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2 7u83 1 
/*
2 
    		 Crown Copyright (c) 1997
6 7u83 3 
 
2 7u83 4 
    This TenDRA(r) Computer Program is subject to Copyright
5 
    owned by the United Kingdom Secretary of State for Defence
6 
    acting through the Defence Evaluation and Research Agency
7 
    (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:-
6 7u83 12 
 
2 7u83 13 
        (1) Its Recipients shall ensure that this Notice is
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        reproduced upon any copies or amended versions of it;
6 7u83 15 
 
2 7u83 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;
6 7u83 19 
 
2 7u83 20 
        (3) Its onward transfer from a recipient to another
21 
        party shall be deemed to be that party's acceptance of
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        these conditions;
6 7u83 23 
 
2 7u83 24 
        (4) DERA gives no warranty or assurance as to its
25 
        quality or suitability for any purpose and DERA accepts
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        no liability whatsoever in relation to any use to which
27 
        it may be put.
28 
*/
29 
 
30 
/*
6 7u83 31 
 *  AUTOMATICALLY GENERATED BY lexi VERSION 1.2
32 
 */
2 7u83 33 
 
34 
 
35 
/* LOOKUP TABLE */
36 
 
6 7u83 37 
static unsigned char lookup_tab[257] = {
2 7u83 38 
    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
39 
    0x0000, 0x0001, 0x0001, 0x0000, 0x0000, 0x0001, 0x0000, 0x0000,
40 
    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
42 
    0x0001, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
43 
    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
44 
    0x000c, 0x000c, 0x000c, 0x000c, 0x000c, 0x000c, 0x000c, 0x000c,
45 
    0x000c, 0x000c, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
46 
    0x0000, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a,
47 
    0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a,
48 
    0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a,
49 
    0x000a, 0x000a, 0x000a, 0x0000, 0x0000, 0x0000, 0x0000, 0x000a,
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    0x0000, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a,
51 
    0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a,
52 
    0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a,
53 
    0x000a, 0x000a, 0x000a, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
54 
    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
55 
    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,
61 
    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
62 
    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
64 
    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
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};
2 7u83 72 
 
73 
#ifndef LEX_EOF
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#define LEX_EOF		256
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#endif
76 
 
6 7u83 77 
#define lookup_char(C)	((int)lookup_tab[(C)])
78 
#define is_white(T)	((T) & 0x0001)
79 
#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 
 
6 7u83 86 
int
87 
read_token(void)
2 7u83 88 
{
6 7u83 89 
    start: {
90 
	int c0 = read_char(), t0;
91 
	t0 = lookup_char(c0);
92 
	if (is_white(t0)) goto start;
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	switch (c0) {
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	    case '"': {
95 
		return(get_string(c0));
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	    }
6 7u83 97 
	    case '(': {
98 
		return(lex_open_Hround);
2 7u83 99 
	    }
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	    case ')': {
101 
		return(lex_close_Hround);
2 7u83 102 
	    }
6 7u83 103 
	    case ',': {
104 
		return(lex_comma);
2 7u83 105 
	    }
6 7u83 106 
	    case '-': {
107 
		int c1 = read_char();
108 
		if (c1 == '>') {
109 
		    return(lex_arrow);
2 7u83 110 
		}
6 7u83 111 
		unread_char(c1);
112 
		break;
2 7u83 113 
	    }
6 7u83 114 
	    case '/': {
115 
		int c1 = read_char();
116 
		if (c1 == '*') {
117 
		    return(get_comment(c0, c1));
2 7u83 118 
		}
6 7u83 119 
		unread_char(c1);
120 
		break;
2 7u83 121 
	    }
6 7u83 122 
	    case ':': {
123 
		return(lex_colon);
2 7u83 124 
	    }
6 7u83 125 
	    case '=': {
126 
		return(lex_equal);
2 7u83 127 
	    }
6 7u83 128 
	    case '{': {
129 
		return(lex_open_Hbrace);
2 7u83 130 
	    }
6 7u83 131 
	    case '|': {
132 
		return(lex_or);
2 7u83 133 
	    }
6 7u83 134 
	    case '}': {
135 
		return(lex_close_Hbrace);
2 7u83 136 
	    }
6 7u83 137 
	    case LEX_EOF: {
138 
		return(lex_eof);
2 7u83 139 
	    }
140 
	}
6 7u83 141 
	if (is_alpha(t0)) {
142 
	    return(get_identifier(c0));
2 7u83 143 
	}
6 7u83 144 
	return(unknown_token(c0));
2 7u83 145 
    }
146 
}