* data/c.m4 (b4_identification, b4_user_args, b4_parse_param):

[bison.git] / data / c.m4

diff --git a/data/c.m4 b/data/c.m4
index b89ea344f1744bacf34e6304a155e0c953a77949..261716225f07a203a07f9de89910ad0625dea487 100644 (file)
--- a/data/c.m4
+++ b/data/c.m4
@@ -1,4 +1,4 @@
-m4_divert(-1)                                                *- Autoconf -*-
+m4_divert(-1)                                               -*- Autoconf -*-

 
 # C M4 Macros for Bison.
 # Copyright (C) 2002 Free Software Foundation, Inc.
 
 # C M4 Macros for Bison.
 # Copyright (C) 2002 Free Software Foundation, Inc.


@@ -19,9 +19,9 @@ m4_divert(-1)                                                *- Autoconf -*-
 # 02111-1307  USA
 
 
 # 02111-1307  USA
 
 

-## ----------- ##
-## Copuright.  ##
-## ----------- ##
+## ---------------- ##
+## Identification.  ##
+## ---------------- ##

 
 # b4_copyright(TITLE, YEARS)
 # --------------------------
 
 # b4_copyright(TITLE, YEARS)
 # --------------------------


@@ -47,6 +47,45 @@ m4_define([b4_copyright],
    Boston, MA 02111-1307, USA.  */])
 
 
    Boston, MA 02111-1307, USA.  */])
 
 

+# b4_identification
+# -----------------
+m4_define([b4_identification],
+[/* Identify Bison output.  */
+[#]define YYBISON 1
+
+/* Skeleton name.  */
+[#]define YYSKELETON_NAME "b4_skeleton"
+
+/* Pure parsers.  */
+[#]define YYPURE b4_pure
+
+/* Using locations.  */
+[#]define YYLSP_NEEDED b4_locations_flag
+])
+
+
+
+## ------------------------ ##
+## Pure/impure interfaces.  ##
+## ------------------------ ##
+
+
+# b4_user_args
+# ------------
+m4_define([b4_user_args],
+[m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])])
+
+
+# b4_parse_param
+# --------------
+# If defined, b4_parse_param arrives double quoted, but below we prefer
+# it to be single quoted.
+m4_define_default([b4_parse_param])
+m4_define([b4_parse_param],
+b4_parse_param))
+
+
+

 ## ------------ ##
 ## Data Types.  ##
 ## ------------ ##
 ## ------------ ##
 ## Data Types.  ##
 ## ------------ ##


@@ -65,7 +104,7 @@ m4_define([b4_ints_in],
 # MIN to MAX (included).
 m4_define([b4_int_type],
 [m4_if(b4_ints_in($@,      [0],   [255]), [1], [unsigned char],
 # MIN to MAX (included).
 m4_define([b4_int_type],
 [m4_if(b4_ints_in($@,      [0],   [255]), [1], [unsigned char],

-       b4_ints_in($@,   [-128],   [127]), [1], [yysigned_char],
+       b4_ints_in($@,   [-128],   [127]), [1], [signed char],

 
        b4_ints_in($@,      [0], [65535]), [1], [unsigned short],
        b4_ints_in($@, [-32768], [32767]), [1], [short],
 
        b4_ints_in($@,      [0], [65535]), [1], [unsigned short],
        b4_ints_in($@, [-32768], [32767]), [1], [short],


@@ -74,6 +113,7 @@ m4_define([b4_int_type],
 
                                               [int])])
 
 
                                               [int])])
 

+

 # b4_int_type_for(NAME)
 # ---------------------
 # Return the smallest int type able to handle numbers ranging from
 # b4_int_type_for(NAME)
 # ---------------------
 # Return the smallest int type able to handle numbers ranging from


@@ -82,6 +122,30 @@ m4_define([b4_int_type_for],
 [b4_int_type($1_min, $1_max)])
 
 
 [b4_int_type($1_min, $1_max)])
 
 

+## ------------------ ##
+## Decoding options.  ##
+## ------------------ ##
+
+
+# b4_location_if(IF-TRUE, IF-FALSE)
+# ---------------------------------
+# Expand IF-TRUE, if locations are used, IF-FALSE otherwise.
+m4_define([b4_location_if],
+[m4_if(b4_locations_flag, [1],
+       [$1],
+       [$2])])
+
+
+# b4_pure_if(IF-TRUE, IF-FALSE)
+# -----------------------------
+# Expand IF-TRUE, if %pure-parser, IF-FALSE otherwise.
+m4_define([b4_pure_if],
+[m4_if(b4_pure, [1],
+       [$1],
+       [$2])])
+
+
+

 ## ------------------------- ##
 ## Assigning token numbers.  ##
 ## ------------------------- ##
 ## ------------------------- ##
 ## Assigning token numbers.  ##
 ## ------------------------- ##


@@ -122,76 +186,117 @@ m4_map([b4_token_define], [$@])
 ])
 
 
 ])
 
 

-## --------------------- ##
-## Calling C functions.  ##
-## --------------------- ##

 
 

+## --------------------------------------------- ##
+## Defining C functions in both K&R and ANSI-C.  ##
+## --------------------------------------------- ##

 
 

