Latte\Compiler::compile PHP Method

    public function compile(array $tokens, $className)
    {
        $this->tokens = $tokens;
        $output = '';
        $this->output =& $output;
        $this->inHead = TRUE;
        $this->htmlNode = $this->macroNode = $this->context = NULL;
        $this->placeholders = $this->properties = [];
        $this->methods = ['main' => NULL, 'prepare' => NULL];
        $macroHandlers = new \SplObjectStorage();
        array_map([$macroHandlers, 'attach'], call_user_func_array('array_merge', $this->macros));
        foreach ($macroHandlers as $handler) {
            $handler->initialize($this);
        }
        foreach ($tokens as $this->position => $token) {
            if ($this->inHead && !($token->type === $token::COMMENT || $token->type === $token::MACRO_TAG && isset($this->flags[$token->name]) && $this->flags[$token->name] & IMacro::ALLOWED_IN_HEAD || $token->type === $token::TEXT && trim($token->text) === '')) {
                $this->inHead = FALSE;
            }
            $this->{"process{$token->type}"}($token);
        }
        while ($this->htmlNode) {
            if (!empty($this->htmlNode->macroAttrs)) {
                throw new CompileException('Missing ' . self::printEndTag($this->htmlNode));
            }
            $this->htmlNode = $this->htmlNode->parentNode;
        }
        while ($this->macroNode) {
            if (~$this->flags[$this->macroNode->name] & IMacro::AUTO_CLOSE) {
                throw new CompileException('Missing ' . self::printEndTag($this->macroNode));
            }
            $this->closeMacro($this->macroNode->name);
        }
        $prepare = $epilogs = '';
        foreach ($macroHandlers as $handler) {
            $res = $handler->finalize();
            $prepare .= empty($res[0]) ? '' : "<?php {$res['0']} ?>";
            $epilogs = (empty($res[1]) ? '' : "<?php {$res['1']} ?>") . $epilogs;
        }
        $this->addMethod('main', $this->expandTokens("extract(\$this->params);?>\n{$output}{$epilogs}<?php return get_defined_vars();"));
        if ($prepare) {
            $this->addMethod('prepare', "extract(\$this->params);?>{$prepare}<?php");
        }
        if ($this->contentType !== self::CONTENT_HTML) {
            $this->addProperty('contentType', $this->contentType);
        }
        foreach ($this->properties as $name => $value) {
            $members[] = "\tpublic \${$name} = " . PhpHelpers::dump($value) . ';';
        }
        foreach (array_filter($this->methods) as $name => $method) {
            $members[] = "\n\tfunction {$name}({$method['arguments']})\n\t{\n" . ($method['body'] ? "\t\t{$method['body']}\n" : '') . "\t}";
        }
        return "<?php\n" . "use Latte\\Runtime as LR;\n\n" . "class {$className} extends Latte\\Runtime\\Template\n{\n" . implode("\n\n", $members) . "\n\n}\n";
    }