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/* -*- mode: C; c-basic-offset: 4; indent-tabs-mode: nil; -*- */
/*
* Copyright (c) 2008 litl, LLC
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include <config.h>
#include <string.h>
#include <gjs/gjs-module.h>
#include <gjs/compat.h>
#include "repo.h"
#include <util/log.h>
#include <jsapi.h>
#include <girepository.h>
#include "enumeration.h"
JSObject*
gjs_lookup_enumeration(JSContext *context,
GIEnumInfo *info)
{
JSObject *ns;
JSObject *enum_obj;
ns = gjs_lookup_namespace_object(context, (GIBaseInfo*) info);
if (ns == NULL)
return NULL;
if (gjs_define_enumeration(context, ns, info,
&enum_obj))
return enum_obj;
else
return NULL;
}
static JSBool
gjs_define_enum_value(JSContext *context,
JSObject *in_object,
GIValueInfo *info)
{
const char *value_name;
char *fixed_name;
gsize i;
gint64 value_val;
jsval value_js;
value_name = g_base_info_get_name( (GIBaseInfo*) info);
value_val = g_value_info_get_value(info);
/* g-i converts enum members such as GDK_GRAVITY_SOUTH_WEST to
* Gdk.GravityType.south-west (where 'south-west' is value_name)
* Convert back to all SOUTH_WEST.
*/
fixed_name = g_ascii_strup(value_name, -1);
for (i = 0; fixed_name[i]; ++i) {
char c = fixed_name[i];
if (!(('A' <= c && c <= 'Z') ||
('0' <= c && c <= '9')))
fixed_name[i] = '_';
}
gjs_debug(GJS_DEBUG_GENUM,
"Defining enum value %s (fixed from %s) %" G_GINT64_MODIFIER "d",
fixed_name, value_name, value_val);
if (!JS_NewNumberValue(context, value_val, &value_js) ||
!JS_DefineProperty(context, in_object,
fixed_name, value_js,
NULL, NULL,
GJS_MODULE_PROP_FLAGS)) {
gjs_throw(context, "Unable to define enumeration value %s %" G_GINT64_FORMAT " (no memory most likely)",
fixed_name, value_val);
g_free(fixed_name);
return JS_FALSE;
}
g_free(fixed_name);
return JS_TRUE;
}
JSBool
gjs_define_enumeration(JSContext *context,
JSObject *in_object,
GIEnumInfo *info,
JSObject **enumeration_p)
{
const char *enum_name;
GType gtype;
JSObject *enum_obj;
jsval value;
int i;
int n_values;
/* An enumeration is simply an object containing integer attributes for
* each enum value. It does not have a special JSClass.
*
* We could make this more typesafe and also print enum values as strings
* if we created a class for each enum and made the enum values instances
* of that class. However, it would have a lot more overhead and just
* be more complicated in general. I think this is fine.
*/
enum_name = g_base_info_get_name( (GIBaseInfo*) info);
if (gjs_object_get_property(context, in_object, enum_name, &value)) {
if (!JSVAL_IS_OBJECT(value)) {
gjs_throw(context, "Existing property '%s' does not look like an enum object",
enum_name);
return JS_FALSE;
}
enum_obj = JSVAL_TO_OBJECT(value);
if (enumeration_p)
*enumeration_p = enum_obj;
return JS_TRUE;
}
enum_obj = JS_ConstructObject(context, NULL, NULL, NULL);
if (enum_obj == NULL)
return JS_FALSE;
/* https://bugzilla.mozilla.org/show_bug.cgi?id=599651 means we
* can't just pass in the global as the parent */
JS_SetParent(context, enum_obj,
gjs_get_import_global (context));
/* Fill in enum values first, so we don't define the enum itself until we're
* sure we can finish successfully.
*/
n_values = g_enum_info_get_n_values(info);
for (i = 0; i < n_values; ++i) {
GIValueInfo *value_info = g_enum_info_get_value(info, i);
gboolean failed;
failed = !gjs_define_enum_value(context, enum_obj, value_info);
g_base_info_unref( (GIBaseInfo*) value_info);
if (failed) {
return JS_FALSE;
}
}
gtype = g_registered_type_info_get_g_type((GIRegisteredTypeInfo*)info);
value = INT_TO_JSVAL(gtype);
JS_DefineProperty(context, enum_obj, "$gtype", value,
NULL, NULL, JSPROP_PERMANENT);
gjs_debug(GJS_DEBUG_GENUM,
"Defining %s.%s as %p",
g_base_info_get_namespace( (GIBaseInfo*) info),
enum_name, enum_obj);
if (!JS_DefineProperty(context, in_object,
enum_name, OBJECT_TO_JSVAL(enum_obj),
NULL, NULL,
GJS_MODULE_PROP_FLAGS)) {
gjs_throw(context, "Unable to define enumeration property (no memory most likely)");
return JS_FALSE;
}
if (enumeration_p)
*enumeration_p = enum_obj;
return JS_TRUE;
}
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