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# nodes.h

    00001 // -*- c-basic-offset: 2 -*-
    00002 /*
    00003  *  This file is part of the KDE libraries
    00004  *  Copyright (C) 1999-2000 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 _NODES_H_
    00025 #define _NODES_H_
    00026
    00027 #include "internal.h"
    00028 //#include "debugger.h"
    00029 #ifndef NDEBUG
    00030 #ifndef __osf__
    00031 #include <list>
    00032 #endif
    00033 #endif
    00034
    00035 namespace KJS {
    00036
    00037   class RegExp;
    00038   class SourceElementsNode;
    00039   class ProgramNode;
    00040   class SourceStream;
    00041
    00042   enum Operator { OpEqual,
    00043                   OpEqEq,
    00044                   OpNotEq,
    00045                   OpStrEq,
    00046                   OpStrNEq,
    00047                   OpPlusEq,
    00048                   OpMinusEq,
    00049                   OpMultEq,
    00050                   OpDivEq,
    00051                   OpPlusPlus,
    00052                   OpMinusMinus,
    00053                   OpLess,
    00054                   OpLessEq,
    00055                   OpGreater,
    00056                   OpGreaterEq,
    00057                   OpAndEq,
    00058                   OpXOrEq,
    00059                   OpOrEq,
    00060                   OpModEq,
    00061                   OpAnd,
    00062                   OpOr,
    00063                   OpBitAnd,
    00064                   OpBitXOr,
    00065                   OpBitOr,
    00066                   OpLShift,
    00067                   OpRShift,
    00068                   OpURShift,
    00069                   OpIn,
    00070                   OpInstanceOf
    00071   };
    00072
    00073   class Node {
    00074   public:
    00075     Node();
    00076     virtual ~Node();
    00080     virtual Reference2 evaluate(ExecState *exec) const;
    00084     virtual Value value(ExecState *exec) const;
    00085     UString toString() const;
    00086     virtual void streamTo(SourceStream &s) const = 0;
    00087     virtual void processVarDecls(ExecState */*exec*/) {}
    00088     int lineNo() const { return line; }
    00089
    00090   public:
    00091     // reference counting mechanism
    00092     virtual void ref() { refcount++; }
    00093 #ifdef KJS_DEBUG_MEM
    00094     virtual bool deref() { assert( refcount > 0 ); return (!--refcount); }
    00095 #else
    00096     virtual bool deref() { return (!--refcount); }
    00097 #endif
    00098
    00099
    00100 #ifdef KJS_DEBUG_MEM
    00101     static void finalCheck();
    00102 #endif
    00103   protected:
    00104     Value throwError(ExecState *exec, ErrorType e, const char *msg) const;
    00105     int line;
    00106     unsigned int refcount;
    00107     virtual int sourceId() const { return -1; }
    00108   private:
    00109 #ifdef KJS_DEBUG_MEM
    00110     // List of all nodes, for debugging purposes. Don't remove!
    00111     static std::list<Node *> *s_nodes;
    00112 #endif
    00113     // disallow assignment
    00114     Node& operator=(const Node&);
    00115     Node(const Node &other);
    00116   };
    00117
    00118   class StatementNode : public Node {
    00119   public:
    00120     StatementNode();
    00121     ~StatementNode();
    00122     void setLoc(int line0, int line1, int sourceId);
    00123     int firstLine() const { return l0; }
    00124     int lastLine() const { return l1; }
    00125     int sourceId() const { return sid; }
    00126     bool hitStatement(ExecState *exec);
    00127     bool abortStatement(ExecState *exec);
    00128     virtual Completion execute(ExecState *exec) = 0;
    00129     void pushLabel(const UString *id) {
    00130       if (id) ls.push(*id);
    00131     }
    00132   protected:
    00133     LabelStack ls;
    00134   private:
    00135     Reference2 evaluate(ExecState */*exec*/) const { return Reference2(); }
    00136     int l0, l1;
    00137     int sid;
    00138     bool breakPoint;
    00139   };
    00140
    00141   class NullNode : public Node {
    00142   public:
    00143     NullNode() {}
    00144     Value value(ExecState *exec) const;
    00145     virtual void streamTo(SourceStream &s) const;
    00146   };
    00147
    00148   class BooleanNode : public Node {
    00149   public:
    00150     BooleanNode(bool v) : val(v) {}
    00151     Value value(ExecState *exec) const;
    00152     virtual void streamTo(SourceStream &s) const;
    00153   private:
    00154     bool val;
    00155   };
    00156
    00157   class NumberNode : public Node {
    00158   public:
    00159     NumberNode(double v) : val(v) { }
    00160     virtual Value value(ExecState *exec) const;
    00161     virtual void streamTo(SourceStream &s) const;
    00162   private:
    00163     double val;
    00164   };
    00165
    00166   class StringNode : public Node {
    00167   public:
