Attach actions to rules, instead of pre-outputting them to

[bison.git] / src / output.c

diff --git a/src/output.c b/src/output.c
index f38d63bae36c7ee9601e3024292c3f4dcbfe965e..7c2d0136721a335b2fc56eb116ff92a3453f55d7 100644 (file)
--- a/src/output.c
+++ b/src/output.c
@@ -285,8 +285,6 @@ output_rule_data (void)
                     0, 1, nrules + 1);
   muscle_insert ("r2", obstack_finish (&output_obstack));
   XFREE (short_tab);
-
-  XFREE (rule_table + 1);
 }
 
 /*------------------------------------------------------------------.
@@ -512,6 +510,34 @@ token_actions (void)
 }
 
 
+/*-----------------------------.
+| Output the actions to OOUT.  |
+`-----------------------------*/
+
+static void
+actions_output (struct obstack *oout)
+{
+  int rule;
+  for (rule = 1; rule < nrules + 1; ++rule)
+    if (rule_table[rule].action)
+      {
+       obstack_fgrow1 (oout, "  case %d:\n", rule);
+
+       if (!no_lines_flag)
+         obstack_fgrow2 (oout, muscle_find ("linef"),
+                         rule_table[rule].action_line,
+                         quotearg_style (c_quoting_style,
+                                         muscle_find ("filename")));
+       obstack_1grow (oout, '{');
+       obstack_sgrow (oout, rule_table[rule].action);
+       /* As a Bison extension, add the ending semicolon.  Since some
+          Yacc don't do that, help people using bison as a Yacc
+          finding their missing semicolons.  */
+       obstack_fgrow1 (oout, "%s}\n    break;\n\n", yacc_flag ? ";" : "");
+      }
+}
+
+
 static void
 save_column (int symbol, int default_state)
 {
@@ -931,10 +957,12 @@ output_parser (const char *skel_filename, struct obstack *oout)
          /* Output the right value, or see if it's something special.  */
          muscle_key = obstack_finish (&muscle_obstack);
          muscle_value = muscle_find (muscle_key);
-         if (muscle_value)
-           obstack_sgrow (oout, muscle_value);
+         if (!strcmp (muscle_key, "actions"))
+           actions_output (oout);
          else if (!strcmp (muscle_key, "line"))
            obstack_fgrow1 (oout, "%d", line + 1);
+         else if (muscle_value)
+           obstack_sgrow (oout, muscle_value);
          else
            {
              obstack_sgrow (oout, "%%");
@@ -1011,11 +1039,6 @@ prepare (void)
   MUSCLE_INSERT_INT ("ntokens", ntokens);
 
   MUSCLE_INSERT_INT ("locations-flag", locations_flag);
-
-  /* We need to save the actions in the muscle %%action.  */
-  obstack_1grow (&action_obstack, 0);
-  muscle_insert ("action", obstack_finish (&action_obstack));
-
 }
 
 /*----------------------------------------------------------.
@@ -1044,6 +1067,7 @@ output (void)
 
   output_master_parser ();
 
+  free (rule_table + 1);
   obstack_free (&muscle_obstack, 0);
   obstack_free (&output_obstack, 0);
   obstack_free (&action_obstack, 0);