lines Issue 2947: document how return code handling translates from os.popen to subprocess. Also fixes reference link in the os.spawn documentation. ........ r73317 | benjamin.peterson | 2009-06-09 12:24:26 -0500 (Tue, 09 Jun 2009) | 1 line make ast.c depend on the grammar ........ r73318 | benjamin.peterson | 2009-06-09 12:29:51 -0500 (Tue, 09 Jun 2009) | 1 line explain why keyword names are not just NAME ........ r73321 | benjamin.peterson | 2009-06-09 16:13:43 -0500 (Tue, 09 Jun 2009) | 1 line update symbol.py from with statement changes ........ r73324 | amaury.forgeotdarc | 2009-06-09 17:53:16 -0500 (Tue, 09 Jun 2009) | 2 lines Avoid invoking the parser/compiler just to test the presence of a function. ........ r73331 | benjamin.peterson | 2009-06-10 08:45:31 -0500 (Wed, 10 Jun 2009) | 1 line fix spelling ........ r73335 | raymond.hettinger | 2009-06-10 11:15:40 -0500 (Wed, 10 Jun 2009) | 1 line Fix signed/unsigned compiler warning. ........ r73340 | amaury.forgeotdarc | 2009-06-10 15:30:19 -0500 (Wed, 10 Jun 2009) | 2 lines Fix a typo spotted by Nick Coghlan. ........ r73363 | benjamin.peterson | 2009-06-11 12:51:17 -0500 (Thu, 11 Jun 2009) | 1 line use multi-with syntax ........
2009-06-11 22:54:11 +00:00
def emit_function(self, name, ctype, args, attrs, union=True):
args = args + attrs
if args:
argstr = ", ".join(["%s %s" % (atype, aname)
for atype, aname, opt in args])
argstr += ", PyArena *arena"
else:
argstr = "PyArena *arena"
Merged revisions 53451-53537 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r53454 | brett.cannon | 2007-01-15 20:12:08 +0100 (Mon, 15 Jan 2007) | 3 lines Add a note for strptime that just because strftime supports some extra directive that is not documented that strptime will as well. ........ r53458 | vinay.sajip | 2007-01-16 10:50:07 +0100 (Tue, 16 Jan 2007) | 1 line Updated rotating file handlers to use _open(). ........ r53459 | marc-andre.lemburg | 2007-01-16 14:03:06 +0100 (Tue, 16 Jan 2007) | 2 lines Add news items for the recent pybench and platform changes. ........ r53460 | sjoerd.mullender | 2007-01-16 17:42:38 +0100 (Tue, 16 Jan 2007) | 4 lines Fixed ntpath.expandvars to not replace references to non-existing variables with nothing. Also added tests. This fixes bug #494589. ........ r53464 | neal.norwitz | 2007-01-17 07:23:51 +0100 (Wed, 17 Jan 2007) | 1 line Give Calvin Spealman access for python-dev summaries. ........ r53465 | neal.norwitz | 2007-01-17 09:37:26 +0100 (Wed, 17 Jan 2007) | 1 line Remove Calvin since he only has access to the website currently. ........ r53466 | thomas.heller | 2007-01-17 10:40:34 +0100 (Wed, 17 Jan 2007) | 2 lines Replace C++ comments with C comments. ........ r53472 | andrew.kuchling | 2007-01-17 20:55:06 +0100 (Wed, 17 Jan 2007) | 1 line [Part of bug #1599254] Add suggestion to Mailbox docs to use Maildir, and warn user to lock/unlock mailboxes when modifying them ........ r53475 | georg.brandl | 2007-01-17 22:09:04 +0100 (Wed, 17 Jan 2007) | 2 lines Bug #1637967: missing //= operator in list. ........ r53477 | georg.brandl | 2007-01-17 22:19:58 +0100 (Wed, 17 Jan 2007) | 2 lines Bug #1629125: fix wrong data type (int -> Py_ssize_t) in PyDict_Next docs. ........ r53481 | neal.norwitz | 2007-01-18 06:40:58 +0100 (Thu, 18 Jan 2007) | 1 line Try reverting part of r53145 that seems to cause the Windows buildbots to fail in test_uu.UUFileTest.test_encode ........ r53482 | fred.drake | 2007-01-18 06:42:30 +0100 (Thu, 18 Jan 2007) | 1 line add missing version entry ........ r53483 | neal.norwitz | 2007-01-18 07:20:55 +0100 (Thu, 18 Jan 2007) | 7 lines This test doesn't pass on Windows. The cause seems to be that chmod doesn't support the same funcationality as on Unix. I'm not sure if this fix is the best (or if it will even work)--it's a test to see if the buildbots start passing again. It might be better to not even run this test if it's windows (or non-posix). ........ r53488 | neal.norwitz | 2007-01-19 06:53:33 +0100 (Fri, 19 Jan 2007) | 1 line SF #1635217, Fix unbalanced paren ........ r53489 | martin.v.loewis | 2007-01-19 07:42:22 +0100 (Fri, 19 Jan 2007) | 3 lines Prefix AST symbols with _Py_. Fixes #1637022. Will backport. ........ r53497 | martin.v.loewis | 2007-01-19 19:01:38 +0100 (Fri, 19 Jan 2007) | 2 lines Add UUIDs for 2.5.1 and 2.5.2 ........ r53499 | raymond.hettinger | 2007-01-19 19:07:18 +0100 (Fri, 19 Jan 2007) | 1 line SF# 1635892: Fix docs for betavariate's input parameters . ........ r53503 | martin.v.loewis | 2007-01-20 15:05:39 +0100 (Sat, 20 Jan 2007) | 2 lines Merge 53501 and 53502 from 25 branch: Add /GS- for AMD64 and Itanium builds where missing. ........ r53504 | walter.doerwald | 2007-01-20 18:28:31 +0100 (Sat, 20 Jan 2007) | 2 lines Port test_resource.py to unittest. ........ r53505 | walter.doerwald | 2007-01-20 19:19:33 +0100 (Sat, 20 Jan 2007) | 2 lines Add argument tests an calls of resource.getrusage(). ........ r53506 | walter.doerwald | 2007-01-20 20:03:17 +0100 (Sat, 20 Jan 2007) | 2 lines resource.RUSAGE_BOTH might not exist. ........ r53507 | walter.doerwald | 2007-01-21 00:07:28 +0100 (Sun, 21 Jan 2007) | 2 lines Port test_new.py to unittest. ........ r53508 | martin.v.loewis | 2007-01-21 10:33:07 +0100 (Sun, 21 Jan 2007) | 2 lines Patch #1610575: Add support for _Bool to struct. ........ r53509 | georg.brandl | 2007-01-21 11:28:43 +0100 (Sun, 21 Jan 2007) | 3 lines Bug #1486663: don't reject keyword arguments for subclasses of builtin types. ........ r53511 | georg.brandl | 2007-01-21 11:35:10 +0100 (Sun, 21 Jan 2007) | 2 lines Patch #1627441: close sockets properly in urllib2. ........ r53517 | georg.brandl | 2007-01-22 20:40:21 +0100 (Mon, 22 Jan 2007) | 3 lines Use new email module names (#1637162, #1637159, #1637157). ........ r53518 | andrew.kuchling | 2007-01-22 21:26:40 +0100 (Mon, 22 Jan 2007) | 1 line Improve pattern used for mbox 'From' lines; add a simple test ........ r53519 | andrew.kuchling | 2007-01-22 21:27:50 +0100 (Mon, 22 Jan 2007) | 1 line Make comment match the code ........ r53522 | georg.brandl | 2007-01-22 22:10:33 +0100 (Mon, 22 Jan 2007) | 2 lines Bug #1249573: fix rfc822.parsedate not accepting a certain date format ........ r53524 | georg.brandl | 2007-01-22 22:23:41 +0100 (Mon, 22 Jan 2007) | 2 lines Bug #1627316: handle error in condition/ignore pdb commands more gracefully. ........ r53526 | lars.gustaebel | 2007-01-23 12:17:33 +0100 (Tue, 23 Jan 2007) | 4 lines Patch #1507247: tarfile.py: use current umask for intermediate directories. ........ r53527 | thomas.wouters | 2007-01-23 14:42:00 +0100 (Tue, 23 Jan 2007) | 13 lines SF patch #1630975: Fix crash when replacing sys.stdout in sitecustomize When running the interpreter in an environment that would cause it to set stdout/stderr/stdin's encoding, having a sitecustomize that would replace them with something other than PyFile objects would crash the interpreter. Fix it by simply ignoring the encoding-setting for non-files. This could do with a test, but I can think of no maintainable and portable way to test this bug, short of adding a sitecustomize.py to the buildsystem and have it always run with it (hmmm....) ........ r53528 | thomas.wouters | 2007-01-23 14:50:49 +0100 (Tue, 23 Jan 2007) | 4 lines Add news entry about last checkin (oops.) ........ r53531 | martin.v.loewis | 2007-01-23 22:11:47 +0100 (Tue, 23 Jan 2007) | 4 lines Make PyTraceBack_Here use the current thread, not the frame's thread state. Fixes #1579370. Will backport. ........ r53535 | brett.cannon | 2007-01-24 00:21:22 +0100 (Wed, 24 Jan 2007) | 5 lines Fix crasher for when an object's __del__ creates a new weakref to itself. Patch only fixes new-style classes; classic classes still buggy. Closes bug #1377858. Already backported. ........ r53536 | walter.doerwald | 2007-01-24 01:42:19 +0100 (Wed, 24 Jan 2007) | 2 lines Port test_popen.py to unittest. ........
2007-02-01 18:02:27 +00:00
margs = "a0"
for i in range(1, len(args)+1):
margs += ", a%d" % i
self.emit("#define %s(%s) _Py_%s(%s)" % (name, margs, name, margs), 0,
Merged revisions 73196,73278-73280,73299,73308,73312-73313,73317-73318,73321,73324,73331,73335,73340,73363 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r73196 | benjamin.peterson | 2009-06-03 20:40:29 -0500 (Wed, 03 Jun 2009) | 1 line use the offical api ........ r73278 | benjamin.peterson | 2009-06-07 17:33:11 -0500 (Sun, 07 Jun 2009) | 1 line inherit from object ........ r73279 | benjamin.peterson | 2009-06-07 17:35:00 -0500 (Sun, 07 Jun 2009) | 1 line always inherit from an appropiate base class ........ r73280 | benjamin.peterson | 2009-06-07 17:54:35 -0500 (Sun, 07 Jun 2009) | 1 line use booleans for flags ........ r73299 | georg.brandl | 2009-06-08 13:41:36 -0500 (Mon, 08 Jun 2009) | 1 line Typo fix. ........ r73308 | benjamin.peterson | 2009-06-08 17:18:32 -0500 (Mon, 08 Jun 2009) | 1 line remove useless assertion ........ r73312 | benjamin.peterson | 2009-06-08 18:44:13 -0500 (Mon, 08 Jun 2009) | 1 line remove error checks already done in set_context() ........ r73313 | r.david.murray | 2009-06-08 19:44:22 -0500 (Mon, 08 Jun 2009) | 4 lines Issue 2947: document how return code handling translates from os.popen to subprocess. Also fixes reference link in the os.spawn documentation. ........ r73317 | benjamin.peterson | 2009-06-09 12:24:26 -0500 (Tue, 09 Jun 2009) | 1 line make ast.c depend on the grammar ........ r73318 | benjamin.peterson | 2009-06-09 12:29:51 -0500 (Tue, 09 Jun 2009) | 1 line explain why keyword names are not just NAME ........ r73321 | benjamin.peterson | 2009-06-09 16:13:43 -0500 (Tue, 09 Jun 2009) | 1 line update symbol.py from with statement changes ........ r73324 | amaury.forgeotdarc | 2009-06-09 17:53:16 -0500 (Tue, 09 Jun 2009) | 2 lines Avoid invoking the parser/compiler just to test the presence of a function. ........ r73331 | benjamin.peterson | 2009-06-10 08:45:31 -0500 (Wed, 10 Jun 2009) | 1 line fix spelling ........ r73335 | raymond.hettinger | 2009-06-10 11:15:40 -0500 (Wed, 10 Jun 2009) | 1 line Fix signed/unsigned compiler warning. ........ r73340 | amaury.forgeotdarc | 2009-06-10 15:30:19 -0500 (Wed, 10 Jun 2009) | 2 lines Fix a typo spotted by Nick Coghlan. ........ r73363 | benjamin.peterson | 2009-06-11 12:51:17 -0500 (Thu, 11 Jun 2009) | 1 line use multi-with syntax ........
