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119 lines
3.7 KiB
C
119 lines
3.7 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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/* As a special exception, when this file is copied by Bison into a
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Bison output file, you may use that output file without restriction.
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This special exception was added by the Free Software Foundation
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in version 1.24 of Bison. */])
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## ------------ ##
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## Data Types. ##
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## ------------ ##
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# b4_sint_type(MAX)
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# -----------------
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# Return the smallest signed int type able to handle the number MAX.
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m4_define([b4_sint_type],
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[m4_if(m4_eval([$1 <= 127]), [1], [signed char],
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m4_eval([$1 <= 32767]), [1], [signed short],
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[signed int])])
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# b4_uint_type(MAX)
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# -----------------
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# Return the smallest unsigned int type able to handle the number MAX.
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m4_define([b4_uint_type],
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[m4_if(m4_eval([$1 <= 255]), [1], [unsigned char],
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m4_eval([$1 <= 65535]), [1], [unsigned short],
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[unsigned int])])
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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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#ifndef YYTOKENTYPE
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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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[$@])
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};
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# endif
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/* POSIX requires `int' for tokens in interfaces. */
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# define YYTOKENTYPE int
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#endif /* !YYTOKENTYPE */
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m4_map([b4_token_define], [$@])
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])
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])
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