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1618 lines (1222 loc) · 52 KB
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/*
* Copyright (C) 1999-2000 Harri Porten ([email protected])
* Copyright (C) 2001 Peter Kelly ([email protected])
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
* Copyright (C) 2007 Cameron Zwarich ([email protected])
* Copyright (C) 2007 Maks Orlovich
* Copyright (C) 2007 Eric Seidel <[email protected]>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef Nodes_h
#define Nodes_h
#include "Error.h"
#include "JITCode.h"
#include "Opcode.h"
#include "ParserArena.h"
#include "ResultType.h"
#include "SourceCode.h"
#include "SymbolTable.h"
#include <wtf/MathExtras.h>
namespace JSC {
class ArgumentListNode;
class BytecodeGenerator;
class FunctionBodyNode;
class Label;
class PropertyListNode;
class ReadModifyResolveNode;
class RegisterID;
class ScopeChainNode;
class ScopeNode;
typedef unsigned CodeFeatures;
const CodeFeatures NoFeatures = 0;
const CodeFeatures EvalFeature = 1 << 0;
const CodeFeatures ArgumentsFeature = 1 << 1;
const CodeFeatures WithFeature = 1 << 2;
const CodeFeatures CatchFeature = 1 << 3;
const CodeFeatures ThisFeature = 1 << 4;
const CodeFeatures StrictModeFeature = 1 << 5;
const CodeFeatures ShadowsArgumentsFeature = 1 << 6;
const CodeFeatures AllFeatures = EvalFeature | ArgumentsFeature | WithFeature | CatchFeature | ThisFeature | StrictModeFeature | ShadowsArgumentsFeature;
enum Operator {
OpEqual,
OpPlusEq,
OpMinusEq,
OpMultEq,
OpDivEq,
OpPlusPlus,
OpMinusMinus,
OpAndEq,
OpXOrEq,
OpOrEq,
OpModEq,
OpLShift,
OpRShift,
OpURShift
};
enum LogicalOperator {
OpLogicalAnd,
OpLogicalOr
};
typedef HashSet<RefPtr<StringImpl>, IdentifierRepHash> IdentifierSet;
namespace DeclarationStacks {
enum VarAttrs { IsConstant = 1, HasInitializer = 2 };
typedef Vector<std::pair<const Identifier*, unsigned> > VarStack;
typedef Vector<FunctionBodyNode*> FunctionStack;
}
struct SwitchInfo {
enum SwitchType { SwitchNone, SwitchImmediate, SwitchCharacter, SwitchString };
uint32_t bytecodeOffset;
SwitchType switchType;
};
class ParserArenaFreeable {
public:
// ParserArenaFreeable objects are are freed when the arena is deleted.
// Destructors are not called. Clients must not call delete on such objects.
void* operator new(size_t, JSGlobalData*);
};
class ParserArenaDeletable {
public:
virtual ~ParserArenaDeletable() { }
// ParserArenaDeletable objects are deleted when the arena is deleted.
// Clients must not call delete directly on such objects.
