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/*
* 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 "BuiltinNames.h"
#include "BytecodeIntrinsicRegistry.h"
#include "MathCommon.h"
#include "NodeConstructors.h"
#include "SyntaxChecker.h"
#include "VariableEnvironment.h"
#include <utility>
namespace JSC {
class ASTBuilder {
struct BinaryOpInfo {
BinaryOpInfo() {}
BinaryOpInfo(const JSTextPosition& otherStart, const JSTextPosition& otherDivot, const JSTextPosition& otherEnd, bool rhsHasAssignment)
: start(otherStart)
, divot(otherDivot)
, end(otherEnd)
, hasAssignment(rhsHasAssignment)
{
}
BinaryOpInfo(const BinaryOpInfo& lhs, const BinaryOpInfo& rhs)
: start(lhs.start)
, divot(rhs.start)
, end(rhs.end)
, hasAssignment(lhs.hasAssignment || rhs.hasAssignment)
{
}
JSTextPosition start;
JSTextPosition divot;
JSTextPosition end;
bool hasAssignment;
};
struct AssignmentInfo {
AssignmentInfo() {}
AssignmentInfo(ExpressionNode* node, const JSTextPosition& start, const JSTextPosition& divot, int initAssignments, Operator op)
: m_node(node)
, m_start(start)
, m_divot(divot)
, m_initAssignments(initAssignments)
, m_op(op)
{
ASSERT(m_divot.offset >= m_divot.lineStartOffset);
ASSERT(m_start.offset >= m_start.lineStartOffset);
}
ExpressionNode* m_node;
JSTextPosition m_start;
JSTextPosition m_divot;
int m_initAssignments;
Operator m_op;
};
public:
ASTBuilder(VM& vm, ParserArena& parserArena, SourceCode* sourceCode)
: m_vm(vm)
, m_parserArena(parserArena)
, m_sourceCode(sourceCode)
, m_evalCount(0)
{
}
struct BinaryExprContext {
BinaryExprContext(ASTBuilder&) {}
};
struct UnaryExprContext {
UnaryExprContext(ASTBuilder&) {}
};
typedef ExpressionNode* Expression;
typedef JSC::SourceElements* SourceElements;
typedef ArgumentsNode* Arguments;
typedef CommaNode* Comma;
typedef PropertyNode* Property;
typedef PropertyListNode* PropertyList;
typedef ElementNode* ElementList;
typedef ArgumentListNode* ArgumentsList;
typedef TemplateExpressionListNode* TemplateExpressionList;
typedef TemplateStringNode* TemplateString;
typedef TemplateStringListNode* TemplateStringList;
typedef TemplateLiteralNode* TemplateLiteral;
typedef FunctionParameters* FormalParameterList;
typedef FunctionMetadataNode* FunctionBody;
typedef ClassExprNode* ClassExpression;
typedef ModuleNameNode* ModuleName;
typedef ImportSpecifierNode* ImportSpecifier;
typedef ImportSpecifierListNode* ImportSpecifierList;
typedef ExportSpecifierNode* ExportSpecifier;
typedef ExportSpecifierListNode* ExportSpecifierList;
typedef StatementNode* Statement;
typedef ClauseListNode* ClauseList;
typedef CaseClauseNode* Clause;
typedef std::pair<ExpressionNode*, BinaryOpInfo> BinaryOperand;
typedef DestructuringPatternNode* DestructuringPattern;
typedef ArrayPatternNode* ArrayPattern;
typedef ObjectPatternNode* ObjectPattern;
typedef BindingNode* BindingPattern;
typedef AssignmentElementNode* AssignmentElement;
static constexpr bool CreatesAST = true;
static constexpr bool NeedsFreeVariableInfo = true;
static constexpr bool CanUseFunctionCache = true;
static constexpr int DontBuildKeywords = 0;
static constexpr int DontBuildStrings = 0;
ExpressionNode* makeBinaryNode(const JSTokenLocation&, int token, std::pair<ExpressionNode*, BinaryOpInfo>, std::pair<ExpressionNode*, BinaryOpInfo>);
ExpressionNode* makeFunctionCallNode(const JSTokenLocation&, ExpressionNode* func, bool previousBaseWasSuper, ArgumentsNode* args, const JSTextPosition& divotStart, const JSTextPosition& divot, const JSTextPosition& divotEnd, size_t callOrApplyChildDepth, bool isOptionalCall);
JSC::SourceElements* createSourceElements() { return new (m_parserArena) JSC::SourceElements(); }
int features() const { return m_scope.m_features; }
int numConstants() const { return m_scope.m_numConstants; }
ExpressionNode* makeAssignNode(const JSTokenLocation&, ExpressionNode* left, Operator, ExpressionNode* right, bool leftHasAssignments, bool rightHasAssignments, const JSTextPosition& start, const JSTextPosition& divot, const JSTextPosition& end);
ExpressionNode* makePrefixNode(const JSTokenLocation&, ExpressionNode*, Operator, const JSTextPosition& start, const JSTextPosition& divot, const JSTextPosition& end);
ExpressionNode* makePostfixNode(const JSTokenLocation&, ExpressionNode*, Operator, const JSTextPosition& start, const JSTextPosition& divot, const JSTextPosition& end);
ExpressionNode* makeTypeOfNode(const JSTokenLocation&, ExpressionNode*);
ExpressionNode* makeDeleteNode(const JSTokenLocation&, ExpressionNode*, const JSTextPosition& start, const JSTextPosition& divot, const JSTextPosition& end);
ExpressionNode* makeNegateNode(const JSTokenLocation&, ExpressionNode*);
ExpressionNode* makeBitwiseNotNode(const JSTokenLocation&, ExpressionNode*);
ExpressionNode* makePowNode(const JSTokenLocation&, ExpressionNode* left, ExpressionNode* right, bool rightHasAssignments);
ExpressionNode* makeMultNode(const JSTokenLocation&, ExpressionNode* left, ExpressionNode* right, bool rightHasAssignments);
ExpressionNode* makeDivNode(const JSTokenLocation&, ExpressionNode* left, ExpressionNode* right, bool rightHasAssignments);
ExpressionNode* makeModNode(const JSTokenLocation&, ExpressionNode* left, ExpressionNode* right, bool rightHasAssignments);
ExpressionNode* makeAddNode(const JSTokenLocation&, ExpressionNode* left, ExpressionNode* right, bool rightHasAssignments);
ExpressionNode* makeSubNode(const JSTokenLocation&, ExpressionNode* left, ExpressionNode* right, bool rightHasAssignments);
ExpressionNode* makeBitXOrNode(const JSTokenLocation&, ExpressionNode* left, ExpressionNode* right, bool rightHasAssignments);
ExpressionNode* makeBitAndNode(const JSTokenLocation&, ExpressionNode* left, ExpressionNode* right, bool rightHasAssignments);
ExpressionNode* makeBitOrNode(const JSTokenLocation&, ExpressionNode* left, ExpressionNode* right, bool rightHasAssignments);
ExpressionNode* makeCoalesceNode(const JSTokenLocation&, ExpressionNode* left, ExpressionNode* right);
ExpressionNode* makeLeftShiftNode(const JSTokenLocation&, ExpressionNode* left, ExpressionNode* right, bool rightHasAssignments);
ExpressionNode* makeRightShiftNode(const JSTokenLocation&, ExpressionNode* left, ExpressionNode* right, bool rightHasAssignments);
ExpressionNode* makeURightShiftNode(const JSTokenLocation&, ExpressionNode* left, ExpressionNode* right, bool rightHasAssignments);
ExpressionNode* createLogicalNot(const JSTokenLocation& location, ExpressionNode* expr)
{
if (expr->isNumber())
return createBoolean(location, isZeroOrUnordered(static_cast<NumberNode*>(expr)->value()));
return new (m_parserArena) LogicalNotNode(location, expr);
}
ExpressionNode* createUnaryPlus(const JSTokenLocation& location, ExpressionNode* expr) { return new (m_parserArena) UnaryPlusNode(location, expr); }
ExpressionNode* createVoid(const JSTokenLocation& location, ExpressionNode* expr)
{
incConstants();
return new (m_parserArena) VoidNode(location, expr);
}
ExpressionNode* createThisExpr(const JSTokenLocation& location)
{
usesThis();
return new (m_parserArena) ThisNode(location);
}
ExpressionNode* createSuperExpr(const JSTokenLocation& location)
{
return new (m_parserArena) SuperNode(location);
}
ExpressionNode* createImportExpr(const JSTokenLocation& location, ExpressionNode* expr, const JSTextPosition& start, const JSTextPosition& divot, const JSTextPosition& end)
{
auto* node = new (m_parserArena) ImportNode(location, expr);
setExceptionLocation(node, start, divot, end);
return node;
}
ExpressionNode* createNewTargetExpr(const JSTokenLocation location)
{
usesNewTarget();
return new (m_parserArena) NewTargetNode(location);
}
ExpressionNode* createImportMetaExpr(const JSTokenLocation& location, ExpressionNode* expr) { return new (m_parserArena) ImportMetaNode(location, expr); }
bool isMetaProperty(ExpressionNode* node) { return node->isMetaProperty(); }
bool isNewTarget(ExpressionNode* node) { return node->isNewTarget(); }
bool isImportMeta(ExpressionNode* node) { return node->isImportMeta(); }
ExpressionNode* createResolve(const JSTokenLocation& location, const Identifier& ident, const JSTextPosition& start, const JSTextPosition& end)
{
if (m_vm.propertyNames->arguments == ident)
usesArguments();
if (ident.isSymbol()) {
if (BytecodeIntrinsicNode::EmitterType emitter = m_vm.bytecodeIntrinsicRegistry().lookup(ident))
return new (m_parserArena) BytecodeIntrinsicNode(BytecodeIntrinsicNode::Type::Constant, location, emitter, ident, nullptr, start, start, end);
}
return new (m_parserArena) ResolveNode(location, ident, start);
}
ExpressionNode* createObjectLiteral(const JSTokenLocation& location) { return new (m_parserArena) ObjectLiteralNode(location); }
ExpressionNode* createObjectLiteral(const JSTokenLocation& location, PropertyListNode* properties) { return new (m_parserArena) ObjectLiteralNode(location, properties); }
ExpressionNode* createArray(const JSTokenLocation& location, int elisions)
{
if (elisions)
incConstants();
return new (m_parserArena) ArrayNode(location, elisions);
}
