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_FUNCTION_MACRO, 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.
81 (isinstance(original, ast.FunctionMacro) or isinstance(node,
84 elif isinstance(original, ast.Constant) and isinstance(node, ast.Constant):
86 elif original is node:
87 # Ignore attempts to add the same node to the namespace. This can
88 # happen when parsing typedefs and structs in particular orderings:
89 # typedef struct _Foo Foo;
94 positions.update(original.file_positions)
95 positions.update(node.file_positions)
96 message.fatal("Namespace conflict for '%s'" % (node.name, ),
99 self._namespace.append(node)
101 def parse(self, symbols):
102 for symbol in symbols:
104 # https://bugzilla.gnome.org/show_bug.cgi?id=550616
105 if symbol.ident in ['gst_g_error_get_type']:
109 node = self._traverse_one(symbol)
110 except TransformerException as e:
111 message.warn_symbol(symbol, e)
114 if node and node.name:
115 self._append_new_node(node)
116 if isinstance(node, ast.Compound) and node.tag_name and \
117 node.tag_name not in self._tag_ns:
118 self._tag_ns[node.tag_name] = node
120 # Run through the tag namespace looking for structs that have not been
121 # promoted into the main namespace. In this case we simply promote them
122 # with their struct tag.
123 for tag_name, struct in self._tag_ns.items():
126 name = self.strip_identifier(tag_name)
128 self._append_new_node(struct)
129 except TransformerException as e:
130 message.warn_node(node, e)
132 def set_include_paths(self, paths):
133 self._includepaths = list(paths)
135 def register_include(self, include):
136 if include in self._namespace.includes:
138 self._namespace.includes.add(include)
139 filename = self._find_include(include)
140 self._parse_include(filename)
142 def register_include_uninstalled(self, include_path):
143 basename = os.path.basename(include_path)
144 if not basename.endswith('.gir'):
145 raise SystemExit("Include path '%s' must be a filename path "
146 "ending in .gir" % (include_path, ))
147 girname = basename[:-4]
148 include = ast.Include.from_string(girname)
149 if include in self._namespace.includes:
151 self._namespace.includes.add(include)
152 self._parse_include(include_path, uninstalled=True)
154 def lookup_giname(self, name):
155 """Given a name of the form Foo or Bar.Foo,
156 return the corresponding ast.Node, or None if none
157 available. Will throw KeyError however for unknown
160 return self._namespace.get(name)
162 (ns, giname) = name.split('.', 1)
163 if ns == self._namespace.name:
164 return self._namespace.get(giname)
165 # Fallback to the main namespace if not a dependency and matches a prefix
166 if ns in self._namespace.identifier_prefixes and ns not in self._parsed_includes:
167 message.warn(("Deprecated reference to identifier " +
168 "prefix %s in GIName %s") % (ns, name))
169 return self._namespace.get(giname)
170 include = self._parsed_includes[ns]
171 return include.get(giname)
173 def lookup_typenode(self, typeobj):
174 """Given a Type object, if it points to a giname,
175 calls lookup_giname() on the name. Otherwise return
177 if typeobj.target_giname:
178 return self.lookup_giname(typeobj.target_giname)
183 def _get_gi_data_dirs(self):
184 data_dirs = utils.get_system_data_dirs()
185 data_dirs.append(DATADIR)
187 # For backwards compatibility, was always unconditionally added to the list.
