* doc/bison.texinfo (Stack Overflow): xref to Recursion.

[bison.git] / src / vcg.c

diff --git a/src/vcg.c b/src/vcg.c
index f6466481e2362dc38cefb879b6ea4b9cee19cec4..a5a5a303663c8d0adc2c88e87dd69bb25ca8db78 100644 (file)
--- a/src/vcg.c
+++ b/src/vcg.c
@@ -1,5 +1,5 @@
 /* VCG description handler for Bison.
 /* VCG description handler for Bison.

-   Copyright 2001 Free Software Foundation, Inc.
+   Copyright 2001, 2002 Free Software Foundation, Inc.

 
    This file is part of Bison, the GNU Compiler Compiler.
 
 
    This file is part of Bison, the GNU Compiler Compiler.
 


@@ -21,6 +21,18 @@
 #include "system.h"
 #include "vcg.h"
 #include "vcg_defaults.h"
 #include "system.h"
 #include "vcg.h"
 #include "vcg_defaults.h"

+#include "quotearg.h"
+
+/* Return an unambiguous printable representated, for NAME, suitable
+   for C strings.  Use slot 2 since the user may use slots 0 and 1.
+   */
+
+static char const *
+quote (char const *name)
+{
+  return quotearg_n_style (2, c_quoting_style, name);
+}
+

 
 /* Initialize a graph with the default values. */
 void
 
 /* Initialize a graph with the default values. */
 void


@@ -232,7 +244,8 @@ get_color_str (enum color_e c)
     case orchid:       return "orchid";
     case black:                return "black";
     default:
     case orchid:       return "orchid";
     case black:                return "black";
     default:

-      assert (!"Not a default color.");
+#define A_known_default_color 0
+      assert (A_known_default_color);

     }
   return NULL;
 }
     }
   return NULL;
 }


@@ -246,7 +259,8 @@ get_textmode_str (enum textmode_e t)
     case left_justify: return "left_justify";
     case right_justify:        return "right_justify";
     default:
     case left_justify: return "left_justify";
     case right_justify:        return "right_justify";
     default:

-      assert (!"Not a text mode.");
+#define A_known_text_mode 0
+      assert (A_known_text_mode);

     }
   return NULL;
 }
     }
   return NULL;
 }


@@ -261,7 +275,8 @@ get_shape_str (enum shape_e s)
     case ellipse:      return "ellipse";
     case triangle:     return "triangle";
     default:
     case ellipse:      return "ellipse";
     case triangle:     return "triangle";
     default:

-      assert (!"Not a shape.");
+#define A_known_shape 0
+      assert (A_known_shape);

     }
   return NULL;
 }
     }
   return NULL;
 }


@@ -286,7 +301,8 @@ get_layoutalgorithm_str (enum layoutalgorithm_e l)
     case dfs:          return "dfs";
     case tree:         return "tree";
     default:
     case dfs:          return "dfs";
     case tree:         return "tree";
     default:

-      assert (!"Not a layout algorithm.");
+#define A_known_layout_algorithm 0
+      assert (A_known_layout_algorithm);

     }
   return NULL;
 }
     }
   return NULL;
 }


@@ -299,7 +315,8 @@ get_decision_str (enum decision_e d)
     case no:   return "no";
     case yes:  return "yes";
     default:
     case no:   return "no";
     case yes:  return "yes";
     default:

-      assert (!"Either yes nor no.");
+#define Either_yes_nor_no 0
+      assert (Either_yes_nor_no);

     }
   return NULL;
 }
     }
   return NULL;
 }


@@ -314,7 +331,8 @@ get_orientation_str (enum orientation_e o)
     case left_to_right: return "left_to_right";
     case right_to_left: return "right_to_left";
     default:
     case left_to_right: return "left_to_right";
     case right_to_left: return "right_to_left";
     default:

-      assert (!"Not an orientation.");
+#define A_knownn_orientation 0
+      assert (A_knownn_orientation);

     }
   return NULL;
 }
     }
   return NULL;
 }


@@ -328,7 +346,8 @@ get_node_alignement_str (enum alignement_e a)
     case top:          return "top";
     case bottom:       return "bottom";
     default:
     case top:          return "top";
     case bottom:       return "bottom";
     default:

-      assert (!"Not an alignement.");
+#define A_known_alignement 0
+      assert (A_known_alignement);

     }
   return NULL;
 }
     }
   return NULL;
 }


@@ -341,7 +360,8 @@ get_arrow_mode_str (enum arrow_mode_e a)
     case fixed:                return "fixed";
     case free_a:       return "free";
     default:
     case fixed:                return "fixed";
     case free_a:       return "free";
     default:

-      assert (!"Not an arrow mode.");
+#define A_known_arrow_mode 0
+      assert (A_known_arrow_mode);

     }
   return NULL;
 }
     }
   return NULL;
 }


@@ -356,7 +376,8 @@ get_crossing_type_str (enum crossing_type_e c)
     case barymedian:   return "barymedian";
     case medianbary:   return "medianbary";
     default:
     case barymedian:   return "barymedian";
     case medianbary:   return "medianbary";
     default:

-      assert (!"Not a crossing type.");
+#define A_known_crossing_type 0
+      assert (A_known_crossing_type);

     }
   return NULL;
 }
     }
   return NULL;
 }


@@ -372,7 +393,8 @@ get_view_str (enum view_e v)
     case fcfish:       return "fcfish";
     case fpfish:       return "fpfish";
     default:
     case fcfish:       return "fcfish";
     case fpfish:       return "fpfish";
     default:

-      assert (!"Not a view.");
+#define A_known_view 0
+      assert (A_known_view);

     }
   return NULL;
 }
     }
   return NULL;
 }


@@ -387,7 +409,8 @@ get_linestyle_str (enum linestyle_e l)
     case dotted:       return "dotted";
     case invisible:    return "invisible";
     default:
     case dotted:       return "dotted";
     case invisible:    return "invisible";
     default:

-      assert (!"Not a line style.");
+#define A_known_line_style 0
+      assert (A_known_line_style);

     }
   return NULL;
 }
     }
   return NULL;
 }


@@ -401,7 +424,8 @@ get_arrowstyle_str (enum arrowstyle_e a)
     case line: return "line";
     case none: return "none";
     default:
     case line: return "line";
     case none: return "none";
     default:

-      assert (!"Not an arrow style.");
+#define A_known_arrow_style 0
+      assert (A_known_arrow_style);

     }
   return NULL;
 }
     }
   return NULL;
 }


@@ -429,7 +453,7 @@ void
 add_classname (graph_t *g, int val, const char *name)
 {
   struct classname_s *classname;
 add_classname (graph_t *g, int val, const char *name)
 {
   struct classname_s *classname;

-  
+

   classname = XMALLOC (struct classname_s, 1);
   classname->no = val;
   classname->name = name;
   classname = XMALLOC (struct classname_s, 1);
   classname->no = val;
   classname->name = name;


@@ -441,7 +465,7 @@ void
 add_infoname (graph_t *g, int integer, const char *string)
 {
   struct infoname_s *infoname;
 add_infoname (graph_t *g, int integer, const char *string)
 {
   struct infoname_s *infoname;

-  
+

   infoname = XMALLOC (struct infoname_s, 1);
   infoname->integer = integer;
   infoname->string = string;
   infoname = XMALLOC (struct infoname_s, 1);
   infoname->integer = integer;
   infoname->string = string;


@@ -451,11 +475,11 @@ add_infoname (graph_t *g, int integer, const char *string)
 
 /* Build a colorentry struct and add it to the list.  */
 void
 
 /* Build a colorentry struct and add it to the list.  */
 void

-add_colorentry (graph_t *g, int color_idx, int red_cp, 
+add_colorentry (graph_t *g, int color_idx, int red_cp,

                int green_cp, int blue_cp)
 {
   struct colorentry_s *ce;
                int green_cp, int blue_cp)
 {
   struct colorentry_s *ce;

-  
+

   ce = XMALLOC (struct colorentry_s, 1);
   ce->color_index = color_idx;
   ce->red_cp = red_cp;
   ce = XMALLOC (struct colorentry_s, 1);
   ce->color_index = color_idx;
   ce->red_cp = red_cp;


