1<?php
2/**
3 * Smarty Internal Plugin Compile Eval
4 * Compiles the {eval} tag.
5 *
6 * @package    Smarty
7 * @subpackage Compiler
8 * @author     Uwe Tews
9 */
10
11/**
12 * Smarty Internal Plugin Compile Eval Class
13 *
14 * @package    Smarty
15 * @subpackage Compiler
16 */
17class Smarty_Internal_Compile_Eval extends Smarty_Internal_CompileBase
18{
19    /**
20     * Attribute definition: Overwrites base class.
21     *
22     * @var array
23     * @see Smarty_Internal_CompileBase
24     */
25    public $required_attributes = array('var');
26    /**
27     * Attribute definition: Overwrites base class.
28     *
29     * @var array
30     * @see Smarty_Internal_CompileBase
31     */
32    public $optional_attributes = array('assign');
33    /**
34     * Attribute definition: Overwrites base class.
35     *
36     * @var array
37     * @see Smarty_Internal_CompileBase
38     */
39    public $shorttag_order = array('var', 'assign');
40
41    /**
42     * Compiles code for the {eval} tag
43     *
44     * @param  array  $args     array with attributes from parser
45     * @param  object $compiler compiler object
46     *
47     * @return string compiled code
48     */
49    public function compile($args, $compiler)
50    {
51        $this->required_attributes = array('var');
52        $this->optional_attributes = array('assign');
53        // check and get attributes
54        $_attr = $this->getAttributes($compiler, $args);
55        if (isset($_attr['assign'])) {
56            // output will be stored in a smarty variable instead of being displayed
57            $_assign = $_attr['assign'];
58        }
59
60        // create template object
61        $_output = "\$_template = new {$compiler->smarty->template_class}('eval:'." . $_attr['var'] . ", \$_smarty_tpl->smarty, \$_smarty_tpl);";
62        //was there an assign attribute?
63        if (isset($_assign)) {
64            $_output .= "\$_smarty_tpl->assign($_assign,\$_template->fetch());";
65        } else {
66            $_output .= "echo \$_template->fetch();";
67        }
68
69        return "<?php $_output ?>";
70    }
71}
72