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m4_divert(-1) -*- Autoconf -*-
# C M4 Macros for Bison.
# Copyright (C) 2002, 2004, 2005 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
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301 USA
## ---------------- ##
## Identification. ##
## ---------------- ##
# b4_copyright(TITLE, YEARS)
# --------------------------
m4_define([b4_copyright],
[/* A Bison parser, made by GNU Bison b4_version. */
/* $1,
Copyright (C) $2 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
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */])
# b4_identification
# -----------------
m4_define([b4_identification],
[/* Identify Bison output. */
[#]define YYBISON 1
/* Bison version. */
[#]define YYBISON_VERSION "b4_version"
/* Skeleton name. */
[#]define YYSKELETON_NAME b4_skeleton
/* Pure parsers. */
[#]define YYPURE b4_pure
/* Using locations. */
[#]define YYLSP_NEEDED b4_locations_flag
])
## ---------------- ##
## Default values. ##
## ---------------- ##
m4_define_default([b4_epilogue], [])
## ------------------------ ##
## 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. ##
## ------------ ##
# b4_ints_in(INT1, INT2, LOW, HIGH)
# ---------------------------------
# Return 1 iff both INT1 and INT2 are in [LOW, HIGH], 0 otherwise.
m4_define([b4_ints_in],
[m4_eval([$3 <= $1 && $1 <= $4 && $3 <= $2 && $2 <= $4])])
# b4_int_type(MIN, MAX)
# ---------------------
# Return the smallest int type able to handle numbers ranging from
# MIN to MAX (included).
m4_define([b4_int_type],
[m4_if(b4_ints_in($@, [0], [255]), [1], [unsigned char],
b4_ints_in($@, [-128], [127]), [1], [signed char],
b4_ints_in($@, [0], [65535]), [1], [unsigned short int],
b4_ints_in($@, [-32768], [32767]), [1], [short int],
m4_eval([0 <= $1]), [1], [unsigned int],
[int])])
# b4_int_type_for(NAME)
# ---------------------
# Return the smallest int type able to handle numbers ranging from
# `NAME_min' to `NAME_max' (included).
m4_define([b4_int_type_for],
[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. ##
## ------------------------- ##
# b4_token_define(TOKEN-NAME, TOKEN-NUMBER)
# -----------------------------------------
# Output the definition of this token as #define.
m4_define([b4_token_define],
[#define $1 $2
])
# b4_token_defines(LIST-OF-PAIRS-TOKEN-NAME-TOKEN-NUMBER)
# -------------------------------------------------------
# Output the definition of the tokens (if there are) as #defines.
m4_define([b4_token_defines],
[m4_if([$@], [[]], [],
[/* Tokens. */
m4_map([b4_token_define], [$@])])
])
# b4_token_enum(TOKEN-NAME, TOKEN-NUMBER)
# ---------------------------------------
# Output the definition of this token as an enum.
m4_define([b4_token_enum],
[$1 = $2])
# b4_token_enums(LIST-OF-PAIRS-TOKEN-NAME-TOKEN-NUMBER)
# -----------------------------------------------------
# Output the definition of the tokens (if there are) as enums.
m4_define([b4_token_enums],
[m4_if([$@], [[]], [],
[/* Tokens. */
#ifndef YYTOKENTYPE
# define YYTOKENTYPE
/* Put the tokens into the symbol table, so that GDB and other debuggers
know about them. */
enum yytokentype {
m4_map_sep([ b4_token_enum], [,
],
[$@])
};
#endif
])])
# b4_token_enums_defines(LIST-OF-PAIRS-TOKEN-NAME-TOKEN-NUMBER)
# -------------------------------------------------------------
# Output the definition of the tokens (if there are) as enums and #defines.
m4_define([b4_token_enums_defines],
[b4_token_enums($@)b4_token_defines($@)
])
## --------------------------------------------- ##
## Defining C functions in both K&R and ANSI-C. ##
## --------------------------------------------- ##
# b4_c_function_def(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
# ----------------------------------------------------------
# Declare the function NAME.
m4_define([b4_c_function_def],
[#if defined (__STDC__) || defined (__cplusplus)
b4_c_ansi_function_def($@)
#else
$2
$1 (b4_c_knr_formal_names(m4_shiftn(2, $@)))
b4_c_knr_formal_decls(m4_shiftn(2, $@))
#endif[]dnl
])
# b4_c_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, $@)))[]dnl
])
