1 /* GObject introspection: struct definitions for the binary
2 * typelib format, validation
4 * Copyright (C) 2005 Matthias Clasen
5 * Copyright (C) 2008,2009 Red Hat, Inc.
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
23 #ifndef __G_TYPELIB_H__
24 #define __G_TYPELIB_H__
27 #include "girepository.h"
33 * @short_description: Layout and accessors for typelib
36 * The "typelib" is a binary, readonly, memory-mappable database
37 * containing reflective information about a GObject library.
39 * The format of GObject typelib is strongly influenced by the Mozilla XPCOM
42 * Some of the differences to XPCOM include:
43 * - Type information is stored not quite as compactly (XPCOM stores it inline
44 * in function descriptions in variable-sized blobs of 1 to n bytes. We store
45 * 16 bits of type information for each parameter, which is enough to encode
46 * simple types inline. Complex (e.g. recursive) types are stored out of line
47 * in a separate list of types.
48 * - String and complex type data is stored outside of typelib entry blobs,
49 * references are stored as offsets relative to the start of the typelib.
50 * One possibility is to store the strings and types in a pools at the end
53 * The typelib has the following general format.
55 * typelib ::= header, directory, blobs, attributes, attributedata
57 * directory ::= list of entries
59 * entry ::= blob type, name, namespace, offset
60 * blob ::= function|callback|struct|boxed|enum|flags|object|interface|constant|errordomain|union
61 * attributes ::= list of attributes, sorted by offset
62 * attribute ::= offset, key, value
63 * attributedata ::= string data for attributes
67 * We describe the fragments that make up the typelib in the form of C structs
68 * (although some fall short of being valid C structs since they contain multiple
76 - Rename class_struct to gtype_struct, add to interfaces
79 - Add padding to structures
82 - Add class struct concept to ObjectBlob
83 - Add is_class_struct bit to StructBlob
89 - rename metadata to typelib, to follow xpcom terminology
94 + add [u]int, [u]long, [s]size_t
95 + rename string to utf8, add filename
96 - allow blob_type to be zero for non-local entries
102 - drop short_name for ValueBlob
105 - make inline types 4 bytes after all, remove header->types and allow
106 types to appear anywhere
107 - allow error domains in the directory
111 - drop comments about _GOBJ_METADATA
112 - drop string pool, strings can appear anywhere
113 - use 'blob' as collective name for the various blob types
114 - rename 'type' field in blobs to 'blob_type'
115 - rename 'type_name' and 'type_init' fields to 'gtype_name', 'gtype_init'
116 - shrink directory entries to 12 bytes
117 - merge struct and boxed blobs
118 - split interface blobs into enum, object and interface blobs
119 - add an 'unregistered' flag to struct and enum blobs
120 - add a 'wraps_vfunc' flag to function blobs and link them to
122 - restrict value blobs to only occur inside enums and flags again
123 - add constant blobs, allow them toplevel, in interfaces and in objects
124 - rename 'receiver_owns_value' and 'receiver_owns_container' to
125 'transfer_ownership' and 'transfer_container_ownership'
126 - add a 'struct_offset' field to virtual function and field blobs
127 - add 'dipper' and 'optional' flags to arg blobs
128 - add a 'true_stops_emit' flag to signal blobs
129 - add variable blob sizes to header
130 - store offsets to signature blobs instead of including them directly
131 - change the type offset to be measured in words rather than bytes
137 * Identifying prefix for the typelib. This was inspired by XPCOM,
138 * which in turn borrowed from PNG.
140 #define G_IR_MAGIC "GOBJ\nMETADATA\r\n\032"
144 * @BLOB_TYPE_INVALID: Should not appear in code
145 * @BLOB_TYPE_FUNCTION: A #FunctionBlob
146 * @BLOB_TYPE_CALLBACK: A #CallbackBlob
147 * @BLOB_TYPE_STRUCT: A #StructBlob
148 * @BLOB_TYPE_BOXED: Can be either a #StructBlob or #UnionBlob
149 * @BLOB_TYPE_ENUM: An #EnumBlob
150 * @BLOB_TYPE_FLAGS: An #EnumBlob
151 * @BLOB_TYPE_OBJECT: An #ObjectBlob
152 * @BLOB_TYPE_INTERFACE: An #InterfaceBlob
153 * @BLOB_TYPE_CONSTANT: A #ConstantBlob
154 * @BLOB_TYPE_ERROR_DOMAIN: A #ErrorDomainBlob
155 * @BLOB_TYPE_UNION: A #UnionBlob
157 * The integral value of this enumeration appears in each "Blob"
158 * component of a typelib to identify its type.
