<?php

/**

 * Smarty Internal Plugin Compile Break

 * Compiles the {break} tag

 *

 * @package    Smarty

 * @subpackage Compiler

 * @author     Uwe Tews

 */

/**

 * Smarty Internal Plugin Compile Break Class

 *

 * @package    Smarty

 * @subpackage Compiler

 */

class Smarty_Internal_Compile_Break extends Smarty_Internal_CompileBase {

    /**

     * Attribute definition: Overwrites base class.

     *

     * @var array

     * @see Smarty_Internal_CompileBase

     */

    public $optional_attributes = array('levels');

    /**

     * Attribute definition: Overwrites base class.

     *

     * @var array

     * @see Smarty_Internal_CompileBase

     */

    public $shorttag_order = array('levels');

    /**

     * Compiles code for the {break} tag

     *

     * @param  array $args array with attributes from parser

     * @param  object $compiler compiler object

     * @param  array $parameter array with compilation parameter

     *

     * @return string compiled code

     */

    public function compile($args, $compiler, $parameter) {

        static $_is_loopy = array('for' => true, 'foreach' => true, 'while' => true, 'section' => true);

        // check and get attributes

        $_attr = $this->getAttributes($compiler, $args);

        if ($_attr['nocache'] === true) {

            $compiler->trigger_template_error('nocache option not allowed', $compiler->lex->taglineno);

        }

        if (isset($_attr['levels'])) {

            if (!is_numeric($_attr['levels'])) {

                $compiler->trigger_template_error('level attribute must be a numeric constant', $compiler->lex->taglineno);

            }

            $_levels = $_attr['levels'];

        } else {

            $_levels = 1;

        }

        $level_count = $_levels;

        $stack_count = count($compiler->_tag_stack) - 1;

        while ($level_count > 0 && $stack_count >= 0) {

            if (isset($_is_loopy[$compiler->_tag_stack[$stack_count][0]])) {

                $level_count--;

            }

            $stack_count--;

        }

        if ($level_count != 0) {

            $compiler->trigger_template_error("cannot break {$_levels} level(s)", $compiler->lex->taglineno);

        }

        return "<?php break {$_levels};?>";

    }

}