[apple/javascriptcore.git] / parser / SyntaxChecker.h

/*
 * Copyright (C) 2010 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef SyntaxChecker_h
#define SyntaxChecker_h

#include "Lexer.h"
#include <yarr/YarrSyntaxChecker.h>

namespace JSC {
class SyntaxChecker {
public:
    struct BinaryExprContext {
        BinaryExprContext(SyntaxChecker& context)
            : m_context(&context)
        {
            m_context->m_topBinaryExprs.append(m_context->m_topBinaryExpr);
            m_context->m_topBinaryExpr = 0;
        }
        ~BinaryExprContext()
        {
            m_context->m_topBinaryExpr = m_context->m_topBinaryExprs.last();
            m_context->m_topBinaryExprs.removeLast();
        }
    private:
        SyntaxChecker* m_context;
    };
    struct UnaryExprContext {
        UnaryExprContext(SyntaxChecker& context)
            : m_context(&context)
        {
            m_context->m_topUnaryTokens.append(m_context->m_topUnaryToken);
            m_context->m_topUnaryToken = 0;
        }
        ~UnaryExprContext()
        {
            m_context->m_topUnaryToken = m_context->m_topUnaryTokens.last();
            m_context->m_topUnaryTokens.removeLast();
        }
    private:
        SyntaxChecker* m_context;
    };
    
    SyntaxChecker(JSGlobalData* , Lexer*)
    {
    }

    typedef SyntaxChecker FunctionBodyBuilder;
    enum { NoneExpr = 0,
        ResolveEvalExpr, ResolveExpr, NumberExpr, StringExpr,
        ThisExpr, NullExpr, BoolExpr, RegExpExpr, ObjectLiteralExpr,
        FunctionExpr, BracketExpr, DotExpr, CallExpr,
        NewExpr, PreExpr, PostExpr, UnaryExpr, BinaryExpr,
        ConditionalExpr, AssignmentExpr, TypeofExpr,
        DeleteExpr, ArrayLiteralExpr };
    typedef int ExpressionType;

    typedef ExpressionType Expression;
    typedef int SourceElements;
    typedef int Arguments;
    typedef ExpressionType Comma;
    struct Property {
        ALWAYS_INLINE Property(void* = 0)
            : type((PropertyNode::Type)0)
        {
        }
        ALWAYS_INLINE Property(const Identifier* ident, PropertyNode::Type ty)
        : name(ident)
        , type(ty)
        {
        }
        ALWAYS_INLINE Property(PropertyNode::Type ty)
            : name(0)
            , type(ty)
        {
        }
        ALWAYS_INLINE bool operator!() { return !type; }
        const Identifier* name;
        PropertyNode::Type type;
    };
    typedef int PropertyList;
    typedef int ElementList;
    typedef int ArgumentsList;
    typedef int FormalParameterList;
    typedef int FunctionBody;
    typedef int Statement;
    typedef int ClauseList;
    typedef int Clause;
    typedef int ConstDeclList;
    typedef int BinaryOperand;
    
    static const bool CreatesAST = false;
    static const bool NeedsFreeVariableInfo = false;
    static const bool CanUseFunctionCache = true;
    static const unsigned DontBuildKeywords = Lexer::DontBuildKeywords;
    static const unsigned DontBuildStrings = Lexer::DontBuildStrings;

