This class takes generated tokens from the Lexer sequentially
and produces an Abstract Syntax Tree (AST) out of it
The AST is an object-tree containing Node-instances
with parent/child relations
This AST is passed to the compiler to generate PHTML out of it
Usage example:
use Tale\Jade\Parser;
$parser = new Parser();
echo $parser->parse($jadeInput);
Prints a human-readable dump of the parsed nodes
public function convert($inputPath)
{
$this->prependOptions(['paths' => []]);
$parser = new Parser(file_get_contents($inputPath), ['filename' => $inputPath, 'includes' => $this->getOption('paths')]);
$compiler = new Compiler(!$this->getManager()->getOption('minify'));
return $compiler->compile($parser->parse());
}
/**
* Loads an imported file and merges the nodes with the current tree.
*
* @param Node $node the node to import
*
* @return $this
* @throws Exception
*/
protected function handleImport(Node $node)
{
$path = $node->path;
if ($node->importType === 'include') {
$ext = pathinfo($path, \PATHINFO_EXTENSION);
if (empty($ext) && $node->filter && in_array($node->filter, $this->options['filterMap'], true)) {
//Get our extension from our filter map
$ext = array_search($node->filter, $this->options['filterMap']);
}
if (!empty($ext) && (!in_array(".{$ext}", $this->options['extensions']) || $node->filter)) {
if (!$node->filter && isset($this->options['filterMap'][$ext])) {
$node->filter = $this->options['filterMap'][$ext];
}
$fullPath = $this->resolvePath($path, ".{$ext}");
if (!$fullPath) {
$this->throwException("File {$path} not found in " . implode(', ', $this->options['paths']) . ", Include path: " . get_include_path(), $node);
}
//remove annoying \r and \0 chars completely
$text = trim(str_replace(["\r", ""], '', file_get_contents($fullPath)));
$newNode = new Node('text');
$newNode->value = $this->interpolate($text);
if ($node->filter) {
$filter = new Node('filter');
$filter->name = $node->filter;
$filter->append($newNode);
$newNode = $filter;
}
//Notice that include might have an expansion before
//We'd need to resolve that before we remove the import \Tale\Jade\Parser\Node alltogether
if (isset($node->expands)) {
$newNode->expands = $node->expands;
unset($node->expands);
}
$node->parent->insertBefore($node, $newNode);
$node->parent->remove($node);
return $this;
}
}
$fullPath = $this->resolvePath($path);
if (!$fullPath) {
$this->throwException("File {$path} wasnt found in " . implode(', ', $this->options['paths']) . ", Include path: " . get_include_path(), $node);
}
$importedNode = $this->parser->parse(file_get_contents($fullPath));
$this->files[] = $fullPath;
$this->handleImports($importedNode);
array_pop($this->files);
//Notice that include might have an expansion before
//We'd need to resolve that before we remove the import \Tale\Jade\Parser\Node alltogether
if (isset($node->expands)) {
$importedNode->expands = $node->expands;
unset($node->expands);
}
$node->parent->insertBefore($node, $importedNode);
$node->parent->remove($node);
return $this;
}
exit;
case 'lex':
$lexer = new Lexer();
$result = null;
try {
ob_start();
$lexer->dump($jade);
$result = ob_get_clean();
} catch (\Exception $e) {
echo json_encode(['success' => false, 'message' => "\n" . get_class($e) . "\n\n" . $e->getMessage()]);
exit;
}
echo json_encode(['success' => true, 'output' => $result]);
exit;
case 'parse':
$parser = new Parser();
$result = null;
try {
$result = $parser->parse($jade);
} catch (\Exception $e) {
echo json_encode(['success' => false, 'message' => "\n" . get_class($e) . "\n\n" . $e->getMessage()]);
exit;
}
echo json_encode(['success' => true, 'output' => (string) $result]);
exit;
default:
echo json_encode(['success' => false, 'message' => 'Invalid mode selected']);
}
}
$view = isset($_GET['view']) ? $_GET['view'] : 'index';
$example = isset($_GET['example']) ? $_GET['example'] : 'index';
