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1783 lines (1377 loc) · 65 KB
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/*
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
* Copyright (C) 2001 Peter Kelly (pmk@post.com)
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2013 Apple Inc. All rights reserved.
* Copyright (C) 2007 Cameron Zwarich (cwzwarich@uwaterloo.ca)
* Copyright (C) 2007 Maks Orlovich
* Copyright (C) 2007 Eric Seidel <eric@webkit.org>
*
* 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 "ParserTokens.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 JSScope;
class ScopeNode;
enum Operator {
OpEqual,
OpPlusEq,
OpMinusEq,
OpMultEq,
OpDivEq,
OpPlusPlus,
OpMinusMinus,
OpAndEq,
OpXOrEq,
OpOrEq,
OpModEq,
OpLShift,
OpRShift,
OpURShift
};
enum LogicalOperator {
OpLogicalAnd,
OpLogicalOr
};
enum FallThroughMode {
FallThroughMeansTrue = 0,
FallThroughMeansFalse = 1
};
inline FallThroughMode invert(FallThroughMode fallThroughMode) { return static_cast<FallThroughMode>(!fallThroughMode); }
typedef HashSet<RefPtr<StringImpl>, IdentifierRepHash> IdentifierSet;
namespace DeclarationStacks {
enum VarAttrs { IsConstant = 1, HasInitializer = 2 };
typedef Vector<std::pair<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, VM*);
};
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, VM*);
};
template <typename T>
struct ParserArenaData : ParserArenaDeletable {
T data;
};
class ParserArenaRefCounted : public RefCounted<ParserArenaRefCounted> {
WTF_MAKE_FAST_ALLOCATED;
protected:
ParserArenaRefCounted(VM*);
public:
virtual ~ParserArenaRefCounted()
{
ASSERT(deletionHasBegun());
}
};
class Node : public ParserArenaFreeable {
protected:
Node(const JSTokenLocation&);
public:
virtual ~Node() { }
int lineNo() const { return m_position.line; }
int startOffset() const { return m_position.offset; }
int lineStartOffset() const { return m_position.lineStartOffset; }
const JSTextPosition& position() const { return m_position; }
protected:
JSTextPosition m_position;
};
class ExpressionNode : public Node {
protected:
ExpressionNode(const JSTokenLocation&, ResultType = ResultType::unknownType());
public:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* destination = 0) = 0;
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 isConstant() const { return false; }
virtual bool isLocation() const { return false; }
virtual bool isAssignmentLocation() const { return isLocation(); }
virtual bool isResolveNode() const { return false; }
virtual bool isBracketAccessorNode() const { return false; }
virtual bool isDotAccessorNode() const { return false; }
virtual bool isDeconstructionNode() 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 isBoolean() const { return false; }
virtual bool isSpreadExpression() const { return false; }
virtual void emitBytecodeInConditionContext(BytecodeGenerator&, Label*, Label*, FallThroughMode);
virtual ExpressionNode* stripUnaryPlus() { return this; }
ResultType resultDescriptor() const { return m_resultType; }
private:
ResultType m_resultType;
};
class StatementNode : public Node {
protected:
StatementNode(const JSTokenLocation&);
public:
virtual void emitBytecode(BytecodeGenerator&, RegisterID* destination = 0) = 0;
void setLoc(unsigned firstLine, unsigned lastLine, int startOffset, int lineStartOffset);
unsigned firstLine() const { return lineNo(); }
unsigned 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 isBreak() const { return false; }
virtual bool isContinue() const { return false; }
virtual bool isBlock() const { return false; }
protected:
int m_lastLine;
};
class ConstantNode : public ExpressionNode {
public:
ConstantNode(const JSTokenLocation&, ResultType);
virtual bool isPure(BytecodeGenerator&) const override { return true; }
virtual bool isConstant() const override { return true; }
virtual JSValue jsValue(BytecodeGenerator&) const = 0;
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
virtual void emitBytecodeInConditionContext(BytecodeGenerator&, Label* trueTarget, Label* falseTarget, FallThroughMode) override;
};
class NullNode : public ConstantNode {
public:
NullNode(const JSTokenLocation&);
private:
virtual bool isNull() const override { return true; }
virtual JSValue jsValue(BytecodeGenerator&) const override { return jsNull(); }
};
class BooleanNode : public ConstantNode {
public:
BooleanNode(const JSTokenLocation&, bool value);
bool value() { return m_value; }
private:
virtual bool isBoolean() const override { return true; }
virtual JSValue jsValue(BytecodeGenerator&) const override { return jsBoolean(m_value); }
bool m_value;
};
class NumberNode : public ConstantNode {
