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/*
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Crown Copyright (c) 1997
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This TenDRA(r) Computer Program is subject to Copyright
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owned by the United Kingdom Secretary of State for Defence
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acting through the Defence Evaluation and Research Agency
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(DERA). It is made available to Recipients with a
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royalty-free licence for its use, reproduction, transfer
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to other parties and amendment for any purpose not excluding
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product development provided that any such use et cetera
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shall be deemed to be acceptance of the following conditions:-
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(1) Its Recipients shall ensure that this Notice is
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reproduced upon any copies or amended versions of it;
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(2) Any amended version of it shall be clearly marked to
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show both the nature of and the organisation responsible
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for the relevant amendment or amendments;
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(3) Its onward transfer from a recipient to another
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party shall be deemed to be that party's acceptance of
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these conditions;
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(4) DERA gives no warranty or assurance as to its
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quality or suitability for any purpose and DERA accepts
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no liability whatsoever in relation to any use to which
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it may be put.
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*/
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/*
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LEXICAL ANALYSER FOR CALCULUS
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This file describes the lexical analyser used by calculus.
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*/
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/* Character groups */
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GROUP white = " \t\n\r" ;
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GROUP alpha = {A-Z} + {a-z} + "_" ;
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GROUP digit = {0-9} ;
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GROUP alphanum = "[alpha][digit]" ;
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GROUP hexdigit = "[digit]ABCDEFabcdef" ;
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/* Simple symbols */
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TOKEN "!" -> $exclaim ;
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TOKEN "#" -> $hash ;
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TOKEN "%" -> $rem ;
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TOKEN "?" -> $question ;
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TOKEN "&" -> $and ;
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TOKEN "*" -> $star ;
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TOKEN "+" -> $plus ;
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TOKEN "," -> $comma ;
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TOKEN "-" -> $minus ;
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TOKEN "->" -> $arrow ;
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TOKEN "." -> $dot ;
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TOKEN "/" -> $div ;
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TOKEN ":" -> $colon ;
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TOKEN "::" -> $colon-colon ;
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TOKEN ";" -> $semicolon ;
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TOKEN "<<" -> $lshift ;
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TOKEN "=" -> $equal ;
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TOKEN ">>" -> $rshift ;
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TOKEN "^" -> $xor ;
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TOKEN "|" -> $or ;
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TOKEN "~" -> $compl ;
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TOKEN "(" -> $open-round ;
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TOKEN ")" -> $close-round ;
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TOKEN "\[" -> $open-square ;
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TOKEN "]" -> $close-square ;
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TOKEN "{" -> $open-brace ;
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TOKEN "}" -> $close-brace ;
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TOKEN "\e" -> $eof ;
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/* Comments, strings, identifies and numbers */
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TOKEN "/*" -> get_comment () ;
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TOKEN "\"" -> get_string () ;
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TOKEN "[alpha]" -> get_identifier () ;
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TOKEN "[digit]" -> get_number () ;
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TOKEN "0x[hexdigit]" -> get_hex () ;
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TOKEN "0X[hexdigit]" -> get_hex () ;
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/* Keywords */
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KEYWORD "ALGEBRA" -> $algebra ;
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KEYWORD "LIST" -> $list ;
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KEYWORD "PTR" -> $ptr ;
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KEYWORD "STACK" -> get_stack () ;
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KEYWORD "VEC" -> get_vec () ;
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KEYWORD "VEC_PTR" -> get_vec_ptr () ;
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IF ( new_format ) {
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/* New style keywords */
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KEYWORD "enum" -> $enum ;
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KEYWORD "struct" -> $struct ;
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KEYWORD "union" -> $union ;
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KEYWORD "IMPORT" -> $import ;
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} ELSE {
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/* Old style keywords */
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KEYWORD "EXTRAS" -> $extras ;
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KEYWORD "IDENTITIES" -> $identities ;
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KEYWORD "MAPS" -> $maps ;
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KEYWORD "PRIMITIVES" -> $primitives ;
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KEYWORD "STRUCTURES" -> $structures ;
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KEYWORD "UNIONS" -> $unions ;
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KEYWORD "WITH" -> $with ;
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}
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