2 # GObject-Introspection - a framework for introspecting GObject libraries
3 # Copyright (C) 2008 Johan Dahlin
5 # This library is free software; you can redistribute it and/or
6 # modify it under the terms of the GNU Lesser General Public
7 # License as published by the Free Software Foundation; either
8 # version 2 of the License, or (at your option) any later version.
10 # This library is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 # Lesser General Public License for more details.
15 # You should have received a copy of the GNU Lesser General Public
16 # License along with this library; if not, write to the
17 # Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 # Boston, MA 02111-1307, USA.
28 from .cachestore import CacheStore
29 from .girparser import GIRParser
30 from .sourcescanner import (
31 SourceSymbol, ctype_name, CTYPE_POINTER,
32 CTYPE_BASIC_TYPE, CTYPE_UNION, CTYPE_ARRAY, CTYPE_TYPEDEF,
33 CTYPE_VOID, CTYPE_ENUM, CTYPE_FUNCTION, CTYPE_STRUCT,
34 CSYMBOL_TYPE_FUNCTION, CSYMBOL_TYPE_TYPEDEF, CSYMBOL_TYPE_STRUCT,
35 CSYMBOL_TYPE_ENUM, CSYMBOL_TYPE_UNION, CSYMBOL_TYPE_OBJECT,
36 CSYMBOL_TYPE_MEMBER, CSYMBOL_TYPE_ELLIPSIS, CSYMBOL_TYPE_CONST,
37 TYPE_QUALIFIER_CONST, TYPE_QUALIFIER_VOLATILE)
40 class TransformerException(Exception):
44 class Transformer(object):
45 namespace = property(lambda self: self._namespace)
47 def __init__(self, namespace, accept_unprefixed=False,
48 identifier_filter_cmd=None, symbol_filter_cmd=None):
49 self._cachestore = CacheStore()
50 self._accept_unprefixed = accept_unprefixed
51 self._namespace = namespace
52 self._pkg_config_packages = set()
53 self._typedefs_ns = {}
54 self._parsed_includes = {} # <string namespace -> Namespace>
55 self._includepaths = []
56 self._passthrough_mode = False
57 self._identifier_filter_cmd = identifier_filter_cmd
58 self._symbol_filter_cmd = symbol_filter_cmd
60 # Cache a list of struct/unions in C's "tag namespace". This helps
61 # manage various orderings of typedefs and structs. See:
62 # https://bugzilla.gnome.org/show_bug.cgi?id=581525
65 def get_pkgconfig_packages(self):
66 return self._pkg_config_packages
68 def disable_cache(self):
69 self._cachestore = None
71 def set_passthrough_mode(self):
72 self._passthrough_mode = True
74 def _append_new_node(self, node):
75 original = self._namespace.get(node.name)
76 # Special case constants here; we allow duplication to sort-of
77 # handle #ifdef. But this introduces an arch-dependency in the .gir
78 # file. So far this has only come up scanning glib - in theory, other
79 # modules will just depend on that.
80 if isinstance(original, ast.Constant) and isinstance(node, ast.Constant):
82 elif original is node:
83 # Ignore attempts to add the same node to the namespace. This can
84 # happen when parsing typedefs and structs in particular orderings:
85 # typedef struct _Foo Foo;
90 positions.update(original.file_positions)
91 positions.update(node.file_positions)
92 message.fatal("Namespace conflict for '%s'" % (node.name, ),
95 self._namespace.append(node)
97 def parse(self, symbols):
98 for symbol in symbols:
100 # https://bugzilla.gnome.org/show_bug.cgi?id=550616
101 if symbol.ident in ['gst_g_error_get_type']:
105 node = self._traverse_one(symbol)
106 except TransformerException as e:
107 message.warn_symbol(symbol, e)
110 if node and node.name:
111 self._append_new_node(node)
112 if isinstance(node, ast.Compound) and node.tag_name and \
113 node.tag_name not in self._tag_ns:
114 self._tag_ns[node.tag_name] = node
116 # Run through the tag namespace looking for structs that have not been
117 # promoted into the main namespace. In this case we simply promote them
118 # with their struct tag.
