| | 1 | /* |
| | 2 | * Copyright (C) 2010, 2013 Apple Inc. All rights reserved. |
| | 3 | * |
| | 4 | * Redistribution and use in source and binary forms, with or without |
| | 5 | * modification, are permitted provided that the following conditions |
| | 6 | * are met: |
| | 7 | * 1. Redistributions of source code must retain the above copyright |
| | 8 | * notice, this list of conditions and the following disclaimer. |
| | 9 | * 2. Redistributions in binary form must reproduce the above copyright |
| | 10 | * notice, this list of conditions and the following disclaimer in the |
| | 11 | * documentation and/or other materials provided with the distribution. |
| | 12 | * |
| | 13 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| | 14 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| | 15 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| | 16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| | 17 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| | 18 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| | 19 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| | 20 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| | 21 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| | 22 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| | 23 | * THE POSSIBILITY OF SUCH DAMAGE. |
| | 24 | */ |
| | 25 | |
| | 26 | #ifndef SyntaxChecker_h |
| | 27 | #define SyntaxChecker_h |
| | 28 | |
| | 29 | #include "Lexer.h" |
| | 30 | #include "ParserFunctionInfo.h" |
| | 31 | #include "YarrSyntaxChecker.h" |
| | 32 | |
| | 33 | namespace JSC { |
| | 34 | |
| | 35 | class SyntaxChecker { |
| | 36 | public: |
| | 37 | struct BinaryExprContext { |
| | 38 | BinaryExprContext(SyntaxChecker& context) |
| | 39 | : m_context(&context) |
| | 40 | { |
| | 41 | m_context->m_topBinaryExprs.append(m_context->m_topBinaryExpr); |
| | 42 | m_context->m_topBinaryExpr = 0; |
| | 43 | } |
| | 44 | ~BinaryExprContext() |
| | 45 | { |
| | 46 | m_context->m_topBinaryExpr = m_context->m_topBinaryExprs.last(); |
| | 47 | m_context->m_topBinaryExprs.removeLast(); |
| | 48 | } |
| | 49 | private: |
| | 50 | SyntaxChecker* m_context; |
| | 51 | }; |
| | 52 | struct UnaryExprContext { |
| | 53 | UnaryExprContext(SyntaxChecker& context) |
| | 54 | : m_context(&context) |
| | 55 | { |
| | 56 | m_context->m_topUnaryTokens.append(m_context->m_topUnaryToken); |
| | 57 | m_context->m_topUnaryToken = 0; |
| | 58 | } |
| | 59 | ~UnaryExprContext() |
| | 60 | { |
| | 61 | m_context->m_topUnaryToken = m_context->m_topUnaryTokens.last(); |
| | 62 | m_context->m_topUnaryTokens.removeLast(); |
| | 63 | } |
| | 64 | private: |
| | 65 | SyntaxChecker* m_context; |
| | 66 | }; |
| | 67 | |
| | 68 | SyntaxChecker(VM* , void*) |
| | 69 | { |
| | 70 | } |
| | 71 | |
| | 72 | typedef SyntaxChecker FunctionBodyBuilder; |
| | 73 | enum { NoneExpr = 0, |
| | 74 | ResolveEvalExpr, ResolveExpr, IntegerExpr, DoubleExpr, StringExpr, |
| | 75 | ThisExpr, NullExpr, BoolExpr, RegExpExpr, ObjectLiteralExpr, |
| | 76 | FunctionExpr, ClassExpr, SuperExpr, BracketExpr, DotExpr, CallExpr, |
| | 77 | NewExpr, PreExpr, PostExpr, UnaryExpr, BinaryExpr, |
| | 78 | ConditionalExpr, AssignmentExpr, TypeofExpr, |
| | 79 | DeleteExpr, ArrayLiteralExpr, BindingDestructuring, |
| | 80 | ArrayDestructuring, ObjectDestructuring, SourceElementsResult, |
| | 81 | FunctionBodyResult, SpreadExpr, ArgumentsResult, |
| | 82 | PropertyListResult, ArgumentsListResult, ElementsListResult, |
| | 83 | StatementResult, FormalParameterListResult, ClauseResult, |
| | 84 | ClauseListResult, CommaExpr, DestructuringAssignment, |