void* operator new(size_t, JSGlobalData*);
};
template <typename T>
struct ParserArenaData : ParserArenaDeletable {
T data;
};
class ParserArenaRefCounted : public RefCounted<ParserArenaRefCounted> {
protected:
ParserArenaRefCounted(JSGlobalData*);
public:
virtual ~ParserArenaRefCounted()
{
ASSERT(deletionHasBegun());
}
};
class Node : public ParserArenaFreeable {
protected:
Node(int);
public:
virtual ~Node() { }
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* destination = 0) = 0;
int lineNo() const { return m_lineNumber; }
protected:
int m_lineNumber;
};
class ExpressionNode : public Node {
protected:
ExpressionNode(int, ResultType = ResultType::unknownType());
public:
virtual bool isNumber() const { return false; }
virtual bool isString() const { return false; }
virtual bool isNull() const { return false; }
virtual bool isPure(BytecodeGenerator&) const { return false; }
virtual bool isLocation() const { return false; }
virtual bool isResolveNode() const { return false; }
virtual bool isBracketAccessorNode() const { return false; }
virtual bool isDotAccessorNode() const { return false; }
virtual bool isFuncExprNode() const { return false; }
virtual bool isCommaNode() const { return false; }
virtual bool isSimpleArray() const { return false; }
virtual bool isAdd() const { return false; }
virtual bool isSubtract() const { return false; }
virtual bool hasConditionContextCodegen() const { return false; }
virtual void emitBytecodeInConditionContext(BytecodeGenerator&, Label*, Label*, bool) { ASSERT_NOT_REACHED(); }
virtual ExpressionNode* stripUnaryPlus() { return this; }
ResultType resultDescriptor() const { return m_resultType; }
private:
ResultType m_resultType;
};
class StatementNode : public Node {
protected:
StatementNode(int);
public:
JS_EXPORT_PRIVATE void setLoc(int firstLine, int lastLine);
int firstLine() const { return lineNo(); }
int lastLine() const { return m_lastLine; }
virtual bool isEmptyStatement() const { return false; }
virtual bool isReturnNode() const { return false; }
virtual bool isExprStatement() const { return false; }
virtual bool isBlock() const { return false; }
private:
int m_lastLine;
};
class NullNode : public ExpressionNode {
public:
NullNode(int);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
virtual bool isNull() const { return true; }
};
class BooleanNode : public ExpressionNode {
public:
BooleanNode(int, bool value);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
virtual bool isPure(BytecodeGenerator&) const { return true; }
bool m_value;
};
class NumberNode : public ExpressionNode {
public:
NumberNode(int, double value);
double value() const { return m_value; }
void setValue(double value) { m_value = value; }
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
virtual bool isNumber() const { return true; }
virtual bool isPure(BytecodeGenerator&) const { return true; }
double m_value;
};
class StringNode : public ExpressionNode {
public:
StringNode(int, const Identifier&);
const Identifier& value() { return m_value; }
private:
virtual bool isPure(BytecodeGenerator&) const { return true; }
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
virtual bool isString() const { return true; }
const Identifier& m_value;
};
class ThrowableExpressionData {
public:
ThrowableExpressionData()
: m_divot(static_cast<uint32_t>(-1))
, m_startOffset(static_cast<uint16_t>(-1))
, m_endOffset(static_cast<uint16_t>(-1))
{
}
ThrowableExpressionData(unsigned divot, unsigned startOffset, unsigned endOffset)
: m_divot(divot)
, m_startOffset(startOffset)
, m_endOffset(endOffset)
{
}
void setExceptionSourceCode(unsigned divot, unsigned startOffset, unsigned endOffset)
{
m_divot = divot;
m_startOffset = startOffset;
m_endOffset = endOffset;
}
uint32_t divot() const { return m_divot; }
uint16_t startOffset() const { return m_startOffset; }
uint16_t endOffset() const { return m_endOffset; }
protected:
RegisterID* emitThrowReferenceError(BytecodeGenerator&, const UString& message);
private:
uint32_t m_divot;
uint16_t m_startOffset;
uint16_t m_endOffset;
};
class ThrowableSubExpressionData : public ThrowableExpressionData {
public:
ThrowableSubExpressionData()
: m_subexpressionDivotOffset(0)
, m_subexpressionEndOffset(0)
{
}
ThrowableSubExpressionData(unsigned divot, unsigned startOffset, unsigned endOffset)
: ThrowableExpressionData(divot, startOffset, endOffset)
, m_subexpressionDivotOffset(0)
, m_subexpressionEndOffset(0)
{
}
void setSubexpressionInfo(uint32_t subexpressionDivot, uint16_t subexpressionOffset)
