| /* |
| * Copyright (C) 1999-2000 Harri Porten (porten@kde.org) |
| * Copyright (C) 2003-2019 Apple Inc. All Rights Reserved. |
| * Copyright (C) 2009 Torch Mobile, Inc. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| * |
| */ |
| |
| #include "config.h" |
| #include "RegExpConstructor.h" |
| |
| #include "Error.h" |
| #include "GetterSetter.h" |
| #include "JSCInlines.h" |
| #include "RegExpGlobalDataInlines.h" |
| #include "RegExpPrototype.h" |
| #include "YarrFlags.h" |
| |
| namespace JSC { |
| |
| static EncodedJSValue regExpConstructorInput(JSGlobalObject*, EncodedJSValue, PropertyName); |
| static EncodedJSValue regExpConstructorMultiline(JSGlobalObject*, EncodedJSValue, PropertyName); |
| static EncodedJSValue regExpConstructorLastMatch(JSGlobalObject*, EncodedJSValue, PropertyName); |
| static EncodedJSValue regExpConstructorLastParen(JSGlobalObject*, EncodedJSValue, PropertyName); |
| static EncodedJSValue regExpConstructorLeftContext(JSGlobalObject*, EncodedJSValue, PropertyName); |
| static EncodedJSValue regExpConstructorRightContext(JSGlobalObject*, EncodedJSValue, PropertyName); |
| template<int N> |
| static EncodedJSValue regExpConstructorDollar(JSGlobalObject*, EncodedJSValue, PropertyName); |
| |
| static bool setRegExpConstructorInput(JSGlobalObject*, EncodedJSValue, EncodedJSValue); |
| static bool setRegExpConstructorMultiline(JSGlobalObject*, EncodedJSValue, EncodedJSValue); |
| |
| } // namespace JSC |
| |
| #include "RegExpConstructor.lut.h" |
| |
| namespace JSC { |
| |
| const ClassInfo RegExpConstructor::s_info = { "Function", &InternalFunction::s_info, ®ExpConstructorTable, nullptr, CREATE_METHOD_TABLE(RegExpConstructor) }; |
| |
| /* Source for RegExpConstructor.lut.h |
| @begin regExpConstructorTable |
| input regExpConstructorInput None |
| $_ regExpConstructorInput DontEnum |
| multiline regExpConstructorMultiline None |
| $* regExpConstructorMultiline DontEnum |
| lastMatch regExpConstructorLastMatch DontDelete|ReadOnly |
| $& regExpConstructorLastMatch DontDelete|ReadOnly|DontEnum |
| lastParen regExpConstructorLastParen DontDelete|ReadOnly |
| $+ regExpConstructorLastParen DontDelete|ReadOnly|DontEnum |
| leftContext regExpConstructorLeftContext DontDelete|ReadOnly |
| $` regExpConstructorLeftContext DontDelete|ReadOnly|DontEnum |
| rightContext regExpConstructorRightContext DontDelete|ReadOnly |
| $' regExpConstructorRightContext DontDelete|ReadOnly|DontEnum |
| $1 regExpConstructorDollar<1> DontDelete|ReadOnly |
| $2 regExpConstructorDollar<2> DontDelete|ReadOnly |
| $3 regExpConstructorDollar<3> DontDelete|ReadOnly |
| $4 regExpConstructorDollar<4> DontDelete|ReadOnly |
| $5 regExpConstructorDollar<5> DontDelete|ReadOnly |
| $6 regExpConstructorDollar<6> DontDelete|ReadOnly |
| $7 regExpConstructorDollar<7> DontDelete|ReadOnly |
| $8 regExpConstructorDollar<8> DontDelete|ReadOnly |
| $9 regExpConstructorDollar<9> DontDelete|ReadOnly |
| @end |
| */ |
| |
| |
| static EncodedJSValue JSC_HOST_CALL callRegExpConstructor(JSGlobalObject*, CallFrame*); |
| static EncodedJSValue JSC_HOST_CALL constructWithRegExpConstructor(JSGlobalObject*, CallFrame*); |
| |
| RegExpConstructor::RegExpConstructor(VM& vm, Structure* structure) |
| : InternalFunction(vm, structure, callRegExpConstructor, constructWithRegExpConstructor) |
| { |
| } |
| |
| void RegExpConstructor::finishCreation(VM& vm, RegExpPrototype* regExpPrototype, GetterSetter* speciesSymbol) |
| { |
| Base::finishCreation(vm, vm.propertyNames->RegExp.string(), NameAdditionMode::WithoutStructureTransition); |
| ASSERT(inherits(vm, info())); |
| |
| putDirectWithoutTransition(vm, vm.propertyNames->prototype, regExpPrototype, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly); |
| putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(2), PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum); |
| |
| putDirectNonIndexAccessorWithoutTransition(vm, vm.propertyNames->speciesSymbol, speciesSymbol, PropertyAttribute::Accessor | PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum); |