ExpressionNode* createArray(const JSTokenLocation& location, ElementNode* elems) { return new (m_parserArena) ArrayNode(location, elems); }
ExpressionNode* createArray(const JSTokenLocation& location, int elisions, ElementNode* elems)
{
if (elisions)
incConstants();
return new (m_parserArena) ArrayNode(location, elisions, elems);
}
ExpressionNode* createDoubleExpr(const JSTokenLocation& location, double d)
{
incConstants();
return new (m_parserArena) DoubleNode(location, d);
}
ExpressionNode* createIntegerExpr(const JSTokenLocation& location, double d)
{
incConstants();
return new (m_parserArena) IntegerNode(location, d);
}
ExpressionNode* createBigInt(const JSTokenLocation& location, const Identifier* bigInt, uint8_t radix)
{
incConstants();
return new (m_parserArena) BigIntNode(location, *bigInt, radix);
}
ExpressionNode* createString(const JSTokenLocation& location, const Identifier* string)
{
ASSERT(string);
incConstants();
return new (m_parserArena) StringNode(location, *string);
}
ExpressionNode* createBoolean(const JSTokenLocation& location, bool b)
{
incConstants();
return new (m_parserArena) BooleanNode(location, b);
}
ExpressionNode* createNull(const JSTokenLocation& location)
{
incConstants();
return new (m_parserArena) NullNode(location);
}
ExpressionNode* createBracketAccess(const JSTokenLocation& location, ExpressionNode* base, ExpressionNode* property, bool propertyHasAssignments, const JSTextPosition& start, const JSTextPosition& divot, const JSTextPosition& end)
{
if (base->isSuperNode())
usesSuperProperty();
BracketAccessorNode* node = new (m_parserArena) BracketAccessorNode(location, base, property, propertyHasAssignments);
setExceptionLocation(node, start, divot, end);
return node;
}
ExpressionNode* createDotAccess(const JSTokenLocation& location, ExpressionNode* base, const Identifier* property, const JSTextPosition& start, const JSTextPosition& divot, const JSTextPosition& end)
{
if (base->isSuperNode())
usesSuperProperty();
DotAccessorNode* node = new (m_parserArena) DotAccessorNode(location, base, *property);
setExceptionLocation(node, start, divot, end);
return node;
}
ExpressionNode* createSpreadExpression(const JSTokenLocation& location, ExpressionNode* expression, const JSTextPosition& start, const JSTextPosition& divot, const JSTextPosition& end)
{
auto node = new (m_parserArena) SpreadExpressionNode(location, expression);
setExceptionLocation(node, start, divot, end);
return node;
}
ExpressionNode* createObjectSpreadExpression(const JSTokenLocation& location, ExpressionNode* expression, const JSTextPosition& start, const JSTextPosition& divot, const JSTextPosition& end)
{
auto node = new (m_parserArena) ObjectSpreadExpressionNode(location, expression);
setExceptionLocation(node, start, divot, end);
return node;
}
TemplateStringNode* createTemplateString(const JSTokenLocation& location, const Identifier* cooked, const Identifier* raw)
{
return new (m_parserArena) TemplateStringNode(location, cooked, raw);
}
TemplateStringListNode* createTemplateStringList(TemplateStringNode* templateString)
{
return new (m_parserArena) TemplateStringListNode(templateString);
}
TemplateStringListNode* createTemplateStringList(TemplateStringListNode* templateStringList, TemplateStringNode* templateString)
{
return new (m_parserArena) TemplateStringListNode(templateStringList, templateString);
}
TemplateExpressionListNode* createTemplateExpressionList(ExpressionNode* expression)
{
return new (m_parserArena) TemplateExpressionListNode(expression);
}
TemplateExpressionListNode* createTemplateExpressionList(TemplateExpressionListNode* templateExpressionListNode, ExpressionNode* expression)
{
return new (m_parserArena) TemplateExpressionListNode(templateExpressionListNode, expression);
}
TemplateLiteralNode* createTemplateLiteral(const JSTokenLocation& location, TemplateStringListNode* templateStringList)
{
return new (m_parserArena) TemplateLiteralNode(location, templateStringList);
}
TemplateLiteralNode* createTemplateLiteral(const JSTokenLocation& location, TemplateStringListNode* templateStringList, TemplateExpressionListNode* templateExpressionList)
{
return new (m_parserArena) TemplateLiteralNode(location, templateStringList, templateExpressionList);
}
ExpressionNode* createTaggedTemplate(const JSTokenLocation& location, ExpressionNode* base, TemplateLiteralNode* templateLiteral, const JSTextPosition& start, const JSTextPosition& divot, const JSTextPosition& end)
{
auto node = new (m_parserArena) TaggedTemplateNode(location, base, templateLiteral);
setExceptionLocation(node, start, divot, end);
setEndOffset(node, end.offset);
return node;
}
ExpressionNode* createRegExp(const JSTokenLocation& location, const Identifier& pattern, const Identifier& flags, const JSTextPosition& start)
{
if (Yarr::hasError(Yarr::checkSyntax(pattern.string(), flags.string())))
return 0;
RegExpNode* node = new (m_parserArena) RegExpNode(location, pattern, flags);
int size = pattern.length() + 2; // + 2 for the two /'s
JSTextPosition end = start + size;
setExceptionLocation(node, start, end, end);
return node;
}
ExpressionNode* createNewExpr(const JSTokenLocation& location, ExpressionNode* expr, ArgumentsNode* arguments, const JSTextPosition& start, const JSTextPosition& divot, const JSTextPosition& end)
{
NewExprNode* node = new (m_parserArena) NewExprNode(location, expr, arguments);
setExceptionLocation(node, start, divot, end);
return node;
}
ExpressionNode* createNewExpr(const JSTokenLocation& location, ExpressionNode* expr, const JSTextPosition& start, const JSTextPosition& end)
{
NewExprNode* node = new (m_parserArena) NewExprNode(location, expr);
setExceptionLocation(node, start, end, end);
return node;
}
ExpressionNode* createOptionalChain(const JSTokenLocation& location, ExpressionNode* base, ExpressionNode* expr, bool isOutermost)
{
base->setIsOptionalChainBase();
return new (m_parserArena) OptionalChainNode(location, expr, isOutermost);
}
ExpressionNode* createConditionalExpr(const JSTokenLocation& location, ExpressionNode* condition, ExpressionNode* lhs, ExpressionNode* rhs)
{
return new (m_parserArena) ConditionalNode(location, condition, lhs, rhs);
}
ExpressionNode* createAssignResolve(const JSTokenLocation& location, const Identifier& ident, ExpressionNode* rhs, const JSTextPosition& start, const JSTextPosition& divot, const JSTextPosition& end, AssignmentContext assignmentContext)
{
if (rhs->isBaseFuncExprNode()) {
auto metadata = static_cast<BaseFuncExprNode*>(rhs)->metadata();
metadata->setEcmaName(ident);
} else if (rhs->isClassExprNode())
static_cast<ClassExprNode*>(rhs)->setEcmaName(ident);
AssignResolveNode* node = new (m_parserArena) AssignResolveNode(location, ident, rhs, assignmentContext);
setExceptionLocation(node, start, divot, end);
return node;
}
YieldExprNode* createYield(const JSTokenLocation& location)
{
return new (m_parserArena) YieldExprNode(location, nullptr, /* delegate */ false);
}
YieldExprNode* createYield(const JSTokenLocation& location, ExpressionNode* argument, bool delegate, const JSTextPosition& start, const JSTextPosition& divot, const JSTextPosition& end)
{
YieldExprNode* node = new (m_parserArena) YieldExprNode(location, argument, delegate);
setExceptionLocation(node, start, divot, end);
return node;
}
AwaitExprNode* createAwait(const JSTokenLocation& location, ExpressionNode* argument, const JSTextPosition& start, const JSTextPosition& divot, const JSTextPosition& end)
{
ASSERT(argument);
AwaitExprNode* node = new (m_parserArena) AwaitExprNode(location, argument);
setExceptionLocation(node, start, divot, end);
return node;
}
ClassExprNode* createClassExpr(const JSTokenLocation& location, const ParserClassInfo<ASTBuilder>& classInfo, VariableEnvironment& classEnvironment, ExpressionNode* constructor,
ExpressionNode* parentClass, PropertyListNode* classElements)
{
SourceCode source = m_sourceCode->subExpression(classInfo.startOffset, classInfo.endOffset, classInfo.startLine, classInfo.startColumn);
return new (m_parserArena) ClassExprNode(location, *classInfo.className, source, classEnvironment, constructor, parentClass, classElements);
}
ExpressionNode* createFunctionExpr(const JSTokenLocation& location, const ParserFunctionInfo<ASTBuilder>& functionInfo)
{
FuncExprNode* result = new (m_parserArena) FuncExprNode(location, *functionInfo.name, functionInfo.body,
m_sourceCode->subExpression(functionInfo.startOffset, functionInfo.endOffset, functionInfo.startLine, functionInfo.parametersStartColumn));
functionInfo.body->setLoc(functionInfo.startLine, functionInfo.endLine, location.startOffset, location.lineStartOffset);
return result;
}
ExpressionNode* createGeneratorFunctionBody(const JSTokenLocation& location, const ParserFunctionInfo<ASTBuilder>& functionInfo, const Identifier& name)
{
FuncExprNode* result = static_cast<FuncExprNode*>(createFunctionExpr(location, functionInfo));
if (!name.isNull())
result->metadata()->setEcmaName(name);
return result;
}
ExpressionNode* createAsyncFunctionBody(const JSTokenLocation& location, const ParserFunctionInfo<ASTBuilder>& functionInfo, SourceParseMode parseMode)