| | 85 | TemplateStringResult, TemplateStringListResult, |
| | 86 | TemplateExpressionListResult, TemplateExpr, |
| | 87 | TaggedTemplateExpr |
| | 88 | }; |
| | 89 | typedef int ExpressionType; |
| | 90 | |
| | 91 | typedef ExpressionType Expression; |
| | 92 | typedef int SourceElements; |
| | 93 | typedef int Arguments; |
| | 94 | typedef ExpressionType Comma; |
| | 95 | struct Property { |
| | 96 | ALWAYS_INLINE Property(void* = 0) |
| | 97 | : type((PropertyNode::Type)0) |
| | 98 | { |
| | 99 | } |
| | 100 | ALWAYS_INLINE Property(const Identifier* ident, PropertyNode::Type ty) |
| | 101 | : name(ident) |
| | 102 | , type(ty) |
| | 103 | { |
| | 104 | } |
| | 105 | ALWAYS_INLINE Property(PropertyNode::Type ty) |
| | 106 | : name(0) |
| | 107 | , type(ty) |
| | 108 | { |
| | 109 | } |
| | 110 | ALWAYS_INLINE bool operator!() { return !type; } |
| | 111 | const Identifier* name; |
| | 112 | PropertyNode::Type type; |
| | 113 | }; |
| | 114 | typedef int PropertyList; |
| | 115 | typedef int ElementList; |
| | 116 | typedef int ArgumentsList; |
| | 117 | #if ENABLE(ES6_TEMPLATE_LITERAL_SYNTAX) |
| | 118 | typedef int TemplateExpressionList; |
| | 119 | typedef int TemplateString; |
| | 120 | typedef int TemplateStringList; |
| | 121 | typedef int TemplateLiteral; |
| | 122 | #endif |
| | 123 | typedef int FormalParameterList; |
| | 124 | typedef int FunctionBody; |
| | 125 | #if ENABLE(ES6_CLASS_SYNTAX) |
| | 126 | typedef int ClassExpression; |
| | 127 | #endif |
| | 128 | typedef int Statement; |
| | 129 | typedef int ClauseList; |
| | 130 | typedef int Clause; |
| | 131 | typedef int ConstDeclList; |
| | 132 | typedef int BinaryOperand; |
| | 133 | typedef int DestructuringPattern; |
| | 134 | typedef DestructuringPattern ArrayPattern; |
| | 135 | typedef DestructuringPattern ObjectPattern; |
| | 136 | |
| | 137 | static const bool CreatesAST = false; |
| | 138 | static const bool NeedsFreeVariableInfo = false; |
| | 139 | static const bool CanUseFunctionCache = true; |
| | 140 | static const unsigned DontBuildKeywords = LexexFlagsDontBuildKeywords; |
| | 141 | static const unsigned DontBuildStrings = LexerFlagsDontBuildStrings; |
| | 142 | |
| | 143 | int createSourceElements() { return SourceElementsResult; } |
| | 144 | ExpressionType makeFunctionCallNode(const JSTokenLocation&, int, int, int, int, int) { return CallExpr; } |
| | 145 | ExpressionType createCommaExpr(const JSTokenLocation&, ExpressionType expr) { return expr; } |
| | 146 | ExpressionType appendToCommaExpr(const JSTokenLocation&, ExpressionType& head, ExpressionType, ExpressionType next) { head = next; return next; } |
| | 147 | ExpressionType makeAssignNode(const JSTokenLocation&, ExpressionType, Operator, ExpressionType, bool, bool, int, int, int) { return AssignmentExpr; } |
| | 148 | ExpressionType makePrefixNode(const JSTokenLocation&, ExpressionType, Operator, int, int, int) { return PreExpr; } |
| | 149 | ExpressionType makePostfixNode(const JSTokenLocation&, ExpressionType, Operator, int, int, int) { return PostExpr; } |
| | 150 | ExpressionType makeTypeOfNode(const JSTokenLocation&, ExpressionType) { return TypeofExpr; } |
| | 151 | ExpressionType makeDeleteNode(const JSTokenLocation&, ExpressionType, int, int, int) { return DeleteExpr; } |
| | 152 | ExpressionType makeNegateNode(const JSTokenLocation&, ExpressionType) { return UnaryExpr; } |
| | 153 | ExpressionType makeBitwiseNotNode(const JSTokenLocation&, ExpressionType) { return UnaryExpr; } |
| | 154 | ExpressionType createLogicalNot(const JSTokenLocation&, ExpressionType) { return UnaryExpr; } |
