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(),
436 enum_name = self.strip_identifier(symbol.ident)
437 if symbol.base_type.is_bitfield:
441 node = klass(enum_name, symbol.ident, members=members)
442 node.add_symbol_reference(symbol)
445 def _create_function(self, symbol):
446 # Drop functions that start with _ very early on here
447 if symbol.ident.startswith('_'):
449 parameters = list(self._create_parameters(symbol, symbol.base_type))
450 return_ = self._create_return(symbol.base_type.base_type)
451 name = self._strip_symbol(symbol)
452 func = ast.Function(name, return_, parameters, False, symbol.ident)
453 func.add_symbol_reference(symbol)
456 def _create_function_macro(self, symbol):
457 if symbol.ident.startswith('_'):
460 if (symbol.source_filename is None or not symbol.source_filename.endswith('.h')):
463 parameters = list(self._create_parameters(symbol, symbol.base_type))
464 name = self._strip_symbol(symbol)
465 macro = ast.FunctionMacro(name, parameters, symbol.ident)
466 macro.add_symbol_reference(symbol)
469 def _create_source_type(self, source_type, is_parameter=False):
470 assert source_type is not None
471 if source_type.type == CTYPE_VOID:
473 elif source_type.type == CTYPE_BASIC_TYPE:
474 value = source_type.name
475 elif source_type.type == CTYPE_TYPEDEF:
476 value = source_type.name
477 elif (source_type.type == CTYPE_POINTER or
478 # Array to pointer adjustment as per 6.7.6.3.
479 # This is performed only on the outermost array,
480 # so we don't forward is_parameter.
481 (source_type.type == CTYPE_ARRAY and is_parameter)):
482 value = self._create_source_type(source_type.base_type) + '*'
483 elif source_type.type == CTYPE_ARRAY:
484 return self._create_source_type(source_type.base_type)
489 def _create_complete_source_type(self, source_type, is_parameter=False):
490 assert source_type is not None
492 const = (source_type.type_qualifier & TYPE_QUALIFIER_CONST)
493 volatile = (source_type.type_qualifier & TYPE_QUALIFIER_VOLATILE)
495 if source_type.type == CTYPE_VOID:
497 elif source_type.type in [CTYPE_BASIC_TYPE,
502 value = source_type.name
504 value = 'const ' + value
506 value = 'volatile ' + value
508 elif (source_type.type == CTYPE_POINTER or
509 # Array to pointer adjustment as per 6.7.6.3.
510 # This is performed only on the outermost array,
511 # so we don't forward is_parameter.
512 (source_type.type == CTYPE_ARRAY and is_parameter)):
513 value = self._create_complete_source_type(source_type.base_type) + '*'
514 # TODO: handle pointer to function as a special case?
520 elif source_type.type == CTYPE_ARRAY:
521 return self._create_complete_source_type(source_type.base_type)
524 value = 'gconstpointer'
528 value = 'volatile ' + value
531 def _create_parameters(self, symbol, base_type):
532 for i, child in enumerate(base_type.child_list):
533 yield self._create_parameter(symbol, i, child)
535 def _synthesize_union_type(self, symbol, parent_symbol):
536 # Synthesize a named union so that it can be referenced.
537 parent_ident = parent_symbol.ident
538 # FIXME: Should split_ctype_namespaces handle the hidden case?
539 hidden = parent_ident.startswith('_')
541 parent_ident = parent_ident[1:]
542 matches = self.split_ctype_namespaces(parent_ident)
543 (namespace, parent_name) = matches[-1]
544 assert namespace and parent_name
546 parent_name = '_' + parent_name
547 fake_union = ast.Union("%s__%s__union" % (parent_name, symbol.ident))
548 # _parse_fields accesses <type>.base_type.child_list, so we have to
549 # pass symbol.base_type even though that refers to the array, not the
551 self._parse_fields(symbol.base_type, fake_union)
552 self._append_new_node(fake_union)
553 fake_type = ast.Type(
554 target_giname="%s.%s" % (namespace.name, fake_union.name))
557 def _create_member(self, symbol, parent_symbol=None):
558 source_type = symbol.base_type
559 if (source_type.type == CTYPE_POINTER
560 and symbol.base_type.base_type.type == CTYPE_FUNCTION):
561 node = self._create_callback(symbol, member=True)
562 elif source_type.type == CTYPE_STRUCT and source_type.name is None:
563 node = self._create_member_compound(ast.Record, symbol)
564 elif source_type.type == CTYPE_UNION and source_type.name is None:
565 node = self._create_member_compound(ast.Union, symbol)
567 # Special handling for fields; we don't have annotations on them
568 # to apply later, yet.
