parsers: rename YY_NULL as YY_NULLPTR to avoid conflicts with Flex

[bison.git] / src / muscle-tab.c

diff --git a/src/muscle-tab.c b/src/muscle-tab.c
index bd75a7deb95cdbb3fdc872b6e153079b95799c87..cc5d01dffa240293042346e4043ab923df65b370 100644 (file)
--- a/src/muscle-tab.c
+++ b/src/muscle-tab.c
@@ -344,10 +344,9 @@ string_decode (char const *key)
 
 /* Reverse of muscle_location_grow.  */
 static location
-location_decode (char const *key)
+location_decode (char const *value)
 {
   location loc;
-  char const *value = muscle_find_const (key);
   aver (value);
   aver (*value == '[');
   aver (*++value == '[');
@@ -542,10 +541,8 @@ muscle_percent_define_ensure (char const *variable, location loc,
 
   /* Don't complain is VARIABLE is already defined, but be sure to set
      its value to VAL.  */
-  if (!muscle_find_const (name))
-    muscle_percent_define_insert (variable, loc, muscle_keyword, val,
-                                  MUSCLE_PERCENT_DEFINE_GRAMMAR_FILE);
-  if (muscle_percent_define_flag_if (variable) != value)
+  if (!muscle_find_const (name)
+      || muscle_percent_define_flag_if (variable) != value)
     muscle_percent_define_insert (variable, loc, muscle_keyword, val,
                                   MUSCLE_PERCENT_DEFINE_GRAMMAR_FILE);
 }
@@ -557,6 +554,21 @@ muscle_percent_define_use (char const *variable)
   muscle_insert (muscle_name (variable, "bison_variables"), "");
 }
 
+/* The value of %define variable VARIABLE (corresponding to FIELD, if
+   defined).  Do not register as used, but diagnose unset variables.  */
+
+static
+char const *
+muscle_percent_define_get_raw (char const *variable, char const *field)
+{
+  uniqstr name = muscle_name (variable, field);
+  char const *res = muscle_find_const (name);
+  if (!res)
+    complain (NULL, fatal, _("%s: undefined %%define variable %s"),
+              "muscle_percent_define_get_raw", quote (variable));
+  return res;
+}
+
 char *
 muscle_percent_define_get (char const *variable)
 {
@@ -568,25 +580,52 @@ muscle_percent_define_get (char const *variable)
   return value;
 }
 
+/* The kind of VARIABLE.  An error if undefined.  */
+static muscle_kind
+muscle_percent_define_get_kind (char const *variable)
+{
+  return muscle_kind_new (muscle_percent_define_get_raw (variable, "kind"));
+}
+
+/* Check the kind of VARIABLE.  An error if undefined.  */
+static void
+muscle_percent_define_check_kind (char const *variable, muscle_kind kind)
+{
+  if (muscle_percent_define_get_kind (variable) != kind)
+    {
+      location loc = muscle_percent_define_get_loc (variable);
+      switch (kind)
+        {
+        case muscle_code:
+          complain (&loc, Wdeprecated,
+                    "%%define variable '%s' requires '{...}' values",
+                    variable);
+          break;
+        case muscle_keyword:
+          complain (&loc, Wdeprecated,
+                    "%%define variable '%s' requires keyword values",
+                    variable);
+          break;
+        case muscle_string:
+          complain (&loc, Wdeprecated,
+                    "%%define variable '%s' requires '\"...\"' values",
+                    variable);
+          break;
+        }
+    }
+}
+
+
 location
 muscle_percent_define_get_loc (char const *variable)
 {
-  uniqstr loc_name = muscle_name (variable, "loc");
-  if (!muscle_find_const (loc_name))
-    complain (NULL, fatal, _("%s: undefined %%define variable %s"),
-              "muscle_percent_define_get_loc", quote (variable));
-  return location_decode (loc_name);
+  return location_decode (muscle_percent_define_get_raw (variable, "loc"));
 }
 
 char const *
 muscle_percent_define_get_syncline (char const *variable)
 {
-  uniqstr syncline_name = muscle_name (variable, "syncline");
-  char const *syncline = muscle_find_const (syncline_name);
-  if (!syncline)
-    complain (NULL, fatal, _("%s: undefined %%define variable %s"),
-              "muscle_percent_define_get_syncline", quote (variable));
-  return syncline;
+  return muscle_percent_define_get_raw (variable, "syncline");
 }
 
 bool
@@ -610,6 +649,7 @@ muscle_percent_define_flag_if (char const *variable)
   if (muscle_percent_define_ifdef (variable))
     {
       char *value = muscle_percent_define_get (variable);
+      muscle_percent_define_check_kind (variable, muscle_keyword);
       if (value[0] == '\0' || STREQ (value, "true"))
         result = true;
       else if (STREQ (value, "false"))
@@ -635,18 +675,20 @@ void
 muscle_percent_define_default (char const *variable, char const *value)
 {
   uniqstr name = muscle_name (variable, NULL);
-  uniqstr loc_name = muscle_name (variable, "loc");
-  uniqstr syncline_name = muscle_name (variable, "syncline");
   if (!muscle_find_const (name))
     {
-      location loc;
       MUSCLE_INSERT_STRING (name, value);
-      loc.start.file = loc.end.file = "<default value>";
-      loc.start.line = loc.end.line = -1;
-      loc.start.column = loc.end.column = -1;
-      muscle_insert (loc_name, "");
-      muscle_location_grow (loc_name, loc);
-      muscle_insert (syncline_name, "");
+      MUSCLE_INSERT_STRING (muscle_name (variable, "kind"), "keyword");
+      {
+        uniqstr loc_name = muscle_name (variable, "loc");
+        location loc;
+        loc.start.file = loc.end.file = "<default value>";
+        loc.start.line = loc.end.line = -1;
+        loc.start.column = loc.end.column = -1;
+        muscle_insert (loc_name, "");
+        muscle_location_grow (loc_name, loc);
+      }
+      muscle_insert (muscle_name (variable, "syncline"), "");
     }
 }
 
@@ -658,6 +700,7 @@ muscle_percent_define_check_values (char const * const *values)
       char const * const *variablep = values;
       uniqstr name = muscle_name (*variablep, NULL);
       char *value = string_decode (name);
+      muscle_percent_define_check_kind (*variablep, muscle_keyword);
       if (value)
         {
           for (++values; *values; ++values)