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gtk2/gtk/gtkbuilderparser.c
Florian Müllner 2715b3ec31 buildable: Make vfunc accessor functions private 
With the exception of gtk_buildable_get_id(), those are only used
to construct objects from XML descriptions, which is functionality
internal to GTK.

The API is therefore unlikely to be missed, and keeping it internal
means they can no longer unintentionally shadow object methods in
bindings with less namespacing; for example it's currently ambiguous
whether `infoBar.add_child()` refers to gtk_info_bar_add_child() or
gtk_buildable_add_child().

https://gitlab.gnome.org/GNOME/gtk/-/issues/3191
2020-09-26 02:16:57 +02:00

2256 lines
71 KiB
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/* gtkbuilderparser.c
* Copyright (C) 2006-2007 Async Open Source,
* Johan Dahlin <jdahlin@async.com.br>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtkbuilderprivate.h"
#include "gtkbuildableprivate.h"
#include "gtkbuilderscopeprivate.h"
#include "gtkdebug.h"
#include "gtkintl.h"
#include "gtktypebuiltins.h"
#include "gtkversion.h"
#include "gdkprofilerprivate.h"
#include <gio/gio.h>
#include <string.h>
typedef struct {
const GtkBuildableParser *last_parser;
gpointer last_user_data;
int last_depth;
} GtkBuildableParserStack;
static void
pop_subparser_stack (GtkBuildableParseContext *context)
{
GtkBuildableParserStack *stack =
&g_array_index (context->subparser_stack, GtkBuildableParserStack,
context->subparser_stack->len - 1);
context->awaiting_pop = TRUE;
context->held_user_data = context->user_data;
context->user_data = stack->last_user_data;
context->parser = stack->last_parser;
g_array_set_size (context->subparser_stack, context->subparser_stack->len - 1);
}
static void
possibly_finish_subparser (GtkBuildableParseContext *context)
{
if (context->subparser_stack->len > 0)
{
GtkBuildableParserStack *stack =
&g_array_index (context->subparser_stack, GtkBuildableParserStack,
context->subparser_stack->len - 1);
if (stack->last_depth == context->tag_stack->len)
pop_subparser_stack (context);
}
}
static void
proxy_start_element (GMarkupParseContext *gm_context,
const char *element_name,
const char **attribute_names,
const char **attribute_values,
gpointer user_data,
GError **error)
{
GtkBuildableParseContext *context = user_data;
// Due to the way GMarkup works we're sure this will live until the end_element callback
g_ptr_array_add (context->tag_stack, (char *)element_name);
if (context->parser->start_element)
context->parser->start_element (context, element_name,
attribute_names, attribute_values,
context->user_data, error);
}
static void
proxy_end_element (GMarkupParseContext *gm_context,
const char *element_name,
gpointer user_data,
GError **error)
{
GtkBuildableParseContext *context = user_data;
possibly_finish_subparser (context);
if (context->parser->end_element)
context->parser->end_element (context, element_name, context->user_data, error);
g_ptr_array_set_size (context->tag_stack, context->tag_stack->len - 1);
}
static void
proxy_text (GMarkupParseContext *gm_context,
const char *text,
gsize text_len,
gpointer user_data,
GError **error)
{
GtkBuildableParseContext *context = user_data;
if (context->parser->text)
context->parser->text (context, text, text_len, context->user_data, error);
}
static void
proxy_error (GMarkupParseContext *gm_context,
GError *error,
gpointer user_data)
{
GtkBuildableParseContext *context = user_data;
if (context->parser->error)
context->parser->error (context, error, context->user_data);
/* report the error all the way up to free all the user-data */
while (context->subparser_stack->len > 0)
{
pop_subparser_stack (context);
context->awaiting_pop = FALSE; /* already been freed */
if (context->parser->error)
context->parser->error (context, error, context->user_data);
}
}
static const GMarkupParser gmarkup_parser = {
proxy_start_element,
proxy_end_element,
proxy_text,
NULL,
proxy_error,
};
static void
gtk_buildable_parse_context_init (GtkBuildableParseContext *context,
const GtkBuildableParser *parser,
gpointer user_data)
{
context->internal_callbacks = &gmarkup_parser;
context->ctx = NULL;
context->parser = parser;
context->user_data = user_data;
context->subparser_stack = g_array_new (FALSE, FALSE, sizeof (GtkBuildableParserStack));
context->tag_stack = g_ptr_array_new ();
context->held_user_data = NULL;
context->awaiting_pop = FALSE;
}
static void
gtk_buildable_parse_context_free (GtkBuildableParseContext *context)
{
g_array_unref (context->subparser_stack);
g_ptr_array_unref (context->tag_stack);
}
static gboolean
gtk_buildable_parse_context_parse (GtkBuildableParseContext *context,
const char *text,
gssize text_len,
GError **error)
{
gboolean res;
if (_gtk_buildable_parser_is_precompiled (text, text_len))
{
res = _gtk_buildable_parser_replay_precompiled (context, text, text_len, error);
}
else
{
context->ctx = g_markup_parse_context_new (context->internal_callbacks,
G_MARKUP_TREAT_CDATA_AS_TEXT,
context, NULL);
res = g_markup_parse_context_parse (context->ctx, text, text_len, error);
g_markup_parse_context_free (context->ctx);
}
return res;
}
/**
* gtk_buildable_parse_context_push:
* @context: a #GtkBuildableParseContext
* @parser: a #GtkBuildableParser
* @user_data: user data to pass to #GtkBuildableParser functions
*
* Temporarily redirects markup data to a sub-parser.
*
* This function may only be called from the start_element handler of
* a #GtkBuildableParser. It must be matched with a corresponding call to
* gtk_buildable_parse_context_pop() in the matching end_element handler
* (except in the case that the parser aborts due to an error).
*
* All tags, text and other data between the matching tags is
* redirected to the subparser given by @parser. @user_data is used
* as the user_data for that parser. @user_data is also passed to the
* error callback in the event that an error occurs. This includes
* errors that occur in subparsers of the subparser.
*
* The end tag matching the start tag for which this call was made is
* handled by the previous parser (which is given its own user_data)
* which is why gtk_buildable_parse_context_pop() is provided to allow "one
* last access" to the @user_data provided to this function. In the
* case of error, the @user_data provided here is passed directly to
* the error callback of the subparser and gtk_buildable_parse_context_pop()
* should not be called. In either case, if @user_data was allocated
* then it ought to be freed from both of these locations.
*
* This function is not intended to be directly called by users
* interested in invoking subparsers. Instead, it is intended to be
* used by the subparsers themselves to implement a higher-level
* interface.
*
* For an example of how to use this, see g_markup_parse_context_push() which
* has the same kind of API.
**/
void
gtk_buildable_parse_context_push (GtkBuildableParseContext *context,
const GtkBuildableParser *parser,
gpointer user_data)
{
GtkBuildableParserStack stack = { 0 };
stack.last_parser = context->parser;
stack.last_user_data = context->user_data;
stack.last_depth = context->tag_stack->len; // If at end_element time we're this deep, then pop it
context->parser = parser;
context->user_data = user_data;
g_array_append_val (context->subparser_stack, stack);
}
/**
* gtk_buildable_parse_context_pop:
* @context: a #GtkBuildableParseContext
*
* Completes the process of a temporary sub-parser redirection.
