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fgen.h revision 1.6 
      1 /*	$NetBSD: fgen.h,v 1.6 2009/04/12 03:13:09 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  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *      This product includes software developed by Eduardo Horvath.
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 /* Type of a Cell */
     35 typedef int64_t Cell;
     36 
     37 /* Token from the scanner. */
     38 struct tok {
     39 	int type;
     40 	char *text;
     41 };
     42 
     43 #define TOKEN struct tok
     44 #define YY_DECL TOKEN* yylex(void)
     45 
     46 #define FCODE	0xF00DBABE
     47 #define MACRO	0xFEEDBABE
     48 
     49 /* Defined fcode and string. */
     50 struct fcode {
     51 	char *name;
     52 	long num;
     53 	int type;
     54 	struct fcode *l;
     55 	struct fcode *r;
     56 };
     57 
     58 /* macro instruction as separate words */
     59 struct macro {
     60 	char *name;
     61 	char *equiv;
     62 	int type;
     63 	struct macro *l;
     64 	struct macro *r;
     65 };
     66 
     67 /*
     68  * FCode header -- assumes big-endian machine,
     69  *	otherwise the bits need twiddling.
     70  */
     71 struct fcode_header {
     72 	char	header;
     73 	char	format;
     74 	short	checksum;
     75 	int	length;
     76 };
     77 
     78 /* Tokenizer tokens */
     79 enum toktypes {
     80 	TOK_OCTAL = 8,
     81 	TOK_DECIMAL = 10,
     82 	TOK_HEX = 16,
     83 
     84 	TOK_NUMBER,
     85 	TOK_STRING_LIT,
     86 	TOK_C_LIT,
     87 	TOK_PSTRING,
     88 	TOK_TOKENIZE,
     89 	TOK_COMMENT,
     90 	TOK_ENDCOMMENT,
     91 	TOK_COLON,
     92 	TOK_SEMICOLON,
     93 	TOK_TOSTRING,
     94 
     95 	/* These are special */
     96 	TOK_AGAIN,
     97 	TOK_ALIAS,
     98 	TOK_GETTOKEN,
     99 	TOK_ASCII,
    100 	TOK_BEGIN,
    101 	TOK_BUFFER,
    102 	TOK_CASE,
    103 	TOK_CONSTANT,
    104 	TOK_CONTROL,
    105 	TOK_CREATE,
    106 	TOK_DEFER,
    107 	TOK_DO,
    108 	TOK_ELSE,
    109 	TOK_ENDCASE,
    110 	TOK_ENDOF,
    111 	TOK_EXTERNAL,
    112 	TOK_FIELD,
    113 	TOK_HEADERLESS,
    114 	TOK_HEADERS,
    115 	TOK_IF,
    116 	TOK_LEAVE,
    117 	TOK_LOOP,
    118 	TOK_OF,
    119 	TOK_REPEAT,
    120 	TOK_THEN,
    121 	TOK_TO,
    122 	TOK_UNTIL,
    123 	TOK_VALUE,
    124 	TOK_VARIABLE,
    125 	TOK_WHILE,
    126 	TOK_OFFSET16,
    127 
    128 	/* Tokenizer directives */
    129 	TOK_BEGTOK,
    130 	TOK_EMIT_BYTE,
    131 	TOK_ENDTOK,
    132 	TOK_FLOAD,
    133 
    134 	TOK_OTHER
    135 };
    136