119 for tag_name, struct in self._tag_ns.items():
122 name = self.strip_identifier(tag_name)
124 self._append_new_node(struct)
125 except TransformerException as e:
126 message.warn_node(node, e)
128 def set_include_paths(self, paths):
129 self._includepaths = list(paths)
131 def register_include(self, include):
132 if include in self._namespace.includes:
134 self._namespace.includes.add(include)
135 filename = self._find_include(include)
136 self._parse_include(filename)
138 def register_include_uninstalled(self, include_path):
139 basename = os.path.basename(include_path)
140 if not basename.endswith('.gir'):
141 raise SystemExit("Include path '%s' must be a filename path "
142 "ending in .gir" % (include_path, ))
143 girname = basename[:-4]
144 include = ast.Include.from_string(girname)
145 if include in self._namespace.includes:
147 self._namespace.includes.add(include)
148 self._parse_include(include_path, uninstalled=True)
150 def lookup_giname(self, name):
151 """Given a name of the form Foo or Bar.Foo,
152 return the corresponding ast.Node, or None if none
153 available. Will throw KeyError however for unknown
156 return self._namespace.get(name)
158 (ns, giname) = name.split('.', 1)
159 if ns == self._namespace.name:
160 return self._namespace.get(giname)
161 # Fallback to the main namespace if not a dependency and matches a prefix
162 if ns in self._namespace.identifier_prefixes and ns not in self._parsed_includes:
163 message.warn(("Deprecated reference to identifier " +
164 "prefix %s in GIName %s") % (ns, name))
165 return self._namespace.get(giname)
166 include = self._parsed_includes[ns]
167 return include.get(giname)
169 def lookup_typenode(self, typeobj):
170 """Given a Type object, if it points to a giname,
171 calls lookup_giname() on the name. Otherwise return
173 if typeobj.target_giname:
174 return self.lookup_giname(typeobj.target_giname)
179 def _get_gi_data_dirs(self):
180 data_dirs = utils.get_system_data_dirs()
181 data_dirs.append(DATADIR)
182 data_dirs.append(GIRDIR)
184 # For backwards compatibility, was always unconditionally added to the list.
185 data_dirs.append('/usr/share')
188 def _find_include(self, include):
189 searchdirs = self._includepaths[:]
190 for path in self._get_gi_data_dirs():
191 searchdirs.append(os.path.join(path, 'gir-1.0'))
192 searchdirs.append(os.path.join(DATADIR, 'gir-1.0'))
194 girname = '%s-%s.gir' % (include.name, include.version)
196 path = os.path.join(d, girname)
197 if os.path.exists(path):
199 sys.stderr.write("Couldn't find include '%s' (search path: '%s')\n" %
200 (girname, searchdirs))
204 def parse_from_gir(cls, filename, extra_include_dirs=None):
206 if extra_include_dirs is not None:
207 self.set_include_paths(extra_include_dirs)
208 self.set_passthrough_mode()
209 parser = self._parse_include(filename)
210 self._namespace = parser.get_namespace()
211 del self._parsed_includes[self._namespace.name]
214 def _parse_include(self, filename, uninstalled=False):
216 if self._cachestore is not None:
217 parser = self._cachestore.load(filename)
219 parser = GIRParser(types_only=not self._passthrough_mode)
220 parser.parse(filename)
221 if self._cachestore is not None:
222 self._cachestore.store(filename, parser)
224 for include in parser.get_namespace().includes:
225 if include.name not in self._parsed_includes:
226 dep_filename = self._find_include(include)
227 self._parse_include(dep_filename)
230 for pkg in parser.get_namespace().exported_packages:
231 self._pkg_config_packages.add(pkg)
232 namespace = parser.get_namespace()
233 self._parsed_includes[namespace.name] = namespace
236 def _iter_namespaces(self):
237 """Return an iterator over all included namespaces; the
238 currently-scanned namespace is first."""
239 yield self._namespace
240 for ns in self._parsed_includes.values():
243 def _sort_matches(self, val):
244 """Key sort which ensures items in self._namespace are last by returning
245 a tuple key starting with 1 for self._namespace entries and 0 for
248 if val[0] == self._namespace:
253 def _split_c_string_for_namespace_matches(self, name, is_identifier=False):
254 if not is_identifier and self._symbol_filter_cmd:
255 proc = subprocess.Popen(self._symbol_filter_cmd,
256 stdin=subprocess.PIPE,
257 stdout=subprocess.PIPE,
258 stderr=subprocess.PIPE)
259 proc_name, err = proc.communicate(name.encode())
260 proc_name = proc_name.strip()
262 raise ValueError('filter: %r exited: %d with error: %s' %
263 (self._symbol_filter_cmd, proc.returncode, err))
264 name = proc_name.decode('ascii')
267 matches = [] # Namespaces which might contain this name
268 unprefixed_namespaces = [] # Namespaces with no prefix, last resort
269 for ns in self._iter_namespaces():
271 prefixes = ns.identifier_prefixes
272 elif name[0].isupper():
273 prefixes = ns._ucase_symbol_prefixes
275 prefixes = ns.symbol_prefixes
277 for prefix in prefixes:
278 if (not is_identifier) and (not prefix.endswith('_')):
279 prefix = prefix + '_'
280 if name.startswith(prefix):
281 matches.append((ns, name[len(prefix):], len(prefix)))
284 unprefixed_namespaces.append(ns)
286 matches.sort(key=self._sort_matches)
287 return list(map(lambda x: (x[0], x[1]), matches))
288 elif self._accept_unprefixed:
289 return [(self._namespace, name)]
290 elif unprefixed_namespaces:
291 # A bit of a hack; this function ideally shouldn't look through the
292 # contents of namespaces; but since we aren't scanning anything
293 # without a prefix, it's not too bad.