*
* This function exists to collect the user_data allocated by a
* matching call to gtk_buildable_parse_context_push(). It must be called
* in the end_element handler corresponding to the start_element
* handler during which gtk_buildable_parse_context_push() was called.
* You must not call this function from the error callback -- the
* @user_data is provided directly to the callback in that case.
*
* This function is not intended to be directly called by users
* interested in invoking subparsers. Instead, it is intended to
* be used by the subparsers themselves to implement a higher-level
* interface.
*
* Returns: the user data passed to gtk_buildable_parse_context_push()
*/
gpointer
gtk_buildable_parse_context_pop (GtkBuildableParseContext *context)
{
gpointer user_data;
if (!context->awaiting_pop)
possibly_finish_subparser (context);
g_assert (context->awaiting_pop);
context->awaiting_pop = FALSE;
user_data = context->held_user_data;
context->held_user_data = NULL;
return user_data;
}
/**
* gtk_buildable_parse_context_get_element:
* @context: a #GtkBuildablParseContext
*
* Retrieves the name of the currently open element.
*
* If called from the start_element or end_element handlers this will
* give the element_name as passed to those functions. For the parent
* elements, see gtk_buildable_parse_context_get_element_stack().
*
* Returns: the name of the currently open element, or %NULL
*/
const char *
gtk_buildable_parse_context_get_element (GtkBuildableParseContext *context)
{
if (context->tag_stack->len > 0)
return g_ptr_array_index (context->tag_stack, context->tag_stack->len - 1);
return NULL;
}
/**
* gtk_buildable_parse_context_get_element_stack:
* @context: a #GtkBuildableParseContext
*
* Retrieves the element stack from the internal state of the parser.
*
* The returned #GPtrArray is an array of strings where the last item is
* the currently open tag (as would be returned by
* gtk_buildable_parse_context_get_element()) and the previous item is its
* immediate parent.
*
* This function is intended to be used in the start_element and
* end_element handlers where gtk_buildable_parse_context_get_element()
* would merely return the name of the element that is being
* processed.
*
* Returns: (transfer none) (element-type utf8): the element stack, which must not be modified
*/
GPtrArray *
gtk_buildable_parse_context_get_element_stack (GtkBuildableParseContext *context)
{
return context->tag_stack;
}
/**
* gtk_buildable_parse_context_get_position:
* @context: a #GtkBuildableParseContext
* @line_number: (out) (optional): return location for a line number, or %NULL
* @char_number: (out) (optional): return location for a char-on-line number, or %NULL
*
* Retrieves the current line number and the number of the character on
* that line. Intended for use in error messages; there are no strict
* semantics for what constitutes the "current" line number other than
* "the best number we could come up with for error messages."
*/
void
gtk_buildable_parse_context_get_position (GtkBuildableParseContext *context,
int *line_number,
int *char_number)
{
if (context->ctx)
g_markup_parse_context_get_position (context->ctx, line_number, char_number);
else
{
if (line_number)
*line_number = 0;
if (char_number)
*char_number = 0;
}
}
static void free_property_info (PropertyInfo *info);
static void free_object_info (ObjectInfo *info);
static inline void
state_push (ParserData *data, gpointer info)
{
data->stack = g_slist_prepend (data->stack, info);
}
static inline gpointer
state_peek (ParserData *data)
{
if (!data->stack)
return NULL;
return data->stack->data;
}
static inline gpointer
state_pop (ParserData *data)
{
gpointer old = NULL;
g_assert (data->stack);
old = data->stack->data;
data->stack = g_slist_delete_link (data->stack, data->stack);
return old;
}
#define state_peek_info(data, st) ((st*)state_peek(data))
#define state_pop_info(data, st) ((st*)state_pop(data))
static void
error_missing_attribute (ParserData *data,
const char *tag,
const char *attribute,
GError **error)
{
int line, col;
gtk_buildable_parse_context_get_position (&data->ctx, &line, &col);
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_MISSING_ATTRIBUTE,
"%s:%d:%d <%s> requires attribute '%s'",
data->filename, line, col, tag, attribute);
}
static void
error_invalid_tag (ParserData *data,
const char *tag,
const char *expected,
GError **error)
{
int line, col;
gtk_buildable_parse_context_get_position (&data->ctx, &line, &col);
if (expected)
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_TAG,
"%s:%d:%d <%s> is not a valid tag here, expected a <%s> tag",
data->filename, line, col, tag, expected);
else
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_TAG,
"%s:%d:%d <%s> is not a valid tag here",
data->filename, line, col, tag);
}
static void
error_unhandled_tag (ParserData *data,
const char *tag,
GError **error)
{
int line, col;
gtk_buildable_parse_context_get_position (&data->ctx, &line, &col);
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_UNHANDLED_TAG,
"%s:%d:%d Unhandled tag: <%s>",
data->filename, line, col, tag);
}
static GObject *
builder_construct (ParserData *data,
ObjectInfo *object_info,
GError **error)
{
GObject *object;
g_assert (object_info != NULL);
if (object_info->object && object_info->applied_properties)
return object_info->object;
object_info->properties = g_slist_reverse (object_info->properties);
if (object_info->object == NULL)
{
object = _gtk_builder_construct (data->builder, object_info, error);
if (!object)
return NULL;
}
else
{
/* We're building a template, the object is already set and
* we just want to resolve the properties at the right time
*/
object = object_info->object;
_gtk_builder_apply_properties (data->builder, object_info, error);
}
object_info->applied_properties = TRUE;
g_assert (G_IS_OBJECT (object));
object_info->object = object;
return object;
}
static void
parse_requires (ParserData *data,
const char *element_name,
const char **names,
const char **values,
GError **error)
{
RequiresInfo *req_info;
const char *library = NULL;
const char *version = NULL;
char **split;
int version_major = 0;
int version_minor = 0;
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_STRING, "lib", &library,
G_MARKUP_COLLECT_STRING, "version", &version,
G_MARKUP_COLLECT_INVALID))
{
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
if (!(split = g_strsplit (version, ".", 2)) || !split[0] || !split[1])
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"'version' attribute has malformed value '%s'", version);
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
version_major = g_ascii_strtoll (split[0], NULL, 10);
version_minor = g_ascii_strtoll (split[1], NULL, 10);
g_strfreev (split);
req_info = g_slice_new0 (RequiresInfo);
req_info->library = g_strdup (library);
req_info->major = version_major;
req_info->minor = version_minor;
state_push (data, req_info);
req_info->tag_type = TAG_REQUIRES;
}
static gboolean
is_requested_object (const char *object,
ParserData *data)
{
int i;
for (i = 0; data->requested_objects[i]; ++i)
{
if (g_strcmp0 (data->requested_objects[i], object) == 0)
return TRUE;
}
return FALSE;
}
static void
parse_object (GtkBuildableParseContext *context,
ParserData *data,
const char *element_name,
const char **names,
const char **values,
GError **error)
{
ObjectInfo *object_info;
ChildInfo* child_info;
GType object_type = G_TYPE_INVALID;
const char *object_class = NULL;
const char *constructor = NULL;
const char *type_func = NULL;
const char *object_id = NULL;
char *internal_id = NULL;
int line;
child_info = state_peek_info (data, ChildInfo);
if (child_info && child_info->tag_type == TAG_OBJECT)
{
error_invalid_tag (data, element_name, NULL, error);
return;
}
/* Even though 'class' is a mandatory attribute, we don't flag its
* absence here because it's supposed to throw
* GTK_BUILDER_ERROR_MISSING_ATTRIBUTE, not
* G_MARKUP_ERROR_MISSING_ATTRIBUTE. It's handled immediately
* afterwards.