    int createSourceElements() { return 1; }
    ExpressionType makeFunctionCallNode(int, int, int, int, int) { return CallExpr; }
    void appendToComma(ExpressionType& base, ExpressionType right) { base = right; }
    ExpressionType createCommaExpr(ExpressionType, ExpressionType right) { return right; }
    ExpressionType makeAssignNode(ExpressionType, Operator, ExpressionType, bool, bool, int, int, int) { return AssignmentExpr; }
    ExpressionType makePrefixNode(ExpressionType, Operator, int, int, int) { return PreExpr; }
    ExpressionType makePostfixNode(ExpressionType, Operator, int, int, int) { return PostExpr; }
    ExpressionType makeTypeOfNode(ExpressionType) { return TypeofExpr; }
    ExpressionType makeDeleteNode(ExpressionType, int, int, int) { return DeleteExpr; }
    ExpressionType makeNegateNode(ExpressionType) { return UnaryExpr; }
    ExpressionType makeBitwiseNotNode(ExpressionType) { return UnaryExpr; }
    ExpressionType createLogicalNot(ExpressionType) { return UnaryExpr; }
    ExpressionType createUnaryPlus(ExpressionType) { return UnaryExpr; }
    ExpressionType createVoid(ExpressionType) { return UnaryExpr; }
    ExpressionType thisExpr() { return ThisExpr; }
    ExpressionType createResolve(const Identifier*, int) { return ResolveExpr; }
    ExpressionType createObjectLiteral() { return ObjectLiteralExpr; }
    ExpressionType createObjectLiteral(int) { return ObjectLiteralExpr; }
    ExpressionType createArray(int) { return ArrayLiteralExpr; }
    ExpressionType createArray(int, int) { return ArrayLiteralExpr; }
    ExpressionType createNumberExpr(double) { return NumberExpr; }
    ExpressionType createString(const Identifier*) { return StringExpr; }
    ExpressionType createBoolean(bool) { return BoolExpr; }
    ExpressionType createNull() { return NullExpr; }
    ExpressionType createBracketAccess(ExpressionType, ExpressionType, bool, int, int, int) { return BracketExpr; }
    ExpressionType createDotAccess(ExpressionType, const Identifier*, int, int, int) { return DotExpr; }
    ExpressionType createRegExp(const Identifier& pattern, const Identifier&, int) { return Yarr::checkSyntax(pattern.ustring()) ? 0 : RegExpExpr; }
    ExpressionType createNewExpr(ExpressionType, int, int, int, int) { return NewExpr; }
    ExpressionType createNewExpr(ExpressionType, int, int) { return NewExpr; }
    ExpressionType createConditionalExpr(ExpressionType, ExpressionType, ExpressionType) { return ConditionalExpr; }
    ExpressionType createAssignResolve(const Identifier&, ExpressionType, bool, int, int, int) { return AssignmentExpr; }
    ExpressionType createFunctionExpr(const Identifier*, int, int, int, int, int, int) { return FunctionExpr; }
    int createFunctionBody(bool) { return 1; }
    int createArguments() { return 1; }
    int createArguments(int) { return 1; }
    int createArgumentsList(int) { return 1; }
    int createArgumentsList(int, int) { return 1; }
    template <bool complete> Property createProperty(const Identifier* name, int, PropertyNode::Type type)
    {
        if (!complete)
            return Property(type);
        ASSERT(name);
        return Property(name, type);
    }
    template <bool complete> Property createProperty(JSGlobalData* globalData, double name, int, PropertyNode::Type type)
    {
        if (!complete)
            return Property(type);
        return Property(&globalData->parser->arena().identifierArena().makeNumericIdentifier(globalData, name), type);
    }
    int createPropertyList(Property) { return 1; }
    int createPropertyList(Property, int) { return 1; }
    int createElementList(int, int) { return 1; }
    int createElementList(int, int, int) { return 1; }
    int createFormalParameterList(const Identifier&) { return 1; }
    int createFormalParameterList(int, const Identifier&) { return 1; }
    int createClause(int, int) { return 1; }
    int createClauseList(int) { return 1; }
    int createClauseList(int, int) { return 1; }
    void setUsesArguments(int) { }
    int createFuncDeclStatement(const Identifier*, int, int, int, int, int, int) { return 1; }
    int createBlockStatement(int, int, int) { return 1; }
    int createExprStatement(int, int, int) { return 1; }
    int createIfStatement(int, int, int, int) { return 1; }
    int createIfStatement(int, int, int, int, int) { return 1; }
    int createForLoop(int, int, int, int, bool, int, int) { return 1; }
    int createForInLoop(const Identifier*, int, int, int, int, int, int, int, int, int, int) { return 1; }
    int createForInLoop(int, int, int, int, int, int, int, int) { return 1; }
    int createEmptyStatement() { return 1; }
    int createVarStatement(int, int, int) { return 1; }
    int createReturnStatement(int, int, int, int, int) { return 1; }
    int createBreakStatement(int, int, int, int) { return 1; }
    int createBreakStatement(const Identifier*, int, int, int, int) { return 1; }
    int createContinueStatement(int, int, int, int) { return 1; }
    int createContinueStatement(const Identifier*, int, int, int, int) { return 1; }
    int createTryStatement(int, const Identifier*, bool, int, int, int, int) { return 1; }
    int createSwitchStatement(int, int, int, int, int, int) { return 1; }
    int createWhileStatement(int, int, int, int) { return 1; }
    int createWithStatement(int, int, int, int, int, int) { return 1; }
    int createDoWhileStatement(int, int, int, int) { return 1; }
    int createLabelStatement(const Identifier*, int, int, int) { return 1; }
    int createThrowStatement(int, int, int, int, int) { return 1; }
    int createDebugger(int, int) { return 1; }
    int createConstStatement(int, int, int) { return 1; }
    int appendConstDecl(int, const Identifier*, int) { return 1; }
    template <bool strict> Property createGetterOrSetterProperty(PropertyNode::Type type, const Identifier* name, int, int, int, int, int, int)
    {
        ASSERT(name);
        if (!strict)
            return Property(type);
        return Property(name, type);
    }