-# b4_c_function_call(NAME, RETURN-VALUE, [TYPE1, NAME1], ...)
-# -----------------------------------------------------------
-# Call the function NAME with arguments NAME1, NAME2 etc.
-m4_define([b4_c_function_call],
-[$1 (b4_c_args(m4_shiftn(2, $@)))[]dnl
+
+# b4_c_function_def(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
+# ----------------------------------------------------------
+# Declare the function NAME.
+m4_define([b4_c_function_def],
+[#if defined (__STDC__) || defined (__cplusplus)
+b4_c_ansi_function_def($@)
+#else
+$2
+$1 (b4_c_knr_formal_names(m4_shiftn(2, $@)))
+b4_c_knr_formal_decls(m4_shiftn(2, $@))
+#endif[]dnl

 ])
 
 
 ])
 
 

-# b4_c_args([TYPE1, NAME1], ...)
-# ------------------------------
-# Output the arguments NAME1, NAME2...
-m4_define([b4_c_args],
-[m4_map_sep([b4_c_arg], [, ], [$@])])
+# b4_c_ansi_function_def(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
+# ---------------------------------------------------------------
+# Declare the function NAME in ANSI.
+m4_define([b4_c_ansi_function_def],
+[$2
+$1 (b4_c_ansi_formals(m4_shiftn(2, $@)))[]dnl
+])

 
 

-m4_define([b4_c_arg],
+
+# b4_c_ansi_formals([DECL1, NAME1], ...)
+# --------------------------------------
+# Output the arguments ANSI-C definition.
+m4_define([b4_c_ansi_formals],
+[m4_case([$@],
+         [],   [void],
+         [[]], [void],
+               [m4_map_sep([b4_c_ansi_formal], [, ], [$@])])])
+
+m4_define([b4_c_ansi_formal],
+[$1])
+
+
+# b4_c_knr_formal_names([DECL1, NAME1], ...)
+# ------------------------------------------
+# Output the argument names.
+m4_define([b4_c_knr_formal_names],
+[m4_map_sep([b4_c_knr_formal_name], [, ], [$@])])
+
+m4_define([b4_c_knr_formal_name],

 [$2])
 
 
 [$2])
 
 

-## ---------------------------------------------- ##
-## Declaring C functions in both K&R and ANSI-C.  ##
-## ---------------------------------------------- ##
+# b4_c_knr_formal_decls([DECL1, NAME1], ...)
+# ------------------------------------------
+# Output the K&R argument declarations.
+m4_define([b4_c_knr_formal_decls],
+[m4_map_sep([b4_c_knr_formal_decl],
+            [
+],
+            [$@])])
+
+m4_define([b4_c_knr_formal_decl],
+[    $1;])

 
 
 
 

-# b4_c_function(NAME, RETURN-VALUE, [TYPE1, NAME1], ...)
-# ------------------------------------------------------
+
+## ------------------------------------------------------------ ##
+## Declaring (prototyping) C functions in both K&R and ANSI-C.  ##
+## ------------------------------------------------------------ ##
+
+
+# b4_c_function_decl(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
+# -----------------------------------------------------------

 # Declare the function NAME.
 # Declare the function NAME.

-m4_define([b4_c_function],
-[$2
-#if defined (__STDC__) || defined (__cplusplus)
-$1 (b4_c_ansi_args(m4_shiftn(2, $@)))
+m4_define([b4_c_function_decl],
+[#if defined (__STDC__) || defined (__cplusplus)
+b4_c_ansi_function_decl($@)

 #else
 #else

-$1 (b4_c_knr_arg_names(m4_shiftn(2, $@)))
-b4_c_knr_arg_decls(m4_shiftn(2, $@))
+$2 $1 ();

 #endif[]dnl
 ])
 
 
 #endif[]dnl
 ])
 
 

-# b4_c_ansi_args([TYPE1, NAME1], ...)
-# -----------------------------------
-# Output the arguments ANSI-C definition.
-m4_define([b4_c_ansi_args],
-[m4_map_sep([b4_c_ansi_arg], [, ], [$@])])
+# b4_c_ansi_function_decl(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
+# ----------------------------------------------------------------
+# Declare the function NAME.
+m4_define([b4_c_ansi_function_decl],
+[$2 $1 (b4_c_ansi_formals(m4_shiftn(2, $@)));[]dnl
+])

 
 

-m4_define([b4_c_ansi_arg],
-[$1 $2])

 
 
 
 

-# b4_c_knr_args([TYPE1, NAME1], ...)
-# ----------------------------------
-# Output the argument names.
-m4_define([b4_c_knr_arg_names],
-[m4_map_sep([b4_c_knr_arg_name], [, ], [$@])])

 
 

-m4_define([b4_c_knr_arg_name],
-[$2])
+## --------------------- ##
+## Calling C functions.  ##
+## --------------------- ##

 
 
 
 

-# b4_c_knr_args([TYPE1, NAME1], ...)
-# ----------------------------------
-# Output the K&R argument declarations.
-m4_define([b4_c_knr_arg_decls],
-[m4_map_sep([b4_c_knr_arg_decl],
-            [
-],
-            [$@])])
+# b4_c_function_call(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
+# -----------------------------------------------------------
+# Call the function NAME with arguments NAME1, NAME2 etc.
+m4_define([b4_c_function_call],
+[$1 (b4_c_args(m4_shiftn(2, $@)))[]dnl
+])
+
+
+# b4_c_args([DECL1, NAME1], ...)
+# ------------------------------
+# Output the arguments NAME1, NAME2...
+m4_define([b4_c_args],
+[m4_map_sep([b4_c_arg], [, ], [$@])])

 
 

-m4_define([b4_c_knr_arg_decl],
-[    $1 $2;])
+m4_define([b4_c_arg],
+[$2])