*/
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "class", &object_class,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "constructor", &constructor,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "type-func", &type_func,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "id", &object_id,
G_MARKUP_COLLECT_INVALID))
{
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
if (!object_class)
{
error_missing_attribute (data, element_name, "class", error);
return;
}
if (type_func)
{
/* Call the GType function, and return the GType, it's guaranteed afterwards
* that g_type_from_name on the name will return our GType
*/
object_type = gtk_builder_scope_get_type_from_function (gtk_builder_get_scope (data->builder), data->builder, type_func);
if (object_type == G_TYPE_INVALID)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_TYPE_FUNCTION,
"Invalid type function '%s'", type_func);
_gtk_builder_prefix_error (data->builder, context, error);
return;
}
}
else
{
g_assert_nonnull (object_class);
object_type = gtk_builder_get_type_from_name (data->builder, object_class);
if (object_type == G_TYPE_INVALID)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"Invalid object type '%s'", object_class);
_gtk_builder_prefix_error (data->builder, context, error);
return;
}
}
if (!object_id)
{
internal_id = g_strdup_printf ("___object_%d___", ++data->object_counter);
object_id = internal_id;
}
++data->cur_object_level;
/* check if we reached a requested object (if it is specified) */
if (data->requested_objects && !data->inside_requested_object)
{
if (is_requested_object (object_id, data))
{
data->requested_object_level = data->cur_object_level;
GTK_NOTE (BUILDER,
g_message ("requested object \"%s\" found at level %d",
object_id, data->requested_object_level));
data->inside_requested_object = TRUE;
}
else
{
g_free (internal_id);
return;
}
}
object_info = g_slice_new0 (ObjectInfo);
object_info->tag_type = TAG_OBJECT;
object_info->type = object_type;
object_info->oclass = g_type_class_ref (object_type);
object_info->id = (internal_id) ? internal_id : g_strdup (object_id);
object_info->constructor = g_strdup (constructor);
object_info->parent = (CommonInfo*)child_info;
state_push (data, object_info);
line = GPOINTER_TO_INT (g_hash_table_lookup (data->object_ids, object_id));
if (line != 0)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_DUPLICATE_ID,
"Duplicate object ID '%s' (previously on line %d)",
object_id, line);
_gtk_builder_prefix_error (data->builder, context, error);
return;
}
gtk_buildable_parse_context_get_position (context, &line, NULL);
g_hash_table_insert (data->object_ids, g_strdup (object_id), GINT_TO_POINTER (line));
}
static void
parse_template (GtkBuildableParseContext *context,
ParserData *data,
const char *element_name,
const char **names,
const char **values,
GError **error)
{
ObjectInfo *object_info;
const char *object_class = NULL;
const char *parent_class = NULL;
int line;
GType template_type;
GType parsed_type;
template_type = _gtk_builder_get_template_type (data->builder);
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_STRING, "class", &object_class,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "parent", &parent_class,
G_MARKUP_COLLECT_INVALID))
{
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
if (template_type == 0)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_UNHANDLED_TAG,
"Template declaration (class '%s', parent '%s') where templates aren't supported",
object_class, parent_class ? parent_class : "GtkWidget");
_gtk_builder_prefix_error (data->builder, context, error);
return;
}
else if (state_peek (data) != NULL)
{
error_invalid_tag (data, "template", NULL, error);
return;
}
parsed_type = g_type_from_name (object_class);
if (template_type != parsed_type)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_TEMPLATE_MISMATCH,
"Parsed template definition for type '%s', expected type '%s'",
object_class, g_type_name (template_type));
_gtk_builder_prefix_error (data->builder, context, error);
return;
}
if (parent_class)
{
GType parent_type = g_type_from_name (parent_class);
GType expected_type = g_type_parent (parsed_type);
if (parent_type == G_TYPE_INVALID)
{
g_set_error (error, GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"Invalid template parent type '%s'", parent_class);
_gtk_builder_prefix_error (data->builder, context, error);
return;
}
if (parent_type != expected_type)
{
g_set_error (error, GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_TEMPLATE_MISMATCH,
"Template parent type '%s' does not match instance parent type '%s'.",
parent_class, g_type_name (expected_type));
_gtk_builder_prefix_error (data->builder, context, error);
return;
}
}
++data->cur_object_level;
object_info = g_slice_new0 (ObjectInfo);
object_info->tag_type = TAG_TEMPLATE;
object_info->type = parsed_type;
object_info->oclass = g_type_class_ref (parsed_type);
object_info->id = g_strdup (object_class);
object_info->object = gtk_builder_get_object (data->builder, object_class);
state_push (data, object_info);
line = GPOINTER_TO_INT (g_hash_table_lookup (data->object_ids, object_class));
if (line != 0)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_DUPLICATE_ID,
"Duplicate object ID '%s' (previously on line %d)",
object_class, line);
_gtk_builder_prefix_error (data->builder, context, error);
return;
}
gtk_buildable_parse_context_get_position (context, &line, NULL);
g_hash_table_insert (data->object_ids, g_strdup (object_class), GINT_TO_POINTER (line));
}
static void
free_object_info (ObjectInfo *info)
{
/* Do not free the signal items, which GtkBuilder takes ownership of */
g_type_class_unref (info->oclass);
g_slist_free (info->signals);
g_slist_free_full (info->properties, (GDestroyNotify)free_property_info);
g_free (info->constructor);
g_free (info->id);
g_slice_free (ObjectInfo, info);
}
static void
parse_child (ParserData *data,
const char *element_name,
const char **names,
const char **values,
GError **error)
{
ObjectInfo* object_info;
ChildInfo *child_info;
const char *type = NULL;
const char *internal_child = NULL;
object_info = state_peek_info (data, ObjectInfo);
if (!object_info ||
!(object_info->tag_type == TAG_OBJECT ||
object_info->tag_type == TAG_TEMPLATE))
{
error_invalid_tag (data, element_name, NULL, error);
return;
}
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "type", &type,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "internal-child", &internal_child,
G_MARKUP_COLLECT_INVALID))
{
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
child_info = g_slice_new0 (ChildInfo);
child_info->tag_type = TAG_CHILD;
child_info->type = g_strdup (type);
child_info->internal_child = g_strdup (internal_child);
child_info->parent = (CommonInfo*)object_info;
state_push (data, child_info);
object_info->object = builder_construct (data, object_info, error);
}
static void
free_child_info (ChildInfo *info)
{
g_free (info->type);
g_free (info->internal_child);
g_slice_free (ChildInfo, info);
}
static void
parse_property (ParserData *data,
const char *element_name,
const char **names,
const char **values,
GError **error)
{
PropertyInfo *info;
const char *name = NULL;
const char *context = NULL;
const char *bind_source = NULL;
const char *bind_property = NULL;
const char *bind_flags_str = NULL;
