# C M4 Macros for Bison.
-# Copyright (C) 2002, 2004-2012 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2004-2013 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
m4_eval([0 <= $1]), [1], [unsigned int],
- [int])])
+ [int])])
# b4_int_type_for(NAME)
[(!!(($2) == ($3)))])])
-## ---------##
-## Values. ##
-## ---------##
+## ----------------- ##
+## Compiler issues. ##
+## ----------------- ##
+
+# b4_attribute_define
+# -------------------
+# Provide portability for __attribute__.
+m4_define([b4_attribute_define],
+[#ifndef __attribute__
+/* This feature is available in gcc versions 2.5 and later. */
+# if (! defined __GNUC__ || __GNUC__ < 2 \
+ || (__GNUC__ == 2 && __GNUC_MINOR__ < 5))
+# define __attribute__(Spec) /* empty */
+# endif
+#endif
+
+/* Suppress unused-variable warnings by "using" E. */
+#if ! defined lint || defined __GNUC__
+# define YYUSE(E) ((void) (E))
+#else
+# define YYUSE(E) /* empty */
+#endif
+])
# b4_null_define
enum ]b4_api_prefix[tokentype {
]m4_map_sep([ b4_token_enum], [,
],
- [$@])[
+ [$@])[
};
#endif
]])])
m4_define([b4_c_ansi_formals],
[m4_if([$#], [0], [void],
[$#$1], [1], [void],
- [m4_map_sep([b4_c_ansi_formal], [, ], [$@])])])
+ [m4_map_sep([b4_c_ansi_formal], [, ], [$@])])])
m4_define([b4_c_ansi_formal],
[$1])
# Output the K&R argument declarations.
m4_define([b4_c_knr_formal_decls],
[m4_map_sep([b4_c_knr_formal_decl],
- [
+ [
],
- [$@])])
+ [$@])])
m4_define([b4_c_knr_formal_decl],
[ $1;])
## ------------------------------------------------------------ ##
+# b4_c_ansi_function_decl(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
+# ----------------------------------------------------------------
+# Declare the function NAME ANSI C style.
+m4_define([b4_c_ansi_function_decl],
+[$2 $1 (b4_c_ansi_formals(m4_shift2($@)));[]dnl
+])
+
+
+
# b4_c_function_decl(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
# -----------------------------------------------------------
-# Declare the function NAME.
+# Declare the function NAME in both K&R and ANSI C.
m4_define([b4_c_function_decl],
[#if defined __STDC__ || defined __cplusplus
b4_c_ansi_function_decl($@)
])
-# b4_c_ansi_function_decl(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
-# ----------------------------------------------------------------
-# Declare the function NAME.
-m4_define([b4_c_ansi_function_decl],
-[$2 $1 (b4_c_ansi_formals(m4_shift2($@)));[]dnl
-])
-
-
-
## --------------------- ##
## Calling C functions. ##
## ----------- ##
# b4_sync_start(LINE, FILE)
-# -----------------------
+# -------------------------
m4_define([b4_sync_start], [[#]line $1 $2])
$2
break;])
-# b4_symbol_actions(FILENAME, LINENO,
-# SYMBOL-TAG, SYMBOL-NUM,
-# SYMBOL-ACTION, SYMBOL-TYPENAME)
-# -------------------------------------------------
+# _b4_symbol_actions(FILENAME, LINENO,
+# SYMBOL-TAG, SYMBOL-NUM,
+# SYMBOL-ACTION, SYMBOL-TYPENAME)
+# --------------------------------------------------
# Issue the code for a symbol action (e.g., %printer).
#
# Define b4_dollar_dollar([TYPE-NAME]), and b4_at_dollar, which are
# invoked where $<TYPE-NAME>$ and @$ were specified by the user.
-m4_define([b4_symbol_actions],
+m4_define([_b4_symbol_actions],
[b4_dollar_pushdef([(*yyvaluep)], [$6], [(*yylocationp)])dnl
case $4: /* $3 */
b4_syncline([$2], [$1])
- $5;
+ $5;
b4_syncline([@oline@], [@ofile@])
- break;
+ break;
b4_dollar_popdef[]dnl
])
+# b4_symbol_actions(KIND)
+# -----------------------
+# Emit the symbol actions for KIND ("printers" or "destructors").
+# Dispatch on "yytype".