public:
NumberNode(const JSTokenLocation&, double value);
double value() { return m_value; }
void setValue(double value) { m_value = value; }
private:
virtual bool isNumber() const override { return true; }
virtual JSValue jsValue(BytecodeGenerator&) const override { return jsNumber(m_value); }
double m_value;
};
class StringNode : public ConstantNode {
public:
StringNode(const JSTokenLocation&, const Identifier&);
const Identifier& value() { return m_value; }
private:
virtual bool isString() const override { return true; }
virtual JSValue jsValue(BytecodeGenerator&) const override;
const Identifier& m_value;
};
class ThrowableExpressionData {
public:
ThrowableExpressionData()
: m_divot(-1, -1, -1)
, m_divotStart(-1, -1, -1)
, m_divotEnd(-1, -1, -1)
{
}
ThrowableExpressionData(const JSTextPosition& divot, const JSTextPosition& start, const JSTextPosition& end)
: m_divot(divot)
, m_divotStart(start)
, m_divotEnd(end)
{
ASSERT(m_divot.offset >= m_divot.lineStartOffset);
ASSERT(m_divotStart.offset >= m_divotStart.lineStartOffset);
ASSERT(m_divotEnd.offset >= m_divotEnd.lineStartOffset);
}
void setExceptionSourceCode(const JSTextPosition& divot, const JSTextPosition& divotStart, const JSTextPosition& divotEnd)
{
ASSERT(divot.offset >= divot.lineStartOffset);
ASSERT(divotStart.offset >= divotStart.lineStartOffset);
ASSERT(divotEnd.offset >= divotEnd.lineStartOffset);
m_divot = divot;
m_divotStart = divotStart;
m_divotEnd = divotEnd;
}
const JSTextPosition& divot() const { return m_divot; }
const JSTextPosition& divotStart() const { return m_divotStart; }
const JSTextPosition& divotEnd() const { return m_divotEnd; }
protected:
RegisterID* emitThrowReferenceError(BytecodeGenerator&, const String& message);
private:
JSTextPosition m_divot;
JSTextPosition m_divotStart;
JSTextPosition m_divotEnd;
};
class ThrowableSubExpressionData : public ThrowableExpressionData {
public:
ThrowableSubExpressionData()
: m_subexpressionDivotOffset(0)
, m_subexpressionEndOffset(0)
, m_subexpressionLineOffset(0)
, m_subexpressionLineStartOffset(0)
{
}
ThrowableSubExpressionData(const JSTextPosition& divot, const JSTextPosition& divotStart, const JSTextPosition& divotEnd)
: ThrowableExpressionData(divot, divotStart, divotEnd)
, m_subexpressionDivotOffset(0)
, m_subexpressionEndOffset(0)
, m_subexpressionLineOffset(0)
, m_subexpressionLineStartOffset(0)
{
}
void setSubexpressionInfo(const JSTextPosition& subexpressionDivot, int subexpressionOffset)
{
ASSERT(subexpressionDivot.offset <= divot().offset);
// Overflow means we can't do this safely, so just point at the primary divot,
// divotLine, or divotLineStart.
if ((divot() - subexpressionDivot.offset) & ~0xFFFF)
return;
if ((divot().line - subexpressionDivot.line) & ~0xFFFF)
return;
if ((divot().lineStartOffset - subexpressionDivot.lineStartOffset) & ~0xFFFF)
return;
if ((divotEnd() - subexpressionOffset) & ~0xFFFF)
return;
m_subexpressionDivotOffset = divot() - subexpressionDivot.offset;
m_subexpressionEndOffset = divotEnd() - subexpressionOffset;
m_subexpressionLineOffset = divot().line - subexpressionDivot.line;
m_subexpressionLineStartOffset = divot().lineStartOffset - subexpressionDivot.lineStartOffset;
}
JSTextPosition subexpressionDivot()
{
int newLine = divot().line - m_subexpressionLineOffset;
int newOffset = divot().offset - m_subexpressionDivotOffset;
int newLineStartOffset = divot().lineStartOffset - m_subexpressionLineStartOffset;
return JSTextPosition(newLine, newOffset, newLineStartOffset);
}
JSTextPosition subexpressionStart() { return divotStart(); }
JSTextPosition subexpressionEnd() { return divotEnd() - static_cast<int>(m_subexpressionEndOffset); }
protected:
uint16_t m_subexpressionDivotOffset;
uint16_t m_subexpressionEndOffset;
uint16_t m_subexpressionLineOffset;
uint16_t m_subexpressionLineStartOffset;
};
class ThrowablePrefixedSubExpressionData : public ThrowableExpressionData {
public:
ThrowablePrefixedSubExpressionData()
: m_subexpressionDivotOffset(0)
, m_subexpressionStartOffset(0)
, m_subexpressionLineOffset(0)
, m_subexpressionLineStartOffset(0)
{
}
ThrowablePrefixedSubExpressionData(const JSTextPosition& divot, const JSTextPosition& start, const JSTextPosition& end)
: ThrowableExpressionData(divot, start, end)
, m_subexpressionDivotOffset(0)
, m_subexpressionStartOffset(0)
, m_subexpressionLineOffset(0)
, m_subexpressionLineStartOffset(0)
{
}
void setSubexpressionInfo(const JSTextPosition& subexpressionDivot, int subexpressionOffset)
{
ASSERT(subexpressionDivot.offset >= divot().offset);
// Overflow means we can't do this safely, so just point at the primary divot,
// divotLine, or divotLineStart.