GBindingFlags bind_flags = G_BINDING_DEFAULT;
gboolean translatable = FALSE;
ObjectInfo *object_info;
GParamSpec *pspec = NULL;
int line, col;
object_info = state_peek_info (data, ObjectInfo);
if (!object_info ||
!(object_info->tag_type == TAG_OBJECT ||
object_info->tag_type == TAG_TEMPLATE))
{
error_invalid_tag (data, element_name, NULL, error);
return;
}
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_STRING, "name", &name,
G_MARKUP_COLLECT_BOOLEAN|G_MARKUP_COLLECT_OPTIONAL, "translatable", &translatable,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "comments", NULL,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "context", &context,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "bind-source", &bind_source,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "bind-property", &bind_property,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "bind-flags", &bind_flags_str,
G_MARKUP_COLLECT_INVALID))
{
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
pspec = g_object_class_find_property (object_info->oclass, name);
if (!pspec)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_PROPERTY,
"Invalid property: %s.%s",
g_type_name (object_info->type), name);
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
if (bind_flags_str)
{
if (!_gtk_builder_flags_from_string (G_TYPE_BINDING_FLAGS, NULL, bind_flags_str, &bind_flags, error))
{
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
}
gtk_buildable_parse_context_get_position (&data->ctx, &line, &col);
if (bind_source)
{
BindingInfo *binfo;
binfo = g_slice_new0 (BindingInfo);
binfo->tag_type = TAG_BINDING;
binfo->target = NULL;
binfo->target_pspec = pspec;
binfo->source = g_strdup (bind_source);
binfo->source_property = bind_property ? g_strdup (bind_property) : g_strdup (name);
binfo->flags = bind_flags;
binfo->line = line;
binfo->col = col;
object_info->bindings = g_slist_prepend (object_info->bindings, binfo);
}
else if (bind_property)
{
error_missing_attribute (data, element_name,
"bind-source",
error);
return;
}
info = g_slice_new0 (PropertyInfo);
info->tag_type = TAG_PROPERTY;
info->pspec = pspec;
info->text = g_string_new ("");
info->translatable = translatable;
info->bound = bind_source != NULL;
info->context = g_strdup (context);
info->line = line;
info->col = col;
state_push (data, info);
}
static void
parse_binding (ParserData *data,
const char *element_name,
const char **names,
const char **values,
GError **error)
{
BindingExpressionInfo *info;
const char *name = NULL;
const char *object_name = NULL;
ObjectInfo *object_info;
GParamSpec *pspec = NULL;
object_info = state_peek_info (data, ObjectInfo);
if (!object_info ||
!(object_info->tag_type == TAG_OBJECT ||
object_info->tag_type == TAG_TEMPLATE))
{
error_invalid_tag (data, element_name, NULL, error);
return;
}
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_STRING, "name", &name,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "object", &object_name,
G_MARKUP_COLLECT_INVALID))
{
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
pspec = g_object_class_find_property (object_info->oclass, name);
if (!pspec)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_PROPERTY,
"Invalid property: %s.%s",
g_type_name (object_info->type), name);
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
else if (pspec->flags & G_PARAM_CONSTRUCT_ONLY)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_PROPERTY,
"%s.%s is a construct-only property",
g_type_name (object_info->type), name);
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
else if (!(pspec->flags & G_PARAM_WRITABLE))
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_PROPERTY,
"%s.%s is a non-writable property",
g_type_name (object_info->type), name);
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
info = g_slice_new0 (BindingExpressionInfo);
info->tag_type = TAG_BINDING_EXPRESSION;
info->target = NULL;
info->target_pspec = pspec;
info->object_name = g_strdup (object_name);
gtk_buildable_parse_context_get_position (&data->ctx, &info->line, &info->col);
state_push (data, info);
}
static void
free_property_info (PropertyInfo *info)
{
if (info->value)
{
if (G_PARAM_SPEC_VALUE_TYPE (info->pspec) == GTK_TYPE_EXPRESSION)
gtk_expression_unref (info->value);
else
g_assert_not_reached();
}
g_string_free (info->text, TRUE);
g_free (info->context);
g_slice_free (PropertyInfo, info);
}
static void
free_expression_info (ExpressionInfo *info)
{
switch (info->expression_type)
{
case EXPRESSION_EXPRESSION:
g_clear_pointer (&info->expression, gtk_expression_unref);
break;
case EXPRESSION_CONSTANT:
g_string_free (info->constant.text, TRUE);
break;
case EXPRESSION_CLOSURE:
g_free (info->closure.function_name);
g_free (info->closure.object_name);
g_slist_free_full (info->closure.params, (GDestroyNotify) free_expression_info);
break;
case EXPRESSION_PROPERTY:
g_clear_pointer (&info->property.expression, free_expression_info);
g_free (info->property.property_name);
break;
default:
g_assert_not_reached ();
break;
}
g_slice_free (ExpressionInfo, info);
}
static gboolean
check_expression_parent (ParserData *data)
{
CommonInfo *common_info = state_peek_info (data, CommonInfo);
if (common_info == NULL)
return FALSE;
if (common_info->tag_type == TAG_PROPERTY)
{
PropertyInfo *prop_info = (PropertyInfo *) common_info;
return G_PARAM_SPEC_VALUE_TYPE (prop_info->pspec) == GTK_TYPE_EXPRESSION;
}
else if (common_info->tag_type == TAG_BINDING_EXPRESSION)
{
BindingExpressionInfo *expr_info = (BindingExpressionInfo *) common_info;
return expr_info->expr == NULL;
}
else if (common_info->tag_type == TAG_EXPRESSION)
{
ExpressionInfo *expr_info = (ExpressionInfo *) common_info;
switch (expr_info->expression_type)
{
case EXPRESSION_CLOSURE:
return TRUE;
case EXPRESSION_CONSTANT:
return FALSE;
case EXPRESSION_PROPERTY:
return expr_info->property.expression == NULL;
case EXPRESSION_EXPRESSION:
default:
g_assert_not_reached ();
return FALSE;
}
}
return FALSE;
}
static void
parse_constant_expression (ParserData *data,
const char *element_name,
const char **names,
const char **values,
GError **error)
{
ExpressionInfo *info;
const char *type_name = NULL;
GType type;
if (!check_expression_parent (data))
{
error_invalid_tag (data, element_name, NULL, error);
return;
}
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "type", &type_name,
G_MARKUP_COLLECT_INVALID))
{
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
if (type_name == NULL)
type = G_TYPE_INVALID;
else
{
type = gtk_builder_get_type_from_name (data->builder, type_name);
if (type == G_TYPE_INVALID)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"Invalid type '%s'", type_name);
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
}
info = g_slice_new0 (ExpressionInfo);
info->tag_type = TAG_EXPRESSION;
info->expression_type = EXPRESSION_CONSTANT;
info->constant.type = type;
info->constant.text = g_string_new (NULL);
state_push (data, info);
}
static void
parse_closure_expression (ParserData *data,
const char *element_name,
const char **names,
const char **values,
GError **error)
{
ExpressionInfo *info;
const char *type_name;
const char *function_name;
const char *object_name = NULL;
gboolean swapped = -1;
GType type;
if (!check_expression_parent (data))
{
error_invalid_tag (data, element_name, NULL, error);
return;
}