+m4_define([b4_symbol_actions],
+[m4_ifval(m4_defn([b4_symbol_$1]),
+[[switch (yytype)
+ {
+]m4_map([_b4_symbol_actions], m4_defn([b4_symbol_$1]))[
+ default:
+ break;
+ }]],
+[YYUSE (yytype);])])
+
# b4_yydestruct_generate(FUNCTION-DECLARATOR)
# -------------------------------------------
yymsg = "Deleting";
YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
- switch (yytype)
- {
-]m4_map([b4_symbol_actions], m4_defn([b4_symbol_destructors]))[
- default:
- break;
- }
+ ]b4_symbol_actions([destructors])[
}]dnl
])
/*ARGSUSED*/
]$1([yy_symbol_value_print],
[static void],
- [[FILE *yyoutput], [yyoutput]],
- [[int yytype], [yytype]],
- [[YYSTYPE const * const yyvaluep], [yyvaluep]][]dnl
+ [[FILE *yyoutput], [yyoutput]],
+ [[int yytype], [yytype]],
+ [[YYSTYPE const * const yyvaluep], [yyvaluep]][]dnl
b4_locations_if([, [[YYLTYPE const * const yylocationp], [yylocationp]]])[]dnl
m4_ifset([b4_parse_param], [, b4_parse_param]))[
{
# else
YYUSE (yyoutput);
# endif
- switch (yytype)
- {
-]m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl
-[ default:
- break;
- }
+ ]b4_symbol_actions([printers])[
}
]$1([yy_symbol_print],
[static void],
- [[FILE *yyoutput], [yyoutput]],
- [[int yytype], [yytype]],
- [[YYSTYPE const * const yyvaluep], [yyvaluep]][]dnl
+ [[FILE *yyoutput], [yyoutput]],
+ [[int yytype], [yytype]],
+ [[YYSTYPE const * const yyvaluep], [yyvaluep]][]dnl
b4_locations_if([, [[YYLTYPE const * const yylocationp], [yylocationp]]])[]dnl
m4_ifset([b4_parse_param], [, b4_parse_param]))[
{
while (YYID (0))
#endif
]])
+
+# b4_yy_location_print_define
+# ---------------------------
+# Define YY_LOCATION_PRINT.
+m4_define([b4_yy_location_print_define],
+[b4_locations_if([[
+/* YY_LOCATION_PRINT -- Print the location on the stream.
+ This macro was not mandated originally: define only if we know
+ we won't break user code: when these are the locations we know. */
+
+#ifndef YY_LOCATION_PRINT
+# if defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL
+
+/* Print *YYLOCP on YYO. Private, do not rely on its existence. */
+
+__attribute__((__unused__))
+]b4_c_function_def([yy_location_print_],
+ [static unsigned],
+ [[FILE *yyo], [yyo]],
+ [[YYLTYPE const * const yylocp], [yylocp]])[
+{
+ unsigned res = 0;
+ int end_col = 0 != yylocp->last_column ? yylocp->last_column - 1 : 0;
+ if (0 <= yylocp->first_line)
+ {
+ res += fprintf (yyo, "%d", yylocp->first_line);
+ if (0 <= yylocp->first_column)
+ res += fprintf (yyo, ".%d", yylocp->first_column);
+ }
+ if (0 <= yylocp->last_line)
+ {
+ if (yylocp->first_line < yylocp->last_line)
+ {
+ res += fprintf (yyo, "-%d", yylocp->last_line);
+ if (0 <= end_col)
+ res += fprintf (yyo, ".%d", end_col);
+ }
+ else if (0 <= end_col && yylocp->first_column < end_col)
+ res += fprintf (yyo, "-%d", end_col);
+ }
+ return res;
+ }
+
+# define YY_LOCATION_PRINT(File, Loc) \
+ yy_location_print_ (File, &(Loc))
+
+# else
+# define YY_LOCATION_PRINT(File, Loc) ((void) 0)
+# endif
+#endif]],
+[[/* This macro is provided for backward compatibility. */
+#ifndef YY_LOCATION_PRINT
+# define YY_LOCATION_PRINT(File, Loc) ((void) 0)
+#endif]])
+])
+
+# b4_yyloc_default
+# ----------------
+# Expand to a possible default value for yylloc.
+m4_define([b4_yyloc_default],
+[[
+# if defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL
+ = { ]m4_join([, ],
+ m4_defn([b4_location_initial_line]),
+ m4_defn([b4_location_initial_column]),
+ m4_defn([b4_location_initial_line]),
+ m4_defn([b4_location_initial_column]))[ }
+# endif
+]])
projects / bison.git / blobdiff