if ((subexpressionDivot.offset - divot()) & ~0xFFFF)
return;
if ((subexpressionDivot.line - divot().line) & ~0xFFFF)
return;
if ((subexpressionDivot.lineStartOffset - divot().lineStartOffset) & ~0xFFFF)
return;
if ((subexpressionOffset - divotStart()) & ~0xFFFF)
return;
m_subexpressionDivotOffset = subexpressionDivot.offset - divot();
m_subexpressionStartOffset = subexpressionOffset - divotStart();
m_subexpressionLineOffset = subexpressionDivot.line - divot().line;
m_subexpressionLineStartOffset = subexpressionDivot.lineStartOffset - divot().lineStartOffset;
}
JSTextPosition subexpressionDivot()
{
int newLine = divot().line + m_subexpressionLineOffset;
int newOffset = divot().offset + m_subexpressionDivotOffset;
int newLineStartOffset = divot().lineStartOffset + m_subexpressionLineStartOffset;
return JSTextPosition(newLine, newOffset, newLineStartOffset);
}
JSTextPosition subexpressionStart() { return divotStart() + static_cast<int>(m_subexpressionStartOffset); }
JSTextPosition subexpressionEnd() { return divotEnd(); }
protected:
uint16_t m_subexpressionDivotOffset;
uint16_t m_subexpressionStartOffset;
uint16_t m_subexpressionLineOffset;
uint16_t m_subexpressionLineStartOffset;
};
class RegExpNode : public ExpressionNode, public ThrowableExpressionData {
public:
RegExpNode(const JSTokenLocation&, const Identifier& pattern, const Identifier& flags);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
const Identifier& m_pattern;
const Identifier& m_flags;
};
class ThisNode : public ExpressionNode {
public:
ThisNode(const JSTokenLocation&);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
};
class ResolveNode : public ExpressionNode {
public:
ResolveNode(const JSTokenLocation&, const Identifier&, const JSTextPosition& start);
const Identifier& identifier() const { return m_ident; }
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
virtual bool isPure(BytecodeGenerator&) const override;
virtual bool isLocation() const override { return true; }
virtual bool isResolveNode() const override { return true; }
const Identifier& m_ident;
JSTextPosition m_start;
};
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(const JSTokenLocation&, int elision);
ArrayNode(const JSTokenLocation&, ElementNode*);
ArrayNode(const JSTokenLocation&, int elision, ElementNode*);
ArgumentListNode* toArgumentList(VM*, int, int) const;
ElementNode* elements() const { ASSERT(isSimpleArray()); return m_element; }
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
virtual bool isSimpleArray() const override;
ElementNode* m_element;
int m_elision;
bool m_optional;
};
class PropertyNode : public ParserArenaFreeable {
public:
enum Type { Constant = 1, Getter = 2, Setter = 4 };
PropertyNode(VM*, const Identifier&, ExpressionNode*, Type);
PropertyNode(VM*, double, ExpressionNode*, Type);
PropertyNode(VM*, ExpressionNode* propertyName, ExpressionNode*, Type);
ExpressionNode* expressionName() const { return m_expression; }
const Identifier* name() const { return m_name; }
Type type() const { return m_type; }
private:
friend class PropertyListNode;
const Identifier* m_name;
ExpressionNode* m_expression;
ExpressionNode* m_assign;
Type m_type;
};
class PropertyListNode : public ExpressionNode {
public:
PropertyListNode(const JSTokenLocation&, PropertyNode*);
PropertyListNode(const JSTokenLocation&, PropertyNode*, PropertyListNode*);
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
private:
PropertyNode* m_node;
PropertyListNode* m_next;
};
class ObjectLiteralNode : public ExpressionNode {
public:
ObjectLiteralNode(const JSTokenLocation&);
ObjectLiteralNode(const JSTokenLocation&, PropertyListNode*);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
PropertyListNode* m_list;
};
class BracketAccessorNode : public ExpressionNode, public ThrowableExpressionData {
public:
BracketAccessorNode(const JSTokenLocation&, ExpressionNode* base, ExpressionNode* subscript, bool subscriptHasAssignments);
ExpressionNode* base() const { return m_base; }
ExpressionNode* subscript() const { return m_subscript; }
bool subscriptHasAssignments() const { return m_subscriptHasAssignments; }
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
virtual bool isLocation() const override { return true; }
virtual bool isBracketAccessorNode() const override { return true; }
ExpressionNode* m_base;