171 BLOB_TYPE_ERROR_DOMAIN,
175 #define BLOB_IS_REGISTERED_TYPE(blob) \
176 ((blob)->blob_type == BLOB_TYPE_STRUCT || \
177 (blob)->blob_type == BLOB_TYPE_UNION || \
178 (blob)->blob_type == BLOB_TYPE_ENUM || \
179 (blob)->blob_type == BLOB_TYPE_OBJECT || \
180 (blob)->blob_type == BLOB_TYPE_INTERFACE)
184 * @magic: See #G_IR_MAGIC.
185 * @major_version: The version of the typelib format. Minor version changes indicate
186 * compatible changes and should still allow the typelib to be parsed
187 * by a parser designed for the same major_version.
188 * @minor_version: See major_version.
189 * @n_entries: The number of entries in the directory.
190 * @n_local_entries: The number of entries referring to blobs in this typelib. The
191 * local entries must occur before the unresolved entries.
192 * @directory: Offset of the directory in the typelib.
193 * @n_attributes: Number of attribute blocks
194 * @attributes: Offset of the list of attributes in the typelib.
195 * @dependencies: Offset of a single string, which is the list of
196 * dependencies, separated by the '|' character. The
197 * dependencies are required in order to avoid having programs
198 * consuming a typelib check for an "Unresolved" type return
199 * from every API call.
200 * @size: The size in bytes of the typelib.
201 * @namespace: Offset of the namespace string in the typelib.
202 * @nsversion: Offset of the namespace version string in the typelib.
203 * @shared_library: This field is the set of shared libraries associated
204 * with the typelib. The entries are separated by the '|' (pipe) character.
205 * @entry_blob_size: The sizes of fixed-size blobs. Recording this information here
206 * allows to write parser which continue to work if the format is
207 * extended by adding new fields to the end of the fixed-size blobs.
208 * @function_blob_size: See above.
209 * @callback_blob_size: See above.
210 * @signal_blob_size: See above.
211 * @vfunc_blob_size: See above.
212 * @arg_blob_size: See above.
213 * @property_blob_size: See above.
214 * @field_blob_size: See above.
215 * @value_blob_size: See above.
216 * @attribute_blob_size: See above.
217 * @constant_blob_size: See above.
218 * @object_blob_size: See above.
219 * @union_blob_size: See above.
220 * @signature_blob_size: See above.
221 * @enum_blob_size: See above.
222 * @struct_blob_size: See above.
223 * @error_domain_blob_size: See above.
224 * @interface_blob_size: For variable-size blobs, the size of the struct up to the first
225 * flexible array member. Recording this information here allows to
226 * write parser which continue to work if the format is extended by
227 * adding new fields before the first flexible array member in
228 * variable-size blobs.
230 * The header structure appears exactly once at the beginning of a typelib. It is a
231 * collection of meta-information, such as the number of entries and dependencies.
235 guint8 major_version;
236 guint8 minor_version;
239 guint16 n_local_entries;
241 guint32 n_attributes;
244 guint32 dependencies;
249 guint32 shared_library;
252 guint16 entry_blob_size;
253 guint16 function_blob_size;
254 guint16 callback_blob_size;
255 guint16 signal_blob_size;
256 guint16 vfunc_blob_size;
257 guint16 arg_blob_size;
258 guint16 property_blob_size;
259 guint16 field_blob_size;
260 guint16 value_blob_size;
261 guint16 attribute_blob_size;
262 guint16 constant_blob_size;
263 guint16 error_domain_blob_size;
265 guint16 signature_blob_size;
266 guint16 enum_blob_size;
267 guint16 struct_blob_size;
268 guint16 object_blob_size;
269 guint16 interface_blob_size;
270 guint16 union_blob_size;
277 * @blob_type: A #GTypelibBlobType
278 * @local: Whether this entry refers to a blob in this typelib.
279 * @name: The name of the entry.
280 * @offset: If is_local is set, this is the offset of the blob in the typelib.
281 * Otherwise, it is the offset of the namespace in which the blob has
282 * to be looked up by name.
284 * References to directory entries are stored as 1-based 16-bit indexes.
