X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/1c7b7e1d87f698efb2e3daad0f6484829563d96f..e9813cd4f8f86fd822f2994d60cf4f9a9afe0221:/src/parse-gram.y

diff --git a/src/parse-gram.y b/src/parse-gram.y
index a8a1335b..5cefbce1 100644
--- a/src/parse-gram.y
+++ b/src/parse-gram.y
@@ -82,7 +82,6 @@ static int current_prec = 0;
 %locations
 %pure-parser
 %error-verbose
-%defines
 %name-prefix="gram_"
 %expect 0
 
@@ -184,12 +183,12 @@ static int current_prec = 0;
 
 /* braceless is not to be used for rule or symbol actions, as it
    calls code_props_plain_init.  */
-%type <chars> STRING "%{...%}" EPILOGUE braceless content content.opt
+%type <chars> STRING "%{...%}" EPILOGUE braceless content.opt
 %type <code> "{...}"
 %printer { fputs (quotearg_style (c_quoting_style, $$), stderr); }
 	 STRING
 %printer { fprintf (stderr, "{\n%s\n}", $$); }
-	 braceless content content.opt "{...}" "%{...%}" EPILOGUE
+	 braceless content.opt "{...}" "%{...%}" EPILOGUE
 
 %type <uniqstr> TYPE ID ID_COLON
 %printer { fprintf (stderr, "<%s>", $$); } TYPE
@@ -233,7 +232,20 @@ prologue_declaration:
       code_scanner_last_string_free ();
     }
 | "%debug"                         { debug_flag = true; }
-| "%define" STRING content.opt     { muscle_insert ($2, $3); }
+| "%define" STRING content.opt
+    {
+      /* FIXME: Special characters in $2 may break %define.
+         For example: `['.  */
+      char const name_prefix[] = "percent_define_";
+      char *name = xmalloc (sizeof name_prefix + strlen ($2));
+      strcpy (name, name_prefix);
+      strcpy (name + sizeof name_prefix - 1, $2);
+      if (muscle_find_const (name))
+        warn_at (@2, _("%s `%s' redefined"), "%define variable", $2);
+      MUSCLE_INSERT_STRING (uniqstr_new (name), $3);
+      free (name);
+      muscle_grow_user_name_list ("user_percent_define_variables", $2, @2);
+    }
 | "%defines"                       { defines_flag = true; }
 | "%defines" STRING
     {
@@ -316,6 +328,8 @@ grammar_declaration:
     }
 | "%code" STRING braceless
     {
+      /* FIXME: Special characters in $2 may break %code.
+         For example: `['.  */
       char const name_prefix[] = "percent_code_";
       char *name = xmalloc (sizeof name_prefix + strlen ($2));
       strcpy (name, name_prefix);
@@ -323,9 +337,7 @@ grammar_declaration:
       muscle_code_grow (uniqstr_new (name), $3, @3);
       free (name);
       code_scanner_last_string_free ();
-      muscle_grow ("used_percent_code_qualifiers", "[[", ",");
-      muscle_grow ("used_percent_code_qualifiers", $2, "");
-      muscle_grow ("used_percent_code_qualifiers", "]]", "");
+      muscle_grow_user_name_list ("user_percent_code_qualifiers", $2, @2);
     }
 ;
 
@@ -523,14 +535,9 @@ rhs:
 ;
 
 
-/*-----------*
- | content.  |
- *-----------*/
-
-content:
-  STRING
-| braceless
-;
+/*---------------*
+ | content.opt.  |
+ *--------------*/
 
 /* Some content or "1" by default. */
 content.opt:
@@ -539,10 +546,14 @@ content.opt:
       static char one[] = "1";
       $$ = one;
     }
-| content
+| STRING
 ;
 
 
+/*-------------*
+ | braceless.  |
+ *-------------*/
+
 braceless:
   "{...}"
     {