{
if (parseMode == SourceParseMode::AsyncArrowFunctionBodyMode) {
SourceCode source = m_sourceCode->subExpression(functionInfo.startOffset, functionInfo.body->isArrowFunctionBodyExpression() ? functionInfo.endOffset - 1 : functionInfo.endOffset, functionInfo.startLine, functionInfo.parametersStartColumn);
FuncExprNode* result = new (m_parserArena) FuncExprNode(location, *functionInfo.name, functionInfo.body, source);
functionInfo.body->setLoc(functionInfo.startLine, functionInfo.endLine, location.startOffset, location.lineStartOffset);
return result;
}
return createFunctionExpr(location, functionInfo);
}
ExpressionNode* createMethodDefinition(const JSTokenLocation& location, const ParserFunctionInfo<ASTBuilder>& functionInfo)
{
MethodDefinitionNode* result = new (m_parserArena) MethodDefinitionNode(location, *functionInfo.name, functionInfo.body,
m_sourceCode->subExpression(functionInfo.startOffset, functionInfo.endOffset, functionInfo.startLine, functionInfo.parametersStartColumn));
functionInfo.body->setLoc(functionInfo.startLine, functionInfo.endLine, location.startOffset, location.lineStartOffset);
return result;
}
FunctionMetadataNode* createFunctionMetadata(
const JSTokenLocation& startLocation, const JSTokenLocation& endLocation,
unsigned startColumn, unsigned endColumn, int functionKeywordStart,
int functionNameStart, int parametersStart, bool inStrictContext,
ConstructorKind constructorKind, SuperBinding superBinding,
unsigned parameterCount,
SourceParseMode mode, bool isArrowFunctionBodyExpression)
{
return new (m_parserArena) FunctionMetadataNode(
m_parserArena, startLocation, endLocation, startColumn, endColumn,
functionKeywordStart, functionNameStart, parametersStart,
inStrictContext, constructorKind, superBinding,
parameterCount, mode, isArrowFunctionBodyExpression);
}
ExpressionNode* createArrowFunctionExpr(const JSTokenLocation& location, const ParserFunctionInfo<ASTBuilder>& functionInfo)
{
usesArrowFunction();
SourceCode source = m_sourceCode->subExpression(functionInfo.startOffset, functionInfo.body->isArrowFunctionBodyExpression() ? functionInfo.endOffset - 1 : functionInfo.endOffset, functionInfo.startLine, functionInfo.parametersStartColumn);
ArrowFuncExprNode* result = new (m_parserArena) ArrowFuncExprNode(location, *functionInfo.name, functionInfo.body, source);
functionInfo.body->setLoc(functionInfo.startLine, functionInfo.endLine, location.startOffset, location.lineStartOffset);
return result;
}
ArgumentsNode* createArguments() { return new (m_parserArena) ArgumentsNode(); }
ArgumentsNode* createArguments(ArgumentListNode* args) { return new (m_parserArena) ArgumentsNode(args); }
ArgumentListNode* createArgumentsList(const JSTokenLocation& location, ExpressionNode* arg) { return new (m_parserArena) ArgumentListNode(location, arg); }
ArgumentListNode* createArgumentsList(const JSTokenLocation& location, ArgumentListNode* args, ExpressionNode* arg) { return new (m_parserArena) ArgumentListNode(location, args, arg); }
NEVER_INLINE PropertyNode* createGetterOrSetterProperty(const JSTokenLocation& location, PropertyNode::Type type, bool,
const Identifier* name, const ParserFunctionInfo<ASTBuilder>& functionInfo, ClassElementTag tag)
{
ASSERT(name);
functionInfo.body->setLoc(functionInfo.startLine, functionInfo.endLine, location.startOffset, location.lineStartOffset);
functionInfo.body->setEcmaName(*name);
SourceCode source = m_sourceCode->subExpression(functionInfo.startOffset, functionInfo.endOffset, functionInfo.startLine, functionInfo.parametersStartColumn);
MethodDefinitionNode* methodDef = new (m_parserArena) MethodDefinitionNode(location, m_vm.propertyNames->nullIdentifier, functionInfo.body, source);
return new (m_parserArena) PropertyNode(*name, methodDef, type, PropertyNode::Unknown, SuperBinding::Needed, tag);
}
NEVER_INLINE PropertyNode* createGetterOrSetterProperty(const JSTokenLocation& location, PropertyNode::Type type, bool,
ExpressionNode* name, const ParserFunctionInfo<ASTBuilder>& functionInfo, ClassElementTag tag)
{
ASSERT(name);
functionInfo.body->setLoc(functionInfo.startLine, functionInfo.endLine, location.startOffset, location.lineStartOffset);
SourceCode source = m_sourceCode->subExpression(functionInfo.startOffset, functionInfo.endOffset, functionInfo.startLine, functionInfo.parametersStartColumn);
MethodDefinitionNode* methodDef = new (m_parserArena) MethodDefinitionNode(location, m_vm.propertyNames->nullIdentifier, functionInfo.body, source);
return new (m_parserArena) PropertyNode(name, methodDef, type, PropertyNode::Unknown, SuperBinding::Needed, tag);
}
NEVER_INLINE PropertyNode* createGetterOrSetterProperty(VM& vm, ParserArena& parserArena, const JSTokenLocation& location, PropertyNode::Type type, bool,
double name, const ParserFunctionInfo<ASTBuilder>& functionInfo, ClassElementTag tag)
{
functionInfo.body->setLoc(functionInfo.startLine, functionInfo.endLine, location.startOffset, location.lineStartOffset);
const Identifier& ident = parserArena.identifierArena().makeNumericIdentifier(vm, name);
SourceCode source = m_sourceCode->subExpression(functionInfo.startOffset, functionInfo.endOffset, functionInfo.startLine, functionInfo.parametersStartColumn);
MethodDefinitionNode* methodDef = new (m_parserArena) MethodDefinitionNode(location, vm.propertyNames->nullIdentifier, functionInfo.body, source);
return new (m_parserArena) PropertyNode(ident, methodDef, type, PropertyNode::Unknown, SuperBinding::Needed, tag);
}
PropertyNode* createProperty(const Identifier* propertyName, ExpressionNode* node, PropertyNode::Type type, PropertyNode::PutType putType, bool, SuperBinding superBinding, InferName inferName, ClassElementTag tag)
{
if (inferName == InferName::Allowed) {
if (node->isBaseFuncExprNode()) {
auto metadata = static_cast<BaseFuncExprNode*>(node)->metadata();
metadata->setEcmaName(*propertyName);
} else if (node->isClassExprNode())
static_cast<ClassExprNode*>(node)->setEcmaName(*propertyName);
}
return new (m_parserArena) PropertyNode(*propertyName, node, type, putType, superBinding, tag);
}
PropertyNode* createProperty(ExpressionNode* node, PropertyNode::Type type, PropertyNode::PutType putType, bool, SuperBinding superBinding, ClassElementTag tag)
{
return new (m_parserArena) PropertyNode(node, type, putType, superBinding, tag);
}
PropertyNode* createProperty(VM& vm, ParserArena& parserArena, double propertyName, ExpressionNode* node, PropertyNode::Type type, PropertyNode::PutType putType, bool, SuperBinding superBinding, ClassElementTag tag)
{
return new (m_parserArena) PropertyNode(parserArena.identifierArena().makeNumericIdentifier(vm, propertyName), node, type, putType, superBinding, tag);
}
PropertyNode* createProperty(ExpressionNode* propertyName, ExpressionNode* node, PropertyNode::Type type, PropertyNode::PutType putType, bool, SuperBinding superBinding, ClassElementTag tag) { return new (m_parserArena) PropertyNode(propertyName, node, type, putType, superBinding, tag); }
PropertyListNode* createPropertyList(const JSTokenLocation& location, PropertyNode* property) { return new (m_parserArena) PropertyListNode(location, property); }
PropertyListNode* createPropertyList(const JSTokenLocation& location, PropertyNode* property, PropertyListNode* tail) { return new (m_parserArena) PropertyListNode(location, property, tail); }
ElementNode* createElementList(int elisions, ExpressionNode* expr) { return new (m_parserArena) ElementNode(elisions, expr); }
ElementNode* createElementList(ElementNode* elems, int elisions, ExpressionNode* expr) { return new (m_parserArena) ElementNode(elems, elisions, expr); }
ElementNode* createElementList(ArgumentListNode* elems)
{
ElementNode* head = new (m_parserArena) ElementNode(0, elems->m_expr);
ElementNode* tail = head;
elems = elems->m_next;
while (elems) {
tail = new (m_parserArena) ElementNode(tail, 0, elems->m_expr);
elems = elems->m_next;
}
return head;
}
FormalParameterList createFormalParameterList() { return new (m_parserArena) FunctionParameters(); }
void appendParameter(FormalParameterList list, DestructuringPattern pattern, ExpressionNode* defaultValue)
{
list->append(pattern, defaultValue);
tryInferNameInPattern(pattern, defaultValue);
}
CaseClauseNode* createClause(ExpressionNode* expr, JSC::SourceElements* statements) { return new (m_parserArena) CaseClauseNode(expr, statements); }
ClauseListNode* createClauseList(CaseClauseNode* clause) { return new (m_parserArena) ClauseListNode(clause); }
ClauseListNode* createClauseList(ClauseListNode* tail, CaseClauseNode* clause) { return new (m_parserArena) ClauseListNode(tail, clause); }
StatementNode* createFuncDeclStatement(const JSTokenLocation& location, const ParserFunctionInfo<ASTBuilder>& functionInfo)
{
FuncDeclNode* decl = new (m_parserArena) FuncDeclNode(location, *functionInfo.name, functionInfo.body,
m_sourceCode->subExpression(functionInfo.startOffset, functionInfo.endOffset, functionInfo.startLine, functionInfo.parametersStartColumn));
if (*functionInfo.name == m_vm.propertyNames->arguments)