# b4_c_ansi_formals([DECL1, NAME1], ...)
# --------------------------------------
# Output the arguments ANSI-C definition.
m4_define([b4_c_ansi_formals],
[m4_case([$@],
[], [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],
[$2])
# b4_c_knr_formal_decls([DECL1, NAME1], ...)
# ------------------------------------------
# Output the K&R argument declarations.
m4_define([b4_c_knr_formal_decls],
[m4_map_sep([b4_c_knr_formal_decl],
[
],
[$@])])
m4_define([b4_c_knr_formal_decl],
[ $1;])
## ------------------------------------------------------------ ##
## Declaring (prototyping) C functions in both K&R and ANSI-C. ##
## ------------------------------------------------------------ ##
# b4_c_function_decl(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
# -----------------------------------------------------------
# Declare the function NAME.
m4_define([b4_c_function_decl],
[#if defined (__STDC__) || defined (__cplusplus)
b4_c_ansi_function_decl($@)
#else
$2 $1 ();
#endif[]dnl
])
# 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
])
## --------------------- ##
## Calling C functions. ##
## --------------------- ##
# 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_arg],
[$2])
## ----------- ##
## Synclines. ##
## ----------- ##
# b4_syncline(LINE, FILE)
# -----------------------
m4_define([b4_syncline],
[m4_if(b4_synclines_flag, 1,
[[#]line $1 $2])])
# b4_symbol_actions(FILENAME, LINENO,
# SYMBOL-TAG, SYMBOL-NUM,
# SYMBOL-ACTION, SYMBOL-TYPENAME)
# -------------------------------------------------
m4_define([b4_symbol_actions],
[m4_pushdef([b4_dollar_dollar],
[m4_ifval([$6], [(yyvaluep->$6)], [(*yyvaluep)])])dnl
m4_pushdef([b4_at_dollar], [(*yylocationp)])dnl
case $4: /* $3 */
b4_syncline([$2], [$1])
$5;
b4_syncline([@oline@], [@ofile@])
break;
m4_popdef([b4_at_dollar])dnl
m4_popdef([b4_dollar_dollar])dnl
])
# b4_yydestruct_generate(FUNCTION-DECLARATOR)
# -------------------------------------------
# Generate the "yydestruct" function, which declaration is issued using
# FUNCTION-DECLARATOR, which may be "b4_c_ansi_function_def" for ISO C
# or "b4_c_function_def" for K&R.
m4_define_default([b4_yydestruct_generate],
[[/*-----------------------------------------------.
| Release the memory associated to this symbol. |
`-----------------------------------------------*/
]$1([yydestruct],
[static void],
[[const char *yymsg], [yymsg]],
[[int yytype], [yytype]],
[[YYSTYPE *yyvaluep], [yyvaluep]]b4_location_if([,
[[YYLTYPE *yylocationp], [yylocationp]]]))[
{
/* Pacify ``unused variable'' warnings. */
(void) yyvaluep;
]b4_location_if([ (void) yylocationp;
])[
if (!yymsg)
yymsg = "Deleting";
YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
switch (yytype)
{
]m4_map([b4_symbol_actions], m4_defn([b4_symbol_destructors]))[
default:
break;
}
}]dnl
])
# b4_yysymprint_generate(FUNCTION-DECLARATOR)
# -------------------------------------------
# Generate the "yysymprint" function, which declaration is issued using
# FUNCTION-DECLARATOR, which may be "b4_c_ansi_function_def" for ISO C
# or "b4_c_function_def" for K&R.
m4_define_default([b4_yysymprint_generate],
[[/*--------------------------------.
| Print this symbol on YYOUTPUT. |
`--------------------------------*/
]$1([yysymprint],
[static void],
[[FILE *yyoutput], [yyoutput]],
[[int yytype], [yytype]],
[[YYSTYPE *yyvaluep], [yyvaluep]]b4_location_if([,
[[YYLTYPE *yylocationp], [yylocationp]]]))
{
/* Pacify ``unused variable'' warnings. */
(void) yyvaluep;
b4_location_if([ (void) yylocationp;
])dnl
[
if (yytype < YYNTOKENS)
YYFPRINTF (yyoutput, "token %s (", yytname[yytype]);
else
YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]);
]b4_location_if([ YY_LOCATION_PRINT (yyoutput, *yylocationp);
YYFPRINTF (yyoutput, ": ");
])dnl
[
# ifdef YYPRINT
if (yytype < YYNTOKENS)
YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep);
# endif
switch (yytype)
{
]m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl
[ default:
break;
}
YYFPRINTF (yyoutput, ")");
}
]])