Change @dircategory from "GNU programming tools" to "Software development".

[bison.git] / src / lalr.c

diff --git a/src/lalr.c b/src/lalr.c
index b66e9c3f10a68be25c32d4abea5718df706025c9..e69c05c75d972c7d94bf1d4009325ad1482c88d7 100644 (file)
--- a/src/lalr.c
+++ b/src/lalr.c
@@ -42,10 +42,10 @@
 #include "relation.h"
 #include "symtab.h"
 
 #include "relation.h"
 #include "symtab.h"
 

-goto_number *goto_map = NULL;
-static goto_number ngotos = 0;
-state_number *from_state = NULL;
-state_number *to_state = NULL;
+goto_number *goto_map;
+static goto_number ngotos;
+state_number *from_state;
+state_number *to_state;

 
 /* Linked list of goto numbers.  */
 typedef struct goto_list
 
 /* Linked list of goto numbers.  */
 typedef struct goto_list


@@ -80,8 +80,8 @@ set_goto_map (void)
   state_number s;
   goto_number *temp_map;
 
   state_number s;
   goto_number *temp_map;
 

-  CALLOC (goto_map, nvars + 1);
-  CALLOC (temp_map, nvars + 1);
+  goto_map = xcalloc (nvars + 1, sizeof *goto_map);
+  temp_map = xnmalloc (nvars + 1, sizeof *temp_map);

 
   ngotos = 0;
   for (s = 0; s < nstates; ++s)
 
   ngotos = 0;
   for (s = 0; s < nstates; ++s)


@@ -90,15 +90,18 @@ set_goto_map (void)
       int i;
       for (i = sp->num - 1; i >= 0 && TRANSITION_IS_GOTO (sp, i); --i)
        {
       int i;
       for (i = sp->num - 1; i >= 0 && TRANSITION_IS_GOTO (sp, i); --i)
        {

-         if (ngotos >= GOTO_NUMBER_MAXIMUM)
-           abort ();

          ngotos++;
          ngotos++;

+
+         /* Abort if (ngotos + 1) would overflow.  */
+         if (ngotos == GOTO_NUMBER_MAXIMUM)
+           abort ();
+

          goto_map[TRANSITION_SYMBOL (sp, i) - ntokens]++;
        }
     }
 
   {
          goto_map[TRANSITION_SYMBOL (sp, i) - ntokens]++;
        }
     }
 
   {

-    int k = 0;
+    goto_number k = 0;

     int i;
     for (i = ntokens; i < nsyms; i++)
       {
     int i;
     for (i = ntokens; i < nsyms; i++)
       {


@@ -113,8 +116,8 @@ set_goto_map (void)
     temp_map[nsyms - ntokens] = ngotos;
   }
 
     temp_map[nsyms - ntokens] = ngotos;
   }
 

-  CALLOC (from_state, ngotos);
-  CALLOC (to_state, ngotos);
+  from_state = xcalloc (ngotos, sizeof *from_state);
+  to_state = xcalloc (ngotos, sizeof *to_state);

 
   for (s = 0; s < nstates; ++s)
     {
 
   for (s = 0; s < nstates; ++s)
     {


@@ -122,13 +125,13 @@ set_goto_map (void)
       int i;
       for (i = sp->num - 1; i >= 0 && TRANSITION_IS_GOTO (sp, i); --i)
        {
       int i;
       for (i = sp->num - 1; i >= 0 && TRANSITION_IS_GOTO (sp, i); --i)
        {

-         int k = temp_map[TRANSITION_SYMBOL (sp, i) - ntokens]++;
+         goto_number k = temp_map[TRANSITION_SYMBOL (sp, i) - ntokens]++;

          from_state[k] = s;
          to_state[k] = sp->states[i]->number;
        }
     }
 
          from_state[k] = s;
          to_state[k] = sp->states[i]->number;
        }
     }
 

-  XFREE (temp_map);
+  free (temp_map);

 }
 
 
 }
 
 


@@ -137,12 +140,12 @@ set_goto_map (void)
 | Map a state/symbol pair into its numeric representation.  |
 `----------------------------------------------------------*/
 
 | Map a state/symbol pair into its numeric representation.  |
 `----------------------------------------------------------*/
 

-static int
+static goto_number

 map_goto (state_number s0, symbol_number sym)
 {
 map_goto (state_number s0, symbol_number sym)
 {

-  int high;
-  int low;
-  int middle;
+  goto_number high;
+  goto_number low;
+  goto_number middle;

   state_number s;
 
   low = goto_map[sym - ntokens];
   state_number s;
 
   low = goto_map[sym - ntokens];


@@ -167,11 +170,11 @@ map_goto (state_number s0, symbol_number sym)
 static void
 initialize_F (void)
 {
 static void
 initialize_F (void)
 {

-  goto_number **reads = CALLOC (reads, ngotos);
-  goto_number *edge = CALLOC (edge, ngotos + 1);
-  int nedges = 0;
+  goto_number **reads = xnmalloc (ngotos, sizeof *reads);
+  goto_number *edge = xnmalloc (ngotos + 1, sizeof *edge);
+  goto_number nedges = 0;

 
 

-  int i;
+  goto_number i;

 
   F = bitsetv_create (ngotos, ntokens, BITSET_FIXED);
 
 
   F = bitsetv_create (ngotos, ntokens, BITSET_FIXED);
 