294 for ns in unprefixed_namespaces:
297 raise ValueError("Unknown namespace for %s '%s'"
298 % ('identifier' if is_identifier else 'symbol', name, ))
300 def split_ctype_namespaces(self, ident):
301 """Given a StudlyCaps string identifier like FooBar, return a
302 list of (namespace, stripped_identifier) sorted by namespace length,
303 or raise ValueError. As a special case, if the current namespace matches,
304 it is always biggest (i.e. last)."""
305 return self._split_c_string_for_namespace_matches(ident, is_identifier=True)
307 def split_csymbol_namespaces(self, symbol):
308 """Given a C symbol like foo_bar_do_baz, return a list of
309 (namespace, stripped_symbol) sorted by namespace match probablity, or
311 return self._split_c_string_for_namespace_matches(symbol, is_identifier=False)
313 def split_csymbol(self, symbol):
314 """Given a C symbol like foo_bar_do_baz, return the most probable
315 (namespace, stripped_symbol) match, or raise ValueError."""
316 matches = self._split_c_string_for_namespace_matches(symbol, is_identifier=False)
319 def strip_identifier(self, ident):
320 if self._identifier_filter_cmd:
321 proc = subprocess.Popen(self._identifier_filter_cmd,
322 stdin=subprocess.PIPE,
323 stdout=subprocess.PIPE,
324 stderr=subprocess.PIPE)
325 proc_ident, err = proc.communicate(ident.encode())
327 raise ValueError('filter: %r exited: %d with error: %s' %
328 (self._identifier_filter_cmd, proc.returncode, err))
329 ident = proc_ident.decode('ascii').strip()
331 hidden = ident.startswith('_')
335 matches = self.split_ctype_namespaces(ident)
336 except ValueError as e:
337 raise TransformerException(str(e))
338 for ns, name in matches:
339 if ns is self._namespace:
343 (ns, name) = matches[-1]
344 raise TransformerException(
345 "Skipping foreign identifier '%s' from namespace %s" % (ident, ns.name, ))
348 def _strip_symbol(self, symbol):
350 hidden = ident.startswith('_')
354 (ns, name) = self.split_csymbol(ident)
355 except ValueError as e:
356 raise TransformerException(str(e))
357 if ns != self._namespace:
358 raise TransformerException(
359 "Skipping foreign symbol from namespace %s" % (ns.name, ))
364 def _traverse_one(self, symbol, stype=None, parent_symbol=None):
365 assert isinstance(symbol, SourceSymbol), symbol
369 if stype == CSYMBOL_TYPE_FUNCTION:
370 return self._create_function(symbol)
371 elif stype == CSYMBOL_TYPE_TYPEDEF:
372 return self._create_typedef(symbol)
373 elif stype == CSYMBOL_TYPE_STRUCT:
374 return self._create_tag_ns_compound(ast.Record, symbol)
375 elif stype == CSYMBOL_TYPE_ENUM:
376 return self._create_enum(symbol)
377 elif stype == CSYMBOL_TYPE_MEMBER:
378 return self._create_member(symbol, parent_symbol)
379 elif stype == CSYMBOL_TYPE_UNION:
380 return self._create_tag_ns_compound(ast.Union, symbol)
381 elif stype == CSYMBOL_TYPE_CONST:
382 return self._create_const(symbol)
383 # Ignore variable declarations in the header
384 elif stype == CSYMBOL_TYPE_OBJECT:
387 print("transformer: unhandled symbol: '%s'" % (symbol, ))
389 def _enum_common_prefix(self, symbol):
390 def common_prefix(a, b):
392 for aword, bword in zip(a.split('_'), b.split('_')):
394 return '_'.join(commonparts) + '_'
395 commonparts.append(aword)
398 # Nothing less than 2 has a common prefix
399 if len(list(symbol.base_type.child_list)) < 2:
402 for child in symbol.base_type.child_list:
406 prefix = common_prefix(prefix, child.ident)
411 def _create_enum(self, symbol):
412 prefix = self._enum_common_prefix(symbol)
414 prefixlen = len(prefix)
418 for child in symbol.base_type.child_list:
422 name = child.ident[prefixlen:]
424 # Ok, the enum members don't have a consistent prefix
425 # among them, so let's just remove the global namespace
427 name = self._strip_symbol(child)
428 members.append(ast.Member(name.lower(),
433 enum_name = self.strip_identifier(symbol.ident)