188 data_dirs.append('/usr/share')
191 def _find_include(self, include):
192 searchdirs = self._includepaths[:]
193 searchdirs.extend(GIRDIR)
194 for path in self._get_gi_data_dirs():
195 searchdirs.append(os.path.join(path, 'gir-1.0'))
197 girname = '%s-%s.gir' % (include.name, include.version)
199 path = os.path.join(d, girname)
200 if os.path.exists(path):
202 sys.stderr.write("Couldn't find include '%s' (search path: '%s')\n" %
203 (girname, searchdirs))
207 def parse_from_gir(cls, filename, extra_include_dirs=None):
209 if extra_include_dirs is not None:
210 self.set_include_paths(extra_include_dirs)
211 self.set_passthrough_mode()
212 parser = self._parse_include(filename)
213 self._namespace = parser.get_namespace()
214 del self._parsed_includes[self._namespace.name]
217 def _parse_include(self, filename, uninstalled=False):
219 if self._cachestore is not None:
220 parser = self._cachestore.load(filename)
222 parser = GIRParser(types_only=not self._passthrough_mode)
223 parser.parse(filename)
224 if self._cachestore is not None:
225 self._cachestore.store(filename, parser)
227 for include in parser.get_namespace().includes:
228 if include.name not in self._parsed_includes:
229 dep_filename = self._find_include(include)
230 self._parse_include(dep_filename)
233 for pkg in parser.get_namespace().exported_packages:
234 self._pkg_config_packages.add(pkg)
235 namespace = parser.get_namespace()
236 self._parsed_includes[namespace.name] = namespace
239 def _iter_namespaces(self):
240 """Return an iterator over all included namespaces; the
241 currently-scanned namespace is first."""
242 yield self._namespace
243 for ns in self._parsed_includes.values():
246 def _sort_matches(self, val):
247 """Key sort which ensures items in self._namespace are last by returning
248 a tuple key starting with 1 for self._namespace entries and 0 for
251 if val[0] == self._namespace:
256 def _split_c_string_for_namespace_matches(self, name, is_identifier=False):
257 if not is_identifier and self._symbol_filter_cmd:
258 proc = subprocess.Popen(self._symbol_filter_cmd,
259 stdin=subprocess.PIPE,
260 stdout=subprocess.PIPE,
261 stderr=subprocess.PIPE)
262 proc_name, err = proc.communicate(name.encode())
263 proc_name = proc_name.strip()
265 raise ValueError('filter: %r exited: %d with error: %s' %
266 (self._symbol_filter_cmd, proc.returncode, err))
267 name = proc_name.decode('ascii')
270 matches = [] # Namespaces which might contain this name
271 unprefixed_namespaces = [] # Namespaces with no prefix, last resort
272 for ns in self._iter_namespaces():
274 prefixes = ns.identifier_prefixes
275 elif name[0].isupper():
276 prefixes = ns._ucase_symbol_prefixes
278 prefixes = ns.symbol_prefixes
280 for prefix in prefixes:
281 if (not is_identifier) and (not prefix.endswith('_')):
282 prefix = prefix + '_'
283 if name.startswith(prefix):
284 matches.append((ns, name[len(prefix):], len(prefix)))
287 unprefixed_namespaces.append(ns)
289 matches.sort(key=self._sort_matches)
290 return list(map(lambda x: (x[0], x[1]), matches))
291 elif self._accept_unprefixed:
292 return [(self._namespace, name)]
293 elif unprefixed_namespaces:
294 # A bit of a hack; this function ideally shouldn't look through the
295 # contents of namespaces; but since we aren't scanning anything
296 # without a prefix, it's not too bad.
297 for ns in unprefixed_namespaces:
300 raise ValueError("Unknown namespace for %s '%s'"
301 % ('identifier' if is_identifier else 'symbol', name, ))
303 def split_ctype_namespaces(self, ident):
304 """Given a StudlyCaps string identifier like FooBar, return a
305 list of (namespace, stripped_identifier) sorted by namespace length,
306 or raise ValueError. As a special case, if the current namespace matches,
307 it is always biggest (i.e. last)."""
308 return self._split_c_string_for_namespace_matches(ident, is_identifier=True)
310 def split_csymbol_namespaces(self, symbol):
311 """Given a C symbol like foo_bar_do_baz, return a list of
312 (namespace, stripped_symbol) sorted by namespace match probablity, or
314 return self._split_c_string_for_namespace_matches(symbol, is_identifier=False)
316 def split_csymbol(self, symbol):
317 """Given a C symbol like foo_bar_do_baz, return the most probable
318 (namespace, stripped_symbol) match, or raise ValueError."""