usesArguments();
functionInfo.body->setLoc(functionInfo.startLine, functionInfo.endLine, location.startOffset, location.lineStartOffset);
return decl;
}
StatementNode* createClassDeclStatement(const JSTokenLocation& location, ClassExprNode* classExpression,
const JSTextPosition& classStart, const JSTextPosition& classEnd, unsigned startLine, unsigned endLine)
{
ExpressionNode* assign = createAssignResolve(location, classExpression->name(), classExpression, classStart, classStart + 1, classEnd, AssignmentContext::DeclarationStatement);
ClassDeclNode* decl = new (m_parserArena) ClassDeclNode(location, assign);
decl->setLoc(startLine, endLine, location.startOffset, location.lineStartOffset);
return decl;
}
StatementNode* createBlockStatement(const JSTokenLocation& location, JSC::SourceElements* elements, int startLine, int endLine, VariableEnvironment& lexicalVariables, DeclarationStacks::FunctionStack&& functionStack)
{
BlockNode* block = new (m_parserArena) BlockNode(location, elements, lexicalVariables, WTFMove(functionStack));
block->setLoc(startLine, endLine, location.startOffset, location.lineStartOffset);
return block;
}
StatementNode* createExprStatement(const JSTokenLocation& location, ExpressionNode* expr, const JSTextPosition& start, int end)
{
ExprStatementNode* result = new (m_parserArena) ExprStatementNode(location, expr);
result->setLoc(start.line, end, start.offset, start.lineStartOffset);
return result;
}
StatementNode* createIfStatement(const JSTokenLocation& location, ExpressionNode* condition, StatementNode* trueBlock, StatementNode* falseBlock, int start, int end)
{
IfElseNode* result = new (m_parserArena) IfElseNode(location, condition, trueBlock, falseBlock);
result->setLoc(start, end, location.startOffset, location.lineStartOffset);
return result;
}
StatementNode* createForLoop(const JSTokenLocation& location, ExpressionNode* initializer, ExpressionNode* condition, ExpressionNode* iter, StatementNode* statements, int start, int end, VariableEnvironment& lexicalVariables)
{
ForNode* result = new (m_parserArena) ForNode(location, initializer, condition, iter, statements, lexicalVariables);
result->setLoc(start, end, location.startOffset, location.lineStartOffset);
return result;
}
StatementNode* createForInLoop(const JSTokenLocation& location, ExpressionNode* lhs, ExpressionNode* iter, StatementNode* statements, const JSTokenLocation&, const JSTextPosition& eStart, const JSTextPosition& eDivot, const JSTextPosition& eEnd, int start, int end, VariableEnvironment& lexicalVariables)
{
ForInNode* result = new (m_parserArena) ForInNode(location, lhs, iter, statements, lexicalVariables);
result->setLoc(start, end, location.startOffset, location.lineStartOffset);
setExceptionLocation(result, eStart, eDivot, eEnd);
return result;
}
StatementNode* createForInLoop(const JSTokenLocation& location, DestructuringPatternNode* pattern, ExpressionNode* iter, StatementNode* statements, const JSTokenLocation& declLocation, const JSTextPosition& eStart, const JSTextPosition& eDivot, const JSTextPosition& eEnd, int start, int end, VariableEnvironment& lexicalVariables)
{
auto lexpr = new (m_parserArena) DestructuringAssignmentNode(declLocation, pattern, nullptr);
return createForInLoop(location, lexpr, iter, statements, declLocation, eStart, eDivot, eEnd, start, end, lexicalVariables);
}
StatementNode* createForOfLoop(bool isForAwait, const JSTokenLocation& location, ExpressionNode* lhs, ExpressionNode* iter, StatementNode* statements, const JSTokenLocation&, const JSTextPosition& eStart, const JSTextPosition& eDivot, const JSTextPosition& eEnd, int start, int end, VariableEnvironment& lexicalVariables)
{
ForOfNode* result = new (m_parserArena) ForOfNode(isForAwait, location, lhs, iter, statements, lexicalVariables);
result->setLoc(start, end, location.startOffset, location.lineStartOffset);
setExceptionLocation(result, eStart, eDivot, eEnd);
return result;
}
StatementNode* createForOfLoop(bool isForAwait, const JSTokenLocation& location, DestructuringPatternNode* pattern, ExpressionNode* iter, StatementNode* statements, const JSTokenLocation& declLocation, const JSTextPosition& eStart, const JSTextPosition& eDivot, const JSTextPosition& eEnd, int start, int end, VariableEnvironment& lexicalVariables)
{
auto lexpr = new (m_parserArena) DestructuringAssignmentNode(declLocation, pattern, nullptr);
return createForOfLoop(isForAwait, location, lexpr, iter, statements, declLocation, eStart, eDivot, eEnd, start, end, lexicalVariables);
}
bool isBindingNode(const DestructuringPattern& pattern)
{
return pattern->isBindingNode();
}
bool isLocation(const Expression& node)
{
return node->isLocation();
}
bool isAssignmentLocation(const Expression& node)
{
return node->isAssignmentLocation();
}
bool isObjectLiteral(const Expression& node)
{
return node->isObjectLiteral();
}
bool isArrayLiteral(const Expression& node)
{
return node->isArrayLiteral();
}
bool isObjectOrArrayLiteral(const Expression& node)
{
return isObjectLiteral(node) || isArrayLiteral(node);
}
bool isFunctionCall(const Expression& node)
{
return node->isFunctionCall();
}
bool shouldSkipPauseLocation(StatementNode* statement) const
{
return !statement || statement->isLabel();
}
StatementNode* createEmptyStatement(const JSTokenLocation& location) { return new (m_parserArena) EmptyStatementNode(location); }
StatementNode* createDeclarationStatement(const JSTokenLocation& location, ExpressionNode* expr, int start, int end)
{
StatementNode* result;
result = new (m_parserArena) DeclarationStatement(location, expr);
result->setLoc(start, end, location.startOffset, location.lineStartOffset);
return result;
}
ExpressionNode* createEmptyVarExpression(const JSTokenLocation& location, const Identifier& identifier)
{
return new (m_parserArena) EmptyVarExpression(location, identifier);
}
ExpressionNode* createEmptyLetExpression(const JSTokenLocation& location, const Identifier& identifier)
{
return new (m_parserArena) EmptyLetExpression(location, identifier);
}
StatementNode* createReturnStatement(const JSTokenLocation& location, ExpressionNode* expression, const JSTextPosition& start, const JSTextPosition& end)
{
ReturnNode* result = new (m_parserArena) ReturnNode(location, expression);
setExceptionLocation(result, start, end, end);
result->setLoc(start.line, end.line, start.offset, start.lineStartOffset);
return result;
}
StatementNode* createBreakStatement(const JSTokenLocation& location, const Identifier* ident, const JSTextPosition& start, const JSTextPosition& end)
{
BreakNode* result = new (m_parserArena) BreakNode(location, *ident);
setExceptionLocation(result, start, end, end);
result->setLoc(start.line, end.line, start.offset, start.lineStartOffset);
return result;
}
StatementNode* createContinueStatement(const JSTokenLocation& location, const Identifier* ident, const JSTextPosition& start, const JSTextPosition& end)
{
ContinueNode* result = new (m_parserArena) ContinueNode(location, *ident);
setExceptionLocation(result, start, end, end);
result->setLoc(start.line, end.line, start.offset, start.lineStartOffset);
return result;
}
StatementNode* createTryStatement(const JSTokenLocation& location, StatementNode* tryBlock, DestructuringPatternNode* catchPattern, StatementNode* catchBlock, StatementNode* finallyBlock, int startLine, int endLine, VariableEnvironment& catchEnvironment)
{
TryNode* result = new (m_parserArena) TryNode(location, tryBlock, catchPattern, catchBlock, catchEnvironment, finallyBlock);
result->setLoc(startLine, endLine, location.startOffset, location.lineStartOffset);
return result;
}
StatementNode* createSwitchStatement(const JSTokenLocation& location, ExpressionNode* expr, ClauseListNode* firstClauses, CaseClauseNode* defaultClause, ClauseListNode* secondClauses, int startLine, int endLine, VariableEnvironment& lexicalVariables, DeclarationStacks::FunctionStack&& functionStack)
{
CaseBlockNode* cases = new (m_parserArena) CaseBlockNode(firstClauses, defaultClause, secondClauses);
SwitchNode* result = new (m_parserArena) SwitchNode(location, expr, cases, lexicalVariables, WTFMove(functionStack));
result->setLoc(startLine, endLine, location.startOffset, location.lineStartOffset);
return result;
}
StatementNode* createWhileStatement(const JSTokenLocation& location, ExpressionNode* expr, StatementNode* statement, int startLine, int endLine)
{
WhileNode* result = new (m_parserArena) WhileNode(location, expr, statement);
result->setLoc(startLine, endLine, location.startOffset, location.lineStartOffset);
return result;
}
StatementNode* createDoWhileStatement(const JSTokenLocation& location, StatementNode* statement, ExpressionNode* expr, int startLine, int endLine)
{
DoWhileNode* result = new (m_parserArena) DoWhileNode(location, statement, expr);
result->setLoc(startLine, endLine, location.startOffset, location.lineStartOffset);
return result;
}
StatementNode* createLabelStatement(const JSTokenLocation& location, const Identifier* ident, StatementNode* statement, const JSTextPosition& start, const JSTextPosition& end)