569 if source_type.type == CTYPE_ARRAY:
570 # Determine flattened array size and its element type.
572 while source_type.type == CTYPE_ARRAY:
573 for child in source_type.child_list:
574 if flattened_size is not None:
575 flattened_size *= child.const_int
578 flattened_size = None
579 source_type = source_type.base_type
581 # If the array contains anonymous unions, like in the GValue
582 # struct, we need to handle this specially. This is necessary
583 # to be able to properly calculate the size of the compound
584 # type (e.g. GValue) that contains this array, see
585 # <https://bugzilla.gnome.org/show_bug.cgi?id=657040>.
586 if source_type.type == CTYPE_UNION and source_type.name is None:
587 element_type = self._synthesize_union_type(symbol, parent_symbol)
589 ctype = self._create_source_type(source_type)
590 complete_ctype = self._create_complete_source_type(source_type)
591 element_type = self.create_type_from_ctype_string(ctype,
592 complete_ctype=complete_ctype)
593 ftype = ast.Array(None, element_type)
594 ftype.zeroterminated = False
595 ftype.size = flattened_size
597 ftype = self._create_type_from_base(symbol.base_type)
598 # ast.Fields are assumed to be read-write
599 # (except for Objects, see also glibtransformer.py)
600 node = ast.Field(symbol.ident, ftype,
601 readable=True, writable=True,
602 bits=symbol.const_int)
604 node.readable = False
605 node.writable = False
609 def _create_typedef(self, symbol):
610 ctype = symbol.base_type.type
611 if (ctype == CTYPE_POINTER and symbol.base_type.base_type.type == CTYPE_FUNCTION):
612 node = self._create_typedef_callback(symbol)
613 elif (ctype == CTYPE_FUNCTION):
614 node = self._create_typedef_callback(symbol)
615 elif (ctype == CTYPE_POINTER and symbol.base_type.base_type.type == CTYPE_STRUCT):
616 node = self._create_typedef_compound(ast.Record, symbol, disguised=True)
617 elif ctype == CTYPE_STRUCT:
618 node = self._create_typedef_compound(ast.Record, symbol)
619 elif ctype == CTYPE_UNION:
620 node = self._create_typedef_compound(ast.Union, symbol)
621 elif ctype == CTYPE_ENUM:
622 return self._create_enum(symbol)
623 elif ctype in (CTYPE_TYPEDEF,
627 name = self.strip_identifier(symbol.ident)
628 target = self._create_type_from_base(symbol.base_type)
629 if name in ast.type_names:
631 # https://bugzilla.gnome.org/show_bug.cgi?id=755882
632 if name.endswith('_autoptr'):
634 node = ast.Alias(name, target, ctype=symbol.ident)
635 node.add_symbol_reference(symbol)
637 raise NotImplementedError(
638 "symbol '%s' of type %s" % (symbol.ident, ctype_name(ctype)))
641 def _canonicalize_ctype(self, ctype):
642 # First look up the ctype including any pointers;
643 # a few type names like 'char*' have their own aliases
644 # and we need pointer information for those.
645 firstpass = ast.type_names.get(ctype)
647 # If we have a particular alias for this, skip deep
648 # canonicalization to prevent changing
649 # e.g. char* -> int8*
651 return firstpass.target_fundamental
653 if not ctype.endswith('*'):
656 # We have a pointer type.