@@ -191,11 +194,13 @@ initialize_F (void)
            edge[nedges++] = map_goto (stateno, sym);
        }
 
            edge[nedges++] = map_goto (stateno, sym);
        }
 

-      if (nedges)
+      if (nedges == 0)
+       reads[i] = NULL;
+      else

        {
        {

-         CALLOC (reads[i], nedges + 1);
-         memcpy (reads[i], edge, nedges * sizeof (edge[0]));
-         reads[i][nedges] = -1;
+         reads[i] = xnmalloc (nedges + 1, sizeof reads[i][0]);
+         memcpy (reads[i], edge, nedges * sizeof edge[0]);
+         reads[i][nedges] = END_NODE;

          nedges = 0;
        }
     }
          nedges = 0;
        }
     }


@@ -203,18 +208,18 @@ initialize_F (void)
   relation_digraph (reads, ngotos, &F);
 
   for (i = 0; i < ngotos; i++)
   relation_digraph (reads, ngotos, &F);
 
   for (i = 0; i < ngotos; i++)

-    XFREE (reads[i]);
+    free (reads[i]);

 
 

-  XFREE (reads);
-  XFREE (edge);
+  free (reads);
+  free (edge);

 }
 
 
 static void
 }
 
 
 static void

-add_lookback_edge (state *s, rule *r, int gotono)
+add_lookback_edge (state *s, rule *r, goto_number gotono)

 {
   int ri = state_reduction_find (s, r);
 {
   int ri = state_reduction_find (s, r);

-  goto_list *sp = MALLOC (sp, 1);
+  goto_list *sp = xmalloc (sizeof *sp);

   sp->next = lookback[(s->reductions->look_ahead_tokens - LA) + ri];
   sp->value = gotono;
   lookback[(s->reductions->look_ahead_tokens - LA) + ri] = sp;
   sp->next = lookback[(s->reductions->look_ahead_tokens - LA) + ri];
   sp->value = gotono;
   lookback[(s->reductions->look_ahead_tokens - LA) + ri] = sp;


@@ -225,11 +230,11 @@ add_lookback_edge (state *s, rule *r, int gotono)
 static void
 build_relations (void)
 {
 static void
 build_relations (void)
 {

-  goto_number *edge = CALLOC (edge, ngotos + 1);
-  state_number *states1 = CALLOC (states1, ritem_longest_rhs () + 1);
-  int i;
+  goto_number *edge = xnmalloc (ngotos + 1, sizeof *edge);
+  state_number *states1 = xnmalloc (ritem_longest_rhs () + 1, sizeof *states1);
+  goto_number i;

 
 

-  CALLOC (includes, ngotos);
+  includes = xnmalloc (ngotos, sizeof *includes);

 
   for (i = 0; i < ngotos; i++)
     {
 
   for (i = 0; i < ngotos; i++)
     {


@@ -273,18 +278,20 @@ build_relations (void)
            }
        }
 
            }
        }
 

-      if (nedges)
+      if (nedges == 0)
+       includes[i] = NULL;
+      else

        {
          int j;
        {
          int j;

-         CALLOC (includes[i], nedges + 1);
+         includes[i] = xnmalloc (nedges + 1, sizeof includes[i][0]);

          for (j = 0; j < nedges; j++)
            includes[i][j] = edge[j];
          for (j = 0; j < nedges; j++)
            includes[i][j] = edge[j];

-         includes[i][nedges] = -1;
+         includes[i][nedges] = END_NODE;

        }
     }
 
        }
     }
 

-  XFREE (edge);
-  XFREE (states1);
+  free (edge);
+  free (states1);

 
   relation_transpose (&includes, ngotos);
 }
 
   relation_transpose (&includes, ngotos);
 }


@@ -294,14 +301,14 @@ build_relations (void)
 static void
 compute_FOLLOWS (void)
 {
 static void
 compute_FOLLOWS (void)
 {

-  int i;
+  goto_number i;

 
   relation_digraph (includes, ngotos, &F);
 
   for (i = 0; i < ngotos; i++)
 
   relation_digraph (includes, ngotos, &F);
 
   for (i = 0; i < ngotos; i++)

-    XFREE (includes[i]);
+    free (includes[i]);

 
 

-  XFREE (includes);
+  free (includes);

 }
 
 
 }
 
 


@@ -319,7 +326,7 @@ compute_look_ahead_tokens (void)
   for (i = 0; i < nLA; i++)
     LIST_FREE (goto_list, lookback[i]);
 
   for (i = 0; i < nLA; i++)
     LIST_FREE (goto_list, lookback[i]);
 

-  XFREE (lookback);
+  free (lookback);

   bitsetv_free (F);
 }
 
   bitsetv_free (F);
 }
 


@@ -378,7 +385,7 @@ initialize_LA (void)
     nLA = 1;
 
   pLA = LA = bitsetv_create (nLA, ntokens, BITSET_FIXED);
     nLA = 1;
 
   pLA = LA = bitsetv_create (nLA, ntokens, BITSET_FIXED);

-  CALLOC (lookback, nLA);
+  lookback = xcalloc (nLA, sizeof *lookback);

 
   /* Initialize the members LOOK_AHEAD_TOKENS for each state whose reductions
      require look-ahead tokens.  */
 
   /* Initialize the members LOOK_AHEAD_TOKENS for each state whose reductions
      require look-ahead tokens.  */