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aschwarz
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<?php
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/**
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* Smarty Internal Plugin Smarty Template Compiler Base
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* This file contains the basic classes and methods for compiling Smarty templates with lexer/parser
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*
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* @package Smarty
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* @subpackage Compiler
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* @author Uwe Tews
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*/
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/**
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* Class SmartyTemplateCompiler
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*
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* @package Smarty
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* @subpackage Compiler
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*/
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class Smarty_Internal_SmartyTemplateCompiler extends Smarty_Internal_TemplateCompilerBase
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{
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/**
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* Lexer class name
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*
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* @var string
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*/
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public $lexer_class;
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/**
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* Parser class name
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*
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* @var string
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*/
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public $parser_class;
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/**
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* array of vars which can be compiled in local scope
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*
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* @var array
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*/
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public $local_var = array();
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/**
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* array of callbacks called when the normal compile process of template is finished
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*
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* @var array
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*/
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public $postCompileCallbacks = array();
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/**
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* prefix code
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*
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* @var string
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*/
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public $prefixCompiledCode = '';
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/**
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* postfix code
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*
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* @var string
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*/
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public $postfixCompiledCode = '';
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/**
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* Initialize compiler
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*
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* @param string $lexer_class class name
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* @param string $parser_class class name
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* @param Smarty $smarty global instance
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*/
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public function __construct($lexer_class, $parser_class, Smarty $smarty)
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{
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parent::__construct($smarty);
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// get required plugins
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$this->lexer_class = $lexer_class;
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$this->parser_class = $parser_class;
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}
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/**
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* method to compile a Smarty template
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*
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* @param mixed $_content template source
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* @param bool $isTemplateSource
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*
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* @return bool true if compiling succeeded, false if it failed
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* @throws \SmartyCompilerException
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*/
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protected function doCompile($_content, $isTemplateSource = false)
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{
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/* here is where the compiling takes place. Smarty
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tags in the templates are replaces with PHP code,
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then written to compiled files. */
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// init the lexer/parser to compile the template
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$this->parser =
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new $this->parser_class(new $this->lexer_class(str_replace(array("\r\n", "\r"), "\n", $_content), $this),
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$this);
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if ($isTemplateSource && $this->template->caching) {
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$this->parser->insertPhpCode("<?php\n\$_smarty_tpl->compiled->nocache_hash = '{$this->nocache_hash}';\n?>\n");
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}
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if (function_exists('mb_internal_encoding') && ((int) ini_get('mbstring.func_overload')) & 2) {
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$mbEncoding = mb_internal_encoding();
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mb_internal_encoding('ASCII');
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} else {
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$mbEncoding = null;
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}
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if ($this->smarty->_parserdebug) {
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$this->parser->PrintTrace();
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$this->parser->lex->PrintTrace();
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}
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// get tokens from lexer and parse them
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while ($this->parser->lex->yylex()) {
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if ($this->smarty->_parserdebug) {
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echo "<pre>Line {$this->parser->lex->line} Parsing {$this->parser->yyTokenName[$this->parser->lex->token]} Token " .
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htmlentities($this->parser->lex->value) . "</pre>";
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}
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$this->parser->doParse($this->parser->lex->token, $this->parser->lex->value);
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}
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// finish parsing process
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$this->parser->doParse(0, 0);
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if ($mbEncoding) {
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mb_internal_encoding($mbEncoding);
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}
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// check for unclosed tags
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if (count($this->_tag_stack) > 0) {
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// get stacked info
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list($openTag, $_data) = array_pop($this->_tag_stack);
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$this->trigger_template_error("unclosed {$this->smarty->left_delimiter}" . $openTag .
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"{$this->smarty->right_delimiter} tag");
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}
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// call post compile callbacks
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foreach ($this->postCompileCallbacks as $cb) {
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$parameter = $cb;
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$parameter[0] = $this;
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call_user_func_array($cb[0], $parameter);
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}
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// return compiled code
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return $this->prefixCompiledCode . $this->parser->retvalue . $this->postfixCompiledCode;
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}
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/**
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* Register a post compile callback
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* - when the callback is called after template compiling the compiler object will be inserted as first parameter
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*
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* @param callback $callback
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* @param array $parameter optional parameter array
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* @param string $key optional key for callback
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* @param bool $replace if true replace existing keyed callback
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*/
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public function registerPostCompileCallback($callback, $parameter = array(), $key = null, $replace = false)
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{
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array_unshift($parameter, $callback);
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if (isset($key)) {
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if ($replace || !isset($this->postCompileCallbacks[$key])) {
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$this->postCompileCallbacks[$key] = $parameter;
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}
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} else {
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$this->postCompileCallbacks[] = $parameter;
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}
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}
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/**
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* Remove a post compile callback
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*
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* @param string $key callback key
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*/
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public function unregisterPostCompileCallback($key)
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{
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unset($this->postCompileCallbacks[$key]);
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}
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}
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