<?php
/**
* Smarty Internal Plugin Compile Assign
* Compiles the {assign} tag
*
* @package Smarty
* @subpackage Compiler
* @author Uwe Tews
*/
/**
* Smarty Internal Plugin Compile Assign Class
*
* @package Smarty
* @subpackage Compiler
*/
class Smarty_Internal_Compile_Assign extends Smarty_Internal_CompileBase
{
/**
* Compiles code for the {assign} 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)
{
// the following must be assigned at runtime because it will be overwritten in Smarty_Internal_Compile_Append
$this->required_attributes = array('var', 'value');
$this->shorttag_order = array('var', 'value');
$this->optional_attributes = array('scope');
$_nocache = 'null';
$_scope = Smarty::SCOPE_LOCAL;
// check and get attributes
$_attr = $this->getAttributes($compiler, $args);
// nocache ?
if ($compiler->tag_nocache || $compiler->nocache) {
$_nocache = 'true';
// create nocache var to make it know for further compiling
if (isset($compiler->template->tpl_vars[trim($_attr['var'], "'")])) {
$compiler->template->tpl_vars[trim($_attr['var'], "'")]->nocache = true;
} else {
$compiler->template->tpl_vars[trim($_attr['var'], "'")] = new Smarty_variable(null, true);
}
}
// scope setup
if (isset($_attr['scope'])) {
$_attr['scope'] = trim($_attr['scope'], "'\"");
if ($_attr['scope'] == 'parent') {
$_scope = Smarty::SCOPE_PARENT;
} elseif ($_attr['scope'] == 'root') {
$_scope = Smarty::SCOPE_ROOT;
} elseif ($_attr['scope'] == 'global') {
$_scope = Smarty::SCOPE_GLOBAL;
} else {
$compiler->trigger_template_error('illegal value for "scope" attribute', $compiler->lex->taglineno);
}
}
// compiled output
if (isset($parameter['smarty_internal_index'])) {
$output = "<?php \$_smarty_tpl->createLocalArrayVariable($_attr[var], $_nocache, $_scope);\n\$_smarty_tpl->tpl_vars[$_attr[var]]->value$parameter[smarty_internal_index] = $_attr[value];";
} else {
// implement Smarty2's behaviour of variables assigned by reference
if ($compiler->template->smarty instanceof SmartyBC) {
$output = "<?php if (isset(\$_smarty_tpl->tpl_vars[$_attr[var]])) {\$_smarty_tpl->tpl_vars[$_attr[var]] = clone \$_smarty_tpl->tpl_vars[$_attr[var]];";
$output .= "\n\$_smarty_tpl->tpl_vars[$_attr[var]]->value = $_attr[value]; \$_smarty_tpl->tpl_vars[$_attr[var]]->nocache = $_nocache; \$_smarty_tpl->tpl_vars[$_attr[var]]->scope = $_scope;";
$output .= "\n} else \$_smarty_tpl->tpl_vars[$_attr[var]] = new Smarty_variable($_attr[value], $_nocache, $_scope);";
} else {
$output = "<?php \$_smarty_tpl->tpl_vars[$_attr[var]] = new Smarty_variable($_attr[value], $_nocache, $_scope);";
}
}
if ($_scope == Smarty::SCOPE_PARENT) {
$output .= "\nif (\$_smarty_tpl->parent != null) \$_smarty_tpl->parent->tpl_vars[$_attr[var]] = clone \$_smarty_tpl->tpl_vars[$_attr[var]];";
} elseif ($_scope == Smarty::SCOPE_ROOT || $_scope == Smarty::SCOPE_GLOBAL) {
$output .= "\n\$_ptr = \$_smarty_tpl->parent; while (\$_ptr != null) {\$_ptr->tpl_vars[$_attr[var]] = clone \$_smarty_tpl->tpl_vars[$_attr[var]]; \$_ptr = \$_ptr->parent; }";
}
if ($_scope == Smarty::SCOPE_GLOBAL) {
$output .= "\nSmarty::\$global_tpl_vars[$_attr[var]] = clone \$_smarty_tpl->tpl_vars[$_attr[var]];";
}
$output .= '?>';
return $output;
}
}
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