ThinkPHP/Library/Vendor/Smarty/sysplugins/smarty_internal_compile_for.php

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<?php
/**
 * Smarty Internal Plugin Compile For
 *
 * Compiles the {for} {forelse} {/for} tags
 *
 * @package Smarty
 * @subpackage Compiler
 * @author Uwe Tews
 */

/**
 * Smarty Internal Plugin Compile For Class
 *
 * @package Smarty
 * @subpackage Compiler
 */
class Smarty_Internal_Compile_For extends Smarty_Internal_CompileBase {

    /**
     * Compiles code for the {for} tag
     *
     * Smarty 3 does implement two different sytaxes:
     *
     * - {for $var in $array}
     * For looping over arrays or iterators
     *
     * - {for $x=0; $x<$y; $x++}
     * For general loops
     *
     * The parser is gereration different sets of attribute by which this compiler can
     * determin which syntax is used.
     *
     * @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, $parameter)
    {
        if ($parameter == 0) {
            $this->required_attributes = array('start', 'to');
            $this->optional_attributes = array('max', 'step');
        } else {
            $this->required_attributes = array('start', 'ifexp', 'var', 'step');
            $this->optional_attributes = array();
        }
        // check and get attributes
        $_attr = $this->getAttributes($compiler, $args);

        $output = "<?php ";
        if ($parameter == 1) {
            foreach ($_attr['start'] as $_statement) {
                $output .= " \$_smarty_tpl->tpl_vars[$_statement[var]] = new Smarty_Variable;";
                $output .= " \$_smarty_tpl->tpl_vars[$_statement[var]]->value = $_statement[value];\n";
            }
            $output .= "  if ($_attr[ifexp]){ for (\$_foo=true;$_attr[ifexp]; \$_smarty_tpl->tpl_vars[$_attr[var]]->value$_attr[step]){\n";
        } else {
            $_statement = $_attr['start'];
            $output .= "\$_smarty_tpl->tpl_vars[$_statement[var]] = new Smarty_Variable;";