2009-06-11 22:54:11 +00:00
reflow=False)
self.emit("%s _Py_%s(%s);" % (ctype, name, argstr), False)
def visitProduct(self, prod, name):
self.emit_function(name, get_c_type(name),
self.get_args(prod.fields),
self.get_args(prod.attributes),
union=False)
class FunctionVisitor(PrototypeVisitor):
"""Visitor to generate constructor functions for AST."""
Merged revisions 73196,73278-73280,73299,73308,73312-73313,73317-73318,73321,73324,73331,73335,73340,73363 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r73196 | benjamin.peterson | 2009-06-03 20:40:29 -0500 (Wed, 03 Jun 2009) | 1 line use the offical api ........ r73278 | benjamin.peterson | 2009-06-07 17:33:11 -0500 (Sun, 07 Jun 2009) | 1 line inherit from object ........ r73279 | benjamin.peterson | 2009-06-07 17:35:00 -0500 (Sun, 07 Jun 2009) | 1 line always inherit from an appropiate base class ........ r73280 | benjamin.peterson | 2009-06-07 17:54:35 -0500 (Sun, 07 Jun 2009) | 1 line use booleans for flags ........ r73299 | georg.brandl | 2009-06-08 13:41:36 -0500 (Mon, 08 Jun 2009) | 1 line Typo fix. ........ r73308 | benjamin.peterson | 2009-06-08 17:18:32 -0500 (Mon, 08 Jun 2009) | 1 line remove useless assertion ........ r73312 | benjamin.peterson | 2009-06-08 18:44:13 -0500 (Mon, 08 Jun 2009) | 1 line remove error checks already done in set_context() ........ r73313 | r.david.murray | 2009-06-08 19:44:22 -0500 (Mon, 08 Jun 2009) | 4 lines Issue 2947: document how return code handling translates from os.popen to subprocess. Also fixes reference link in the os.spawn documentation. ........ r73317 | benjamin.peterson | 2009-06-09 12:24:26 -0500 (Tue, 09 Jun 2009) | 1 line make ast.c depend on the grammar ........ r73318 | benjamin.peterson | 2009-06-09 12:29:51 -0500 (Tue, 09 Jun 2009) | 1 line explain why keyword names are not just NAME ........ r73321 | benjamin.peterson | 2009-06-09 16:13:43 -0500 (Tue, 09 Jun 2009) | 1 line update symbol.py from with statement changes ........ r73324 | amaury.forgeotdarc | 2009-06-09 17:53:16 -0500 (Tue, 09 Jun 2009) | 2 lines Avoid invoking the parser/compiler just to test the presence of a function. ........ r73331 | benjamin.peterson | 2009-06-10 08:45:31 -0500 (Wed, 10 Jun 2009) | 1 line fix spelling ........ r73335 | raymond.hettinger | 2009-06-10 11:15:40 -0500 (Wed, 10 Jun 2009) | 1 line Fix signed/unsigned compiler warning. ........ r73340 | amaury.forgeotdarc | 2009-06-10 15:30:19 -0500 (Wed, 10 Jun 2009) | 2 lines Fix a typo spotted by Nick Coghlan. ........ r73363 | benjamin.peterson | 2009-06-11 12:51:17 -0500 (Thu, 11 Jun 2009) | 1 line use multi-with syntax ........
2009-06-11 22:54:11 +00:00
def emit_function(self, name, ctype, args, attrs, union=True):
def emit(s, depth=0, reflow=True):
self.emit(s, depth, reflow)
argstr = ", ".join(["%s %s" % (atype, aname)
for atype, aname, opt in args + attrs])
if argstr:
argstr += ", PyArena *arena"
else:
argstr = "PyArena *arena"
self.emit("%s" % ctype, 0)
emit("%s(%s)" % (name, argstr))
emit("{")
emit("%s p;" % ctype, 1)
for argtype, argname, opt in args:
if not opt and argtype != "int":
emit("if (!%s) {" % argname, 1)
emit("PyErr_SetString(PyExc_ValueError,", 2)
msg = "field '%s' is required for %s" % (argname, name)
emit(' "%s");' % msg,
Merged revisions 73196,73278-73280,73299,73308,73312-73313,73317-73318,73321,73324,73331,73335,73340,73363 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r73196 | benjamin.peterson | 2009-06-03 20:40:29 -0500 (Wed, 03 Jun 2009) | 1 line use the offical api ........ r73278 | benjamin.peterson | 2009-06-07 17:33:11 -0500 (Sun, 07 Jun 2009) | 1 line inherit from object ........ r73279 | benjamin.peterson | 2009-06-07 17:35:00 -0500 (Sun, 07 Jun 2009) | 1 line always inherit from an appropiate base class ........ r73280 | benjamin.peterson | 2009-06-07 17:54:35 -0500 (Sun, 07 Jun 2009) | 1 line use booleans for flags ........ r73299 | georg.brandl | 2009-06-08 13:41:36 -0500 (Mon, 08 Jun 2009) | 1 line Typo fix. ........ r73308 | benjamin.peterson | 2009-06-08 17:18:32 -0500 (Mon, 08 Jun 2009) | 1 line remove useless assertion ........ r73312 | benjamin.peterson | 2009-06-08 18:44:13 -0500 (Mon, 08 Jun 2009) | 1 line remove error checks already done in set_context() ........ r73313 | r.david.murray | 2009-06-08 19:44:22 -0500 (Mon, 08 Jun 2009) | 4 lines Issue 2947: document how return code handling translates from os.popen to subprocess. Also fixes reference link in the os.spawn documentation. ........ r73317 | benjamin.peterson | 2009-06-09 12:24:26 -0500 (Tue, 09 Jun 2009) | 1 line make ast.c depend on the grammar ........ r73318 | benjamin.peterson | 2009-06-09 12:29:51 -0500 (Tue, 09 Jun 2009) | 1 line explain why keyword names are not just NAME ........ r73321 | benjamin.peterson | 2009-06-09 16:13:43 -0500 (Tue, 09 Jun 2009) | 1 line update symbol.py from with statement changes ........ r73324 | amaury.forgeotdarc | 2009-06-09 17:53:16 -0500 (Tue, 09 Jun 2009) | 2 lines Avoid invoking the parser/compiler just to test the presence of a function. ........ r73331 | benjamin.peterson | 2009-06-10 08:45:31 -0500 (Wed, 10 Jun 2009) | 1 line fix spelling ........ r73335 | raymond.hettinger | 2009-06-10 11:15:40 -0500 (Wed, 10 Jun 2009) | 1 line Fix signed/unsigned compiler warning. ........ r73340 | amaury.forgeotdarc | 2009-06-10 15:30:19 -0500 (Wed, 10 Jun 2009) | 2 lines Fix a typo spotted by Nick Coghlan. ........ r73363 | benjamin.peterson | 2009-06-11 12:51:17 -0500 (Thu, 11 Jun 2009) | 1 line use multi-with syntax ........
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2, reflow=False)
emit('return NULL;', 2)
emit('}', 1)
emit("p = (%s)PyArena_Malloc(arena, sizeof(*p));" % ctype, 1);
emit("if (!p)", 1)
emit("return NULL;", 2)
if union:
self.emit_body_union(name, args, attrs)
else:
self.emit_body_struct(name, args, attrs)
emit("return p;", 1)
emit("}")
emit("")
def emit_body_union(self, name, args, attrs):
Merged revisions 73196,73278-73280,73299,73308,73312-73313,73317-73318,73321,73324,73331,73335,73340,73363 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r73196 | benjamin.peterson | 2009-06-03 20:40:29 -0500 (Wed, 03 Jun 2009) | 1 line use the offical api ........ r73278 | benjamin.peterson | 2009-06-07 17:33:11 -0500 (Sun, 07 Jun 2009) | 1 line inherit from object ........ r73279 | benjamin.peterson | 2009-06-07 17:35:00 -0500 (Sun, 07 Jun 2009) | 1 line always inherit from an appropiate base class ........ r73280 | benjamin.peterson | 2009-06-07 17:54:35 -0500 (Sun, 07 Jun 2009) | 1 line use booleans for flags ........ r73299 | georg.brandl | 2009-06-08 13:41:36 -0500 (Mon, 08 Jun 2009) | 1 line Typo fix. ........ r73308 | benjamin.peterson | 2009-06-08 17:18:32 -0500 (Mon, 08 Jun 2009) | 1 line remove useless assertion ........ r73312 | benjamin.peterson | 2009-06-08 18:44:13 -0500 (Mon, 08 Jun 2009) | 1 line remove error checks already done in set_context() ........ r73313 | r.david.murray | 2009-06-08 19:44:22 -0500 (Mon, 08 Jun 2009) | 4 lines Issue 2947: document how return code handling translates from os.popen to subprocess. Also fixes reference link in the os.spawn documentation. ........ r73317 | benjamin.peterson | 2009-06-09 12:24:26 -0500 (Tue, 09 Jun 2009) | 1 line make ast.c depend on the grammar ........ r73318 | benjamin.peterson | 2009-06-09 12:29:51 -0500 (Tue, 09 Jun 2009) | 1 line explain why keyword names are not just NAME ........ r73321 | benjamin.peterson | 2009-06-09 16:13:43 -0500 (Tue, 09 Jun 2009) | 1 line update symbol.py from with statement changes ........ r73324 | amaury.forgeotdarc | 2009-06-09 17:53:16 -0500 (Tue, 09 Jun 2009) | 2 lines Avoid invoking the parser/compiler just to test the presence of a function. ........ r73331 | benjamin.peterson | 2009-06-10 08:45:31 -0500 (Wed, 10 Jun 2009) | 1 line fix spelling ........ r73335 | raymond.hettinger | 2009-06-10 11:15:40 -0500 (Wed, 10 Jun 2009) | 1 line Fix signed/unsigned compiler warning. ........ r73340 | amaury.forgeotdarc | 2009-06-10 15:30:19 -0500 (Wed, 10 Jun 2009) | 2 lines Fix a typo spotted by Nick Coghlan. ........ r73363 | benjamin.peterson | 2009-06-11 12:51:17 -0500 (Thu, 11 Jun 2009) | 1 line use multi-with syntax ........
