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Refactor expression parser

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This commit is contained in:
Fabien Potencier
2024-10-09 09:12:24 +02:00
parent 818a07b591
commit 2cdca8cbeb
1 changed files with 13 additions and 9 deletions
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src/ExpressionParser.php
+13 -9
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@@ -341,6 +341,14 @@ class ExpressionParser
$node = $this->parseStringExpression();
break;
case Token::PUNCTUATION_TYPE:
$node = match ($token->getValue()) {
'[' => $this->parseSequenceExpression(),
'{' => $this->parseMappingExpression(),
default => throw new SyntaxError(\sprintf('Unexpected token "%s" of value "%s".', Token::typeToEnglish($token->getType()), $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext()),
};
break;
case Token::OPERATOR_TYPE:
if (preg_match(Lexer::REGEX_NAME, $token->getValue(), $matches) && $matches[0] == $token->getValue()) {
// in this context, string operators are variable names
@@ -362,17 +370,13 @@ class ExpressionParser
break;
}
if ('=' === $token->getValue() && ('==' === $this->parser->getStream()->look(-1)->getValue() || '!=' === $this->parser->getStream()->look(-1)->getValue())) {
throw new SyntaxError(\sprintf('Unexpected operator of value "%s". Did you try to use "===" or "!==" for strict comparison? Use "is same as(value)" instead.', $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext());
}
// no break
default:
if ($token->test(Token::PUNCTUATION_TYPE, '[')) {
$node = $this->parseSequenceExpression();
} elseif ($token->test(Token::PUNCTUATION_TYPE, '{')) {
$node = $this->parseMappingExpression();
} elseif ($token->test(Token::OPERATOR_TYPE, '=') && ('==' === $this->parser->getStream()->look(-1)->getValue() || '!=' === $this->parser->getStream()->look(-1)->getValue())) {
throw new SyntaxError(\sprintf('Unexpected operator of value "%s". Did you try to use "===" or "!==" for strict comparison? Use "is same as(value)" instead.', $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext());
} else {
throw new SyntaxError(\sprintf('Unexpected token "%s" of value "%s".', Token::typeToEnglish($token->getType()), $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext());
}
throw new SyntaxError(\sprintf('Unexpected token "%s" of value "%s".', Token::typeToEnglish($token->getType()), $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext());
}
return $this->parsePostfixExpression($node);