| /* |
| * Copyright (C) 2010-2019 Apple Inc. All rights reserved. |
| * |
| * 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. AND ITS CONTRIBUTORS ``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 ITS 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. |
| */ |
| |
| #pragma once |
| |
| #include "Lexer.h" |
| #include "ParserFunctionInfo.h" |
| #include "YarrSyntaxChecker.h" |
| |
| namespace JSC { |
| |
| class SyntaxChecker { |
| public: |
| struct BinaryExprContext { |
| BinaryExprContext(SyntaxChecker& context) |
| : m_context(&context) |
| { |
| m_token = m_context->m_topBinaryExpr; |
| m_context->m_topBinaryExpr = 0; |
| } |
| ~BinaryExprContext() |
| { |
| m_context->m_topBinaryExpr = m_token; |
| } |
| private: |
| int m_token; |
| SyntaxChecker* m_context; |
| }; |
| struct UnaryExprContext { |
| UnaryExprContext(SyntaxChecker& context) |
| : m_context(&context) |
| { |
| m_token = m_context->m_topUnaryToken; |
| m_context->m_topUnaryToken = 0; |
| } |
| ~UnaryExprContext() |
| { |
| m_context->m_topUnaryToken = m_token; |
| } |
| private: |
| int m_token; |
| SyntaxChecker* m_context; |
| }; |
| |
| SyntaxChecker(VM& vm, void*) |
| : m_vm(vm) |
| { |
| } |
| |
| static const constexpr int MetaPropertyBit = 0x80000000; |
| enum : int { NoneExpr = 0, |
| ResolveEvalExpr, ResolveExpr, IntegerExpr, DoubleExpr, StringExpr, BigIntExpr, |
| ThisExpr, NullExpr, BoolExpr, RegExpExpr, ObjectLiteralExpr, |
| FunctionExpr, ClassExpr, SuperExpr, ImportExpr, BracketExpr, DotExpr, CallExpr, |
| NewExpr, PreExpr, PostExpr, UnaryExpr, BinaryExpr, OptionalChain, PrivateDotExpr, |
| ConditionalExpr, AssignmentExpr, TypeofExpr, |
| DeleteExpr, ArrayLiteralExpr, BindingDestructuring, RestParameter, |
| ArrayDestructuring, ObjectDestructuring, SourceElementsResult, |
| FunctionBodyResult, SpreadExpr, ObjectSpreadExpr, ArgumentsResult, |
| PropertyListResult, ArgumentsListResult, ElementsListResult, |
| StatementResult, FormalParameterListResult, ClauseResult, |
| ClauseListResult, CommaExpr, DestructuringAssignment, |
| TemplateStringResult, TemplateStringListResult, |
| TemplateExpressionListResult, TemplateExpr, |
| TaggedTemplateExpr, YieldExpr, AwaitExpr, |
| ModuleNameResult, PrivateIdentifier, |
| ImportSpecifierResult, ImportSpecifierListResult, ImportAssertionListResult, |
| ExportSpecifierResult, ExportSpecifierListResult, |
| |
| NewTargetExpr = MetaPropertyBit | 0, |
| ImportMetaExpr = MetaPropertyBit | 1, |
| }; |
| typedef int ExpressionType; |
| |
| typedef ExpressionType Expression; |
| typedef int SourceElements; |
| typedef int Arguments; |
| typedef ExpressionType Comma; |
| struct Property { |
| ALWAYS_INLINE Property(void* = nullptr) |
| { |
| } |
| ALWAYS_INLINE Property(PropertyNode::Type type) |
| : type(type) |
| { |
| } |
| ALWAYS_INLINE Property(PropertyNode::Type type, bool isUnderscoreProtoSetter) |
| : type(type) |
| , isUnderscoreProtoSetter(isUnderscoreProtoSetter) |
| { |
| } |
| ALWAYS_INLINE bool operator!() { return !type; } |
| PropertyNode::Type type { static_cast<PropertyNode::Type>(0) }; |
| bool isUnderscoreProtoSetter { false }; |
| }; |
| typedef int PropertyList; |
| typedef int ElementList; |
| typedef int ArgumentsList; |
| typedef int TemplateExpressionList; |
| typedef int TemplateString; |
| typedef int TemplateStringList; |
| typedef int TemplateLiteral; |
| typedef int FormalParameterList; |
| typedef int FunctionBody; |
| typedef int ClassExpression; |
