include/AD/ag/parsenodes.h

   1 //////////////////////////////////////////////////////////////////////////////
   2 // NOTICE:
   3 //
   4 // ADLib, Prop and their related set of tools and documentation are in the
   5 // public domain.   The author(s) of this software reserve no copyrights on
   6 // the source code and any code generated using the tools.  You are encouraged
   7 // to use ADLib and Prop to develop software, in both academic and commercial
   8 // settings, and are welcomed to incorporate any part of ADLib and Prop into
   9 // your programs.
  10 //
  11 // Although you are under no obligation to do so, we strongly recommend that
  12 // you give away all software developed using our tools.
  13 //
  14 // We also ask that credit be given to us when ADLib and/or Prop are used in
  15 // your programs, and that this notice be preserved intact in all the source
  16 // code.
  17 //
  18 // This software is still under development and we welcome(read crave for)
  19 // any suggestions and help from the users.
  20 //
  21 // Allen Leung (leunga@cs.nyu.edu)
  22 // 1994-1997
  23 //////////////////////////////////////////////////////////////////////////////
  24
  25 #ifndef attribute_grammar_parse_tree_nodes_h
  26 #define attribute_grammar_parse_tree_nodes_h
  27
  28 #include <AD/ag/parsetree.h>
  29
  30 //////////////////////////////////////////////////////////////////////////////
  31 //
  32 //  Terminal node of a parse tree.
  33 //
  34 //////////////////////////////////////////////////////////////////////////////
  35 class AGTerminal : public AGParseTree
  36 {  AGTerminal();                        // no default constructor
  37    AGTerminal(const AGTerminal&);       // no copy constructor
  38    void operator = (const AGTerminal&); // no assignment
  39 protected:
  40    const char * the_id;
  41 public:
  42             AGTerminal(const char * id, AGParseTree *, AGParseTree *);
  43    virtual ~AGTerminal();
  44
  45    virtual void print_tree (ostream&) const;
  46 };
  47
  48 //////////////////////////////////////////////////////////////////////////////
  49 //
  50 //  Non-Terminal node of a parse tree.
  51 //
  52 //////////////////////////////////////////////////////////////////////////////
  53 class AGNonterminal : public AGParseTree
  54 {  AGNonTerminal();                        // no default constructor
  55    AGNonTerminal(const AGNonTerminal&);    // no copy constructor
  56    void operator = (const AGNonTerminal&); // no assignment
  57 protected:
  58    int the_production_number;
  59 public:
  60             AGNonTerminal(int production_no, AGParseTree *, AGParseTree *);
  61    virtual ~AGNonTerminal();
  62
  63    virtual void print_tree (ostream&) const;
  64 };
  65
  66 #endif