ExpressionNode* m_subscript;
bool m_subscriptHasAssignments;
};
class DotAccessorNode : public ExpressionNode, public ThrowableExpressionData {
public:
DotAccessorNode(const JSTokenLocation&, ExpressionNode* base, const Identifier&);
ExpressionNode* base() const { return m_base; }
const Identifier& identifier() const { return m_ident; }
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
virtual bool isLocation() const override { return true; }
virtual bool isDotAccessorNode() const override { return true; }
ExpressionNode* m_base;
const Identifier& m_ident;
};
class SpreadExpressionNode : public ExpressionNode, public ThrowableExpressionData {
public:
SpreadExpressionNode(const JSTokenLocation&, ExpressionNode*);
ExpressionNode* expression() const { return m_expression; }
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
virtual bool isSpreadExpression() const override { return true; }
ExpressionNode* m_expression;
};
class ArgumentListNode : public ExpressionNode {
public:
ArgumentListNode(const JSTokenLocation&, ExpressionNode*);
ArgumentListNode(const JSTokenLocation&, ArgumentListNode*, ExpressionNode*);
ArgumentListNode* m_next;
ExpressionNode* m_expr;
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
};
class ArgumentsNode : public ParserArenaFreeable {
public:
ArgumentsNode();
ArgumentsNode(ArgumentListNode*);
ArgumentListNode* m_listNode;
};
class NewExprNode : public ExpressionNode, public ThrowableExpressionData {
public:
NewExprNode(const JSTokenLocation&, ExpressionNode*);
NewExprNode(const JSTokenLocation&, ExpressionNode*, ArgumentsNode*);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
ExpressionNode* m_expr;
ArgumentsNode* m_args;
};
class EvalFunctionCallNode : public ExpressionNode, public ThrowableExpressionData {
public:
EvalFunctionCallNode(const JSTokenLocation&, ArgumentsNode*, const JSTextPosition& divot, const JSTextPosition& divotStart, const JSTextPosition& divotEnd);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
ArgumentsNode* m_args;
};
class FunctionCallValueNode : public ExpressionNode, public ThrowableExpressionData {
public:
FunctionCallValueNode(const JSTokenLocation&, ExpressionNode*, ArgumentsNode*, const JSTextPosition& divot, const JSTextPosition& divotStart, const JSTextPosition& divotEnd);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
ExpressionNode* m_expr;
ArgumentsNode* m_args;
};
class FunctionCallResolveNode : public ExpressionNode, public ThrowableExpressionData {
public:
FunctionCallResolveNode(const JSTokenLocation&, const Identifier&, ArgumentsNode*, const JSTextPosition& divot, const JSTextPosition& divotStart, const JSTextPosition& divotEnd);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
const Identifier& m_ident;
ArgumentsNode* m_args;
};
class FunctionCallBracketNode : public ExpressionNode, public ThrowableSubExpressionData {
public:
FunctionCallBracketNode(const JSTokenLocation&, ExpressionNode* base, ExpressionNode* subscript, ArgumentsNode*, const JSTextPosition& divot, const JSTextPosition& divotStart, const JSTextPosition& divotEnd);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
ExpressionNode* m_base;
ExpressionNode* m_subscript;
ArgumentsNode* m_args;
};
class FunctionCallDotNode : public ExpressionNode, public ThrowableSubExpressionData {
public:
FunctionCallDotNode(const JSTokenLocation&, ExpressionNode* base, const Identifier&, ArgumentsNode*, const JSTextPosition& divot, const JSTextPosition& divotStart, const JSTextPosition& divotEnd);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
protected:
ExpressionNode* m_base;
const Identifier& m_ident;
ArgumentsNode* m_args;
};
class CallFunctionCallDotNode : public FunctionCallDotNode {
public:
CallFunctionCallDotNode(const JSTokenLocation&, ExpressionNode* base, const Identifier&, ArgumentsNode*, const JSTextPosition& divot, const JSTextPosition& divotStart, const JSTextPosition& divotEnd);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
};
class ApplyFunctionCallDotNode : public FunctionCallDotNode {
public:
ApplyFunctionCallDotNode(const JSTokenLocation&, ExpressionNode* base, const Identifier&, ArgumentsNode*, const JSTextPosition& divot, const JSTextPosition& divotStart, const JSTextPosition& divotEnd);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
};