319 matches = self._split_c_string_for_namespace_matches(symbol, is_identifier=False)
322 def strip_identifier(self, ident):
323 if self._identifier_filter_cmd:
324 proc = subprocess.Popen(self._identifier_filter_cmd,
325 stdin=subprocess.PIPE,
326 stdout=subprocess.PIPE,
327 stderr=subprocess.PIPE)
328 proc_ident, err = proc.communicate(ident.encode())
330 raise ValueError('filter: %r exited: %d with error: %s' %
331 (self._identifier_filter_cmd, proc.returncode, err))
332 ident = proc_ident.decode('ascii').strip()
334 hidden = ident.startswith('_')
338 matches = self.split_ctype_namespaces(ident)
339 except ValueError as e:
340 raise TransformerException(str(e))
341 for ns, name in matches:
342 if ns is self._namespace:
346 (ns, name) = matches[-1]
347 raise TransformerException(
348 "Skipping foreign identifier '%s' from namespace %s" % (ident, ns.name, ))
351 def _strip_symbol(self, symbol):
353 hidden = ident.startswith('_')
357 (ns, name) = self.split_csymbol(ident)
358 except ValueError as e:
359 raise TransformerException(str(e))
360 if ns != self._namespace:
361 raise TransformerException(
362 "Skipping foreign symbol from namespace %s" % (ns.name, ))
367 def _traverse_one(self, symbol, stype=None, parent_symbol=None):
368 assert isinstance(symbol, SourceSymbol), symbol
372 if stype == CSYMBOL_TYPE_FUNCTION:
373 return self._create_function(symbol)
374 elif stype == CSYMBOL_TYPE_FUNCTION_MACRO:
375 return self._create_function_macro(symbol)
376 elif stype == CSYMBOL_TYPE_TYPEDEF:
377 return self._create_typedef(symbol)
378 elif stype == CSYMBOL_TYPE_STRUCT:
379 return self._create_tag_ns_compound(ast.Record, symbol)
380 elif stype == CSYMBOL_TYPE_ENUM:
381 return self._create_enum(symbol)
382 elif stype == CSYMBOL_TYPE_MEMBER:
383 return self._create_member(symbol, parent_symbol)
384 elif stype == CSYMBOL_TYPE_UNION:
385 return self._create_tag_ns_compound(ast.Union, symbol)
386 elif stype == CSYMBOL_TYPE_CONST:
387 return self._create_const(symbol)
388 # Ignore variable declarations in the header
389 elif stype == CSYMBOL_TYPE_OBJECT:
392 print("transformer: unhandled symbol: '%s'" % (symbol, ))
394 def _enum_common_prefix(self, symbol):
395 def common_prefix(a, b):
397 for aword, bword in zip(a.split('_'), b.split('_')):
399 return '_'.join(commonparts) + '_'
400 commonparts.append(aword)
403 # Nothing less than 2 has a common prefix
404 if len(list(symbol.base_type.child_list)) < 2:
407 for child in symbol.base_type.child_list:
411 prefix = common_prefix(prefix, child.ident)
416 def _create_enum(self, symbol):
417 prefix = self._enum_common_prefix(symbol)
419 prefixlen = len(prefix)
423 for child in symbol.base_type.child_list:
427 name = child.ident[prefixlen:]
429 # Ok, the enum members don't have a consistent prefix
430 # among them, so let's just remove the global namespace
432 name = self._strip_symbol(child)
433 members.append(ast.Member(name.lower(),
438 enum_name = self.strip_identifier(symbol.ident)
439 if symbol.base_type.is_bitfield:
443 node = klass(enum_name, symbol.ident, members=members)
444 node.add_symbol_reference(symbol)
447 def _create_function(self, symbol):
448 # Drop functions that start with _ very early on here
449 if symbol.ident.startswith('_'):
451 parameters = list(self._create_parameters(symbol, symbol.base_type))
452 return_ = self._create_return(symbol.base_type.base_type)
453 name = self._strip_symbol(symbol)
454 func = ast.Function(name, return_, parameters, False, symbol.ident)
455 func.add_symbol_reference(symbol)
458 def _create_function_macro(self, symbol):
459 if symbol.ident.startswith('_'):
462 if (symbol.source_filename is None or not symbol.source_filename.endswith('.h')):
465 parameters = list(self._create_parameters(symbol, symbol.base_type))
466 name = self._strip_symbol(symbol)
467 macro = ast.FunctionMacro(name, parameters, symbol.ident)
468 macro.add_symbol_reference(symbol)
471 def _create_source_type(self, source_type, is_parameter=False):
472 assert source_type is not None
473 if source_type.type == CTYPE_VOID:
475 elif source_type.type == CTYPE_BASIC_TYPE:
476 value = source_type.name
477 elif source_type.type == CTYPE_TYPEDEF:
478 value = source_type.name
479 elif (source_type.type == CTYPE_POINTER or
480 # Array to pointer adjustment as per 6.7.6.3.