    00168     StringNode(const UString *v) : val(*v) { }
    00169     Value value(ExecState *exec) const;
    00170     virtual void streamTo(SourceStream &s) const;
    00171   private:
    00172     UString val;
    00173   };
    00174
    00175   class RegExpNode : public Node {
    00176   public:
    00177     RegExpNode(const UString &p, const UString &f)
    00178       : pattern(p), flags(f) { }
    00179     virtual Value value(ExecState *exec) const;
    00180     virtual void streamTo(SourceStream &s) const;
    00181   private:
    00182     UString pattern, flags;
    00183   };
    00184
    00185   class ThisNode : public Node {
    00186   public:
    00187     ThisNode() {}
    00188     virtual Value value(ExecState *exec) const;
    00189     virtual void streamTo(SourceStream &s) const;
    00190   };
    00191
    00192   class ResolveNode : public Node {
    00193   public:
    00194     ResolveNode(const UString *s) : ident(*s) { }
    00195     Reference2 evaluate(ExecState *exec) const;
    00196     virtual Value value(ExecState *exec) const;
    00197     virtual void streamTo(SourceStream &s) const;
    00198   private:
    00199     UString ident;
    00200   };
    00201
    00202   class GroupNode : public Node {
    00203   public:
    00204     GroupNode(Node *g) : group(g) { }
    00205     virtual void ref();
    00206     virtual bool deref();
    00207     virtual ~GroupNode();
    00208     Reference2 evaluate(ExecState *exec) const;
    00209     virtual Value value(ExecState *exec) const;
    00210     virtual void streamTo(SourceStream &s) const;
    00211   private:
    00212     Node *group;
    00213   };
    00214
    00215   class ElisionNode : public Node {
    00216   public:
    00217     ElisionNode(ElisionNode *e) : elision(e) { }
    00218     virtual void ref();
    00219     virtual bool deref();
    00220     virtual ~ElisionNode();
    00221     virtual Value value(ExecState *exec) const;
    00222     virtual void streamTo(SourceStream &s) const;
    00223   private:
    00224     ElisionNode *elision;
    00225   };
    00226
    00227   class ElementNode : public Node {
    00228   public:
    00229     ElementNode(ElisionNode *e, Node *n) : list(0L), elision(e), node(n) { }
    00230     ElementNode(ElementNode *l, ElisionNode *e, Node *n)
    00231       : list(l), elision(e), node(n) { }
    00232     virtual void ref();
    00233     virtual bool deref();
    00234     virtual ~ElementNode();
    00235     virtual Value value(ExecState *exec) const;
    00236     virtual void streamTo(SourceStream &s) const;
    00237   private:
    00238     ElementNode *list;
    00239     ElisionNode *elision;
    00240     Node *node;
    00241   };
    00242
    00243   class ArrayNode : public Node {
    00244   public:
    00245     ArrayNode(ElisionNode *e) : element(0L), elision(e), opt(true) { }
    00246     ArrayNode(ElementNode *ele)
    00247       : element(ele), elision(0), opt(false) { }
    00248     ArrayNode(ElisionNode *eli, ElementNode *ele)
    00249       : element(ele), elision(eli), opt(true) { }
    00250     virtual void ref();
    00251     virtual bool deref();
    00252     virtual ~ArrayNode();
    00253     virtual Value value(ExecState *exec) const;
    00254     virtual void streamTo(SourceStream &s) const;
    00255   private:
    00256     ElementNode *element;
    00257     ElisionNode *elision;
    00258     bool opt;
    00259   };
    00260
    00261   class ObjectLiteralNode : public Node {
    00262   public:
    00263     ObjectLiteralNode(Node *l) : list(l) { }
    00264     virtual void ref();
    00265     virtual bool deref();
    00266     virtual ~ObjectLiteralNode();
    00267     virtual Value value(ExecState *exec) const;
    00268     virtual void streamTo(SourceStream &s) const;
    00269   private:
    00270     Node *list;
    00271   };
    00272
    00273   class PropertyValueNode : public Node {
    00274   public:
    00275     PropertyValueNode(Node *n, Node *a, Node *l = 0L)
    00276       : name(n), assign(a), list(l) { }
    00277     virtual void ref();
    00278     virtual bool deref();
    00279     virtual ~PropertyValueNode();
    00280     virtual Value value(ExecState *exec) const;
    00281     virtual void streamTo(SourceStream &s) const;
    00282   private:
    00283     Node *name, *assign, *list;
    00284   };
    00285
    00286   class PropertyNode : public Node {
    00287   public:
    00288     PropertyNode(double d) : numeric(d) { }
    00289     PropertyNode(const UString *s) : str(*s) { }
    00290     virtual Value value(ExecState *exec) const;
    00291     virtual void streamTo(SourceStream &s) const;
    00292   private:
    00293     double numeric;
    00294     UString str;
    00295   };
    00296
    00297   class AccessorNode1 : public Node {
    00298   public:
    00299     AccessorNode1(Node *e1, Node *e2) : expr1(e1), expr2(e2) {}
    00300     virtual void ref();
    00301     virtual bool deref();
