xarxaprod-wp-theme/vendor/mck89/peast/lib/Peast/Syntax/JSX/Scanner.php

124 lines
3.4 KiB
PHP

<?php
/**
* This file is part of the Peast package
*
* (c) Marco Marchiò <marco.mm89@gmail.com>
*
* For the full copyright and license information refer to the LICENSE file
* distributed with this source code
*/
namespace Peast\Syntax\JSX;
use Peast\Syntax\Token;
/**
* JSX scanner trait
*
* @author Marco Marchiò <marco.mm89@gmail.com>
*/
trait Scanner
{
/**
* Tries to reconsume the current token as a jsx text if possible
*
* @return Token|null
*/
public function reconsumeCurrentTokenAsJSXText()
{
//Current and next tokens must be reset and the open brackets count must be correct
//like they were never scanned
foreach (array($this->currentToken, $this->nextToken) as $token) {
if ($token && isset($this->brackets[$token->value])) {
if ($refBracket = $this->brackets[$token->value]) {
$this->openBrackets[$refBracket]++;
} else {
$this->openBrackets[$token->value]--;
}
}
}
$this->nextToken = null;
$this->currentToken = null;
$startPosition = $this->getPosition();
$this->setScanPosition($startPosition);
$result = $this->consumeUntil(array("{", "<"), false, false);
if ($result) {
$this->currentToken = new Token(Token::TYPE_JSX_TEXT, $result[0]);
$this->currentToken->location->start = $startPosition;
$this->currentToken->location->end = $this->getPosition(true);
}
return $this->currentToken;
}
/**
* Reconsumes the current token in jsx mode
*
* @return Token|null
*/
public function reconsumeCurrentTokenInJSXMode()
{
$this->jsx = true;
$this->nextToken = null;
$this->currentToken = null;
$startPosition = $this->getPosition();
$this->setScanPosition($startPosition);
$token = $this->getToken();
$this->jsx = false;
return $token;
}
/**
* String scanning method in jsx mode
*
* @return Token|null
*/
public function scanJSXString()
{
return $this->scanString(false);
}
/**
* String punctuator method in jsx mode
*
* @return Token|null
*/
public function scanJSXPunctuator()
{
//The ">" character in jsx mode must be emitted in its own token
//without matching longer sequences like ">>"
$char = $this->charAt();
if ($char === ">") {
$this->index++;
$this->column++;
return new Token(Token::TYPE_PUNCTUATOR, $char);
}
return $this->scanPunctuator();
}
/**
* Identifier scanning method in jsx mode
*
* @return Token|null
*/
public function scanJSXIdentifier()
{
$buffer = "";
$char = $this->charAt();
if ($char !== null && $this->isIdentifierChar($char)) {
do {
$buffer .= $char;
$this->index++;
$this->column++;
$char = $this->charAt();
} while (
$char !== null &&
($this->isIdentifierChar($char, false) || $char === "-")
);
}
return $buffer === "" ? null : new Token(Token::TYPE_JSX_IDENTIFIER, $buffer);
}
}