434 if symbol.base_type.is_bitfield:
438 node = klass(enum_name, symbol.ident, members=members)
439 node.add_symbol_reference(symbol)
442 def _create_function(self, symbol):
443 # Drop functions that start with _ very early on here
444 if symbol.ident.startswith('_'):
446 parameters = list(self._create_parameters(symbol, symbol.base_type))
447 return_ = self._create_return(symbol.base_type.base_type)
448 name = self._strip_symbol(symbol)
449 func = ast.Function(name, return_, parameters, False, symbol.ident)
450 func.add_symbol_reference(symbol)
453 def _create_source_type(self, source_type, is_parameter=False):
454 assert source_type is not None
455 if source_type.type == CTYPE_VOID:
457 elif source_type.type == CTYPE_BASIC_TYPE:
458 value = source_type.name
459 elif source_type.type == CTYPE_TYPEDEF:
460 value = source_type.name
461 elif (source_type.type == CTYPE_POINTER or
462 # Array to pointer adjustment as per 6.7.6.3.
463 # This is performed only on the outermost array,
464 # so we don't forward is_parameter.
465 (source_type.type == CTYPE_ARRAY and is_parameter)):
466 value = self._create_source_type(source_type.base_type) + '*'
467 elif source_type.type == CTYPE_ARRAY:
468 return self._create_source_type(source_type.base_type)
473 def _create_complete_source_type(self, source_type, is_parameter=False):
474 assert source_type is not None
476 const = (source_type.type_qualifier & TYPE_QUALIFIER_CONST)
477 volatile = (source_type.type_qualifier & TYPE_QUALIFIER_VOLATILE)
479 if source_type.type == CTYPE_VOID:
481 elif source_type.type in [CTYPE_BASIC_TYPE,
486 value = source_type.name
490 value = 'const ' + value
492 value = 'volatile ' + value
494 elif (source_type.type == CTYPE_POINTER or
495 # Array to pointer adjustment as per 6.7.6.3.
496 # This is performed only on the outermost array,
497 # so we don't forward is_parameter.
498 (source_type.type == CTYPE_ARRAY and is_parameter)):
499 value = self._create_complete_source_type(source_type.base_type) + '*'
500 # TODO: handle pointer to function as a special case?
506 elif source_type.type == CTYPE_ARRAY:
507 return self._create_complete_source_type(source_type.base_type)
510 value = 'gconstpointer'
514 value = 'volatile ' + value
517 def _create_parameters(self, symbol, base_type):
518 for i, child in enumerate(base_type.child_list):
519 yield self._create_parameter(symbol, i, child)
521 def _synthesize_union_type(self, symbol, parent_symbol):
522 # Synthesize a named union so that it can be referenced.
523 parent_ident = parent_symbol.ident
524 # FIXME: Should split_ctype_namespaces handle the hidden case?
525 hidden = parent_ident.startswith('_')
527 parent_ident = parent_ident[1:]
528 matches = self.split_ctype_namespaces(parent_ident)
529 (namespace, parent_name) = matches[-1]
530 assert namespace and parent_name
532 parent_name = '_' + parent_name
533 fake_union = ast.Union("%s__%s__union" % (parent_name, symbol.ident))
534 # _parse_fields accesses <type>.base_type.child_list, so we have to
535 # pass symbol.base_type even though that refers to the array, not the
537 self._parse_fields(symbol.base_type, fake_union)
538 self._append_new_node(fake_union)
539 fake_type = ast.Type(
540 target_giname="%s.%s" % (namespace.name, fake_union.name))
543 def _create_member(self, symbol, parent_symbol=None):
544 source_type = symbol.base_type
545 if (source_type.type == CTYPE_POINTER
546 and symbol.base_type.base_type.type == CTYPE_FUNCTION):
547 node = self._create_callback(symbol, member=True)
548 elif source_type.type == CTYPE_STRUCT and source_type.name is None:
549 node = self._create_member_compound(ast.Record, symbol)
550 elif source_type.type == CTYPE_UNION and source_type.name is None:
551 node = self._create_member_compound(ast.Union, symbol)
553 # Special handling for fields; we don't have annotations on them
554 # to apply later, yet.
