X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/e9813cd4f8f86fd822f2994d60cf4f9a9afe0221..9b33de72cd2469bedac2b5f0a48a8782571ea9db:/src/parse-gram.y

diff --git a/src/parse-gram.y b/src/parse-gram.y
index 5cefbce1..df92d642 100644
--- a/src/parse-gram.y
+++ b/src/parse-gram.y
@@ -190,9 +190,9 @@ static int current_prec = 0;
 %printer { fprintf (stderr, "{\n%s\n}", $$); }
 	 braceless content.opt "{...}" "%{...%}" EPILOGUE
 
-%type <uniqstr> TYPE ID ID_COLON
+%type <uniqstr> TYPE ID ID_COLON variable
 %printer { fprintf (stderr, "<%s>", $$); } TYPE
-%printer { fputs ($$, stderr); } ID
+%printer { fputs ($$, stderr); } ID variable
 %printer { fprintf (stderr, "%s:", $$); } ID_COLON
 
 %type <integer> INT
@@ -228,23 +228,14 @@ prologue_declaration:
       code_props_plain_init (&plain_code, $1, @1);
       code_props_translate_code (&plain_code);
       gram_scanner_last_string_free ();
-      prologue_augment (plain_code.code, @1, union_seen);
+      muscle_code_grow (union_seen ? "post_prologue" : "pre_prologue",
+                        plain_code.code, @1);
       code_scanner_last_string_free ();
     }
 | "%debug"                         { debug_flag = true; }
-| "%define" STRING content.opt
+| "%define" variable 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);
+      muscle_percent_define_insert ($2, @2, $3);
     }
 | "%defines"                       { defines_flag = true; }
 | "%defines" STRING
@@ -285,7 +276,30 @@ prologue_declaration:
 | "%push-parser"                { push_parser = true; pull_parser = false; }
 | "%push-pull-parser"           { push_parser = true; pull_parser = true; }
 | "%require" STRING             { version_check (&@2, $2); }
-| "%skeleton" STRING            { skeleton_arg ($2, 1, &@1); }
+| "%skeleton" STRING
+    {
+      char const *skeleton_user = $2;
+      if (strchr (skeleton_user, '/'))
+        {
+          size_t dir_length = strlen (current_file);
+          char *skeleton_build;
+          while (dir_length && current_file[dir_length - 1] != '/')
+            --dir_length;
+          while (dir_length && current_file[dir_length - 1] == '/')
+            --dir_length;
+          skeleton_build =
+            xmalloc (dir_length + 1 + strlen (skeleton_user) + 1);
+          if (dir_length > 0)
+            {
+              strncpy (skeleton_build, current_file, dir_length);
+              skeleton_build[dir_length++] = '/';
+            }
+          strcpy (skeleton_build + dir_length, skeleton_user);
+          skeleton_user = uniqstr_new (skeleton_build);
+          free (skeleton_build);
+        }
+      skeleton_arg (skeleton_user, 1, &@1);
+    }
 | "%token-table"                { token_table_flag = true; }
 | "%verbose"                    { report_flag = report_states; }
 | "%yacc"                       { yacc_flag = true; }
@@ -323,21 +337,15 @@ grammar_declaration:
     }
 | "%code" braceless
     {
-      muscle_code_grow ("percent_code", $2, @2);
+      /* Do not invoke muscle_percent_code_grow here since it invokes
+         muscle_user_name_list_grow.  */
+      muscle_code_grow ("percent_code()", $2, @2);
       code_scanner_last_string_free ();
     }
-| "%code" STRING braceless
+| "%code" ID 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);
-      strcpy (name + sizeof name_prefix - 1, $2);
-      muscle_code_grow (uniqstr_new (name), $3, @3);
-      free (name);
+      muscle_percent_code_grow ($2, @2, $3, @3);
       code_scanner_last_string_free ();
-      muscle_grow_user_name_list ("user_percent_code_qualifiers", $2, @2);
     }
 ;
 
@@ -354,28 +362,11 @@ union_name:
 ;
 
 grammar_declaration:
-  "%union" union_name "{...}"
+  "%union" union_name braceless
     {
-      char const *body = $3;
-
-      /* Concatenate the %union bodies.  If this is the first %union, make sure
-	 the synchronization line appears after the opening '{' so as not to
-	 confuse Doxygen.  Otherwise, turn the previous %union's trailing '}'
-	 into '\n', and omit the new %union's leading '{'.  */
-      if (!union_seen)
-	{
-	  muscle_grow ("stype", "{", "");
-	}
-      else
-	{
-	  char *code = muscle_find ("stype");
-	  code[strlen (code) - 1] = '\n';
-	}
-      body++;
-
       union_seen = true;
-      muscle_code_grow ("stype", body, @3);
-      gram_scanner_last_string_free ();
+      muscle_code_grow ("stype", $3, @3);
+      code_scanner_last_string_free ();
     }
 ;
 
@@ -535,16 +526,20 @@ rhs:
 ;
 
 
-/*---------------*
- | content.opt.  |
- *--------------*/
+/*----------------------------*
+ | variable and content.opt.  |
+ *---------------------------*/
+
+variable:
+  ID
+  | STRING { $$ = uniqstr_new ($1); } /* deprecated and not M4-friendly */
+  ;
 
-/* Some content or "1" by default. */
+/* Some content or empty by default. */
 content.opt:
   /* Nothing. */
     {
-      static char one[] = "1";
-      $$ = one;
+      $$ = "";
     }
 | STRING
 ;