nodes.h

khtml在gtk上的移植版本

  class EqualNode : public Node {
  public:
    EqualNode(Node *e1, Operator o, Node *e2)
      : expr1(e1), expr2(e2), oper(o) {}
    virtual void ref();
    virtual bool deref();
    Value evaluate(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Node *expr1, *expr2;
    Operator oper;
  };

  class BitOperNode : public Node {
  public:
    BitOperNode(Node *e1, Operator o, Node *e2) :
      expr1(e1), expr2(e2), oper(o) {}
    virtual void ref();
    virtual bool deref();
    Value evaluate(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Node *expr1, *expr2;
    Operator oper;
  };

  /**
   * expr1 && expr2, expr1 || expr2
   */
  class BinaryLogicalNode : public Node {
  public:
    BinaryLogicalNode(Node *e1, Operator o, Node *e2) :
      expr1(e1), expr2(e2), oper(o) {}
    virtual void ref();
    virtual bool deref();
    Value evaluate(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Node *expr1, *expr2;
    Operator oper;
  };

  /**
   * The ternary operator, "logical ? expr1 : expr2"
   */
  class ConditionalNode : public Node {
  public:
    ConditionalNode(Node *l, Node *e1, Node *e2) :
      logical(l), expr1(e1), expr2(e2) {}
    virtual void ref();
    virtual bool deref();
    Value evaluate(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Node *logical, *expr1, *expr2;
  };

  class AssignNode : public Node {
  public:
    AssignNode(Node *l, Operator o, Node *e) : left(l), oper(o), expr(e) {}
    virtual void ref();
    virtual bool deref();
    Value evaluate(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Node *left;
    Operator oper;
    Node *expr;
  };

  class CommaNode : public Node {
  public:
    CommaNode(Node *e1, Node *e2) : expr1(e1), expr2(e2) {}
    virtual void ref();
    virtual bool deref();
    Value evaluate(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Node *expr1, *expr2;
  };

  class StatListNode : public StatementNode {
  public:
    // list pointer is tail of a circular list, cracked in the CaseClauseNode ctor
    StatListNode(StatementNode *s);
    StatListNode(StatListNode *l, StatementNode *s);
    virtual void ref();
    virtual bool deref();
    virtual Completion execute(ExecState *exec);
    virtual void processVarDecls(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    friend class CaseClauseNode;
    StatementNode *statement;
    StatListNode *list;
  };

  class AssignExprNode : public Node {
  public:
    AssignExprNode(Node *e) : expr(e) {}
    virtual void ref();
    virtual bool deref();
    Value evaluate(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Node *expr;
  };

  class VarDeclNode : public Node {
  public:
    VarDeclNode(const Identifier &id, AssignExprNode *in);
    virtual void ref();
    virtual bool deref();
    Value evaluate(ExecState *exec);
    virtual void processVarDecls(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Identifier ident;
    AssignExprNode *init;
  };

  class VarDeclListNode : public Node {
  public:
    // list pointer is tail of a circular list, cracked in the ForNode/VarStatementNode ctor
    VarDeclListNode(VarDeclNode *v) : list(this), var(v) {}
    VarDeclListNode(VarDeclListNode *l, VarDeclNode *v)
      : list(l->list), var(v) { l->list = this; }
    virtual void ref();
    virtual bool deref();
    Value evaluate(ExecState *exec);
    virtual void processVarDecls(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    friend class ForNode;
    friend class VarStatementNode;
    VarDeclListNode *list;
    VarDeclNode *var;
  };

  class VarStatementNode : public StatementNode {
  public:
    VarStatementNode(VarDeclListNode *l)
      : list(l->list) { l->list = 0; }
    virtual void ref();
    virtual bool deref();
    virtual Completion execute(ExecState *exec);
    virtual void processVarDecls(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    VarDeclListNode *list;
  };

  class BlockNode : public StatementNode {
  public:
    BlockNode(SourceElementsNode *s);
    virtual void ref();
    virtual bool deref();
    virtual Completion execute(ExecState *exec);
    virtual void processVarDecls(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  protected:
    SourceElementsNode *source;
  };

  class EmptyStatementNode : public StatementNode {
  public:
    EmptyStatementNode() { } // debug
    virtual Completion execute(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  };

  class ExprStatementNode : public StatementNode {
  public:
    ExprStatementNode(Node *e) : expr(e) { }
    virtual void ref();
    virtual bool deref();
    virtual Completion execute(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Node *expr;
  };

  class IfNode : public StatementNode {
  public:
    IfNode(Node *e, StatementNode *s1, StatementNode *s2)
      : expr(e), statement1(s1), statement2(s2) {}
    virtual void ref();
    virtual bool deref();
    virtual Completion execute(ExecState *exec);
    virtual void processVarDecls(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Node *expr;
    StatementNode *statement1, *statement2;
  };