555 if source_type.type == CTYPE_ARRAY:
556 complete_ctype = self._create_complete_source_type(source_type)
557 # If the array contains anonymous unions, like in the GValue
558 # struct, we need to handle this specially. This is necessary
559 # to be able to properly calculate the size of the compound
560 # type (e.g. GValue) that contains this array, see
561 # <https://bugzilla.gnome.org/show_bug.cgi?id=657040>.
562 if (source_type.base_type.type == CTYPE_UNION
563 and source_type.base_type.name is None):
564 synthesized_type = self._synthesize_union_type(symbol, parent_symbol)
565 ftype = ast.Array(None, synthesized_type, complete_ctype=complete_ctype)
567 ctype = self._create_source_type(source_type)
568 canonical_ctype = self._canonicalize_ctype(ctype)
569 if canonical_ctype[-1] == '*':
570 derefed_name = canonical_ctype[:-1]
572 derefed_name = canonical_ctype
573 if complete_ctype[-1] == '*':
574 derefed_complete_ctype = complete_ctype[:-1]
576 derefed_complete_ctype = complete_ctype
577 from_ctype = self.create_type_from_ctype_string(ctype,
578 complete_ctype=complete_ctype)
579 ftype = ast.Array(None, from_ctype,
581 complete_ctype=derefed_complete_ctype)
582 child_list = list(symbol.base_type.child_list)
583 ftype.zeroterminated = False
585 ftype.size = child_list[0].const_int
587 ftype = self._create_type_from_base(symbol.base_type)
588 # ast.Fields are assumed to be read-write
589 # (except for Objects, see also glibtransformer.py)
590 node = ast.Field(symbol.ident, ftype,
591 readable=True, writable=True,
592 bits=symbol.const_int)
594 node.readable = False
595 node.writable = False
599 def _create_typedef(self, symbol):
600 ctype = symbol.base_type.type
601 if (ctype == CTYPE_POINTER and symbol.base_type.base_type.type == CTYPE_FUNCTION):
602 node = self._create_typedef_callback(symbol)
603 elif (ctype == CTYPE_FUNCTION):
604 node = self._create_typedef_callback(symbol)
605 elif (ctype == CTYPE_POINTER and symbol.base_type.base_type.type == CTYPE_STRUCT):
606 node = self._create_typedef_compound(ast.Record, symbol, disguised=True)
607 elif ctype == CTYPE_STRUCT:
608 node = self._create_typedef_compound(ast.Record, symbol)
609 elif ctype == CTYPE_UNION:
610 node = self._create_typedef_compound(ast.Union, symbol)
611 elif ctype == CTYPE_ENUM:
612 return self._create_enum(symbol)
613 elif ctype in (CTYPE_TYPEDEF,
617 name = self.strip_identifier(symbol.ident)
618 target = self._create_type_from_base(symbol.base_type)
619 if name in ast.type_names:
621 # https://bugzilla.gnome.org/show_bug.cgi?id=755882
622 if name.endswith('_autoptr'):
624 node = ast.Alias(name, target, ctype=symbol.ident)
625 node.add_symbol_reference(symbol)
627 raise NotImplementedError(
628 "symbol '%s' of type %s" % (symbol.ident, ctype_name(ctype)))
631 def _canonicalize_ctype(self, ctype):
632 # First look up the ctype including any pointers;
633 # a few type names like 'char*' have their own aliases
634 # and we need pointer information for those.
635 firstpass = ast.type_names.get(ctype)
637 # If we have a particular alias for this, skip deep
638 # canonicalization to prevent changing
639 # e.g. char* -> int8*
641 return firstpass.target_fundamental
643 if not ctype.endswith('*'):
646 # We have a pointer type.
