1 <?php

     2 /**

     3  * Smarty Internal Plugin Compile Assign

     4  * Compiles the {assign} tag

     5  *

     6  * @package    Smarty

     7  * @subpackage Compiler

     8  * @author     Uwe Tews

     9  */

    10 

    11 /**

    12  * Smarty Internal Plugin Compile Assign Class

    13  *

    14  * @package    Smarty

    15  * @subpackage Compiler

    16  */

    17 class Smarty_Internal_Compile_Assign extends Smarty_Internal_CompileBase {

    18     /**

    19      * Compiles code for the {assign} tag

    20      *

    21      * @param  array $args array with attributes from parser

    22      * @param  object $compiler compiler object

    23      * @param  array $parameter array with compilation parameter

    24      *

    25      * @return string compiled code

    26      */

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

    28         // the following must be assigned at runtime because it will be overwritten in Smarty_Internal_Compile_Append

    29         $this->required_attributes = array('var', 'value');

    30         $this->shorttag_order = array('var', 'value');

    31         $this->optional_attributes = array('scope');

    32         $_nocache = 'null';

    33         $_scope = Smarty::SCOPE_LOCAL;

    34         // check and get attributes

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

    36         // nocache ?

    37         if ($compiler->tag_nocache || $compiler->nocache) {

    38             $_nocache = 'true';

    39             // create nocache var to make it know for further compiling

    40             if (isset($compiler->template->tpl_vars[trim($_attr['var'], "'")])) {

    41                 $compiler->template->tpl_vars[trim($_attr['var'], "'")]->nocache = true;

    42             } else {

    43                 $compiler->template->tpl_vars[trim($_attr['var'], "'")] = new Smarty_Variable(null, true);

    44             }

    45         }

    46         // scope setup

    47         if (isset($_attr['scope'])) {

    48             $_attr['scope'] = trim($_attr['scope'], "'\"");

    49             if ($_attr['scope'] == 'parent') {

    50                 $_scope = Smarty::SCOPE_PARENT;

    51             } elseif ($_attr['scope'] == 'root') {

    52                 $_scope = Smarty::SCOPE_ROOT;

    53             } elseif ($_attr['scope'] == 'global') {

    54                 $_scope = Smarty::SCOPE_GLOBAL;

    55             } else {

    56                 $compiler->trigger_template_error('illegal value for "scope" attribute', $compiler->lex->taglineno);

    57             }

    58         }

    59         // compiled output

    60         if (isset($parameter['smarty_internal_index'])) {

    61             $output = "<?php \$_smarty_tpl->createLocalArrayVariable($_attr[var], $_nocache, $_scope);\n\$_smarty_tpl->tpl_vars[$_attr[var]]->value$parameter[smarty_internal_index] = $_attr[value];";

    62         } else {

    63             // implement Smarty2's behaviour of variables assigned by reference

    64             if ($compiler->template->smarty instanceof SmartyBC) {

    65                 $output = "<?php if (isset(\$_smarty_tpl->tpl_vars[$_attr[var]])) {\$_smarty_tpl->tpl_vars[$_attr[var]] = clone \$_smarty_tpl->tpl_vars[$_attr[var]];";

    66                 $output .= "\n\$_smarty_tpl->tpl_vars[$_attr[var]]->value = $_attr[value]; \$_smarty_tpl->tpl_vars[$_attr[var]]->nocache = $_nocache; \$_smarty_tpl->tpl_vars[$_attr[var]]->scope = $_scope;";

    67                 $output .= "\n} else \$_smarty_tpl->tpl_vars[$_attr[var]] = new Smarty_Variable($_attr[value], $_nocache, $_scope);";

    68             } else {

    69                 $output = "<?php \$_smarty_tpl->tpl_vars[$_attr[var]] = new Smarty_Variable($_attr[value], $_nocache, $_scope);";

    70             }

    71         }

    72         if ($_scope == Smarty::SCOPE_PARENT) {

    73             $output .= "\nif (\$_smarty_tpl->parent != null) \$_smarty_tpl->parent->tpl_vars[$_attr[var]] = clone \$_smarty_tpl->tpl_vars[$_attr[var]];";

    74         } elseif ($_scope == Smarty::SCOPE_ROOT || $_scope == Smarty::SCOPE_GLOBAL) {

    75             $output .= "\n\$_ptr = \$_smarty_tpl->parent; while (\$_ptr != null) {\$_ptr->tpl_vars[$_attr[var]] = clone \$_smarty_tpl->tpl_vars[$_attr[var]]; \$_ptr = \$_ptr->parent; }";

    76         }

    77         if ($_scope == Smarty::SCOPE_GLOBAL) {

    78             $output .= "\nSmarty::\$global_tpl_vars[$_attr[var]] = clone \$_smarty_tpl->tpl_vars[$_attr[var]];";

    79         }

    80         $output .= '?>';

    81 

    82         return $output;

    83     }

    84 }