/**************************************************************************** ** ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the QtScript module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** No Commercial Usage ** This file contains pre-release code and may not be distributed. ** You may use this file in accordance with the terms and conditions ** contained in the Technology Preview License Agreement accompanying ** this package. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 2.1 requirements ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Nokia gives you certain additional ** rights. These rights are described in the Nokia Qt LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** If you have questions regarding the use of this file, please contact ** Nokia at qt-info@nokia.com. ** ** ** ** ** ** ** ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #ifndef QSCRIPTCOMPILER_P_H #define QSCRIPTCOMPILER_P_H // // W A R N I N G // ------------- // // This file is not part of the Qt API. It exists purely as an // implementation detail. This header file may change from version to // version without notice, or even be removed. // // We mean it. // #include #ifndef QT_NO_SCRIPT #include #include "qscriptastvisitor_p.h" #include "qscriptasm_p.h" QT_BEGIN_NAMESPACE class QScriptEnginePrivate; namespace QScript { class Compiler: protected AST::Visitor { public: Compiler(QScriptEnginePrivate *eng); virtual ~Compiler(); inline QScriptEnginePrivate *engine() const { return m_eng; } bool topLevelCompiler() const; void setTopLevelCompiler(bool b); CompilationUnit compile(AST::Node *node, const QList &formals = QList()); struct Label { Label(int o = 0): offset (o) {} int offset; QVector uses; }; // instruction set void iAdd(); void iAssign(); void iBitAnd(); void iBitOr(); void iBitXor(); void iBitNot(); void iBranch(int index); void iBranchTrue(int index); void iBranchFalse(int index); void iCall(int argc); void iDeclareLocal(QScriptNameIdImpl *id, bool readOnly); void iDecr(); void iDelete(); void iDiv(); void iDuplicate(); void iEqual(); void iFetch(QScriptNameIdImpl *id); void iFetchField(); void iLazyArguments(); void iGreatOrEqual(); void iGreatThan(); void iIncr(); void iInplaceAdd(); void iInplaceAnd(); void iInplaceDecr(); void iInplaceDiv(); void iInplaceLeftShift(); void iInplaceMod(); void iInplaceMul(); void iInplaceOr(); void iInplaceRightShift(); void iInplaceSub(); void iInplaceURightShift(); void iInstanceOf(); void iLeftShift(); void iLessOrEqual(); void iLessThan(); void iLoadFalse(); void iLoadNumber(double number); void iLoadString(QScriptNameIdImpl *id); void iNewString(QScriptNameIdImpl *id); void iLoadThis(); void iLoadActivation(); void iLoadNull(); void iLoadTrue(); void iLoadUndefined(); void iMod(); void iMul(); void iUnaryPlus(); void iUnaryMinus(); void iNew(int argc); void iNewArray(); void iNewClosure(AST::FunctionExpression *expr); void iNewObject(); void iNewRegExp(QScriptNameIdImpl *pattern); void iNewRegExp(QScriptNameIdImpl *pattern, int flags); void iNot(); void iNotEqual(); void iPop(); void iPostDecr(); void iPostIncr(); void iPutField(); void iResolve(QScriptNameIdImpl *id); void iRet(); void iRightShift(); void iSub(); void iStrictEqual(); void iStrictNotEqual(); void iSwap(); void iThrow(); void iTypeOf(); void iURightShift(); void iInplaceXor(); void iLine(AST::Node *node); void iNewEnumeration(); void iToFirstElement(); void iHasNextElement(); void iNextElement(); void iEnterWith(); void iLeaveWith(); void iBeginCatch(QScriptNameIdImpl *id); void iEndCatch(); void iSync(); void iHalt(); void iMakeReference(); void iIn(); void iNop(); void iDebugger(); protected: virtual bool preVisit(AST::Node *node); virtual bool visit(AST::ArrayLiteral *node); virtual bool visit(AST::ArrayMemberExpression *node); virtual bool visit(AST::Expression *node); virtual bool visit(AST::BinaryExpression *node); virtual bool visit(AST::BreakStatement *node); virtual bool visit(AST::CallExpression *node); virtual bool visit(AST::ConditionalExpression *node); virtual bool visit(AST::ContinueStatement *node); virtual bool visit(AST::DeleteExpression *node); virtual bool visit(AST::DoWhileStatement *node); virtual bool visit(AST::ExpressionStatement *node); virtual bool visit(AST::FalseLiteral *node); virtual bool visit(AST::FieldMemberExpression *node); virtual bool visit(AST::ForEachStatement *node); virtual bool visit(AST::LocalForEachStatement *node); virtual bool visit(AST::ForStatement *node); virtual bool visit(AST::FunctionDeclaration *node); virtual bool visit(AST::FunctionExpression *node); virtual bool visit(AST::FunctionSourceElement *node); virtual bool visit(AST::IdentifierExpression *node); virtual bool visit(AST::IfStatement *node); virtual bool visit(AST::LabelledStatement *node); virtual bool visit(AST::LocalForStatement *node); virtual bool visit(AST::NewExpression *node); virtual bool visit(AST::NewMemberExpression *node); virtual bool visit(AST::NumericLiteral *node); virtual bool visit(AST::ObjectLiteral *node); virtual bool visit(AST::PostDecrementExpression *node); virtual bool visit(AST::PostIncrementExpression *node); virtual bool visit(AST::PreDecrementExpression *node); virtual bool visit(AST::PreIncrementExpression *node); virtual bool visit(AST::RegExpLiteral *node); virtual bool visit(AST::ReturnStatement *node); virtual bool visit(AST::SourceElements *node); virtual bool visit(AST::StatementList *node); virtual bool visit(AST::StatementSourceElement *node); virtual bool visit(AST::StringLiteral *node); virtual bool visit(AST::SwitchStatement *node); virtual bool visit(AST::ThisExpression *node); virtual bool visit(AST::NullExpression *node); virtual bool visit(AST::ThrowStatement *node); virtual bool visit(AST::TryStatement *node); virtual bool visit(AST::TrueLiteral *node); virtual bool visit(AST::VariableStatement *node); virtual bool visit(AST::VariableDeclaration *node); virtual bool visit(AST::WhileStatement *node); virtual bool visit(AST::WithStatement *node); virtual bool visit(AST::Block *node); virtual bool visit(AST::TypeOfExpression *node); virtual bool visit(AST::DebuggerStatement *node); virtual void endVisit(AST::BreakStatement *node); virtual void endVisit(AST::ContinueStatement *node); virtual void endVisit(AST::ExpressionStatement *node); virtual void endVisit(AST::NotExpression *node); virtual void endVisit(AST::ReturnStatement *node); virtual void endVisit(AST::ThrowStatement *node); virtual void endVisit(AST::TildeExpression *node); virtual void endVisit(AST::UnaryPlusExpression *node); virtual void endVisit(AST::UnaryMinusExpression *node); virtual void endVisit(AST::VoidExpression *node); virtual void endVisit(AST::EmptyStatement *node); void visitForInternal(AST::Statement *node, AST::ExpressionNode *condition, AST::Statement *statement, AST::ExpressionNode *expression); bool isAssignmentOperator(int op) const; int inplaceAssignmentOperator(int op) const; inline int nextInstructionOffset() const { return m_instructions.count(); } inline void pushInstruction(QScriptInstruction::Operator op) { pushInstruction(op, QScriptValueImpl(), QScriptValueImpl()); } inline void pushInstruction(QScriptInstruction::Operator op, const QScriptValueImpl &arg1) { pushInstruction(op, arg1, QScriptValueImpl()); } inline void pushInstruction(QScriptInstruction::Operator op, const QScriptValueImpl &arg1, const QScriptValueImpl &arg2) { QScriptInstruction i; i.op = op; i.operand[0] = arg1; i.operand[1] = arg2; m_instructions.append(i); } inline bool generateReferences(bool b) { bool was = m_generateReferences; m_generateReferences = b; return was; } inline bool generateFastArgumentLookup(bool b) { bool was = m_generateFastArgumentLookup; m_generateFastArgumentLookup= b; return was; } inline bool iterationStatement(bool b) { bool was = m_iterationStatement; m_iterationStatement = b; return was; } inline bool switchStatement(bool b) { bool was = m_switchStatement; m_switchStatement = b; return was; } inline bool changeParseStatements(bool b) { bool was = m_parseStatements; m_parseStatements = b; return was; } inline bool withStatement(bool b) { bool was = m_withStatement; m_withStatement = b; return was; } inline bool generateLeaveOnBreak(bool b) { bool was = m_generateLeaveWithOnBreak; m_generateLeaveWithOnBreak = b; return was; } void patchInstruction(int index, int offset); private: QScriptEnginePrivate *m_eng; uint m_generateReferences: 1; uint m_iterationStatement: 1; uint m_switchStatement: 1; uint m_withStatement: 1; uint m_generateLeaveWithOnBreak: 1; uint m_generateFastArgumentLookup: 1; uint m_parseStatements: 1; uint m_pad: 25; bool m_topLevelCompiler; // bit QVector m_instructions; QVector m_exceptionHandlers; QList m_formals; struct Loop { Loop(QScriptNameIdImpl *n = 0): name(n) {} QScriptNameIdImpl *name; Label breakLabel; Label continueLabel; }; inline Loop *changeActiveLoop(Loop *activeLoop) { Loop *was = m_activeLoop; m_activeLoop = activeLoop; return was; } Loop *findLoop(QScriptNameIdImpl *name = 0); Loop *m_activeLoop; QMap m_loops; CompilationUnit m_compilationUnit; }; } // namespace QScript #endif // QT_NO_SCRIPT QT_END_NAMESPACE #endif