{
ASSERT(subexpressionDivot <= divot());
if ((divot() - subexpressionDivot) & ~0xFFFF) // Overflow means we can't do this safely, so just point at the primary divot
return;
m_subexpressionDivotOffset = divot() - subexpressionDivot;
m_subexpressionEndOffset = subexpressionOffset;
}
protected:
uint16_t m_subexpressionDivotOffset;
uint16_t m_subexpressionEndOffset;
};
class ThrowablePrefixedSubExpressionData : public ThrowableExpressionData {
public:
ThrowablePrefixedSubExpressionData()
: m_subexpressionDivotOffset(0)
, m_subexpressionStartOffset(0)
{
}
ThrowablePrefixedSubExpressionData(unsigned divot, unsigned startOffset, unsigned endOffset)
: ThrowableExpressionData(divot, startOffset, endOffset)
, m_subexpressionDivotOffset(0)
, m_subexpressionStartOffset(0)
{
}
void setSubexpressionInfo(uint32_t subexpressionDivot, uint16_t subexpressionOffset)
{
ASSERT(subexpressionDivot >= divot());
if ((subexpressionDivot - divot()) & ~0xFFFF) // Overflow means we can't do this safely, so just point at the primary divot
return;
m_subexpressionDivotOffset = subexpressionDivot - divot();
m_subexpressionStartOffset = subexpressionOffset;
}
protected:
uint16_t m_subexpressionDivotOffset;
uint16_t m_subexpressionStartOffset;
};
class RegExpNode : public ExpressionNode, public ThrowableExpressionData {
public:
RegExpNode(int, const Identifier& pattern, const Identifier& flags);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
const Identifier& m_pattern;
const Identifier& m_flags;
};
class ThisNode : public ExpressionNode {
public:
ThisNode(int);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
};
class ResolveNode : public ExpressionNode {
public:
ResolveNode(int, const Identifier&, int startOffset);
const Identifier& identifier() const { return m_ident; }
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
virtual bool isPure(BytecodeGenerator&) const ;
virtual bool isLocation() const { return true; }
virtual bool isResolveNode() const { return true; }
const Identifier& m_ident;
int32_t m_startOffset;
};
class ElementNode : public ParserArenaFreeable {
public:
ElementNode(int elision, ExpressionNode*);
ElementNode(ElementNode*, int elision, ExpressionNode*);
int elision() const { return m_elision; }
ExpressionNode* value() { return m_node; }
ElementNode* next() { return m_next; }
private:
ElementNode* m_next;
int m_elision;
ExpressionNode* m_node;
};
class ArrayNode : public ExpressionNode {
public:
ArrayNode(int, int elision);
ArrayNode(int, ElementNode*);
ArrayNode(int, int elision, ElementNode*);
ArgumentListNode* toArgumentList(JSGlobalData*, int) const;
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
virtual bool isSimpleArray() const ;
ElementNode* m_element;
int m_elision;
bool m_optional;
};
class PropertyNode : public ParserArenaFreeable {
public:
enum Type { Constant = 1, Getter = 2, Setter = 4 };
PropertyNode(JSGlobalData*, const Identifier&, ExpressionNode*, Type);
PropertyNode(JSGlobalData*, double, ExpressionNode*, Type);
const Identifier& name() const { return m_name; }
Type type() const { return m_type; }
private:
friend class PropertyListNode;
const Identifier& m_name;
ExpressionNode* m_assign;
Type m_type;
};
class PropertyListNode : public Node {
public:
PropertyListNode(int, PropertyNode*);
PropertyListNode(int, PropertyNode*, PropertyListNode*);
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
private:
PropertyNode* m_node;
PropertyListNode* m_next;
};
class ObjectLiteralNode : public ExpressionNode {
public:
ObjectLiteralNode(int);
ObjectLiteralNode(int, PropertyListNode*);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
PropertyListNode* m_list;
};
class BracketAccessorNode : public ExpressionNode, public ThrowableExpressionData {
public:
BracketAccessorNode(int, ExpressionNode* base, ExpressionNode* subscript, bool subscriptHasAssignments);
ExpressionNode* base() const { return m_base; }
ExpressionNode* subscript() const { return m_subscript; }
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
virtual bool isLocation() const { return true; }
virtual bool isBracketAccessorNode() const { return true; }
ExpressionNode* m_base;
ExpressionNode* m_subscript;
bool m_subscriptHasAssignments;
};
class DotAccessorNode : public ExpressionNode, public ThrowableExpressionData {
public:
DotAccessorNode(int, ExpressionNode* base, const Identifier&);
ExpressionNode* base() const { return m_base; }
const Identifier& identifier() const { return m_ident; }
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