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_STRING, "type", &type_name,
G_MARKUP_COLLECT_STRING, "function", &function_name,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "object", &object_name,
G_MARKUP_COLLECT_TRISTATE|G_MARKUP_COLLECT_OPTIONAL, "swapped", &swapped,
G_MARKUP_COLLECT_INVALID))
{
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
type = gtk_builder_get_type_from_name (data->builder, type_name);
if (type == G_TYPE_INVALID)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"Invalid type '%s'", type_name);
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
/* Swapped defaults to FALSE except when object is set */
if (swapped == -1)
{
if (object_name)
swapped = TRUE;
else
swapped = FALSE;
}
info = g_slice_new0 (ExpressionInfo);
info->tag_type = TAG_EXPRESSION;
info->expression_type = EXPRESSION_CLOSURE;
info->closure.type = type;
info->closure.swapped = swapped;
info->closure.function_name = g_strdup (function_name);
info->closure.object_name = g_strdup (object_name);
state_push (data, info);
}
static void
parse_lookup_expression (ParserData *data,
const char *element_name,
const char **names,
const char **values,
GError **error)
{
ExpressionInfo *info;
const char *property_name;
const char *type_name = NULL;
GType type;
if (!check_expression_parent (data))
{
error_invalid_tag (data, element_name, NULL, error);
return;
}
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "type", &type_name,
G_MARKUP_COLLECT_STRING, "name", &property_name,
G_MARKUP_COLLECT_INVALID))
{
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
if (type_name == NULL)
{
type = G_TYPE_INVALID;
}
else
{
type = gtk_builder_get_type_from_name (data->builder, type_name);
if (type == G_TYPE_INVALID)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"Invalid type '%s'", type_name);
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
}
info = g_slice_new0 (ExpressionInfo);
info->tag_type = TAG_EXPRESSION;
info->expression_type = EXPRESSION_PROPERTY;
info->property.this_type = type;
info->property.property_name = g_strdup (property_name);
state_push (data, info);
}
GtkExpression *
expression_info_construct (GtkBuilder *builder,
ExpressionInfo *info,
GError **error)
{
switch (info->expression_type)
{
case EXPRESSION_EXPRESSION:
break;
case EXPRESSION_CONSTANT:
{
GtkExpression *expr;
if (info->constant.type == G_TYPE_INVALID)
{
GObject *o = gtk_builder_lookup_object (builder, info->constant.text->str, 0, 0, error);
if (o == NULL)
return NULL;
expr = gtk_object_expression_new (o);
}
else
{
GValue value = G_VALUE_INIT;
if (!gtk_builder_value_from_string_type (builder,
info->constant.type,
info->constant.text->str,
&value,
error))
return NULL;
if (G_VALUE_HOLDS_OBJECT (&value))
expr = gtk_object_expression_new (g_value_get_object (&value));
else
expr = gtk_constant_expression_new_for_value (&value);
g_value_unset (&value);
}
g_string_free (info->constant.text, TRUE);
info->expression_type = EXPRESSION_EXPRESSION;
info->expression = expr;
}
break;
case EXPRESSION_CLOSURE:
{
GObject *object;
GClosure *closure;
guint i, n_params;
GtkExpression **params;
GtkExpression *expression;
GSList *l;
if (info->closure.object_name)
{
object = gtk_builder_lookup_object (builder, info->closure.object_name, 0, 0, error);
if (object == NULL)
return NULL;
}
else
{
object = NULL;
}
closure = gtk_builder_create_closure (builder,
info->closure.function_name,
info->closure.swapped,
object,
error);
if (closure == NULL)
return NULL;
n_params = g_slist_length (info->closure.params);
params = g_newa (GtkExpression *, n_params);
i = n_params;
for (l = info->closure.params; l; l = l->next)
{
params[--i] = expression_info_construct (builder, l->data, error);
if (params[i] == NULL)
return NULL;
}
expression = gtk_closure_expression_new (info->closure.type, closure, n_params, params);
g_free (info->closure.function_name);
g_free (info->closure.object_name);
g_slist_free_full (info->closure.params, (GDestroyNotify) free_expression_info);
info->expression_type = EXPRESSION_EXPRESSION;
info->expression = expression;
}
break;
case EXPRESSION_PROPERTY:
{
GtkExpression *expression;
GType type;
GParamSpec *pspec;
if (info->property.expression)
{
expression = expression_info_construct (builder, info->property.expression, error);
if (expression == NULL)
return NULL;
g_clear_pointer (&info->property.expression, free_expression_info);
}
else
expression = NULL;
if (info->property.this_type != G_TYPE_INVALID)
type = info->property.this_type;
else if (expression != NULL)
type = gtk_expression_get_value_type (expression);
else
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_MISSING_ATTRIBUTE,
"Lookups require a type attribute if they don't have an expression.");
return NULL;
}
if (g_type_is_a (type, G_TYPE_OBJECT))
{
GObjectClass *class = g_type_class_ref (type);
pspec = g_object_class_find_property (class, info->property.property_name);
g_type_class_unref (class);
}
else if (g_type_is_a (type, G_TYPE_INTERFACE))
{
GTypeInterface *iface = g_type_default_interface_ref (type);
pspec = g_object_interface_find_property (iface, info->property.property_name);
g_type_default_interface_unref (iface);
}
else
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_MISSING_ATTRIBUTE,
"Type `%s` does not support properties",
g_type_name (type));
return NULL;
}
if (pspec == NULL)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_MISSING_ATTRIBUTE,
"Type `%s` does not have a property name `%s`",
g_type_name (type), info->property.property_name);
return NULL;
}
expression = gtk_property_expression_new_for_pspec (expression, pspec);
g_free (info->property.property_name);
info->expression_type = EXPRESSION_EXPRESSION;
info->expression = expression;
}
break;
default:
g_return_val_if_reached (NULL);
}
return gtk_expression_ref (info->expression);
}
static void
parse_signal (ParserData *data,
const char *element_name,
const char **names,
const char **values,
GError **error)
{
SignalInfo *info;
const char *name;
const char *handler = NULL;
const char *object = NULL;
gboolean after = FALSE;
gboolean swapped = -1;
ObjectInfo *object_info;
guint id = 0;
GQuark detail = 0;
object_info = state_peek_info (data, ObjectInfo);
if (!object_info ||
!(object_info->tag_type == TAG_OBJECT||
object_info->tag_type == TAG_TEMPLATE))
{
error_invalid_tag (data, element_name, NULL, error);
return;
}
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_STRING, "name", &name,
G_MARKUP_COLLECT_STRING, "handler", &handler,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "object", &object,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "last_modification_time", NULL,
G_MARKUP_COLLECT_BOOLEAN|G_MARKUP_COLLECT_OPTIONAL, "after", &after,
G_MARKUP_COLLECT_TRISTATE|G_MARKUP_COLLECT_OPTIONAL, "swapped", &swapped,
G_MARKUP_COLLECT_INVALID))
{
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
if (!g_signal_parse_name (name, object_info->type, &id, &detail, FALSE))
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_SIGNAL,
"Invalid signal '%s' for type '%s'",
name, g_type_name (object_info->type));
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
/* Swapped defaults to FALSE except when object is set */
if (swapped == -1)
{
if (object)
swapped = TRUE;
else
swapped = FALSE;
}
info = g_slice_new0 (SignalInfo);
info->id = id;
info->detail = detail;
info->handler = g_strdup (handler);