    00302     virtual ~AccessorNode1();
    00303     Reference2 evaluate(ExecState *exec) const;
    00304     virtual void streamTo(SourceStream &s) const;
    00305   private:
    00306     Node *expr1;
    00307     Node *expr2;
    00308   };
    00309
    00310   class AccessorNode2 : public Node {
    00311   public:
    00312     AccessorNode2(Node *e, const UString *s) : expr(e), ident(*s) { }
    00313     virtual void ref();
    00314     virtual bool deref();
    00315     virtual ~AccessorNode2();
    00316     Reference2 evaluate(ExecState *exec) const;
    00317     virtual void streamTo(SourceStream &s) const;
    00318   private:
    00319     Node *expr;
    00320     UString ident;
    00321   };
    00322
    00323   class ArgumentListNode : public Node {
    00324   public:
    00325     ArgumentListNode(Node *e);
    00326     ArgumentListNode(ArgumentListNode *l, Node *e);
    00327     virtual void ref();
    00328     virtual bool deref();
    00329     virtual ~ArgumentListNode();
    00330     virtual Value value(ExecState *exec) const;
    00331     List evaluateList(ExecState *exec) const;
    00332     virtual void streamTo(SourceStream &s) const;
    00333   private:
    00334     ArgumentListNode *list;
    00335     Node *expr;
    00336   };
    00337
    00338   class ArgumentsNode : public Node {
    00339   public:
    00340     ArgumentsNode(ArgumentListNode *l);
    00341     virtual void ref();
    00342     virtual bool deref();
    00343     virtual ~ArgumentsNode();
    00344     virtual Value value(ExecState *exec) const;
    00345     List evaluateList(ExecState *exec) const;
    00346     virtual void streamTo(SourceStream &s) const;
    00347   private:
    00348     ArgumentListNode *list;
    00349   };
    00350
    00351   class NewExprNode : public Node {
    00352   public:
    00353     NewExprNode(Node *e) : expr(e), args(0L) {}
    00354     NewExprNode(Node *e, ArgumentsNode *a) : expr(e), args(a) {}
    00355     virtual void ref();
    00356     virtual bool deref();
    00357     virtual ~NewExprNode();
    00358     Value value(ExecState *exec) const;
    00359     virtual void streamTo(SourceStream &s) const;
    00360   private:
    00361     Node *expr;
    00362     ArgumentsNode *args;
    00363   };
    00364
    00365   class FunctionCallNode : public Node {
    00366   public:
    00367     FunctionCallNode(Node *e, ArgumentsNode *a) : expr(e), args(a) {}
    00368     virtual void ref();
    00369     virtual bool deref();
    00370     virtual ~FunctionCallNode();
    00371     virtual Value value(ExecState *exec) const;
    00372     virtual void streamTo(SourceStream &s) const;
    00373   private:
    00374     Node *expr;
    00375     ArgumentsNode *args;
    00376   };
    00377
    00378   class PostfixNode : public Node {
    00379   public:
    00380     PostfixNode(Node *e, Operator o) : expr(e), oper(o) {}
    00381     virtual void ref();
    00382     virtual bool deref();
    00383     virtual ~PostfixNode();
    00384     Value value(ExecState *exec) const;
    00385     virtual void streamTo(SourceStream &s) const;
    00386   private:
    00387     Node *expr;
    00388     Operator oper;
    00389   };
    00390
    00391   class DeleteNode : public Node {
    00392   public:
    00393     DeleteNode(Node *e) : expr(e) {}
    00394     virtual void ref();
    00395     virtual bool deref();
    00396     virtual ~DeleteNode();
    00397     virtual Value value(ExecState *exec) const;
    00398     virtual void streamTo(SourceStream &s) const;
    00399   private:
    00400     Node *expr;
    00401   };
    00402
    00403   class VoidNode : public Node {
    00404   public:
    00405     VoidNode(Node *e) : expr(e) {}
    00406     virtual void ref();
    00407     virtual bool deref();
    00408     virtual ~VoidNode();
    00409     virtual Value value(ExecState *exec) const;
    00410     virtual void streamTo(SourceStream &s) const;
    00411   private:
    00412     Node *expr;
    00413   };
    00414
    00415   class TypeOfNode : public Node {
    00416   public:
    00417     TypeOfNode(Node *e) : expr(e) {}
    00418     virtual void ref();
    00419     virtual bool deref();
    00420     virtual ~TypeOfNode();
    00421     virtual Value value(ExecState *exec) const;
    00422     virtual void streamTo(SourceStream &s) const;
    00423   private:
    00424     Node *expr;
    00425   };
    00426
    00427   class PrefixNode : public Node {
    00428   public:
    00429     PrefixNode(Operator o, Node *e) : oper(o), expr(e) {}
    00430     virtual void ref();
    00431     virtual bool deref();
    00432     virtual ~PrefixNode();
    00433     Value value(ExecState *exec) const;
    00434     virtual void streamTo(SourceStream &s) const;
    00435   private:
    00436     Operator oper;
    00437     Node *expr;
    00438   };
    00439
    00440   class UnaryPlusNode : public Node {
    00441   public:
    00442     UnaryPlusNode(Node *e) : expr(e) {}
    00443     virtual void ref();
    00444     virtual bool deref();
    00445     virtual ~UnaryPlusNode();
    00446     virtual Value value(ExecState *exec) const;
    00447     virtual void streamTo(SourceStream &s) const;
    00448   private:
    00449     Node *expr;
    00450   };
    00451
    00452   class NegateNode : public Node {
    00453   public:
    00454     NegateNode(Node *e) : expr(e) {}
    00455     virtual void ref();
    00456     virtual bool deref();
    00457     virtual ~NegateNode();
    00458     virtual Value value(ExecState *exec) const;
    00459     virtual void streamTo(SourceStream &s) const;
    00460   private:
    00461     Node *expr;
    00462   };
    00463
    00464   class BitwiseNotNode : public Node {
    00465   public:
    00466     BitwiseNotNode(Node *e) : expr(e) {}
    00467     virtual void ref();
    00468     virtual bool deref();
    00469     virtual ~BitwiseNotNode();
    00470     virtual Value value(ExecState *exec) const;
    00471     virtual void streamTo(SourceStream &s) const;
    00472   private:
    00473     Node *expr;
    00474   };
    00475
    00476   class LogicalNotNode : public Node {
    00477   public:
    00478     LogicalNotNode(Node *e) : expr(e) {}
    00479     virtual void ref();
    00480     virtual bool deref();
    00481     virtual ~LogicalNotNode();
    00482     virtual Value value(ExecState *exec) const;
    00483     virtual void streamTo(SourceStream &s) const;
    00484   private:
    00485     Node *expr;
    00486   };
    00487
    00488   class MultNode : public Node {
    00489   public:
    00490     MultNode(Node *t1, Node *t2, char op) : term1(t1), term2(t2), oper(op) {}
    00491     virtual void ref();
    00492     virtual bool deref();
    00493     virtual ~MultNode();
    00494     virtual Value value(ExecState *exec) const;
    00495     virtual void streamTo(SourceStream &s) const;
    00496   private:
    00497     Node *term1, *term2;
    00498     char oper;
    00499   };
    00500
    00501   class AddNode : public Node {
    00502   public:
    00503     AddNode(Node *t1, Node *t2, char op) : term1(t1), term2(t2), oper(op) {}
    00504     virtual void ref();
    00505     virtual bool deref();
    00506     virtual ~AddNode();
    00507     virtual Value value(ExecState *exec) const;
    00508     virtual void streamTo(SourceStream &s) const;
    00509   private:
    00510     Node *term1, *term2;
    00511     char oper;
    00512   };
    00513
    00514   class ShiftNode : public Node {
    00515   public:
    00516     ShiftNode(Node *t1, Operator o, Node *t2)
    00517       : term1(t1), term2(t2), oper(o) {}
    00518     virtual void ref();
    00519     virtual bool deref();
    00520     virtual ~ShiftNode();
    00521     virtual Value value(ExecState *exec) const;
    00522     virtual void streamTo(SourceStream &s) const;
    00523   private:
    00524     Node *term1, *term2;
    00525     Operator oper;
    00526   };
    00527
    00528   class RelationalNode : public Node {
    00529   public:
    00530     RelationalNode(Node *e1, Operator o, Node *e2) :
    00531       expr1(e1), expr2(e2), oper(o) {}
    00532     virtual void ref();
    00533     virtual bool deref();
    00534     virtual ~RelationalNode();
    00535     virtual Value value(ExecState *exec) const;
    00536     virtual void streamTo(SourceStream &s) const;
    00537   private:
    00538     Node *expr1, *expr2;
    00539     Operator oper;
    00540   };
    00541
    00542   class EqualNode : public Node {
    00543   public:
    00544     EqualNode(Node *e1, Operator o, Node *e2)
    00545       : expr1(e1), expr2(e2), oper(o) {}
    00546     virtual void ref();
    00547     virtual bool deref();
    00548     virtual ~EqualNode();
    00549     virtual Value value(ExecState *exec) const;
    00550     virtual void streamTo(SourceStream &s) const;
    00551   private:
    00552     Node *expr1, *expr2;
    00553     Operator oper;
    00554   };
    00555
    00556   class BitOperNode : public Node {
    00557   public:
    00558     BitOperNode(Node *e1, Operator o, Node *e2) :
    00559       expr1(e1), expr2(e2), oper(o) {}
    00560     virtual void ref();
    00561     virtual bool deref();
    00562     virtual ~BitOperNode();
    00563     virtual Value value(ExecState *exec) const;
    00564     virtual void streamTo(SourceStream &s) const;
    00565   private:
    00566     Node *expr1, *expr2;
    00567     Operator oper;
    00568   };
    00569
    00573   class BinaryLogicalNode : public Node {
    00574   public:
    00575     BinaryLogicalNode(Node *e1, Operator o, Node *e2) :
    00576       expr1(e1), expr2(e2), oper(o) {}
    00577     virtual void ref();
    00578     virtual bool deref();
    00579     virtual ~BinaryLogicalNode();
    00580     virtual Value value(ExecState *exec) const;
    00581     virtual void streamTo(SourceStream &s) const;
