/*
 * Copyright (c) 2004, The Tendra Project <http://www.ten15.org/>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice unmodified, this list of conditions, and the following
 *    disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *
 *  		 Crown Copyright (c) 1997
 *
 *  This TenDRA(r) Computer Program is subject to Copyright
 *  owned by the United Kingdom Secretary of State for Defence
 *  acting through the Defence Evaluation and Research Agency
 *  (DERA).  It is made available to Recipients with a
 *  royalty-free licence for its use, reproduction, transfer
 *  to other parties and amendment for any purpose not excluding
 *  product development provided that any such use et cetera
 *  shall be deemed to be acceptance of the following conditions:-
 *
 *      (1) Its Recipients shall ensure that this Notice is
 *      reproduced upon any copies or amended versions of it;
 *
 *      (2) Any amended version of it shall be clearly marked to
 *      show both the nature of and the organisation responsible
 *      for the relevant amendment or amendments;
 *
 *      (3) Its onward transfer from a recipient to another
 *      party shall be deemed to be that party's acceptance of
 *      these conditions;
 *
 *      (4) DERA gives no warranty or assurance as to its
 *      quality or suitability for any purpose and DERA accepts
 *      no liability whatsoever in relation to any use to which
 *      it may be put.
 *
 * $TenDRA: tendra/src/tools/tspec/lexer.lxi,v 1.4 2004/03/08 14:48:14 bp Exp $
 */


/*
 *    LEXICAL ANALYSER FOR TSPEC
 *
 *    This file describes the lexical analyser used by tspec.
 */

/* Character groups */
GROUP white = " \t\n\r";
GROUP alpha = {A-Z} + {a-z} + "_";
GROUP digit = {0-9};
GROUP alphanum = "[alpha][digit]";

/* Simple symbols */
TOKEN "!" -> $exclaim;
TOKEN "(" -> $open-round;
TOKEN ")" -> $close-round;
TOKEN "*" -> $star;
TOKEN "," -> $comma;
TOKEN "-" -> $minus;
TOKEN "." -> $dot;
TOKEN ".." -> $dot-dot;
TOKEN "..." -> $ellipsis;
TOKEN ":" -> $colon;
TOKEN ":=" -> $assign;
TOKEN ";" -> $semicolon;
TOKEN "=" -> $equal;
TOKEN "?" -> $question;
TOKEN "\e" -> $eof;
TOKEN "\[" -> $open-square;
TOKEN "]" -> $close-square;
TOKEN "{" -> $open-brace;
TOKEN "}" -> $close-brace;
TOKEN "|" -> $or;

/* Comments, strings and identifiers */
TOKEN "#" -> get_comment ();
TOKEN "/*" -> get_c_comment ();
TOKEN "%%" -> get_text ();
TOKEN "\"" -> get_string ();
TOKEN "[alpha]" -> get_global ();
TOKEN "~[alpha]" -> get_local ();
TOKEN "+[alpha]" -> get_command ();
TOKEN "$[alpha]" -> get_variable ();
TOKEN "[digit]" -> get_number ();

/* Keywords */
KEYWORD "arith" -> $arith;
KEYWORD "char" -> $char;
KEYWORD "const" -> $const;
KEYWORD "double" -> $double;
KEYWORD "enum" -> $enum;
KEYWORD "extern" -> $extern;
KEYWORD "float" -> $float;
KEYWORD "int" -> $int;
KEYWORD "long" -> $long;
KEYWORD "lvalue" -> $lvalue;
KEYWORD "restrict" -> $restrict;
KEYWORD "scalar" -> $scalar;
KEYWORD "short" -> $short;
KEYWORD "signed" -> $signed;
KEYWORD "struct" -> $struct;
KEYWORD "union" -> $union;
KEYWORD "unsigned" -> $unsigned;
KEYWORD "void" -> $void;
KEYWORD "volatile" -> $volatile;
KEYWORD "weak" -> $weak;
KEYWORD "+BASE_API" -> $base-api;
KEYWORD "+CONST" -> $constant;
KEYWORD "+DEFINE" -> $define;
KEYWORD "+ELSE" -> $else;
KEYWORD "+ENDIF" -> $endif;
KEYWORD "+ENUM" -> $enumerate;
KEYWORD "+EXP" -> $exp;
KEYWORD "+FIELD" -> $field;
KEYWORD "+FUNC" -> $func;
KEYWORD "+IF" -> $if;
KEYWORD "+IFDEF" -> $ifdef;
KEYWORD "+IFNDEF" -> $ifndef;
KEYWORD "+IMPLEMENT" -> $implement;
KEYWORD "+INFO" -> $info;
KEYWORD "+MACRO" -> $macro;
KEYWORD "+NAT" -> $nat;
KEYWORD "+SET" -> $set;
KEYWORD "+STATEMENT" -> $statement;
KEYWORD "+SUBSET" -> $subset;
KEYWORD "+TOKEN" -> $token;
KEYWORD "+TYPE" -> $type;
KEYWORD "+TYPEDEF" -> $typedef;
KEYWORD "+USE" -> $use;
KEYWORD "~building_libs" -> $building;
KEYWORD "~promote" -> $promote;
KEYWORD "~protect" -> $protect;
KEYWORD "~special" -> $special;