{
LabelNode* result = new (m_parserArena) LabelNode(location, *ident, statement);
setExceptionLocation(result, start, end, end);
return result;
}
StatementNode* createWithStatement(const JSTokenLocation& location, ExpressionNode* expr, StatementNode* statement, unsigned start, const JSTextPosition& end, unsigned startLine, unsigned endLine)
{
usesWith();
WithNode* result = new (m_parserArena) WithNode(location, expr, statement, end, end - start);
result->setLoc(startLine, endLine, location.startOffset, location.lineStartOffset);
return result;
}
StatementNode* createThrowStatement(const JSTokenLocation& location, ExpressionNode* expr, const JSTextPosition& start, const JSTextPosition& end)
{
ThrowNode* result = new (m_parserArena) ThrowNode(location, expr);
result->setLoc(start.line, end.line, start.offset, start.lineStartOffset);
setExceptionLocation(result, start, end, end);
return result;
}
StatementNode* createDebugger(const JSTokenLocation& location, int startLine, int endLine)
{
DebuggerStatementNode* result = new (m_parserArena) DebuggerStatementNode(location);
result->setLoc(startLine, endLine, location.startOffset, location.lineStartOffset);
return result;
}
ModuleNameNode* createModuleName(const JSTokenLocation& location, const Identifier& moduleName)
{
return new (m_parserArena) ModuleNameNode(location, moduleName);
}
ImportSpecifierNode* createImportSpecifier(const JSTokenLocation& location, const Identifier& importedName, const Identifier& localName)
{
return new (m_parserArena) ImportSpecifierNode(location, importedName, localName);
}
ImportSpecifierListNode* createImportSpecifierList()
{
return new (m_parserArena) ImportSpecifierListNode();
}
void appendImportSpecifier(ImportSpecifierListNode* specifierList, ImportSpecifierNode* specifier)
{
specifierList->append(specifier);
}
StatementNode* createImportDeclaration(const JSTokenLocation& location, ImportSpecifierListNode* importSpecifierList, ModuleNameNode* moduleName)
{
return new (m_parserArena) ImportDeclarationNode(location, importSpecifierList, moduleName);
}
StatementNode* createExportAllDeclaration(const JSTokenLocation& location, ModuleNameNode* moduleName)
{
return new (m_parserArena) ExportAllDeclarationNode(location, moduleName);
}
StatementNode* createExportDefaultDeclaration(const JSTokenLocation& location, StatementNode* declaration, const Identifier& localName)
{
return new (m_parserArena) ExportDefaultDeclarationNode(location, declaration, localName);
}
StatementNode* createExportLocalDeclaration(const JSTokenLocation& location, StatementNode* declaration)
{
return new (m_parserArena) ExportLocalDeclarationNode(location, declaration);
}
StatementNode* createExportNamedDeclaration(const JSTokenLocation& location, ExportSpecifierListNode* exportSpecifierList, ModuleNameNode* moduleName)
{
return new (m_parserArena) ExportNamedDeclarationNode(location, exportSpecifierList, moduleName);
}
ExportSpecifierNode* createExportSpecifier(const JSTokenLocation& location, const Identifier& localName, const Identifier& exportedName)
{
return new (m_parserArena) ExportSpecifierNode(location, localName, exportedName);
}
ExportSpecifierListNode* createExportSpecifierList()
{
return new (m_parserArena) ExportSpecifierListNode();
}
void appendExportSpecifier(ExportSpecifierListNode* specifierList, ExportSpecifierNode* specifier)
{
specifierList->append(specifier);
}
void appendStatement(JSC::SourceElements* elements, JSC::StatementNode* statement)
{
elements->append(statement);
}
CommaNode* createCommaExpr(const JSTokenLocation& location, ExpressionNode* node)
{
return new (m_parserArena) CommaNode(location, node);
}
CommaNode* appendToCommaExpr(const JSTokenLocation& location, ExpressionNode*, ExpressionNode* tail, ExpressionNode* next)
{
ASSERT(tail->isCommaNode());
ASSERT(next);
CommaNode* newTail = new (m_parserArena) CommaNode(location, next);
static_cast<CommaNode*>(tail)->setNext(newTail);
return newTail;
}
int evalCount() const { return m_evalCount; }
void appendBinaryExpressionInfo(int& operandStackDepth, ExpressionNode* current, const JSTextPosition& exprStart, const JSTextPosition& lhs, const JSTextPosition& rhs, bool hasAssignments)
{
operandStackDepth++;
m_binaryOperandStack.append(std::make_pair(current, BinaryOpInfo(exprStart, lhs, rhs, hasAssignments)));
}
// Logic to handle datastructures used during parsing of binary expressions
void operatorStackPop(int& operatorStackDepth)
{
operatorStackDepth--;
m_binaryOperatorStack.removeLast();
}
bool operatorStackShouldReduce(int precedence)
{
// If the current precedence of the operator stack is the same to the one of the given operator,
// it depends on the associative whether we reduce the stack.
// If the operator is right associative, we should not reduce the stack right now.
if (precedence == m_binaryOperatorStack.last().second)
return !(m_binaryOperatorStack.last().first & RightAssociativeBinaryOpTokenFlag);
return precedence < m_binaryOperatorStack.last().second;
}
const BinaryOperand& getFromOperandStack(int i) { return m_binaryOperandStack[m_binaryOperandStack.size() + i]; }
void shrinkOperandStackBy(int& operandStackDepth, int amount)
{
operandStackDepth -= amount;
ASSERT(operandStackDepth >= 0);
m_binaryOperandStack.shrink(m_binaryOperandStack.size() - amount);
}
void appendBinaryOperation(const JSTokenLocation& location, int& operandStackDepth, int&, const BinaryOperand& lhs, const BinaryOperand& rhs)
{
operandStackDepth++;
m_binaryOperandStack.append(std::make_pair(makeBinaryNode(location, m_binaryOperatorStack.last().first, lhs, rhs), BinaryOpInfo(lhs.second, rhs.second)));
}
void operatorStackAppend(int& operatorStackDepth, int op, int precedence)
{
operatorStackDepth++;
m_binaryOperatorStack.append(std::make_pair(op, precedence));
}
ExpressionNode* popOperandStack(int&)
{
ExpressionNode* result = m_binaryOperandStack.last().first;
m_binaryOperandStack.removeLast();
return result;
}
void appendUnaryToken(int& tokenStackDepth, int type, const JSTextPosition& start)
{
tokenStackDepth++;
m_unaryTokenStack.append(std::make_pair(type, start));
}
int unaryTokenStackLastType(int&)
{
return m_unaryTokenStack.last().first;
}
const JSTextPosition& unaryTokenStackLastStart(int&)
{
return m_unaryTokenStack.last().second;
}
void unaryTokenStackRemoveLast(int& tokenStackDepth)
{
tokenStackDepth--;
m_unaryTokenStack.removeLast();
}
void assignmentStackAppend(int& assignmentStackDepth, ExpressionNode* node, const JSTextPosition& start, const JSTextPosition& divot, int assignmentCount, Operator op)
{
assignmentStackDepth++;
ASSERT(start.offset >= start.lineStartOffset);
ASSERT(divot.offset >= divot.lineStartOffset);
m_assignmentInfoStack.append(AssignmentInfo(node, start, divot, assignmentCount, op));
}
ExpressionNode* createAssignment(const JSTokenLocation& location, int& assignmentStackDepth, ExpressionNode* rhs, int initialAssignmentCount, int currentAssignmentCount, const JSTextPosition& lastTokenEnd)
{
AssignmentInfo& info = m_assignmentInfoStack.last();
ExpressionNode* result = makeAssignNode(location, info.m_node, info.m_op, rhs, info.m_initAssignments != initialAssignmentCount, info.m_initAssignments != currentAssignmentCount, info.m_start, info.m_divot + 1, lastTokenEnd);
m_assignmentInfoStack.removeLast();
assignmentStackDepth--;
return result;
}
const Identifier* getName(const Property& property) const { return property->name(); }
PropertyNode::Type getType(const Property& property) const { return property->type(); }
bool isResolve(ExpressionNode* expr) const { return expr->isResolveNode(); }
ExpressionNode* createDestructuringAssignment(const JSTokenLocation& location, DestructuringPattern pattern, ExpressionNode* initializer)
{
return new (m_parserArena) DestructuringAssignmentNode(location, pattern, initializer);
}
ArrayPattern createArrayPattern(const JSTokenLocation&)
{
return new (m_parserArena) ArrayPatternNode();
}
void appendArrayPatternSkipEntry(ArrayPattern node, const JSTokenLocation& location)
{
node->appendIndex(ArrayPatternNode::BindingType::Elision, location, 0, nullptr);
}
void appendArrayPatternEntry(ArrayPattern node, const JSTokenLocation& location, DestructuringPattern pattern, ExpressionNode* defaultValue)
{
node->appendIndex(ArrayPatternNode::BindingType::Element, location, pattern, defaultValue);
tryInferNameInPattern(pattern, defaultValue);
}
void appendArrayPatternRestEntry(ArrayPattern node, const JSTokenLocation& location, DestructuringPattern pattern)
{
node->appendIndex(ArrayPatternNode::BindingType::RestElement, location, pattern, nullptr);
}
void finishArrayPattern(ArrayPattern node, const JSTextPosition& divotStart, const JSTextPosition& divot, const JSTextPosition& divotEnd)
{
setExceptionLocation(node, divotStart, divot, divotEnd);
}
ObjectPattern createObjectPattern(const JSTokenLocation&)
{
return new (m_parserArena) ObjectPatternNode();
}
void appendObjectPatternEntry(ObjectPattern node, const JSTokenLocation& location, bool wasString, const Identifier& identifier, DestructuringPattern pattern, ExpressionNode* defaultValue)