647 # Strip the end pointer, canonicalize our base type
649 canonical_base = self._canonicalize_ctype(base)
651 # Append the pointer again
652 canonical = canonical_base + '*'
656 def _create_type_from_base(self, source_type, is_parameter=False, is_return=False):
657 ctype = self._create_source_type(source_type, is_parameter=is_parameter)
658 complete_ctype = self._create_complete_source_type(source_type, is_parameter=is_parameter)
659 const = ((source_type.type == CTYPE_POINTER) and
660 (source_type.base_type.type_qualifier & TYPE_QUALIFIER_CONST))
661 return self.create_type_from_ctype_string(ctype, is_const=const,
662 is_parameter=is_parameter, is_return=is_return,
663 complete_ctype=complete_ctype)
665 def _create_bare_container_type(self, base, ctype=None,
666 is_const=False, complete_ctype=None):
667 if base in ('GList', 'GSList', 'GLib.List', 'GLib.SList'):
668 if base in ('GList', 'GSList'):
669 name = 'GLib.' + base[1:]
672 return ast.List(name, ast.TYPE_ANY, ctype=ctype,
673 is_const=is_const, complete_ctype=complete_ctype)
674 elif base in ('GByteArray', 'GLib.ByteArray', 'GObject.ByteArray'):
675 return ast.Array('GLib.ByteArray', ast.TYPE_UINT8, ctype=ctype,
676 is_const=is_const, complete_ctype=complete_ctype)
677 elif base in ('GArray', 'GPtrArray',
678 'GLib.Array', 'GLib.PtrArray',
679 'GObject.Array', 'GObject.PtrArray'):
681 name = 'GLib.' + base.split('.', 1)[1]
683 name = 'GLib.' + base[1:]
684 return ast.Array(name, ast.TYPE_ANY, ctype=ctype,
685 is_const=is_const, complete_ctype=complete_ctype)
686 elif base in ('GHashTable', 'GLib.HashTable', 'GObject.HashTable'):
687 return ast.Map(ast.TYPE_ANY, ast.TYPE_ANY, ctype=ctype, is_const=is_const,
688 complete_ctype=complete_ctype)
691 def create_type_from_ctype_string(self, ctype, is_const=False,
692 is_parameter=False, is_return=False,
693 complete_ctype=None):
694 canonical = self._canonicalize_ctype(ctype)
695 base = canonical.replace('*', '')
697 # While gboolean and _Bool are distinct types, they used to be treated
698 # by scanner as exactly the same one. In general this is incorrect
699 # because of different ABI, but this usually works fine,
700 # so for backward compatibility lets continue for now:
701 # https://gitlab.gnome.org/GNOME/gobject-introspection/merge_requests/24#note_92792
702 if canonical == '_Bool':
703 canonical = 'gboolean'
706 # Special default: char ** -> ast.Array, same for GStrv
707 if (is_return and canonical == 'utf8*') or base == 'GStrv':
708 bare_utf8 = ast.TYPE_STRING.clone()
709 bare_utf8.ctype = None
710 return ast.Array(None, bare_utf8, ctype=ctype,
711 is_const=is_const, complete_ctype=complete_ctype)
713 fundamental = ast.type_names.get(base)
714 if fundamental is not None:
715 return ast.Type(target_fundamental=fundamental.target_fundamental,
717 is_const=is_const, complete_ctype=complete_ctype)
718 container = self._create_bare_container_type(base, ctype=ctype, is_const=is_const,
719 complete_ctype=complete_ctype)
722 return ast.Type(ctype=ctype, is_const=is_const, complete_ctype=complete_ctype)
724 def _create_parameter(self, parent_symbol, index, symbol):
725 if symbol.type == CSYMBOL_TYPE_ELLIPSIS:
726 return ast.Parameter('...', ast.Varargs())
728 ptype = self._create_type_from_base(symbol.base_type, is_parameter=True)
730 if symbol.ident is None:
731 if symbol.base_type and symbol.base_type.type != CTYPE_VOID:
732 message.warn_symbol(parent_symbol, "missing parameter name; undocumentable")
733 ident = 'arg%d' % (index, )
737 return ast.Parameter(ident, ptype)
739 def _create_return(self, source_type):
740 typeval = self._create_type_from_base(source_type, is_return=True)
741 return ast.Return(typeval)
743 def _create_const(self, symbol):
744 if symbol.ident.startswith('_'):
747 # Don't create constants for non-public things
748 # http://bugzilla.gnome.org/show_bug.cgi?id=572790
749 if (symbol.source_filename is None or not symbol.source_filename.endswith('.h')):
751 name = self._strip_symbol(symbol)
752 if symbol.const_string is not None:
753 typeval = ast.TYPE_STRING
754 value = symbol.const_string