class DeleteResolveNode : public ExpressionNode, public ThrowableExpressionData {
public:
DeleteResolveNode(const JSTokenLocation&, const Identifier&, const JSTextPosition& divot, const JSTextPosition& divotStart, const JSTextPosition& divotEnd);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
const Identifier& m_ident;
};
class DeleteBracketNode : public ExpressionNode, public ThrowableExpressionData {
public:
DeleteBracketNode(const JSTokenLocation&, ExpressionNode* base, ExpressionNode* subscript, const JSTextPosition& divot, const JSTextPosition& divotStart, const JSTextPosition& divotEnd);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
ExpressionNode* m_base;
ExpressionNode* m_subscript;
};
class DeleteDotNode : public ExpressionNode, public ThrowableExpressionData {
public:
DeleteDotNode(const JSTokenLocation&, ExpressionNode* base, const Identifier&, const JSTextPosition& divot, const JSTextPosition& divotStart, const JSTextPosition& divotEnd);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
ExpressionNode* m_base;
const Identifier& m_ident;
};
class DeleteValueNode : public ExpressionNode {
public:
DeleteValueNode(const JSTokenLocation&, ExpressionNode*);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
ExpressionNode* m_expr;
};
class VoidNode : public ExpressionNode {
public:
VoidNode(const JSTokenLocation&, ExpressionNode*);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
ExpressionNode* m_expr;
};
class TypeOfResolveNode : public ExpressionNode {
public:
TypeOfResolveNode(const JSTokenLocation&, const Identifier&);
const Identifier& identifier() const { return m_ident; }
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
const Identifier& m_ident;
};
class TypeOfValueNode : public ExpressionNode {
public:
TypeOfValueNode(const JSTokenLocation&, ExpressionNode*);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
ExpressionNode* m_expr;
};
class PrefixNode : public ExpressionNode, public ThrowablePrefixedSubExpressionData {
public:
PrefixNode(const JSTokenLocation&, ExpressionNode*, Operator, const JSTextPosition& divot, const JSTextPosition& divotStart, const JSTextPosition& divotEnd);
protected:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
virtual RegisterID* emitResolve(BytecodeGenerator&, RegisterID* = 0);
virtual RegisterID* emitBracket(BytecodeGenerator&, RegisterID* = 0);
virtual RegisterID* emitDot(BytecodeGenerator&, RegisterID* = 0);
ExpressionNode* m_expr;
Operator m_operator;
};
class PostfixNode : public PrefixNode {
public:
PostfixNode(const JSTokenLocation&, ExpressionNode*, Operator, const JSTextPosition& divot, const JSTextPosition& divotStart, const JSTextPosition& divotEnd);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
virtual RegisterID* emitResolve(BytecodeGenerator&, RegisterID* = 0) override;
virtual RegisterID* emitBracket(BytecodeGenerator&, RegisterID* = 0) override;
virtual RegisterID* emitDot(BytecodeGenerator&, RegisterID* = 0) override;
};
class UnaryOpNode : public ExpressionNode {
public:
UnaryOpNode(const JSTokenLocation&, ResultType, ExpressionNode*, OpcodeID);
protected:
ExpressionNode* expr() { return m_expr; }
const ExpressionNode* expr() const { return m_expr; }
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
OpcodeID opcodeID() const { return m_opcodeID; }
ExpressionNode* m_expr;
OpcodeID m_opcodeID;
};
class UnaryPlusNode : public UnaryOpNode {
public:
UnaryPlusNode(const JSTokenLocation&, ExpressionNode*);
private:
virtual ExpressionNode* stripUnaryPlus() override { return expr(); }
};
class NegateNode : public UnaryOpNode {
public:
NegateNode(const JSTokenLocation&, ExpressionNode*);
};
class BitwiseNotNode : public ExpressionNode {
public:
BitwiseNotNode(const JSTokenLocation&, ExpressionNode*);
protected:
ExpressionNode* expr() { return m_expr; }
const ExpressionNode* expr() const { return m_expr; }
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
ExpressionNode* m_expr;
};
class LogicalNotNode : public UnaryOpNode {
public:
LogicalNotNode(const JSTokenLocation&, ExpressionNode*);
private:
virtual void emitBytecodeInConditionContext(BytecodeGenerator&, Label* trueTarget, Label* falseTarget, FallThroughMode) override;
};
class BinaryOpNode : public ExpressionNode {
public:
BinaryOpNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, OpcodeID, bool rightHasAssignments);