    void appendStatement(int, int) { }
    void addVar(const Identifier*, bool) { }
    int combineCommaNodes(int, int) { return 1; }
    int evalCount() const { return 0; }
    void appendBinaryExpressionInfo(int& operandStackDepth, int expr, int, int, int, bool)
    {
        if (!m_topBinaryExpr)
            m_topBinaryExpr = expr;
        else
            m_topBinaryExpr = BinaryExpr;
        operandStackDepth++;
    }
    
    // Logic to handle datastructures used during parsing of binary expressions
    void operatorStackPop(int& operatorStackDepth) { operatorStackDepth--; }
    bool operatorStackHasHigherPrecedence(int&, int) { return true; }
    BinaryOperand getFromOperandStack(int) { return m_topBinaryExpr; }
    void shrinkOperandStackBy(int& operandStackDepth, int amount) { operandStackDepth -= amount; }
    void appendBinaryOperation(int& operandStackDepth, int&, BinaryOperand, BinaryOperand) { operandStackDepth++; }
    void operatorStackAppend(int& operatorStackDepth, int, int) { operatorStackDepth++; }
    int popOperandStack(int&) { int res = m_topBinaryExpr; m_topBinaryExpr = 0; return res; }
    
    void appendUnaryToken(int& stackDepth, int tok, int) { stackDepth = 1; m_topUnaryToken = tok; }
    int unaryTokenStackLastType(int&) { return m_topUnaryToken; }
    int unaryTokenStackLastStart(int&) { return 0; }
    void unaryTokenStackRemoveLast(int& stackDepth) { stackDepth = 0; }
    
    void assignmentStackAppend(int, int, int, int, int, Operator) { }
    int createAssignment(int, int, int, int, int) { ASSERT_NOT_REACHED(); return 1; }
    const Identifier& getName(const Property& property) const { ASSERT(property.name); return *property.name; }
    PropertyNode::Type getType(const Property& property) const { return property.type; }
    bool isResolve(ExpressionType expr) const { return expr == ResolveExpr || expr == ResolveEvalExpr; }
    
private:
    int m_topBinaryExpr;
    int m_topUnaryToken;
    Vector<int, 8> m_topBinaryExprs;
    Vector<int, 8> m_topUnaryTokens;
};

