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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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#ifndef CHAR_INCLUDED
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#define CHAR_INCLUDED
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/*
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TYPE REPRESENTING A CHARACTER
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A character consists of a single letter (which may have associated
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data) plus pointers to the next character and to a list of alternative
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characters.
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*/
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typedef unsigned int letter ;
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typedef struct character_tag {
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letter ch ;
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char *defn ;
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char *args ;
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char *cond ;
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struct character_tag *opt ;
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struct character_tag *next ;
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} character ;
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/*
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TYPE REPRESENTING A CHARACTER GROUP
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A character group is a named array of letters.
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*/
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typedef struct {
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char *name ;
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letter *defn ;
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} char_group ;
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/*
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TYPE REPRESENTING A KEYWORD
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A keyword consists of a name plus some associated data. All keywords
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are formed into a list using the next field. done is a flag used in
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the output routines.
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*/
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typedef struct keyword_tag {
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char *name ;
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char *defn ;
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char *args ;
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char *cond ;
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int done ;
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struct keyword_tag *next ;
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} keyword ;
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/*
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PARAMETERS
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*/
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#define MAX_GROUPS 15
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/*
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SPECIAL LETTERS
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*/
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#define SIMPLE_LETTER ( ( letter ) 0x0100 )
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#define EOF_LETTER ( ( letter ) 0x0100 )
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#define LAST_LETTER ( ( letter ) 0x0101 )
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#define WHITE_LETTER ( ( letter ) 0x0102 )
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#define GROUP_LETTER ( ( letter ) 0x0103 )
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/*
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DECLARATIONS FOR CHARACTER ROUTINES
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*/
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extern letter *white_space ;
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extern character *pre_pass ;
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extern character *main_pass ;
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extern char_group groups [] ;
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extern int no_groups ;
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extern keyword *keywords ;
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extern void add_char PROTO_S ( ( character *, letter *, char ** ) ) ;
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extern void make_group PROTO_S ( ( char *, letter * ) ) ;
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extern int in_group PROTO_S ( ( letter *, letter ) ) ;
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extern letter *make_string PROTO_S ( ( char * ) ) ;
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extern letter find_escape PROTO_S ( ( int ) ) ;
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extern void add_keyword PROTO_S ( ( char *, char ** ) ) ;
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#endif
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