Allow specification of semantic predicates.

[bison.git] / src / reader.c

diff --git a/src/reader.c b/src/reader.c
index 250e4f8b74730ffdfce6542b45be8fc4f18fe38c..e64741cb2389b1a03cb809254255631a80ca93a9 100644 (file)
--- a/src/reader.c
+++ b/src/reader.c
@@ -1,7 +1,7 @@
 /* Input parser for Bison
 
    Copyright (C) 1984, 1986, 1989, 1992, 1998, 2000, 2001, 2002, 2003,
 /* Input parser for Bison
 
    Copyright (C) 1984, 1986, 1989, 1992, 1998, 2000, 2001, 2002, 2003,

-   2005, 2006, 2007, 2009 Free Software Foundation, Inc.
+   2005, 2006, 2007, 2009, 2010 Free Software Foundation, Inc.

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


@@ -377,7 +377,8 @@ grammar_midrule_action (void)
   code_props_rule_action_init (&midrule->action_props,
                                current_rule->action_props.code,
                                current_rule->action_props.location,
   code_props_rule_action_init (&midrule->action_props,
                                current_rule->action_props.code,
                                current_rule->action_props.location,

-                               midrule, 0);
+                               midrule, 0,
+                              current_rule->action_props.is_predicate);

   code_props_none_init (&current_rule->action_props);
 
   if (previous_rule_end)
   code_props_none_init (&current_rule->action_props);
 
   if (previous_rule_end)


@@ -468,14 +469,14 @@ grammar_current_rule_symbol_append (symbol *sym, location loc,
 
 void
 grammar_current_rule_action_append (const char *action, location loc,
 
 void
 grammar_current_rule_action_append (const char *action, location loc,

-                                   named_ref *name)
+                                   named_ref *name, bool is_predicate)

 {
   if (current_rule->action_props.code)
     grammar_midrule_action ();
   /* After all symbol declarations have been parsed, packgram invokes
      code_props_translate_code.  */
   code_props_rule_action_init (&current_rule->action_props, action, loc,
 {
   if (current_rule->action_props.code)
     grammar_midrule_action ();
   /* After all symbol declarations have been parsed, packgram invokes
      code_props_translate_code.  */
   code_props_rule_action_init (&current_rule->action_props, action, loc,

-                               current_rule, name);
+                               current_rule, name, is_predicate);

 }
 
 \f
 }
 
 \f


@@ -516,6 +517,7 @@ packgram (void)
       rules[ruleno].useful = true;
       rules[ruleno].action = p->action_props.code;
       rules[ruleno].action_location = p->action_props.location;
       rules[ruleno].useful = true;
       rules[ruleno].action = p->action_props.code;
       rules[ruleno].action_location = p->action_props.location;

+      rules[ruleno].is_predicate = p->action_props.is_predicate;

 
       /* If the midrule's $$ is set or its $n is used, remove the `$' from the
         symbol name so that it's a user-defined symbol so that the default
 
       /* If the midrule's $$ is set or its $n is used, remove the `$' from the
         symbol name so that it's a user-defined symbol so that the default