    00582   private:
    00583     Node *expr1, *expr2;
    00584     Operator oper;
    00585   };
    00586
    00590   class ConditionalNode : public Node {
    00591   public:
    00592     ConditionalNode(Node *l, Node *e1, Node *e2) :
    00593       logical(l), expr1(e1), expr2(e2) {}
    00594     virtual void ref();
    00595     virtual bool deref();
    00596     virtual ~ConditionalNode();
    00597     virtual Value value(ExecState *exec) const;
    00598     virtual void streamTo(SourceStream &s) const;
    00599   private:
    00600     Node *logical, *expr1, *expr2;
    00601   };
    00602
    00603   class AssignNode : public Node {
    00604   public:
    00605     AssignNode(Node *l, Operator o, Node *e) : left(l), oper(o), expr(e) {}
    00606     virtual void ref();
    00607     virtual bool deref();
    00608     virtual ~AssignNode();
    00609     virtual Value value(ExecState *exec) const;
    00610     virtual void streamTo(SourceStream &s) const;
    00611   private:
    00612     Node *left;
    00613     Operator oper;
    00614     Node *expr;
    00615   };
    00616
    00617   class CommaNode : public Node {
    00618   public:
    00619     CommaNode(Node *e1, Node *e2) : expr1(e1), expr2(e2) {}
    00620     virtual void ref();
    00621     virtual bool deref();
    00622     virtual ~CommaNode();
    00623     virtual Value value(ExecState *exec) const;
    00624     virtual void streamTo(SourceStream &s) const;
    00625   private:
    00626     Node *expr1, *expr2;
    00627   };
    00628
    00629   class StatListNode : public StatementNode {
    00630   public:
    00631     StatListNode(StatementNode *s) : statement(s), list(0L) { }
    00632     StatListNode(StatListNode *l, StatementNode *s) : statement(s), list(l) { }
    00633     virtual void ref();
    00634     virtual bool deref();
    00635     virtual ~StatListNode();
    00636     virtual Completion execute(ExecState *exec);
    00637     virtual void processVarDecls(ExecState *exec);
    00638     virtual void streamTo(SourceStream &s) const;
    00639   private:
    00640     StatementNode *statement;
    00641     StatListNode *list;
    00642   };
    00643
    00644   class AssignExprNode : public Node {
    00645   public:
    00646     AssignExprNode(Node *e) : expr(e) {}
    00647     virtual void ref();
    00648     virtual bool deref();
    00649     virtual ~AssignExprNode();
    00650     Value value(ExecState *exec) const;
    00651     virtual void streamTo(SourceStream &s) const;
    00652   private:
    00653     Node *expr;
    00654   };
    00655
    00656   class VarDeclNode : public Node {
    00657   public:
    00658     VarDeclNode(const UString *id, AssignExprNode *in);
    00659     virtual void ref();
    00660     virtual bool deref();
    00661     virtual ~VarDeclNode();
    00662     Value value(ExecState *exec) const;
    00663     virtual void processVarDecls(ExecState *exec);
    00664     virtual void streamTo(SourceStream &s) const;
    00665   private:
    00666     UString ident;
    00667     AssignExprNode *init;
    00668   };
    00669
    00670   class VarDeclListNode : public Node {
    00671   public:
    00672     VarDeclListNode(VarDeclNode *v) : list(0L), var(v) {}
    00673     VarDeclListNode(Node *l, VarDeclNode *v) : list(l), var(v) {}
    00674     virtual void ref();
    00675     virtual bool deref();
    00676     virtual ~VarDeclListNode();
    00677     Value value(ExecState *exec) const;
    00678     virtual void processVarDecls(ExecState *exec);
    00679     virtual void streamTo(SourceStream &s) const;
    00680   private:
    00681     Node *list;
    00682     VarDeclNode *var;
    00683   };
    00684
    00685   class VarStatementNode : public StatementNode {
    00686   public:
    00687     VarStatementNode(VarDeclListNode *l) : list(l) {}
    00688     virtual void ref();
    00689     virtual bool deref();
    00690     virtual ~VarStatementNode();
    00691     virtual Completion execute(ExecState *exec);
    00692     virtual void processVarDecls(ExecState *exec);
    00693     virtual void streamTo(SourceStream &s) const;
    00694   private:
    00695     VarDeclListNode *list;
    00696   };
    00697
    00698   class BlockNode : public StatementNode {
    00699   public:
    00700     BlockNode(SourceElementsNode *s) : source(s) {}
    00701     virtual void ref();
    00702     virtual bool deref();
    00703     virtual ~BlockNode();
    00704     virtual Completion execute(ExecState *exec);
    00705     virtual void processVarDecls(ExecState *exec);
    00706     virtual void streamTo(SourceStream &s) const;
    00707   private:
    00708     SourceElementsNode *source;
    00709   };
    00710
    00711   class EmptyStatementNode : public StatementNode {
    00712   public:
    00713     EmptyStatementNode() { } // debug
    00714     virtual Completion execute(ExecState *exec);
    00715     virtual void streamTo(SourceStream &s) const;