BinaryOpNode(const JSTokenLocation&, ResultType, ExpressionNode* expr1, ExpressionNode* expr2, OpcodeID, bool rightHasAssignments);
RegisterID* emitStrcat(BytecodeGenerator& generator, RegisterID* destination, RegisterID* lhs = 0, ReadModifyResolveNode* emitExpressionInfoForMe = 0);
virtual void emitBytecodeInConditionContext(BytecodeGenerator&, Label* trueTarget, Label* falseTarget, FallThroughMode) override;
ExpressionNode* lhs() { return m_expr1; };
ExpressionNode* rhs() { return m_expr2; };
private:
void tryFoldToBranch(BytecodeGenerator&, TriState& branchCondition, ExpressionNode*& branchExpression);
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
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(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class DivNode : public BinaryOpNode {
public:
DivNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class ModNode : public BinaryOpNode {
public:
ModNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class AddNode : public BinaryOpNode {
public:
AddNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
virtual bool isAdd() const override { return true; }
};
class SubNode : public BinaryOpNode {
public:
SubNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
virtual bool isSubtract() const override { return true; }
};
class LeftShiftNode : public BinaryOpNode {
public:
LeftShiftNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class RightShiftNode : public BinaryOpNode {
public:
RightShiftNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class UnsignedRightShiftNode : public BinaryOpNode {
public:
UnsignedRightShiftNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class LessNode : public BinaryOpNode {
public:
LessNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class GreaterNode : public BinaryOpNode {
public:
GreaterNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class LessEqNode : public BinaryOpNode {
public:
LessEqNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class GreaterEqNode : public BinaryOpNode {
public:
GreaterEqNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class ThrowableBinaryOpNode : public BinaryOpNode, public ThrowableExpressionData {
public:
ThrowableBinaryOpNode(const JSTokenLocation&, ResultType, ExpressionNode* expr1, ExpressionNode* expr2, OpcodeID, bool rightHasAssignments);
ThrowableBinaryOpNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, OpcodeID, bool rightHasAssignments);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
};
class InstanceOfNode : public ThrowableBinaryOpNode {
public:
InstanceOfNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
};
class InNode : public ThrowableBinaryOpNode {
public:
InNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class EqualNode : public BinaryOpNode {
public:
EqualNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
};
class NotEqualNode : public BinaryOpNode {
public:
NotEqualNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class StrictEqualNode : public BinaryOpNode {
public:
StrictEqualNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
};
class NotStrictEqualNode : public BinaryOpNode {
public:
NotStrictEqualNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class BitAndNode : public BinaryOpNode {
public:
BitAndNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class BitOrNode : public BinaryOpNode {
public:
BitOrNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
class BitXOrNode : public BinaryOpNode {
public:
BitXOrNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments);
};
// m_expr1 && m_expr2, m_expr1 || m_expr2
class LogicalOpNode : public ExpressionNode {
public:
LogicalOpNode(const JSTokenLocation&, ExpressionNode* expr1, ExpressionNode* expr2, LogicalOperator);
private:
virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) override;
virtual void emitBytecodeInConditionContext(BytecodeGenerator&, Label* trueTarget, Label* falseTarget, FallThroughMode) override;
ExpressionNode* m_expr1;
ExpressionNode* m_expr2;
LogicalOperator m_operator;
};
// The ternary operator, "m_logical ? m_expr1 : m_expr2"
class ConditionalNode : public ExpressionNode {
public:
ConditionalNode(const JSTokenLocation&, ExpressionNode* logical, ExpressionNode* expr1, ExpressionNode* expr2);