1 /*        $NetBSD: fgen.h,v 1.9 2010/02/08 20:14:55 eeh Exp $         */
2 /*
3  * fgen.h -- stuff for the fcode tokenizer.
4  *
5  * Copyright (c) 1998 Eduardo Horvath.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  */
28 
29 /* Type of a Cell */
30 typedef int64_t Cell;
31 
32 /* Token from the scanner. */
33 struct tok {
34           int type;
35           char *text;
36 };
37 
38 #define TOKEN struct tok
39 #define YY_DECL TOKEN* yylex(void)
40 
41 #define FCODE       0x000FC0DE
42 #define MACRO       0x0000F00D
43 
44 /* Defined fcode and string. */
45 struct fcode {
46           const char *name;
47           long num;
48           int type;
49           struct fcode *l;
50           struct fcode *r;
51 };
52 
53 /* macro instruction as separate words */
54 struct macro {
55           const char *name;
56           const char *equiv;
57           int type;
58           struct macro *l;
59           struct macro *r;
60 };
61 
62 /*
63  * FCode header -- assumes big-endian machine,
64  *        otherwise the bits need twiddling.
65  */
66 struct fcode_header {
67           char      header;
68           char      format;
69           short     checksum;
70           int       length;
71 };
72 
73 /* Tokenizer tokens */
74 enum toktypes {
75           TOK_OCTAL = 8,
76           TOK_DECIMAL = 10,
77           TOK_HEX = 16,
78 
79           TOK_NUMBER,
80           TOK_STRING_LIT,
81           TOK_C_LIT,
82           TOK_PSTRING,
83           TOK_TOKENIZE,
84           TOK_COMMENT,
85           TOK_COLON,
86           TOK_SEMICOLON,
87           TOK_TOSTRING,
88 
89           /* These are special */
90           TOK_ABORT_S,
91           TOK_AGAIN,
92           TOK_ALIAS,
93           TOK_GETTOKEN,
94           TOK_ASCII,
95           TOK_BEGIN,
96           TOK_BUFFER,
97           TOK_CASE,
98           TOK_CONSTANT,
99           TOK_CONTROL,
100           TOK_CREATE,
101           TOK_DEFER,
102           TOK_DO,
103           TOK_ELSE,
104           TOK_END0,
105           TOK_ENDCASE,
106           TOK_ENDOF,
107           TOK_EXTERNAL,
108           TOK_FCODE_VERSION2,
109           TOK_FCODE_END,
110           TOK_FIELD,
111           TOK_HEADERLESS,
112           TOK_HEADERS,
113           TOK_IF,
114           TOK_LEAVE,
115           TOK_LOOP,
116           TOK_OF,
117           TOK_OFFSET16,
118           TOK_REPEAT,
119           TOK_STARTX,
120           TOK_THEN,
121           TOK_TO,
122           TOK_UNTIL,
123           TOK_VALUE,
124           TOK_VARIABLE,
125           TOK_VERSION1,
126           TOK_WHILE,
127 
128           /* Tokenizer directives */
129           TOK_BEGTOK,
130           TOK_EMIT_BYTE,
131           TOK_ENDTOK,
132           TOK_FLOAD,
133 
134           TOK_OTHER
135 };
136