* configure.ac (AC_GNU_SOURCE): Use it instead of hand written code.

[bison.git] / src / print_graph.c

diff --git a/src/print_graph.c b/src/print_graph.c
index 76dc18331eb45a9980c938eb25418bc32c72dc96..fe0ee76d9d52b3faa98b54dad40e0c7c223d8ff0 100644 (file)
--- a/src/print_graph.c
+++ b/src/print_graph.c
@@ -19,7 +19,9 @@
    Boston, MA 02111-1307, USA.  */
 
 #include "system.h"
    Boston, MA 02111-1307, USA.  */
 
 #include "system.h"

+#include "quotearg.h"

 #include "files.h"
 #include "files.h"

+#include "symtab.h"

 #include "gram.h"
 #include "LR0.h"
 #include "lalr.h"
 #include "gram.h"
 #include "LR0.h"
 #include "lalr.h"


@@ -28,6 +30,7 @@
 #include "getargs.h"
 #include "state.h"
 #include "reader.h"
 #include "getargs.h"
 #include "state.h"
 #include "reader.h"

+#include "closure.h"

 #include "obstack.h"
 #include "print_graph.h"
 #include "vcg.h"
 #include "obstack.h"
 #include "print_graph.h"
 #include "vcg.h"


@@ -35,42 +38,74 @@
 static graph_t graph;
 static FILE *fgraph = NULL;
 
 static graph_t graph;
 static FILE *fgraph = NULL;
 

-/* This part will construct the label of nodes. */
+
+/*----------------------------.
+| Construct the node labels.  |
+`----------------------------*/
+

 static void
 static void

-print_core (int state, struct obstack *node_obstack)
+print_core (struct obstack *oout, state_t *state)

 {
   int i;
 {
   int i;

-  core *statep = state_table[state].state;
+  item_number_t *sitems = state->items;
+  int snritems   = state->nitems;

 
 

-  if (!statep->nitems)
-    return;
+  /* Output all the items of a state, not only its kernel.  */
+  if (report_flag & report_itemsets)
+    {
+      closure (sitems, snritems);
+      sitems = itemset;
+      snritems = nritemset;
+    }

 
 

-  for (i = 0; i < statep->nitems; i++)
+  obstack_fgrow1 (oout, "state %2d\n", state->number);
+  for (i = 0; i < snritems; i++)

     {
     {

-      short *sp;
-      short *sp1;
-      int rule;
+      item_number_t *sp;
+      item_number_t *sp1;
+      rule_number_t rule;

 
 

-      sp1 = sp = ritem + statep->items[i];
+      sp1 = sp = ritem + sitems[i];

 
 

-      while (*sp > 0)
+      while (*sp >= 0)

        sp++;
 
        sp++;
 

-      rule = -(*sp);
+      rule = item_number_as_rule_number (*sp);

 
       if (i)
 
       if (i)

-       obstack_1grow (node_obstack, '\n');
-      obstack_fgrow1 (node_obstack, "%d: ", rule);
-      obstack_fgrow1 (node_obstack, " %s  ->  ",
-                     tags[rule_table[rule].lhs]);
+       obstack_1grow (oout, '\n');
+      obstack_fgrow1 (oout, " %s -> ",
+                     rules[rule].lhs->tag);

 
 

-      for (sp = ritem + rule_table[rule].rhs; sp < sp1; sp++)
-       obstack_fgrow1 (node_obstack, "%s ", tags[*sp]);
+      for (sp = rules[rule].rhs; sp < sp1; sp++)
+       obstack_fgrow1 (oout, "%s ", symbols[*sp]->tag);

 
 

-      obstack_1grow (node_obstack, '.');
+      obstack_1grow (oout, '.');

 
 

-      for (/* Nothing */; *sp > 0; ++sp)
-       obstack_fgrow1 (node_obstack, " %s", tags[*sp]);
+      for (/* Nothing */; *sp >= 0; ++sp)
+       obstack_fgrow1 (oout, " %s", symbols[*sp]->tag);
+
+      /* Experimental feature: display the lookaheads. */
+      if (report_flag & report_lookaheads)
+       {
+         /* Find the reduction we are handling.  */
+         reductions_t *reds = state->reductions;
+         int redno = state_reduction_find (state, &rules[rule]);
+
+         /* Print them if there are.  */
+         if (reds->lookaheads && redno != -1)
+           {
+             bitset_iterator biter;
+             int k;
+             int not_first = 0;
+             obstack_sgrow (oout, "[");
+             BITSET_FOR_EACH (biter, reds->lookaheads[redno], k, 0)
+               obstack_fgrow2 (oout, "%s%s",
+                               not_first++ ? ", " : "",
+                               symbols[k]->tag);
+             obstack_sgrow (oout, "]");
+           }
+       }

     }
 }
 
     }
 }
 


@@ -81,105 +116,43 @@ print_core (int state, struct obstack *node_obstack)
 `---------------------------------------------------------------*/
 
 static void
 `---------------------------------------------------------------*/
 
 static void

-print_actions (int state, const char *node_name)
+print_actions (state_t *state, const char *node_name)

 {
   int i;
 
 {
   int i;
 

-  shifts   *shiftp = state_table[state].shifts;
-  reductions *redp = state_table[state].reductions;
-#if 0
-  errs       *errp = err_table[state];
-#endif
+  transitions_t     *transitions = state->transitions;
+  reductions_t *redp = state->reductions;

 
   static char buff[10];
   edge_t edge;
 
 
   static char buff[10];
   edge_t edge;
 

