/****************************************************************************
 * KONOHA COPYRIGHT, LICENSE NOTICE, AND DISCRIMER  
 * 
 * Copyright (c) 2005-2008, Kimio Kuramitsu <kimio at ynu.ac.jp>
 *           (c) 2008-      Konoha Software Foundation  
 * All rights reserved.
 * 
 * You may choose one of the following two licenses when you use konoha. 
 * See www.konohaware.org/license.html for further information.
 * 
 * (1) GNU General Public License 2.0      (with    KONOHA_UNDER_GPL2)
 * (2) Konoha Software Foundation License 1.0
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *  
 ****************************************************************************/

/* ************************************************************************ */

#include"commons.h"

/* ************************************************************************ */

#ifdef __cplusplus 
extern "C" {
#endif

/* ======================================================================== */
/* [global] */

#define tmeta(ctx) ((Context*)ctx)->runtime->tmetaHashMap

/* ======================================================================== */
/* [methods] */

void knh_metadata_set(Ctx *ctx, Object *b, String *key, Any *value)
{
	DictMap *dm = (DictMap*)knh_HashMap_get(ctx, tmeta(ctx), (knh_uint_t)b, NULL);
	if(IS_NOTNULL(value)) {
		if(IS_NULL(dm)) {
			dm = new_DictMap(ctx, 2);
			knh_HashMap_put(ctx, tmeta(ctx), (knh_uint_t)b, NULL, dm);
			knh_Object_setMetaData(b, 1);
		}
		knh_DictMap_put(ctx, dm, key, value);
	}
	else{
		if(IS_NOTNULL(dm)) {
			knh_DictMap_remove(ctx, dm, key);
		}
	}
}

/* ------------------------------------------------------------------------ */

Any *knh_metadata_get(Ctx *ctx, Object *b, knh_bytes_t key)
{
	if(knh_Object_hasMetaData(b)) {
		DictMap *dm = (DictMap*)knh_HashMap_get(ctx, tmeta(ctx), (knh_uint_t)b, NULL);
		if(IS_NOTNULL(dm)) {
			return knh_DictMap_getb(ctx, dm, key);
		}
	}
	return Null;
}

/* ------------------------------------------------------------------------ */

void knh_metadata_clear(Ctx *ctx, Object *b)
{
	DEBUG("Removing metadata %p ..\n", b);
	knh_Object_setMetaData(b, 0);
	knh_HashMap_remove(ctx, tmeta(ctx), (knh_uint_t)b, NULL);
}

/* ------------------------------------------------------------------------ */

//
//void knh_Object_setmeta(Ctx *ctx, Object *b, DictMap *dm)
//{
//	CHECK_knh_Object_setmeta;
//#ifdef OF_METADATA
//	KNH_ASSERT(!knh_Object_hasMetaData(b));
//	knh_HashMap_put(ctx, tmeta(ctx), (knh_uint_t)b, NULL, dm);
//	knh_Object_setflag(b, OF_METADATA);
//#endif
//}
//
///* ------------------------------------------------------------------------ */
//
///* @method[PRIVATE] DictMap Object.meta() */
//
//
//DictMap *knh_Object_meta(Ctx *ctx, Object *b)
//{
//#ifdef OF_METADATA
//	if(knh_Object_isflag(b, OF_METADATA)) {
//		return knh_HashMap_get(ctx, tmeta(ctx), (knh_uint_t)b, NULL);
//	}
//#endif
//	return Null;
//}



#ifdef __cplusplus
}
#endif
