| /* |
| * Copyright (C) 2010 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. |
| */ |
| |
| #ifndef SyntaxChecker_h |
| #define SyntaxChecker_h |
| |
| #include "Lexer.h" |
| #include <yarr/YarrSyntaxChecker.h> |
| |
| namespace JSC { |
| |
| class SyntaxChecker { |
| public: |
| struct BinaryExprContext { |
| BinaryExprContext(SyntaxChecker& context) |
| : m_context(&context) |
| { |
| m_context->m_topBinaryExprs.append(m_context->m_topBinaryExpr); |
| m_context->m_topBinaryExpr = 0; |
| } |
| ~BinaryExprContext() |
| { |
| m_context->m_topBinaryExpr = m_context->m_topBinaryExprs.last(); |
| m_context->m_topBinaryExprs.removeLast(); |
| } |
| private: |
| SyntaxChecker* m_context; |
| }; |
| struct UnaryExprContext { |
| UnaryExprContext(SyntaxChecker& context) |
| : m_context(&context) |
| { |
| m_context->m_topUnaryTokens.append(m_context->m_topUnaryToken); |
| m_context->m_topUnaryToken = 0; |
| } |
| ~UnaryExprContext() |
| { |
| m_context->m_topUnaryToken = m_context->m_topUnaryTokens.last(); |
| m_context->m_topUnaryTokens.removeLast(); |
| } |
| private: |
| SyntaxChecker* m_context; |
| }; |
| |
| SyntaxChecker(JSGlobalData* , void*) |
| { |
| } |
| |
| typedef SyntaxChecker FunctionBodyBuilder; |
| enum { NoneExpr = 0, |
| ResolveEvalExpr, ResolveExpr, NumberExpr, StringExpr, |
| ThisExpr, NullExpr, BoolExpr, RegExpExpr, ObjectLiteralExpr, |
| FunctionExpr, BracketExpr, DotExpr, CallExpr, |
| NewExpr, PreExpr, PostExpr, UnaryExpr, BinaryExpr, |
| ConditionalExpr, AssignmentExpr, TypeofExpr, |
| DeleteExpr, ArrayLiteralExpr }; |
| typedef int ExpressionType; |
| |
| typedef ExpressionType Expression; |
| typedef int SourceElements; |
| typedef int Arguments; |
| typedef ExpressionType Comma; |
| struct Property { |
| ALWAYS_INLINE Property(void* = 0) |
| : type((PropertyNode::Type)0) |
| { |
| } |
| ALWAYS_INLINE Property(const Identifier* ident, PropertyNode::Type ty) |
| : name(ident) |
| , type(ty) |
| { |
| } |
| ALWAYS_INLINE Property(PropertyNode::Type ty) |
| : name(0) |
| , type(ty) |
| { |
| } |
| ALWAYS_INLINE bool operator!() { return !type; } |
| const Identifier* name; |
| PropertyNode::Type type; |
| }; |
| typedef int PropertyList; |
| typedef int ElementList; |
| typedef int ArgumentsList; |
| typedef int FormalParameterList; |
| typedef int FunctionBody; |
| typedef int Statement; |
| typedef int ClauseList; |
| typedef int Clause; |
| typedef int ConstDeclList; |
| typedef int BinaryOperand; |
| |
| static const bool CreatesAST = false; |
| static const bool NeedsFreeVariableInfo = false; |
| static const bool CanUseFunctionCache = true; |
| static const unsigned DontBuildKeywords = LexexFlagsDontBuildKeywords; |
| static const unsigned DontBuildStrings = LexerFlagsDontBuildStrings; |
| |
| int createSourceElements() { return 1; } |
| ExpressionType makeFunctionCallNode(const JSTokenLocation&, int, int, int, int, int) { return CallExpr; } |
| void appendToComma(ExpressionType& base, ExpressionType right) { base = right; } |
| ExpressionType createCommaExpr(const JSTokenLocation&, ExpressionType, ExpressionType right) { return right; } |
| 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 thisExpr(const JSTokenLocation&) { return ThisExpr; } |
| ExpressionType createResolve(const JSTokenLocation&, const Identifier*, int) { return ResolveExpr; } |
| 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 createNumberExpr(const JSTokenLocation&, double) { return NumberExpr; } |
| 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*, int, int, int) { return DotExpr; } |
| ExpressionType createRegExp(const JSTokenLocation&, const Identifier& pattern, const Identifier&, int) { return Yarr::checkSyntax(pattern.string()) ? 0 : RegExpExpr; } |
| ExpressionType createNewExpr(const JSTokenLocation&, ExpressionType, int, int, int, int) { return NewExpr; } |
| ExpressionType createNewExpr(const JSTokenLocation&, ExpressionType, int, int) { return NewExpr; } |
| ExpressionType createConditionalExpr(const JSTokenLocation&, ExpressionType, ExpressionType, ExpressionType) { return ConditionalExpr; } |
| ExpressionType createAssignResolve(const JSTokenLocation&, const Identifier&, ExpressionType, int, int, int) { return AssignmentExpr; } |
| ExpressionType createFunctionExpr(const JSTokenLocation&, const Identifier*, int, int, int, int, int, int) { return FunctionExpr; } |
| int createFunctionBody(const JSTokenLocation&, bool) { return 1; } |
| void setFunctionStart(int, int) { } |
| int createArguments() { return 1; } |
| int createArguments(int) { return 1; } |
| int createArgumentsList(const JSTokenLocation&, int) { return 1; } |
| int createArgumentsList(const JSTokenLocation&, int, int) { return 1; } |
| template <bool complete> Property createProperty(const Identifier* name, int, PropertyNode::Type type) |
| { |
| if (!complete) |
| return Property(type); |
| ASSERT(name); |
| return Property(name, type); |
