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author | Johan Dahlin <johan@gnome.org> | 2010-06-06 13:15:14 -0300 |
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committer | Johan Dahlin <johan@gnome.org> | 2010-06-06 13:27:12 -0300 |
commit | 900a2a4a51ddc956547e7d20c35fcee3ff1c499c (patch) | |
tree | dcf9745c51cccef1aeabcf34d0936ba9b9aa67bb /girepository/gifieldinfo.c | |
parent | 378983df54a52c7cd6c1addea9c2f9536298c542 (diff) | |
download | gobject-introspection-900a2a4a51ddc956547e7d20c35fcee3ff1c499c.tar.gz |
[gfield] Move over field set/get impl.
Move over the GIFieldInfo set/get value implementation
over to gifieldinfo.c
Diffstat (limited to 'girepository/gifieldinfo.c')
-rw-r--r-- | girepository/gifieldinfo.c | 411 |
1 files changed, 411 insertions, 0 deletions
diff --git a/girepository/gifieldinfo.c b/girepository/gifieldinfo.c index a04124a0..d6f2da98 100644 --- a/girepository/gifieldinfo.c +++ b/girepository/gifieldinfo.c @@ -24,6 +24,7 @@ #include <girepository.h> #include "girepository-private.h" #include "gitypelib-internal.h" +#include "config.h" /** * SECTION:gifieldinfo @@ -96,3 +97,413 @@ g_field_info_get_type (GIFieldInfo *info) return (GIBaseInfo*)type_info; } +/** + * g_field_info_get_field: + * @field_info: a #GIFieldInfo + * @mem: pointer to a block of memory representing a C structure or union + * @value: a #GArgument into which to store the value retrieved + * + * Reads a field identified by a #GFieldInfo from a C structure or + * union. This only handles fields of simple C types. It will fail + * for a field of a composite type like a nested structure or union + * even if that is actually readable. + * + * Returns: %TRUE if reading the field succeeded, otherwise %FALSE + */ +gboolean +g_field_info_get_field (GIFieldInfo *field_info, + gpointer mem, + GArgument *value) +{ + int offset; + GITypeInfo *type_info; + gboolean result = FALSE; + + if ((g_field_info_get_flags (field_info) & GI_FIELD_IS_READABLE) == 0) + return FALSE; + + offset = g_field_info_get_offset (field_info); + type_info = g_field_info_get_type (field_info); + + if (g_type_info_is_pointer (type_info)) + { + value->v_pointer = G_STRUCT_MEMBER(gpointer, mem, offset); + result = TRUE; + } + else + { + switch (g_type_info_get_tag (type_info)) + { + case GI_TYPE_TAG_VOID: + g_warning("Field %s: should not be have void type", + g_base_info_get_name ((GIBaseInfo *)field_info)); + break; + case GI_TYPE_TAG_BOOLEAN: + value->v_boolean = G_STRUCT_MEMBER(gboolean, mem, offset) != FALSE; + result = TRUE; + break; + case GI_TYPE_TAG_INT8: + case GI_TYPE_TAG_UINT8: + value->v_uint8 = G_STRUCT_MEMBER(guint8, mem, offset); + result = TRUE; + break; + case GI_TYPE_TAG_INT16: + case GI_TYPE_TAG_UINT16: + case GI_TYPE_TAG_SHORT: + case GI_TYPE_TAG_USHORT: + value->v_uint16 = G_STRUCT_MEMBER(guint16, mem, offset); + result = TRUE; + break; + case GI_TYPE_TAG_INT32: + case GI_TYPE_TAG_UINT32: + case GI_TYPE_TAG_INT: + case GI_TYPE_TAG_UINT: + value->v_uint32 = G_STRUCT_MEMBER(guint32, mem, offset); + result = TRUE; + break; + case GI_TYPE_TAG_INT64: + case GI_TYPE_TAG_UINT64: + value->v_uint64 = G_STRUCT_MEMBER(guint64, mem, offset); + result = TRUE; + break; + case GI_TYPE_TAG_LONG: + case GI_TYPE_TAG_ULONG: + value->v_ulong = G_STRUCT_MEMBER(gulong, mem, offset); + result = TRUE; + break; + case GI_TYPE_TAG_SSIZE: + case GI_TYPE_TAG_SIZE: + case GI_TYPE_TAG_GTYPE: + value->v_size = G_STRUCT_MEMBER(gsize, mem, offset); + result = TRUE; + break; + case GI_TYPE_TAG_FLOAT: + value->v_float = G_STRUCT_MEMBER(gfloat, mem, offset); + result = TRUE; + break; + case GI_TYPE_TAG_DOUBLE: + value->v_double = G_STRUCT_MEMBER(gdouble, mem, offset); + result = TRUE; + break; + case GI_TYPE_TAG_TIME_T: +#if SIZEOF_TIME_T == 4 + value->v_int32 = G_STRUCT_MEMBER(time_t, mem, offset); +#elif SIZEOF_TIME_T == 8 + value->v_int64 = G_STRUCT_MEMBER(time_t, mem, offset); +#else +# error "Unexpected size for time_t: not 4 or 8" +#endif + result = TRUE; + break; + case GI_TYPE_TAG_UTF8: + case GI_TYPE_TAG_FILENAME: + case GI_TYPE_TAG_ARRAY: + case GI_TYPE_TAG_GLIST: + case GI_TYPE_TAG_GSLIST: + case GI_TYPE_TAG_GHASH: + g_warning("Field %s: type %s should have is_pointer set", + g_base_info_get_name ((GIBaseInfo *)field_info), + g_type_tag_to_string (g_type_info_get_tag (type_info))); + break; + case GI_TYPE_TAG_ERROR: + /* Needs to be handled by the language binding directly */ + break; + case GI_TYPE_TAG_INTERFACE: + { + GIBaseInfo *interface = g_type_info_get_interface (type_info); + switch (g_base_info_get_type (interface)) + { + case GI_INFO_TYPE_STRUCT: + case GI_INFO_TYPE_UNION: + case GI_INFO_TYPE_BOXED: + /* Needs to be handled by the language binding directly */ + break; + case GI_INFO_TYPE_OBJECT: + break; + case GI_INFO_TYPE_ENUM: + case GI_INFO_TYPE_FLAGS: + { + /* FIXME: there's a mismatch here between the value->v_int we use + * here and the glong result returned from g_value_info_get_value(). + * But to switch this to glong, we'd have to make g_function_info_invoke() + * translate value->v_long to the proper ABI for an enum function + * call parameter, which will usually be int, and then fix up language + * bindings. + */ + GITypeTag storage_type = g_enum_info_get_storage_type ((GIEnumInfo *)interface); + switch (storage_type) + { + case GI_TYPE_TAG_INT8: + case GI_TYPE_TAG_UINT8: + value->v_int = (gint)G_STRUCT_MEMBER(guint8, mem, offset); + result = TRUE; + break; + case GI_TYPE_TAG_INT16: + case GI_TYPE_TAG_UINT16: + case GI_TYPE_TAG_SHORT: + case GI_TYPE_TAG_USHORT: + value->v_int = (gint)G_STRUCT_MEMBER(guint16, mem, offset); + result = TRUE; + break; + case GI_TYPE_TAG_INT32: + case GI_TYPE_TAG_UINT32: + case GI_TYPE_TAG_INT: + case GI_TYPE_TAG_UINT: + value->v_int = (gint)G_STRUCT_MEMBER(guint32, mem, offset); + result = TRUE; + break; + case GI_TYPE_TAG_INT64: + case GI_TYPE_TAG_UINT64: + value->v_int = (gint)G_STRUCT_MEMBER(guint64, mem, offset); + result = TRUE; + break; + case GI_TYPE_TAG_LONG: + case GI_TYPE_TAG_ULONG: + value->v_int = (gint)G_STRUCT_MEMBER(gulong, mem, offset); + result = TRUE; + break; + default: + g_warning("Field %s: Unexpected enum storage type %s", + g_base_info_get_name ((GIBaseInfo *)field_info), + g_type_tag_to_string (storage_type)); + break; + } + break; + } + case GI_INFO_TYPE_VFUNC: + case GI_INFO_TYPE_CALLBACK: + g_warning("Field %s: Interface type %d should have is_pointer set", + g_base_info_get_name ((GIBaseInfo *)field_info), + g_base_info_get_type (interface)); + break; + case GI_INFO_TYPE_INVALID: + case GI_INFO_TYPE_INTERFACE: + case GI_INFO_TYPE_FUNCTION: + case GI_INFO_TYPE_CONSTANT: + case GI_INFO_TYPE_ERROR_DOMAIN: + case GI_INFO_TYPE_VALUE: + case GI_INFO_TYPE_SIGNAL: + case GI_INFO_TYPE_PROPERTY: + case GI_INFO_TYPE_FIELD: + case GI_INFO_TYPE_ARG: + case GI_INFO_TYPE_TYPE: + case GI_INFO_TYPE_UNRESOLVED: + g_warning("Field %s: Interface type %d not expected", + g_base_info_get_name ((GIBaseInfo *)field_info), + g_base_info_get_type (interface)); + break; + } + + g_base_info_unref ((GIBaseInfo *)interface); + break; + } + break; + } + } + + g_base_info_unref ((GIBaseInfo *)type_info); + + return result; +} + +/** + * g_field_info_set_field: + * @field_info: a #GIFieldInfo + * @mem: pointer to a block of memory representing a C structure or union + * @value: a #GArgument holding the value to store + * + * Writes a field identified by a #GFieldInfo to a C structure or + * union. This only handles fields of simple C types. It will fail + * for a field of a composite type like a nested structure or union + * even if that is actually writable. Note also that that it will refuse + * to write fields where memory management would by required. A field + * with a type such as 'char *' must be set with a setter function. + * + * Returns: %TRUE if writing the field succeeded, otherwise %FALSE + */ +gboolean +g_field_info_set_field (GIFieldInfo *field_info, + gpointer mem, + const GArgument *value) +{ + int offset; + GITypeInfo *type_info; + gboolean result = FALSE; + + if ((g_field_info_get_flags (field_info) & GI_FIELD_IS_WRITABLE) == 0) + return FALSE; + + offset = g_field_info_get_offset (field_info); + type_info = g_field_info_get_type (field_info); + + if (!g_type_info_is_pointer (type_info)) + { + switch (g_type_info_get_tag (type_info)) + { + case GI_TYPE_TAG_VOID: + g_warning("Field %s: should not be have void type", + g_base_info_get_name ((GIBaseInfo *)field_info)); + break; + case GI_TYPE_TAG_BOOLEAN: + G_STRUCT_MEMBER(gboolean, mem, offset) = value->v_boolean != FALSE; + result = TRUE; + break; + case GI_TYPE_TAG_INT8: + case GI_TYPE_TAG_UINT8: + G_STRUCT_MEMBER(guint8, mem, offset) = value->v_uint8; + result = TRUE; + break; + case GI_TYPE_TAG_INT16: + case GI_TYPE_TAG_UINT16: + case GI_TYPE_TAG_SHORT: + case GI_TYPE_TAG_USHORT: + G_STRUCT_MEMBER(guint16, mem, offset) = value->v_uint16; + result = TRUE; + break; + case GI_TYPE_TAG_INT32: + case GI_TYPE_TAG_UINT32: + case GI_TYPE_TAG_INT: + case GI_TYPE_TAG_UINT: + G_STRUCT_MEMBER(guint32, mem, offset) = value->v_uint32; + result = TRUE; + break; + case GI_TYPE_TAG_INT64: + case GI_TYPE_TAG_UINT64: + G_STRUCT_MEMBER(guint64, mem, offset) = value->v_uint64; + result = TRUE; + break; + case GI_TYPE_TAG_LONG: + case GI_TYPE_TAG_ULONG: + G_STRUCT_MEMBER(gulong, mem, offset)= value->v_ulong; + result = TRUE; + break; + case GI_TYPE_TAG_SSIZE: + case GI_TYPE_TAG_SIZE: + case GI_TYPE_TAG_GTYPE: + G_STRUCT_MEMBER(gsize, mem, offset) = value->v_size; + result = TRUE; + break; + case GI_TYPE_TAG_FLOAT: + G_STRUCT_MEMBER(gfloat, mem, offset) = value->v_float; + result = TRUE; + break; + case GI_TYPE_TAG_DOUBLE: + G_STRUCT_MEMBER(gdouble, mem, offset)= value->v_double; + result = TRUE; + break; + case GI_TYPE_TAG_TIME_T: +#if SIZEOF_TIME_T == 4 + G_STRUCT_MEMBER(time_t, mem, offset) = value->v_int32; +#elif SIZEOF_TIME_T == 8 + G_STRUCT_MEMBER(time_t, mem, offset) = value->v_int64; +#else +# error "Unexpected size for time_t: not 4 or 8" +#endif + result = TRUE; + break; + case GI_TYPE_TAG_UTF8: + case GI_TYPE_TAG_FILENAME: + case GI_TYPE_TAG_ARRAY: + case GI_TYPE_TAG_GLIST: + case GI_TYPE_TAG_GSLIST: + case GI_TYPE_TAG_GHASH: + g_warning("Field %s: type %s should have is_pointer set", + g_base_info_get_name ((GIBaseInfo *)field_info), + g_type_tag_to_string (g_type_info_get_tag (type_info))); + break; + case GI_TYPE_TAG_ERROR: + /* Needs to be handled by the language binding directly */ + break; + case GI_TYPE_TAG_INTERFACE: + { + GIBaseInfo *interface = g_type_info_get_interface (type_info); + switch (g_base_info_get_type (interface)) + { + case GI_INFO_TYPE_STRUCT: + case GI_INFO_TYPE_UNION: + case GI_INFO_TYPE_BOXED: + /* Needs to be handled by the language binding directly */ + break; + case GI_INFO_TYPE_OBJECT: + break; + case GI_INFO_TYPE_ENUM: + case GI_INFO_TYPE_FLAGS: + { + /* See FIXME above + */ + GITypeTag storage_type = g_enum_info_get_storage_type ((GIEnumInfo *)interface); + switch (storage_type) + { + case GI_TYPE_TAG_INT8: + case GI_TYPE_TAG_UINT8: + G_STRUCT_MEMBER(guint8, mem, offset) = (guint8)value->v_int; + result = TRUE; + break; + case GI_TYPE_TAG_INT16: + case GI_TYPE_TAG_UINT16: + case GI_TYPE_TAG_SHORT: + case GI_TYPE_TAG_USHORT: + G_STRUCT_MEMBER(guint16, mem, offset) = (guint16)value->v_int; + result = TRUE; + break; + case GI_TYPE_TAG_INT32: + case GI_TYPE_TAG_UINT32: + case GI_TYPE_TAG_INT: + case GI_TYPE_TAG_UINT: + G_STRUCT_MEMBER(guint32, mem, offset) = (guint32)value->v_int; + result = TRUE; + break; + case GI_TYPE_TAG_INT64: + case GI_TYPE_TAG_UINT64: + G_STRUCT_MEMBER(guint64, mem, offset) = (guint64)value->v_int; + result = TRUE; + break; + case GI_TYPE_TAG_LONG: + case GI_TYPE_TAG_ULONG: + G_STRUCT_MEMBER(gulong, mem, offset) = (gulong)value->v_int; + result = TRUE; + break; + default: + g_warning("Field %s: Unexpected enum storage type %s", + g_base_info_get_name ((GIBaseInfo *)field_info), + g_type_tag_to_string (storage_type)); + break; + } + break; + } + break; + case GI_INFO_TYPE_VFUNC: + case GI_INFO_TYPE_CALLBACK: + g_warning("Field%s: Interface type %d should have is_pointer set", + g_base_info_get_name ((GIBaseInfo *)field_info), + g_base_info_get_type (interface)); + break; + case GI_INFO_TYPE_INVALID: + case GI_INFO_TYPE_INTERFACE: + case GI_INFO_TYPE_FUNCTION: + case GI_INFO_TYPE_CONSTANT: + case GI_INFO_TYPE_ERROR_DOMAIN: + case GI_INFO_TYPE_VALUE: + case GI_INFO_TYPE_SIGNAL: + case GI_INFO_TYPE_PROPERTY: + case GI_INFO_TYPE_FIELD: + case GI_INFO_TYPE_ARG: + case GI_INFO_TYPE_TYPE: + case GI_INFO_TYPE_UNRESOLVED: + g_warning("Field %s: Interface type %d not expected", + g_base_info_get_name ((GIBaseInfo *)field_info), + g_base_info_get_type (interface)); + break; + } + + g_base_info_unref ((GIBaseInfo *)interface); + break; + } + break; + } + } + + g_base_info_unref ((GIBaseInfo *)type_info); + + return result; +} |