657 # Strip the end pointer, canonicalize our base type
659 canonical_base = self._canonicalize_ctype(base)
661 # Append the pointer again
662 canonical = canonical_base + '*'
666 def _create_type_from_base(self, source_type, is_parameter=False, is_return=False):
667 ctype = self._create_source_type(source_type, is_parameter=is_parameter)
668 complete_ctype = self._create_complete_source_type(source_type, is_parameter=is_parameter)
669 const = ((source_type.type == CTYPE_POINTER) and
670 (source_type.base_type.type_qualifier & TYPE_QUALIFIER_CONST))
671 return self.create_type_from_ctype_string(ctype, is_const=const,
672 is_parameter=is_parameter, is_return=is_return,
673 complete_ctype=complete_ctype)
675 def _create_bare_container_type(self, base, ctype=None,
676 is_const=False, complete_ctype=None):
677 if base in ('GList', 'GSList', 'GLib.List', 'GLib.SList'):
678 if base in ('GList', 'GSList'):
679 name = 'GLib.' + base[1:]
682 return ast.List(name, ast.TYPE_ANY, ctype=ctype,
683 is_const=is_const, complete_ctype=complete_ctype)
684 elif base in ('GByteArray', 'GLib.ByteArray', 'GObject.ByteArray'):
685 return ast.Array('GLib.ByteArray', ast.TYPE_UINT8, ctype=ctype,
686 is_const=is_const, complete_ctype=complete_ctype)
687 elif base in ('GArray', 'GPtrArray',
688 'GLib.Array', 'GLib.PtrArray',
689 'GObject.Array', 'GObject.PtrArray'):
691 name = 'GLib.' + base.split('.', 1)[1]
693 name = 'GLib.' + base[1:]
694 return ast.Array(name, ast.TYPE_ANY, ctype=ctype,
695 is_const=is_const, complete_ctype=complete_ctype)
696 elif base in ('GHashTable', 'GLib.HashTable', 'GObject.HashTable'):
697 return ast.Map(ast.TYPE_ANY, ast.TYPE_ANY, ctype=ctype, is_const=is_const,
698 complete_ctype=complete_ctype)
701 def create_type_from_ctype_string(self, ctype, is_const=False,
702 is_parameter=False, is_return=False,
703 complete_ctype=None):
704 canonical = self._canonicalize_ctype(ctype)
705 base = canonical.replace('*', '')
707 # While gboolean and _Bool are distinct types, they used to be treated
708 # by scanner as exactly the same one. In general this is incorrect
709 # because of different ABI, but this usually works fine,
710 # so for backward compatibility lets continue for now:
711 # https://gitlab.gnome.org/GNOME/gobject-introspection/merge_requests/24#note_92792
712 if canonical in ('_Bool', 'bool'):
713 canonical = 'gboolean'
716 # Special default: char ** -> ast.Array, same for GStrv
717 if (is_return and canonical == 'utf8*') or base == 'GStrv':
718 bare_utf8 = ast.TYPE_STRING.clone()
719 bare_utf8.ctype = None
720 return ast.Array(None, bare_utf8, ctype=ctype,
721 is_const=is_const, complete_ctype=complete_ctype)
723 fundamental = ast.type_names.get(base)
724 if fundamental is not None:
725 return ast.Type(target_fundamental=fundamental.target_fundamental,
727 is_const=is_const, complete_ctype=complete_ctype)
728 container = self._create_bare_container_type(base, ctype=ctype, is_const=is_const,
729 complete_ctype=complete_ctype)
732 return ast.Type(ctype=ctype, is_const=is_const, complete_ctype=complete_ctype)
734 def _create_parameter(self, parent_symbol, index, symbol):
735 if symbol.type == CSYMBOL_TYPE_ELLIPSIS:
736 return ast.Parameter('...', ast.Varargs())
739 ptype = self._create_type_from_base(symbol.base_type, is_parameter=True)
743 if symbol.ident is None:
744 if symbol.base_type and symbol.base_type.type != CTYPE_VOID:
745 message.warn_symbol(parent_symbol, "missing parameter name; undocumentable")
746 ident = 'arg%d' % (index, )
750 return ast.Parameter(ident, ptype)
752 def _create_return(self, source_type):
753 typeval = self._create_type_from_base(source_type, is_return=True)
754 return ast.Return(typeval)
756 def _create_const(self, symbol):
757 if symbol.ident.startswith('_'):
760 # Don't create constants for non-public things
761 # http://bugzilla.gnome.org/show_bug.cgi?id=572790
762 if (symbol.source_filename is None or not symbol.source_filename.endswith('.h')):
764 name = self._strip_symbol(symbol)
765 if symbol.const_string is not None:
766 typeval = ast.TYPE_STRING
767 value = symbol.const_string
768 elif symbol.const_int is not None:
769 if symbol.base_type is not None:
770 typeval = self._create_type_from_base(symbol.base_type)
772 typeval = ast.TYPE_INT
774 self._resolve_type_from_ctype(unaliased)
775 if typeval.target_giname and typeval.ctype:
776 target = self.lookup_giname(typeval.target_giname)
777 target = self.resolve_aliases(target)
778 if isinstance(target, ast.Type):
780 if unaliased == ast.TYPE_UINT64:
781 value = str(symbol.const_int % 2 ** 64)
782 elif unaliased == ast.TYPE_UINT32:
783 value = str(symbol.const_int % 2 ** 32)
784 elif unaliased == ast.TYPE_UINT16:
785 value = str(symbol.const_int % 2 ** 16)
786 elif unaliased == ast.TYPE_UINT8:
787 value = str(symbol.const_int % 2 ** 16)
789 value = str(symbol.const_int)
790 elif symbol.const_boolean is not None:
791 typeval = ast.TYPE_BOOLEAN
792 value = "true" if symbol.const_boolean else "false"
793 elif symbol.const_double is not None:
794 typeval = ast.TYPE_DOUBLE
795 value = '%f' % (symbol.const_double, )
797 raise AssertionError()
799 const = ast.Constant(name, typeval, value,
801 const.add_symbol_reference(symbol)
804 def _create_typedef_compound(self, compound_class, symbol, disguised=False):
805 name = self.strip_identifier(symbol.ident)
806 assert symbol.base_type
807 if symbol.base_type.name:
808 tag_name = symbol.base_type.name
812 # If the struct already exists in the tag namespace, use it.
