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    /**
28     * Attribute definition: Overwrites base class.
29     *
30     * @var array
31     * @see Smarty_Internal_CompileBase
32     */
33    public $optional_attributes = array('assign');
34
35    /**
36     * Attribute definition: Overwrites base class.
37     *
38     * @var array
39     * @see Smarty_Internal_CompileBase
40     */
41    public $shorttag_order = array('var', 'assign');
42
43    /**
44     * Compiles code for the {eval} tag
45     *
46     * @param array  $args     array with attributes from parser
47     * @param object $compiler compiler object
48     *
49     * @return string compiled code
50     */
51    public function compile($args, $compiler)
52    {
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        // create template object
60        $_output =
61            "\$_template = new {$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        return "<?php $_output ?>";
69    }
70}
71