lib-src/rewrite/twig_gen.cc

   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
  22 // 1994
  23 //////////////////////////////////////////////////////////////////////////////
  24
  25 //////////////////////////////////////////////////////////////////////////////
  26 //  This file contains the generator for the top-down tree parser
  27 //  with dynamic programming.  See Aho, Tsiang, et al. for details.
  28 //////////////////////////////////////////////////////////////////////////////
  29
  30 #include <iostream>
  31 #include <AD/rewrite/twig_gen.h>   // twig module
  32
  33 //////////////////////////////////////////////////////////////////////////////
  34 //  Constructors and destructor
  35 //////////////////////////////////////////////////////////////////////////////
  36 TwigGen:: TwigGen() {}
  37 TwigGen:: TwigGen(const TreeGrammar& Gram) { compile(Gram); }
  38 TwigGen::~TwigGen() {}
  39
  40 //////////////////////////////////////////////////////////////////////////////
  41 //  Method to compile a tree grammar into internal tables form
  42 //////////////////////////////////////////////////////////////////////////////
  43 void TwigGen::compile (const TreeGrammar& Gram)
  44 {  Super::compile(Gram);
  45 }
  46
  47 //////////////////////////////////////////////////////////////////////////////
  48 //  Method to print the tables
  49 //////////////////////////////////////////////////////////////////////////////
  50 std::ostream& TwigGen::gen_code(std::ostream& f, const char name[]) const
  51 {  Super::gen_code(f,name);
  52    return f;
  53 }