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# internal.h

    00001 // -*- c-basic-offset: 2 -*-
    00002 /*
    00003  *  This file is part of the KDE libraries
    00004  *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
    00005  *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
    00006  *
    00007  *  This library is free software; you can redistribute it and/or
    00008  *  modify it under the terms of the GNU Lesser General Public
    00009  *  License as published by the Free Software Foundation; either
    00010  *  version 2 of the License, or (at your option) any later version.
    00011  *
    00012  *  This library is distributed in the hope that it will be useful,
    00013  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
    00014  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00015  *  Lesser General Public License for more details.
    00016  *
    00017  *  You should have received a copy of the GNU Lesser General Public License
    00018  *  along with this library; see the file COPYING.LIB.  If not, write to
    00019  *  the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    00020  *  Boston, MA 02111-1307, USA.
    00021  *
    00022  */
    00023
    00024 #ifndef _INTERNAL_H_
    00025 #define _INTERNAL_H_
    00026
    00027 #include "ustring.h"
    00028 #include "value.h"
    00029 #include "object.h"
    00030 #include "types.h"
    00031 #include "interpreter.h"
    00032
    00033 #define I18N_NOOP(s) s
    00034
    00035 namespace KJS {
    00036
    00037   static const double D16 = 65536.0;
    00038   static const double D32 = 4294967296.0;
    00039
    00040   class ProgramNode;
    00041   class FunctionBodyNode;
    00042   class FunctionPrototypeImp;
    00043   class FunctionImp;
    00044   class Debugger;
    00045
    00046   // ---------------------------------------------------------------------------
    00047   //                            Primitive impls
    00048   // ---------------------------------------------------------------------------
    00049
    00050   class UndefinedImp : public ValueImp {
    00051   public:
    00052     UndefinedImp() {}
    00053     virtual ~UndefinedImp() { }
    00054
    00055     Type type() const { return UndefinedType; }
    00056
    00057     Value toPrimitive(ExecState *exec, Type preferred = UnspecifiedType) const;
    00058     bool toBoolean(ExecState *exec) const;
    00059     double toNumber(ExecState *exec) const;
    00060     UString toString(ExecState *exec) const;
    00061     Object toObject(ExecState *exec) const;
    00062
    00063     static UndefinedImp *staticUndefined;
    00064   };
    00065
    00066   class NullImp : public ValueImp {
    00067   public:
    00068     NullImp() {}
    00069     virtual ~NullImp() { }
    00070
    00071     Type type() const { return NullType; }
    00072
    00073     Value toPrimitive(ExecState *exec, Type preferred = UnspecifiedType) const;
    00074     bool toBoolean(ExecState *exec) const;
    00075     double toNumber(ExecState *exec) const;
    00076     UString toString(ExecState *exec) const;
    00077     Object toObject(ExecState *exec) const;
    00078
    00079     static NullImp *staticNull;
    00080   };
    00081
    00082   class BooleanImp : public ValueImp {
    00083   public:
    00084     virtual ~BooleanImp() { }
    00085     BooleanImp(bool v = false) : val(v) { }
    00086     bool value() const { return val; }
    00087
    00088     Type type() const { return BooleanType; }
    00089
    00090     Value toPrimitive(ExecState *exec, Type preferred = UnspecifiedType) const;
    00091     bool toBoolean(ExecState *exec) const;
    00092     double toNumber(ExecState *exec) const;
    00093     UString toString(ExecState *exec) const;
    00094     Object toObject(ExecState *exec) const;
    00095
    00096     static BooleanImp *staticTrue;
    00097     static BooleanImp *staticFalse;
    00098   private:
    00099     bool val;
    00100   };
    00101
    00102   class StringImp : public ValueImp {
    00103   public:
    00104     StringImp(const UString& v);
    00105     virtual ~StringImp() { }
    00106     UString value() const { return val; }
    00107
    00108     Type type() const { return StringType; }
    00109
    00110     Value toPrimitive(ExecState *exec, Type preferred = UnspecifiedType) const;
    00111     bool toBoolean(ExecState *exec) const;
    00112     double toNumber(ExecState *exec) const;
    00113     UString toString(ExecState *exec) const;
    00114     Object toObject(ExecState *exec) const;
    00115
    00116   private:
    00117     UString val;
    00118   };
    00119
    00120   class NumberImp : public ValueImp {
    00121   public:
    00122     NumberImp(double v);
    00123     virtual ~NumberImp() { }
    00124     double value() const { return val; }
    00125
    00126     Type type() const { return NumberType; }
    00127
    00128     Value toPrimitive(ExecState *exec, Type preferred = UnspecifiedType) const;
    00129     bool toBoolean(ExecState *exec) const;
    00130     double toNumber(ExecState *exec) const;
    00131     UString toString(ExecState *exec) const;
    00132     Object toObject(ExecState *exec) const;
    00133
    00134   private:
    00135     double val;
    00136   };
    00137
    00138   // ---------------------------------------------------------------------------
    00139   //                            Internal type impls
    00140   // ---------------------------------------------------------------------------
    00141
    00142   // TODO: remove. replaced by light-weight new Reference2 class
    00143   class ReferenceImp : public ValueImp {
    00144   public:
    00145
    00146     ReferenceImp(const Value& v, const UString& p);
    00147     virtual ~ReferenceImp() { }
    00148     virtual void mark();
    00149
    00150     Value toPrimitive(ExecState *exec, Type preferred = UnspecifiedType) const;
    00151     bool toBoolean(ExecState *exec) const;
    00152     double toNumber(ExecState *exec) const;
    00153     UString toString(ExecState *exec) const;
    00154     Object toObject(ExecState *exec) const;
    00155
    00156     Value getBase() const { return Value(base); }
    00157     UString getPropertyName() const { return prop; }
    00158
    00159     Type type() const { return ReferenceType; }
    00160
    00161   private:
    00162     ValueImp *base;
    00163     UString prop;
    00164   };
    00165
    00166   class CompletionImp : public ValueImp {
    00167   public:
    00168     Type type() const { return CompletionType; }
    00169
    00170     CompletionImp(ComplType c, const Value& v, const UString& t);
    00171     virtual ~CompletionImp();
    00172     virtual void mark();
    00173
    00174     Value toPrimitive(ExecState *exec, Type preferred = UnspecifiedType) const;
    00175     bool toBoolean(ExecState *exec) const;
    00176     double toNumber(ExecState *exec) const;
    00177     UString toString(ExecState *exec) const;
    00178     Object toObject(ExecState *exec) const;
    00179
    00180     ComplType complType() const { return comp; }
    00181     Value value() const { return Value(val); }
    00182     UString target() const { return tar; }
    00183
    00184   private:
    00185     ComplType comp;
    00186     ValueImp * val;
    00187     UString tar;
    00188   };
    00189
    00193   /* TODO: KDE 4.0: delete Reference in types.h and rename this one. */
    00194   class Reference2 {
    00195   public:
    00199     Reference2() { }
    00203     Reference2(const Value& v) : bs(v) { }
    00207     Reference2(const Value& v, const UString& p) : bs(v), prop(p) { }
    00208
    00209     bool isValid() const { return !bs.isNull() && !prop.isNull(); }
    00210
    00211
    00212     // ECMA 8.7.1
    00213     Value base() const { return Value(bs); }
    00214     // ECMA 8.7.2
    00215     UString propertyName() const { return prop; }
    00216
    00217     // ECMA 8.7.1
    00218     Value getValue(ExecState *exec) const;
    00219     void putValue(ExecState *exec, const Value& w);
    00220
    00221   private:
    00222     Value bs;
    00223     UString prop;
    00224   };
    00225
    00229   class ListNode {
    00230     friend class List;
    00231     friend class ListImp;
    00232     friend class ListIterator;
    00233     ListNode(Value val, ListNode *p, ListNode *n)
    00234       : member(val.imp()), prev(p), next(n) {};
    00235     ValueImp *member;
    00236     ListNode *prev, *next;
    00237   };
    00238
    00239   class ListImp : public ValueImp {
    00240     friend class ListIterator;
    00241     friend class List;
    00242     friend class InterpreterImp;
    00243   public:
    00244     ListImp();
    00245     ~ListImp();
    00246
    00247     Type type() const { return ListType; }
    00248
    00249     virtual void mark();
    00250
    00251     Value toPrimitive(ExecState *exec, Type preferred = UnspecifiedType) const;
    00252     bool toBoolean(ExecState *exec) const;
    00253     double toNumber(ExecState *exec) const;
    00254     UString toString(ExecState *exec) const;
    00255     Object toObject(ExecState *exec) const;
    00256
    00257     void append(const Value& val);
    00258     void prepend(const Value& val);
    00259     void appendList(const List& lst);
    00260     void prependList(const List& lst);
    00261     void removeFirst();
    00262     void removeLast();
    00263     void remove(const Value &val);
    00264     void clear();
    00265     ListImp *copy() const;
    00266     ListIterator begin() const { return ListIterator(hook->next); }
    00267     ListIterator end() const { return ListIterator(hook); }
    00268     //    bool isEmpty() const { return (hook->prev == hook); }
    00269     bool isEmpty() const;
    00270     int size() const;
    00271     Value at(int i) const;
    00272     Value operator[](int i) const { return at(i); }
    00273     static ListImp* empty();
    00274
    00275 #ifdef KJS_DEBUG_MEM
    00276     static int count;
    00277 #endif
    00278   private:
    00279     void erase(ListNode *n);
    00280     ListNode *hook;
    00281     static ListImp *emptyList;
    00282   };
    00283
    00287   class LabelStack {
    00288   public:
    00289     LabelStack(): tos(0L) {}
    00290     ~LabelStack();
    00291
    00292     LabelStack(const LabelStack &other);
    00293     LabelStack &operator=(const LabelStack &other);
    00294
    00299     bool push(const UString &id);
    00303     bool contains(const UString &id) const;
    00307     void pop();
    00308   private:
    00309     struct StackElem {
    00310       UString id;
    00311       StackElem *prev;
    00312     };
    00313
    00314     StackElem *tos;
    00315     void clear();
    00316   };
    00317
    00318
    00319   // ---------------------------------------------------------------------------
    00320   //                            Parsing & evaluateion
    00321   // ---------------------------------------------------------------------------
    00322
    00323   enum CodeType { GlobalCode,
    00324                   EvalCode,
    00325                   FunctionCode,
    00326                   AnonymousCode };
    00327
    00331   class ContextImp {
    00332   public:
    00333     // TODO: remove glob parameter. deducable from exec.