    00716   };
    00717
    00718   class ExprStatementNode : public StatementNode {
    00719   public:
    00720     ExprStatementNode(Node *e) : expr(e) { }
    00721     virtual void ref();
    00722     virtual bool deref();
    00723     virtual ~ExprStatementNode();
    00724     virtual Completion execute(ExecState *exec);
    00725     virtual void streamTo(SourceStream &s) const;
    00726   private:
    00727     Node *expr;
    00728   };
    00729
    00730   class IfNode : public StatementNode {
    00731   public:
    00732     IfNode(Node *e, StatementNode *s1, StatementNode *s2)
    00733       : expr(e), statement1(s1), statement2(s2) {}
    00734     virtual void ref();
    00735     virtual bool deref();
    00736     virtual ~IfNode();
    00737     virtual Completion execute(ExecState *exec);
    00738     virtual void processVarDecls(ExecState *exec);
    00739     virtual void streamTo(SourceStream &s) const;
    00740   private:
    00741     Node *expr;
    00742     StatementNode *statement1, *statement2;
    00743   };
    00744
    00745   class DoWhileNode : public StatementNode {
    00746   public:
    00747     DoWhileNode(StatementNode *s, Node *e) : statement(s), expr(e) {}
    00748     virtual void ref();
    00749     virtual bool deref();
    00750     virtual ~DoWhileNode();
    00751     virtual Completion execute(ExecState *exec);
    00752     virtual void processVarDecls(ExecState *exec);
    00753     virtual void streamTo(SourceStream &s) const;
    00754   private:
    00755     StatementNode *statement;
    00756     Node *expr;
    00757   };
    00758
    00759   class WhileNode : public StatementNode {
    00760   public:
    00761     WhileNode(Node *e, StatementNode *s) : expr(e), statement(s) {}
    00762     virtual void ref();
    00763     virtual bool deref();
    00764     virtual ~WhileNode();
    00765     virtual Completion execute(ExecState *exec);
    00766     virtual void processVarDecls(ExecState *exec);
    00767     virtual void streamTo(SourceStream &s) const;
    00768   private:
    00769     Node *expr;
    00770     StatementNode *statement;
    00771   };
    00772
    00773   class ForNode : public StatementNode {
    00774   public:
    00775     ForNode(Node *e1, Node *e2, Node *e3, StatementNode *s) :
    00776       expr1(e1), expr2(e2), expr3(e3), statement(s) {}
    00777     virtual void ref();
    00778     virtual bool deref();
    00779     virtual ~ForNode();
    00780     virtual Completion execute(ExecState *exec);
    00781     virtual void processVarDecls(ExecState *exec);
    00782     virtual void streamTo(SourceStream &s) const;
    00783   private:
    00784     Node *expr1, *expr2, *expr3;
    00785     StatementNode *statement;
    00786   };
    00787
    00788   class ForInNode : public StatementNode {
    00789   public:
    00790     ForInNode(Node *l, Node *e, StatementNode *s);
    00791     ForInNode(const UString *i, AssignExprNode *in, Node *e, StatementNode *s);
    00792     virtual void ref();
    00793     virtual bool deref();
    00794     virtual ~ForInNode();
    00795     virtual Completion execute(ExecState *exec);
    00796     virtual void processVarDecls(ExecState *exec);
    00797     virtual void streamTo(SourceStream &s) const;
    00798   private:
    00799     UString ident;
    00800     AssignExprNode *init;
    00801     Node *lexpr, *expr;
    00802     VarDeclNode *varDecl;
    00803     StatementNode *statement;
    00804   };
    00805
    00806   class ContinueNode : public StatementNode {
    00807   public:
    00808     ContinueNode() { }
    00809     ContinueNode(const UString *i) : ident(*i) { }
    00810     virtual Completion execute(ExecState *exec);
    00811     virtual void streamTo(SourceStream &s) const;
    00812   private:
    00813     UString ident;
    00814   };
    00815
    00816   class BreakNode : public StatementNode {
    00817   public:
    00818     BreakNode() { }
    00819     BreakNode(const UString *i) : ident(*i) { }
    00820     virtual Completion execute(ExecState *exec);
    00821     virtual void streamTo(SourceStream &s) const;
    00822   private:
    00823     UString ident;
    00824   };
    00825
    00826   class ReturnNode : public StatementNode {
    00827   public:
    00828     ReturnNode(Node *v) : value(v) {}
    00829     virtual void ref();
    00830     virtual bool deref();
    00831     virtual ~ReturnNode();
    00832     virtual Completion execute(ExecState *exec);
    00833     virtual void streamTo(SourceStream &s) const;
    00834   private:
    00835     Node *value;
    00836   };
    00837
    00838   class WithNode : public StatementNode {
    00839   public:
    00840     WithNode(Node *e, StatementNode *s) : expr(e), statement(s) {}
    00841     virtual void ref();
    00842     virtual bool deref();
    00843     virtual ~WithNode();
    00844     virtual Completion execute(ExecState *exec);
