* src/symtab.h (SALIAS, SUNDEF): Rename as...

[bison.git] / src / gram.c

diff --git a/src/gram.c b/src/gram.c
index 1120b89784052d47955509f7df7d3e5699b35277..75546603758b7f85cdd0711c89a657b357862e9d 100644 (file)
--- a/src/gram.c
+++ b/src/gram.c
@@ -21,8 +21,9 @@
 
 #include "system.h"
 #include "quotearg.h"
-#include "gram.h"
 #include "symtab.h"
+#include "gram.h"
+#include "reduce.h"
 #include "reader.h"
 
 /* comments for these variables are in gram.h  */
@@ -44,8 +45,6 @@ token_number_t start_symbol = 0;
 
 int max_user_token_number = 256;
 
-int semantic_parser = 0;
-
 int pure_parser = 0;
 
 
@@ -102,3 +101,61 @@ ritem_longest_rhs (void)
 
   return max;
 }
+
+
+/*-------------------.
+| Dump the grammar.  |
+`-------------------*/
+
+void
+grammar_dump (FILE *out, const char *title)
+{
+  int i;
+  item_number_t *r;
+
+  fprintf (out, "%s\n\n", title);
+  fprintf (out,
+          "ntokens = %d, nvars = %d, nsyms = %d, nrules = %d, nritems = %d\n\n",
+          ntokens, nvars, nsyms, nrules, nritems);
+  fprintf (out, "Variables\n---------\n\n");
+  fprintf (out, "Value  Sprec  Sassoc  Tag\n");
+  for (i = ntokens; i < nsyms; i++)
+    fprintf (out, "%5d  %5d   %5d  %s\n",
+            i,
+            symbols[i]->prec, symbols[i]->assoc,
+            quotearg_style (escape_quoting_style, symbols[i]->tag));
+  fprintf (out, "\n\n");
+  fprintf (out, "Rules\n-----\n\n");
+  fprintf (out, "Num (Prec, Assoc, Useful, Ritem Range) Lhs -> Rhs (Ritem range) [Num]\n");
+  for (i = 1; i < nrules + nuseless_productions + 1; i++)
+    {
+      int rhs_count = 0;
+      /* Find the last RHS index in ritems. */
+      for (r = rules[i].rhs; *r >= 0; ++r)
+       ++rhs_count;
+      fprintf (out, "%3d (%2d, %2d, %2d, %2d-%2d)   %2d ->",
+              i - 1,
+              rules[i].prec ? rules[i].prec->prec : 0,
+              rules[i].prec ? rules[i].prec->assoc : 0,
+              rules[i].useful,
+              rules[i].rhs - ritem,
+              rules[i].rhs - ritem + rhs_count - 1,
+              rules[i].lhs->number);
+      /* Dumped the RHS. */
+      for (r = rules[i].rhs; *r >= 0; r++)
+       fprintf (out, " %3d", *r);
+      fprintf (out, "  [%d]\n", -(*r) - 1);
+    }
+  fprintf (out, "\n\n");
+  fprintf (out, "Rules interpreted\n-----------------\n\n");
+  for (i = 1; i < nrules + nuseless_productions + 1; i++)
+    {
+      fprintf (out, "%-5d  %s :",
+              i, quotearg_style (escape_quoting_style, rules[i].lhs->tag));
+      for (r = rules[i].rhs; *r >= 0; r++)
+       fprintf (out, " %s",
+                quotearg_style (escape_quoting_style, symbols[*r]->tag));
+      fputc ('\n', out);
+    }
+  fprintf (out, "\n\n");
+}