kjs/internal.h

   1 // -*- c-basic-offset: 2 -*-
   2 /*
   3  *  This file is part of the KDE libraries
   4  *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
   5  *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
   6  *  Copyright (C) 2003, 2004, 2005, 2006 Apple Computer, Inc.
   7  *
   8  *  This library is free software; you can redistribute it and/or
   9  *  modify it under the terms of the GNU Library General Public
  10  *  License as published by the Free Software Foundation; either
  11  *  version 2 of the License, or (at your option) any later version.
  12  *
  13  *  This library is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  *  Library General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU Library General Public License
  19  *  along with this library; see the file COPYING.LIB.  If not, write to
  20  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  21  *  Boston, MA 02110-1301, USA.
  22  *
  23  */
  24
  25 #ifndef INTERNAL_H
  26 #define INTERNAL_H
  27
  28 #include "JSType.h"
  29 #include "interpreter.h"
  30 #include "object.h"
  31 #include "protect.h"
  32 #include "scope_chain.h"
  33 #include "types.h"
  34 #include "ustring.h"
  35
  36 #include <wtf/Noncopyable.h>
  37
  38 #ifndef I18N_NOOP
  39 #define I18N_NOOP(s) s
  40 #endif
  41
  42 namespace KJS {
  43
  44
  45   // ---------------------------------------------------------------------------
  46   //                            Primitive impls
  47   // ---------------------------------------------------------------------------
  48
  49   class StringImp : public JSCell {
  50   public:
  51     StringImp() : val(UString::empty) { }
  52     StringImp(const UString& v) : val(v) { Collector::reportExtraMemoryCost(v.cost()); }
  53     enum HasOtherOwnerType { HasOtherOwner }; // e.g. storage cost already accounted for
  54     StringImp(const UString& value, HasOtherOwnerType) : val(value) { }
  55     StringImp(const char* v) : val(v) { }
  56     StringImp(const char* v, int len) : val(v, len) { }
  57     const UString& value() const { return val; }
  58
  59     virtual JSType type() const { return StringType; }
  60
  61     virtual JSValue *toPrimitive(ExecState *exec, JSType preferred = UnspecifiedType) const;
  62     virtual bool getPrimitiveNumber(ExecState*, double& number, JSValue*& value);
  63     virtual bool toBoolean(ExecState *exec) const;
  64     virtual double toNumber(ExecState *exec) const;
  65     virtual UString toString(ExecState *exec) const;
  66     virtual JSObject *toObject(ExecState *exec) const;
  67
  68   private:
  69     UString val;
  70   };
  71
  72   class NumberImp : public JSCell {
  73     friend class ConstantValues;
  74     friend KJS_EXPORT JSValue *jsNumberCell(double);
  75   public:
  76     double value() const { return val; }
  77
  78     JSType type() const { return NumberType; }
  79
  80     JSValue *toPrimitive(ExecState *exec, JSType preferred = UnspecifiedType) const;
  81     virtual bool getPrimitiveNumber(ExecState*, double& number, JSValue*& value);
  82     bool toBoolean(ExecState *exec) const;
  83     double toNumber(ExecState *exec) const;
  84     UString toString(ExecState *exec) const;
  85     JSObject *toObject(ExecState *exec) const;
  86
  87   private:
  88     NumberImp(double v) : val(v) { }
  89
  90     virtual bool getUInt32(uint32_t&) const;
  91     virtual bool getTruncatedInt32(int32_t&) const;
  92     virtual bool getTruncatedUInt32(uint32_t&) const;
  93
  94     double val;
  95   };
  96
  97   // ---------------------------------------------------------------------------
  98   //                            Evaluation
  99   // ---------------------------------------------------------------------------
 100
 101   struct AttachedInterpreter;
 102   class DebuggerImp {
 103   public:
 104
 105     DebuggerImp() {
 106       interps = 0;
 107       isAborted = false;
 108     }
 109
 110     void abort() { isAborted = true; }
 111     bool aborted() const { return isAborted; }
 112
 113     AttachedInterpreter *interps;
 114     bool isAborted;
 115   };
 116
 117   // helper function for toInteger, toInt32, toUInt32 and toUInt16
 118   double roundValue(double d);
 119   inline double roundValue(ExecState *e, JSValue *v) { return roundValue(v->toNumber(e)); }
 120
 121   int32_t toInt32(double dd);
 122   uint32_t toUInt32(double dd);
 123   uint16_t toUInt16(double dd);
 124
 125 //#ifndef NDEBUG
 126   void printInfo(ExecState *exec, const char *s, JSValue *, int lineno = -1);
 127 //#endif
 128
 129 } // namespace
 130
 131 #endif //  INTERNAL_H