| | 155 | ExpressionType createUnaryPlus(const JSTokenLocation&, ExpressionType) { return UnaryExpr; } |
| | 156 | ExpressionType createVoid(const JSTokenLocation&, ExpressionType) { return UnaryExpr; } |
| | 157 | ExpressionType thisExpr(const JSTokenLocation&, ThisTDZMode) { return ThisExpr; } |
| | 158 | ExpressionType superExpr(const JSTokenLocation&) { return SuperExpr; } |
| | 159 | ExpressionType createResolve(const JSTokenLocation&, const Identifier*, int) { return ResolveExpr; } |
| | 160 | ExpressionType createObjectLiteral(const JSTokenLocation&) { return ObjectLiteralExpr; } |
| | 161 | ExpressionType createObjectLiteral(const JSTokenLocation&, int) { return ObjectLiteralExpr; } |
| | 162 | ExpressionType createArray(const JSTokenLocation&, int) { return ArrayLiteralExpr; } |
| | 163 | ExpressionType createArray(const JSTokenLocation&, int, int) { return ArrayLiteralExpr; } |
| | 164 | ExpressionType createDoubleExpr(const JSTokenLocation&, double) { return DoubleExpr; } |
| | 165 | ExpressionType createIntegerExpr(const JSTokenLocation&, double) { return IntegerExpr; } |
| | 166 | ExpressionType createString(const JSTokenLocation&, const Identifier*) { return StringExpr; } |
| | 167 | ExpressionType createBoolean(const JSTokenLocation&, bool) { return BoolExpr; } |
| | 168 | ExpressionType createNull(const JSTokenLocation&) { return NullExpr; } |
| | 169 | ExpressionType createBracketAccess(const JSTokenLocation&, ExpressionType, ExpressionType, bool, int, int, int) { return BracketExpr; } |
| | 170 | ExpressionType createDotAccess(const JSTokenLocation&, ExpressionType, const Identifier*, int, int, int) { return DotExpr; } |
| | 171 | ExpressionType createRegExp(const JSTokenLocation&, const Identifier& pattern, const Identifier&, int) { return Yarr::checkSyntax(pattern.string()) ? 0 : RegExpExpr; } |
| | 172 | ExpressionType createNewExpr(const JSTokenLocation&, ExpressionType, int, int, int, int) { return NewExpr; } |
| | 173 | ExpressionType createNewExpr(const JSTokenLocation&, ExpressionType, int, int) { return NewExpr; } |
| | 174 | ExpressionType createConditionalExpr(const JSTokenLocation&, ExpressionType, ExpressionType, ExpressionType) { return ConditionalExpr; } |
| | 175 | ExpressionType createAssignResolve(const JSTokenLocation&, const Identifier&, ExpressionType, int, int, int) { return AssignmentExpr; } |
| | 176 | ExpressionType createEmptyVarExpression(const JSTokenLocation&, const Identifier&) { return AssignmentExpr; } |
| | 177 | #if ENABLE(ES6_CLASS_SYNTAX) |
| | 178 | ClassExpression createClassExpr(const JSTokenLocation&, const Identifier&, ExpressionType, ExpressionType, PropertyList, PropertyList) { return ClassExpr; } |
| | 179 | #endif |
| | 180 | ExpressionType createFunctionExpr(const JSTokenLocation&, const ParserFunctionInfo<SyntaxChecker>&) { return FunctionExpr; } |
| | 181 | int createFunctionBody(const JSTokenLocation&, const JSTokenLocation&, int, int, bool, int, int, int, ConstructorKind) { return FunctionBodyResult; } |
| | 182 | #if ENABLE(ES6_ARROWFUNCTION_SYNTAX) |
| | 183 | ExpressionType createArrowFunctionExpr(const JSTokenLocation&, const ParserFunctionInfo<SyntaxChecker>&) { return FunctionExpr; } |
| | 184 | #endif |
| | 185 | void setFunctionNameStart(int, int) { } |
| | 186 | int createArguments() { return ArgumentsResult; } |
| | 187 | int createArguments(int) { return ArgumentsResult; } |
| | 188 | ExpressionType createSpreadExpression(const JSTokenLocation&, ExpressionType, int, int, int) { return SpreadExpr; } |
| | 189 | #if ENABLE(ES6_TEMPLATE_LITERAL_SYNTAX) |