    00334     ContextImp(Object &glob, ExecState *exec, Object &thisV, CodeType type = GlobalCode,
    00335                ContextImp *_callingContext = 0L, FunctionImp *func = 0L, const List &args = List());
    00336     virtual ~ContextImp();
    00337
    00338     const List scopeChain() const { return scope; }
    00339     Object variableObject() const { return variable; }
    00340     void setVariableObject(const Object &v) { variable = v; }
    00341     Object thisValue() const { return thisVal; }
    00342     ContextImp *callingContext() { return callingCon; }
    00343     Object activationObject() { return activation; }
    00344
    00345     void pushScope(const Object &s);
    00346     void popScope();
    00347     LabelStack *seenLabels() { return &ls; }
    00348
    00349   private:
    00350
    00351     List scope;
    00352     Object activation;
    00353     Object variable;
    00354     Object thisVal;
    00355
    00356     ContextImp *callingCon;
    00357
    00358     LabelStack ls;
    00359     CodeType codeType;
    00360   };
    00361
    00369   class Parser {
    00370   public:
    00371     static ProgramNode *parse(const UChar *code, unsigned int length, int *sourceId = 0,
    00372                               int *errLine = 0, UString *errMsg = 0);
    00373
    00374     static ProgramNode *progNode;
    00375     static int sid;
    00376   };
    00377
    00378   class InterpreterImp {
    00379     friend class Collector;
    00380   public:
    00381     static void globalInit();
    00382     static void globalClear();
    00383
    00384     InterpreterImp(Interpreter *interp, const Object &glob);
    00385     ~InterpreterImp();
    00386
    00387     Object globalObject() const { return global; }
    00388     Interpreter* interpreter() const { return m_interpreter; }
    00389
    00390     void initGlobalObject();
    00391
    00392     void mark();
    00393
    00394     ExecState *globalExec() { return globExec; }
    00395     bool checkSyntax(const UString &code);
    00396     Completion evaluate(const UString &code, const Value &thisV);
    00397     Debugger *debugger() const { return dbg; }
    00398     void setDebugger(Debugger *d);
    00399
    00400     Object builtinObject() const { return b_Object; }
    00401     Object builtinFunction() const { return b_Function; }
    00402     Object builtinArray() const { return b_Array; }
    00403     Object builtinBoolean() const { return b_Boolean; }
    00404     Object builtinString() const { return b_String; }
    00405     Object builtinNumber() const { return b_Number; }
    00406     Object builtinDate() const { return b_Date; }
    00407     Object builtinRegExp() const { return b_RegExp; }
    00408     Object builtinError() const { return b_Error; }
    00409
    00410     Object builtinObjectPrototype() const { return b_ObjectPrototype; }
    00411     Object builtinFunctionPrototype() const { return b_FunctionPrototype; }
    00412     Object builtinArrayPrototype() const { return b_ArrayPrototype; }
    00413     Object builtinBooleanPrototype() const { return b_BooleanPrototype; }
    00414     Object builtinStringPrototype() const { return b_StringPrototype; }
    00415     Object builtinNumberPrototype() const { return b_NumberPrototype; }
    00416     Object builtinDatePrototype() const { return b_DatePrototype; }
    00417     Object builtinRegExpPrototype() const { return b_RegExpPrototype; }
    00418     Object builtinErrorPrototype() const { return b_ErrorPrototype; }
    00419
    00420     Object builtinEvalError() const { return b_evalError; }
    00421     Object builtinRangeError() const { return b_rangeError; }
    00422     Object builtinReferenceError() const { return b_referenceError; }
    00423     Object builtinSyntaxError() const { return b_syntaxError; }
    00424     Object builtinTypeError() const { return b_typeError; }
    00425     Object builtinURIError() const { return b_uriError; }
    00426
    00427     Object builtinEvalErrorPrototype() const { return b_evalErrorPrototype; }
    00428     Object builtinRangeErrorPrototype() const { return b_rangeErrorPrototype; }