{
node->appendEntry(location, identifier, wasString, pattern, defaultValue, ObjectPatternNode::BindingType::Element);
tryInferNameInPattern(pattern, defaultValue);
}
void appendObjectPatternEntry(VM& vm, ObjectPattern node, const JSTokenLocation& location, ExpressionNode* propertyExpression, DestructuringPattern pattern, ExpressionNode* defaultValue)
{
node->appendEntry(vm, location, propertyExpression, pattern, defaultValue, ObjectPatternNode::BindingType::Element);
tryInferNameInPattern(pattern, defaultValue);
}
void appendObjectPatternRestEntry(VM& vm, ObjectPattern node, const JSTokenLocation& location, DestructuringPattern pattern)
{
node->appendEntry(vm, location, nullptr, pattern, nullptr, ObjectPatternNode::BindingType::RestElement);
}
void setContainsObjectRestElement(ObjectPattern node, bool containsRestElement)
{
node->setContainsRestElement(containsRestElement);
}
void setContainsComputedProperty(ObjectPattern node, bool containsComputedProperty)
{
node->setContainsComputedProperty(containsComputedProperty);
}
BindingPattern createBindingLocation(const JSTokenLocation&, const Identifier& boundProperty, const JSTextPosition& start, const JSTextPosition& end, AssignmentContext context)
{
return new (m_parserArena) BindingNode(boundProperty, start, end, context);
}
RestParameterNode* createRestParameter(DestructuringPatternNode* pattern, size_t numParametersToSkip)
{
return new (m_parserArena) RestParameterNode(pattern, numParametersToSkip);
}
AssignmentElement createAssignmentElement(const Expression& assignmentTarget, const JSTextPosition& start, const JSTextPosition& end)
{
return new (m_parserArena) AssignmentElementNode(assignmentTarget, start, end);
}
void setEndOffset(Node* node, int offset)
{
node->setEndOffset(offset);
}
int endOffset(Node* node)
{
return node->endOffset();
}
void setStartOffset(CaseClauseNode* node, int offset)
{
node->setStartOffset(offset);
}
void setStartOffset(Node* node, int offset)
{
node->setStartOffset(offset);
}
JSTextPosition breakpointLocation(Node* node)
{
node->setNeedsDebugHook();
return node->position();
}
void propagateArgumentsUse() { usesArguments(); }
private:
struct Scope {
Scope()
: m_features(0)
, m_numConstants(0)
{
}
int m_features;
int m_numConstants;
};
static void setExceptionLocation(ThrowableExpressionData* node, const JSTextPosition& divotStart, const JSTextPosition& divot, const JSTextPosition& divotEnd)
{
ASSERT(divot.offset >= divot.lineStartOffset);
node->setExceptionSourceCode(divot, divotStart, divotEnd);
}
void incConstants() { m_scope.m_numConstants++; }
void usesThis() { m_scope.m_features |= ThisFeature; }
void usesArrowFunction() { m_scope.m_features |= ArrowFunctionFeature; }
void usesArguments() { m_scope.m_features |= ArgumentsFeature; }
void usesWith() { m_scope.m_features |= WithFeature; }
void usesSuperCall() { m_scope.m_features |= SuperCallFeature; }
void usesSuperProperty() { m_scope.m_features |= SuperPropertyFeature; }
void usesEval()
{
m_evalCount++;
m_scope.m_features |= EvalFeature;
}
void usesNewTarget() { m_scope.m_features |= NewTargetFeature; }
ExpressionNode* createIntegerLikeNumber(const JSTokenLocation& location, double d)
{
return new (m_parserArena) IntegerNode(location, d);
}
ExpressionNode* createDoubleLikeNumber(const JSTokenLocation& location, double d)
{
return new (m_parserArena) DoubleNode(location, d);
}
ExpressionNode* createBigIntWithSign(const JSTokenLocation& location, const Identifier& bigInt, uint8_t radix, bool sign)
{
return new (m_parserArena) BigIntNode(location, bigInt, radix, sign);
}
ExpressionNode* createNumberFromBinaryOperation(const JSTokenLocation& location, double value, const NumberNode& originalNodeA, const NumberNode& originalNodeB)
{
if (originalNodeA.isIntegerNode() && originalNodeB.isIntegerNode())
return createIntegerLikeNumber(location, value);
return createDoubleLikeNumber(location, value);
}
ExpressionNode* createNumberFromUnaryOperation(const JSTokenLocation& location, double value, const NumberNode& originalNode)
{
if (originalNode.isIntegerNode())
return createIntegerLikeNumber(location, value);
return createDoubleLikeNumber(location, value);
}
ExpressionNode* createBigIntFromUnaryOperation(const JSTokenLocation& location, bool sign, const BigIntNode& originalNode)
{
return createBigIntWithSign(location, originalNode.identifier(), originalNode.radix(), sign);
}
void tryInferNameInPattern(DestructuringPattern pattern, ExpressionNode* defaultValue)
{
if (!defaultValue)
return;
if (pattern->isBindingNode()) {
const Identifier& ident = static_cast<BindingNode*>(pattern)->boundProperty();
tryInferNameInPatternWithIdentifier(ident, defaultValue);
} else if (pattern->isAssignmentElementNode()) {
const ExpressionNode* assignmentTarget = static_cast<AssignmentElementNode*>(pattern)->assignmentTarget();
if (assignmentTarget->isResolveNode()) {
const Identifier& ident = static_cast<const ResolveNode*>(assignmentTarget)->identifier();
tryInferNameInPatternWithIdentifier(ident, defaultValue);
}
}
}
void tryInferNameInPatternWithIdentifier(const Identifier& ident, ExpressionNode* defaultValue)
{
if (defaultValue->isBaseFuncExprNode()) {
auto metadata = static_cast<BaseFuncExprNode*>(defaultValue)->metadata();
metadata->setEcmaName(ident);
} else if (defaultValue->isClassExprNode())
static_cast<ClassExprNode*>(defaultValue)->setEcmaName(ident);
}
VM& m_vm;
ParserArena& m_parserArena;
SourceCode* m_sourceCode;
Scope m_scope;
Vector<BinaryOperand, 10, UnsafeVectorOverflow> m_binaryOperandStack;
Vector<AssignmentInfo, 10, UnsafeVectorOverflow> m_assignmentInfoStack;
Vector<std::pair<int, int>, 10, UnsafeVectorOverflow> m_binaryOperatorStack;
Vector<std::pair<int, JSTextPosition>, 10, UnsafeVectorOverflow> m_unaryTokenStack;
int m_evalCount;
};
ExpressionNode* ASTBuilder::makeTypeOfNode(const JSTokenLocation& location, ExpressionNode* expr)
{
if (expr->isResolveNode()) {
ResolveNode* resolve = static_cast<ResolveNode*>(expr);
return new (m_parserArena) TypeOfResolveNode(location, resolve->identifier());
}
return new (m_parserArena) TypeOfValueNode(location, expr);
}
ExpressionNode* ASTBuilder::makeDeleteNode(const JSTokenLocation& location, ExpressionNode* expr, const JSTextPosition& start, const JSTextPosition& divot, const JSTextPosition& end)
{
if (expr->isOptionalChain()) {
OptionalChainNode* optionalChain = static_cast<OptionalChainNode*>(expr);
if (optionalChain->expr()->isLocation()) {
ASSERT(!optionalChain->expr()->isResolveNode());
optionalChain->setExpr(makeDeleteNode(location, optionalChain->expr(), start, divot, end));
return optionalChain;
}
}
if (!expr->isLocation())
return new (m_parserArena) DeleteValueNode(location, expr);
if (expr->isResolveNode()) {
ResolveNode* resolve = static_cast<ResolveNode*>(expr);
return new (m_parserArena) DeleteResolveNode(location, resolve->identifier(), divot, start, end);
}
if (expr->isBracketAccessorNode()) {
BracketAccessorNode* bracket = static_cast<BracketAccessorNode*>(expr);
return new (m_parserArena) DeleteBracketNode(location, bracket->base(), bracket->subscript(), divot, start, end);
}
ASSERT(expr->isDotAccessorNode());
DotAccessorNode* dot = static_cast<DotAccessorNode*>(expr);
return new (m_parserArena) DeleteDotNode(location, dot->base(), dot->identifier(), divot, start, end);
}
ExpressionNode* ASTBuilder::makeNegateNode(const JSTokenLocation& location, ExpressionNode* n)
{
if (n->isNumber()) {
const NumberNode& numberNode = static_cast<const NumberNode&>(*n);
return createNumberFromUnaryOperation(location, -numberNode.value(), numberNode);
}
if (n->isBigInt()) {
const BigIntNode& bigIntNode = static_cast<const BigIntNode&>(*n);
return createBigIntFromUnaryOperation(location, !bigIntNode.sign(), bigIntNode);
}
return new (m_parserArena) NegateNode(location, n);
}
ExpressionNode* ASTBuilder::makeBitwiseNotNode(const JSTokenLocation& location, ExpressionNode* expr)
{
if (expr->isNumber())
return createIntegerLikeNumber(location, ~toInt32(static_cast<NumberNode*>(expr)->value()));
return new (m_parserArena) BitwiseNotNode(location, expr);
}
ExpressionNode* ASTBuilder::makePowNode(const JSTokenLocation& location, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments)
{
auto* strippedExpr1 = expr1->stripUnaryPlus();
auto* strippedExpr2 = expr2->stripUnaryPlus();
if (strippedExpr1->isNumber() && strippedExpr2->isNumber()) {
const NumberNode& numberExpr1 = static_cast<NumberNode&>(*strippedExpr1);
const NumberNode& numberExpr2 = static_cast<NumberNode&>(*strippedExpr2);
return createNumberFromBinaryOperation(location, operationMathPow(numberExpr1.value(), numberExpr2.value()), numberExpr1, numberExpr2);
}
if (strippedExpr1->isNumber())
expr1 = strippedExpr1;
if (strippedExpr2->isNumber())
expr2 = strippedExpr2;
return new (m_parserArena) PowNode(location, expr1, expr2, rightHasAssignments);
}
ExpressionNode* ASTBuilder::makeMultNode(const JSTokenLocation& location, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments)
{
// FIXME: Unary + change the evaluation order.
