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fgen.h revision 1.9 
      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