| typedef int ModuleName; |
| typedef int ImportSpecifier; |
| typedef int ImportSpecifierList; |
| typedef int ImportAssertionList; |
| typedef int ExportSpecifier; |
| typedef int ExportSpecifierList; |
| typedef int Statement; |
| typedef int ClauseList; |
| typedef int Clause; |
| typedef int BinaryOperand; |
| typedef int DestructuringPattern; |
| typedef DestructuringPattern ArrayPattern; |
| typedef DestructuringPattern ObjectPattern; |
| typedef DestructuringPattern RestPattern; |
| |
| static constexpr bool CreatesAST = false; |
| static constexpr bool NeedsFreeVariableInfo = false; |
| static constexpr bool CanUseFunctionCache = true; |
| static constexpr OptionSet<LexerFlags> DontBuildKeywords = LexerFlags::DontBuildKeywords; |
| static constexpr OptionSet<LexerFlags> DontBuildStrings = LexerFlags::DontBuildStrings; |
| |
| int createSourceElements() { return SourceElementsResult; } |
| ExpressionType makeFunctionCallNode(const JSTokenLocation&, ExpressionType, bool, int, int, int, int, size_t, bool) { return CallExpr; } |
| ExpressionType createCommaExpr(const JSTokenLocation&, ExpressionType) { return CommaExpr; } |
| ExpressionType appendToCommaExpr(const JSTokenLocation&, ExpressionType, ExpressionType, ExpressionType) { return CommaExpr; } |
| ExpressionType makeAssignNode(const JSTokenLocation&, ExpressionType, Operator, ExpressionType, bool, bool, int, int, int) { return AssignmentExpr; } |
| ExpressionType makePrefixNode(const JSTokenLocation&, ExpressionType, Operator, int, int, int) { return PreExpr; } |
| ExpressionType makePostfixNode(const JSTokenLocation&, ExpressionType, Operator, int, int, int) { return PostExpr; } |
| ExpressionType makeTypeOfNode(const JSTokenLocation&, ExpressionType) { return TypeofExpr; } |
| ExpressionType makeDeleteNode(const JSTokenLocation&, ExpressionType, int, int, int) { return DeleteExpr; } |
| ExpressionType makeNegateNode(const JSTokenLocation&, ExpressionType) { return UnaryExpr; } |
| ExpressionType makeBitwiseNotNode(const JSTokenLocation&, ExpressionType) { return UnaryExpr; } |
| ExpressionType createLogicalNot(const JSTokenLocation&, ExpressionType) { return UnaryExpr; } |
| ExpressionType createUnaryPlus(const JSTokenLocation&, ExpressionType) { return UnaryExpr; } |
| ExpressionType createVoid(const JSTokenLocation&, ExpressionType) { return UnaryExpr; } |
| ExpressionType createImportExpr(const JSTokenLocation&, ExpressionType, ExpressionType, int, int, int) { return ImportExpr; } |
| ExpressionType createThisExpr(const JSTokenLocation&) { return ThisExpr; } |
| ExpressionType createSuperExpr(const JSTokenLocation&) { return SuperExpr; } |
| ExpressionType createNewTargetExpr(const JSTokenLocation&) { return NewTargetExpr; } |
| ExpressionType createImportMetaExpr(const JSTokenLocation&, ExpressionType) { return ImportMetaExpr; } |
| ALWAYS_INLINE bool isMetaProperty(ExpressionType type) { return type & MetaPropertyBit; } |
| ALWAYS_INLINE bool isNewTarget(ExpressionType type) { return type == NewTargetExpr; } |
| ALWAYS_INLINE bool isImportMeta(ExpressionType type) { return type == ImportMetaExpr; } |
| ExpressionType createResolve(const JSTokenLocation&, const Identifier&, int, int) { return ResolveExpr; } |
| ExpressionType createPrivateIdentifierNode(const JSTokenLocation&, const Identifier&) { return PrivateIdentifier; } |
| ExpressionType createObjectLiteral(const JSTokenLocation&) { return ObjectLiteralExpr; } |