| } |
| |
| template<int N> |
| EncodedJSValue regExpConstructorDollar(JSGlobalObject*, EncodedJSValue thisValue, PropertyName) |
| { |
| JSGlobalObject* globalObject = jsCast<RegExpConstructor*>(JSValue::decode(thisValue))->globalObject(); |
| return JSValue::encode(globalObject->regExpGlobalData().getBackref(globalObject, N)); |
| } |
| |
| EncodedJSValue regExpConstructorInput(JSGlobalObject*, EncodedJSValue thisValue, PropertyName) |
| { |
| JSGlobalObject* globalObject = jsCast<RegExpConstructor*>(JSValue::decode(thisValue))->globalObject(); |
| return JSValue::encode(globalObject->regExpGlobalData().input()); |
| } |
| |
| EncodedJSValue regExpConstructorMultiline(JSGlobalObject*, EncodedJSValue thisValue, PropertyName) |
| { |
| JSGlobalObject* globalObject = jsCast<RegExpConstructor*>(JSValue::decode(thisValue))->globalObject(); |
| return JSValue::encode(jsBoolean(globalObject->regExpGlobalData().multiline())); |
| } |
| |
| EncodedJSValue regExpConstructorLastMatch(JSGlobalObject*, EncodedJSValue thisValue, PropertyName) |
| { |
| JSGlobalObject* globalObject = jsCast<RegExpConstructor*>(JSValue::decode(thisValue))->globalObject(); |
| return JSValue::encode(globalObject->regExpGlobalData().getBackref(globalObject, 0)); |
| } |
| |
| EncodedJSValue regExpConstructorLastParen(JSGlobalObject*, EncodedJSValue thisValue, PropertyName) |
| { |
| JSGlobalObject* globalObject = jsCast<RegExpConstructor*>(JSValue::decode(thisValue))->globalObject(); |
| return JSValue::encode(globalObject->regExpGlobalData().getLastParen(globalObject)); |
| } |
| |
| EncodedJSValue regExpConstructorLeftContext(JSGlobalObject*, EncodedJSValue thisValue, PropertyName) |
| { |
| JSGlobalObject* globalObject = jsCast<RegExpConstructor*>(JSValue::decode(thisValue))->globalObject(); |
| return JSValue::encode(globalObject->regExpGlobalData().getLeftContext(globalObject)); |
| } |
| |
| EncodedJSValue regExpConstructorRightContext(JSGlobalObject*, EncodedJSValue thisValue, PropertyName) |
| { |
| JSGlobalObject* globalObject = jsCast<RegExpConstructor*>(JSValue::decode(thisValue))->globalObject(); |
| return JSValue::encode(globalObject->regExpGlobalData().getRightContext(globalObject)); |
| } |
| |
| bool setRegExpConstructorInput(JSGlobalObject* globalObject, EncodedJSValue thisValue, EncodedJSValue value) |
| { |
| VM& vm = globalObject->vm(); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| if (auto constructor = jsDynamicCast<RegExpConstructor*>(vm, JSValue::decode(thisValue))) { |
| auto* string = JSValue::decode(value).toString(globalObject); |
| RETURN_IF_EXCEPTION(scope, { }); |
| scope.release(); |
| JSGlobalObject* globalObject = constructor->globalObject(); |
| globalObject->regExpGlobalData().setInput(globalObject, string); |
| return true; |
| } |
| return false; |
| } |
| |
| bool setRegExpConstructorMultiline(JSGlobalObject* globalObject, EncodedJSValue thisValue, EncodedJSValue value) |
| { |
| VM& vm = globalObject->vm(); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| if (auto constructor = jsDynamicCast<RegExpConstructor*>(vm, JSValue::decode(thisValue))) { |
| bool multiline = JSValue::decode(value).toBoolean(globalObject); |
| RETURN_IF_EXCEPTION(scope, { }); |
| scope.release(); |
| JSGlobalObject* globalObject = constructor->globalObject(); |
| globalObject->regExpGlobalData().setMultiline(multiline); |
| return true; |
| } |
| return false; |
| } |
| |
| inline Structure* getRegExpStructure(JSGlobalObject* globalObject, JSValue newTarget) |
| { |
| Structure* structure = globalObject->regExpStructure(); |
| if (newTarget != jsUndefined()) |
| structure = InternalFunction::createSubclassStructure(globalObject, globalObject->regExpConstructor(), newTarget, structure); |
| return structure; |
| } |
| |
| inline OptionSet<Yarr::Flags> toFlags(JSGlobalObject* globalObject, JSValue flags) |
| { |
| VM& vm = globalObject->vm(); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| if (flags.isUndefined()) |
| return { }; |
| |
| auto result = Yarr::parseFlags(flags.toWTFString(globalObject)); |