481 # This is performed only on the outermost array,
482 # so we don't forward is_parameter.
483 (source_type.type == CTYPE_ARRAY and is_parameter)):
484 value = self._create_source_type(source_type.base_type) + '*'
485 elif source_type.type == CTYPE_ARRAY:
486 return self._create_source_type(source_type.base_type)
491 def _create_complete_source_type(self, source_type, is_parameter=False):
492 assert source_type is not None
494 const = (source_type.type_qualifier & TYPE_QUALIFIER_CONST)
495 volatile = (source_type.type_qualifier & TYPE_QUALIFIER_VOLATILE)
497 if source_type.type == CTYPE_VOID:
499 elif source_type.type in [CTYPE_BASIC_TYPE,
504 value = source_type.name
506 value = 'const ' + value
508 value = 'volatile ' + value
510 elif (source_type.type == CTYPE_POINTER or
511 # Array to pointer adjustment as per 6.7.6.3.
512 # This is performed only on the outermost array,
513 # so we don't forward is_parameter.
514 (source_type.type == CTYPE_ARRAY and is_parameter)):
515 value = self._create_complete_source_type(source_type.base_type) + '*'
516 # TODO: handle pointer to function as a special case?
522 elif source_type.type == CTYPE_ARRAY:
523 return self._create_complete_source_type(source_type.base_type)
526 value = 'gconstpointer'
530 value = 'volatile ' + value
533 def _create_parameters(self, symbol, base_type):
534 for i, child in enumerate(base_type.child_list):
535 yield self._create_parameter(symbol, i, child)
537 def _synthesize_union_type(self, symbol, parent_symbol):
538 # Synthesize a named union so that it can be referenced.
539 parent_ident = parent_symbol.ident
540 # FIXME: Should split_ctype_namespaces handle the hidden case?
541 hidden = parent_ident.startswith('_')
543 parent_ident = parent_ident[1:]
544 matches = self.split_ctype_namespaces(parent_ident)
545 (namespace, parent_name) = matches[-1]
546 assert namespace and parent_name
548 parent_name = '_' + parent_name
549 fake_union = ast.Union("%s__%s__union" % (parent_name, symbol.ident))
550 # _parse_fields accesses <type>.base_type.child_list, so we have to
551 # pass symbol.base_type even though that refers to the array, not the
553 self._parse_fields(symbol.base_type, fake_union)
554 self._append_new_node(fake_union)
555 fake_type = ast.Type(
556 target_giname="%s.%s" % (namespace.name, fake_union.name))
559 def _create_member(self, symbol, parent_symbol=None):
560 source_type = symbol.base_type
561 if (source_type.type == CTYPE_POINTER
562 and symbol.base_type.base_type.type == CTYPE_FUNCTION):
563 node = self._create_callback(symbol, member=True)
564 elif source_type.type == CTYPE_STRUCT and source_type.name is None:
565 node = self._create_member_compound(ast.Record, symbol)
566 elif source_type.type == CTYPE_UNION and source_type.name is None:
567 node = self._create_member_compound(ast.Union, symbol)
569 # Special handling for fields; we don't have annotations on them
570 # to apply later, yet.
571 if source_type.type == CTYPE_ARRAY:
572 # Determine flattened array size and its element type.
574 while source_type.type == CTYPE_ARRAY:
575 for child in source_type.child_list:
576 if flattened_size is not None:
577 flattened_size *= child.const_int
580 flattened_size = None
581 source_type = source_type.base_type
583 # If the array contains anonymous unions, like in the GValue
584 # struct, we need to handle this specially. This is necessary
585 # to be able to properly calculate the size of the compound
586 # type (e.g. GValue) that contains this array, see
587 # <https://bugzilla.gnome.org/show_bug.cgi?id=657040>.