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def emit(s, depth=0, reflow=True):
self.emit(s, depth, reflow)
emit("p->kind = %s_kind;" % name, 1)
for argtype, argname, opt in args:
emit("p->v.%s.%s = %s;" % (name, argname, argname), 1)
for argtype, argname, opt in attrs:
emit("p->%s = %s;" % (argname, argname), 1)
def emit_body_struct(self, name, args, attrs):
Merged revisions 73196,73278-73280,73299,73308,73312-73313,73317-73318,73321,73324,73331,73335,73340,73363 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r73196 | benjamin.peterson | 2009-06-03 20:40:29 -0500 (Wed, 03 Jun 2009) | 1 line use the offical api ........ r73278 | benjamin.peterson | 2009-06-07 17:33:11 -0500 (Sun, 07 Jun 2009) | 1 line inherit from object ........ r73279 | benjamin.peterson | 2009-06-07 17:35:00 -0500 (Sun, 07 Jun 2009) | 1 line always inherit from an appropiate base class ........ r73280 | benjamin.peterson | 2009-06-07 17:54:35 -0500 (Sun, 07 Jun 2009) | 1 line use booleans for flags ........ r73299 | georg.brandl | 2009-06-08 13:41:36 -0500 (Mon, 08 Jun 2009) | 1 line Typo fix. ........ r73308 | benjamin.peterson | 2009-06-08 17:18:32 -0500 (Mon, 08 Jun 2009) | 1 line remove useless assertion ........ r73312 | benjamin.peterson | 2009-06-08 18:44:13 -0500 (Mon, 08 Jun 2009) | 1 line remove error checks already done in set_context() ........ r73313 | r.david.murray | 2009-06-08 19:44:22 -0500 (Mon, 08 Jun 2009) | 4 lines Issue 2947: document how return code handling translates from os.popen to subprocess. Also fixes reference link in the os.spawn documentation. ........ r73317 | benjamin.peterson | 2009-06-09 12:24:26 -0500 (Tue, 09 Jun 2009) | 1 line make ast.c depend on the grammar ........ r73318 | benjamin.peterson | 2009-06-09 12:29:51 -0500 (Tue, 09 Jun 2009) | 1 line explain why keyword names are not just NAME ........ r73321 | benjamin.peterson | 2009-06-09 16:13:43 -0500 (Tue, 09 Jun 2009) | 1 line update symbol.py from with statement changes ........ r73324 | amaury.forgeotdarc | 2009-06-09 17:53:16 -0500 (Tue, 09 Jun 2009) | 2 lines Avoid invoking the parser/compiler just to test the presence of a function. ........ r73331 | benjamin.peterson | 2009-06-10 08:45:31 -0500 (Wed, 10 Jun 2009) | 1 line fix spelling ........ r73335 | raymond.hettinger | 2009-06-10 11:15:40 -0500 (Wed, 10 Jun 2009) | 1 line Fix signed/unsigned compiler warning. ........ r73340 | amaury.forgeotdarc | 2009-06-10 15:30:19 -0500 (Wed, 10 Jun 2009) | 2 lines Fix a typo spotted by Nick Coghlan. ........ r73363 | benjamin.peterson | 2009-06-11 12:51:17 -0500 (Thu, 11 Jun 2009) | 1 line use multi-with syntax ........
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def emit(s, depth=0, reflow=True):
self.emit(s, depth, reflow)
for argtype, argname, opt in args:
emit("p->%s = %s;" % (argname, argname), 1)
for argtype, argname, opt in attrs:
emit("p->%s = %s;" % (argname, argname), 1)
class PickleVisitor(EmitVisitor):
def visitModule(self, mod):
for dfn in mod.dfns:
self.visit(dfn)
def visitType(self, type):
self.visit(type.value, type.name)
def visitSum(self, sum, name):
pass
def visitProduct(self, sum, name):
pass
def visitConstructor(self, cons, name):
pass
def visitField(self, sum):
pass
class Obj2ModPrototypeVisitor(PickleVisitor):
def visitProduct(self, prod, name):
code = "static int obj2ast_%s(struct ast_state *state, PyObject* obj, %s* out, PyArena* arena);"
self.emit(code % (name, get_c_type(name)), 0)
visitSum = visitProduct
class Obj2ModVisitor(PickleVisitor):
def funcHeader(self, name):
ctype = get_c_type(name)
self.emit("int", 0)
self.emit("obj2ast_%s(struct ast_state *state, PyObject* obj, %s* out, PyArena* arena)" % (name, ctype), 0)
self.emit("{", 0)
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self.emit("int isinstance;", 1)
self.emit("", 0)
def sumTrailer(self, name, add_label=False):
self.emit("", 0)
# there's really nothing more we can do if this fails ...
error = "expected some sort of %s, but got %%R" % name
format = "PyErr_Format(PyExc_TypeError, \"%s\", obj);"
self.emit(format % error, 1, reflow=False)
if add_label:
self.emit("failed:", 1)
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self.emit("Py_XDECREF(tmp);", 1)
self.emit("return 1;", 1)
self.emit("}", 0)
self.emit("", 0)
def simpleSum(self, sum, name):
self.funcHeader(name)
for t in sum.types:
line = ("isinstance = PyObject_IsInstance(obj, "
"state->%s_type);")
self.emit(line % (t.name,), 1)
self.emit("if (isinstance == -1) {", 1)
self.emit("return 1;", 2)
self.emit("}", 1)
self.emit("if (isinstance) {", 1)
self.emit("*out = %s;" % t.name, 2)
self.emit("return 0;", 2)
self.emit("}", 1)
self.sumTrailer(name)
def buildArgs(self, fields):
return ", ".join(fields + ["arena"])
def complexSum(self, sum, name):
self.funcHeader(name)
self.emit("PyObject *tmp = NULL;", 1)
self.emit("PyObject *tp;", 1)
for a in sum.attributes:
self.visitAttributeDeclaration(a, name, sum=sum)
self.emit("", 0)
# XXX: should we only do this for 'expr'?
self.emit("if (obj == Py_None) {", 1)
self.emit("*out = NULL;", 2)
self.emit("return 0;", 2)
self.emit("}", 1)
for a in sum.attributes:
self.visitField(a, name, sum=sum, depth=1)
for t in sum.types:
self.emit("tp = state->%s_type;" % (t.name,), 1)
self.emit("isinstance = PyObject_IsInstance(obj, tp);", 1)
self.emit("if (isinstance == -1) {", 1)
self.emit("return 1;", 2)
self.emit("}", 1)
self.emit("if (isinstance) {", 1)
for f in t.fields:
self.visitFieldDeclaration(f, t.name, sum=sum, depth=2)
self.emit("", 0)
for f in t.fields:
self.visitField(f, t.name, sum=sum, depth=2)
args = [f.name for f in t.fields] + [a.name for a in sum.attributes]
self.emit("*out = %s(%s);" % (t.name, self.buildArgs(args)), 2)
self.emit("if (*out == NULL) goto failed;", 2)
self.emit("return 0;", 2)
self.emit("}", 1)
self.sumTrailer(name, True)
def visitAttributeDeclaration(self, a, name, sum=sum):
ctype = get_c_type(a.type)
self.emit("%s %s;" % (ctype, a.name), 1)
def visitSum(self, sum, name):
if is_simple(sum):
self.simpleSum(sum, name)
else:
self.complexSum(sum, name)
def visitProduct(self, prod, name):
ctype = get_c_type(name)
self.emit("int", 0)
self.emit("obj2ast_%s(struct ast_state *state, PyObject* obj, %s* out, PyArena* arena)" % (name, ctype), 0)
self.emit("{", 0)
self.emit("PyObject* tmp = NULL;", 1)
for f in prod.fields:
self.visitFieldDeclaration(f, name, prod=prod, depth=1)
for a in prod.attributes:
self.visitFieldDeclaration(a, name, prod=prod, depth=1)
self.emit("", 0)
for f in prod.fields:
self.visitField(f, name, prod=prod, depth=1)
for a in prod.attributes:
self.visitField(a, name, prod=prod, depth=1)
args = [f.name for f in prod.fields]
args.extend([a.name for a in prod.attributes])
self.emit("*out = %s(%s);" % (name, self.buildArgs(args)), 1)
self.emit("return 0;", 1)
self.emit("failed:", 0)
self.emit("Py_XDECREF(tmp);", 1)
self.emit("return 1;", 1)
self.emit("}", 0)
self.emit("", 0)
def visitFieldDeclaration(self, field, name, sum=None, prod=None, depth=0):
ctype = get_c_type(field.type)
if field.seq:
if self.isSimpleType(field):
self.emit("asdl_int_seq* %s;" % field.name, depth)
else:
_type = field.type
self.emit(f"asdl_{field.type}_seq* {field.name};", depth)
else:
ctype = get_c_type(field.type)
self.emit("%s %s;" % (ctype, field.name), depth)
def isSimpleSum(self, field):
# XXX can the members of this list be determined automatically?
return field.type in ('expr_context', 'boolop', 'operator',
'unaryop', 'cmpop')
def isNumeric(self, field):
return get_c_type(field.type) in ("int", "bool")
def isSimpleType(self, field):
return self.isSimpleSum(field) or self.isNumeric(field)
def visitField(self, field, name, sum=None, prod=None, depth=0):
ctype = get_c_type(field.type)
line = "if (_PyObject_LookupAttr(obj, state->%s, &tmp) < 0) {"
self.emit(line % field.name, depth)
self.emit("return 1;", depth+1)
self.emit("}", depth)
if not field.opt:
self.emit("if (tmp == NULL) {", depth)
message = "required field \\\"%s\\\" missing from %s" % (field.name, name)
format = "PyErr_SetString(PyExc_TypeError, \"%s\");"
self.emit(format % message, depth+1, reflow=False)
self.emit("return 1;", depth+1)
else:
self.emit("if (tmp == NULL || tmp == Py_None) {", depth)
self.emit("Py_CLEAR(tmp);", depth+1)
if self.isNumeric(field):
self.emit("%s = 0;" % field.name, depth+1)
elif not self.isSimpleType(field):
self.emit("%s = NULL;" % field.name, depth+1)
else:
raise TypeError("could not determine the default value for %s" % field.name)
self.emit("}", depth)
self.emit("else {", depth)
self.emit("int res;", depth+1)
if field.seq:
self.emit("Py_ssize_t len;", depth+1)
self.emit("Py_ssize_t i;", depth+1)
self.emit("if (!PyList_Check(tmp)) {", depth+1)
self.emit("PyErr_Format(PyExc_TypeError, \"%s field \\\"%s\\\" must "
"be a list, not a %%.200s\", _PyType_Name(Py_TYPE(tmp)));" %
(name, field.name),
depth+2, reflow=False)
self.emit("goto failed;", depth+2)
self.emit("}", depth+1)
self.emit("len = PyList_GET_SIZE(tmp);", depth+1)
if self.isSimpleType(field):
self.emit("%s = _Py_asdl_int_seq_new(len, arena);" % field.name, depth+1)
else:
self.emit("%s = _Py_asdl_%s_seq_new(len, arena);" % (field.name, field.type), depth+1)
self.emit("if (%s == NULL) goto failed;" % field.name, depth+1)
self.emit("for (i = 0; i < len; i++) {", depth+1)
self.emit("%s val;" % ctype, depth+2)
self.emit("PyObject *tmp2 = PyList_GET_ITEM(tmp, i);", depth+2)
self.emit("Py_INCREF(tmp2);", depth+2)
self.emit("res = obj2ast_%s(state, tmp2, &val, arena);" %
field.type, depth+2, reflow=False)
self.emit("Py_DECREF(tmp2);", depth+2)
self.emit("if (res != 0) goto failed;", depth+2)
self.emit("if (len != PyList_GET_SIZE(tmp)) {", depth+2)
self.emit("PyErr_SetString(PyExc_RuntimeError, \"%s field \\\"%s\\\" "
"changed size during iteration\");" %
(name, field.name),
depth+3, reflow=False)
self.emit("goto failed;", depth+3)
self.emit("}", depth+2)
self.emit("asdl_seq_SET(%s, i, val);" % field.name, depth+2)
self.emit("}", depth+1)
else:
self.emit("res = obj2ast_%s(state, tmp, &%s, arena);" %
(field.type, field.name), depth+1)
self.emit("if (res != 0) goto failed;", depth+1)
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self.emit("Py_CLEAR(tmp);", depth+1)
self.emit("}", depth)
class SequenceConstructorVisitor(EmitVisitor):
def visitModule(self, mod):
for dfn in mod.dfns:
self.visit(dfn)
def visitType(self, type):
self.visit(type.value, type.name)
def visitProduct(self, prod, name):
self.emit_sequence_constructor(name, get_c_type(name))