286 * All blobs pointed to by a directory entry start with the same layout for
287 * the first 8 bytes (the reserved flags may be used by some blob types)
293 guint16 reserved :15;
301 * @is_pointer: Indicates whether the type is passed by reference.
303 * @offset: Offset relative to header->types that points to a TypeBlob.
304 * Unlike other offsets, this is in words (ie 32bit units) rather
307 * The SimpleTypeBlob is the general purpose "reference to a type" construct, used
308 * in method parameters, returns, callback definitions, fields, constants, etc.
309 * It's actually just a 32 bit integer which you can see from the union definition.
310 * This is for efficiency reasons, since there are so many references to types.
312 * SimpleTypeBlob is divided into two cases; first, if "reserved" and "reserved2", the
313 * type tag for a basic type is embedded in the "tag" bits. This allows e.g.
314 * GI_TYPE_TAG_UTF8, GI_TYPE_TAG_INT and the like to be embedded directly without
315 * taking up extra space.
317 * References to "interfaces" (objects, interfaces) are more complicated; In this case,
318 * the integer is actually an offset into the directory (see above). Because the header
319 * is larger than 2^8=256 bits, all offsets will have one of the upper 24 bits set.
336 * @name: A suggested name for the parameter.
337 * @in: The parameter is an input to the function
338 * @out: The parameter is used to return an output of the function.
339 * Parameters can be both in and out. Out parameters implicitly
340 * add another level of indirection to the parameter type. Ie if
341 * the type is uint32 in an out parameter, the function actually
343 * @dipper: The parameter is a pointer to a struct or object that will
344 * receive an output of the function.
345 * @allow_none: Only meaningful for types which are passed as pointers.
346 * For an in parameter, indicates if it is ok to pass NULL in, for
347 * an out parameter, whether it may return NULL. Note that NULL is a
348 * valid GList and GSList value, thus allow_none will normally be set
349 * for parameters of these types.
350 * @optional: For an out parameter, indicates that NULL may be passed in
351 * if the value is not needed.
352 * @transfer_ownership: For an in parameter, indicates that the function takes over
353 * ownership of the parameter value. For an out parameter, it
354 * indicates that the caller is responsible for freeing the return
356 * @transfer_container_ownership: For container types, indicates that the
357 * ownership of the container, but not of its contents is transferred. This is typically the case
358 * for out parameters returning lists of statically allocated things.
359 * @is_return_value: The parameter should be considered the return value of the function.
360 * Only out parameters can be marked as return value, and there can be
361 * at most one per function call. If an out parameter is marked as
362 * return value, the actual return value of the function should be
363 * either void or a boolean indicating the success of the call.
364 * @scope: A #GIScopeType. If the parameter is of a callback type, this denotes the scope
365 * of the user_data and the callback function pointer itself
366 * (for languages that emit code at run-time).
367 * @closure: Index of the closure (user_data) parameter associated with the callback,
369 * @destroy: Index of the destroy notfication callback parameter associated with
370 * the callback, or -1.
371 * @arg_type: Describes the type of the parameter. See details below.
373 * Types are specified by four bytes. If the three high bytes are zero,
374 * the low byte describes a basic type, otherwise the 32bit number is an
375 * offset which points to a TypeBlob.
383 guint allow_none : 1;
385 guint transfer_ownership : 1;
386 guint transfer_container_ownership : 1;
387 guint return_value : 1;
394 SimpleTypeBlob arg_type;
399 * @return_type: Describes the type of the return value. See details below.
400 * @may_return_null: Only relevant for pointer types. Indicates whether the caller
401 * must expect NULL as a return value.
402 * @caller_owns_return_value: If set, the caller is responsible for freeing the return value
403 * if it is no longer needed.
404 * @caller_owns_return_container: This flag is only relevant if the return type is a container type.
405 * If the flag is set, the caller is resonsible for freeing the
406 * container, but not its contents.
407 * @n_arguments: The number of arguments that this function expects, also the length
408 * of the array of ArgBlobs.
409 * @arguments: An array of ArgBlob for the arguments of the function.
412 SimpleTypeBlob return_type;
414 guint16 may_return_null : 1;
415 guint16 caller_owns_return_value : 1;
416 guint16 caller_owns_return_container : 1;
417 guint16 reserved :13;
426 * @blob_type: A #GTypelibBlobType
427 * @deprecated: Whether the blob is deprecated.