if (after)
info->flags |= G_CONNECT_AFTER;
if (swapped)
info->flags |= G_CONNECT_SWAPPED;
info->connect_object_name = g_strdup (object);
state_push (data, info);
info->tag_type = TAG_SIGNAL;
}
/* Called by GtkBuilder */
void
_free_signal_info (SignalInfo *info,
gpointer user_data)
{
g_free (info->handler);
g_free (info->connect_object_name);
g_free (info->object_name);
g_slice_free (SignalInfo, info);
}
void
_free_binding_info (BindingInfo *info,
gpointer user)
{
g_free (info->source);
g_free (info->source_property);
g_slice_free (BindingInfo, info);
}
void
free_binding_expression_info (BindingExpressionInfo *info)
{
if (info->expr)
free_expression_info (info->expr);
g_free (info->object_name);
g_slice_free (BindingExpressionInfo, info);
}
static void
free_requires_info (RequiresInfo *info,
gpointer user_data)
{
g_free (info->library);
g_slice_free (RequiresInfo, info);
}
static void
parse_interface (ParserData *data,
const char *element_name,
const char **names,
const char **values,
GError **error)
{
const char *domain = NULL;
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "domain", &domain,
G_MARKUP_COLLECT_INVALID))
{
_gtk_builder_prefix_error (data->builder, &data->ctx, error);
return;
}
if (domain)
{
if (data->domain && strcmp (data->domain, domain) != 0)
{
g_warning ("%s: interface domain '%s' overrides programmatic value '%s'",
data->filename, domain, data->domain);
g_free (data->domain);
}
data->domain = g_strdup (domain);
gtk_builder_set_translation_domain (data->builder, data->domain);
}
}
static SubParser *
create_subparser (GObject *object,
GObject *child,
const char *element_name,
GtkBuildableParser *parser,
gpointer user_data)
{
SubParser *subparser;
subparser = g_slice_new0 (SubParser);
subparser->object = object;
subparser->child = child;
subparser->tagname = g_strdup (element_name);
subparser->start = element_name;
subparser->parser = g_memdup (parser, sizeof (GtkBuildableParser));
subparser->data = user_data;
return subparser;
}
static void
free_subparser (SubParser *subparser)
{
g_free (subparser->tagname);
g_slice_free (SubParser, subparser);
}
static gboolean
subparser_start (GtkBuildableParseContext *context,
const char *element_name,
const char **names,
const char **values,
ParserData *data,
GError **error)
{
SubParser *subparser = data->subparser;
if (!subparser->start &&
strcmp (element_name, subparser->tagname) == 0)
subparser->start = element_name;
if (subparser->start)
{
if (subparser->parser->start_element)
subparser->parser->start_element (context,
element_name, names, values,
subparser->data, error);
return FALSE;
}
return TRUE;
}
static void
subparser_end (GtkBuildableParseContext *context,
const char *element_name,
ParserData *data,
GError **error)
{
if (data->subparser->parser->end_element)
data->subparser->parser->end_element (context, element_name,
data->subparser->data, error);
if (*error)
return;
if (strcmp (data->subparser->start, element_name) != 0)
return;
gtk_buildable_custom_tag_end (GTK_BUILDABLE (data->subparser->object),
data->builder,
data->subparser->child,
element_name,
data->subparser->data);
g_free (data->subparser->parser);
if (_gtk_builder_lookup_failed (data->builder, error))
return;
if (GTK_BUILDABLE_GET_IFACE (data->subparser->object)->custom_finished)
data->custom_finalizers = g_slist_prepend (data->custom_finalizers,
data->subparser);
else
free_subparser (data->subparser);
data->subparser = NULL;
}
static gboolean
parse_custom (GtkBuildableParseContext *context,
const char *element_name,
const char **names,
const char **values,
ParserData *data,
GError **error)
{
CommonInfo* parent_info;
GtkBuildableParser parser;
gpointer subparser_data;
GObject *object;
GObject *child;
parent_info = state_peek_info (data, CommonInfo);
if (!parent_info)
return FALSE;
if (parent_info->tag_type == TAG_OBJECT ||
parent_info->tag_type == TAG_TEMPLATE)
{
ObjectInfo* object_info = (ObjectInfo*)parent_info;
if (!object_info->object)
{
object_info->properties = g_slist_reverse (object_info->properties);
object_info->object = _gtk_builder_construct (data->builder,
object_info,
error);
if (!object_info->object)
return TRUE; /* A GError is already set */
}
g_assert (object_info->object);
object = object_info->object;
child = NULL;
}
else if (parent_info->tag_type == TAG_CHILD)
{
ChildInfo* child_info = (ChildInfo*)parent_info;
_gtk_builder_add (data->builder, child_info);
object = ((ObjectInfo*)child_info->parent)->object;
child = child_info->object;
}
else
return FALSE;
if (!gtk_buildable_custom_tag_start (GTK_BUILDABLE (object),
data->builder,
child,
element_name,
&parser,
&subparser_data))
return FALSE;
data->subparser = create_subparser (object, child, element_name,
&parser, subparser_data);
if (parser.start_element)
parser.start_element (context,
element_name, names, values,
subparser_data, error);
return TRUE;
}
static void
start_element (GtkBuildableParseContext *context,
const char *element_name,
const char **names,
const char **values,
gpointer user_data,
GError **error)
{
ParserData *data = (ParserData*)user_data;
#ifdef G_ENABLE_DEBUG
if (GTK_DEBUG_CHECK (BUILDER))
{
GString *tags = g_string_new ("");
int i;
for (i = 0; names[i]; i++)
g_string_append_printf (tags, "%s=\"%s\" ", names[i], values[i]);
if (i)
{
g_string_insert_c (tags, 0, ' ');
g_string_truncate (tags, tags->len - 1);
}
g_message ("<%s%s>", element_name, tags->str);
g_string_free (tags, TRUE);
}
#endif
if (!data->last_element && strcmp (element_name, "interface") != 0)
{
error_unhandled_tag (data, element_name, error);
return;
}
data->last_element = element_name;
if (data->subparser)
{
if (!subparser_start (context, element_name, names, values, data, error))
return;
}
if (strcmp (element_name, "object") == 0)
parse_object (context, data, element_name, names, values, error);
else if (data->requested_objects && !data->inside_requested_object)
{
/* If outside a requested object, simply ignore this tag */
}
else if (strcmp (element_name, "property") == 0)
parse_property (data, element_name, names, values, error);
else if (strcmp (element_name, "binding") == 0)
parse_binding (data, element_name, names, values, error);
else if (strcmp (element_name, "child") == 0)
parse_child (data, element_name, names, values, error);
else if (strcmp (element_name, "signal") == 0)
parse_signal (data, element_name, names, values, error);
else if (strcmp (element_name, "template") == 0)
parse_template (context, data, element_name, names, values, error);
else if (strcmp (element_name, "requires") == 0)
parse_requires (data, element_name, names, values, error);
else if (strcmp (element_name, "interface") == 0)
parse_interface (data, element_name, names, values, error);
else if (strcmp (element_name, "constant") == 0)
parse_constant_expression (data, element_name, names, values, error);
else if (strcmp (element_name, "closure") == 0)
parse_closure_expression (data, element_name, names, values, error);
else if (strcmp (element_name, "lookup") == 0)
parse_lookup_expression (data, element_name, names, values, error);
else if (strcmp (element_name, "menu") == 0)
_gtk_builder_menu_start (data, element_name, names, values, error);
else if (strcmp (element_name, "placeholder") == 0)
{
/* placeholder has no special treatmeant, but it needs an
* if clause to avoid an error below.