def visitSum(self, sum, name):
if not is_simple(sum):
self.emit_sequence_constructor(name, get_c_type(name))
def emit_sequence_constructor(self, name, type):
self.emit(f"GENERATE_ASDL_SEQ_CONSTRUCTOR({name}, {type})", depth=0)
class PyTypesDeclareVisitor(PickleVisitor):
def visitProduct(self, prod, name):
self.emit_type("%s_type" % name)
self.emit("static PyObject* ast2obj_%s(struct ast_state *state, void*);" % name, 0)
if prod.attributes:
for a in prod.attributes:
self.emit_identifier(a.name)
self.emit("static const char * const %s_attributes[] = {" % name, 0)
for a in prod.attributes:
self.emit('"%s",' % a.name, 1)
self.emit("};", 0)
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if prod.fields:
for f in prod.fields:
self.emit_identifier(f.name)
self.emit("static const char * const %s_fields[]={" % name,0)
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for f in prod.fields:
self.emit('"%s",' % f.name, 1)
self.emit("};", 0)
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def visitSum(self, sum, name):
self.emit_type("%s_type" % name)
if sum.attributes:
for a in sum.attributes:
self.emit_identifier(a.name)
self.emit("static const char * const %s_attributes[] = {" % name, 0)
for a in sum.attributes:
self.emit('"%s",' % a.name, 1)
self.emit("};", 0)
ptype = "void*"
if is_simple(sum):
ptype = get_c_type(name)
for t in sum.types:
self.emit_singleton("%s_singleton" % t.name)
self.emit("static PyObject* ast2obj_%s(struct ast_state *state, %s);" % (name, ptype), 0)
for t in sum.types:
self.visitConstructor(t, name)
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def visitConstructor(self, cons, name):
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if cons.fields:
for t in cons.fields:
self.emit_identifier(t.name)
self.emit("static const char * const %s_fields[]={" % cons.name, 0)
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for t in cons.fields:
self.emit('"%s",' % t.name, 1)
self.emit("};",0)
class PyTypesVisitor(PickleVisitor):
def visitModule(self, mod):
self.emit("""
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typedef struct {
PyObject_HEAD
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PyObject *dict;
} AST_object;
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static void
ast_dealloc(AST_object *self)
{
/* bpo-31095: UnTrack is needed before calling any callbacks */
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PyTypeObject *tp = Py_TYPE(self);
PyObject_GC_UnTrack(self);
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Py_CLEAR(self->dict);
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freefunc free_func = PyType_GetSlot(tp, Py_tp_free);
assert(free_func != NULL);
free_func(self);
Py_DECREF(tp);
2012-03-15 02:50:29 +00:00
}
static int
ast_traverse(AST_object *self, visitproc visit, void *arg)
{
Py_VISIT(Py_TYPE(self));
Py_VISIT(self->dict);
return 0;
}
static int
ast_clear(AST_object *self)
{
Py_CLEAR(self->dict);
return 0;
}
static int
ast_type_init(PyObject *self, PyObject *args, PyObject *kw)
{
struct ast_state *state = get_ast_state();
if (state == NULL) {
return -1;
}
Py_ssize_t i, numfields = 0;
int res = -1;
PyObject *key, *value, *fields;
if (_PyObject_LookupAttr((PyObject*)Py_TYPE(self), state->_fields, &fields) < 0) {
goto cleanup;
}
if (fields) {
numfields = PySequence_Size(fields);
if (numfields == -1) {
goto cleanup;
}
}
res = 0; /* if no error occurs, this stays 0 to the end */
if (numfields < PyTuple_GET_SIZE(args)) {
PyErr_Format(PyExc_TypeError, "%.400s constructor takes at most "
"%zd positional argument%s",
_PyType_Name(Py_TYPE(self)),
numfields, numfields == 1 ? "" : "s");
res = -1;
goto cleanup;
}
for (i = 0; i < PyTuple_GET_SIZE(args); i++) {
/* cannot be reached when fields is NULL */
PyObject *name = PySequence_GetItem(fields, i);
if (!name) {
res = -1;
goto cleanup;
}
res = PyObject_SetAttr(self, name, PyTuple_GET_ITEM(args, i));
Py_DECREF(name);
if (res < 0) {
goto cleanup;
}
}
if (kw) {
i = 0; /* needed by PyDict_Next */
while (PyDict_Next(kw, &i, &key, &value)) {
int contains = PySequence_Contains(fields, key);
if (contains == -1) {
res = -1;
goto cleanup;
} else if (contains == 1) {
Py_ssize_t p = PySequence_Index(fields, key);
if (p == -1) {
res = -1;
goto cleanup;
}
if (p < PyTuple_GET_SIZE(args)) {
PyErr_Format(PyExc_TypeError,
"%.400s got multiple values for argument '%U'",
Py_TYPE(self)->tp_name, key);
res = -1;
goto cleanup;
}
}
res = PyObject_SetAttr(self, key, value);
if (res < 0) {
goto cleanup;
}
}
}
cleanup:
Py_XDECREF(fields);
return res;
}
Merged revisions 61440-61441,61443,61445-61448,61451-61452,61455-61457,61459-61464,61466-61467,61469-61470,61476-61477,61479,61481-61482,61485,61487,61490,61493-61494,61497,61499-61502,61505-61506,61508,61511-61514,61519,61521-61522,61530-61531,61533-61537,61541-61555,61557-61558,61561-61562,61566-61569,61572-61574,61578-61579,61583-61584,61588-61589,61592,61594,61598-61601,61603-61604,61607-61612,61617,61619-61620,61624,61626,61628-61630,61635-61638,61640-61643,61645,61648,61653-61655,61659-61662,61664,61666,61668-61671,61673,61675,61679-61680,61682,61685-61686,61689-61695,61697-61699,61701-61703,61706,61710,61713,61717,61723,61726-61730,61736,61738,61740,61742,61745-61752,61754-61760,61762-61764,61768,61770-61772,61774-61775,61784-61787,61789-61792,61794-61795,61797-61806,61808-61809,61811-61812,61814-61819,61824,61826-61833,61835-61840,61843-61845,61848,61850,61854-61862,61865-61866,61868,61872-61873,61876-61877,61883-61888,61890-61891,61893-61899,61901-61903,61905-61912,61914,61917,61920-61921,61927,61930,61932-61934,61939,61941-61942,61944-61951,61955,61960-61963,61980,61982-61983,61991,61994-61996,62001-62003,62008-62010,62016-62017,62022,62024,62027,62031-62034,62041,62045-62046,62048,62050-62051,62055-62066,62068-62074,62076-62078 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r62048 | georg.brandl | 2008-03-29 23:53:55 -0700 (Sat, 29 Mar 2008) | 2 lines Adapt test_ast to the new ExceptHandler type. ........ r62050 | georg.brandl | 2008-03-30 00:09:22 -0700 (Sun, 30 Mar 2008) | 2 lines Convert test_ast to unittest and add a test for r62049. ........ r62051 | georg.brandl | 2008-03-30 12:00:49 -0700 (Sun, 30 Mar 2008) | 2 lines Make _fields attr for no fields consistent with _attributes attr. ........ r62059 | georg.brandl | 2008-03-30 13:20:39 -0700 (Sun, 30 Mar 2008) | 2 lines Make AST nodes pickleable. ........
2008-03-31 05:29:39 +00:00
/* Pickling support */
static PyObject *
ast_type_reduce(PyObject *self, PyObject *unused)
{
struct ast_state *state = get_ast_state();
if (state == NULL) {
return NULL;
}
PyObject *dict;
if (_PyObject_LookupAttr(self, state->__dict__, &dict) < 0) {
return NULL;
Merged revisions 61440-61441,61443,61445-61448,61451-61452,61455-61457,61459-61464,61466-61467,61469-61470,61476-61477,61479,61481-61482,61485,61487,61490,61493-61494,61497,61499-61502,61505-61506,61508,61511-61514,61519,61521-61522,61530-61531,61533-61537,61541-61555,61557-61558,61561-61562,61566-61569,61572-61574,61578-61579,61583-61584,61588-61589,61592,61594,61598-61601,61603-61604,61607-61612,61617,61619-61620,61624,61626,61628-61630,61635-61638,61640-61643,61645,61648,61653-61655,61659-61662,61664,61666,61668-61671,61673,61675,61679-61680,61682,61685-61686,61689-61695,61697-61699,61701-61703,61706,61710,61713,61717,61723,61726-61730,61736,61738,61740,61742,61745-61752,61754-61760,61762-61764,61768,61770-61772,61774-61775,61784-61787,61789-61792,61794-61795,61797-61806,61808-61809,61811-61812,61814-61819,61824,61826-61833,61835-61840,61843-61845,61848,61850,61854-61862,61865-61866,61868,61872-61873,61876-61877,61883-61888,61890-61891,61893-61899,61901-61903,61905-61912,61914,61917,61920-61921,61927,61930,61932-61934,61939,61941-61942,61944-61951,61955,61960-61963,61980,61982-61983,61991,61994-61996,62001-62003,62008-62010,62016-62017,62022,62024,62027,62031-62034,62041,62045-62046,62048,62050-62051,62055-62066,62068-62074,62076-62078 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r62048 | georg.brandl | 2008-03-29 23:53:55 -0700 (Sat, 29 Mar 2008) | 2 lines Adapt test_ast to the new ExceptHandler type. ........ r62050 | georg.brandl | 2008-03-30 00:09:22 -0700 (Sun, 30 Mar 2008) | 2 lines Convert test_ast to unittest and add a test for r62049. ........ r62051 | georg.brandl | 2008-03-30 12:00:49 -0700 (Sun, 30 Mar 2008) | 2 lines Make _fields attr for no fields consistent with _attributes attr. ........ r62059 | georg.brandl | 2008-03-30 13:20:39 -0700 (Sun, 30 Mar 2008) | 2 lines Make AST nodes pickleable. ........
2008-03-31 05:29:39 +00:00
}
if (dict) {
return Py_BuildValue("O()N", Py_TYPE(self), dict);
Merged revisions 61440-61441,61443,61445-61448,61451-61452,61455-61457,61459-61464,61466-61467,61469-61470,61476-61477,61479,61481-61482,61485,61487,61490,61493-61494,61497,61499-61502,61505-61506,61508,61511-61514,61519,61521-61522,61530-61531,61533-61537,61541-61555,61557-61558,61561-61562,61566-61569,61572-61574,61578-61579,61583-61584,61588-61589,61592,61594,61598-61601,61603-61604,61607-61612,61617,61619-61620,61624,61626,61628-61630,61635-61638,61640-61643,61645,61648,61653-61655,61659-61662,61664,61666,61668-61671,61673,61675,61679-61680,61682,61685-61686,61689-61695,61697-61699,61701-61703,61706,61710,61713,61717,61723,61726-61730,61736,61738,61740,61742,61745-61752,61754-61760,61762-61764,61768,61770-61772,61774-61775,61784-61787,61789-61792,61794-61795,61797-61806,61808-61809,61811-61812,61814-61819,61824,61826-61833,61835-61840,61843-61845,61848,61850,61854-61862,61865-61866,61868,61872-61873,61876-61877,61883-61888,61890-61891,61893-61899,61901-61903,61905-61912,61914,61917,61920-61921,61927,61930,61932-61934,61939,61941-61942,61944-61951,61955,61960-61963,61980,61982-61983,61991,61994-61996,62001-62003,62008-62010,62016-62017,62022,62024,62027,62031-62034,62041,62045-62046,62048,62050-62051,62055-62066,62068-62074,62076-62078 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r62048 | georg.brandl | 2008-03-29 23:53:55 -0700 (Sat, 29 Mar 2008) | 2 lines Adapt test_ast to the new ExceptHandler type. ........ r62050 | georg.brandl | 2008-03-30 00:09:22 -0700 (Sun, 30 Mar 2008) | 2 lines Convert test_ast to unittest and add a test for r62049. ........ r62051 | georg.brandl | 2008-03-30 12:00:49 -0700 (Sun, 30 Mar 2008) | 2 lines Make _fields attr for no fields consistent with _attributes attr. ........ r62059 | georg.brandl | 2008-03-30 13:20:39 -0700 (Sun, 30 Mar 2008) | 2 lines Make AST nodes pickleable. ........