    00845     virtual void processVarDecls(ExecState *exec);
    00846     virtual void streamTo(SourceStream &s) const;
    00847   private:
    00848     Node *expr;
    00849     StatementNode *statement;
    00850   };
    00851
    00852   class CaseClauseNode: public Node {
    00853   public:
    00854     CaseClauseNode(Node *e, StatListNode *l) : expr(e), list(l) { }
    00855     virtual void ref();
    00856     virtual bool deref();
    00857     virtual ~CaseClauseNode();
    00858     Value value(ExecState *exec) const;
    00859     Completion evalStatements(ExecState *exec) const;
    00860     virtual void processVarDecls(ExecState *exec);
    00861     virtual void streamTo(SourceStream &s) const;
    00862   private:
    00863     Node *expr;
    00864     StatListNode *list;
    00865   };
    00866
    00867   class ClauseListNode : public Node {
    00868   public:
    00869     ClauseListNode(CaseClauseNode *c) : cl(c), nx(0L) { }
    00870     virtual void ref();
    00871     virtual bool deref();
    00872     virtual ~ClauseListNode();
    00873     ClauseListNode* append(CaseClauseNode *c);
    00874     Value value(ExecState *exec) const;
    00875     CaseClauseNode *clause() const { return cl; }
    00876     ClauseListNode *next() const { return nx; }
    00877     virtual void processVarDecls(ExecState *exec);
    00878     virtual void streamTo(SourceStream &s) const;
    00879   private:
    00880     CaseClauseNode *cl;
    00881     ClauseListNode *nx;
    00882   };
    00883
    00884   class CaseBlockNode: public Node {
    00885   public:
    00886     CaseBlockNode(ClauseListNode *l1, CaseClauseNode *d, ClauseListNode *l2)
    00887       : list1(l1), def(d), list2(l2) { }
    00888     virtual void ref();
    00889     virtual bool deref();
    00890     virtual ~CaseBlockNode();
    00891     Value value(ExecState *exec) const;
    00892     Completion evalBlock(ExecState *exec, const Value& input) const;
    00893     virtual void processVarDecls(ExecState *exec);
    00894     virtual void streamTo(SourceStream &s) const;
    00895   private:
    00896     ClauseListNode *list1;
    00897     CaseClauseNode *def;
    00898     ClauseListNode *list2;
    00899   };
    00900
    00901   class SwitchNode : public StatementNode {
    00902   public:
    00903     SwitchNode(Node *e, CaseBlockNode *b) : expr(e), block(b) { }
    00904     virtual void ref();
    00905     virtual bool deref();
    00906     virtual ~SwitchNode();
    00907     virtual Completion execute(ExecState *exec);
    00908     virtual void processVarDecls(ExecState *exec);
    00909     virtual void streamTo(SourceStream &s) const;
    00910   private:
    00911     Node *expr;
    00912     CaseBlockNode *block;
    00913   };
    00914
    00915   class LabelNode : public StatementNode {
    00916   public:
    00917     LabelNode(const UString *l, StatementNode *s) : label(*l), statement(s) { }
    00918     virtual void ref();
    00919     virtual bool deref();
    00920     virtual ~LabelNode();
    00921     virtual Completion execute(ExecState *exec);
    00922     virtual void processVarDecls(ExecState *exec);
    00923     virtual void streamTo(SourceStream &s) const;
    00924   private:
    00925     UString label;
    00926     StatementNode *statement;
    00927   };
    00928
    00929   class ThrowNode : public StatementNode {
    00930   public:
    00931     ThrowNode(Node *e) : expr(e) {}
    00932     virtual void ref();
    00933     virtual bool deref();
    00934     virtual ~ThrowNode();
    00935     virtual Completion execute(ExecState *exec);
    00936     virtual void streamTo(SourceStream &s) const;
    00937   private:
    00938     Node *expr;
    00939   };
    00940
    00941   class CatchNode : public StatementNode {
    00942   public:
    00943     CatchNode(const UString *i, StatementNode *b) : ident(*i), block(b) {}
    00944     virtual void ref();
    00945     virtual bool deref();
    00946     virtual ~CatchNode();
    00947     virtual Completion execute(ExecState *exec);
    00948     Completion execute(ExecState *exec, const Value &arg);
    00949     virtual void processVarDecls(ExecState *exec);
    00950     virtual void streamTo(SourceStream &s) const;
    00951   private:
    00952     UString ident;
    00953     StatementNode *block;
    00954   };
    00955
    00956   class FinallyNode : public StatementNode {
    00957   public:
    00958     FinallyNode(StatementNode *b) : block(b) {}
    00959     virtual void ref();
    00960     virtual bool deref();
    00961     virtual ~FinallyNode();
    00962     virtual Completion execute(ExecState *exec);
    00963     virtual void processVarDecls(ExecState *exec);
    00964     virtual void streamTo(SourceStream &s) const;
    00965   private:
    00966     StatementNode *block;
    00967   };
    00968
    00969   class TryNode : public StatementNode {
    00970   public:
    00971     TryNode(StatementNode *b, Node *c = 0L, Node *f = 0L)
