usr.bin/fgen/fgen.h

   1 /*      $NetBSD: fgen.h,v 1.7 2009/04/12 03:35:43 lukem 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   0xF00DBABE
  42 #define MACRO   0xFEEDBABE
  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_ENDCOMMENT,
  86         TOK_COLON,
  87         TOK_SEMICOLON,
  88         TOK_TOSTRING,
  89
  90         /* These are special */
  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_ENDCASE,
 105         TOK_ENDOF,
 106         TOK_EXTERNAL,
 107         TOK_FIELD,
 108         TOK_HEADERLESS,
 109         TOK_HEADERS,
 110         TOK_IF,
 111         TOK_LEAVE,
 112         TOK_LOOP,
 113         TOK_OF,
 114         TOK_REPEAT,
 115         TOK_THEN,
 116         TOK_TO,
 117         TOK_UNTIL,
 118         TOK_VALUE,
 119         TOK_VARIABLE,
 120         TOK_WHILE,
 121         TOK_OFFSET16,
 122
 123         /* Tokenizer directives */
 124         TOK_BEGTOK,
 125         TOK_EMIT_BYTE,
 126         TOK_ENDTOK,
 127         TOK_FLOAD,
 128
 129         TOK_OTHER
 130 };