813 if tag_name in self._tag_ns:
814 compound = self._tag_ns[tag_name]
816 # If the struct name is set it means the struct has already been
817 # promoted from the tag namespace to the main namespace by a
818 # prior typedef struct. If we get here it means this is another
819 # typedef of that struct. Instead of creating an alias to the
820 # primary typedef that has been promoted, we create a new Record
821 # with shared fields. This handles the case where we want to
822 # give structs like GInitiallyUnowned its own Record:
823 # typedef struct _GObject GObject;
824 # typedef struct _GObject GInitiallyUnowned;
825 # See: http://bugzilla.gnome.org/show_bug.cgi?id=569408
826 new_compound = compound_class(name, symbol.ident, tag_name=tag_name)
827 new_compound.fields = compound.fields
828 new_compound.add_symbol_reference(symbol)
831 # If the struct does not have its name set, it exists only in
832 # the tag namespace. Set it here and return it which will
833 # promote it to the main namespace. Essentially the first
834 # typedef for a struct clobbers its name and ctype which is what
835 # will be visible to GI.
837 compound.ctype = symbol.ident
839 # Create a new struct with a typedef name and tag name when available.
840 # Structs with a typedef name are promoted into the main namespace
841 # by it being returned to the "parse" function and are also added to
842 # the tag namespace if it has a tag_name set.
843 compound = compound_class(name, symbol.ident, disguised=disguised, tag_name=tag_name)
845 # Force the struct as disguised for now since we do not yet know
846 # if it has fields that will be parsed. Note that this is using
847 # an erroneous definition of disguised and we should eventually
848 # only look at the field count when needed.
849 compound.disguised = True
851 # Case where we have an anonymous struct which is typedef'd:
852 # typedef struct {...} Struct;
853 # we need to parse the fields because we never get a struct
854 # in the tag namespace which is normally where fields are parsed.
855 self._parse_fields(symbol, compound)
857 compound.add_symbol_reference(symbol)
860 def _create_tag_ns_compound(self, compound_class, symbol):
861 # Get or create a struct from C's tag namespace
862 if symbol.ident in self._tag_ns:
863 compound = self._tag_ns[symbol.ident]
865 compound = compound_class(None, symbol.ident, tag_name=symbol.ident)
867 # Make sure disguised is False as we are now about to parse the
868 # fields of the real struct.
869 compound.disguised = False
870 # Fields may need to be parsed in either of the above cases because the
871 # Record can be created with a typedef prior to the struct definition.