755 elif symbol.const_int is not None:
756 if symbol.base_type is not None:
757 typeval = self._create_type_from_base(symbol.base_type)
759 typeval = ast.TYPE_INT
761 self._resolve_type_from_ctype(unaliased)
762 if typeval.target_giname and typeval.ctype:
763 target = self.lookup_giname(typeval.target_giname)
764 target = self.resolve_aliases(target)
765 if isinstance(target, ast.Type):
767 if unaliased == ast.TYPE_UINT64:
768 value = str(symbol.const_int % 2 ** 64)
769 elif unaliased == ast.TYPE_UINT32:
770 value = str(symbol.const_int % 2 ** 32)
771 elif unaliased == ast.TYPE_UINT16:
772 value = str(symbol.const_int % 2 ** 16)
773 elif unaliased == ast.TYPE_UINT8:
774 value = str(symbol.const_int % 2 ** 16)
776 value = str(symbol.const_int)
777 elif symbol.const_boolean is not None:
778 typeval = ast.TYPE_BOOLEAN
779 value = "true" if symbol.const_boolean else "false"
780 elif symbol.const_double is not None:
781 typeval = ast.TYPE_DOUBLE
782 value = '%f' % (symbol.const_double, )
784 raise AssertionError()
786 const = ast.Constant(name, typeval, value,
788 const.add_symbol_reference(symbol)
791 def _create_typedef_compound(self, compound_class, symbol, disguised=False):
792 name = self.strip_identifier(symbol.ident)
793 assert symbol.base_type
794 if symbol.base_type.name:
795 tag_name = symbol.base_type.name
799 # If the struct already exists in the tag namespace, use it.
800 if tag_name in self._tag_ns:
801 compound = self._tag_ns[tag_name]
803 # If the struct name is set it means the struct has already been
804 # promoted from the tag namespace to the main namespace by a
805 # prior typedef struct. If we get here it means this is another
806 # typedef of that struct. Instead of creating an alias to the
807 # primary typedef that has been promoted, we create a new Record
808 # with shared fields. This handles the case where we want to
809 # give structs like GInitiallyUnowned its own Record:
810 # typedef struct _GObject GObject;
811 # typedef struct _GObject GInitiallyUnowned;
812 # See: http://bugzilla.gnome.org/show_bug.cgi?id=569408
813 new_compound = compound_class(name, symbol.ident, tag_name=tag_name)
814 new_compound.fields = compound.fields
815 new_compound.add_symbol_reference(symbol)
818 # If the struct does not have its name set, it exists only in
819 # the tag namespace. Set it here and return it which will
820 # promote it to the main namespace. Essentially the first
821 # typedef for a struct clobbers its name and ctype which is what
822 # will be visible to GI.
824 compound.ctype = symbol.ident
826 # Create a new struct with a typedef name and tag name when available.
827 # Structs with a typedef name are promoted into the main namespace
828 # by it being returned to the "parse" function and are also added to
829 # the tag namespace if it has a tag_name set.
830 compound = compound_class(name, symbol.ident, disguised=disguised, tag_name=tag_name)
832 # Force the struct as disguised for now since we do not yet know
833 # if it has fields that will be parsed. Note that this is using
834 # an erroneous definition of disguised and we should eventually
835 # only look at the field count when needed.
836 compound.disguised = True
838 # Case where we have an anonymous struct which is typedef'd:
839 # typedef struct {...} Struct;
840 # we need to parse the fields because we never get a struct
841 # in the tag namespace which is normally where fields are parsed.
842 self._parse_fields(symbol, compound)
844 compound.add_symbol_reference(symbol)
847 def _create_tag_ns_compound(self, compound_class, symbol):
848 # Get or create a struct from C's tag namespace
849 if symbol.ident in self._tag_ns:
850 compound = self._tag_ns[symbol.ident]
852 compound = compound_class(None, symbol.ident, tag_name=symbol.ident)
854 # Make sure disguised is False as we are now about to parse the
855 # fields of the real struct.
856 compound.disguised = False
857 # Fields may need to be parsed in either of the above cases because the
858 # Record can be created with a typedef prior to the struct definition.