virtual bool isLocation() const { return true; }
virtual bool isDotAccessorNode() const { return true; }
ExpressionNode* m_base;
const Identifier& m_ident;
};
class ArgumentListNode : public Node {
public:
ArgumentListNode(int, ExpressionNode*);
ArgumentListNode(int, ArgumentListNode*, ExpressionNode*);
ArgumentListNode* m_next;
ExpressionNode* m_expr;
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
};
class ArgumentsNode : public ParserArenaFreeable {
public:
ArgumentsNode();
ArgumentsNode(ArgumentListNode*);
ArgumentListNode* m_listNode;
};
class NewExprNode : public ExpressionNode, public ThrowableExpressionData {
public:
NewExprNode(int, ExpressionNode*);
NewExprNode(int, ExpressionNode*, ArgumentsNode*);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
ExpressionNode* m_expr;
ArgumentsNode* m_args;
};
class EvalFunctionCallNode : public ExpressionNode, public ThrowableExpressionData {
public:
EvalFunctionCallNode(int, ArgumentsNode*, unsigned divot, unsigned startOffset, unsigned endOffset);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
ArgumentsNode* m_args;
};
class FunctionCallValueNode : public ExpressionNode, public ThrowableExpressionData {
public:
FunctionCallValueNode(int, ExpressionNode*, ArgumentsNode*, unsigned divot, unsigned startOffset, unsigned endOffset);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
ExpressionNode* m_expr;
ArgumentsNode* m_args;
};
class FunctionCallResolveNode : public ExpressionNode, public ThrowableExpressionData {
public:
FunctionCallResolveNode(int, const Identifier&, ArgumentsNode*, unsigned divot, unsigned startOffset, unsigned endOffset);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
const Identifier& m_ident;
ArgumentsNode* m_args;
size_t m_index; // Used by LocalVarFunctionCallNode.
size_t m_scopeDepth; // Used by ScopedVarFunctionCallNode and NonLocalVarFunctionCallNode
};
class FunctionCallBracketNode : public ExpressionNode, public ThrowableSubExpressionData {
public:
FunctionCallBracketNode(int, ExpressionNode* base, ExpressionNode* subscript, ArgumentsNode*, unsigned divot, unsigned startOffset, unsigned endOffset);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
ExpressionNode* m_base;
ExpressionNode* m_subscript;
ArgumentsNode* m_args;
};
class FunctionCallDotNode : public ExpressionNode, public ThrowableSubExpressionData {
public:
FunctionCallDotNode(int, ExpressionNode* base, const Identifier&, ArgumentsNode*, unsigned divot, unsigned startOffset, unsigned endOffset);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
protected:
ExpressionNode* m_base;
const Identifier& m_ident;
ArgumentsNode* m_args;
};
class CallFunctionCallDotNode : public FunctionCallDotNode {
public:
CallFunctionCallDotNode(int, ExpressionNode* base, const Identifier&, ArgumentsNode*, unsigned divot, unsigned startOffset, unsigned endOffset);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
};
class ApplyFunctionCallDotNode : public FunctionCallDotNode {
public:
ApplyFunctionCallDotNode(int, ExpressionNode* base, const Identifier&, ArgumentsNode*, unsigned divot, unsigned startOffset, unsigned endOffset);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
};
class PrePostResolveNode : public ExpressionNode, public ThrowableExpressionData {
public:
PrePostResolveNode(int, const Identifier&, unsigned divot, unsigned startOffset, unsigned endOffset);
protected:
const Identifier& m_ident;
};
class PostfixResolveNode : public PrePostResolveNode {
public:
PostfixResolveNode(int, const Identifier&, Operator, unsigned divot, unsigned startOffset, unsigned endOffset);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
Operator m_operator;
};
class PostfixBracketNode : public ExpressionNode, public ThrowableSubExpressionData {
public:
PostfixBracketNode(int, ExpressionNode* base, ExpressionNode* subscript, Operator, unsigned divot, unsigned startOffset, unsigned endOffset);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
ExpressionNode* m_base;
ExpressionNode* m_subscript;
Operator m_operator;
};
class PostfixDotNode : public ExpressionNode, public ThrowableSubExpressionData {
public:
PostfixDotNode(int, ExpressionNode* base, const Identifier&, Operator, unsigned divot, unsigned startOffset, unsigned endOffset);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
ExpressionNode* m_base;
const Identifier& m_ident;
Operator m_operator;
};
class PostfixErrorNode : public ExpressionNode, public ThrowableSubExpressionData {
public:
PostfixErrorNode(int, ExpressionNode*, Operator, unsigned divot, unsigned startOffset, unsigned endOffset);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
ExpressionNode* m_expr;
Operator m_operator;
};
class DeleteResolveNode : public ExpressionNode, public ThrowableExpressionData {
public:
DeleteResolveNode(int, const Identifier&, unsigned divot, unsigned startOffset, unsigned endOffset);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
const Identifier& m_ident;
};
class DeleteBracketNode : public ExpressionNode, public ThrowableExpressionData {
public:
DeleteBracketNode(int, ExpressionNode* base, ExpressionNode* subscript, unsigned divot, unsigned startOffset, unsigned endOffset);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
ExpressionNode* m_base;
ExpressionNode* m_subscript;
};
class DeleteDotNode : public ExpressionNode, public ThrowableExpressionData {
public:
DeleteDotNode(int, ExpressionNode* base, const Identifier&, unsigned divot, unsigned startOffset, unsigned endOffset);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
ExpressionNode* m_base;
const Identifier& m_ident;
};
class DeleteValueNode : public ExpressionNode {
public:
DeleteValueNode(int, ExpressionNode*);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
ExpressionNode* m_expr;
};
class VoidNode : public ExpressionNode {
public:
VoidNode(int, ExpressionNode*);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
ExpressionNode* m_expr;
};
class TypeOfResolveNode : public ExpressionNode {
public:
TypeOfResolveNode(int, const Identifier&);
const Identifier& identifier() const { return m_ident; }
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
const Identifier& m_ident;
};
class TypeOfValueNode : public ExpressionNode {
public:
TypeOfValueNode(int, ExpressionNode*);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
ExpressionNode* m_expr;
};
class PrefixResolveNode : public PrePostResolveNode {
public:
PrefixResolveNode(int, const Identifier&, Operator, unsigned divot, unsigned startOffset, unsigned endOffset);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
Operator m_operator;
};
class PrefixBracketNode : public ExpressionNode, public ThrowablePrefixedSubExpressionData {
public:
PrefixBracketNode(int, ExpressionNode* base, ExpressionNode* subscript, Operator, unsigned divot, unsigned startOffset, unsigned endOffset);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
ExpressionNode* m_base;
ExpressionNode* m_subscript;
Operator m_operator;
};
class PrefixDotNode : public ExpressionNode, public ThrowablePrefixedSubExpressionData {
public:
PrefixDotNode(int, ExpressionNode* base, const Identifier&, Operator, unsigned divot, unsigned startOffset, unsigned endOffset);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
ExpressionNode* m_base;
const Identifier& m_ident;
Operator m_operator;
};
class PrefixErrorNode : public ExpressionNode, public ThrowableExpressionData {
public:
PrefixErrorNode(int, ExpressionNode*, Operator, unsigned divot, unsigned startOffset, unsigned endOffset);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
ExpressionNode* m_expr;
Operator m_operator;
};
class UnaryOpNode : public ExpressionNode {
public:
UnaryOpNode(int, ResultType, ExpressionNode*, OpcodeID);
protected:
ExpressionNode* expr() { return m_expr; }
const ExpressionNode* expr() const { return m_expr; }
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
OpcodeID opcodeID() const { return m_opcodeID; }
ExpressionNode* m_expr;
OpcodeID m_opcodeID;
};
class UnaryPlusNode : public UnaryOpNode {
public:
UnaryPlusNode(int, ExpressionNode*);
private:
virtual ExpressionNode* stripUnaryPlus() { return expr(); }
};
class NegateNode : public UnaryOpNode {
public:
NegateNode(int, ExpressionNode*);
};
class BitwiseNotNode : public ExpressionNode {
public:
BitwiseNotNode(int, ExpressionNode*);
protected:
ExpressionNode* expr() { return m_expr; }
const ExpressionNode* expr() const { return m_expr; }
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
ExpressionNode* m_expr;
};
class LogicalNotNode : public UnaryOpNode {
public:
LogicalNotNode(int, ExpressionNode*);
private:
void emitBytecodeInConditionContext(BytecodeGenerator&, Label* trueTarget, Label* falseTarget, bool fallThroughMeansTrue);
virtual bool hasConditionContextCodegen() const { return expr()->hasConditionContextCodegen(); }
};
class BinaryOpNode : public ExpressionNode {
public:
BinaryOpNode(int, ExpressionNode* expr1, ExpressionNode* expr2, OpcodeID, bool rightHasAssignments);