// https://bugs.webkit.org/show_bug.cgi?id=159968
expr1 = expr1->stripUnaryPlus();
expr2 = expr2->stripUnaryPlus();
if (expr1->isNumber() && expr2->isNumber()) {
const NumberNode& numberExpr1 = static_cast<NumberNode&>(*expr1);
const NumberNode& numberExpr2 = static_cast<NumberNode&>(*expr2);
return createNumberFromBinaryOperation(location, numberExpr1.value() * numberExpr2.value(), numberExpr1, numberExpr2);
}
if (expr1->isNumber() && static_cast<NumberNode*>(expr1)->value() == 1)
return new (m_parserArena) UnaryPlusNode(location, expr2);
if (expr2->isNumber() && static_cast<NumberNode*>(expr2)->value() == 1)
return new (m_parserArena) UnaryPlusNode(location, expr1);
return new (m_parserArena) MultNode(location, expr1, expr2, rightHasAssignments);
}
ExpressionNode* ASTBuilder::makeDivNode(const JSTokenLocation& location, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments)
{
// FIXME: Unary + change the evaluation order.
// https://bugs.webkit.org/show_bug.cgi?id=159968
expr1 = expr1->stripUnaryPlus();
expr2 = expr2->stripUnaryPlus();
if (expr1->isNumber() && expr2->isNumber()) {
const NumberNode& numberExpr1 = static_cast<NumberNode&>(*expr1);
const NumberNode& numberExpr2 = static_cast<NumberNode&>(*expr2);
double result = numberExpr1.value() / numberExpr2.value();
if (static_cast<int64_t>(result) == result)
return createNumberFromBinaryOperation(location, result, numberExpr1, numberExpr2);
return createDoubleLikeNumber(location, result);
}
return new (m_parserArena) DivNode(location, expr1, expr2, rightHasAssignments);
}
ExpressionNode* ASTBuilder::makeModNode(const JSTokenLocation& location, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments)
{
// FIXME: Unary + change the evaluation order.
// https://bugs.webkit.org/show_bug.cgi?id=159968
expr1 = expr1->stripUnaryPlus();
expr2 = expr2->stripUnaryPlus();
if (expr1->isNumber() && expr2->isNumber()) {
const NumberNode& numberExpr1 = static_cast<NumberNode&>(*expr1);
const NumberNode& numberExpr2 = static_cast<NumberNode&>(*expr2);
return createIntegerLikeNumber(location, fmod(numberExpr1.value(), numberExpr2.value()));
}
return new (m_parserArena) ModNode(location, expr1, expr2, rightHasAssignments);
}
ExpressionNode* ASTBuilder::makeAddNode(const JSTokenLocation& location, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments)
{
if (expr1->isNumber() && expr2->isNumber()) {
const NumberNode& numberExpr1 = static_cast<NumberNode&>(*expr1);
const NumberNode& numberExpr2 = static_cast<NumberNode&>(*expr2);
return createNumberFromBinaryOperation(location, numberExpr1.value() + numberExpr2.value(), numberExpr1, numberExpr2);
}
return new (m_parserArena) AddNode(location, expr1, expr2, rightHasAssignments);
}
ExpressionNode* ASTBuilder::makeSubNode(const JSTokenLocation& location, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments)
{
// FIXME: Unary + change the evaluation order.
// https://bugs.webkit.org/show_bug.cgi?id=159968
expr1 = expr1->stripUnaryPlus();
expr2 = expr2->stripUnaryPlus();
if (expr1->isNumber() && expr2->isNumber()) {
const NumberNode& numberExpr1 = static_cast<NumberNode&>(*expr1);
const NumberNode& numberExpr2 = static_cast<NumberNode&>(*expr2);
return createNumberFromBinaryOperation(location, numberExpr1.value() - numberExpr2.value(), numberExpr1, numberExpr2);
}
return new (m_parserArena) SubNode(location, expr1, expr2, rightHasAssignments);
}
ExpressionNode* ASTBuilder::makeLeftShiftNode(const JSTokenLocation& location, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments)
{
if (expr1->isNumber() && expr2->isNumber()) {
const NumberNode& numberExpr1 = static_cast<NumberNode&>(*expr1);
const NumberNode& numberExpr2 = static_cast<NumberNode&>(*expr2);
return createIntegerLikeNumber(location, toInt32(numberExpr1.value()) << (toUInt32(numberExpr2.value()) & 0x1f));
}
return new (m_parserArena) LeftShiftNode(location, expr1, expr2, rightHasAssignments);
}
ExpressionNode* ASTBuilder::makeRightShiftNode(const JSTokenLocation& location, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments)
{
if (expr1->isNumber() && expr2->isNumber()) {
const NumberNode& numberExpr1 = static_cast<NumberNode&>(*expr1);
const NumberNode& numberExpr2 = static_cast<NumberNode&>(*expr2);
return createIntegerLikeNumber(location, toInt32(numberExpr1.value()) >> (toUInt32(numberExpr2.value()) & 0x1f));
}
return new (m_parserArena) RightShiftNode(location, expr1, expr2, rightHasAssignments);
}
ExpressionNode* ASTBuilder::makeURightShiftNode(const JSTokenLocation& location, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments)
{
if (expr1->isNumber() && expr2->isNumber()) {
const NumberNode& numberExpr1 = static_cast<NumberNode&>(*expr1);
const NumberNode& numberExpr2 = static_cast<NumberNode&>(*expr2);
return createIntegerLikeNumber(location, toUInt32(numberExpr1.value()) >> (toUInt32(numberExpr2.value()) & 0x1f));
}
return new (m_parserArena) UnsignedRightShiftNode(location, expr1, expr2, rightHasAssignments);
}
ExpressionNode* ASTBuilder::makeBitOrNode(const JSTokenLocation& location, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments)
{
if (expr1->isNumber() && expr2->isNumber()) {
const NumberNode& numberExpr1 = static_cast<NumberNode&>(*expr1);
const NumberNode& numberExpr2 = static_cast<NumberNode&>(*expr2);
return createIntegerLikeNumber(location, toInt32(numberExpr1.value()) | toInt32(numberExpr2.value()));
}
return new (m_parserArena) BitOrNode(location, expr1, expr2, rightHasAssignments);
}
ExpressionNode* ASTBuilder::makeBitAndNode(const JSTokenLocation& location, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments)
{
if (expr1->isNumber() && expr2->isNumber()) {
const NumberNode& numberExpr1 = static_cast<NumberNode&>(*expr1);
const NumberNode& numberExpr2 = static_cast<NumberNode&>(*expr2);
return createIntegerLikeNumber(location, toInt32(numberExpr1.value()) & toInt32(numberExpr2.value()));
}
return new (m_parserArena) BitAndNode(location, expr1, expr2, rightHasAssignments);
}
ExpressionNode* ASTBuilder::makeBitXOrNode(const JSTokenLocation& location, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments)
{
if (expr1->isNumber() && expr2->isNumber()) {
const NumberNode& numberExpr1 = static_cast<NumberNode&>(*expr1);
const NumberNode& numberExpr2 = static_cast<NumberNode&>(*expr2);
return createIntegerLikeNumber(location, toInt32(numberExpr1.value()) ^ toInt32(numberExpr2.value()));
}
return new (m_parserArena) BitXOrNode(location, expr1, expr2, rightHasAssignments);
}
ExpressionNode* ASTBuilder::makeCoalesceNode(const JSTokenLocation& location, ExpressionNode* expr1, ExpressionNode* expr2)
{
// Optimization for `x?.y ?? z`.