@@ -556,9 +580,9 @@ void
 output_node (node_t *node, FILE *fout)
 {
   if (node->title != N_TITLE)
 output_node (node_t *node, FILE *fout)
 {
   if (node->title != N_TITLE)

-    fprintf (fout, "\t\ttitle:\t\"%s\"\n", node->title);
+    fprintf (fout, "\t\ttitle:\t%s\n", quote (node->title));

   if (node->label != N_LABEL)
   if (node->label != N_LABEL)

-    fprintf (fout, "\t\tlabel:\t\"%s\"\n", node->label);
+    fprintf (fout, "\t\tlabel:\t%s\n", quote (node->label));

 
   if ((node->locx != N_LOCX) && (node->locy != N_LOCY))
     fprintf (fout, "\t\tloc { x: %d  y: %d }\t\n", node->locx, node->locy);
 
   if ((node->locx != N_LOCX) && (node->locy != N_LOCY))
     fprintf (fout, "\t\tloc { x: %d  y: %d }\t\n", node->locx, node->locy);


@@ -600,12 +624,13 @@ output_node (node_t *node, FILE *fout)
     fprintf (fout, "\t\tbordercolor:\t%s\n",
             get_color_str (node->bordercolor));
 
     fprintf (fout, "\t\tbordercolor:\t%s\n",
             get_color_str (node->bordercolor));
 

-  if (node->infos[0])
-    fprintf (fout, "\t\tinfo1:\t\"%s\"\n", node->infos[0]);
-  if (node->infos[1])
-    fprintf (fout, "\t\tinfo2:\t\"%s\"\n", node->infos[1]);
-  if (node->infos[2])
-    fprintf (fout, "\t\tinfo3:\t\"%s\"\n", node->infos[2]);
+  {
+    int i;
+    for (i = 0; i < 3; ++i)
+      if (node->infos[i])
+       fprintf (fout, "\t\tinfo%d:\t%s\n",
+                i, quote (node->infos[i]));
+  }

 }
 
 void
 }
 
 void


@@ -614,16 +639,16 @@ output_edge (edge_t *edge, FILE *fout)
   /* FIXME: SOURCENAME and TARGETNAME are mandatory
      so it has to be fatal not to give these informations.  */
   if (edge->sourcename != E_SOURCENAME)
   /* FIXME: SOURCENAME and TARGETNAME are mandatory
      so it has to be fatal not to give these informations.  */
   if (edge->sourcename != E_SOURCENAME)

-    fprintf (fout, "\t\tsourcename:\t\"%s\"\n", edge->sourcename);
+    fprintf (fout, "\t\tsourcename:\t%s\n", quote (edge->sourcename));

   if (edge->targetname != E_TARGETNAME)
   if (edge->targetname != E_TARGETNAME)

-    fprintf (fout, "\t\ttargetname:\t\"%s\"\n", edge->targetname);
+    fprintf (fout, "\t\ttargetname:\t%s\n", quote (edge->targetname));

 
   if (edge->label != E_LABEL)
 
   if (edge->label != E_LABEL)

-    fprintf (fout, "\t\tlabel:\t\"%s\"\n", edge->label);
+    fprintf (fout, "\t\tlabel:\t%s\n", quote (edge->label));

 
   if (edge->linestyle != E_LINESTYLE)
 
   if (edge->linestyle != E_LINESTYLE)

-    fprintf (fout, "\t\tlinestyle:\t\"%s\"\n", 
-            get_linestyle_str(edge->linestyle));
+    fprintf (fout, "\t\tlinestyle:\t%s\n",
+            quote (get_linestyle_str(edge->linestyle)));

 
   if (edge->thickness != E_THICKNESS)
     fprintf (fout, "\t\tthickness:\t%d\n", edge->thickness);
 
   if (edge->thickness != E_THICKNESS)
     fprintf (fout, "\t\tthickness:\t%d\n", edge->thickness);


@@ -666,16 +691,16 @@ void
 output_graph (graph_t *graph, FILE *fout)
 {
   if (graph->title)
 output_graph (graph_t *graph, FILE *fout)
 {
   if (graph->title)

-    fprintf (fout, "\ttitle:\t\"%s\"\n", graph->title);
+    fprintf (fout, "\ttitle:\t%s\n", quote (graph->title));

   if (graph->label)
   if (graph->label)

