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Minor cleanups to emulative lexer

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Be consistent about version numbers. We'll only emulate until
beta1 of a release, as that's the feature freeze release.
This commit is contained in:
nikic 2014-03-26 23:50:15 +01:00
parent 1cb6e1407c
commit b3332184cf
1 changed files with 19 additions and 14 deletions
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33
lib/PhpParser/Lexer/Emulative.php
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@ -16,15 +16,19 @@ class Emulative extends \PhpParser\Lexer
const T_POW = 1002;
const T_POW_EQUAL = 1003;
const PHP_5_6 = '5.6.0beta1';
const PHP_5_5 = '5.5.0beta1';
const PHP_5_4 = '5.4.0beta1';
public function __construct() {
parent::__construct();
$newKeywordsPerVersion = array(
'5.5.0-dev' => array(
self::PHP_5_5 => array(
'finally' => Parser::T_FINALLY,
'yield' => Parser::T_YIELD,
),
'5.4.0-dev' => array(
self::PHP_5_4 => array(
'callable' => Parser::T_CALLABLE,
'insteadof' => Parser::T_INSTEADOF,
'trait' => Parser::T_TRAIT,
@ -41,7 +45,7 @@ class Emulative extends \PhpParser\Lexer
$this->newKeywords += $newKeywords;
}
if (version_compare(PHP_VERSION, '5.6.0beta1', '<')) {
if (version_compare(PHP_VERSION, self::PHP_5_6, '<')) {
$this->tokenMap[self::T_ELLIPSIS] = Parser::T_ELLIPSIS;
$this->tokenMap[self::T_POW] = Parser::T_POW;
$this->tokenMap[self::T_POW_EQUAL] = Parser::T_POW_EQUAL;
@ -51,12 +55,9 @@ class Emulative extends \PhpParser\Lexer
public function startLexing($code) {
$this->inObjectAccess = false;
// on PHP 5.6 don't do anything
if (version_compare(PHP_VERSION, '5.6.0beta1', '>=')) {
parent::startLexing($code);
} else {
$code = $this->preprocessCode($code);
parent::startLexing($code);
$preprocessedCode = $this->preprocessCode($code);
parent::startLexing($preprocessedCode);
if ($preprocessedCode !== $code) {
$this->postprocessTokens();
}
}
@ -66,20 +67,24 @@ class Emulative extends \PhpParser\Lexer
* ~LABEL~ is never valid PHP code, that's why we can (to some degree) safely
* use it here.
* Later when preprocessing the tokens these sequences will either be replaced
* by real tokens or replaced with their original content (e.g. if they occured
* by real tokens or replaced with their original content (e.g. if they occurred
* inside a string, i.e. a place where they don't have a special meaning).
*/
protected function preprocessCode($code) {
if (version_compare(PHP_VERSION, self::PHP_5_6, '>=')) {
return $code;
}
$code = str_replace('...', '~__EMU__ELLIPSIS__~', $code);
$code = preg_replace('((?<!/)\*\*=)', '~__EMU__POWEQUAL__~', $code);
$code = preg_replace('((?<!/)\*\*(?!/))', '~__EMU__POW__~', $code);
if (version_compare(PHP_VERSION, '5.4.0beta1', '<')) {
// binary notation (0b010101101001...)
$code = preg_replace('(\b0b[01]+\b)', '~__EMU__BINARY__$0__~', $code);
if (version_compare(PHP_VERSION, self::PHP_5_4, '>=')) {
return $code;
}
return $code;
// binary notation (0b010101101001...)
return preg_replace('(\b0b[01]+\b)', '~__EMU__BINARY__$0__~', $code);
}
/*