BinaryOpNode(int, ResultType, ExpressionNode* expr1, ExpressionNode* expr2, OpcodeID, bool rightHasAssignments);
RegisterID* emitStrcat(BytecodeGenerator& generator, RegisterID* destination, RegisterID* lhs = 0, ReadModifyResolveNode* emitExpressionInfoForMe = 0);
ExpressionNode* lhs() { return m_expr1; };
ExpressionNode* rhs() { return m_expr2; };
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
protected:
OpcodeID opcodeID() const { return m_opcodeID; }
protected:
ExpressionNode* m_expr1;
ExpressionNode* m_expr2;
private:
OpcodeID m_opcodeID;
protected:
bool m_rightHasAssignments;
};
class MultNode : public BinaryOpNode {
public:
MultNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class DivNode : public BinaryOpNode {
public:
DivNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class ModNode : public BinaryOpNode {
public:
ModNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class AddNode : public BinaryOpNode {
public:
AddNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
virtual bool isAdd() const { return true; }
};
class SubNode : public BinaryOpNode {
public:
SubNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
virtual bool isSubtract() const { return true; }
};
class LeftShiftNode : public BinaryOpNode {
public:
LeftShiftNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class RightShiftNode : public BinaryOpNode {
public:
RightShiftNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class UnsignedRightShiftNode : public BinaryOpNode {
public:
UnsignedRightShiftNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class LessNode : public BinaryOpNode {
public:
LessNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class GreaterNode : public BinaryOpNode {
public:
GreaterNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class LessEqNode : public BinaryOpNode {
public:
LessEqNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class GreaterEqNode : public BinaryOpNode {
public:
GreaterEqNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class ThrowableBinaryOpNode : public BinaryOpNode, public ThrowableExpressionData {
public:
ThrowableBinaryOpNode(int, ResultType, ExpressionNode* expr1, ExpressionNode* expr2, OpcodeID, bool rightHasAssignments);
ThrowableBinaryOpNode(int, ExpressionNode* expr1, ExpressionNode* expr2, OpcodeID, bool rightHasAssignments);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
};
class InstanceOfNode : public ThrowableBinaryOpNode {
public:
InstanceOfNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
};
class InNode : public ThrowableBinaryOpNode {
public:
InNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class EqualNode : public BinaryOpNode {
public:
EqualNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
};
class NotEqualNode : public BinaryOpNode {
public:
NotEqualNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class StrictEqualNode : public BinaryOpNode {
public:
StrictEqualNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
};
class NotStrictEqualNode : public BinaryOpNode {
public:
NotStrictEqualNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class BitAndNode : public BinaryOpNode {
public:
BitAndNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class BitOrNode : public BinaryOpNode {
public:
BitOrNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class BitXOrNode : public BinaryOpNode {
public:
BitXOrNode(int, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
// m_expr1 && m_expr2, m_expr1 || m_expr2
class LogicalOpNode : public ExpressionNode {
public:
LogicalOpNode(int, ExpressionNode* expr1, ExpressionNode* expr2, LogicalOperator);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
void emitBytecodeInConditionContext(BytecodeGenerator&, Label* trueTarget, Label* falseTarget, bool fallThroughMeansTrue);
virtual bool hasConditionContextCodegen() const { return true; }
ExpressionNode* m_expr1;
ExpressionNode* m_expr2;
LogicalOperator m_operator;
};
// The ternary operator, "m_logical ? m_expr1 : m_expr2"
class ConditionalNode : public ExpressionNode {
public:
ConditionalNode(int, ExpressionNode* logical, ExpressionNode* expr1, ExpressionNode* expr2);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0);
ExpressionNode* m_logical;
ExpressionNode* m_expr1;
ExpressionNode* m_expr2;
};
class ReadModifyResolveNode : public ExpressionNode, public ThrowableExpressionData {
public:
ReadModifyResolveNode(int, const Identifier&, Operator, ExpressionNode* right, bool rightHasAssignments, unsigned divot, unsigned startOffset, unsigned endOffset);