/**
* @inheritdoc
*/
public function parse(array $tokens)
{
$ast = new AbstractSyntaxTree();
/** @var Token $token */
foreach ($tokens as $token) {
switch ($token->getType()) {
case TokenTypes::T_EXPRESSION:
$ast->getCurrentNode()->addChild(new ExpressionNode($token->getValue()));
break;
case TokenTypes::T_DIRECTIVE_OPEN:
if (!$ast->getCurrentNode()->isRoot()) {
$this->throwImproperlyNestedNodeException($token);
}
$childNode = new DirectiveNode();
$ast->getCurrentNode()->addChild($childNode);
$ast->setCurrentNode($childNode);
break;
case TokenTypes::T_DIRECTIVE_CLOSE:
if (!$ast->getCurrentNode()->isDirective()) {
$this->throwUnopenedDelimiterException($token);
}
$ast->setCurrentNode($ast->getCurrentNode()->getParent());
break;
case TokenTypes::T_DIRECTIVE_NAME:
$ast->getCurrentNode()->addChild(new DirectiveNameNode($token->getValue()));
break;
case TokenTypes::T_SANITIZED_TAG_OPEN:
if (!$ast->getCurrentNode()->isRoot()) {
$this->throwImproperlyNestedNodeException($token);
}
$childNode = new SanitizedTagNode();
$ast->getCurrentNode()->addChild($childNode);
$ast->setCurrentNode($childNode);
break;
case TokenTypes::T_SANITIZED_TAG_CLOSE:
if (!$ast->getCurrentNode()->isSanitizedTag()) {
$this->throwUnopenedDelimiterException($token);
}
$ast->setCurrentNode($ast->getCurrentNode()->getParent());
break;
case TokenTypes::T_UNSANITIZED_TAG_OPEN:
if (!$ast->getCurrentNode()->isRoot()) {
$this->throwImproperlyNestedNodeException($token);
}
$childNode = new UnsanitizedTagNode();
$ast->getCurrentNode()->addChild($childNode);
$ast->setCurrentNode($childNode);
break;
case TokenTypes::T_UNSANITIZED_TAG_CLOSE:
if (!$ast->getCurrentNode()->isUnsanitizedTag()) {
$this->throwUnopenedDelimiterException($token);
}
$ast->setCurrentNode($ast->getCurrentNode()->getParent());
break;
case TokenTypes::T_COMMENT_OPEN:
if (!$ast->getCurrentNode()->isRoot()) {
$this->throwImproperlyNestedNodeException($token);
}
$childNode = new CommentNode();
$ast->getCurrentNode()->addChild($childNode);
$ast->setCurrentNode($childNode);
break;
case TokenTypes::T_COMMENT_CLOSE:
if (!$ast->getCurrentNode()->isComment()) {
$this->throwUnopenedDelimiterException($token);
}
$ast->setCurrentNode($ast->getCurrentNode()->getParent());
break;
case TokenTypes::T_PHP_TAG_OPEN:
$ast->getCurrentNode()->addChild(new ExpressionNode($token->getValue()));
break;
case TokenTypes::T_PHP_TAG_CLOSE:
$ast->getCurrentNode()->addChild(new ExpressionNode($token->getValue()));
break;
default:
throw new RuntimeException(sprintf('Unknown token type "%s" with value "%s" near line %d', $token->getType(), $token->getValue(), $token->getLine()));
}
}
if (!$ast->getCurrentNode()->isRoot()) {
throw new RuntimeException(sprintf("Expected close delimiter, found %s", $ast->getCurrentNode()->getValue()));
}
return $ast;
}
