/*

 * This file is part of ltrace.

 * Copyright (C) 2011,2012 Petr Machata, Red Hat Inc.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License as

 * published by the Free Software Foundation; either version 2 of the

 * License, or (at your option) any later version.

 *

 * This program 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

 * General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA

 * 02110-1301 USA

 */

#include <assert.h>

#include <string.h>

#include <stdlib.h>

#include "value_dict.h"

#include "value.h"

struct named_value

{

	const char *name;

	struct value value;

	int own_name;

};

void

val_dict_init(struct value_dict *dict)

{

	VECT_INIT(&dict->numbered, struct value);

	VECT_INIT(&dict->named, struct named_value);

}

static int

value_clone_cb(struct value *tgt, const struct value *src, void *data)

{

	return value_clone(tgt, src);

}

static void

value_dtor(struct value *val, void *data)

{

	value_destroy(val);

}

static int

named_value_clone(struct named_value *tgt,

		  const struct named_value *src, void *data)

{

	tgt->name = strdup(src->name);

	if (tgt->name == NULL)

		return -1;

	tgt->own_name = 1;

	if (value_clone(&tgt->value, &src->value) < 0) {

		free((char *)tgt->name);

		return -1;

	}

	return 0;

}

static void

named_value_dtor(struct named_value *named, void *data)

{

	if (named->own_name)

		free((char *)named->name);

	value_destroy(&named->value);

}

int

val_dict_clone(struct value_dict *target, struct value_dict *source)

{

	if (VECT_CLONE(&target->numbered, &source->numbered, struct value,

		       value_clone_cb, value_dtor, NULL) < 0)

		return -1;

	if (VECT_CLONE(&target->named, &source->named, struct named_value,

		       named_value_clone, named_value_dtor, NULL) < 0) {

		VECT_DESTROY(&target->numbered, struct value, value_dtor, NULL);

		return -1;

	}

	return 0;

}

int

val_dict_push_next(struct value_dict *dict, struct value *val)

{

	return VECT_PUSHBACK(&dict->numbered, val);

}

int

val_dict_push_named(struct value_dict *dict, struct value *val,

		    const char *name, int own_name)

{

	if (own_name && (name = strdup(name)) == NULL)

		return -1;

	struct named_value element = { name, *val, own_name };

	if (VECT_PUSHBACK(&dict->named, &element) < 0) {

		if (own_name)

			free((char *)name);

		return -1;

	}

	return 0;

}

size_t

val_dict_count(struct value_dict *dict)

{

	return vect_size(&dict->numbered);

}

struct value *

val_dict_get_num(struct value_dict *dict, size_t num)

{

	assert(num < vect_size(&dict->numbered));

	return VECT_ELEMENT(&dict->numbered, struct value, num);

}

struct value *

val_dict_get_name(struct value_dict *dict, const char *name)

{

	size_t i;

	for (i = 0; i < vect_size(&dict->named); ++i) {

		struct named_value *element

			= VECT_ELEMENT(&dict->named, struct named_value, i);

		if (strcmp(element->name, name) == 0)

			return &element->value;

	}

	return NULL;

}

void

val_dict_destroy(struct value_dict *dict)

{

	if (dict == NULL)

		return;

	VECT_DESTROY(&dict->numbered, struct value, value_dtor, NULL);

	VECT_DESTROY(&dict->named, struct named_value, named_value_dtor, NULL);

}