2008-03-31 05:29:39 +00:00
}
return Py_BuildValue("O()", Py_TYPE(self));
}
static PyMemberDef ast_type_members[] = {
{"__dictoffset__", T_PYSSIZET, offsetof(AST_object, dict), READONLY},
{NULL} /* Sentinel */
};
Merged revisions 61440-61441,61443,61445-61448,61451-61452,61455-61457,61459-61464,61466-61467,61469-61470,61476-61477,61479,61481-61482,61485,61487,61490,61493-61494,61497,61499-61502,61505-61506,61508,61511-61514,61519,61521-61522,61530-61531,61533-61537,61541-61555,61557-61558,61561-61562,61566-61569,61572-61574,61578-61579,61583-61584,61588-61589,61592,61594,61598-61601,61603-61604,61607-61612,61617,61619-61620,61624,61626,61628-61630,61635-61638,61640-61643,61645,61648,61653-61655,61659-61662,61664,61666,61668-61671,61673,61675,61679-61680,61682,61685-61686,61689-61695,61697-61699,61701-61703,61706,61710,61713,61717,61723,61726-61730,61736,61738,61740,61742,61745-61752,61754-61760,61762-61764,61768,61770-61772,61774-61775,61784-61787,61789-61792,61794-61795,61797-61806,61808-61809,61811-61812,61814-61819,61824,61826-61833,61835-61840,61843-61845,61848,61850,61854-61862,61865-61866,61868,61872-61873,61876-61877,61883-61888,61890-61891,61893-61899,61901-61903,61905-61912,61914,61917,61920-61921,61927,61930,61932-61934,61939,61941-61942,61944-61951,61955,61960-61963,61980,61982-61983,61991,61994-61996,62001-62003,62008-62010,62016-62017,62022,62024,62027,62031-62034,62041,62045-62046,62048,62050-62051,62055-62066,62068-62074,62076-62078 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r62048 | georg.brandl | 2008-03-29 23:53:55 -0700 (Sat, 29 Mar 2008) | 2 lines Adapt test_ast to the new ExceptHandler type. ........ r62050 | georg.brandl | 2008-03-30 00:09:22 -0700 (Sun, 30 Mar 2008) | 2 lines Convert test_ast to unittest and add a test for r62049. ........ r62051 | georg.brandl | 2008-03-30 12:00:49 -0700 (Sun, 30 Mar 2008) | 2 lines Make _fields attr for no fields consistent with _attributes attr. ........ r62059 | georg.brandl | 2008-03-30 13:20:39 -0700 (Sun, 30 Mar 2008) | 2 lines Make AST nodes pickleable. ........
2008-03-31 05:29:39 +00:00
static PyMethodDef ast_type_methods[] = {
{"__reduce__", ast_type_reduce, METH_NOARGS, NULL},
{NULL}
};
2012-03-12 16:46:44 +00:00
static PyGetSetDef ast_type_getsets[] = {
{"__dict__", PyObject_GenericGetDict, PyObject_GenericSetDict},
{NULL}
};
static PyType_Slot AST_type_slots[] = {
{Py_tp_dealloc, ast_dealloc},
{Py_tp_getattro, PyObject_GenericGetAttr},
{Py_tp_setattro, PyObject_GenericSetAttr},
{Py_tp_traverse, ast_traverse},
{Py_tp_clear, ast_clear},
{Py_tp_members, ast_type_members},
{Py_tp_methods, ast_type_methods},
{Py_tp_getset, ast_type_getsets},
{Py_tp_init, ast_type_init},
{Py_tp_alloc, PyType_GenericAlloc},
{Py_tp_new, PyType_GenericNew},
{Py_tp_free, PyObject_GC_Del},
{0, 0},
};
static PyType_Spec AST_type_spec = {
"ast.AST",
2012-03-12 16:46:44 +00:00
sizeof(AST_object),
0,
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC,
AST_type_slots
};
static PyObject *
make_type(struct ast_state *state, const char *type, PyObject* base,
const char* const* fields, int num_fields, const char *doc)
{
PyObject *fnames, *result;
int i;
Merged revisions 61440-61441,61443,61445-61448,61451-61452,61455-61457,61459-61464,61466-61467,61469-61470,61476-61477,61479,61481-61482,61485,61487,61490,61493-61494,61497,61499-61502,61505-61506,61508,61511-61514,61519,61521-61522,61530-61531,61533-61537,61541-61555,61557-61558,61561-61562,61566-61569,61572-61574,61578-61579,61583-61584,61588-61589,61592,61594,61598-61601,61603-61604,61607-61612,61617,61619-61620,61624,61626,61628-61630,61635-61638,61640-61643,61645,61648,61653-61655,61659-61662,61664,61666,61668-61671,61673,61675,61679-61680,61682,61685-61686,61689-61695,61697-61699,61701-61703,61706,61710,61713,61717,61723,61726-61730,61736,61738,61740,61742,61745-61752,61754-61760,61762-61764,61768,61770-61772,61774-61775,61784-61787,61789-61792,61794-61795,61797-61806,61808-61809,61811-61812,61814-61819,61824,61826-61833,61835-61840,61843-61845,61848,61850,61854-61862,61865-61866,61868,61872-61873,61876-61877,61883-61888,61890-61891,61893-61899,61901-61903,61905-61912,61914,61917,61920-61921,61927,61930,61932-61934,61939,61941-61942,61944-61951,61955,61960-61963,61980,61982-61983,61991,61994-61996,62001-62003,62008-62010,62016-62017,62022,62024,62027,62031-62034,62041,62045-62046,62048,62050-62051,62055-62066,62068-62074,62076-62078 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r62048 | georg.brandl | 2008-03-29 23:53:55 -0700 (Sat, 29 Mar 2008) | 2 lines Adapt test_ast to the new ExceptHandler type. ........ r62050 | georg.brandl | 2008-03-30 00:09:22 -0700 (Sun, 30 Mar 2008) | 2 lines Convert test_ast to unittest and add a test for r62049. ........ r62051 | georg.brandl | 2008-03-30 12:00:49 -0700 (Sun, 30 Mar 2008) | 2 lines Make _fields attr for no fields consistent with _attributes attr. ........ r62059 | georg.brandl | 2008-03-30 13:20:39 -0700 (Sun, 30 Mar 2008) | 2 lines Make AST nodes pickleable. ........
2008-03-31 05:29:39 +00:00
fnames = PyTuple_New(num_fields);
if (!fnames) return NULL;
for (i = 0; i < num_fields; i++) {
PyObject *field = PyUnicode_InternFromString(fields[i]);
if (!field) {
Py_DECREF(fnames);
return NULL;
}
PyTuple_SET_ITEM(fnames, i, field);
}
result = PyObject_CallFunction((PyObject*)&PyType_Type, "s(O){OOOOOs}",
type, base,
state->_fields, fnames,
state->__module__,
state->ast,
state->__doc__, doc);
Py_DECREF(fnames);
return result;
}
static int
add_attributes(struct ast_state *state, PyObject *type, const char * const *attrs, int num_fields)
{
int i, result;
PyObject *s, *l = PyTuple_New(num_fields);
if (!l)
return 0;
for (i = 0; i < num_fields; i++) {
s = PyUnicode_InternFromString(attrs[i]);
if (!s) {
Py_DECREF(l);
return 0;
}
PyTuple_SET_ITEM(l, i, s);
}
result = PyObject_SetAttr(type, state->_attributes, l) >= 0;
Py_DECREF(l);
return result;
}
/* Conversion AST -> Python */
static PyObject* ast2obj_list(struct ast_state *state, asdl_seq *seq, PyObject* (*func)(struct ast_state *state, void*))
{
Py_ssize_t i, n = asdl_seq_LEN(seq);
PyObject *result = PyList_New(n);
PyObject *value;
if (!result)
return NULL;
for (i = 0; i < n; i++) {
value = func(state, asdl_seq_GET_UNTYPED(seq, i));
if (!value) {
Py_DECREF(result);
return NULL;
}
PyList_SET_ITEM(result, i, value);
}
return result;
}
static PyObject* ast2obj_object(struct ast_state *Py_UNUSED(state), void *o)
{
if (!o)
o = Py_None;
Py_INCREF((PyObject*)o);
return (PyObject*)o;
}
#define ast2obj_constant ast2obj_object
#define ast2obj_identifier ast2obj_object
#define ast2obj_string ast2obj_object
static PyObject* ast2obj_int(struct ast_state *Py_UNUSED(state), long b)
{
return PyLong_FromLong(b);
}
/* Conversion Python -> AST */
static int obj2ast_object(struct ast_state *Py_UNUSED(state), PyObject* obj, PyObject** out, PyArena* arena)
{
if (obj == Py_None)
obj = NULL;
if (obj) {
if (PyArena_AddPyObject(arena, obj) < 0) {
*out = NULL;
return -1;
}
Py_INCREF(obj);
}
*out = obj;
return 0;
}
static int obj2ast_constant(struct ast_state *Py_UNUSED(state), PyObject* obj, PyObject** out, PyArena* arena)
{
if (PyArena_AddPyObject(arena, obj) < 0) {
*out = NULL;
return -1;
}
Py_INCREF(obj);
*out = obj;
return 0;
}
static int obj2ast_identifier(struct ast_state *state, PyObject* obj, PyObject** out, PyArena* arena)
{
if (!PyUnicode_CheckExact(obj) && obj != Py_None) {
PyErr_SetString(PyExc_TypeError, "AST identifier must be of type str");
return 1;
}
return obj2ast_object(state, obj, out, arena);
}
static int obj2ast_string(struct ast_state *state, PyObject* obj, PyObject** out, PyArena* arena)
{
if (!PyUnicode_CheckExact(obj) && !PyBytes_CheckExact(obj)) {
PyErr_SetString(PyExc_TypeError, "AST string must be of type str");
return 1;
}
return obj2ast_object(state, obj, out, arena);
}
static int obj2ast_int(struct ast_state* Py_UNUSED(state), PyObject* obj, int* out, PyArena* arena)
{
int i;
if (!PyLong_Check(obj)) {
PyErr_Format(PyExc_ValueError, "invalid integer value: %R", obj);
return 1;
}
i = _PyLong_AsInt(obj);
if (i == -1 && PyErr_Occurred())
return 1;
*out = i;
return 0;
}
static int add_ast_fields(struct ast_state *state)