| RETURN_IF_EXCEPTION(scope, { }); |
| if (!result) { |
| throwSyntaxError(globalObject, scope, "Invalid flags supplied to RegExp constructor."_s); |
| return { }; |
| } |
| |
| return result.value(); |
| } |
| |
| static JSObject* regExpCreate(JSGlobalObject* globalObject, JSValue newTarget, JSValue patternArg, JSValue flagsArg) |
| { |
| VM& vm = globalObject->vm(); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| String pattern = patternArg.isUndefined() ? emptyString() : patternArg.toWTFString(globalObject); |
| RETURN_IF_EXCEPTION(scope, nullptr); |
| |
| auto flags = toFlags(globalObject, flagsArg); |
| RETURN_IF_EXCEPTION(scope, nullptr); |
| |
| RegExp* regExp = RegExp::create(vm, pattern, flags); |
| if (UNLIKELY(!regExp->isValid())) { |
| throwException(globalObject, scope, regExp->errorToThrow(globalObject)); |
| return nullptr; |
| } |
| |
| Structure* structure = getRegExpStructure(globalObject, newTarget); |
| RETURN_IF_EXCEPTION(scope, nullptr); |
| return RegExpObject::create(vm, structure, regExp); |
| } |
| |
| JSObject* constructRegExp(JSGlobalObject* globalObject, const ArgList& args, JSObject* callee, JSValue newTarget) |
| { |
| VM& vm = globalObject->vm(); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| JSValue patternArg = args.at(0); |
| JSValue flagsArg = args.at(1); |
| |
| bool isPatternRegExp = patternArg.inherits<RegExpObject>(vm); |
| bool constructAsRegexp = isRegExp(vm, globalObject, patternArg); |
| RETURN_IF_EXCEPTION(scope, nullptr); |
| |
| if (newTarget.isUndefined() && constructAsRegexp && flagsArg.isUndefined()) { |
| JSValue constructor = patternArg.get(globalObject, vm.propertyNames->constructor); |
| RETURN_IF_EXCEPTION(scope, nullptr); |
| if (callee == constructor) { |
| // We know that patternArg is a object otherwise constructAsRegexp would be false. |
| return patternArg.getObject(); |
| } |
| } |
| |
| if (isPatternRegExp) { |
| RegExp* regExp = jsCast<RegExpObject*>(patternArg)->regExp(); |
| Structure* structure = getRegExpStructure(globalObject, newTarget); |
| RETURN_IF_EXCEPTION(scope, nullptr); |
| |
| if (!flagsArg.isUndefined()) { |
| auto flags = toFlags(globalObject, flagsArg); |
| RETURN_IF_EXCEPTION(scope, nullptr); |
| |
| regExp = RegExp::create(vm, regExp->pattern(), flags); |
| if (UNLIKELY(!regExp->isValid())) { |
| throwException(globalObject, scope, regExp->errorToThrow(globalObject)); |
| return nullptr; |
| } |
| } |
| |
| return RegExpObject::create(vm, structure, regExp); |
| } |
| |
| if (constructAsRegexp) { |
| JSValue pattern = patternArg.get(globalObject, vm.propertyNames->source); |
| RETURN_IF_EXCEPTION(scope, nullptr); |
| if (flagsArg.isUndefined()) { |
| flagsArg = patternArg.get(globalObject, vm.propertyNames->flags); |
| RETURN_IF_EXCEPTION(scope, nullptr); |
| } |
| patternArg = pattern; |
| } |
| |
| RELEASE_AND_RETURN(scope, regExpCreate(globalObject, newTarget, patternArg, flagsArg)); |
| } |
| |
| EncodedJSValue JSC_HOST_CALL esSpecRegExpCreate(JSGlobalObject* globalObject, CallFrame* callFrame) |
| { |
| JSValue patternArg = callFrame->argument(0); |
| JSValue flagsArg = callFrame->argument(1); |
| return JSValue::encode(regExpCreate(globalObject, jsUndefined(), patternArg, flagsArg)); |
| } |
| |
| EncodedJSValue JSC_HOST_CALL esSpecIsRegExp(JSGlobalObject* globalObject, CallFrame* callFrame) |
| { |
| VM& vm = globalObject->vm(); |
| return JSValue::encode(jsBoolean(isRegExp(vm, globalObject, callFrame->argument(0)))); |
| } |
| |
| static EncodedJSValue JSC_HOST_CALL constructWithRegExpConstructor(JSGlobalObject* globalObject, CallFrame* callFrame) |
| { |
| ArgList args(callFrame); |
| return JSValue::encode(constructRegExp(globalObject, args, callFrame->jsCallee(), callFrame->newTarget())); |
| } |
| |
| static EncodedJSValue JSC_HOST_CALL callRegExpConstructor(JSGlobalObject* globalObject, CallFrame* callFrame) |
| { |
| ArgList args(callFrame); |
| return JSValue::encode(constructRegExp(globalObject, args, callFrame->jsCallee())); |
| } |
| |
| } // namespace JSC |
