| 1 | // -*- c-basic-offset: 2 -*-
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| 2 | /*
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| 3 | * This file is part of the KDE libraries
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| 4 | * Copyright (C) 2003 Apple Computer, Inc
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| 5 | *
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| 6 | * This library is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the GNU Library General Public
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| 8 | * License as published by the Free Software Foundation; either
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| 9 | * version 2 of the License, or (at your option) any later version.
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| 10 | *
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| 11 | * This library is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 14 | * Library General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU Library General Public License
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| 17 | * along with this library; see the file COPYING.LIB. If not, write to
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| 18 | * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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| 19 | * Boston, MA 02111-1307, USA.
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| 20 | *
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| 21 | */
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| 22 |
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| 23 | #ifndef _KJS_REFERENCE_H_
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| 24 | #define _KJS_REFERENCE_H_
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| 25 |
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| 26 | #include "identifier.h"
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| 27 | #include "value.h"
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| 28 |
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| 29 | namespace KJS {
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| 30 |
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| 31 | class Reference {
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| 32 | friend class ReferenceList;
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| 33 | friend class ReferenceListIterator;
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| 34 | friend class ProtectedReference;
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| 35 | public:
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| 36 | Reference(const Object& b, const Identifier& p);
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| 37 | Reference(const Object& b, unsigned p);
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| 38 | Reference(ObjectImp *b, const Identifier& p);
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| 39 | Reference(ObjectImp *b, unsigned p);
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| 40 | Reference(const Null& b, const Identifier& p);
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| 41 | Reference(const Null& b, unsigned p);
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| 42 | static Reference makeValueReference(const Value& v);
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| 43 |
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| 44 | /**
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| 45 | * Performs the GetBase type conversion operation on this value (ECMA 8.7)
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| 46 | *
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| 47 | * Since references are supposed to have an Object or null as their base,
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| 48 | * this method is guaranteed to return either Null() or an Object value.
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| 49 | */
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| 50 | Value getBase(ExecState *exec) const;
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| 51 |
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| 52 | /**
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| 53 | * Performs the GetPropertyName type conversion operation on this value
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| 54 | * (ECMA 8.7)
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| 55 | */
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| 56 | Identifier getPropertyName(ExecState *exec) const;
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| 57 |
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| 58 | /**
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| 59 | * Performs the GetValue type conversion operation on this value
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| 60 | * (ECMA 8.7.1)
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| 61 | */
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| 62 | Value getValue(ExecState *exec) const;
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| 63 |
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| 64 | /**
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| 65 | * Performs the PutValue type conversion operation on this value
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| 66 | * (ECMA 8.7.1)
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| 67 | */
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| 68 | void putValue(ExecState *exec, const Value &w);
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| 69 | bool deleteValue(ExecState *exec);
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| 70 |
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| 71 | bool isMutable();
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| 72 |
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| 73 | private:
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| 74 | Reference();
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| 75 |
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| 76 | Value base;
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| 77 | unsigned propertyNameAsNumber;
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| 78 | bool baseIsValue;
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| 79 | bool propertyNameIsNumber;
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| 80 | mutable Identifier prop;
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| 81 | };
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| 82 | }
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| 83 |
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| 84 | #endif
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