*/
}
else if (!parse_custom (context, element_name, names, values, data, error))
error_unhandled_tag (data, element_name, error);
}
const char *
_gtk_builder_parser_translate (const char *domain,
const char *context,
const char *text)
{
const char *s;
if (context)
s = g_dpgettext2 (domain, context, text);
else
s = g_dgettext (domain, text);
return s;
}
static void
end_element (GtkBuildableParseContext *context,
const char *element_name,
gpointer user_data,
GError **error)
{
ParserData *data = (ParserData*)user_data;
GTK_NOTE (BUILDER, g_message ("</%s>", element_name));
if (data->subparser && data->subparser->start)
{
subparser_end (context, element_name, data, error);
return;
}
if (data->requested_objects && !data->inside_requested_object)
{
/* If outside a requested object, simply ignore this tag */
}
else if (strcmp (element_name, "property") == 0)
{
PropertyInfo *prop_info = state_pop_info (data, PropertyInfo);
CommonInfo *info = state_peek_info (data, CommonInfo);
g_assert (info != NULL);
/* Normal properties */
if (info->tag_type == TAG_OBJECT ||
info->tag_type == TAG_TEMPLATE)
{
ObjectInfo *object_info = (ObjectInfo*)info;
if (prop_info->translatable && prop_info->text->len)
{
const char *translated;
translated = _gtk_builder_parser_translate (data->domain,
prop_info->context,
prop_info->text->str);
g_string_assign (prop_info->text, translated);
}
object_info->properties = g_slist_prepend (object_info->properties, prop_info);
}
else
g_assert_not_reached ();
}
else if (strcmp (element_name, "binding") == 0)
{
BindingExpressionInfo *binfo = state_pop_info (data, BindingExpressionInfo);
CommonInfo *info = state_peek_info (data, CommonInfo);
g_assert (info != NULL);
if (binfo->expr == NULL)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_TAG,
"Binding tag requires an expression");
free_binding_expression_info (binfo);
}
else if (info->tag_type == TAG_OBJECT ||
info->tag_type == TAG_TEMPLATE)
{
ObjectInfo *object_info = (ObjectInfo*)info;
object_info->bindings = g_slist_prepend (object_info->bindings, binfo);
}
else
g_assert_not_reached ();
}
else if (strcmp (element_name, "object") == 0 ||
strcmp (element_name, "template") == 0)
{
ObjectInfo *object_info = state_pop_info (data, ObjectInfo);
ChildInfo* child_info = state_peek_info (data, ChildInfo);
PropertyInfo* prop_info = state_peek_info (data, PropertyInfo);
if (child_info && child_info->tag_type != TAG_CHILD)
child_info = NULL;
if (prop_info && prop_info->tag_type != TAG_PROPERTY)
prop_info = NULL;
if (data->requested_objects && data->inside_requested_object &&
(data->cur_object_level == data->requested_object_level))
{
GTK_NOTE (BUILDER,
g_message ("requested object end found at level %d",
data->requested_object_level));
data->inside_requested_object = FALSE;
}
--data->cur_object_level;
g_assert (data->cur_object_level >= 0);
object_info->object = builder_construct (data, object_info, error);
if (!object_info->object)
{
free_object_info (object_info);
return;
}
if (child_info)
child_info->object = object_info->object;
if (prop_info)
g_string_assign (prop_info->text, object_info->id);
if (GTK_IS_BUILDABLE (object_info->object) &&
GTK_BUILDABLE_GET_IFACE (object_info->object)->parser_finished)
data->finalizers = g_slist_prepend (data->finalizers, object_info->object);
_gtk_builder_add_signals (data->builder, object_info->signals);
free_object_info (object_info);
}
else if (strcmp (element_name, "child") == 0)
{
ChildInfo *child_info = state_pop_info (data, ChildInfo);
_gtk_builder_add (data->builder, child_info);
free_child_info (child_info);
}
else if (strcmp (element_name, "signal") == 0)
{
SignalInfo *signal_info = state_pop_info (data, SignalInfo);
ObjectInfo *object_info = (ObjectInfo*)state_peek_info (data, CommonInfo);
g_assert (object_info != NULL);
signal_info->object_name = g_strdup (object_info->id);
object_info->signals = g_slist_prepend (object_info->signals, signal_info);
}
else if (strcmp (element_name, "constant") == 0 ||
strcmp (element_name, "closure") == 0 ||
strcmp (element_name, "lookup") == 0)
{
ExpressionInfo *expression_info = state_pop_info (data, ExpressionInfo);
CommonInfo *parent_info = state_peek_info (data, CommonInfo);
g_assert (parent_info != NULL);
if (parent_info->tag_type == TAG_BINDING_EXPRESSION)
{
BindingExpressionInfo *expr_info = (BindingExpressionInfo *) parent_info;
expr_info->expr = expression_info;
}
else if (parent_info->tag_type == TAG_PROPERTY)
{
PropertyInfo *prop_info = (PropertyInfo *) parent_info;
prop_info->value = expression_info_construct (data->builder, expression_info, error);
}
else if (parent_info->tag_type == TAG_EXPRESSION)
{
ExpressionInfo *expr_info = (ExpressionInfo *) parent_info;
switch (expr_info->expression_type)
{
case EXPRESSION_CLOSURE:
expr_info->closure.params = g_slist_prepend (expr_info->closure.params, expression_info);
break;
case EXPRESSION_PROPERTY:
expr_info->property.expression = expression_info;
break;
case EXPRESSION_EXPRESSION:
case EXPRESSION_CONSTANT:
default:
g_assert_not_reached ();
break;
}
}
else
{
g_assert_not_reached ();
}
}
else if (strcmp (element_name, "requires") == 0)
{
RequiresInfo *req_info = state_pop_info (data, RequiresInfo);
/* TODO: Allow third party widget developers to check their
* required versions, possibly throw a signal allowing them
* to check their library versions here.
