class TokenStream in Zircon Profile 8
Same name and namespace in other branches
- 8.0 vendor/symfony/css-selector/Parser/TokenStream.php \Symfony\Component\CssSelector\Parser\TokenStream
CSS selector token stream.
This component is a port of the Python cssselect library, which is copyright Ian Bicking, @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
Hierarchy
- class \Symfony\Component\CssSelector\Parser\TokenStream
Expanded class hierarchy of TokenStream
See also
https://github.com/SimonSapin/cssselect.
11 files declare their use of TokenStream
- AbstractHandlerTest.php in vendor/
symfony/ css-selector/ Tests/ Parser/ Handler/ AbstractHandlerTest.php - CommentHandler.php in vendor/
symfony/ css-selector/ Parser/ Handler/ CommentHandler.php - CommentHandlerTest.php in vendor/
symfony/ css-selector/ Tests/ Parser/ Handler/ CommentHandlerTest.php - HandlerInterface.php in vendor/
symfony/ css-selector/ Parser/ Handler/ HandlerInterface.php - HashHandler.php in vendor/
symfony/ css-selector/ Parser/ Handler/ HashHandler.php
File
- vendor/
symfony/ css-selector/ Parser/ TokenStream.php, line 25
Namespace
Symfony\Component\CssSelector\ParserView source
class TokenStream {
/**
* @var Token[]
*/
private $tokens = array();
/**
* @var bool
*/
private $frozen = false;
/**
* @var Token[]
*/
private $used = array();
/**
* @var int
*/
private $cursor = 0;
/**
* @var Token|null
*/
private $peeked = null;
/**
* @var bool
*/
private $peeking = false;
/**
* Pushes a token.
*
* @param Token $token
*
* @return TokenStream
*/
public function push(Token $token) {
$this->tokens[] = $token;
return $this;
}
/**
* Freezes stream.
*
* @return TokenStream
*/
public function freeze() {
$this->frozen = true;
return $this;
}
/**
* Returns next token.
*
* @throws InternalErrorException If there is no more token
*
* @return Token
*/
public function getNext() {
if ($this->peeking) {
$this->peeking = false;
$this->used[] = $this->peeked;
return $this->peeked;
}
if (!isset($this->tokens[$this->cursor])) {
throw new InternalErrorException('Unexpected token stream end.');
}
return $this->tokens[$this->cursor++];
}
/**
* Returns peeked token.
*
* @return Token
*/
public function getPeek() {
if (!$this->peeking) {
$this->peeked = $this
->getNext();
$this->peeking = true;
}
return $this->peeked;
}
/**
* Returns used tokens.
*
* @return Token[]
*/
public function getUsed() {
return $this->used;
}
/**
* Returns nex identifier token.
*
* @throws SyntaxErrorException If next token is not an identifier
*
* @return string The identifier token value
*/
public function getNextIdentifier() {
$next = $this
->getNext();
if (!$next
->isIdentifier()) {
throw SyntaxErrorException::unexpectedToken('identifier', $next);
}
return $next
->getValue();
}
/**
* Returns nex identifier or star delimiter token.
*
* @throws SyntaxErrorException If next token is not an identifier or a star delimiter
*
* @return null|string The identifier token value or null if star found
*/
public function getNextIdentifierOrStar() {
$next = $this
->getNext();
if ($next
->isIdentifier()) {
return $next
->getValue();
}
if ($next
->isDelimiter(array(
'*',
))) {
return;
}
throw SyntaxErrorException::unexpectedToken('identifier or "*"', $next);
}
/**
* Skips next whitespace if any.
*/
public function skipWhitespace() {
$peek = $this
->getPeek();
if ($peek
->isWhitespace()) {
$this
->getNext();
}
}
}
Members
Name | Modifiers | Type | Description | Overrides |
---|---|---|---|---|
TokenStream:: |
private | property | ||
TokenStream:: |
private | property | ||
TokenStream:: |
private | property | ||
TokenStream:: |
private | property | ||
TokenStream:: |
private | property | ||
TokenStream:: |
private | property | ||
TokenStream:: |
public | function | Freezes stream. | |
TokenStream:: |
public | function | Returns next token. | |
TokenStream:: |
public | function | Returns nex identifier token. | |
TokenStream:: |
public | function | Returns nex identifier or star delimiter token. | |
TokenStream:: |
public | function | Returns peeked token. | |
TokenStream:: |
public | function | Returns used tokens. | |
TokenStream:: |
public | function | Pushes a token. | |
TokenStream:: |
public | function | Skips next whitespace if any. |