graphviz_digraph_parser.cpp

boost库提供标准的C++ API 配合dev c++使用,功能更加强大

/* Push a new state, which is found in  yystate  .  */
/* In all cases, when you get here, the value and location stacks
   have just been pushed. so pushing a state here evens the stacks.  */
yynewstate:

  *++yyssp = yystate;

  if (yyssp >= yyss + yystacksize - 1)
    {
      /* Give user a chance to reallocate the stack */
      /* Use copies of these so that the &'s don't force the real ones into memory. */
      YYSTYPE *yyvs1 = yyvs;
      short *yyss1 = yyss;
#ifdef YYLSP_NEEDED
      YYLTYPE *yyls1 = yyls;
#endif

      /* Get the current used size of the three stacks, in elements.  */
      int size = yyssp - yyss + 1;

#ifdef yyoverflow
      /* Each stack pointer address is followed by the size of
         the data in use in that stack, in bytes.  */
#ifdef YYLSP_NEEDED
      /* This used to be a conditional around just the two extra args,
         but that might be undefined if yyoverflow is a macro.  */
      yyoverflow("parser stack overflow",
                 &yyss1, size * sizeof (*yyssp),
                 &yyvs1, size * sizeof (*yyvsp),
                 &yyls1, size * sizeof (*yylsp),
                 &yystacksize);
#else
      yyoverflow("parser stack overflow",
                 &yyss1, size * sizeof (*yyssp),
                 &yyvs1, size * sizeof (*yyvsp),
                 &yystacksize);
#endif

      yyss = yyss1; yyvs = yyvs1;
#ifdef YYLSP_NEEDED
      yyls = yyls1;
#endif
#else /* no yyoverflow */
      /* Extend the stack our own way.  */
      if (yystacksize >= YYMAXDEPTH)
        {
          bgl_dir_error("parser stack overflow");
          if (yyfree_stacks)
            {
              free (yyss);
              free (yyvs);
#ifdef YYLSP_NEEDED
              free (yyls);
#endif
            }
          return 2;
        }
      yystacksize *= 2;
      if (yystacksize > YYMAXDEPTH)
        yystacksize = YYMAXDEPTH;
#ifndef YYSTACK_USE_ALLOCA
      yyfree_stacks = 1;
#endif
      yyss = (short *) YYSTACK_ALLOC (yystacksize * sizeof (*yyssp));
      __yy_memcpy ((char *)yyss, (char *)yyss1,
                   size * (unsigned int) sizeof (*yyssp));
      yyvs = (YYSTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yyvsp));
      __yy_memcpy ((char *)yyvs, (char *)yyvs1,
                   size * (unsigned int) sizeof (*yyvsp));
#ifdef YYLSP_NEEDED
      yyls = (YYLTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yylsp));
      __yy_memcpy ((char *)yyls, (char *)yyls1,
                   size * (unsigned int) sizeof (*yylsp));
#endif
#endif /* no yyoverflow */

      yyssp = yyss + size - 1;
      yyvsp = yyvs + size - 1;
#ifdef YYLSP_NEEDED
      yylsp = yyls + size - 1;
#endif

#if YYDEBUG != 0
      if (bgl_dir_debug)
        fprintf(stderr, "Stack size increased to %d\n", yystacksize);
#endif

      if (yyssp >= yyss + yystacksize - 1)
        YYABORT;
    }

#if YYDEBUG != 0
  if (bgl_dir_debug)
    fprintf(stderr, "Entering state %d\n", yystate);
#endif

  goto yybackup;
 yybackup:

/* Do appropriate processing given the current state.  */
/* Read a lookahead token if we need one and don't already have one.  */
/* yyresume: */

  /* First try to decide what to do without reference to lookahead token.  */

  yyn = yypact[yystate];
  if (yyn == YYFLAG)
    goto yydefault;

  /* Not known => get a lookahead token if don't already have one.  */

  /* bgl_dir_char is either YYEMPTY or YYEOF
     or a valid token in external form.  */

  if (bgl_dir_char == YYEMPTY)
    {
#if YYDEBUG != 0
      if (bgl_dir_debug)
        fprintf(stderr, "Reading a token: ");
#endif
      bgl_dir_char = YYLEX;
    }