  class DoWhileNode : public StatementNode {
  public:
    DoWhileNode(StatementNode *s, Node *e) : statement(s), expr(e) {}
    virtual void ref();
    virtual bool deref();
    virtual Completion execute(ExecState *exec);
    virtual void processVarDecls(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    StatementNode *statement;
    Node *expr;
  };

  class WhileNode : public StatementNode {
  public:
    WhileNode(Node *e, StatementNode *s) : expr(e), statement(s) {}
    virtual void ref();
    virtual bool deref();
    virtual Completion execute(ExecState *exec);
    virtual void processVarDecls(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Node *expr;
    StatementNode *statement;
  };

  class ForNode : public StatementNode {
  public:
    ForNode(Node *e1, Node *e2, Node *e3, StatementNode *s) :
      expr1(e1), expr2(e2), expr3(e3), statement(s) {}
    ForNode(VarDeclListNode *e1, Node *e2, Node *e3, StatementNode *s) :
      expr1(e1->list), expr2(e2), expr3(e3), statement(s) { e1->list = 0; }
    virtual void ref();
    virtual bool deref();
    virtual Completion execute(ExecState *exec);
    virtual void processVarDecls(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Node *expr1, *expr2, *expr3;
    StatementNode *statement;
  };

  class ForInNode : public StatementNode {
  public:
    ForInNode(Node *l, Node *e, StatementNode *s);
    ForInNode(const Identifier &i, AssignExprNode *in, Node *e, StatementNode *s);
    virtual void ref();
    virtual bool deref();
    virtual Completion execute(ExecState *exec);
    virtual void processVarDecls(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Identifier ident;
    AssignExprNode *init;
    Node *lexpr, *expr;
    VarDeclNode *varDecl;
    StatementNode *statement;
  };

  class ContinueNode : public StatementNode {
  public:
    ContinueNode() { }
    ContinueNode(const Identifier &i) : ident(i) { }
    virtual Completion execute(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Identifier ident;
  };

  class BreakNode : public StatementNode {
  public:
    BreakNode() { }
    BreakNode(const Identifier &i) : ident(i) { }
    virtual Completion execute(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Identifier ident;
  };

  class ReturnNode : public StatementNode {
  public:
    ReturnNode(Node *v) : value(v) {}
    virtual void ref();
    virtual bool deref();
    virtual Completion execute(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Node *value;
  };

  class WithNode : public StatementNode {
  public:
    WithNode(Node *e, StatementNode *s) : expr(e), statement(s) {}
    virtual void ref();
    virtual bool deref();
    virtual Completion execute(ExecState *exec);
    virtual void processVarDecls(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Node *expr;
    StatementNode *statement;
  };

  class CaseClauseNode : public Node {
  public:
    CaseClauseNode(Node *e) : expr(e), list(0) { }
    CaseClauseNode(Node *e, StatListNode *l)
      : expr(e), list(l->list) { l->list = 0; }
    virtual void ref();
    virtual bool deref();
    Value evaluate(ExecState *exec);
    Completion evalStatements(ExecState *exec);
    virtual void processVarDecls(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Node *expr;
    StatListNode *list;
  };

  class ClauseListNode : public Node {
  public:
    // list pointer is tail of a circular list, cracked in the CaseBlockNode ctor
    ClauseListNode(CaseClauseNode *c) : cl(c), nx(this) { }
    ClauseListNode(ClauseListNode *n, CaseClauseNode *c)
      : cl(c), nx(n->nx) { n->nx = this; }
    virtual void ref();
    virtual bool deref();
    Value evaluate(ExecState *exec);
    CaseClauseNode *clause() const { return cl; }
    ClauseListNode *next() const { return nx; }
    virtual void processVarDecls(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    friend class CaseBlockNode;
    CaseClauseNode *cl;
    ClauseListNode *nx;
  };

  class CaseBlockNode : public Node {
  public:
    CaseBlockNode(ClauseListNode *l1, CaseClauseNode *d, ClauseListNode *l2);
    virtual void ref();
    virtual bool deref();
    Value evaluate(ExecState *exec);
    Completion evalBlock(ExecState *exec, const Value& input);
    virtual void processVarDecls(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    ClauseListNode *list1;
    CaseClauseNode *def;
    ClauseListNode *list2;
  };

  class SwitchNode : public StatementNode {
  public:
    SwitchNode(Node *e, CaseBlockNode *b) : expr(e), block(b) { }
    virtual void ref();
    virtual bool deref();
    virtual Completion execute(ExecState *exec);
    virtual void processVarDecls(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Node *expr;
    CaseBlockNode *block;
  };