*/
if (!strcmp (req_info->library, "gtk+"))
{
if (!GTK_CHECK_VERSION (req_info->major, req_info->minor, 0))
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_VERSION_MISMATCH,
"Required %s version %d.%d, current version is %d.%d",
req_info->library,
req_info->major, req_info->minor,
GTK_MAJOR_VERSION, GTK_MINOR_VERSION);
_gtk_builder_prefix_error (data->builder, context, error);
}
}
free_requires_info (req_info, NULL);
}
else if (strcmp (element_name, "interface") == 0)
{
}
else if (strcmp (element_name, "menu") == 0)
{
_gtk_builder_menu_end (data);
}
else if (strcmp (element_name, "placeholder") == 0)
{
}
else
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_UNHANDLED_TAG,
"Unhandled tag: <%s>", element_name);
_gtk_builder_prefix_error (data->builder, context, error);
}
}
/* Called for character data */
/* text is not nul-terminated */
static void
text (GtkBuildableParseContext *context,
const char *text,
gsize text_len,
gpointer user_data,
GError **error)
{
ParserData *data = (ParserData*)user_data;
CommonInfo *info;
if (data->subparser && data->subparser->start)
{
GError *tmp_error = NULL;
if (data->subparser->parser->text)
data->subparser->parser->text (context, text, text_len,
data->subparser->data, &tmp_error);
if (tmp_error)
g_propagate_error (error, tmp_error);
return;
}
if (!data->stack)
return;
info = state_peek_info (data, CommonInfo);
g_assert (info != NULL);
if (strcmp (gtk_buildable_parse_context_get_element (context), "property") == 0)
{
PropertyInfo *prop_info = (PropertyInfo*)info;
g_string_append_len (prop_info->text, text, text_len);
}
else if (strcmp (gtk_buildable_parse_context_get_element (context), "constant") == 0)
{
ExpressionInfo *expr_info = (ExpressionInfo *) info;
g_string_append_len (expr_info->constant.text, text, text_len);
}
else if (strcmp (gtk_buildable_parse_context_get_element (context), "lookup") == 0)
{
ExpressionInfo *expr_info = (ExpressionInfo *) info;
while (g_ascii_isspace (*text) && text_len > 0)
{
text++;
text_len--;
}
while (text_len > 0 && g_ascii_isspace (text[text_len - 1]))
text_len--;
if (expr_info->property.expression == NULL && text_len > 0)
{
ExpressionInfo *constant = g_slice_new0 (ExpressionInfo);
constant->tag_type = TAG_EXPRESSION;
constant->expression_type = EXPRESSION_CONSTANT;
constant->constant.type = G_TYPE_INVALID;
constant->constant.text = g_string_new_len (text, text_len);
expr_info->property.expression = constant;
}
}
}
static void
free_info (CommonInfo *info)
{
switch (info->tag_type)
{
case TAG_OBJECT:
case TAG_TEMPLATE:
free_object_info ((ObjectInfo *)info);
break;
case TAG_CHILD:
free_child_info ((ChildInfo *)info);
break;
case TAG_BINDING:
_free_binding_info ((BindingInfo *)info, NULL);
break;
case TAG_BINDING_EXPRESSION:
free_binding_expression_info ((BindingExpressionInfo *) info);
break;
case TAG_PROPERTY:
free_property_info ((PropertyInfo *)info);
break;
case TAG_SIGNAL:
_free_signal_info ((SignalInfo *)info, NULL);
break;
case TAG_REQUIRES:
free_requires_info ((RequiresInfo *)info, NULL);
break;
case TAG_EXPRESSION:
free_expression_info ((ExpressionInfo *)info);
break;
default:
g_assert_not_reached ();
}
}
static const GtkBuildableParser parser = {
start_element,
end_element,
text,
NULL,
};
void
_gtk_builder_parser_parse_buffer (GtkBuilder *builder,
const char *filename,
const char *buffer,
gssize length,
const char **requested_objs,
GError **error)
{
const char * domain;
ParserData data;
GSList *l;
gint64 before = GDK_PROFILER_CURRENT_TIME;
/* Store the original domain so that interface domain attribute can be
* applied for the builder and the original domain can be restored after
* parsing has finished. This allows subparsers to translate elements with
* gtk_builder_get_translation_domain() without breaking the ABI or API
*/
domain = gtk_builder_get_translation_domain (builder);
memset (&data, 0, sizeof (ParserData));
data.builder = builder;
data.filename = filename;
data.domain = g_strdup (domain);
data.object_ids = g_hash_table_new_full (g_str_hash, g_str_equal,
(GDestroyNotify)g_free, NULL);
if (requested_objs)
{
data.inside_requested_object = FALSE;
data.requested_objects = requested_objs;
}
else
{
/* get all the objects */
data.inside_requested_object = TRUE;
}
gtk_buildable_parse_context_init (&data.ctx, &parser, &data);
if (!gtk_buildable_parse_context_parse (&data.ctx, buffer, length, error))
goto out;
if (_gtk_builder_lookup_failed (builder, error))
goto out;
if (!_gtk_builder_finish (builder, error))
goto out;
/* Custom parser_finished */
data.custom_finalizers = g_slist_reverse (data.custom_finalizers);
for (l = data.custom_finalizers; l; l = l->next)
{
SubParser *sub = (SubParser*)l->data;
gtk_buildable_custom_finished (GTK_BUILDABLE (sub->object),
builder,
sub->child,
sub->tagname,
sub->data);
if (_gtk_builder_lookup_failed (builder, error))
goto out;
}
/* Common parser_finished, for all created objects */
data.finalizers = g_slist_reverse (data.finalizers);
for (l = data.finalizers; l; l = l->next)
{
GtkBuildable *buildable = (GtkBuildable*)l->data;
gtk_buildable_parser_finished (GTK_BUILDABLE (buildable), builder);
if (_gtk_builder_lookup_failed (builder, error))
goto out;
}
out:
g_slist_free_full (data.stack, (GDestroyNotify)free_info);
g_slist_free_full (data.custom_finalizers, (GDestroyNotify)free_subparser);
g_slist_free (data.finalizers);
g_free (data.domain);
g_hash_table_destroy (data.object_ids);
gtk_buildable_parse_context_free (&data.ctx);
/* restore the original domain */
gtk_builder_set_translation_domain (builder, domain);
if (GDK_PROFILER_IS_RUNNING)
{
guint64 after = GDK_PROFILER_CURRENT_TIME;
if (after - before > 500000) /* half a millisecond */
{
gdk_profiler_add_mark (before, after - before, "builder load", filename);
}
}
}
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