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<?php |
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namespace suda\application\template\compiler; |
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use Exception; |
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use function preg_replace_callback; |
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use function str_replace; |
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/** |
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* 可执行命令表达式 |
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* |
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*/ |
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class Compiler |
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{ |
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/** |
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* 定义的标签 |
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* |
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* @var array |
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*/ |
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protected $tag = [ |
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'raw' => ['{{!', '}}', '<?php echo $code; ?>'], |
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'comment' => ['{--', '--}', '<?php /* $code */ ?>'], |
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]; |
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/** |
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* 编译的TAG |
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* |
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* @var Tag[] |
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*/ |
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protected $tags=[]; |
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/** |
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* 命令对象 |
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* |
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* @var CommandInterface[] |
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*/ |
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protected $commands=[]; |
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public function init() |
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{ |
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$this->registerCommand(new Command); |
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foreach ($this->tag as $name => $value) { |
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$this->registerTag(new Tag($name, $value[0], $value[1], $value[2])); |
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} |
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} |
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/** |
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* 注册命令 |
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* |
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* @param CommandInterface $command |
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* @return void |
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*/ |
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public function registerCommand(CommandInterface $command) |
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{ |
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$this->commands[] = $command; |
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} |
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/** |
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* 注册标记 |
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* |
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* @param Tag $tag |
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* @return void |
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*/ |
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public function registerTag(Tag $tag) |
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{ |
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$this->tags[$tag->getName()] =$tag; |
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} |
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/** |
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* 编译 |
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* |
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* @param string $text 代码文本 |
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* @param array $tagConfig 标签配置 |
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* @return string |
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* @throws Exception |
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*/ |
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public function compileText(string $text, array $tagConfig = []):string |
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{ |
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$this->applyTagConfig($tagConfig); |
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$result = ''; |
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foreach (token_get_all($text) as $token) { |
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if (is_array($token)) { |
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list($tag, $content) = $token; |
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// 所有将要编译的文本 |
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// 跳过各种的PHP |
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if ($tag == T_INLINE_HTML) { |
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$content=$this->proccesTags($content); |
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$content=$this->processCommands($content); |
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} |
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$result .= $content; |
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} else { |
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$result .= $token; |
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} |
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} |
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return $result; |
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} |
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protected function applyTagConfig(array $config) |
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{ |
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foreach ($config as $name => $tagConfig) { |
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if (array_key_exists($name, $this->tags)) { |
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$this->tags[$name]->setConfig($tagConfig); |
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} |
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} |
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} |
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protected function proccesTags(string $text):string |
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{ |
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foreach ($this->tags as $tag) { |
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$pregExp = sprintf('/(!)?%s\s*(.+?)\s*%s/', preg_quote($tag->getOpen()), preg_quote($tag->getClose())); |
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$text = preg_replace_callback($pregExp, function ($match) use ($tag) { |
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if ($match[1] === '!') { |
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return substr($match[0], 1); |
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} else { |
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return $tag->compile($match[2]); |
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} |
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}, $text); |
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} |
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return $text; |
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} |
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/** |
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* @param string $text |
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* @return string |
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* @throws Exception |
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*/ |
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protected function processCommands(string $text):string |
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{ |
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$pregExp ='/\B\@(\!)?([\w\x{4e00}-\x{9aff}]+)(\s*)(\( ( (?>[^()]+) | (?4) )* \) )? /ux'; |
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$code = preg_replace_callback($pregExp, [$this,'doMatchCommand'], $text); |
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$error = preg_last_error(); |
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if ($error !== PREG_NO_ERROR) { |
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throw new Exception($error); |
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} |
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return $code; |
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} |
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protected function doMatchCommand($match) |
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{ |
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if (count($match) >= 5) { |
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list($input, $ignore, $name, $space, $params) = $match; |
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} else { |
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list($input, $ignore, $name, $space) = $match; |
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$params = ''; |
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} |
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if ($ignore ==='!') { |
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return str_replace('@!', '@', $input); |
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} else { |
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foreach ($this->commands as $command) { |
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if ($command->has($name)) { |
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$code = $command->parse($name, $params); |
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return empty($params) ? $code : $code.$space; |
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} |
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} |
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return $input; |
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} |
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} |
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} |
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