| } |
| template <bool complete> Property createProperty(JSGlobalData* globalData, double name, int, PropertyNode::Type type) |
| { |
| if (!complete) |
| return Property(type); |
| return Property(&globalData->parserArena->identifierArena().makeNumericIdentifier(globalData, name), type); |
| } |
| int createPropertyList(const JSTokenLocation&, Property) { return 1; } |
| int createPropertyList(const JSTokenLocation&, Property, int) { return 1; } |
| int createElementList(int, int) { return 1; } |
| int createElementList(int, int, int) { return 1; } |
| int createFormalParameterList(const Identifier&) { return 1; } |
| int createFormalParameterList(int, const Identifier&) { return 1; } |
| int createClause(int, int) { return 1; } |
| int createClauseList(int) { return 1; } |
| int createClauseList(int, int) { return 1; } |
| void setUsesArguments(int) { } |
| int createFuncDeclStatement(const JSTokenLocation&, const Identifier*, int, int, int, int, int, int) { return 1; } |
| int createBlockStatement(const JSTokenLocation&, int, int, int) { return 1; } |
| int createExprStatement(const JSTokenLocation&, int, int, int) { return 1; } |
| int createIfStatement(const JSTokenLocation&, int, int, int, int) { return 1; } |
| int createIfStatement(const JSTokenLocation&, int, int, int, int, int) { return 1; } |
| int createForLoop(const JSTokenLocation&, int, int, int, int, int, int) { return 1; } |
| int createForInLoop(const JSTokenLocation&, const Identifier*, int, int, int, int, int, int, int, int, int, int) { return 1; } |
| int createForInLoop(const JSTokenLocation&, int, int, int, int, int, int, int, int) { return 1; } |
| int createEmptyStatement(const JSTokenLocation&) { return 1; } |
| int createVarStatement(const JSTokenLocation&, int, int, int) { return 1; } |
| int createReturnStatement(const JSTokenLocation&, int, int, int, int, int) { return 1; } |
| int createBreakStatement(const JSTokenLocation&, int, int, int, int) { return 1; } |
| int createBreakStatement(const JSTokenLocation&, const Identifier*, int, int, int, int) { return 1; } |
| int createContinueStatement(const JSTokenLocation&, int, int, int, int) { return 1; } |
| int createContinueStatement(const JSTokenLocation&, const Identifier*, int, int, int, int) { return 1; } |
| int createTryStatement(const JSTokenLocation&, int, const Identifier*, int, int, int, int) { return 1; } |
| int createSwitchStatement(const JSTokenLocation&, int, int, int, int, int, int) { return 1; } |
| int createWhileStatement(const JSTokenLocation&, int, int, int, int) { return 1; } |
| int createWithStatement(const JSTokenLocation&, int, int, int, int, int, int) { return 1; } |
| int createDoWhileStatement(const JSTokenLocation&, int, int, int, int) { return 1; } |
| int createLabelStatement(const JSTokenLocation&, const Identifier*, int, int, int) { return 1; } |
| int createThrowStatement(const JSTokenLocation&, int, int, int, int, int) { return 1; } |
| int createDebugger(const JSTokenLocation&, int, int) { return 1; } |
| int createConstStatement(const JSTokenLocation&, int, int, int) { return 1; } |
| int appendConstDecl(const JSTokenLocation&, int, const Identifier*, int) { return 1; } |
| template <bool strict> Property createGetterOrSetterProperty(const JSTokenLocation&, PropertyNode::Type type, const Identifier* name, int, int, int, int, int, int) |
| { |
| ASSERT(name); |
| if (!strict) |
| return Property(type); |
| return Property(name, type); |
| } |
| template <bool strict> Property createGetterOrSetterProperty(JSGlobalData* globalData, const JSTokenLocation&, PropertyNode::Type type, double name, int, int, int, int, int, int) |
| { |
| if (!strict) |
| return Property(type); |
| return Property(&globalData->parserArena->identifierArena().makeNumericIdentifier(globalData, name), type); |
| } |
| |
| void appendStatement(int, int) { } |
| void addVar(const Identifier*, bool) { } |
| int combineCommaNodes(const JSTokenLocation&, int, int) { return 1; } |
| 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 operatorStackHasHigherPrecedence(int&, 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; } |
| int unaryTokenStackLastStart(int&) { return 0; } |
| void unaryTokenStackRemoveLast(int& stackDepth) { stackDepth = 0; } |
| |
| void assignmentStackAppend(int, int, int, int, int, Operator) { } |
| int createAssignment(const JSTokenLocation&, int, int, int, int, int) { ASSERT_NOT_REACHED(); return 1; } |
| const Identifier& getName(const Property& property) const { ASSERT(property.name); return *property.name; } |
| PropertyNode::Type getType(const Property& property) const { return property.type; } |
| bool isResolve(ExpressionType expr) const { return expr == ResolveExpr || expr == ResolveEvalExpr; } |
| |
| private: |
| int m_topBinaryExpr; |
| int m_topUnaryToken; |
| Vector<int, 8> m_topBinaryExprs; |
| Vector<int, 8> m_topUnaryTokens; |
| }; |
| |
| } |
| |
| #endif |