}

#endif
Commit	Line	Data
14957cd0 A	1	/*
	2	* Copyright (C) 2010 Apple Inc. All rights reserved.
	3	*
	4	* Redistribution and use in source and binary forms, with or without
	5	* modification, are permitted provided that the following conditions
	6	* are met:
	7	* 1. Redistributions of source code must retain the above copyright
	8	* notice, this list of conditions and the following disclaimer.
	9	* 2. Redistributions in binary form must reproduce the above copyright
	10	* notice, this list of conditions and the following disclaimer in the
	11	* documentation and/or other materials provided with the distribution.
	12	*
	13	* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
	14	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
	15	* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	16	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
	17	* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	18	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	19	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	20	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	21	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	22	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
	23	* THE POSSIBILITY OF SUCH DAMAGE.
	24	*/
	25
	26	#ifndef SyntaxChecker_h
	27	#define SyntaxChecker_h
	28
	29	#include "Lexer.h"
	30	#include <yarr/YarrSyntaxChecker.h>
	31
	32	namespace JSC {
	33	class SyntaxChecker {
	34	public:
	35	struct BinaryExprContext {
	36	BinaryExprContext(SyntaxChecker& context)
	37	: m_context(&context)
	38	{
	39	m_context->m_topBinaryExprs.append(m_context->m_topBinaryExpr);
	40	m_context->m_topBinaryExpr = 0;
	41	}
	42	~BinaryExprContext()
	43	{
	44	m_context->m_topBinaryExpr = m_context->m_topBinaryExprs.last();
	45	m_context->m_topBinaryExprs.removeLast();
	46	}
	47	private:
	48	SyntaxChecker* m_context;
	49	};
	50	struct UnaryExprContext {
	51	UnaryExprContext(SyntaxChecker& context)
	52	: m_context(&context)
	53	{
	54	m_context->m_topUnaryTokens.append(m_context->m_topUnaryToken);
	55	m_context->m_topUnaryToken = 0;
	56	}
	57	~UnaryExprContext()
	58	{
	59	m_context->m_topUnaryToken = m_context->m_topUnaryTokens.last();
	60	m_context->m_topUnaryTokens.removeLast();
	61	}
	62	private:
	63	SyntaxChecker* m_context;
	64	};
65
66	SyntaxChecker(JSGlobalData* , Lexer*)
67	{
68	}
69
70	typedef SyntaxChecker FunctionBodyBuilder;
71	enum { NoneExpr = 0,
72	ResolveEvalExpr, ResolveExpr, NumberExpr, StringExpr,
73	ThisExpr, NullExpr, BoolExpr, RegExpExpr, ObjectLiteralExpr,
74	FunctionExpr, BracketExpr, DotExpr, CallExpr,
75	NewExpr, PreExpr, PostExpr, UnaryExpr, BinaryExpr,
76	ConditionalExpr, AssignmentExpr, TypeofExpr,
77	DeleteExpr, ArrayLiteralExpr };
78	typedef int ExpressionType;
79
80	typedef ExpressionType Expression;
81	typedef int SourceElements;
82	typedef int Arguments;
83	typedef ExpressionType Comma;
84	struct Property {
85	ALWAYS_INLINE Property(void* = 0)
86	: type((PropertyNode::Type)0)
87	{
88	}
89	ALWAYS_INLINE Property(const Identifier* ident, PropertyNode::Type ty)
90	: name(ident)
91	, type(ty)
92	{
93	}
94	ALWAYS_INLINE Property(PropertyNode::Type ty)
95	: name(0)
96	, type(ty)
97	{
98	}
99	ALWAYS_INLINE bool operator!() { return !type; }
100	const Identifier* name;
101	PropertyNode::Type type;
102	};
103	typedef int PropertyList;
104	typedef int ElementList;
105	typedef int ArgumentsList;
106	typedef int FormalParameterList;
107	typedef int FunctionBody;
108	typedef int Statement;
109	typedef int ClauseList;
110	typedef int Clause;
111	typedef int ConstDeclList;
112	typedef int BinaryOperand;
113
114	static const bool CreatesAST = false;
115	static const bool NeedsFreeVariableInfo = false;
116	static const bool CanUseFunctionCache = true;
117	static const unsigned DontBuildKeywords = Lexer::DontBuildKeywords;
118	static const unsigned DontBuildStrings = Lexer::DontBuildStrings;
119
120	int createSourceElements() { return 1; }