| ExpressionType createObjectLiteral(const JSTokenLocation&, int) { return ObjectLiteralExpr; } |
| ExpressionType createArray(const JSTokenLocation&, int) { return ArrayLiteralExpr; } |
| ExpressionType createArray(const JSTokenLocation&, int, int) { return ArrayLiteralExpr; } |
| ExpressionType createDoubleExpr(const JSTokenLocation&, double) { return DoubleExpr; } |
| ExpressionType createIntegerExpr(const JSTokenLocation&, double) { return IntegerExpr; } |
| ExpressionType createBigInt(const JSTokenLocation&, const Identifier*, int) { return BigIntExpr; } |
| ExpressionType createString(const JSTokenLocation&, const Identifier*) { return StringExpr; } |
| ExpressionType createBoolean(const JSTokenLocation&, bool) { return BoolExpr; } |
| ExpressionType createNull(const JSTokenLocation&) { return NullExpr; } |
| ExpressionType createBracketAccess(const JSTokenLocation&, ExpressionType, ExpressionType, bool, int, int, int) { return BracketExpr; } |
| ExpressionType createDotAccess(const JSTokenLocation&, ExpressionType, const Identifier*, DotType type, int, int, int) { return type == DotType::PrivateMember ? PrivateDotExpr : DotExpr; } |
| ExpressionType createRegExp(const JSTokenLocation&, const Identifier& pattern, const Identifier& flags, int) { return Yarr::hasError(Yarr::checkSyntax(pattern.string(), flags.string())) ? 0 : RegExpExpr; } |
| ExpressionType createNewExpr(const JSTokenLocation&, ExpressionType, int, int, int, int) { return NewExpr; } |
| ExpressionType createNewExpr(const JSTokenLocation&, ExpressionType, int, int) { return NewExpr; } |
| ExpressionType createOptionalChain(const JSTokenLocation&, ExpressionType, ExpressionType, bool) { return OptionalChain; } |
| ExpressionType createConditionalExpr(const JSTokenLocation&, ExpressionType, ExpressionType, ExpressionType) { return ConditionalExpr; } |
| ExpressionType createAssignResolve(const JSTokenLocation&, const Identifier&, ExpressionType, int, int, int, AssignmentContext) { return AssignmentExpr; } |
| ExpressionType createEmptyVarExpression(const JSTokenLocation&, const Identifier&) { return AssignmentExpr; } |
| ExpressionType createEmptyLetExpression(const JSTokenLocation&, const Identifier&) { return AssignmentExpr; } |
| ExpressionType createYield(const JSTokenLocation&) { return YieldExpr; } |
| ExpressionType createYield(const JSTokenLocation&, ExpressionType, bool, int, int, int) { return YieldExpr; } |
| ExpressionType createAwait(const JSTokenLocation&, ExpressionType, int, int, int) { return AwaitExpr; } |
| ClassExpression createClassExpr(const JSTokenLocation&, const ParserClassInfo<SyntaxChecker>&, VariableEnvironment&&, VariableEnvironment&&, ExpressionType, ExpressionType, PropertyList, int, int, int) { return ClassExpr; } |
| ExpressionType createFunctionExpr(const JSTokenLocation&, const ParserFunctionInfo<SyntaxChecker>&) { return FunctionExpr; } |
| ExpressionType createGeneratorFunctionBody(const JSTokenLocation&, const ParserFunctionInfo<SyntaxChecker>&, const Identifier&) { return FunctionExpr; } |
| ExpressionType createAsyncFunctionBody(const JSTokenLocation&, const ParserFunctionInfo<SyntaxChecker>&) { return FunctionExpr; } |
| int createFunctionMetadata(const JSTokenLocation&, const JSTokenLocation&, unsigned, unsigned, int, int, int, LexicalScopeFeatures, ConstructorKind, SuperBinding, unsigned, SourceParseMode, bool) { return FunctionBodyResult; } |
