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https://git.savannah.gnu.org/git/bison.git
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174 lines
5.0 KiB
C
174 lines
5.0 KiB
C
m4_divert(-1) -*- C -*-
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# C M4 Macros for Bison.
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# Copyright (C) 2002 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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# 02111-1307 USA
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## ----------- ##
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## Copuright. ##
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## ----------- ##
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# b4_copyright(TITLE, YEARS)
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# --------------------------
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m4_define([b4_copyright],
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[/* A Bison parser, made from b4_filename, by GNU bison b4_version. */
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/* $1,
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Copyright (C) $2 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */])
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## ------------ ##
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## Data Types. ##
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## ------------ ##
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# b4_ints_in(INT1, INT2, LOW, HIGH)
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# ---------------------------------
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# Return 1 iff both INT1 and INT2 are in [LOW, HIGH], 0 otherwise.
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m4_define([b4_ints_in],
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[m4_eval([$3 <= $1 && $1 <= $4 && $3 <= $2 && $2 <= $4])])
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# b4_int_type(MIN, MAX)
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# ---------------------
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# Return the smallest int type able to handle numbers ranging from
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# MIN to MAX (included).
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m4_define([b4_int_type],
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[m4_if(b4_ints_in($@, [0], [255]), [1], [unsigned char],
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b4_ints_in($@, [-128], [128]), [1], [signed char],
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b4_ints_in($@, [0], [65535]), [1], [unsigned short],
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b4_ints_in($@, [-32768], [32767]), [1], [short],
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m4_eval([0 <= $1]), [1], [unsigned int],
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[int])])
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# b4_int_type_for(NAME)
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# ---------------------
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# Return the smallest int type able to handle numbers ranging from
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# `NAME_min' to `NAME_max' (included).
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m4_define([b4_int_type_for],
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[b4_int_type($1_min, $1_max)])
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## ------------------------- ##
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## Assigning token numbers. ##
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## ------------------------- ##
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# b4_token_define(TOKEN-NAME, TOKEN-NUMBER)
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# -----------------------------------------
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# Output the definition of this token as #define.
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m4_define([b4_token_define],
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[#define $1 $2
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])
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# b4_token_enum(TOKEN-NAME, TOKEN-NUMBER)
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# ---------------------------------------
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# Output the definition of this token as an enum.
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m4_define([b4_token_enum],
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[$1 = $2])
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# b4_token_defines(LIST-OF-PAIRS-TOKEN-NAME-TOKEN-NUMBER)
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# -------------------------------------------------------
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# Output the definition of the tokens (if there are) as enums and #define.
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m4_define([b4_token_defines],
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[m4_if([$@], [[]], [],
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[/* Tokens. */
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#if defined (__STDC__) || defined (__cplusplus)
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/* Put the tokens into the symbol table, so that GDB and other debuggers
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know about them. */
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enum yytokentype {
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m4_map_sep([ b4_token_enum], [,
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],
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[$@])
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};
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#endif
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m4_map([b4_token_define], [$@])
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])
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])
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## ---------------------------------------------- ##
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## Declaring C functions in both K&R and ANSI-C. ##
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## ---------------------------------------------- ##
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# b4_c_function(NAME, RETURN-VALUE, [TYPE1, NAME1], ...)
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# ------------------------------------------------
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# Declare the function NAME.
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m4_define([b4_c_function],
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[$2
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#if defined (__STDC__) || defined (__cplusplus)
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$1 (b4_c_ansi_args(m4_shiftn(2, $@)))
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#else
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$1 (b4_c_knr_arg_names(m4_shiftn(2, $@)))
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b4_c_knr_arg_decls(m4_shiftn(2, $@))
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#endif[]dnl
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])
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# b4_c_ansi_args([TYPE1, NAME1], ...)
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# -----------------------------------
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# Output the arguments ANSI-C definition.
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m4_define([b4_c_ansi_args],
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[m4_map_sep([b4_c_ansi_arg], [, ], [$@])])
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m4_define([b4_c_ansi_arg],
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[$1 $2])
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# b4_c_knr_args([TYPE1, NAME1], ...)
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# ----------------------------------
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# Output the argument names.
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m4_define([b4_c_knr_arg_names],
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[m4_map_sep([b4_c_knr_arg_name], [, ], [$@])])
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m4_define([b4_c_knr_arg_name],
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[$2])
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# b4_c_knr_args([TYPE1, NAME1], ...)
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# ----------------------------------
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# Output the K&R argument declarations.
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m4_define([b4_c_knr_arg_decls],
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[m4_map_sep([b4_c_knr_arg_decl],
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[
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],
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[$@])])
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m4_define([b4_c_knr_arg_decl],
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[ $1 $2;])
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