428 * @name: The name of the blob.
430 * The #CommonBlob is shared between #FunctionBlob,
431 * #CallbackBlob, #SignalBlob.
434 guint16 blob_type; /* 1 */
436 guint16 deprecated : 1;
437 guint16 reserved :15;
444 * @blob_Type: #BLOB_TYPE_FUNCTION
445 * @symbol: The symbol which can be used to obtain the function pointer with
447 * @deprecated: The function is deprecated.
448 * @setter: The function is a setter for a property. Language bindings may
449 * prefer to not bind individual setters and rely on the generic
451 * @getter: The function is a getter for a property. Language bindings may
452 * prefer to not bind individual getters and rely on the generic
454 * @constructor:The function acts as a constructor for the object it is contained
456 * @wraps_vfunc: The function is a simple wrapper for a virtual function.
457 * @index: Index of the property that this function is a setter or getter of
458 * in the array of properties of the containing interface, or index
459 * of the virtual function that this function wraps.
460 * @signature: Offset of the SignatureBlob describing the parameter types and the
462 * @is_static: The function is a "static method"; in other words it's a pure
463 * function whose name is conceptually scoped to the object.
466 guint16 blob_type; /* 1 */
468 guint16 deprecated : 1;
471 guint16 constructor : 1;
472 guint16 wraps_vfunc : 1;
475 /* Note the bits above need to match CommonBlob
476 * and are thus exhausted, extend things using
477 * the reserved block below. */
483 guint16 is_static : 1;
484 guint16 reserved : 15;
485 guint16 reserved2 : 16;
490 * @signature: Offset of the #SignatureBlob describing the parameter types and the
494 guint16 blob_type; /* 2 */
496 guint16 deprecated : 1;
497 guint16 reserved :15;
505 * @pointer: Whether this type represents an indirection
507 * @interface: Index of the directory entry for the interface.
509 * If the interface is an enum of flags type, is_pointer is 0, otherwise it is 1.
521 * @zero_terminated: Indicates that the array must be terminated by a suitable #NULL
523 * @has_length: Indicates that length points to a parameter specifying the length
524 * of the array. If both has_length and zero_terminated are set, the
525 * convention is to pass -1 for the length if the array is
527 * @length: The index of the parameter which is used to pass the length of the
528 * array. The parameter must be an integer type and have the same
529 * direction as this one.
530 * @type: The type of the array elements.
532 * Arrays are passed by reference, thus is_pointer is always 1.
539 guint16 zero_terminated :1;
540 guint16 has_length :1;
542 guint16 reserved2 :5;
554 * @n_types: The number of parameter types to follow.
555 * @type: Describes the type of the list elements.
566 SimpleTypeBlob type[];
571 * @n_domains: The number of domains to follow
572 * @domains: Indices of the directory entries for the error domains
587 * @get_quark: The symbol name of the function which must be called to obtain the
588 * GQuark for the error domain.
589 * @error_codes: Index of the InterfaceBlob describing the enumeration which lists
590 * the possible error codes.
593 guint16 blob_type; /* 10 */
595 guint16 deprecated : 1;
596 guint16 reserved :15;
607 * @deprecated: Whether this value is deprecated
608 * @value: The numerical value
609 * @name: Name of blob
611 * Values commonly occur in enums and flags.
614 guint32 deprecated : 1;
615 guint32 reserved :31;
622 * @name: The name of the field.
624 * @writable: How the field may be accessed.
625 * @has_embedded_type: An anonymous type follows the FieldBlob.
626 * @bits: If this field is part of a bitfield, the number of bits which it
629 * The offset of the field in the struct. The value 0xFFFF indicates
630 * that the struct offset is unknown.
631 * @type: The type of the field.
638 guint8 has_embedded_type :1;
642 guint16 struct_offset;
650 * RegisteredTypeBlob:
651 * @gtype_name: The name under which the type is registered with GType.
652 * @gtype_init: The symbol name of the get_type() function which registers the type.
656 guint16 deprecated : 1;
657 guint16 unregistered : 1;
658 guint16 reserved :14;
663 } RegisteredTypeBlob;
667 * @blob_type: #BLOB_TYPE_STRUCT
668 * @deprecated: Whether this structure is deprecated
669 * @unregistered: If this is set, the type is not registered with GType.
