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/*
* Copyright (C) 2011, 2016 Apple Inc. All rights reserved.
* Copyright (C) 2025 Tetsuharu Ohzeki <tetsuharu.ohzeki@gmail.com>.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "YarrSyntaxChecker.h"
#include "YarrFlags.h"
#include "YarrParser.h"
namespace JSC { namespace Yarr {
class SyntaxChecker {
public:
void assertionBOL() { }
void assertionEOL() { }
void assertionWordBoundary(bool) { }
void atomPatternCharacter(char32_t) { }
void atomBuiltInCharacterClass(BuiltInCharacterClassID, bool) { }
void atomCharacterClassBegin(bool = false) { }
void atomCharacterClassAtom(UChar) { }
void atomCharacterClassRange(UChar, UChar) { }
void atomCharacterClassBuiltIn(BuiltInCharacterClassID, bool) { }
void atomClassStringDisjunction(Vector<Vector<char32_t>>&) { }
void atomCharacterClassSetOp(CharacterClassSetOp) { }
void atomCharacterClassPushNested() { }
void atomCharacterClassPopNested() { }
void atomCharacterClassEnd() { }
void atomParenthesesSubpatternBegin(bool = true, std::optional<String> = std::nullopt) { }
void atomParentheticalAssertionBegin(bool, MatchDirection) { }
void atomParentheticalModifierBegin(OptionSet<Flags>, OptionSet<Flags>) { }
void atomParenthesesEnd() { }
void atomBackReference(unsigned) { }
void atomNamedBackReference(const String&) { }
void atomNamedForwardReference(const String&) { }
void quantifyAtom(unsigned, unsigned, bool) { }
void disjunction(CreateDisjunctionPurpose) { }
void resetForReparsing() { }
constexpr static bool abortedDueToError() { return false; }
constexpr static ErrorCode abortErrorCode() { return ErrorCode::NoError; }
};
static_assert(YarrSyntaxCheckable<SyntaxChecker>);
ErrorCode checkSyntax(StringView pattern, StringView flags)
{
SyntaxChecker syntaxChecker;
auto parsedFlags = parseFlags(flags);
if (!parsedFlags)
return ErrorCode::InvalidRegularExpressionFlags;
return parse(syntaxChecker, pattern, compileMode(parsedFlags));
}
}} // JSC::Yarr
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