157 lines
4.1 KiB
Plaintext
157 lines
4.1 KiB
Plaintext
%{
|
|
/*
|
|
* Sub-Lexical Analyzer for macro invokation in
|
|
* the Aic7xxx SCSI Host adapter sequencer assembler.
|
|
*
|
|
* Copyright (c) 2001 Adaptec Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions, and the following disclaimer,
|
|
* without modification.
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
|
* substantially similar to the "NO WARRANTY" disclaimer below
|
|
* ("Disclaimer") and any redistribution must be conditioned upon
|
|
* including a substantially similar Disclaimer requirement for further
|
|
* binary redistribution.
|
|
* 3. Neither the names of the above-listed copyright holders nor the names
|
|
* of any contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* NO WARRANTY
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGES.
|
|
*
|
|
* $Id: //depot/aic7xxx/aic7xxx/aicasm/aicasm_macro_scan.l#8 $
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <inttypes.h>
|
|
#include <limits.h>
|
|
#include <regex.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sysexits.h>
|
|
#ifdef __linux__
|
|
#include "../queue.h"
|
|
#else
|
|
#include <sys/queue.h>
|
|
#endif
|
|
|
|
#include "aicasm.h"
|
|
#include "aicasm_symbol.h"
|
|
#include "aicasm_macro_gram.h"
|
|
|
|
#define MAX_STR_CONST 4096
|
|
static char string_buf[MAX_STR_CONST];
|
|
static char *string_buf_ptr;
|
|
static int parren_count;
|
|
static char buf[255];
|
|
%}
|
|
|
|
WORD [A-Za-z_][-A-Za-z_0-9]*
|
|
SPACE [ \t]+
|
|
MCARG [^(), \t]+
|
|
|
|
%x ARGLIST
|
|
|
|
%%
|
|
\n {
|
|
++yylineno;
|
|
}
|
|
\r ;
|
|
<ARGLIST>{SPACE} ;
|
|
<ARGLIST>\( {
|
|
parren_count++;
|
|
if (parren_count == 1) {
|
|
string_buf_ptr = string_buf;
|
|
return ('(');
|
|
}
|
|
*string_buf_ptr++ = '(';
|
|
}
|
|
<ARGLIST>\) {
|
|
if (parren_count == 1) {
|
|
if (string_buf_ptr != string_buf) {
|
|
/*
|
|
* Return an argument and
|
|
* rescan this parren so we
|
|
* can return it as well.
|
|
*/
|
|
*string_buf_ptr = '\0';
|
|
mmlval.str = string_buf;
|
|
string_buf_ptr = string_buf;
|
|
unput(')');
|
|
return T_ARG;
|
|
}
|
|
BEGIN INITIAL;
|
|
return (')');
|
|
}
|
|
parren_count--;
|
|
*string_buf_ptr++ = ')';
|
|
}
|
|
<ARGLIST>{MCARG} {
|
|
char *yptr;
|
|
|
|
yptr = mmtext;
|
|
while (*yptr)
|
|
*string_buf_ptr++ = *yptr++;
|
|
}
|
|
<ARGLIST>\, {
|
|
if (string_buf_ptr != string_buf) {
|
|
/*
|
|
* Return an argument and
|
|
* rescan this comma so we
|
|
* can return it as well.
|
|
*/
|
|
*string_buf_ptr = '\0';
|
|
mmlval.str = string_buf;
|
|
string_buf_ptr = string_buf;
|
|
unput(',');
|
|
return T_ARG;
|
|
}
|
|
return ',';
|
|
}
|
|
{WORD}[(] {
|
|
/* May be a symbol or a macro invocation. */
|
|
mmlval.sym = symtable_get(mmtext);
|
|
if (mmlval.sym->type != MACRO) {
|
|
stop("Expecting Macro Name",
|
|
EX_DATAERR);
|
|
}
|
|
unput('(');
|
|
parren_count = 0;
|
|
BEGIN ARGLIST;
|
|
return T_SYMBOL;
|
|
}
|
|
. {
|
|
snprintf(buf, sizeof(buf), "Invalid character "
|
|
"'%c'", mmtext[0]);
|
|
stop(buf, EX_DATAERR);
|
|
}
|
|
%%
|
|
|
|
int
|
|
mmwrap()
|
|
{
|
|
stop("EOF encountered in macro call", EX_DATAERR);
|
|
}
|