Merged revisions 66887,66891,66902-66903,66905-66906,66911-66913,66922,66927-66928,66936,66939-66940,66962,66964,66973 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ................ r66887 | benjamin.peterson | 2008-10-13 16:51:40 -0500 (Mon, 13 Oct 2008) | 1 line document how to disable fixers ................ r66891 | amaury.forgeotdarc | 2008-10-14 16:47:22 -0500 (Tue, 14 Oct 2008) | 5 lines #4122: On Windows, Py_UNICODE_ISSPACE cannot be used in an extension module: compilation fails with "undefined reference to _Py_ascii_whitespace" Will backport to 2.6. ................ r66902 | skip.montanaro | 2008-10-15 06:49:10 -0500 (Wed, 15 Oct 2008) | 1 line easter egg ................ r66903 | benjamin.peterson | 2008-10-15 15:34:09 -0500 (Wed, 15 Oct 2008) | 1 line don't recurse into directories that start with '.' ................ r66905 | benjamin.peterson | 2008-10-15 16:05:55 -0500 (Wed, 15 Oct 2008) | 1 line support the optional line argument for idle ................ r66906 | benjamin.peterson | 2008-10-15 16:58:46 -0500 (Wed, 15 Oct 2008) | 1 line add a much requested newline ................ r66911 | benjamin.peterson | 2008-10-15 18:10:28 -0500 (Wed, 15 Oct 2008) | 41 lines Merged revisions 66805,66841,66860,66884-66886,66893,66907,66910 via svnmerge from svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3 ........ r66805 | benjamin.peterson | 2008-10-04 20:11:02 -0500 (Sat, 04 Oct 2008) | 1 line mention what the fixes directory is for ........ r66841 | benjamin.peterson | 2008-10-07 17:48:12 -0500 (Tue, 07 Oct 2008) | 1 line use assertFalse and assertTrue ........ r66860 | benjamin.peterson | 2008-10-08 16:05:07 -0500 (Wed, 08 Oct 2008) | 1 line instead of abusing the pattern matcher, use start_tree to find a next binding ........ r66884 | benjamin.peterson | 2008-10-13 15:50:30 -0500 (Mon, 13 Oct 2008) | 1 line don't print tokens to stdout when -v is given ........ r66885 | benjamin.peterson | 2008-10-13 16:28:57 -0500 (Mon, 13 Oct 2008) | 1 line add the -x option to disable fixers ........ r66886 | benjamin.peterson | 2008-10-13 16:33:53 -0500 (Mon, 13 Oct 2008) | 1 line cut down on some crud ........ r66893 | benjamin.peterson | 2008-10-14 17:16:54 -0500 (Tue, 14 Oct 2008) | 1 line add an optional set literal fixer ........ r66907 | benjamin.peterson | 2008-10-15 16:59:41 -0500 (Wed, 15 Oct 2008) | 1 line don't write backup files by default ........ r66910 | benjamin.peterson | 2008-10-15 17:43:10 -0500 (Wed, 15 Oct 2008) | 1 line add the -n option; it stops backupfiles from being written ........ ................ r66912 | hirokazu.yamamoto | 2008-10-16 01:25:25 -0500 (Thu, 16 Oct 2008) | 2 lines removed unused _PyUnicode_FromFileSystemEncodedObject. made win32_chdir, win32_wchdir static. ................ r66913 | benjamin.peterson | 2008-10-16 13:52:14 -0500 (Thu, 16 Oct 2008) | 1 line document that deque indexing is O(n) #4123 ................ r66922 | benjamin.peterson | 2008-10-16 14:40:14 -0500 (Thu, 16 Oct 2008) | 1 line use new showwarnings signature for idle #3391 ................ r66927 | andrew.kuchling | 2008-10-16 15:15:47 -0500 (Thu, 16 Oct 2008) | 1 line Fix wording (2.6.1 backport candidate) ................ r66928 | georg.brandl | 2008-10-16 15:20:56 -0500 (Thu, 16 Oct 2008) | 2 lines Add more TOC to the whatsnew index page. ................ r66936 | georg.brandl | 2008-10-16 16:20:15 -0500 (Thu, 16 Oct 2008) | 2 lines #4131: FF3 doesn't write cookies.txt files. ................ r66939 | georg.brandl | 2008-10-16 16:36:39 -0500 (Thu, 16 Oct 2008) | 2 lines part of #4012: kill off old name "processing". ................ r66940 | georg.brandl | 2008-10-16 16:38:48 -0500 (Thu, 16 Oct 2008) | 2 lines #4083: add "as" to except handler grammar as per PEP 3110. ................ r66962 | benjamin.peterson | 2008-10-17 15:01:01 -0500 (Fri, 17 Oct 2008) | 1 line clarify CALL_FUNCTION #4141 ................ r66964 | georg.brandl | 2008-10-17 16:41:49 -0500 (Fri, 17 Oct 2008) | 2 lines Fix duplicate word. ................ r66973 | armin.ronacher | 2008-10-19 03:27:43 -0500 (Sun, 19 Oct 2008) | 3 lines Fixed #4067 by implementing _attributes and _fields for the AST root node. ................
2008-10-19 14:07:49 +00:00
{
PyObject *empty_tuple;
Merged revisions 66887,66891,66902-66903,66905-66906,66911-66913,66922,66927-66928,66936,66939-66940,66962,66964,66973 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ................ r66887 | benjamin.peterson | 2008-10-13 16:51:40 -0500 (Mon, 13 Oct 2008) | 1 line document how to disable fixers ................ r66891 | amaury.forgeotdarc | 2008-10-14 16:47:22 -0500 (Tue, 14 Oct 2008) | 5 lines #4122: On Windows, Py_UNICODE_ISSPACE cannot be used in an extension module: compilation fails with "undefined reference to _Py_ascii_whitespace" Will backport to 2.6. ................ r66902 | skip.montanaro | 2008-10-15 06:49:10 -0500 (Wed, 15 Oct 2008) | 1 line easter egg ................ r66903 | benjamin.peterson | 2008-10-15 15:34:09 -0500 (Wed, 15 Oct 2008) | 1 line don't recurse into directories that start with '.' ................ r66905 | benjamin.peterson | 2008-10-15 16:05:55 -0500 (Wed, 15 Oct 2008) | 1 line support the optional line argument for idle ................ r66906 | benjamin.peterson | 2008-10-15 16:58:46 -0500 (Wed, 15 Oct 2008) | 1 line add a much requested newline ................ r66911 | benjamin.peterson | 2008-10-15 18:10:28 -0500 (Wed, 15 Oct 2008) | 41 lines Merged revisions 66805,66841,66860,66884-66886,66893,66907,66910 via svnmerge from svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3 ........ r66805 | benjamin.peterson | 2008-10-04 20:11:02 -0500 (Sat, 04 Oct 2008) | 1 line mention what the fixes directory is for ........ r66841 | benjamin.peterson | 2008-10-07 17:48:12 -0500 (Tue, 07 Oct 2008) | 1 line use assertFalse and assertTrue ........ r66860 | benjamin.peterson | 2008-10-08 16:05:07 -0500 (Wed, 08 Oct 2008) | 1 line instead of abusing the pattern matcher, use start_tree to find a next binding ........ r66884 | benjamin.peterson | 2008-10-13 15:50:30 -0500 (Mon, 13 Oct 2008) | 1 line don't print tokens to stdout when -v is given ........ r66885 | benjamin.peterson | 2008-10-13 16:28:57 -0500 (Mon, 13 Oct 2008) | 1 line add the -x option to disable fixers ........ r66886 | benjamin.peterson | 2008-10-13 16:33:53 -0500 (Mon, 13 Oct 2008) | 1 line cut down on some crud ........ r66893 | benjamin.peterson | 2008-10-14 17:16:54 -0500 (Tue, 14 Oct 2008) | 1 line add an optional set literal fixer ........ r66907 | benjamin.peterson | 2008-10-15 16:59:41 -0500 (Wed, 15 Oct 2008) | 1 line don't write backup files by default ........ r66910 | benjamin.peterson | 2008-10-15 17:43:10 -0500 (Wed, 15 Oct 2008) | 1 line add the -n option; it stops backupfiles from being written ........ ................ r66912 | hirokazu.yamamoto | 2008-10-16 01:25:25 -0500 (Thu, 16 Oct 2008) | 2 lines removed unused _PyUnicode_FromFileSystemEncodedObject. made win32_chdir, win32_wchdir static. ................ r66913 | benjamin.peterson | 2008-10-16 13:52:14 -0500 (Thu, 16 Oct 2008) | 1 line document that deque indexing is O(n) #4123 ................ r66922 | benjamin.peterson | 2008-10-16 14:40:14 -0500 (Thu, 16 Oct 2008) | 1 line use new showwarnings signature for idle #3391 ................ r66927 | andrew.kuchling | 2008-10-16 15:15:47 -0500 (Thu, 16 Oct 2008) | 1 line Fix wording (2.6.1 backport candidate) ................ r66928 | georg.brandl | 2008-10-16 15:20:56 -0500 (Thu, 16 Oct 2008) | 2 lines Add more TOC to the whatsnew index page. ................ r66936 | georg.brandl | 2008-10-16 16:20:15 -0500 (Thu, 16 Oct 2008) | 2 lines #4131: FF3 doesn't write cookies.txt files. ................ r66939 | georg.brandl | 2008-10-16 16:36:39 -0500 (Thu, 16 Oct 2008) | 2 lines part of #4012: kill off old name "processing". ................ r66940 | georg.brandl | 2008-10-16 16:38:48 -0500 (Thu, 16 Oct 2008) | 2 lines #4083: add "as" to except handler grammar as per PEP 3110. ................ r66962 | benjamin.peterson | 2008-10-17 15:01:01 -0500 (Fri, 17 Oct 2008) | 1 line clarify CALL_FUNCTION #4141 ................ r66964 | georg.brandl | 2008-10-17 16:41:49 -0500 (Fri, 17 Oct 2008) | 2 lines Fix duplicate word. ................ r66973 | armin.ronacher | 2008-10-19 03:27:43 -0500 (Sun, 19 Oct 2008) | 3 lines Fixed #4067 by implementing _attributes and _fields for the AST root node. ................