  /* Convert token to internal form (in bgl_dir_char1) for indexing tables with */

  if (bgl_dir_char <= 0)                /* This means end of input. */
    {
      bgl_dir_char1 = 0;
      bgl_dir_char = YYEOF;             /* Don't call YYLEX any more */

#if YYDEBUG != 0
      if (bgl_dir_debug)
        fprintf(stderr, "Now at end of input.\n");
#endif
    }
  else
    {
      bgl_dir_char1 = YYTRANSLATE(bgl_dir_char);

#if YYDEBUG != 0
      if (bgl_dir_debug)
        {
          fprintf (stderr, "Next token is %d (%s", bgl_dir_char, yytname[bgl_dir_char1]);
          /* Give the individual parser a way to print the precise meaning
             of a token, for further debugging info.  */
#ifdef YYPRINT
          YYPRINT (stderr, bgl_dir_char, bgl_dir_lval);
#endif
          fprintf (stderr, ")\n");
        }
#endif
    }

  yyn += bgl_dir_char1;
  if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != bgl_dir_char1)
    goto yydefault;

  yyn = yytable[yyn];

  /* yyn is what to do for this token type in this state.
     Negative => reduce, -yyn is rule number.
     Positive => shift, yyn is new state.
       New state is final state => don't bother to shift,
       just return success.
     0, or most negative number => error.  */

  if (yyn < 0)
    {
      if (yyn == YYFLAG)
        goto yyerrlab;
      yyn = -yyn;
      goto yyreduce;
    }
  else if (yyn == 0)
    goto yyerrlab;

  if (yyn == YYFINAL)
    YYACCEPT;

  /* Shift the lookahead token.  */

#if YYDEBUG != 0
  if (bgl_dir_debug)
    fprintf(stderr, "Shifting token %d (%s), ", bgl_dir_char, yytname[bgl_dir_char1]);
#endif

  /* Discard the token being shifted unless it is eof.  */
  if (bgl_dir_char != YYEOF)
    bgl_dir_char = YYEMPTY;

  *++yyvsp = bgl_dir_lval;
#ifdef YYLSP_NEEDED
  *++yylsp = yylloc;
#endif

  /* count tokens shifted since error; after three, turn off error status.  */
  if (yyerrstatus) yyerrstatus--;

  yystate = yyn;
  goto yynewstate;

/* Do the default action for the current state.  */
yydefault:

  yyn = yydefact[yystate];
  if (yyn == 0)
    goto yyerrlab;

/* Do a reduction.  yyn is the number of a rule to reduce with.  */
yyreduce:
  yylen = yyr2[yyn];
  if (yylen > 0)
    yyval = yyvsp[1-yylen]; /* implement default value of the action */

#if YYDEBUG != 0
  if (bgl_dir_debug)
    {
      int i;

      fprintf (stderr, "Reducing via rule %d (line %d), ",
               yyn, yyrline[yyn]);

      /* Print the symbols being reduced, and their result.  */
      for (i = yyprhs[yyn]; yyrhs[i] > 0; i++)
        fprintf (stderr, "%s ", yytname[yyrhs[i]]);
      fprintf (stderr, " -> %s\n", yytname[yyr1[yyn]]);
    }
#endif