| ExpressionType createArrowFunctionExpr(const JSTokenLocation&, const ParserFunctionInfo<SyntaxChecker>&) { return FunctionExpr; } |
| ExpressionType createMethodDefinition(const JSTokenLocation&, const ParserFunctionInfo<SyntaxChecker>&) { return FunctionExpr; } |
| void setFunctionNameStart(int, int) { } |
| int createArguments() { return ArgumentsResult; } |
| int createArguments(int, bool) { return ArgumentsResult; } |
| ExpressionType createSpreadExpression(const JSTokenLocation&, ExpressionType, int, int, int) { return SpreadExpr; } |
| ExpressionType createObjectSpreadExpression(const JSTokenLocation&, ExpressionType, int, int, int) { return ObjectSpreadExpr; } |
| TemplateString createTemplateString(const JSTokenLocation&, const Identifier*, const Identifier*) { return TemplateStringResult; } |
| TemplateStringList createTemplateStringList(TemplateString) { return TemplateStringListResult; } |
| TemplateStringList createTemplateStringList(TemplateStringList, TemplateString) { return TemplateStringListResult; } |
| TemplateExpressionList createTemplateExpressionList(Expression) { return TemplateExpressionListResult; } |
| TemplateExpressionList createTemplateExpressionList(TemplateExpressionList, Expression) { return TemplateExpressionListResult; } |
| TemplateLiteral createTemplateLiteral(const JSTokenLocation&, TemplateStringList) { return TemplateExpr; } |
| TemplateLiteral createTemplateLiteral(const JSTokenLocation&, TemplateStringList, TemplateExpressionList) { return TemplateExpr; } |
| ExpressionType createTaggedTemplate(const JSTokenLocation&, ExpressionType, TemplateLiteral, int, int, int) { return TaggedTemplateExpr; } |
| |
| int createArgumentsList(const JSTokenLocation&, int) { return ArgumentsListResult; } |
| int createArgumentsList(const JSTokenLocation&, int, int) { return ArgumentsListResult; } |
| Property createProperty(const Identifier* name, int, PropertyNode::Type type, SuperBinding superBinding, InferName, ClassElementTag tag) |
| { |
| bool needsSuperBinding = superBinding == SuperBinding::Needed; |
| bool isClassProperty = tag != ClassElementTag::No; |
| return Property(type, PropertyNode::isUnderscoreProtoSetter(m_vm, name, type, needsSuperBinding, isClassProperty)); |
| } |
| Property createProperty(int, PropertyNode::Type type, SuperBinding, ClassElementTag) |
| { |
| return Property(type); |
| } |
| Property createProperty(VM&, ParserArena&, double, int, PropertyNode::Type type, SuperBinding, ClassElementTag) |
| { |
| return Property(type); |
| } |
| Property createProperty(int, int, PropertyNode::Type type, SuperBinding, ClassElementTag) |
| { |
| return Property(type); |
| } |
| Property createProperty(const Identifier*, int, int, PropertyNode::Type type, SuperBinding, ClassElementTag) |
| { |
| return Property(type); |
| } |
| int createPropertyList(const JSTokenLocation&, Property) { return PropertyListResult; } |
| int createPropertyList(const JSTokenLocation&, Property, int) { return PropertyListResult; } |
| int createElementList(int, int) { return ElementsListResult; } |
| int createElementList(int, int, int) { return ElementsListResult; } |
| int createElementList(int) { return ElementsListResult; } |
| int createFormalParameterList() { return FormalParameterListResult; } |
| void appendParameter(int, DestructuringPattern, int) { } |
| int createClause(int, int) { return ClauseResult; } |
| int createClauseList(int) { return ClauseListResult; } |