588 if source_type.type == CTYPE_UNION and source_type.name is None:
589 element_type = self._synthesize_union_type(symbol, parent_symbol)
591 ctype = self._create_source_type(source_type)
592 complete_ctype = self._create_complete_source_type(source_type)
593 element_type = self.create_type_from_ctype_string(ctype,
594 complete_ctype=complete_ctype)
595 ftype = ast.Array(None, element_type)
596 ftype.zeroterminated = False
597 ftype.size = flattened_size
599 ftype = self._create_type_from_base(symbol.base_type)
600 # ast.Fields are assumed to be read-write
601 # (except for Objects, see also glibtransformer.py)
602 node = ast.Field(symbol.ident, ftype,
603 readable=True, writable=True,
604 bits=symbol.const_int)
606 node.readable = False
607 node.writable = False
611 def _create_typedef(self, symbol):
612 ctype = symbol.base_type.type
613 if (ctype == CTYPE_POINTER and symbol.base_type.base_type.type == CTYPE_FUNCTION):
614 node = self._create_typedef_callback(symbol)
615 elif (ctype == CTYPE_FUNCTION):
616 node = self._create_typedef_callback(symbol)
617 elif (ctype == CTYPE_POINTER and symbol.base_type.base_type.type == CTYPE_STRUCT):
618 node = self._create_typedef_compound(ast.Record, symbol, disguised=True)
619 elif ctype == CTYPE_STRUCT:
620 node = self._create_typedef_compound(ast.Record, symbol)
621 elif ctype == CTYPE_UNION:
622 node = self._create_typedef_compound(ast.Union, symbol)
623 elif ctype == CTYPE_ENUM:
624 return self._create_enum(symbol)
625 elif ctype in (CTYPE_TYPEDEF,
629 name = self.strip_identifier(symbol.ident)
630 target = self._create_type_from_base(symbol.base_type)
631 if name in ast.type_names:
633 # https://bugzilla.gnome.org/show_bug.cgi?id=755882
634 if name.endswith('_autoptr'):
636 node = ast.Alias(name, target, ctype=symbol.ident)
637 node.add_symbol_reference(symbol)
639 raise NotImplementedError(
640 "symbol '%s' of type %s" % (symbol.ident, ctype_name(ctype)))
643 def _canonicalize_ctype(self, ctype):
644 # First look up the ctype including any pointers;
645 # a few type names like 'char*' have their own aliases
646 # and we need pointer information for those.
647 firstpass = ast.type_names.get(ctype)
649 # If we have a particular alias for this, skip deep
650 # canonicalization to prevent changing
651 # e.g. char* -> int8*
653 return firstpass.target_fundamental
655 if not ctype.endswith('*'):
658 # We have a pointer type.
659 # Strip the end pointer, canonicalize our base type
661 canonical_base = self._canonicalize_ctype(base)
663 # Append the pointer again
664 canonical = canonical_base + '*'
668 def _create_type_from_base(self, source_type, is_parameter=False, is_return=False):
669 ctype = self._create_source_type(source_type, is_parameter=is_parameter)
670 complete_ctype = self._create_complete_source_type(source_type, is_parameter=is_parameter)
671 const = ((source_type.type == CTYPE_POINTER) and
672 (source_type.base_type.type_qualifier & TYPE_QUALIFIER_CONST))
673 return self.create_type_from_ctype_string(ctype, is_const=const,
674 is_parameter=is_parameter, is_return=is_return,
675 complete_ctype=complete_ctype)
677 def _create_bare_container_type(self, base, ctype=None,
678 is_const=False, complete_ctype=None):
679 if base in ('GList', 'GSList', 'GLib.List', 'GLib.SList'):
680 if base in ('GList', 'GSList'):
681 name = 'GLib.' + base[1:]
684 return ast.List(name, ast.TYPE_ANY, ctype=ctype,
685 is_const=is_const, complete_ctype=complete_ctype)
686 elif base in ('GByteArray', 'GLib.ByteArray', 'GObject.ByteArray'):
687 return ast.Array('GLib.ByteArray', ast.TYPE_UINT8, ctype=ctype,
688 is_const=is_const, complete_ctype=complete_ctype)
689 elif base in ('GArray', 'GPtrArray',
690 'GLib.Array', 'GLib.PtrArray',
691 'GObject.Array', 'GObject.PtrArray'):
693 name = 'GLib.' + base.split('.', 1)[1]
695 name = 'GLib.' + base[1:]
696 return ast.Array(name, ast.TYPE_ANY, ctype=ctype,
697 is_const=is_const, complete_ctype=complete_ctype)