  class LabelNode : public StatementNode {
  public:
    LabelNode(const Identifier &l, StatementNode *s) : label(l), statement(s) { }
    virtual void ref();
    virtual bool deref();
    virtual Completion execute(ExecState *exec);
    virtual void processVarDecls(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Identifier label;
    StatementNode *statement;
  };

  class ThrowNode : public StatementNode {
  public:
    ThrowNode(Node *e) : expr(e) {}
    virtual void ref();
    virtual bool deref();
    virtual Completion execute(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Node *expr;
  };

  class CatchNode : public StatementNode {
  public:
    CatchNode(const Identifier &i, StatementNode *b) : ident(i), block(b) {}
    virtual void ref();
    virtual bool deref();
    virtual Completion execute(ExecState *exec);
    Completion execute(ExecState *exec, const Value &arg);
    virtual void processVarDecls(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Identifier ident;
    StatementNode *block;
  };

  class FinallyNode : public StatementNode {
  public:
    FinallyNode(StatementNode *b) : block(b) {}
    virtual void ref();
    virtual bool deref();
    virtual Completion execute(ExecState *exec);
    virtual void processVarDecls(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    StatementNode *block;
  };

  class TryNode : public StatementNode {
  public:
    TryNode(StatementNode *b, CatchNode *c)
      : block(b), _catch(c), _final(0) {}
    TryNode(StatementNode *b, FinallyNode *f)
      : block(b), _catch(0), _final(f) {}
    TryNode(StatementNode *b, CatchNode *c, FinallyNode *f)
      : block(b), _catch(c), _final(f) {}
    virtual void ref();
    virtual bool deref();
    virtual Completion execute(ExecState *exec);
    virtual void processVarDecls(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    StatementNode *block;
    CatchNode *_catch;
    FinallyNode *_final;
  };

  class ParameterNode : public Node {
  public:
    // list pointer is tail of a circular list, cracked in the FuncDeclNode/FuncExprNode ctor
    ParameterNode(const Identifier &i) : id(i), next(this) { }
    ParameterNode(ParameterNode *list, const Identifier &i)
      : id(i), next(list->next) { list->next = this; }
    virtual void ref();
    virtual bool deref();
    Value evaluate(ExecState *exec);
    Identifier ident() { return id; }
    ParameterNode *nextParam() { return next; }
    virtual void streamTo(SourceStream &s) const;
  private:
    friend class FuncDeclNode;
    friend class FuncExprNode;
    Identifier id;
    ParameterNode *next;
  };

  // inherited by ProgramNode
  class FunctionBodyNode : public BlockNode {
  public:
    FunctionBodyNode(SourceElementsNode *s);
    void processFuncDecl(ExecState *exec);
  };

  class FuncDeclNode : public StatementNode {
  public:
    FuncDeclNode(const Identifier &i, FunctionBodyNode *b)
      : ident(i), param(0), body(b) { }
    FuncDeclNode(const Identifier &i, ParameterNode *p, FunctionBodyNode *b)
      : ident(i), param(p->next), body(b) { p->next = 0; }
    virtual void ref();
    virtual bool deref();
    Completion execute(ExecState */*exec*/)
      { /* empty */ return Completion(); }
    void processFuncDecl(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    Identifier ident;
    ParameterNode *param;
    FunctionBodyNode *body;
  };

  class FuncExprNode : public Node {
  public:
    FuncExprNode(FunctionBodyNode *b) : param(0), body(b) { }
    FuncExprNode(ParameterNode *p, FunctionBodyNode *b)
      : param(p->next), body(b) { p->next = 0; }
    virtual void ref();
    virtual bool deref();
    Value evaluate(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    ParameterNode *param;
    FunctionBodyNode *body;
  };

  // A linked list of source element nodes
  class SourceElementsNode : public StatementNode {
  public:
    // list pointer is tail of a circular list, cracked in the BlockNode (or subclass) ctor
    SourceElementsNode(StatementNode *s1);
    SourceElementsNode(SourceElementsNode *s1, StatementNode *s2);
    virtual void ref();
    virtual bool deref();
    Completion execute(ExecState *exec);
    void processFuncDecl(ExecState *exec);
    virtual void processVarDecls(ExecState *exec);
    virtual void streamTo(SourceStream &s) const;
  private:
    friend class BlockNode;
    StatementNode *element; // 'this' element
    SourceElementsNode *elements; // pointer to next
  };

  class ProgramNode : public FunctionBodyNode {
  public:
    ProgramNode(SourceElementsNode *s);
  };

}; // namespace

#endif