| int createClauseList(int, int) { return ClauseListResult; } |
| int createFuncDeclStatement(const JSTokenLocation&, const ParserFunctionInfo<SyntaxChecker>&) { return StatementResult; } |
| int createDefineField(const JSTokenLocation&, const Identifier*, int, DefineFieldNode::Type) { return 0; } |
| int createClassDeclStatement(const JSTokenLocation&, ClassExpression, |
| const JSTextPosition&, const JSTextPosition&, int, int) { return StatementResult; } |
| int createBlockStatement(const JSTokenLocation&, int, int, int, VariableEnvironment&&, DeclarationStacks::FunctionStack&&) { return StatementResult; } |
| int createExprStatement(const JSTokenLocation&, int, int, int) { return StatementResult; } |
| int createIfStatement(const JSTokenLocation&, int, int, int, int) { return StatementResult; } |
| int createIfStatement(const JSTokenLocation&, int, int, int, int, int) { return StatementResult; } |
| int createForLoop(const JSTokenLocation&, int, int, int, int, int, int, VariableEnvironment&&) { return StatementResult; } |
| int createForInLoop(const JSTokenLocation&, int, int, int, const JSTokenLocation&, int, int, int, int, int, VariableEnvironment&&) { return StatementResult; } |
| int createForOfLoop(bool, const JSTokenLocation&, int, int, int, const JSTokenLocation&, int, int, int, int, int, VariableEnvironment&&) { return StatementResult; } |
| int createEmptyStatement(const JSTokenLocation&) { return StatementResult; } |
| int createDeclarationStatement(const JSTokenLocation&, int, int, int) { return StatementResult; } |
| int createReturnStatement(const JSTokenLocation&, int, int, int) { return StatementResult; } |
| int createBreakStatement(const JSTokenLocation&, int, int) { return StatementResult; } |
| int createBreakStatement(const JSTokenLocation&, const Identifier*, int, int) { return StatementResult; } |
| int createContinueStatement(const JSTokenLocation&, int, int) { return StatementResult; } |
| int createContinueStatement(const JSTokenLocation&, const Identifier*, int, int) { return StatementResult; } |
| int createTryStatement(const JSTokenLocation&, int, int, int, int, int, int, VariableEnvironment&&) { return StatementResult; } |
| int createSwitchStatement(const JSTokenLocation&, int, int, int, int, int, int, VariableEnvironment&&, DeclarationStacks::FunctionStack&&) { return StatementResult; } |
| int createWhileStatement(const JSTokenLocation&, int, int, int, int) { return StatementResult; } |
| int createWithStatement(const JSTokenLocation&, int, int, int, int, int, int) { return StatementResult; } |
| int createDoWhileStatement(const JSTokenLocation&, int, int, int, int) { return StatementResult; } |
| int createLabelStatement(const JSTokenLocation&, const Identifier*, int, int, int) { return StatementResult; } |
| int createThrowStatement(const JSTokenLocation&, int, int, int) { return StatementResult; } |
| int createDebugger(const JSTokenLocation&, int, int) { return StatementResult; } |
| int createConstStatement(const JSTokenLocation&, int, int, int) { return StatementResult; } |
| int createModuleName(const JSTokenLocation&, const Identifier&) { return ModuleNameResult; } |
| ImportSpecifier createImportSpecifier(const JSTokenLocation&, const Identifier&, const Identifier&) { return ImportSpecifierResult; } |
| ImportSpecifierList createImportSpecifierList() { return ImportSpecifierListResult; } |
| void appendImportSpecifier(ImportSpecifierList, ImportSpecifier) { } |