698 elif base in ('GHashTable', 'GLib.HashTable', 'GObject.HashTable'):
699 return ast.Map(ast.TYPE_ANY, ast.TYPE_ANY, ctype=ctype, is_const=is_const,
700 complete_ctype=complete_ctype)
703 def create_type_from_ctype_string(self, ctype, is_const=False,
704 is_parameter=False, is_return=False,
705 complete_ctype=None):
706 canonical = self._canonicalize_ctype(ctype)
707 base = canonical.replace('*', '')
709 # While gboolean and _Bool are distinct types, they used to be treated
710 # by scanner as exactly the same one. In general this is incorrect
711 # because of different ABI, but this usually works fine,
712 # so for backward compatibility lets continue for now:
713 # https://gitlab.gnome.org/GNOME/gobject-introspection/merge_requests/24#note_92792
714 if canonical in ('_Bool', 'bool'):
715 canonical = 'gboolean'
718 # Special default: char ** -> ast.Array, same for GStrv
719 if (is_return and canonical == 'utf8*') or base == 'GStrv':
720 bare_utf8 = ast.TYPE_STRING.clone()
721 bare_utf8.ctype = None
722 return ast.Array(None, bare_utf8, ctype=ctype,
723 is_const=is_const, complete_ctype=complete_ctype)
725 fundamental = ast.type_names.get(base)
726 if fundamental is not None:
727 return ast.Type(target_fundamental=fundamental.target_fundamental,
729 is_const=is_const, complete_ctype=complete_ctype)
730 container = self._create_bare_container_type(base, ctype=ctype, is_const=is_const,
731 complete_ctype=complete_ctype)
734 return ast.Type(ctype=ctype, is_const=is_const, complete_ctype=complete_ctype)
736 def _create_parameter(self, parent_symbol, index, symbol):
737 if symbol.type == CSYMBOL_TYPE_ELLIPSIS:
738 return ast.Parameter('...', ast.Varargs())
741 ptype = self._create_type_from_base(symbol.base_type, is_parameter=True)
745 if symbol.ident is None:
746 if symbol.base_type and symbol.base_type.type != CTYPE_VOID:
747 message.warn_symbol(parent_symbol, "missing parameter name; undocumentable")
748 ident = 'arg%d' % (index, )
752 return ast.Parameter(ident, ptype)
754 def _create_return(self, source_type):
755 typeval = self._create_type_from_base(source_type, is_return=True)
756 return ast.Return(typeval)
758 def _create_const(self, symbol):
759 if symbol.ident.startswith('_'):
762 # Don't create constants for non-public things
763 # http://bugzilla.gnome.org/show_bug.cgi?id=572790
764 if (symbol.source_filename is None or not symbol.source_filename.endswith('.h')):
766 name = self._strip_symbol(symbol)
767 if symbol.const_string is not None:
768 typeval = ast.TYPE_STRING
769 value = symbol.const_string
770 elif symbol.const_int is not None:
771 if symbol.base_type is not None:
772 typeval = self._create_type_from_base(symbol.base_type)
774 typeval = ast.TYPE_INT
776 self._resolve_type_from_ctype(unaliased)
777 if typeval.target_giname and typeval.ctype:
778 target = self.lookup_giname(typeval.target_giname)
779 target = self.resolve_aliases(target)
780 if isinstance(target, ast.Type):
782 if unaliased == ast.TYPE_UINT64:
783 value = str(symbol.const_int % 2 ** 64)
784 elif unaliased == ast.TYPE_UINT32:
785 value = str(symbol.const_int % 2 ** 32)
786 elif unaliased == ast.TYPE_UINT16:
787 value = str(symbol.const_int % 2 ** 16)
788 elif unaliased == ast.TYPE_UINT8:
789 value = str(symbol.const_int % 2 ** 16)
791 value = str(symbol.const_int)
792 elif symbol.const_boolean is not None:
793 typeval = ast.TYPE_BOOLEAN
794 value = "true" if symbol.const_boolean else "false"
795 elif symbol.const_double is not None:
796 typeval = ast.TYPE_DOUBLE
797 value = '%f' % (symbol.const_double, )
799 raise AssertionError()
801 const = ast.Constant(name, typeval, value,
803 const.add_symbol_reference(symbol)
806 def _create_typedef_compound(self, compound_class, symbol, disguised=False):
807 name = self.strip_identifier(symbol.ident)
808 assert symbol.base_type
809 if symbol.base_type.name:
810 tag_name = symbol.base_type.name
814 # If the struct already exists in the tag namespace, use it.