2008-10-19 14:07:49 +00:00
empty_tuple = PyTuple_New(0);
if (!empty_tuple ||
PyObject_SetAttrString(state->AST_type, "_fields", empty_tuple) < 0 ||
PyObject_SetAttrString(state->AST_type, "_attributes", empty_tuple) < 0) {
Merged revisions 66887,66891,66902-66903,66905-66906,66911-66913,66922,66927-66928,66936,66939-66940,66962,66964,66973 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ................ r66887 | benjamin.peterson | 2008-10-13 16:51:40 -0500 (Mon, 13 Oct 2008) | 1 line document how to disable fixers ................ r66891 | amaury.forgeotdarc | 2008-10-14 16:47:22 -0500 (Tue, 14 Oct 2008) | 5 lines #4122: On Windows, Py_UNICODE_ISSPACE cannot be used in an extension module: compilation fails with "undefined reference to _Py_ascii_whitespace" Will backport to 2.6. ................ r66902 | skip.montanaro | 2008-10-15 06:49:10 -0500 (Wed, 15 Oct 2008) | 1 line easter egg ................ r66903 | benjamin.peterson | 2008-10-15 15:34:09 -0500 (Wed, 15 Oct 2008) | 1 line don't recurse into directories that start with '.' ................ r66905 | benjamin.peterson | 2008-10-15 16:05:55 -0500 (Wed, 15 Oct 2008) | 1 line support the optional line argument for idle ................ r66906 | benjamin.peterson | 2008-10-15 16:58:46 -0500 (Wed, 15 Oct 2008) | 1 line add a much requested newline ................ r66911 | benjamin.peterson | 2008-10-15 18:10:28 -0500 (Wed, 15 Oct 2008) | 41 lines Merged revisions 66805,66841,66860,66884-66886,66893,66907,66910 via svnmerge from svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3 ........ r66805 | benjamin.peterson | 2008-10-04 20:11:02 -0500 (Sat, 04 Oct 2008) | 1 line mention what the fixes directory is for ........ r66841 | benjamin.peterson | 2008-10-07 17:48:12 -0500 (Tue, 07 Oct 2008) | 1 line use assertFalse and assertTrue ........ r66860 | benjamin.peterson | 2008-10-08 16:05:07 -0500 (Wed, 08 Oct 2008) | 1 line instead of abusing the pattern matcher, use start_tree to find a next binding ........ r66884 | benjamin.peterson | 2008-10-13 15:50:30 -0500 (Mon, 13 Oct 2008) | 1 line don't print tokens to stdout when -v is given ........ r66885 | benjamin.peterson | 2008-10-13 16:28:57 -0500 (Mon, 13 Oct 2008) | 1 line add the -x option to disable fixers ........ r66886 | benjamin.peterson | 2008-10-13 16:33:53 -0500 (Mon, 13 Oct 2008) | 1 line cut down on some crud ........ r66893 | benjamin.peterson | 2008-10-14 17:16:54 -0500 (Tue, 14 Oct 2008) | 1 line add an optional set literal fixer ........ r66907 | benjamin.peterson | 2008-10-15 16:59:41 -0500 (Wed, 15 Oct 2008) | 1 line don't write backup files by default ........ r66910 | benjamin.peterson | 2008-10-15 17:43:10 -0500 (Wed, 15 Oct 2008) | 1 line add the -n option; it stops backupfiles from being written ........ ................ r66912 | hirokazu.yamamoto | 2008-10-16 01:25:25 -0500 (Thu, 16 Oct 2008) | 2 lines removed unused _PyUnicode_FromFileSystemEncodedObject. made win32_chdir, win32_wchdir static. ................ r66913 | benjamin.peterson | 2008-10-16 13:52:14 -0500 (Thu, 16 Oct 2008) | 1 line document that deque indexing is O(n) #4123 ................ r66922 | benjamin.peterson | 2008-10-16 14:40:14 -0500 (Thu, 16 Oct 2008) | 1 line use new showwarnings signature for idle #3391 ................ r66927 | andrew.kuchling | 2008-10-16 15:15:47 -0500 (Thu, 16 Oct 2008) | 1 line Fix wording (2.6.1 backport candidate) ................ r66928 | georg.brandl | 2008-10-16 15:20:56 -0500 (Thu, 16 Oct 2008) | 2 lines Add more TOC to the whatsnew index page. ................ r66936 | georg.brandl | 2008-10-16 16:20:15 -0500 (Thu, 16 Oct 2008) | 2 lines #4131: FF3 doesn't write cookies.txt files. ................ r66939 | georg.brandl | 2008-10-16 16:36:39 -0500 (Thu, 16 Oct 2008) | 2 lines part of #4012: kill off old name "processing". ................ r66940 | georg.brandl | 2008-10-16 16:38:48 -0500 (Thu, 16 Oct 2008) | 2 lines #4083: add "as" to except handler grammar as per PEP 3110. ................ r66962 | benjamin.peterson | 2008-10-17 15:01:01 -0500 (Fri, 17 Oct 2008) | 1 line clarify CALL_FUNCTION #4141 ................ r66964 | georg.brandl | 2008-10-17 16:41:49 -0500 (Fri, 17 Oct 2008) | 2 lines Fix duplicate word. ................ r66973 | armin.ronacher | 2008-10-19 03:27:43 -0500 (Sun, 19 Oct 2008) | 3 lines Fixed #4067 by implementing _attributes and _fields for the AST root node. ................
2008-10-19 14:07:49 +00:00
Py_XDECREF(empty_tuple);
return -1;
}
Py_DECREF(empty_tuple);
return 0;
}
""", 0, reflow=False)
self.file.write(textwrap.dedent('''
static int
init_types(struct ast_state *state)
{
// init_types() must not be called after _PyAST_Fini()
// has been called
assert(state->initialized >= 0);
if (state->initialized) {
return 1;
}
if (init_identifiers(state) < 0) {
return 0;
}
state->AST_type = PyType_FromSpec(&AST_type_spec);
if (!state->AST_type) {
return 0;
}
if (add_ast_fields(state) < 0) {
return 0;
}
'''))
for dfn in mod.dfns:
self.visit(dfn)
self.file.write(textwrap.dedent('''
state->initialized = 1;
return 1;
}
'''))
def visitProduct(self, prod, name):
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if prod.fields:
fields = name+"_fields"
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else:
fields = "NULL"
self.emit('state->%s_type = make_type(state, "%s", state->AST_type, %s, %d,' %
2006-02-26 23:40:20 +00:00
(name, name, fields, len(prod.fields)), 1)
self.emit('%s);' % reflow_c_string(asdl_of(name, prod), 2), 2, reflow=False)
self.emit("if (!state->%s_type) return 0;" % name, 1)
self.emit_type("AST_type")
self.emit_type("%s_type" % name)
if prod.attributes:
self.emit("if (!add_attributes(state, state->%s_type, %s_attributes, %d)) return 0;" %
(name, name, len(prod.attributes)), 1)
else:
self.emit("if (!add_attributes(state, state->%s_type, NULL, 0)) return 0;" % name, 1)
self.emit_defaults(name, prod.fields, 1)
self.emit_defaults(name, prod.attributes, 1)
2006-02-28 18:30:36 +00:00
def visitSum(self, sum, name):
self.emit('state->%s_type = make_type(state, "%s", state->AST_type, NULL, 0,' %
(name, name), 1)
self.emit('%s);' % reflow_c_string(asdl_of(name, sum), 2), 2, reflow=False)
self.emit_type("%s_type" % name)
self.emit("if (!state->%s_type) return 0;" % name, 1)
if sum.attributes:
self.emit("if (!add_attributes(state, state->%s_type, %s_attributes, %d)) return 0;" %
(name, name, len(sum.attributes)), 1)
else:
self.emit("if (!add_attributes(state, state->%s_type, NULL, 0)) return 0;" % name, 1)
self.emit_defaults(name, sum.attributes, 1)
simple = is_simple(sum)
for t in sum.types:
self.visitConstructor(t, name, simple)
2006-02-28 18:30:36 +00:00
def visitConstructor(self, cons, name, simple):
2006-02-26 23:40:20 +00:00
if cons.fields:
fields = cons.name+"_fields"
2006-02-26 23:40:20 +00:00
else:
fields = "NULL"
self.emit('state->%s_type = make_type(state, "%s", state->%s_type, %s, %d,' %
2006-02-26 23:40:20 +00:00
(cons.name, cons.name, name, fields, len(cons.fields)), 1)
self.emit('%s);' % reflow_c_string(asdl_of(cons.name, cons), 2), 2, reflow=False)
self.emit("if (!state->%s_type) return 0;" % cons.name, 1)
self.emit_type("%s_type" % cons.name)
self.emit_defaults(cons.name, cons.fields, 1)
if simple:
self.emit("state->%s_singleton = PyType_GenericNew((PyTypeObject *)"
"state->%s_type, NULL, NULL);" %
(cons.name, cons.name), 1)
self.emit("if (!state->%s_singleton) return 0;" % cons.name, 1)
2006-02-28 18:30:36 +00:00
def emit_defaults(self, name, fields, depth):
for field in fields:
if field.opt:
self.emit('if (PyObject_SetAttr(state->%s_type, state->%s, Py_None) == -1)' %
(name, field.name), depth)
self.emit("return 0;", depth+1)
class ASTModuleVisitor(PickleVisitor):
def visitModule(self, mod):
self.emit("static int", 0)
self.emit("astmodule_exec(PyObject *m)", 0)
self.emit("{", 0)
self.emit('struct ast_state *state = get_ast_state();', 1)
self.emit('if (state == NULL) {', 1)
self.emit('return -1;', 2)
self.emit('}', 1)
self.emit('if (PyModule_AddObjectRef(m, "AST", state->AST_type) < 0) {', 1)
self.emit('return -1;', 2)
self.emit('}', 1)
self.emit('if (PyModule_AddIntMacro(m, PyCF_ALLOW_TOP_LEVEL_AWAIT) < 0) {', 1)
self.emit("return -1;", 2)
self.emit('}', 1)
self.emit('if (PyModule_AddIntMacro(m, PyCF_ONLY_AST) < 0) {', 1)
self.emit("return -1;", 2)
self.emit('}', 1)
self.emit('if (PyModule_AddIntMacro(m, PyCF_TYPE_COMMENTS) < 0) {', 1)
self.emit("return -1;", 2)
self.emit('}', 1)
for dfn in mod.dfns:
self.visit(dfn)
self.emit("return 0;", 1)
self.emit("}", 0)
self.emit("", 0)
self.emit("""
static PyModuleDef_Slot astmodule_slots[] = {
{Py_mod_exec, astmodule_exec},
{0, NULL}
};
static struct PyModuleDef _astmodule = {
PyModuleDef_HEAD_INIT,
.m_name = "_ast",
// The _ast module uses a per-interpreter state (PyInterpreterState.ast)
.m_size = 0,
.m_slots = astmodule_slots,
};
PyMODINIT_FUNC
PyInit__ast(void)
{
return PyModuleDef_Init(&_astmodule);
}
""".strip(), 0, reflow=False)
def visitProduct(self, prod, name):
self.addObj(name)
2006-02-28 18:30:36 +00:00
def visitSum(self, sum, name):
self.addObj(name)
for t in sum.types:
self.visitConstructor(t, name)
2006-02-28 18:30:36 +00:00
def visitConstructor(self, cons, name):
self.addObj(cons.name)
2006-02-28 18:30:36 +00:00
def addObj(self, name):
self.emit("if (PyModule_AddObjectRef(m, \"%s\", "
"state->%s_type) < 0) {" % (name, name), 1)
self.emit("return -1;", 2)
self.emit('}', 1)
class StaticVisitor(PickleVisitor):
CODE = '''Very simple, always emit this static code. Override CODE'''
def visit(self, object):
self.emit(self.CODE, 0, reflow=False)
class ObjVisitor(PickleVisitor):
def func_begin(self, name):
ctype = get_c_type(name)
self.emit("PyObject*", 0)
self.emit("ast2obj_%s(struct ast_state *state, void* _o)" % (name), 0)
self.emit("{", 0)
self.emit("%s o = (%s)_o;" % (ctype, ctype), 1)
self.emit("PyObject *result = NULL, *value = NULL;", 1)
self.emit("PyTypeObject *tp;", 1)
self.emit('if (!o) {', 1)
self.emit("Py_RETURN_NONE;", 2)
self.emit("}", 1)
def func_end(self):
self.emit("return result;", 1)
self.emit("failed:", 0)
self.emit("Py_XDECREF(value);", 1)
self.emit("Py_XDECREF(result);", 1)
self.emit("return NULL;", 1)
self.emit("}", 0)
self.emit("", 0)
def visitSum(self, sum, name):
if is_simple(sum):
self.simpleSum(sum, name)
return
self.func_begin(name)
self.emit("switch (o->kind) {", 1)