872 self._parse_fields(symbol, compound)
873 compound.add_symbol_reference(symbol)
876 def _create_member_compound(self, compound_class, symbol):
877 compound = compound_class(symbol.ident, symbol.ident)
878 self._parse_fields(symbol, compound)
879 compound.add_symbol_reference(symbol)
882 def _create_typedef_callback(self, symbol):
883 callback = self._create_callback(symbol)
888 def _parse_fields(self, symbol, compound):
889 for child in symbol.base_type.child_list:
890 child_node = self._traverse_one(child, parent_symbol=symbol)
893 if isinstance(child_node, ast.Field):
896 field = ast.Field(child.ident, None, True, False,
897 anonymous_node=child_node)
898 compound.fields.append(field)
900 def _create_callback(self, symbol, member=False):
901 if (symbol.base_type.type == CTYPE_FUNCTION): # function
902 paramtype = symbol.base_type
903 retvaltype = symbol.base_type.base_type
904 elif (symbol.base_type.type == CTYPE_POINTER): # function pointer
905 paramtype = symbol.base_type.base_type
906 retvaltype = symbol.base_type.base_type.base_type
907 parameters = list(self._create_parameters(symbol, paramtype))
908 retval = self._create_return(retvaltype)
910 # Mark the 'user_data' arguments
911 for i, param in enumerate(parameters):
912 if (param.type.target_fundamental == 'gpointer' and param.argname == 'user_data'):
913 param.closure_name = param.argname
917 elif symbol.ident.find('_') > 0:
918 name = self._strip_symbol(symbol)
920 name = self.strip_identifier(symbol.ident)
921 callback = ast.Callback(name, retval, parameters, False,
923 callback.add_symbol_reference(symbol)
927 def create_type_from_user_string(self, typestr):
928 """Parse a C type string (as might be given from an
929 annotation) and resolve it. For compatibility, we can consume
930 both GI type string (utf8, Foo.Bar) style, as well as C (char *, FooBar) style.
932 Note that type resolution may not succeed."""
934 container = self._create_bare_container_type(typestr)
938 typeval = self._namespace.type_from_name(typestr)
940 typeval = self.create_type_from_ctype_string(typestr)
942 self.resolve_type(typeval)
944 # Explicitly clear out the c_type; there isn't one in this case.
948 def _resolve_type_from_ctype_all_namespaces(self, typeval, pointer_stripped):
949 # If we can't determine the namespace from the type name,
950 # fall back to trying all of our includes. An example of this is mutter,
951 # which has nominal namespace of "Meta", but a few classes are
952 # "Mutter". We don't export that data in introspection currently.
953 # Basically the library should be fixed, but we'll hack around it here.
954 for namespace in self._parsed_includes.values():
955 target = namespace.get_by_ctype(pointer_stripped)
957 typeval.target_giname = '%s.%s' % (namespace.name, target.name)
961 def _resolve_type_from_ctype(self, typeval):
962 assert typeval.ctype is not None
963 pointer_stripped = typeval.ctype.replace('*', '')
965 matches = self.split_ctype_namespaces(pointer_stripped)
967 return self._resolve_type_from_ctype_all_namespaces(typeval, pointer_stripped)
968 for namespace, name in matches:
969 target = namespace.get(name)
971 target = namespace.get_by_ctype(pointer_stripped)
973 typeval.target_giname = '%s.%s' % (namespace.name, target.name)
977 def _resolve_type_from_gtype_name(self, typeval):
978 assert typeval.gtype_name is not None
979 for ns in self._iter_namespaces():
980 node = ns.type_names.get(typeval.gtype_name, None)
982 typeval.target_giname = '%s.%s' % (ns.name, node.name)
986 def _resolve_type_internal(self, typeval):
987 if isinstance(typeval, (ast.Array, ast.List)):
988 return self.resolve_type(typeval.element_type)
989 elif isinstance(typeval, ast.Map):
990 key_resolved = self.resolve_type(typeval.key_type)
991 value_resolved = self.resolve_type(typeval.value_type)
992 return key_resolved and value_resolved
993 elif typeval.resolved:
996 return self._resolve_type_from_ctype(typeval)
997 elif typeval.gtype_name:
998 return self._resolve_type_from_gtype_name(typeval)
1000 def resolve_type(self, typeval):
1001 if not self._resolve_type_internal(typeval):
1004 if typeval.target_fundamental or typeval.target_foreign:
1007 assert typeval.target_giname is not None
1010 type_ = self.lookup_giname(typeval.target_giname)
1015 typeval.target_giname = None
1017 return typeval.resolved
1019 def resolve_aliases(self, typenode):
1020 """Removes all aliases from typenode, returns first non-alias
1021 in the typenode alias chain. Returns typenode argument if it
1023 while isinstance(typenode, ast.Alias):
1024 if typenode.target.target_giname is not None:
1025 typenode = self.lookup_giname(typenode.target.target_giname)
1026 elif typenode.target.target_fundamental is not None:
1027 typenode = typenode.target