-  if (!shiftp->nshifts && !redp)
-    {
-#if 0
-      if (final_state == state)
-       obstack_sgrow (node_obstack, "$default: accept");
-      else
-       obstack_sgrow (node_obstack, "NO ACTIONS");
-#endif
-      return;
-    }
+  if (!transitions->num && !redp)
+    return;

 
 

-  for (i = 0; i < shiftp->nshifts; i++)
-    if (!SHIFT_IS_DISABLED (shiftp, i))
+  for (i = 0; i < transitions->num; i++)
+    if (!TRANSITION_IS_DISABLED (transitions, i))

       {
       {

-       int state1 = shiftp->shifts[i];
-       int symbol = state_table[state1].accessing_symbol;
+       state_t *state1 = transitions->states[i];
+       symbol_number_t symbol = state1->accessing_symbol;

 
        new_edge (&edge);
 
 
        new_edge (&edge);
 

-       if (state > state1)
+       if (state->number > state1->number)

          edge.type = back_edge;
        open_edge (&edge, fgraph);
        /* The edge source is the current node.  */
        edge.sourcename = node_name;
          edge.type = back_edge;
        open_edge (&edge, fgraph);
        /* The edge source is the current node.  */
        edge.sourcename = node_name;

-       sprintf (buff, "%d", state1);
+       sprintf (buff, "%d", state1->number);

        edge.targetname = buff;
        edge.targetname = buff;

-       edge.color = (symbol == 0) ? red : blue;
-       edge.label = tags[symbol];
+       /* Shifts are blue, gotos are green, and error is red. */
+       if (TRANSITION_IS_ERROR (transitions, i))
+         edge.color = red;
+       else
+         edge.color = TRANSITION_IS_SHIFT(transitions, i) ? blue : green;
+       edge.label = symbols[symbol]->tag;

        output_edge (&edge, fgraph);
        close_edge (fgraph);
       }
        output_edge (&edge, fgraph);
        close_edge (fgraph);
       }

-
-#if 0
-  if (errp)
-    {
-      int j, nerrs;
-
-      nerrs = errp->nerrs;
-
-      for (j = 0; j < nerrs; j++)
-       {
-         if (!errp->errs[j])
-           continue;
-         symbol = errp->errs[j];
-         /* If something has been added in the NODE_OBSTACK after
-            the declaration of the label, then we need a `\n'.
-         if (obstack_object_size (node_obstack) > node_output_size)
-           obstack_sgrow (node_obstack, "\n");
-           */
-         obstack_fgrow1 (node_obstack, _("%-4s\terror (nonassociative)"),
-                         tags[symbol]);
-       }
-      if (j > 0)
-       obstack_1grow (node_obstack, '\n');
-    }
-
-  if (state_table[state].consistent && redp)
-    {
-      rule = redp->rules[0];
-      symbol = rule_table[rule].lhs;
-      /*
-      if (obstack_object_size (node_obstack) > node_output_size)
-       obstack_sgrow (node_obstack, "\n");
-       */
-      obstack_fgrow2 (node_obstack, _("$default\treduce using rule %d (%s)"),
-                     rule, tags[symbol]);
-    }
-#endif
-
-  if (i < shiftp->nshifts)
-    for (; i < shiftp->nshifts; i++)
-      if (!SHIFT_IS_DISABLED (shiftp, i))
-       {
-         int state1 = shiftp->shifts[i];
-         int symbol = state_table[state1].accessing_symbol;
-
-         new_edge (&edge);
-         open_edge (&edge, fgraph);
-         edge.sourcename = node_name;
-         sprintf (buff, "%d", state1);
-         edge.targetname = buff;
-         edge.color = red;
-         edge.label = tags[symbol];
-         output_edge (&edge, fgraph);
-         close_edge (fgraph);
-       }

 }
 
 
 }
 
 


@@ -189,7 +162,7 @@ print_actions (int state, const char *node_name)
 `-------------------------------------------------------------*/
 
 static void
 `-------------------------------------------------------------*/
 
 static void

-print_state (int state)
+print_state (state_t *state)

 {
   static char name[10];
   struct obstack node_obstack;
 {
   static char name[10];
   struct obstack node_obstack;


@@ -198,9 +171,9 @@ print_state (int state)
   /* The labels of the nodes are their the items.  */
   obstack_init (&node_obstack);
   new_node (&node);
   /* The labels of the nodes are their the items.  */
   obstack_init (&node_obstack);
   new_node (&node);

-  sprintf (name, "%d", state);
+  sprintf (name, "%d", state->number);

   node.title = name;
   node.title = name;

-  print_core (state, &node_obstack);
+  print_core (&node_obstack, state);

   obstack_1grow (&node_obstack, '\0');
   node.label = obstack_finish (&node_obstack);
 
   obstack_1grow (&node_obstack, '\0');
   node.label = obstack_finish (&node_obstack);
 


@@ -218,10 +191,7 @@ print_state (int state)
 void
 print_graph (void)
 {
 void
 print_graph (void)
 {

-  int i;
-
-  if (!graph_flag)
-    return;
+  state_number_t i;

 
   /* Output file.  */
   fgraph = xfopen (spec_graph_file, "w");
 
   /* Output file.  */
   fgraph = xfopen (spec_graph_file, "w");


@@ -249,8 +219,10 @@ print_graph (void)
   output_graph (&graph, fgraph);
 
   /* Output nodes and edges. */
   output_graph (&graph, fgraph);
 
   /* Output nodes and edges. */

+  new_closure (nritems);

   for (i = 0; i < nstates; i++)
   for (i = 0; i < nstates; i++)

-    print_state (i);
+    print_state (states[i]);
+  free_closure ();

 
   /* Close graph. */
   close_graph (&graph, fgraph);
 
   /* Close graph. */
   close_graph (&graph, fgraph);