if (expr1->isOptionalChain()) {
OptionalChainNode* optionalChain = static_cast<OptionalChainNode*>(expr1);
if (!optionalChain->expr()->isDeleteNode()) {
constexpr bool hasAbsorbedOptionalChain = true;
return new (m_parserArena) CoalesceNode(location, optionalChain->expr(), expr2, hasAbsorbedOptionalChain);
}
}
constexpr bool hasAbsorbedOptionalChain = false;
return new (m_parserArena) CoalesceNode(location, expr1, expr2, hasAbsorbedOptionalChain);
}
ExpressionNode* ASTBuilder::makeFunctionCallNode(const JSTokenLocation& location, ExpressionNode* func, bool previousBaseWasSuper, ArgumentsNode* args, const JSTextPosition& divotStart, const JSTextPosition& divot, const JSTextPosition& divotEnd, size_t callOrApplyChildDepth, bool isOptionalCall)
{
ASSERT(divot.offset >= divot.lineStartOffset);
if (func->isSuperNode())
usesSuperCall();
if (func->isBytecodeIntrinsicNode()) {
ASSERT(!isOptionalCall);
BytecodeIntrinsicNode* intrinsic = static_cast<BytecodeIntrinsicNode*>(func);
if (intrinsic->type() == BytecodeIntrinsicNode::Type::Constant)
return new (m_parserArena) BytecodeIntrinsicNode(BytecodeIntrinsicNode::Type::Function, location, intrinsic->emitter(), intrinsic->identifier(), args, divot, divotStart, divotEnd);
}
if (func->isOptionalChain()) {
OptionalChainNode* optionalChain = static_cast<OptionalChainNode*>(func);
if (optionalChain->expr()->isLocation()) {
ASSERT(!optionalChain->expr()->isResolveNode());
// We must take care to preserve our `this` value in cases like `a?.b?.()` and `(a?.b)()`, respectively.
if (isOptionalCall)
return makeFunctionCallNode(location, optionalChain->expr(), previousBaseWasSuper, args, divotStart, divot, divotEnd, callOrApplyChildDepth, isOptionalCall);
optionalChain->setExpr(makeFunctionCallNode(location, optionalChain->expr(), previousBaseWasSuper, args, divotStart, divot, divotEnd, callOrApplyChildDepth, isOptionalCall));
return optionalChain;
}
}
if (!func->isLocation())
return new (m_parserArena) FunctionCallValueNode(location, func, args, divot, divotStart, divotEnd);
if (func->isResolveNode()) {
ResolveNode* resolve = static_cast<ResolveNode*>(func);
const Identifier& identifier = resolve->identifier();
if (identifier == m_vm.propertyNames->eval) {
usesEval();
return new (m_parserArena) EvalFunctionCallNode(location, args, divot, divotStart, divotEnd);
}
return new (m_parserArena) FunctionCallResolveNode(location, identifier, args, divot, divotStart, divotEnd);
}
if (func->isBracketAccessorNode()) {
BracketAccessorNode* bracket = static_cast<BracketAccessorNode*>(func);
FunctionCallBracketNode* node = new (m_parserArena) FunctionCallBracketNode(location, bracket->base(), bracket->subscript(), bracket->subscriptHasAssignments(), args, divot, divotStart, divotEnd);
node->setSubexpressionInfo(bracket->divot(), bracket->divotEnd().offset);
return node;
}
ASSERT(func->isDotAccessorNode());
DotAccessorNode* dot = static_cast<DotAccessorNode*>(func);
FunctionCallDotNode* node = nullptr;
if (!previousBaseWasSuper && (dot->identifier() == m_vm.propertyNames->builtinNames().callPublicName() || dot->identifier() == m_vm.propertyNames->builtinNames().callPrivateName()))
node = new (m_parserArena) CallFunctionCallDotNode(location, dot->base(), dot->identifier(), args, divot, divotStart, divotEnd, callOrApplyChildDepth);
else if (!previousBaseWasSuper && (dot->identifier() == m_vm.propertyNames->builtinNames().applyPublicName() || dot->identifier() == m_vm.propertyNames->builtinNames().applyPrivateName())) {
// FIXME: This check is only needed because we haven't taught the bytecode generator to inline
// Reflect.apply yet. See https://bugs.webkit.org/show_bug.cgi?id=190668.
if (!dot->base()->isResolveNode() || static_cast<ResolveNode*>(dot->base())->identifier() != "Reflect")
node = new (m_parserArena) ApplyFunctionCallDotNode(location, dot->base(), dot->identifier(), args, divot, divotStart, divotEnd, callOrApplyChildDepth);
}
if (!node)
node = new (m_parserArena) FunctionCallDotNode(location, dot->base(), dot->identifier(), args, divot, divotStart, divotEnd);
node->setSubexpressionInfo(dot->divot(), dot->divotEnd().offset);
return node;
}
ExpressionNode* ASTBuilder::makeBinaryNode(const JSTokenLocation& location, int token, std::pair<ExpressionNode*, BinaryOpInfo> lhs, std::pair<ExpressionNode*, BinaryOpInfo> rhs)
{
switch (token) {
case COALESCE:
return makeCoalesceNode(location, lhs.first, rhs.first);
case OR:
return new (m_parserArena) LogicalOpNode(location, lhs.first, rhs.first, OpLogicalOr);
case AND:
return new (m_parserArena) LogicalOpNode(location, lhs.first, rhs.first, OpLogicalAnd);
case BITOR:
return makeBitOrNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
case BITXOR:
return makeBitXOrNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
case BITAND:
return makeBitAndNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
case EQEQ:
return new (m_parserArena) EqualNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
case NE:
return new (m_parserArena) NotEqualNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
case STREQ:
return new (m_parserArena) StrictEqualNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
case STRNEQ:
return new (m_parserArena) NotStrictEqualNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
case LT:
return new (m_parserArena) LessNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
case GT:
return new (m_parserArena) GreaterNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
case LE:
return new (m_parserArena) LessEqNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
case GE:
return new (m_parserArena) GreaterEqNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
case INSTANCEOF: {
InstanceOfNode* node = new (m_parserArena) InstanceOfNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
setExceptionLocation(node, lhs.second.start, rhs.second.start, rhs.second.end);
return node;
}
case INTOKEN: {
InNode* node = new (m_parserArena) InNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
setExceptionLocation(node, lhs.second.start, rhs.second.start, rhs.second.end);
return node;
}
case LSHIFT:
return makeLeftShiftNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
case RSHIFT:
return makeRightShiftNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
case URSHIFT:
return makeURightShiftNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
case PLUS:
return makeAddNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
case MINUS:
return makeSubNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
case TIMES:
return makeMultNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
case DIVIDE:
return makeDivNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
case MOD:
return makeModNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
case POW:
return makePowNode(location, lhs.first, rhs.first, rhs.second.hasAssignment);
}
CRASH();
return 0;
}
ExpressionNode* ASTBuilder::makeAssignNode(const JSTokenLocation& location, ExpressionNode* loc, Operator op, ExpressionNode* expr, bool locHasAssignments, bool exprHasAssignments, const JSTextPosition& start, const JSTextPosition& divot, const JSTextPosition& end)
{
if (!loc->isLocation()) {
ASSERT(loc->isFunctionCall());
return new (m_parserArena) AssignErrorNode(location, divot, start, end);
}
if (loc->isResolveNode()) {
ResolveNode* resolve = static_cast<ResolveNode*>(loc);
if (op == OpEqual) {
if (expr->isBaseFuncExprNode()) {
auto metadata = static_cast<BaseFuncExprNode*>(expr)->metadata();
metadata->setEcmaName(resolve->identifier());
} else if (expr->isClassExprNode())
static_cast<ClassExprNode*>(expr)->setEcmaName(resolve->identifier());
AssignResolveNode* node = new (m_parserArena) AssignResolveNode(location, resolve->identifier(), expr, AssignmentContext::AssignmentExpression);
setExceptionLocation(node, start, divot, end);
return node;
}
return new (m_parserArena) ReadModifyResolveNode(location, resolve->identifier(), op, expr, exprHasAssignments, divot, start, end);
}
if (loc->isBracketAccessorNode()) {
BracketAccessorNode* bracket = static_cast<BracketAccessorNode*>(loc);
if (op == OpEqual)
return new (m_parserArena) AssignBracketNode(location, bracket->base(), bracket->subscript(), expr, locHasAssignments, exprHasAssignments, bracket->divot(), start, end);
ReadModifyBracketNode* node = new (m_parserArena) ReadModifyBracketNode(location, bracket->base(), bracket->subscript(), op, expr, locHasAssignments, exprHasAssignments, divot, start, end);
node->setSubexpressionInfo(bracket->divot(), bracket->divotEnd().offset);
return node;
}
ASSERT(loc->isDotAccessorNode());
DotAccessorNode* dot = static_cast<DotAccessorNode*>(loc);
if (op == OpEqual)
return new (m_parserArena) AssignDotNode(location, dot->base(), dot->identifier(), expr, exprHasAssignments, dot->divot(), start, end);
ReadModifyDotNode* node = new (m_parserArena) ReadModifyDotNode(location, dot->base(), dot->identifier(), op, expr, exprHasAssignments, divot, start, end);
node->setSubexpressionInfo(dot->divot(), dot->divotEnd().offset);
return node;
}
ExpressionNode* ASTBuilder::makePrefixNode(const JSTokenLocation& location, ExpressionNode* expr, Operator op, const JSTextPosition& start, const JSTextPosition& divot, const JSTextPosition& end)
{
return new (m_parserArena) PrefixNode(location, expr, op, divot, start, end);
}
ExpressionNode* ASTBuilder::makePostfixNode(const JSTokenLocation& location, ExpressionNode* expr, Operator op, const JSTextPosition& start, const JSTextPosition& divot, const JSTextPosition& end)
{
return new (m_parserArena) PostfixNode(location, expr, op, divot, start, end);
}
}