  switch (yyn) {

case 2:
#line 249 "graphviz_parser.y"
{yyval.i=0;;
    break;}
case 3:
#line 253 "graphviz_parser.y"
{
    std::string* name = static_cast<std::string*>(yyvsp[0].ptr);
    graphviz::previous_graph = static_cast<graphviz::Subgraph*>(g);
    graphviz::current_graph = static_cast<graphviz::Subgraph*>(g);
    graphviz::set_graph_name(*name);
    delete name;
  ;
    break;}
case 6:
#line 265 "graphviz_parser.y"
{yyval.ptr = yyvsp[0].ptr; ;
    break;}
case 7:
#line 265 "graphviz_parser.y"
{yyval.ptr=(void*)(new std::string("G")); ;
    break;}
case 14:
#line 279 "graphviz_parser.y"
{ 
    graphviz::set_attribute(*graphviz::current_graph,
                          graphviz::attribute_state); 
  ;
    break;}
case 15:
#line 285 "graphviz_parser.y"
{ graphviz::attribute_state = GRAPH_GRAPH_A; ;
    break;}
case 16:
#line 286 "graphviz_parser.y"
{ graphviz::attribute_state = GRAPH_NODE_A; ;
    break;}
case 17:
#line 287 "graphviz_parser.y"
{ graphviz::attribute_state = GRAPH_EDGE_A; ;
    break;}
case 20:
#line 294 "graphviz_parser.y"
{ 
    std::string* name  = static_cast<std::string*>(yyvsp[-2].ptr);
    std::string* value = static_cast<std::string*>(yyvsp[0].ptr);
    graphviz::attributes[*name] = *value; 
    delete name;
    delete value;
  ;
    break;}
case 27:
#line 306 "graphviz_parser.y"
{ yyval.i = 0; ;
    break;}
case 28:
#line 310 "graphviz_parser.y"
{ 
    graphviz::set_attribute(
         *static_cast<graphviz::Subgraph*>(graphviz::current_graph),
                            GRAPH_GRAPH_A);
  ;
    break;}
case 29:
#line 318 "graphviz_parser.y"
{ 
    graphviz::Vertex* temp   = static_cast<graphviz::Vertex*>(yyvsp[-1].ptr); 
    graphviz::current_vertex = *temp;
    graphviz::set_attribute(*static_cast<GRAPHVIZ_GRAPH*>(YYPARSE_PARAM),
                            NODE_A); 
    delete temp;
    yyval.i = 0;
  ;
    break;}
case 30:
#line 328 "graphviz_parser.y"
{ yyval.i=0; ;
    break;}
case 31:
#line 328 "graphviz_parser.y"
{ yyval.i=0; ;
    break;}
case 32:
#line 332 "graphviz_parser.y"
{
    std::string* name  = static_cast<std::string*>(yyvsp[0].ptr);
    std::pair<graphviz::Iter, bool> result = graphviz::lookup(*name); 
    if (result.second) {
      graphviz::current_vertex = result.first->second; 
      if (! graphviz::current_graph->is_root())
        boost::add_vertex(graphviz::current_vertex, *graphviz::current_graph);
    } else
      graphviz::current_vertex = graphviz::add_name(*name, *static_cast<GRAPHVIZ_GRAPH*>(YYPARSE_PARAM)) ; 
    graphviz::Vertex* temp = new graphviz::Vertex(graphviz::current_vertex);
    yyval.ptr = (void *)temp;
    graphviz::attribute_state = NODE_A;  
    delete name;
  ;
    break;}
case 33:
#line 346 "graphviz_parser.y"
{ yyval.ptr=yyvsp[0].ptr; ;
    break;}
case 34:
#line 350 "graphviz_parser.y"
{
    //consider port as a special properties ?? --need work here
    std::string* name = static_cast<std::string*>(yyvsp[-2].ptr);
    std::string* port = static_cast<std::string*>(yyvsp[0].ptr);

    std::pair<graphviz::Iter, bool> result = graphviz::lookup(*name); 
    if (result.second) 
      graphviz::current_vertex = result.first->second; 
    else
      graphviz::current_vertex = graphviz::add_name(*name, *static_cast<GRAPHVIZ_GRAPH*>(YYPARSE_PARAM)) ; 
    graphviz::Vertex* temp = new graphviz::Vertex(graphviz::current_vertex);
    yyval.ptr = (void *)temp;
    graphviz::attribute_state = NODE_A;  
    delete name;
    delete port;
  ;
    break;}
case 35:
#line 369 "graphviz_parser.y"
{

    typedef std::pair<void*, bool>* Ptr;
    Ptr source = static_cast<Ptr>(yyvsp[-2].ptr);

    for (std::vector<Ptr>::iterator it=graphviz::vlist.begin();
         it !=graphviz::vlist.end(); ++it) {