for i in range(len(sum.types)):
t = sum.types[i]
self.visitConstructor(t, i + 1, name)
self.emit("}", 1)
for a in sum.attributes:
self.emit("value = ast2obj_%s(state, o->%s);" % (a.type, a.name), 1)
self.emit("if (!value) goto failed;", 1)
self.emit('if (PyObject_SetAttr(result, state->%s, value) < 0)' % a.name, 1)
2006-03-02 00:31:27 +00:00
self.emit('goto failed;', 2)
self.emit('Py_DECREF(value);', 1)
self.func_end()
2006-02-28 18:30:36 +00:00
def simpleSum(self, sum, name):
self.emit("PyObject* ast2obj_%s(struct ast_state *state, %s_ty o)" % (name, name), 0)
self.emit("{", 0)
self.emit("switch(o) {", 1)
for t in sum.types:
self.emit("case %s:" % t.name, 2)
self.emit("Py_INCREF(state->%s_singleton);" % t.name, 3)
self.emit("return state->%s_singleton;" % t.name, 3)
self.emit("}", 1)
self.emit("Py_UNREACHABLE();", 1);
self.emit("}", 0)
def visitProduct(self, prod, name):
self.func_begin(name)
self.emit("tp = (PyTypeObject *)state->%s_type;" % name, 1)
self.emit("result = PyType_GenericNew(tp, NULL, NULL);", 1);
self.emit("if (!result) return NULL;", 1)
for field in prod.fields:
self.visitField(field, name, 1, True)
for a in prod.attributes:
self.emit("value = ast2obj_%s(state, o->%s);" % (a.type, a.name), 1)
self.emit("if (!value) goto failed;", 1)
self.emit("if (PyObject_SetAttr(result, state->%s, value) < 0)" % a.name, 1)
self.emit('goto failed;', 2)
self.emit('Py_DECREF(value);', 1)
self.func_end()
2005-12-25 23:18:31 +00:00
def visitConstructor(self, cons, enum, name):
self.emit("case %s_kind:" % cons.name, 1)
self.emit("tp = (PyTypeObject *)state->%s_type;" % cons.name, 2)
self.emit("result = PyType_GenericNew(tp, NULL, NULL);", 2);
self.emit("if (!result) goto failed;", 2)
for f in cons.fields:
self.visitField(f, cons.name, 2, False)
self.emit("break;", 2)
def visitField(self, field, name, depth, product):
def emit(s, d):
self.emit(s, depth + d)
if product:
value = "o->%s" % field.name
else:
value = "o->v.%s.%s" % (name, field.name)
self.set(field, value, depth)
emit("if (!value) goto failed;", 0)
emit("if (PyObject_SetAttr(result, state->%s, value) == -1)" % field.name, 0)
emit("goto failed;", 1)
emit("Py_DECREF(value);", 0)
def set(self, field, value, depth):
if field.seq:
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# XXX should really check for is_simple, but that requires a symbol table
if field.type == "cmpop":
2006-02-26 20:51:25 +00:00
# While the sequence elements are stored as void*,
# ast2obj_cmpop expects an enum
self.emit("{", depth)
self.emit("Py_ssize_t i, n = asdl_seq_LEN(%s);" % value, depth+1)
2006-02-26 20:51:25 +00:00
self.emit("value = PyList_New(n);", depth+1)
self.emit("if (!value) goto failed;", depth+1)
self.emit("for(i = 0; i < n; i++)", depth+1)
# This cannot fail, so no need for error handling
self.emit("PyList_SET_ITEM(value, i, ast2obj_cmpop(state, (cmpop_ty)asdl_seq_GET(%s, i)));" % value,
depth+2, reflow=False)
2006-02-26 20:51:25 +00:00
self.emit("}", depth)
else:
self.emit("value = ast2obj_list(state, (asdl_seq*)%s, ast2obj_%s);" % (value, field.type), depth)
else:
self.emit("value = ast2obj_%s(state, %s);" % (field.type, value), depth, reflow=False)
2005-12-25 23:18:31 +00:00
class PartingShots(StaticVisitor):
CODE = """
PyObject* PyAST_mod2obj(mod_ty t)
{
struct ast_state *state = get_ast_state();
if (state == NULL) {
return NULL;
}
return ast2obj_mod(state, t);
}
/* mode is 0 for "exec", 1 for "eval" and 2 for "single" input */
mod_ty PyAST_obj2mod(PyObject* ast, PyArena* arena, int mode)
{
const char * const req_name[] = {"Module", "Expression", "Interactive"};
int isinstance;
if (PySys_Audit("compile", "OO", ast, Py_None) < 0) {
return NULL;
}
struct ast_state *state = get_ast_state();
if (state == NULL) {
return NULL;
}
PyObject *req_type[3];
req_type[0] = state->Module_type;
req_type[1] = state->Expression_type;
req_type[2] = state->Interactive_type;
assert(0 <= mode && mode <= 2);
isinstance = PyObject_IsInstance(ast, req_type[mode]);
if (isinstance == -1)
return NULL;
if (!isinstance) {
PyErr_Format(PyExc_TypeError, "expected %s node, got %.400s",
req_name[mode], _PyType_Name(Py_TYPE(ast)));
return NULL;
}
mod_ty res = NULL;
if (obj2ast_mod(state, ast, &res, arena) != 0)
return NULL;
else
return res;
}
int PyAST_Check(PyObject* obj)
{
struct ast_state *state = get_ast_state();
if (state == NULL) {
return -1;
}
return PyObject_IsInstance(obj, state->AST_type);
}
"""
class ChainOfVisitors:
def __init__(self, *visitors):
self.visitors = visitors
def visit(self, object):
for v in self.visitors:
v.visit(object)
v.emit("", 0)
def generate_ast_state(module_state, f):
f.write('struct ast_state {\n')
f.write(' int initialized;\n')
for s in module_state:
f.write(' PyObject *' + s + ';\n')
f.write('};')
def generate_ast_fini(module_state, f):
f.write(textwrap.dedent("""
void _PyAST_Fini(PyInterpreterState *interp)
{
#ifdef Py_BUILD_CORE
struct ast_state *state = &interp->ast;
#else
struct ast_state *state = &global_ast_state;
#endif
"""))
for s in module_state:
f.write(" Py_CLEAR(state->" + s + ');\n')
f.write(textwrap.dedent("""
#if defined(Py_BUILD_CORE) && !defined(NDEBUG)
state->initialized = -1;
#else
state->initialized = 0;
#endif
}
"""))
def generate_module_def(mod, f, internal_h):
# Gather all the data needed for ModuleSpec
visitor_list = set()
with open(os.devnull, "w") as devnull:
visitor = PyTypesDeclareVisitor(devnull)
visitor.visit(mod)
visitor_list.add(visitor)
visitor = PyTypesVisitor(devnull)
visitor.visit(mod)
visitor_list.add(visitor)
state_strings = {
"ast",
"_fields",
"__doc__",
"__dict__",
"__module__",
"_attributes",
}
module_state = state_strings.copy()
for visitor in visitor_list:
for identifier in visitor.identifiers:
module_state.add(identifier)
state_strings.add(identifier)
for singleton in visitor.singletons:
module_state.add(singleton)
for tp in visitor.types:
module_state.add(tp)
state_strings = sorted(state_strings)
module_state = sorted(module_state)
generate_ast_state(module_state, internal_h)
print(textwrap.dedent(f"""
#ifdef Py_BUILD_CORE
# include "pycore_ast.h" // struct ast_state
# include "pycore_interp.h" // _PyInterpreterState.ast
# include "pycore_pystate.h" // _PyInterpreterState_GET()
#else
""").strip(), file=f)
generate_ast_state(module_state, f)
print(textwrap.dedent(f"""
#endif // Py_BUILD_CORE
""").rstrip(), file=f)
f.write("""
// Forward declaration
static int init_types(struct ast_state *state);
#ifdef Py_BUILD_CORE
static struct ast_state*
get_ast_state(void)
{
PyInterpreterState *interp = _PyInterpreterState_GET();
struct ast_state *state = &interp->ast;
if (!init_types(state)) {
return NULL;
}
return state;
}
#else
static struct ast_state global_ast_state;
static struct ast_state*
get_ast_state(void)
{
struct ast_state *state = &global_ast_state;
if (!init_types(state)) {
return NULL;
}
return state;
}
#endif // Py_BUILD_CORE
""")
# f-string for {mod.name}
f.write(f"""
// Include {mod.name}-ast.h after pycore_interp.h to avoid conflicts
// with the Yield macro redefined by <winbase.h>
#include "{mod.name}-ast.h"
#include "structmember.h"
""")
generate_ast_fini(module_state, f)
f.write('static int init_identifiers(struct ast_state *state)\n')
f.write('{\n')
for identifier in state_strings:
f.write(' if ((state->' + identifier)
f.write(' = PyUnicode_InternFromString("')
f.write(identifier + '")) == NULL) return 0;\n')
f.write(' return 1;\n')
f.write('};\n\n')
def write_header(mod, f):
f.write('#ifndef Py_PYTHON_AST_H\n')
f.write('#define Py_PYTHON_AST_H\n')
f.write('#ifdef __cplusplus\n')
f.write('extern "C" {\n')
f.write('#endif\n')
f.write('\n')
f.write('#ifndef Py_LIMITED_API\n')
f.write('#include "asdl.h"\n')
f.write('\n')
f.write('#undef Yield /* undefine macro conflicting with <winbase.h> */\n')
f.write('\n')
c = ChainOfVisitors(TypeDefVisitor(f),
SequenceDefVisitor(f),
StructVisitor(f))
c.visit(mod)
f.write("// Note: these macros affect function definitions, not only call sites.\n")
PrototypeVisitor(f).visit(mod)
f.write("\n")
f.write("PyObject* PyAST_mod2obj(mod_ty t);\n")
f.write("mod_ty PyAST_obj2mod(PyObject* ast, PyArena* arena, int mode);\n")
f.write("int PyAST_Check(PyObject* obj);\n")
f.write("#endif /* !Py_LIMITED_API */\n")
f.write('\n')
f.write('#ifdef __cplusplus\n')
f.write('}\n')
f.write('#endif\n')
f.write('#endif /* !Py_PYTHON_AST_H */\n')
def write_internal_h_header(mod, f):
print(textwrap.dedent("""
#ifndef Py_INTERNAL_AST_H
#define Py_INTERNAL_AST_H
#ifdef __cplusplus
extern "C" {
#endif
#ifndef Py_BUILD_CORE
# error "this header requires Py_BUILD_CORE define"
#endif
""").lstrip(), file=f)
def write_internal_h_footer(mod, f):
print(textwrap.dedent("""
#ifdef __cplusplus
}
#endif
#endif /* !Py_INTERNAL_AST_H */
"""), file=f)
def write_source(mod, f, internal_h_file):
print(textwrap.dedent(f"""
#include <stddef.h>
#include "Python.h"
"""), file=f)
generate_module_def(mod, f, internal_h_file)
v = ChainOfVisitors(
SequenceConstructorVisitor(f),
PyTypesDeclareVisitor(f),
PyTypesVisitor(f),
Obj2ModPrototypeVisitor(f),
FunctionVisitor(f),
ObjVisitor(f),
Obj2ModVisitor(f),
ASTModuleVisitor(f),
PartingShots(f),
)
v.visit(mod)
def main(input_filename, c_filename, h_filename, internal_h_filename, dump_module=False):
auto_gen_msg = AUTOGEN_MESSAGE.format("/".join(Path(__file__).parts[-2:]))
mod = asdl.parse(input_filename)
if dump_module:
print('Parsed Module:')
print(mod)
if not asdl.check(mod):
sys.exit(1)
with c_filename.open("w") as c_file, \
h_filename.open("w") as h_file, \
internal_h_filename.open("w") as internal_h_file:
c_file.write(auto_gen_msg)
h_file.write(auto_gen_msg)
internal_h_file.write(auto_gen_msg)
write_internal_h_header(mod, internal_h_file)
write_source(mod, c_file, internal_h_file)
write_header(mod, h_file)
write_internal_h_footer(mod, internal_h_file)
print(f"{c_filename}, {h_filename}, {internal_h_filename} regenerated.")
if __name__ == "__main__":
parser = ArgumentParser()
parser.add_argument("input_file", type=Path)
parser.add_argument("-C", "--c-file", type=Path, required=True)
parser.add_argument("-H", "--h-file", type=Path, required=True)
parser.add_argument("-I", "--internal-h-file", type=Path, required=True)
parser.add_argument("-d", "--dump-module", action="store_true")
args = parser.parse_args()
main(args.input_file, args.c_file, args.h_file,
args.internal_h_file, args.dump_module)