| ImportAssertionList createImportAssertionList() { return ImportAssertionListResult; } |
| void appendImportAssertion(ImportAssertionList, const Identifier&, const Identifier&) { } |
| int createImportDeclaration(const JSTokenLocation&, ImportSpecifierList, ModuleName, ImportAssertionList) { return StatementResult; } |
| int createExportAllDeclaration(const JSTokenLocation&, ModuleName, ImportAssertionList) { return StatementResult; } |
| int createExportDefaultDeclaration(const JSTokenLocation&, int, const Identifier&) { return StatementResult; } |
| int createExportLocalDeclaration(const JSTokenLocation&, int) { return StatementResult; } |
| int createExportNamedDeclaration(const JSTokenLocation&, ExportSpecifierList, ModuleName, ImportAssertionList) { return StatementResult; } |
| ExportSpecifier createExportSpecifier(const JSTokenLocation&, const Identifier&, const Identifier&) { return ExportSpecifierResult; } |
| ExportSpecifierList createExportSpecifierList() { return ExportSpecifierListResult; } |
| void appendExportSpecifier(ExportSpecifierList, ExportSpecifier) { } |
| |
| int appendConstDecl(const JSTokenLocation&, int, const Identifier*, int) { return StatementResult; } |
| Property createGetterOrSetterProperty(const JSTokenLocation&, PropertyNode::Type type, const Identifier*, const ParserFunctionInfo<SyntaxChecker>&, ClassElementTag) |
| { |
| return Property(type); |
| } |
| Property createGetterOrSetterProperty(const JSTokenLocation&, PropertyNode::Type type, int, const ParserFunctionInfo<SyntaxChecker>&, ClassElementTag) |
| { |
| return Property(type); |
| } |
| Property createGetterOrSetterProperty(VM&, ParserArena&, const JSTokenLocation&, PropertyNode::Type type, double, const ParserFunctionInfo<SyntaxChecker>&, ClassElementTag) |
| { |
| return Property(type); |
| } |
| |
| void appendStatement(int, int) { } |
| int evalCount() const { return 0; } |
| void appendBinaryExpressionInfo(int& operandStackDepth, int expr, int, int, int, bool) |
| { |
| if (!m_topBinaryExpr) |
| m_topBinaryExpr = expr; |
| else |
| m_topBinaryExpr = BinaryExpr; |
| operandStackDepth++; |
| } |
| |
| // Logic to handle datastructures used during parsing of binary expressions |
| void operatorStackPop(int& operatorStackDepth) { operatorStackDepth--; } |
| bool operatorStackShouldReduce(int) { return true; } |
| BinaryOperand getFromOperandStack(int) { return m_topBinaryExpr; } |
| void shrinkOperandStackBy(int& operandStackDepth, int amount) { operandStackDepth -= amount; } |
| void appendBinaryOperation(const JSTokenLocation&, int& operandStackDepth, int&, BinaryOperand, BinaryOperand) { operandStackDepth++; } |
| void operatorStackAppend(int& operatorStackDepth, int, int) { operatorStackDepth++; } |
| int popOperandStack(int&) { int res = m_topBinaryExpr; m_topBinaryExpr = 0; return res; } |
| |
| void appendUnaryToken(int& stackDepth, int tok, int) { stackDepth = 1; m_topUnaryToken = tok; } |
| int unaryTokenStackLastType(int&) { return m_topUnaryToken; } |
| JSTextPosition unaryTokenStackLastStart(int&) { return JSTextPosition(0, 0, 0); } |
| void unaryTokenStackRemoveLast(int& stackDepth) { stackDepth = 0; } |
| int unaryTokenStackDepth() const { return 0; } |
| void setUnaryTokenStackDepth(int) { } |
| |
| void assignmentStackAppend(int& assignmentStackDepth, int, int, int, int, Operator) { assignmentStackDepth = 1; } |
| int createAssignment(const JSTokenLocation&, int& assignmentStackDepth, int, int, int, int) { assignmentStackDepth = 0; return AssignmentExpr; } |