    00429     Object builtinReferenceErrorPrototype() const { return b_referenceErrorPrototype; }
    00430     Object builtinSyntaxErrorPrototype() const { return b_syntaxErrorPrototype; }
    00431     Object builtinTypeErrorPrototype() const { return b_typeErrorPrototype; }
    00432     Object builtinURIErrorPrototype() const { return b_uriErrorPrototype; }
    00433
    00434     void setCompatMode(Interpreter::CompatMode mode) { m_compatMode = mode; }
    00435     Interpreter::CompatMode compatMode() const { return m_compatMode; }
    00436
    00437     // Chained list of interpreters (ring)
    00438     static InterpreterImp* firstInterpreter() { return s_hook; }
    00439     InterpreterImp *nextInterpreter() const { return next; }
    00440     InterpreterImp *prevInterpreter() const { return prev; }
    00441
    00442   private:
    00443     void clear();
    00444     Interpreter *m_interpreter;
    00445     Object global;
    00446     Debugger *dbg;
    00447
    00448     // Built-in properties of the object prototype. These are accessible
    00449     // from here even if they are replaced by js code (e.g. assigning to
    00450     // Array.prototype)
    00451
    00452     Object b_Object;
    00453     Object b_Function;
    00454     Object b_Array;
    00455     Object b_Boolean;
    00456     Object b_String;
    00457     Object b_Number;
    00458     Object b_Date;
    00459     Object b_RegExp;
    00460     Object b_Error;
    00461
    00462     Object b_ObjectPrototype;
    00463     Object b_FunctionPrototype;
    00464     Object b_ArrayPrototype;
    00465     Object b_BooleanPrototype;
    00466     Object b_StringPrototype;
    00467     Object b_NumberPrototype;
    00468     Object b_DatePrototype;
    00469     Object b_RegExpPrototype;
    00470     Object b_ErrorPrototype;
    00471
    00472     Object b_evalError;
    00473     Object b_rangeError;
    00474     Object b_referenceError;
    00475     Object b_syntaxError;
    00476     Object b_typeError;
    00477     Object b_uriError;
    00478
    00479     Object b_evalErrorPrototype;
    00480     Object b_rangeErrorPrototype;
    00481     Object b_referenceErrorPrototype;
    00482     Object b_syntaxErrorPrototype;
    00483     Object b_typeErrorPrototype;
    00484     Object b_uriErrorPrototype;
    00485
    00486     ExecState *globExec;
    00487     Interpreter::CompatMode m_compatMode;
    00488
    00489     // Chained list of interpreters (ring) - for collector
    00490     static InterpreterImp* s_hook;
    00491     InterpreterImp *next, *prev;
    00492
    00493     int recursion;
    00494   };
    00495
    00496   class AttachedInterpreter;
    00497   class DebuggerImp {
    00498   public:
    00499
    00500     DebuggerImp() {
    00501       interps = 0;
    00502       isAborted = false;
    00503     }
    00504
    00505     void abort() { isAborted = true; }
    00506     bool aborted() const { return isAborted; }
    00507
    00508     AttachedInterpreter *interps;
    00509     bool isAborted;
    00510   };
    00511
    00512
    00513
    00514   class InternalFunctionImp : public ObjectImp {
    00515   public:
    00516     InternalFunctionImp(FunctionPrototypeImp *funcProto);
    00517     bool implementsHasInstance() const;
    00518     Boolean hasInstance(ExecState *exec, const Value &value);
    00519
    00520     virtual const ClassInfo *classInfo() const { return &info; }
    00521     static const ClassInfo info;
    00522   };
    00523
    00524   // helper function for toInteger, toInt32, toUInt32 and toUInt16
    00525   double roundValue(ExecState *exec, const Value &v);
    00526
    00527 #ifndef NDEBUG
    00528   void printInfo(ExecState *exec, const char *s, const Value &o, int lineno = -1);
    00529 #endif
    00530
    00531 } // namespace
    00532
    00533
    00534 #endif //  _INTERNAL_H_

This file is part of the documentation for kdelibs Version 3.1.5.
Documentation copyright © 1996-2002 the KDE developers.
Generated on Wed Jan 28 13:08:27 2004 by doxygen 1.3.4 written by Dimitri van Heesch, © 1997-2001