859 self._parse_fields(symbol, compound)
860 compound.add_symbol_reference(symbol)
863 def _create_member_compound(self, compound_class, symbol):
864 compound = compound_class(symbol.ident, symbol.ident)
865 self._parse_fields(symbol, compound)
866 compound.add_symbol_reference(symbol)
869 def _create_typedef_callback(self, symbol):
870 callback = self._create_callback(symbol)
875 def _parse_fields(self, symbol, compound):
876 for child in symbol.base_type.child_list:
877 child_node = self._traverse_one(child, parent_symbol=symbol)
880 if isinstance(child_node, ast.Field):
883 field = ast.Field(child.ident, None, True, False,
884 anonymous_node=child_node)
885 compound.fields.append(field)
887 def _create_callback(self, symbol, member=False):
888 if (symbol.base_type.type == CTYPE_FUNCTION): # function
889 paramtype = symbol.base_type
890 retvaltype = symbol.base_type.base_type
891 elif (symbol.base_type.type == CTYPE_POINTER): # function pointer
892 paramtype = symbol.base_type.base_type
893 retvaltype = symbol.base_type.base_type.base_type
894 parameters = list(self._create_parameters(symbol, paramtype))
895 retval = self._create_return(retvaltype)
897 # Mark the 'user_data' arguments
898 for i, param in enumerate(parameters):
899 if (param.type.target_fundamental == 'gpointer' and param.argname == 'user_data'):
900 param.closure_name = param.argname
904 elif symbol.ident.find('_') > 0:
905 name = self._strip_symbol(symbol)
907 name = self.strip_identifier(symbol.ident)
908 callback = ast.Callback(name, retval, parameters, False,
910 callback.add_symbol_reference(symbol)
914 def create_type_from_user_string(self, typestr):
915 """Parse a C type string (as might be given from an
916 annotation) and resolve it. For compatibility, we can consume
917 both GI type string (utf8, Foo.Bar) style, as well as C (char *, FooBar) style.
919 Note that type resolution may not succeed."""
921 container = self._create_bare_container_type(typestr)
925 typeval = self._namespace.type_from_name(typestr)
927 typeval = self.create_type_from_ctype_string(typestr)
929 self.resolve_type(typeval)
931 # Explicitly clear out the c_type; there isn't one in this case.
935 def _resolve_type_from_ctype_all_namespaces(self, typeval, pointer_stripped):
936 # If we can't determine the namespace from the type name,
937 # fall back to trying all of our includes. An example of this is mutter,
938 # which has nominal namespace of "Meta", but a few classes are
939 # "Mutter". We don't export that data in introspection currently.
940 # Basically the library should be fixed, but we'll hack around it here.
941 for namespace in self._parsed_includes.values():
942 target = namespace.get_by_ctype(pointer_stripped)
944 typeval.target_giname = '%s.%s' % (namespace.name, target.name)
948 def _resolve_type_from_ctype(self, typeval):
949 assert typeval.ctype is not None
950 pointer_stripped = typeval.ctype.replace('*', '')
952 matches = self.split_ctype_namespaces(pointer_stripped)
954 return self._resolve_type_from_ctype_all_namespaces(typeval, pointer_stripped)
955 for namespace, name in matches:
956 target = namespace.get(name)
958 target = namespace.get_by_ctype(pointer_stripped)
960 typeval.target_giname = '%s.%s' % (namespace.name, target.name)
964 def _resolve_type_from_gtype_name(self, typeval):
965 assert typeval.gtype_name is not None
966 for ns in self._iter_namespaces():
967 node = ns.type_names.get(typeval.gtype_name, None)
969 typeval.target_giname = '%s.%s' % (ns.name, node.name)
973 def _resolve_type_internal(self, typeval):
974 if isinstance(typeval, (ast.Array, ast.List)):
975 return self.resolve_type(typeval.element_type)
976 elif isinstance(typeval, ast.Map):
977 key_resolved = self.resolve_type(typeval.key_type)
978 value_resolved = self.resolve_type(typeval.value_type)
979 return key_resolved and value_resolved
980 elif typeval.resolved:
983 return self._resolve_type_from_ctype(typeval)
984 elif typeval.gtype_name:
985 return self._resolve_type_from_gtype_name(typeval)
987 def resolve_type(self, typeval):
988 if not self._resolve_type_internal(typeval):
991 if typeval.target_fundamental or typeval.target_foreign:
994 assert typeval.target_giname is not None
997 type_ = self.lookup_giname(typeval.target_giname)
1002 typeval.target_giname = None
1004 return typeval.resolved
1006 def resolve_aliases(self, typenode):
1007 """Removes all aliases from typenode, returns first non-alias
1008 in the typenode alias chain. Returns typenode argument if it
1010 while isinstance(typenode, ast.Alias):
1011 if typenode.target.target_giname is not None:
1012 typenode = self.lookup_giname(typenode.target.target_giname)
1013 elif typenode.target.target_fundamental is not None:
1014 typenode = typenode.target