670 * @alignment: The byte boundary that the struct is aligned to in memory
671 * @is_gtype_struct: Whether this structure is the class or interface layout for a GObject
672 * @foreign: If the type is foreign, eg if it's expected to be overridden by
673 * a native language binding instead of relying of introspected bindings.
674 * @size: The size of the struct in bytes.
675 * @gtype_name: String name of the associated #GType
676 * @gtype_init: String naming the symbol which gets the runtime #GType
678 * @n_functions: The lengths of the arrays.
679 * @fields: An array of n_fields FieldBlobs.
680 * @functions: An array of n_functions FunctionBlobs. The described functions
681 * should be considered as methods of the struct.
686 guint16 deprecated : 1;
687 guint16 unregistered : 1;
688 guint16 is_gtype_struct : 1;
689 guint16 alignment : 6;
691 guint16 reserved : 6;
707 /* variable-length parts of the blob */
709 FunctionBlob methods[];
715 * @unregistered: If this is set, the type is not registered with GType.
716 * @discriminated: Is set if the union is discriminated
717 * @alignment: The byte boundary that the union is aligned to in memory
718 * @size: The size of the union in bytes.
719 * @gtype_name: String name of the associated #GType
720 * @gtype_init: String naming the symbol which gets the runtime #GType
721 * @n_fields: Length of the arrays
722 * @discriminator_offset: Offset from the beginning of the union where the
723 * discriminator of a discriminated union is located.
724 * The value 0xFFFF indicates that the discriminator offset
726 * @discriminator_type: Type of the discriminator
727 * @discriminator_values: On discriminator value per field
728 * @fields: Array of FieldBlobs describing the alternative branches of the union
732 guint16 deprecated : 1;
733 guint16 unregistered : 1;
734 guint16 discriminated : 1;
735 guint16 alignment : 6;
736 guint16 reserved : 7;
750 gint32 discriminator_offset;
751 SimpleTypeBlob discriminator_type;
755 FunctionBlob functions[];
756 ConstantBlob discriminator_values[]
762 * @unregistered: If this is set, the type is not registered with GType.
763 * @storage_type: The tag of the type used for the enum in the C ABI
764 * (will be a signed or unsigned integral type)
765 * @gtype_name: String name of the associated #GType
766 * @gtype_init: String naming the symbol which gets the runtime #GType
767 * @n_values: The lengths of the values arrays.
768 * @values: Describes the enum values.
773 guint16 deprecated : 1;
774 guint16 unregistered : 1;
775 guint16 storage_type : 5;
776 guint16 reserved : 9;
793 * @name: The name of the property.
797 * @construct_only: The ParamFlags used when registering the property.
798 * @type: Describes the type of the property.
803 guint32 deprecated : 1;
804 guint32 readable : 1;
805 guint32 writable : 1;
806 guint32 construct : 1;
807 guint32 construct_only : 1;
808 guint32 reserved :27;
817 * @name: The name of the signal.
824 * @no_hooks: The flags used when registering the signal.
825 * @has_class_closure: Set if the signal has a class closure.
826 * @true_stops_emit: Whether the signal has true-stops-emit semantics
827 * @class_closure: The index of the class closure in the list of virtual functions
828 * of the object or interface on which the signal is defined.
829 * @signature: Offset of the SignatureBlob describing the parameter types and the
833 guint16 deprecated : 1;
834 guint16 run_first : 1;
835 guint16 run_last : 1;
836 guint16 run_cleanup : 1;
837 guint16 no_recurse : 1;
838 guint16 detailed : 1;
840 guint16 no_hooks : 1;
841 guint16 has_class_closure : 1;
842 guint16 true_stops_emit : 1;
843 guint16 reserved : 6;
845 guint16 class_closure;
856 * @name: The name of the virtual function.
857 * @must_chain_up: If set, every implementation of this virtual function must
858 * chain up to the implementation of the parent class.
859 * @must_be_implemented: If set, every derived class must override this virtual function.
860 * @must_not_be_implemented: If set, derived class must not override this virtual function.
861 * @class_closure: Set if this virtual function is the class closure of a signal.
862 * @signal: The index of the signal in the list of signals of the object or
863 * interface to which this virtual function belongs.
864 * @struct_offset: The offset of the function pointer in the class struct. The value
865 * 0xFFFF indicates that the struct offset is unknown.
