/**
* @return Token The next token
* @throws Exceptions\SyntaxException
*/
private function parseToken()
{
do {
$done = true;
$token = $this->stream->next();
$type = $token->getType();
$value = $token->getValue();
switch ($type) {
case Token::STRING:
case Token::LITERAL:
$this->operandStack->push(new DataNode($value));
break;
case Token::IDENTIFIER:
$this->parseIdentifier($value);
break;
case Token::VARIABLE:
$this->parseVariable($value);
break;
case Token::PUNCTUATION:
switch ($value) {
case '(':
$this->parseExpression(false);
break;
case '[':
$this->parseArray();
break;
default:
$type = $token->getTypeString();
$line = $token->getLine();
throw new SyntaxException("Unexpected {$type} ({$value}) token", $line);
}
break;
default:
$this->stream->expectCurrent(Token::OPERATOR, [$this->unaryPrefixOperators, 'isOperator']);
$this->pushOperator($this->unaryPrefixOperators->getOperator($value));
$done = false;
break;
}
} while (!$done);
return $this->parsePostfixOperator();
}
public function parseBlock(Stream $stream, $endTags, $type = Token::TAG_START)
{
++$this->level;
$root = new RootNode();
$token = $stream->next();
while (!$token->test($type, $endTags)) {
$token = $this->parseToken($token, $stream, $root);
}
--$this->level;
return $root;
}
