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2 7u83 1
/*
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    		 Crown Copyright (c) 1997
3
 
4
    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:-
12
 
13
        (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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16
        (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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20
        (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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/*
7 7u83 31
 *  AUTOMATICALLY GENERATED BY lexi VERSION 1.2
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 */
2 7u83 33
 
34
 
35
/* LOOKUP TABLE */
36
 
7 7u83 37
static unsigned char lookup_tab[257] = {
2 7u83 38
    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0000, 0x0001, 0x0001, 0x0000, 0x0000, 0x0001, 0x0000, 0x0000,
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    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0001, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x000c, 0x000c, 0x000c, 0x000c, 0x000c, 0x000c, 0x000c, 0x000c,
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    0x000c, 0x000c, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0000, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a,
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    0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a,
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    0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a,
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    0x000a, 0x000a, 0x000a, 0x0000, 0x0000, 0x0000, 0x0000, 0x000a,
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    0x0000, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a,
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    0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a,
52
    0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a,
53
    0x000a, 0x000a, 0x000a, 0x0000, 0x0000, 0x0000, 0x000a, 0x0000,
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    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
56
    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
67
    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0000
7 7u83 71
};
2 7u83 72
 
73
#ifndef LEX_EOF
7 7u83 74
#define LEX_EOF		256
2 7u83 75
#endif
76
 
7 7u83 77
#define lookup_char(C)	((int)lookup_tab[(C)])
78
#define is_white(T)	((T) & 0x0001)
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#define is_alpha(T)	((T) & 0x0002)
80
#define is_digit(T)	((T) & 0x0004)
81
#define is_alphanum(T)	((T) & 0x0008)
2 7u83 82
 
83
 
84
/* MAIN PASS ANALYSER */
85
 
7 7u83 86
int
87
read_token(void)
2 7u83 88
{
7 7u83 89
    start: {
90
	int c0 = read_char(), t0;
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	t0 = lookup_char(c0);
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	if (is_white(t0)) goto start;
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	switch (c0) {
94
	    case '#': {
95
		return(get_comment(c0));
2 7u83 96
	    }
7 7u83 97
	    case ',': {
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		return(lex_comma);
2 7u83 99
	    }
7 7u83 100
	    case '[': {
101
		return(lex_open);
2 7u83 102
	    }
7 7u83 103
	    case ']': {
104
		return(lex_close);
2 7u83 105
	    }
7 7u83 106
	    case LEX_EOF: {
107
		return(lex_eof);
2 7u83 108
	    }
109
	}
7 7u83 110
	if (is_alpha(t0)) {
111
	    return(get_identifier(c0));
112
	} else if (is_digit(t0)) {
113
	    return(get_number(c0));
2 7u83 114
	}
7 7u83 115
	return(unknown_token(c0));
2 7u83 116
    }
117
}