/**
* @return bool 若标签到达关闭，返回true，否则false
*/
public function parseTagBreak(TokenStream $tokenStream)
{
$endTagName = 'end' . $this->getTagName();
if ($tokenStream->test(Token::TYPE_NAME, $endTagName)) {
$tokenStream->next();
$tokenStream->expect(Token::TYPE_TAG_END);
$this->isClosed = true;
return true;
} else {
return false;
}
}
public function parseTagBreak(TokenStream $tokenStream)
{
if ($tokenStream->test(Token::TYPE_NAME, 'elseif')) {
$token = $tokenStream->next();
//XXX fix to check elseif after else
$this->elseIfConditionNodeList[] = $this->getExpressionParser()->parse($tokenStream);
$tokenStream->expect(Token::TYPE_TAG_END);
$this->elseIfBodyNodesList[] = $this->rootParser->parseBody($this);
return true;
}
if ($tokenStream->test(Token::TYPE_NAME, 'else')) {
$tokenStream->next();
$tokenStream->expect(Token::TYPE_TAG_END);
$this->elseBodyNode = $this->rootParser->parseBody($this);
return true;
}
return parent::parseTagBreak($tokenStream);
}
public function parsePrimary()
{
//unary
if ($this->inUnaryOperator($this->tokenStream->lookNext())) {
return $this->parseUnary();
}
//bracket
if ($this->tokenStream->test(Token::TYPE_PUNCTUATION, '(')) {
return $this->parseBracket();
}
//array
if ($this->tokenStream->test(Token::TYPE_PUNCTUATION, '[') || $this->tokenStream->test(Token::TYPE_PUNCTUATION, '{')) {
return $this->parseArray();
}
if ($this->tokenStream->test(Token::TYPE_NAME)) {
//constant val eg: null
if (in_array(strtolower($this->tokenStream->lookNext()->getValue()), ['null', 'true', 'false'])) {
return new ConstantNode($this->tokenStream->next());
} else {
//function eg: test()
return $this->parseFunction();
}
}
//attribute eg: $x | $x.varName | $x.func(1,2) | $x["y"]
if ($this->tokenStream->test(Token::TYPE_VARIABLE)) {
return $this->parseAttributeOrMethod();
}
$token = $this->tokenStream->next();
switch ($token->getType()) {
case Token::TYPE_NUMBER:
case Token::TYPE_STRING:
return new ConstantNode($token);
default:
throw new ParseException($this->tokenStream->getFileName(), 'unexpected ' . $token->getValue(), $token->line, $token->col);
}
}
public function parse(TokenStream $tokenStream)
{
while (!$tokenStream->isEOF() && $tokenStream->lookNext()->getType() != Token::TYPE_TAG_END) {
$paramNameToken = $tokenStream->expect(Token::TYPE_NAME);
$tokenStream->expect(Token::TYPE_OPERATOR, '=');
$expressionNode = $this->getExpressionParser()->parse($tokenStream);
$this->attributes[$paramNameToken->getValue()] = $expressionNode;
}
$tokenStream->expect(Token::TYPE_TAG_END);
foreach ($this->getRequiredAttributes() as $attributeName) {
if (!isset($this->attributes[$attributeName])) {
throw new ParseException($tokenStream->getFileName(), sprintf('%s require %s attribute', $this->getTagName(), $attributeName), $this->tagToken->line, $this->tagToken->col);
}
}
if ($this->hasCloseTag()) {
$this->bodyNode = $this->rootParser->parseBody($this);
}
return new CommonTagNode($this);
}
/**
* @param $tokenStream TokenStream
* @return AbstractNode
*/
public function parse(TokenStream $tokenStream)
{
$this->tokenStream = $tokenStream;
$bodyNode = $this->parseBody(null);
return new RootNode($tokenStream->getFileName(), $bodyNode->childNodes);
}