121	ExpressionType makeFunctionCallNode(int, int, int, int, int) { return CallExpr; }
122	void appendToComma(ExpressionType& base, ExpressionType right) { base = right; }
123	ExpressionType createCommaExpr(ExpressionType, ExpressionType right) { return right; }
124	ExpressionType makeAssignNode(ExpressionType, Operator, ExpressionType, bool, bool, int, int, int) { return AssignmentExpr; }
125	ExpressionType makePrefixNode(ExpressionType, Operator, int, int, int) { return PreExpr; }
126	ExpressionType makePostfixNode(ExpressionType, Operator, int, int, int) { return PostExpr; }
127	ExpressionType makeTypeOfNode(ExpressionType) { return TypeofExpr; }
128	ExpressionType makeDeleteNode(ExpressionType, int, int, int) { return DeleteExpr; }
129	ExpressionType makeNegateNode(ExpressionType) { return UnaryExpr; }
130	ExpressionType makeBitwiseNotNode(ExpressionType) { return UnaryExpr; }
131	ExpressionType createLogicalNot(ExpressionType) { return UnaryExpr; }
132	ExpressionType createUnaryPlus(ExpressionType) { return UnaryExpr; }
133	ExpressionType createVoid(ExpressionType) { return UnaryExpr; }
134	ExpressionType thisExpr() { return ThisExpr; }
135	ExpressionType createResolve(const Identifier*, int) { return ResolveExpr; }
136	ExpressionType createObjectLiteral() { return ObjectLiteralExpr; }
137	ExpressionType createObjectLiteral(int) { return ObjectLiteralExpr; }
138	ExpressionType createArray(int) { return ArrayLiteralExpr; }
139	ExpressionType createArray(int, int) { return ArrayLiteralExpr; }
140	ExpressionType createNumberExpr(double) { return NumberExpr; }
141	ExpressionType createString(const Identifier*) { return StringExpr; }
142	ExpressionType createBoolean(bool) { return BoolExpr; }
143	ExpressionType createNull() { return NullExpr; }
144	ExpressionType createBracketAccess(ExpressionType, ExpressionType, bool, int, int, int) { return BracketExpr; }
145	ExpressionType createDotAccess(ExpressionType, const Identifier*, int, int, int) { return DotExpr; }
146	ExpressionType createRegExp(const Identifier& pattern, const Identifier&, int) { return Yarr::checkSyntax(pattern.ustring()) ? 0 : RegExpExpr; }
147	ExpressionType createNewExpr(ExpressionType, int, int, int, int) { return NewExpr; }
148	ExpressionType createNewExpr(ExpressionType, int, int) { return NewExpr; }
149	ExpressionType createConditionalExpr(ExpressionType, ExpressionType, ExpressionType) { return ConditionalExpr; }
150	ExpressionType createAssignResolve(const Identifier&, ExpressionType, bool, int, int, int) { return AssignmentExpr; }
151	ExpressionType createFunctionExpr(const Identifier*, int, int, int, int, int, int) { return FunctionExpr; }
152	int createFunctionBody(bool) { return 1; }
153	int createArguments() { return 1; }
154	int createArguments(int) { return 1; }
155	int createArgumentsList(int) { return 1; }
156	int createArgumentsList(int, int) { return 1; }
157	template <bool complete> Property createProperty(const Identifier* name, int, PropertyNode::Type type)
158	{
159	if (!complete)
160	return Property(type);
161	ASSERT(name);
162	return Property(name, type);
163	}
164	template <bool complete> Property createProperty(JSGlobalData* globalData, double name, int, PropertyNode::Type type)
165	{
166	if (!complete)
167	return Property(type);
168	return Property(&globalData->parser->arena().identifierArena().makeNumericIdentifier(globalData, name), type);
169	}
170	int createPropertyList(Property) { return 1; }
171	int createPropertyList(Property, int) { return 1; }
172	int createElementList(int, int) { return 1; }
173	int createElementList(int, int, int) { return 1; }
174	int createFormalParameterList(const Identifier&) { return 1; }
175	int createFormalParameterList(int, const Identifier&) { return 1; }
176	int createClause(int, int) { return 1; }
177	int createClauseList(int) { return 1; }
178	int createClauseList(int, int) { return 1; }
179	void setUsesArguments(int) { }
180	int createFuncDeclStatement(const Identifier*, int, int, int, int, int, int) { return 1; }