| | 190 | TemplateString createTemplateString(const JSTokenLocation&, const Identifier&, const Identifier&) { return TemplateStringResult; } |
| | 191 | TemplateStringList createTemplateStringList(TemplateString) { return TemplateStringListResult; } |
| | 192 | TemplateStringList createTemplateStringList(TemplateStringList, TemplateString) { return TemplateStringListResult; } |
| | 193 | TemplateExpressionList createTemplateExpressionList(Expression) { return TemplateExpressionListResult; } |
| | 194 | TemplateExpressionList createTemplateExpressionList(TemplateExpressionList, Expression) { return TemplateExpressionListResult; } |
| | 195 | TemplateLiteral createTemplateLiteral(const JSTokenLocation&, TemplateStringList) { return TemplateExpr; } |
| | 196 | TemplateLiteral createTemplateLiteral(const JSTokenLocation&, TemplateStringList, TemplateExpressionList) { return TemplateExpr; } |
| | 197 | ExpressionType createTaggedTemplate(const JSTokenLocation&, ExpressionType, TemplateLiteral, int, int, int) { return TaggedTemplateExpr; } |
| | 198 | #endif |
| | 199 | |
| | 200 | int createArgumentsList(const JSTokenLocation&, int) { return ArgumentsListResult; } |
| | 201 | int createArgumentsList(const JSTokenLocation&, int, int) { return ArgumentsListResult; } |
| | 202 | Property createProperty(const Identifier* name, int, PropertyNode::Type type, PropertyNode::PutType, bool complete, SuperBinding = SuperBinding::NotNeeded) |
| | 203 | { |
| | 204 | if (!complete) |
| | 205 | return Property(type); |
| | 206 | ASSERT(name); |
| | 207 | return Property(name, type); |
| | 208 | } |
| | 209 | Property createProperty(VM* vm, ParserArena& parserArena, double name, int, PropertyNode::Type type, PropertyNode::PutType, bool complete) |
| | 210 | { |
| | 211 | if (!complete) |
| | 212 | return Property(type); |
| | 213 | return Property(&parserArena.identifierArena().makeNumericIdentifier(vm, name), type); |
| | 214 | } |
| | 215 | Property createProperty(int, int, PropertyNode::Type type, PropertyNode::PutType, bool) |
| | 216 | { |
| | 217 | return Property(type); |
| | 218 | } |
| | 219 | int createPropertyList(const JSTokenLocation&, Property) { return PropertyListResult; } |
| | 220 | int createPropertyList(const JSTokenLocation&, Property, int) { return PropertyListResult; } |
| | 221 | int createElementList(int, int) { return ElementsListResult; } |
| | 222 | int createElementList(int, int, int) { return ElementsListResult; } |
| | 223 | int createFormalParameterList(DestructuringPattern) { return FormalParameterListResult; } |
| | 224 | int createFormalParameterList(int, DestructuringPattern) { return FormalParameterListResult; } |
| | 225 | int createClause(int, int) { return ClauseResult; } |
| | 226 | int createClauseList(int) { return ClauseListResult; } |
| | 227 | int createClauseList(int, int) { return ClauseListResult; } |
| | 228 | int createFuncDeclStatement(const JSTokenLocation&, const ParserFunctionInfo<SyntaxChecker>&) { return StatementResult; } |
| | 229 | #if ENABLE(ES6_CLASS_SYNTAX) |
| | 230 | int createClassDeclStatement(const JSTokenLocation&, ClassExpression, |
| | 231 | const JSTextPosition&, const JSTextPosition&, int, int) { return StatementResult; } |
| | 232 | #endif |
| | 233 | int createBlockStatement(const JSTokenLocation&, int, int, int) { return StatementResult; } |
| | 234 | int createExprStatement(const JSTokenLocation&, int, int, int) { return StatementResult; } |
| | 235 | int createIfStatement(const JSTokenLocation&, int, int, int, int) { return StatementResult; } |
| | 236 | int createIfStatement(const JSTokenLocation&, int, int, int, int, int) { return StatementResult; } |