    00972       : block(b), _catch((CatchNode*)c), _final((FinallyNode*)f) {}
    00973     virtual void ref();
    00974     virtual bool deref();
    00975     virtual ~TryNode();
    00976     virtual Completion execute(ExecState *exec);
    00977     virtual void processVarDecls(ExecState *exec);
    00978     virtual void streamTo(SourceStream &s) const;
    00979   private:
    00980     StatementNode *block;
    00981     CatchNode *_catch;
    00982     FinallyNode *_final;
    00983   };
    00984
    00985   class ParameterNode : public Node {
    00986   public:
    00987     ParameterNode(const UString *i) : id(*i), next(0L) { }
    00988     ParameterNode *append(const UString *i);
    00989     virtual void ref();
    00990     virtual bool deref();
    00991     virtual ~ParameterNode();
    00992     Value value(ExecState *exec) const;
    00993     UString ident() const { return id; }
    00994     ParameterNode *nextParam() const { return next; }
    00995     virtual void streamTo(SourceStream &s) const;
    00996   private:
    00997     UString id;
    00998     ParameterNode *next;
    00999   };
    01000
    01001   // inherited by ProgramNode
    01002   class FunctionBodyNode : public StatementNode {
    01003   public:
    01004     FunctionBodyNode(SourceElementsNode *s);
    01005     virtual void ref();
    01006     virtual bool deref();
    01007     virtual ~FunctionBodyNode();
    01008     Completion execute(ExecState *exec);
    01009     virtual void processFuncDecl(ExecState *exec);
    01010     virtual void processVarDecls(ExecState *exec);
    01011     void streamTo(SourceStream &s) const;
    01012   protected:
    01013     SourceElementsNode *source;
    01014   };
    01015
    01016   class FuncDeclNode : public StatementNode {
    01017   public:
    01018     FuncDeclNode(const UString *i, ParameterNode *p, FunctionBodyNode *b)
    01019       : ident(*i), param(p), body(b) { }
    01020     virtual void ref();
    01021     virtual bool deref();
    01022     virtual ~FuncDeclNode();
    01023     Completion execute(ExecState */*exec*/)
    01024       { /* empty */ return Completion(); }
    01025     void processFuncDecl(ExecState *exec);
    01026     virtual void streamTo(SourceStream &s) const;
    01027   private:
    01028     UString ident;
    01029     ParameterNode *param;
    01030     FunctionBodyNode *body;
    01031   };
    01032
    01033   class FuncExprNode : public Node {
    01034   public:
    01035     FuncExprNode(ParameterNode *p, FunctionBodyNode *b)
    01036         : param(p), body(b) { }
    01037     virtual void ref();
    01038     virtual bool deref();
    01039     virtual ~FuncExprNode();
    01040     Value value(ExecState *exec) const;
    01041     virtual void streamTo(SourceStream &s) const;
    01042   private:
    01043     ParameterNode *param;
    01044     FunctionBodyNode *body;
    01045   };
    01046
    01047   class SourceElementNode : public StatementNode {
    01048   public:
    01049     SourceElementNode(StatementNode *s) : statement(s), function(0L) { }
    01050     SourceElementNode(FuncDeclNode *f) : statement(0L), function(f) { }
    01051     virtual void ref();
    01052     virtual bool deref();
    01053     virtual ~SourceElementNode();
    01054     Completion execute(ExecState *exec);
    01055     virtual void processFuncDecl(ExecState *exec);
    01056     virtual void processVarDecls(ExecState *exec);
    01057     virtual void streamTo(SourceStream &s) const;
    01058   private:
    01059     StatementNode *statement;
    01060     FuncDeclNode *function;
    01061   };
    01062
    01063   // A linked list of source element nodes
    01064   class SourceElementsNode : public StatementNode {
    01065   public:
    01066     SourceElementsNode(SourceElementNode *s1) { element = s1; elements = 0L; }
    01067     SourceElementsNode(SourceElementsNode *s1, SourceElementNode *s2)
    01068       { elements = s1; element = s2; }
    01069     virtual void ref();
    01070     virtual bool deref();
    01071     virtual ~SourceElementsNode();
    01072     Completion execute(ExecState *exec);
    01073     virtual void processFuncDecl(ExecState *exec);
    01074     virtual void processVarDecls(ExecState *exec);
    01075     virtual void streamTo(SourceStream &s) const;
    01076   private:
    01077     SourceElementNode *element; // 'this' element
    01078     SourceElementsNode *elements; // pointer to next
    01079   };
    01080
    01081   class ProgramNode : public FunctionBodyNode {
    01082   public:
    01083     ProgramNode(SourceElementsNode *s);
    01084     ~ProgramNode();
    01085   private:
    01086     // Disallow copy
    01087     ProgramNode(const ProgramNode &other);
    01088   };
    01089
    01090 } // namespace
    01091
    01092 #endif

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 13:08:32 2004 by doxygen 1.3.4 written by Dimitri van Heesch, © 1997-2001