-    fprintf (fout, "\tlabel:\t\"%s\"\n", graph->label);
+    fprintf (fout, "\tlabel:\t%s\n", quote (graph->label));

 
 

-  if (graph->infos[0])
-    fprintf (fout, "\tinfo1:\t\"%s\"\n", graph->infos[0]);
-  if (graph->infos[1])
-    fprintf (fout, "\tinfo2:\t\"%s\"\n", graph->infos[1]);
-  if (graph->infos[2])
-    fprintf (fout, "\tinfo3:\t\"%s\"\n", graph->infos[2]);
+  {
+    int i;
+    for (i = 0; i < 3; ++i)
+      if (graph->infos[i])
+       fprintf (fout, "\tinfo%d:\t%s\n", i, quote (graph->infos[i]));
+  }

 
   if (graph->color != G_COLOR)
     fprintf (fout, "\tcolor:\t%s\n", get_color_str (graph->color));
 
   if (graph->color != G_COLOR)
     fprintf (fout, "\tcolor:\t%s\n", get_color_str (graph->color));


@@ -711,11 +736,11 @@ output_graph (graph_t *graph, FILE *fout)
 
   if (graph->shape != G_SHAPE)
     fprintf (fout, "\tshape:\t%s\n", get_shape_str (graph->shape));
 
   if (graph->shape != G_SHAPE)
     fprintf (fout, "\tshape:\t%s\n", get_shape_str (graph->shape));

-  
+

   if (graph->vertical_order != G_VERTICAL_ORDER)
   if (graph->vertical_order != G_VERTICAL_ORDER)

-    fprintf (fout, "\tvertical_order:\t%d\n", graph->vertical_order);  
+    fprintf (fout, "\tvertical_order:\t%d\n", graph->vertical_order);

   if (graph->horizontal_order != G_HORIZONTAL_ORDER)
   if (graph->horizontal_order != G_HORIZONTAL_ORDER)

-    fprintf (fout, "\thorizontal_order:\t%d\n", graph->horizontal_order);  
+    fprintf (fout, "\thorizontal_order:\t%d\n", graph->horizontal_order);

 
   if (graph->xmax != G_XMAX)
     fprintf (fout, "\txmax:\t%d\n", graph->xmax);
 
   if (graph->xmax != G_XMAX)
     fprintf (fout, "\txmax:\t%d\n", graph->xmax);


@@ -743,8 +768,8 @@ output_graph (graph_t *graph, FILE *fout)
 
   if (graph->hidden != G_HIDDEN)
     fprintf (fout, "\thidden:\t%d\n", graph->hidden);
 
   if (graph->hidden != G_HIDDEN)
     fprintf (fout, "\thidden:\t%d\n", graph->hidden);

-  
-  /* FIXME: Unallocate struct list if required.  
+
+  /* FIXME: Unallocate struct list if required.

      Maybe with a little function.  */
   if (graph->classname != G_CLASSNAME)
     {
      Maybe with a little function.  */
   if (graph->classname != G_CLASSNAME)
     {


@@ -765,15 +790,15 @@ output_graph (graph_t *graph, FILE *fout)
   if (graph->colorentry != G_COLORENTRY)
     {
       struct colorentry_s *ite;
   if (graph->colorentry != G_COLORENTRY)
     {
       struct colorentry_s *ite;

-      
+

       for (ite = graph->colorentry; ite; ite = ite->next)
       for (ite = graph->colorentry; ite; ite = ite->next)

-       {       
-         fprintf (fout, "\tcolorentry %d :\t%d %d %d\n", 
-                  ite->color_index, 
+       {
+         fprintf (fout, "\tcolorentry %d :\t%d %d %d\n",
+                  ite->color_index,

                   ite->red_cp,
                   ite->green_cp,
                   ite->blue_cp);
                   ite->red_cp,
                   ite->green_cp,
                   ite->blue_cp);

-       }    
+       }

     }
 
   if (graph->layoutalgorithm != G_LAYOUTALGORITHM)
     }
 
   if (graph->layoutalgorithm != G_LAYOUTALGORITHM)