/*

 * This file is part of ltrace.

 * Copyright (C) 2011 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 "lens.h"

#include "lens_default.h"

#include "type.h"

#include "value.h"

int

format_argument(FILE *stream, struct value *value,

		struct value_dict *arguments)

{

	/* Find the closest enclosing parental value whose type has a

	 * lens assigned.  */

	struct value *parent;

	for (parent = value; (parent != NULL && parent->type != NULL

			      && parent->type->lens == NULL);

	     parent = parent->parent)

		;

	struct lens *lens = &default_lens;

	if (parent != NULL && parent->type != NULL

	    && parent->type->lens != NULL)

		lens = parent->type->lens;

	return lens_format(lens, stream, value, arguments);

}

int

lens_format(struct lens *lens, FILE *stream, struct value *value,

	    struct value_dict *arguments)

{

	assert(lens->format_cb != NULL);

	return lens->format_cb(lens, stream, value, arguments);

}

void

lens_destroy(struct lens *lens)

{

	if (lens != NULL

	    && lens->destroy_cb != NULL)

		lens->destroy_cb(lens);

}