| | 237 | int createForLoop(const JSTokenLocation&, int, int, int, int, int, int) { return StatementResult; } |
| | 238 | int createForInLoop(const JSTokenLocation&, int, int, int, int, int, int, int, int) { return StatementResult; } |
| | 239 | int createForOfLoop(const JSTokenLocation&, int, int, int, int, int, int, int, int) { return StatementResult; } |
| | 240 | int createEmptyStatement(const JSTokenLocation&) { return StatementResult; } |
| | 241 | int createVarStatement(const JSTokenLocation&, int, int, int) { return StatementResult; } |
| | 242 | int createReturnStatement(const JSTokenLocation&, int, int, int) { return StatementResult; } |
| | 243 | int createBreakStatement(const JSTokenLocation&, int, int) { return StatementResult; } |
| | 244 | int createBreakStatement(const JSTokenLocation&, const Identifier*, int, int) { return StatementResult; } |
| | 245 | int createContinueStatement(const JSTokenLocation&, int, int) { return StatementResult; } |
| | 246 | int createContinueStatement(const JSTokenLocation&, const Identifier*, int, int) { return StatementResult; } |
| | 247 | int createTryStatement(const JSTokenLocation&, int, const Identifier*, int, int, int, int) { return StatementResult; } |
| | 248 | int createSwitchStatement(const JSTokenLocation&, int, int, int, int, int, int) { return StatementResult; } |
| | 249 | int createWhileStatement(const JSTokenLocation&, int, int, int, int) { return StatementResult; } |
| | 250 | int createWithStatement(const JSTokenLocation&, int, int, int, int, int, int) { return StatementResult; } |
| | 251 | int createDoWhileStatement(const JSTokenLocation&, int, int, int, int) { return StatementResult; } |
| | 252 | int createLabelStatement(const JSTokenLocation&, const Identifier*, int, int, int) { return StatementResult; } |
| | 253 | int createThrowStatement(const JSTokenLocation&, int, int, int) { return StatementResult; } |
| | 254 | int createDebugger(const JSTokenLocation&, int, int) { return StatementResult; } |
| | 255 | int createConstStatement(const JSTokenLocation&, int, int, int) { return StatementResult; } |
| | 256 | int appendConstDecl(const JSTokenLocation&, int, const Identifier*, int) { return StatementResult; } |
| | 257 | Property createGetterOrSetterProperty(const JSTokenLocation&, PropertyNode::Type type, bool strict, const Identifier* name, const ParserFunctionInfo<SyntaxChecker>&, SuperBinding) |
| | 258 | { |
| | 259 | ASSERT(name); |
| | 260 | if (!strict) |
| | 261 | return Property(type); |
| | 262 | return Property(name, type); |
| | 263 | } |
| | 264 | Property createGetterOrSetterProperty(VM* vm, ParserArena& parserArena, const JSTokenLocation&, PropertyNode::Type type, bool strict, double name, const ParserFunctionInfo<SyntaxChecker>&, SuperBinding) |
| | 265 | { |
| | 266 | if (!strict) |
| | 267 | return Property(type); |
| | 268 | return Property(&parserArena.identifierArena().makeNumericIdentifier(vm, name), type); |
| | 269 | } |
| | 270 | |
| | 271 | void appendStatement(int, int) { } |
| | 272 | void addVar(const Identifier*, bool) { } |
| | 273 | int combineCommaNodes(const JSTokenLocation&, int, int) { return CommaExpr; } |
| | 274 | int evalCount() const { return 0; } |
| | 275 | void appendBinaryExpressionInfo(int& operandStackDepth, int expr, int, int, int, bool) |
| | 276 | { |
| | 277 | if (!m_topBinaryExpr) |
| | 278 | m_topBinaryExpr = expr; |
| | 279 | else |
| | 280 | m_topBinaryExpr = BinaryExpr; |
| | 281 | operandStackDepth++; |
| | 282 | } |
| | 283 | |
| | 284 | // Logic to handle datastructures used during parsing of binary expressions |
