c: improve the definition of public types

[bison.git] / data / c.m4

diff --git a/data/c.m4 b/data/c.m4
index 6c2f552583ef3757f1c44996fd586c45c1039ea6..89ad4fd14acf517bb40ae9bff3e3840ac277b3b4 100644 (file)
--- a/data/c.m4
+++ b/data/c.m4
@@ -58,20 +58,17 @@ m4_define([b4_cpp_guard_close],
 # from OPEN.  That's why we don't patsubst([$1], [^\(.\)], [   \1]).
 #
 # Prefix all the output lines with PREFIX.
 # from OPEN.  That's why we don't patsubst([$1], [^\(.\)], [   \1]).
 #
 # Prefix all the output lines with PREFIX.

-m4_define([b4_comment_], [$2[]m4_bpatsubst([$1], [
+m4_define([b4_comment_],
+[$2[]m4_bpatsubst(m4_expand([$1]), [

 \(.\)], [
 $3\1])$4])
 
 
 # b4_comment(TEXT, [PREFIX])
 # --------------------------
 \(.\)], [
 $3\1])$4])
 
 
 # b4_comment(TEXT, [PREFIX])
 # --------------------------

-# Put TEXT in comment.  Avoid trailing spaces: don't indent empty lines.
-# Avoid adding indentation to the first line, as the indentation comes
-# from "/*".  That's why we don't patsubst([$1], [^\(.\)], [   \1]).
-#
-# Prefix all the output lines with PREFIX.
+# Put TEXT in comment.  Prefix all the output lines with PREFIX.

 m4_define([b4_comment],
 m4_define([b4_comment],

-[b4_comment_([$1], [$2/* ], [$2   ], [$2  */])])
+[b4_comment_([$1], [$2/* ], [$2   ], [  */])])

 
 
 # b4_identification
 
 
 # b4_identification


@@ -273,11 +270,9 @@ m4_define([b4_token_enum],
 # --------------
 # Output the definition of the tokens (if there are) as enums.
 m4_define([b4_token_enums],
 # --------------
 # Output the definition of the tokens (if there are) as enums.
 m4_define([b4_token_enums],

-[b4_any_token_visible_if([[/* Tokens.  */
+[b4_any_token_visible_if([[/* Token type.  */

 #ifndef ]b4_api_PREFIX[TOKENTYPE
 # define ]b4_api_PREFIX[TOKENTYPE
 #ifndef ]b4_api_PREFIX[TOKENTYPE
 # define ]b4_api_PREFIX[TOKENTYPE

-  /* Put the tokens into the symbol table, so that GDB and other debuggers
-     know about them.  */

   enum ]b4_api_prefix[tokentype
   {
     ]m4_join([,
   enum ]b4_api_prefix[tokentype
   {
     ]m4_join([,


@@ -506,44 +501,62 @@ b4_locations_if([, yylocationp])[]b4_user_args[);
 ## Declarations.  ##
 ## -------------- ##
 
 ## Declarations.  ##
 ## -------------- ##
 

-# b4_declare_yylstype
-# -------------------
-# Declarations that might either go into the header (if --defines) or
-# in the parser body.  Declare YYSTYPE/YYLTYPE, and yylval/yylloc.
-m4_define([b4_declare_yylstype],
-[[#if ! defined ]b4_api_PREFIX[STYPE && ! defined ]b4_api_PREFIX[STYPE_IS_DECLARED
+# b4_value_type_define
+# --------------------
+m4_define([b4_value_type_define],
+[[/* Value type.  */
+#if ! defined ]b4_api_PREFIX[STYPE && ! defined ]b4_api_PREFIX[STYPE_IS_DECLARED

 ]m4_ifdef([b4_stype],
 ]m4_ifdef([b4_stype],

-[[typedef union ]b4_union_name[
+[[typedef union ]b4_union_name[ ]b4_api_PREFIX[STYPE;
+union ]b4_union_name[

 {
 ]b4_user_stype[
 {
 ]b4_user_stype[

-} ]b4_api_PREFIX[STYPE;
+};

 # define ]b4_api_PREFIX[STYPE_IS_TRIVIAL 1]],
 [m4_if(b4_tag_seen_flag, 0,
 [[typedef int ]b4_api_PREFIX[STYPE;
 # define ]b4_api_PREFIX[STYPE_IS_TRIVIAL 1]])])[
 # define ]b4_api_PREFIX[STYPE_IS_DECLARED 1
 # define ]b4_api_PREFIX[STYPE_IS_TRIVIAL 1]],
 [m4_if(b4_tag_seen_flag, 0,
 [[typedef int ]b4_api_PREFIX[STYPE;
 # define ]b4_api_PREFIX[STYPE_IS_TRIVIAL 1]])])[
 # define ]b4_api_PREFIX[STYPE_IS_DECLARED 1

-#endif]b4_locations_if([[
+#endif
+]])

 
 

+
+# b4_location_type_define
+# -----------------------
+m4_define([b4_location_type_define],
+[[/* Location type.  */

 #if ! defined ]b4_api_PREFIX[LTYPE && ! defined ]b4_api_PREFIX[LTYPE_IS_DECLARED
 #if ! defined ]b4_api_PREFIX[LTYPE && ! defined ]b4_api_PREFIX[LTYPE_IS_DECLARED

-typedef struct ]b4_api_PREFIX[LTYPE
+typedef struct ]b4_api_PREFIX[LTYPE ]b4_api_PREFIX[LTYPE;
+struct ]b4_api_PREFIX[LTYPE

 {
   int first_line;
   int first_column;
   int last_line;
   int last_column;
 {
   int first_line;
   int first_column;
   int last_line;
   int last_column;

-} ]b4_api_PREFIX[LTYPE;
+};

 # define ]b4_api_PREFIX[LTYPE_IS_DECLARED 1
 # define ]b4_api_PREFIX[LTYPE_IS_TRIVIAL 1
 # define ]b4_api_PREFIX[LTYPE_IS_DECLARED 1
 # define ]b4_api_PREFIX[LTYPE_IS_TRIVIAL 1

-#endif]])
+#endif
+]])
+
+
+# b4_declare_yylstype
+# -------------------
+# Declarations that might either go into the header (if --defines) or
+# in the parser body.  Declare YYSTYPE/YYLTYPE, and yylval/yylloc.
+m4_define([b4_declare_yylstype],
+[b4_value_type_define[]b4_locations_if([
+b4_location_type_define])

 
 b4_pure_if([], [[extern ]b4_api_PREFIX[STYPE ]b4_prefix[lval;
 ]b4_locations_if([[extern ]b4_api_PREFIX[LTYPE ]b4_prefix[lloc;]])])[]dnl
 ])
 
 
 b4_pure_if([], [[extern ]b4_api_PREFIX[STYPE ]b4_prefix[lval;
 ]b4_locations_if([[extern ]b4_api_PREFIX[LTYPE ]b4_prefix[lloc;]])])[]dnl
 ])
 

+

 # b4_YYDEBUG_define
 # ------------------
 m4_define([b4_YYDEBUG_define],
 # b4_YYDEBUG_define
 # ------------------
 m4_define([b4_YYDEBUG_define],

-[[/* Enabling traces.  */
+[[/* Debug traces.  */

 ]m4_if(b4_api_prefix, [yy],
 [[#ifndef YYDEBUG
 # define YYDEBUG ]b4_parse_trace_if([1], [0])[
 ]m4_if(b4_api_prefix, [yy],
 [[#ifndef YYDEBUG
 # define YYDEBUG ]b4_parse_trace_if([1], [0])[