815 if tag_name in self._tag_ns:
816 compound = self._tag_ns[tag_name]
818 # If the struct name is set it means the struct has already been
819 # promoted from the tag namespace to the main namespace by a
820 # prior typedef struct. If we get here it means this is another
821 # typedef of that struct. Instead of creating an alias to the
822 # primary typedef that has been promoted, we create a new Record
823 # with shared fields. This handles the case where we want to
824 # give structs like GInitiallyUnowned its own Record:
825 # typedef struct _GObject GObject;
826 # typedef struct _GObject GInitiallyUnowned;
827 # See: http://bugzilla.gnome.org/show_bug.cgi?id=569408
828 new_compound = compound_class(name, symbol.ident, tag_name=tag_name)
829 new_compound.fields = compound.fields
830 new_compound.add_symbol_reference(symbol)
833 # If the struct does not have its name set, it exists only in
834 # the tag namespace. Set it here and return it which will
835 # promote it to the main namespace. Essentially the first
836 # typedef for a struct clobbers its name and ctype which is what
837 # will be visible to GI.
839 compound.ctype = symbol.ident
841 # Create a new struct with a typedef name and tag name when available.
842 # Structs with a typedef name are promoted into the main namespace
843 # by it being returned to the "parse" function and are also added to
844 # the tag namespace if it has a tag_name set.
845 compound = compound_class(name, symbol.ident, disguised=disguised, tag_name=tag_name)
847 # Force the struct as disguised for now since we do not yet know
848 # if it has fields that will be parsed. Note that this is using
849 # an erroneous definition of disguised and we should eventually
850 # only look at the field count when needed.
851 compound.disguised = True
853 # Case where we have an anonymous struct which is typedef'd:
854 # typedef struct {...} Struct;
855 # we need to parse the fields because we never get a struct
856 # in the tag namespace which is normally where fields are parsed.
857 self._parse_fields(symbol, compound)
859 compound.add_symbol_reference(symbol)
862 def _create_tag_ns_compound(self, compound_class, symbol):
863 # Get or create a struct from C's tag namespace
864 if symbol.ident in self._tag_ns:
865 compound = self._tag_ns[symbol.ident]
867 compound = compound_class(None, symbol.ident, tag_name=symbol.ident)
869 # Make sure disguised is False as we are now about to parse the
870 # fields of the real struct.
871 compound.disguised = False
872 # Fields may need to be parsed in either of the above cases because the
873 # Record can be created with a typedef prior to the struct definition.