866 * @invoker: If a method invoker for this virtual exists, this is the offset in the
867 * class structure of the method. If no method is known, this value will be 0x3ff.
869 * Offset of the SignatureBlob describing the parameter types and the
875 guint16 must_chain_up : 1;
876 guint16 must_be_implemented : 1;
877 guint16 must_not_be_implemented : 1;
878 guint16 class_closure : 1;
879 guint16 reserved :12;
882 guint16 struct_offset;
883 guint16 invoker : 10; /* Number of bits matches @index in FunctionBlob */
884 guint16 reserved2 : 6;
892 * @blob_type: #BLOB_TYPE_OBJECT
893 * @gtype_name: String name of the associated #GType
894 * @gtype_init: String naming the symbol which gets the runtime #GType
895 * @parent: The directory index of the parent type. This is only set for
896 * objects. If an object does not have a parent, it is zero.
903 * @n_constants: The lengths of the arrays.Up to 16bits of padding may be inserted
904 * between the arrays to ensure that they start on a 32bit boundary.
905 * @interfaces: An array of indices of directory entries for the implemented
907 * @fields: Describes the fields.
908 * @methods: Describes the methods, constructors, setters and getters.
909 * @properties: Describes the properties.
910 * @signals: Describes the signals.
911 * @vfuncs: Describes the virtual functions.
912 * @constants: Describes the constants.
915 guint16 blob_type; /* 7 */
916 guint16 deprecated : 1;
917 guint16 abstract : 1;
918 guint16 reserved :14;
925 guint16 gtype_struct;
927 guint16 n_interfaces;
929 guint16 n_properties;
939 guint16 interfaces[];
942 /* variable-length parts of the blob */
944 PropertyBlob properties[];
945 FunctionBlob methods[];
946 SignalBlob signals[];
948 ConstantBlob constants[];
954 * @gtype_struct: Name of the interface "class" C structure
955 * @n_prerequisites: Number of prerequisites
956 * @n_properties: Number of properties
957 * @n_methods: Number of methods
958 * @n_signals: Number of signals
959 * @n_vfuncs: Number of virtual functions
960 * @n_constants: The lengths of the arrays.
961 * Up to 16bits of padding may be inserted between the arrays to ensure that they
962 * start on a 32bit boundary.
963 * @prerequisites: An array of indices of directory entries for required interfaces.
964 * @methods: Describes the methods, constructors, setters and getters.
965 * @properties: Describes the properties.
966 * @signals: Describes the signals.
967 * @vfuncs: Describes the virtual functions.
968 * @constants: Describes the constants.
972 guint16 deprecated : 1;
973 guint16 reserved :15;
978 guint16 gtype_struct;
980 guint16 n_prerequisites;
981 guint16 n_properties;
990 guint16 prerequisites[];
993 /* variable-length parts of the blob */
994 PropertyBlob properties[];
995 FunctionBlob methods[];
996 SignalBlob signals[];
998 ConstantBlob constants[];
1004 * @type: The type of the value. In most cases this should be a numeric
1006 * @size: The size of the value in bytes.
1007 * @offset: The offset of the value in the typelib.
1011 guint16 deprecated : 1;
1012 guint16 reserved :15;
1015 SimpleTypeBlob type;
1025 * @offset: The offset of the typelib entry to which this attribute refers.
1026 * Attributes are kept sorted by offset, so that the attributes
1027 * of an entry can be found by a binary search.
1028 * @name: The name of the attribute, a string.
1029 * @value: The value of the attribute (also a string)
1040 gboolean owns_memory;
1043 gboolean open_attempted;
1046 DirEntry *g_typelib_get_dir_entry (GTypelib *typelib,
1049 void g_typelib_check_sanity (void);
1051 #define g_typelib_get_string(typelib,offset) ((const gchar*)&(typelib->data)[(offset)])
1056 G_TYPELIB_ERROR_INVALID,
1057 G_TYPELIB_ERROR_INVALID_HEADER,
1058 G_TYPELIB_ERROR_INVALID_DIRECTORY,
1059 G_TYPELIB_ERROR_INVALID_ENTRY,
1060 G_TYPELIB_ERROR_INVALID_BLOB
1063 #define G_TYPELIB_ERROR (g_typelib_error_quark ())
1065 GQuark g_typelib_error_quark (void);
1067 gboolean g_typelib_validate (GTypelib *typelib,
1073 #endif /* __G_TYPELIB_H__ */