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1.1 ! nbrk 1: %{
! 2: /*
! 3: /* $OpenBSD: aicasm_macro_scan.l,v 1.4 2004/09/18 19:51:53 mickey Exp $ */
! 4: /*
! 5: * Sub-Lexical Analyzer for macro invokation in
! 6: * the Aic7xxx SCSI Host adapter sequencer assembler.
! 7: *
! 8: * Copyright (c) 2001 Adaptec Inc.
! 9: * All rights reserved.
! 10: *
! 11: * Redistribution and use in source and binary forms, with or without
! 12: * modification, are permitted provided that the following conditions
! 13: * are met:
! 14: * 1. Redistributions of source code must retain the above copyright
! 15: * notice, this list of conditions, and the following disclaimer,
! 16: * without modification.
! 17: * 2. Redistributions in binary form must reproduce at minimum a disclaimer
! 18: * substantially similar to the "NO WARRANTY" disclaimer below
! 19: * ("Disclaimer") and any redistribution must be conditioned upon
! 20: * including a substantially similar Disclaimer requirement for further
! 21: * binary redistribution.
! 22: * 3. Neither the names of the above-listed copyright holders nor the names
! 23: * of any contributors may be used to endorse or promote products derived
! 24: * from this software without specific prior written permission.
! 25: *
! 26: * Alternatively, this software may be distributed under the terms of the
! 27: * GNU General Public License ("GPL") version 2 as published by the Free
! 28: * Software Foundation.
! 29: *
! 30: * NO WARRANTY
! 31: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
! 32: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
! 33: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
! 34: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
! 35: * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 36: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 37: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 38: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
! 39: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
! 40: * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 41: * POSSIBILITY OF SUCH DAMAGES.
! 42: *
! 43: * $Id: aicasm_macro_scan.l,v 1.4 2004/09/18 19:51:53 mickey Exp $
! 44: *
! 45: * $FreeBSD: src/sys/dev/aic7xxx/aicasm/aicasm_macro_scan.l,v 1.5 2003/12/16 23:54:07 gibbs Exp $
! 46: */
! 47:
! 48: #include <sys/types.h>
! 49:
! 50: #include <inttypes.h>
! 51: #include <limits.h>
! 52: #include <regex.h>
! 53: #include <stdio.h>
! 54: #include <string.h>
! 55: #include <sysexits.h>
! 56: #ifdef __linux__
! 57: #include "../queue.h"
! 58: #else
! 59: #include <sys/queue.h>
! 60: #endif
! 61:
! 62: #include "aicasm.h"
! 63: #include "aicasm_symbol.h"
! 64: #include "aicasm_macro_gram.h"
! 65:
! 66: #define MAX_STR_CONST 4096
! 67: static char string_buf[MAX_STR_CONST];
! 68: static char *string_buf_ptr;
! 69: static int parren_count;
! 70: static char buf[255];
! 71: %}
! 72:
! 73: WORD [A-Za-z_][-A-Za-z_0-9]*
! 74: SPACE [ \t]+
! 75: MCARG [^(), \t]+
! 76:
! 77: %x ARGLIST
! 78:
! 79: %%
! 80: \n {
! 81: ++yylineno;
! 82: }
! 83: \r ;
! 84: <ARGLIST>{SPACE} ;
! 85: <ARGLIST>\( {
! 86: parren_count++;
! 87: if (parren_count == 1) {
! 88: string_buf_ptr = string_buf;
! 89: return ('(');
! 90: }
! 91: *string_buf_ptr++ = '(';
! 92: }
! 93: <ARGLIST>\) {
! 94: if (parren_count == 1) {
! 95: if (string_buf_ptr != string_buf) {
! 96: /*
! 97: * Return an argument and
! 98: * rescan this parren so we
! 99: * can return it as well.
! 100: */
! 101: *string_buf_ptr = '\0';
! 102: mmlval.str = string_buf;
! 103: string_buf_ptr = string_buf;
! 104: unput(')');
! 105: return T_ARG;
! 106: }
! 107: BEGIN INITIAL;
! 108: return (')');
! 109: }
! 110: parren_count--;
! 111: *string_buf_ptr++ = ')';
! 112: }
! 113: <ARGLIST>{MCARG} {
! 114: char *yptr;
! 115:
! 116: yptr = mmtext;
! 117: while (*yptr)
! 118: *string_buf_ptr++ = *yptr++;
! 119: }
! 120: <ARGLIST>\, {
! 121: if (string_buf_ptr != string_buf) {
! 122: /*
! 123: * Return an argument and
! 124: * rescan this comma so we
! 125: * can return it as well.
! 126: */
! 127: *string_buf_ptr = '\0';
! 128: mmlval.str = string_buf;
! 129: string_buf_ptr = string_buf;
! 130: unput(',');
! 131: return T_ARG;
! 132: }
! 133: return ',';
! 134: }
! 135: {WORD}[(] {
! 136: /* May be a symbol or a macro invocation. */
! 137: mmlval.sym = symtable_get(mmtext);
! 138: if (mmlval.sym->type != MACRO) {
! 139: stop("Expecting Macro Name",
! 140: EX_DATAERR);
! 141: }
! 142: unput('(');
! 143: parren_count = 0;
! 144: BEGIN ARGLIST;
! 145: return T_SYMBOL;
! 146: }
! 147: . {
! 148: snprintf(buf, sizeof(buf), "Invalid character "
! 149: "'%c'", mmtext[0]);
! 150: stop(buf, EX_DATAERR);
! 151: }
! 152: %%
! 153:
! 154: int
! 155: mmwrap()
! 156: {
! 157: stop("EOF encountered in macro call", EX_DATAERR);
! 158: }