874 self._parse_fields(symbol, compound)
875 compound.add_symbol_reference(symbol)
878 def _create_member_compound(self, compound_class, symbol):
879 compound = compound_class(symbol.ident, symbol.ident)
880 self._parse_fields(symbol, compound)
881 compound.add_symbol_reference(symbol)
884 def _create_typedef_callback(self, symbol):
885 callback = self._create_callback(symbol)
890 def _parse_fields(self, symbol, compound):
891 for child in symbol.base_type.child_list:
892 child_node = self._traverse_one(child, parent_symbol=symbol)
895 if isinstance(child_node, ast.Field):
898 field = ast.Field(child.ident, None, True, False,
899 anonymous_node=child_node)
900 compound.fields.append(field)
902 def _create_callback(self, symbol, member=False):
903 if (symbol.base_type.type == CTYPE_FUNCTION): # function
904 paramtype = symbol.base_type
905 retvaltype = symbol.base_type.base_type
906 elif (symbol.base_type.type == CTYPE_POINTER): # function pointer
907 paramtype = symbol.base_type.base_type
908 retvaltype = symbol.base_type.base_type.base_type
909 parameters = list(self._create_parameters(symbol, paramtype))
910 retval = self._create_return(retvaltype)
912 # Mark the 'user_data' arguments
913 for i, param in enumerate(parameters):
914 if (param.type.target_fundamental == 'gpointer' and param.argname == 'user_data'):
915 param.closure_name = param.argname
919 elif symbol.ident.find('_') > 0:
920 name = self._strip_symbol(symbol)
922 name = self.strip_identifier(symbol.ident)
923 callback = ast.Callback(name, retval, parameters, False,
925 callback.add_symbol_reference(symbol)
929 def create_type_from_user_string(self, typestr):
930 """Parse a C type string (as might be given from an
931 annotation) and resolve it. For compatibility, we can consume
932 both GI type string (utf8, Foo.Bar) style, as well as C (char *, FooBar) style.
934 Note that type resolution may not succeed."""
936 container = self._create_bare_container_type(typestr)
940 typeval = self._namespace.type_from_name(typestr)
942 typeval = self.create_type_from_ctype_string(typestr)
944 self.resolve_type(typeval)
946 # Explicitly clear out the c_type; there isn't one in this case.
950 def _resolve_type_from_ctype_all_namespaces(self, typeval, pointer_stripped):
951 # If we can't determine the namespace from the type name,
952 # fall back to trying all of our includes. An example of this is mutter,
953 # which has nominal namespace of "Meta", but a few classes are
954 # "Mutter". We don't export that data in introspection currently.
955 # Basically the library should be fixed, but we'll hack around it here.
956 for namespace in self._parsed_includes.values():
957 target = namespace.get_by_ctype(pointer_stripped)
959 typeval.target_giname = '%s.%s' % (namespace.name, target.name)
963 def _resolve_type_from_ctype(self, typeval):
964 assert typeval.ctype is not None
965 pointer_stripped = typeval.ctype.replace('*', '')
967 matches = self.split_ctype_namespaces(pointer_stripped)
969 return self._resolve_type_from_ctype_all_namespaces(typeval, pointer_stripped)
970 for namespace, name in matches:
971 target = namespace.get(name)
973 target = namespace.get_by_ctype(pointer_stripped)
975 typeval.target_giname = '%s.%s' % (namespace.name, target.name)
979 def _resolve_type_from_gtype_name(self, typeval):
980 assert typeval.gtype_name is not None
981 for ns in self._iter_namespaces():
982 node = ns.type_names.get(typeval.gtype_name, None)
984 typeval.target_giname = '%s.%s' % (ns.name, node.name)
988 def _resolve_type_internal(self, typeval):
989 if isinstance(typeval, (ast.Array, ast.List)):
990 return self.resolve_type(typeval.element_type)
991 elif isinstance(typeval, ast.Map):
992 key_resolved = self.resolve_type(typeval.key_type)
993 value_resolved = self.resolve_type(typeval.value_type)
994 return key_resolved and value_resolved
995 elif typeval.resolved:
998 return self._resolve_type_from_ctype(typeval)
999 elif typeval.gtype_name:
1000 return self._resolve_type_from_gtype_name(typeval)
1002 def resolve_type(self, typeval):
1003 if not self._resolve_type_internal(typeval):
1006 if typeval.target_fundamental or typeval.target_foreign:
1009 assert typeval.target_giname is not None
1012 type_ = self.lookup_giname(typeval.target_giname)
1017 typeval.target_giname = None
1019 return typeval.resolved
1021 def resolve_aliases(self, typenode):
1022 """Removes all aliases from typenode, returns first non-alias
1023 in the typenode alias chain. Returns typenode argument if it
1025 while isinstance(typenode, ast.Alias):
1026 if typenode.target.target_giname is not None:
1027 typenode = self.lookup_giname(typenode.target.target_giname)
1028 elif typenode.target.target_fundamental is not None:
1029 typenode = typenode.target