| | 285 | void operatorStackPop(int& operatorStackDepth) { operatorStackDepth--; } |
| | 286 | bool operatorStackHasHigherPrecedence(int&, int) { return true; } |
| | 287 | BinaryOperand getFromOperandStack(int) { return m_topBinaryExpr; } |
| | 288 | void shrinkOperandStackBy(int& operandStackDepth, int amount) { operandStackDepth -= amount; } |
| | 289 | void appendBinaryOperation(const JSTokenLocation&, int& operandStackDepth, int&, BinaryOperand, BinaryOperand) { operandStackDepth++; } |
| | 290 | void operatorStackAppend(int& operatorStackDepth, int, int) { operatorStackDepth++; } |
| | 291 | int popOperandStack(int&) { int res = m_topBinaryExpr; m_topBinaryExpr = 0; return res; } |
| | 292 | |
| | 293 | void appendUnaryToken(int& stackDepth, int tok, int) { stackDepth = 1; m_topUnaryToken = tok; } |
| | 294 | int unaryTokenStackLastType(int&) { return m_topUnaryToken; } |
| | 295 | JSTextPosition unaryTokenStackLastStart(int&) { return JSTextPosition(0, 0, 0); } |
| | 296 | void unaryTokenStackRemoveLast(int& stackDepth) { stackDepth = 0; } |
| | 297 | |
| | 298 | void assignmentStackAppend(int, int, int, int, int, Operator) { } |
| | 299 | int createAssignment(const JSTokenLocation&, int, int, int, int, int) { RELEASE_ASSERT_NOT_REACHED(); return AssignmentExpr; } |
| | 300 | const Identifier* getName(const Property& property) const { return property.name; } |
| | 301 | PropertyNode::Type getType(const Property& property) const { return property.type; } |
| | 302 | bool isResolve(ExpressionType expr) const { return expr == ResolveExpr || expr == ResolveEvalExpr; } |
| | 303 | ExpressionType createDestructuringAssignment(const JSTokenLocation&, int, ExpressionType) |
| | 304 | { |
| | 305 | return DestructuringAssignment; |
| | 306 | } |
| | 307 | |
| | 308 | ArrayPattern createArrayPattern(const JSTokenLocation&) |
| | 309 | { |
| | 310 | return ArrayDestructuring; |
| | 311 | } |
| | 312 | void appendArrayPatternSkipEntry(ArrayPattern, const JSTokenLocation&) |
| | 313 | { |
| | 314 | } |
| | 315 | void appendArrayPatternEntry(ArrayPattern, const JSTokenLocation&, DestructuringPattern, int) |
| | 316 | { |
| | 317 | } |
| | 318 | void appendArrayPatternRestEntry(ArrayPattern, const JSTokenLocation&, DestructuringPattern) |
| | 319 | { |
| | 320 | } |
| | 321 | void finishArrayPattern(ArrayPattern, const JSTextPosition&, const JSTextPosition&, const JSTextPosition&) |
| | 322 | { |
| | 323 | } |
| | 324 | ObjectPattern createObjectPattern(const JSTokenLocation&) |
| | 325 | { |
| | 326 | return ObjectDestructuring; |
| | 327 | } |
| | 328 | void appendObjectPatternEntry(ArrayPattern, const JSTokenLocation&, bool, const Identifier&, DestructuringPattern, int) |
| | 329 | { |
| | 330 | } |
| | 331 | DestructuringPattern createBindingLocation(const JSTokenLocation&, const Identifier&, const JSTextPosition&, const JSTextPosition&) |
| | 332 | { |
| | 333 | return BindingDestructuring; |
| | 334 | } |
| | 335 | |
| | 336 | bool isBindingNode(DestructuringPattern pattern) |
| | 337 | { |
| | 338 | return pattern == BindingDestructuring; |
| | 339 | } |
| | 340 | |
| | 341 | void setEndOffset(int, int) { } |
| | 342 | int endOffset(int) { return 0; } |
| | 343 | void setStartOffset(int, int) { } |
| | 344 | |
| | 345 | private: |
| | 346 | int m_topBinaryExpr; |
| | 347 | int m_topUnaryToken; |
| | 348 | Vector<int, 8> m_topBinaryExprs; |
| | 349 | Vector<int, 8> m_topUnaryTokens; |
| | 350 | }; |
| | 351 | |
| | 352 | } |
| | 353 | |
| | 354 | #endif |
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