| PropertyNode::Type getType(const Property& property) const { return property.type; } |
| bool isUnderscoreProtoSetter(const Property& property) const { return property.isUnderscoreProtoSetter; } |
| bool isResolve(ExpressionType expr) const { return expr == ResolveExpr || expr == ResolveEvalExpr; } |
| ExpressionType createDestructuringAssignment(const JSTokenLocation&, int, ExpressionType) |
| { |
| return DestructuringAssignment; |
| } |
| |
| ArrayPattern createArrayPattern(const JSTokenLocation&) |
| { |
| return ArrayDestructuring; |
| } |
| void appendArrayPatternSkipEntry(ArrayPattern, const JSTokenLocation&) |
| { |
| } |
| void appendArrayPatternEntry(ArrayPattern, const JSTokenLocation&, DestructuringPattern, int) |
| { |
| } |
| void appendArrayPatternRestEntry(ArrayPattern, const JSTokenLocation&, DestructuringPattern) |
| { |
| } |
| void finishArrayPattern(ArrayPattern, const JSTextPosition&, const JSTextPosition&, const JSTextPosition&) |
| { |
| } |
| ObjectPattern createObjectPattern(const JSTokenLocation&) |
| { |
| return ObjectDestructuring; |
| } |
| void appendObjectPatternEntry(ObjectPattern, const JSTokenLocation&, bool, const Identifier&, DestructuringPattern, int) |
| { |
| } |
| void appendObjectPatternEntry(VM&, ObjectPattern, const JSTokenLocation&, Expression, DestructuringPattern, Expression) |
| { |
| } |
| void appendObjectPatternRestEntry(VM&, ObjectPattern, const JSTokenLocation&, DestructuringPattern) |
| { |
| } |
| void setContainsObjectRestElement(ObjectPattern, bool) |
| { |
| } |
| void setContainsComputedProperty(ObjectPattern, bool) |
| { |
| } |
| |
| DestructuringPattern createBindingLocation(const JSTokenLocation&, const Identifier&, const JSTextPosition&, const JSTextPosition&, AssignmentContext) |
| { |
| return BindingDestructuring; |
| } |
| RestPattern createRestParameter(DestructuringPattern, size_t) |
| { |
| return RestParameter; |
| } |
| DestructuringPattern createAssignmentElement(const Expression&, const JSTextPosition&, const JSTextPosition&) |
| { |
| return BindingDestructuring; |
| } |
| |
| bool isBindingNode(DestructuringPattern pattern) |
| { |
| return pattern == BindingDestructuring; |
| } |
| |
| bool isLocation(ExpressionType type) |
| { |
| return type == ResolveExpr || type == DotExpr || type == PrivateDotExpr || type == BracketExpr; |
| } |
| |
| bool isPrivateLocation(ExpressionType type) |
| { |
| return type == PrivateDotExpr; |
| } |
| |
| bool isAssignmentLocation(ExpressionType type) |
| { |
| return isLocation(type) || type == DestructuringAssignment; |
| } |
| |
| bool isObjectLiteral(ExpressionType type) |
| { |
| return type == ObjectLiteralExpr; |
| } |
| |
| bool isArrayLiteral(ExpressionType type) |
| { |
| return type == ArrayLiteralExpr; |
| } |
| |
| bool isObjectOrArrayLiteral(ExpressionType type) |
| { |
| return isObjectLiteral(type) || isArrayLiteral(type); |
| } |
| |
| bool isFunctionCall(ExpressionType type) |
| { |
| return type == CallExpr; |
| } |
| |
| bool shouldSkipPauseLocation(int) const { return true; } |
| |
| void setEndOffset(int, int) { } |
| int endOffset(int) { return 0; } |
| void setStartOffset(int, int) { } |
| |
| JSTextPosition breakpointLocation(int) { return { }; } |
| |
| void propagateArgumentsUse() { } |
| |
| private: |
| VM& m_vm; |
| int m_topBinaryExpr; |
| int m_topUnaryToken; |
| }; |
| |
| } // namespace JSC |