181	int createBlockStatement(int, int, int) { return 1; }
182	int createExprStatement(int, int, int) { return 1; }
183	int createIfStatement(int, int, int, int) { return 1; }
184	int createIfStatement(int, int, int, int, int) { return 1; }
185	int createForLoop(int, int, int, int, bool, int, int) { return 1; }
186	int createForInLoop(const Identifier*, int, int, int, int, int, int, int, int, int, int) { return 1; }
187	int createForInLoop(int, int, int, int, int, int, int, int) { return 1; }
188	int createEmptyStatement() { return 1; }
189	int createVarStatement(int, int, int) { return 1; }
190	int createReturnStatement(int, int, int, int, int) { return 1; }
191	int createBreakStatement(int, int, int, int) { return 1; }
192	int createBreakStatement(const Identifier*, int, int, int, int) { return 1; }
193	int createContinueStatement(int, int, int, int) { return 1; }
194	int createContinueStatement(const Identifier*, int, int, int, int) { return 1; }
195	int createTryStatement(int, const Identifier*, bool, int, int, int, int) { return 1; }
196	int createSwitchStatement(int, int, int, int, int, int) { return 1; }
197	int createWhileStatement(int, int, int, int) { return 1; }
198	int createWithStatement(int, int, int, int, int, int) { return 1; }
199	int createDoWhileStatement(int, int, int, int) { return 1; }
200	int createLabelStatement(const Identifier*, int, int, int) { return 1; }
201	int createThrowStatement(int, int, int, int, int) { return 1; }
202	int createDebugger(int, int) { return 1; }
203	int createConstStatement(int, int, int) { return 1; }
204	int appendConstDecl(int, const Identifier*, int) { return 1; }
205	template <bool strict> Property createGetterOrSetterProperty(PropertyNode::Type type, const Identifier* name, int, int, int, int, int, int)
206	{
207	ASSERT(name);
208	if (!strict)
209	return Property(type);
210	return Property(name, type);
211	}
212
213	void appendStatement(int, int) { }
214	void addVar(const Identifier*, bool) { }
215	int combineCommaNodes(int, int) { return 1; }
216	int evalCount() const { return 0; }
217	void appendBinaryExpressionInfo(int& operandStackDepth, int expr, int, int, int, bool)
218	{
219	if (!m_topBinaryExpr)
220	m_topBinaryExpr = expr;
221	else
222	m_topBinaryExpr = BinaryExpr;
223	operandStackDepth++;
224	}
225
226	// Logic to handle datastructures used during parsing of binary expressions
227	void operatorStackPop(int& operatorStackDepth) { operatorStackDepth--; }
228	bool operatorStackHasHigherPrecedence(int&, int) { return true; }
229	BinaryOperand getFromOperandStack(int) { return m_topBinaryExpr; }
230	void shrinkOperandStackBy(int& operandStackDepth, int amount) { operandStackDepth -= amount; }
231	void appendBinaryOperation(int& operandStackDepth, int&, BinaryOperand, BinaryOperand) { operandStackDepth++; }
232	void operatorStackAppend(int& operatorStackDepth, int, int) { operatorStackDepth++; }
233	int popOperandStack(int&) { int res = m_topBinaryExpr; m_topBinaryExpr = 0; return res; }
234
235	void appendUnaryToken(int& stackDepth, int tok, int) { stackDepth = 1; m_topUnaryToken = tok; }
236	int unaryTokenStackLastType(int&) { return m_topUnaryToken; }
237	int unaryTokenStackLastStart(int&) { return 0; }
238	void unaryTokenStackRemoveLast(int& stackDepth) { stackDepth = 0; }
239
240	void assignmentStackAppend(int, int, int, int, int, Operator) { }
241	int createAssignment(int, int, int, int, int) { ASSERT_NOT_REACHED(); return 1; }
242	const Identifier& getName(const Property& property) const { ASSERT(property.name); return *property.name; }
243	PropertyNode::Type getType(const Property& property) const { return property.type; }
244	bool isResolve(ExpressionType expr) const { return expr == ResolveExpr \|\| expr == ResolveEvalExpr; }
245
246	private:
247	int m_topBinaryExpr;
248	int m_topUnaryToken;
249	Vector<int, 8> m_topBinaryExprs;
250	Vector<int, 8> m_topUnaryTokens;
251	};
252
253	}
254
255	#endif