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36ccd9a5f5
Except where the expansion would be syntactically invalid, for example "goto macroarg;" detection of which is a bug in clang-tidy, so warn it off with a NOLINT...(bugprone-macro-parentheses)
125 lines
3.4 KiB
C
125 lines
3.4 KiB
C
/* $Id: lsthandl.c,v 1.4 1999/05/31 23:35:38 sybalsky Exp $ (C) Copyright Venue, All Rights Reserved
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*/
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/************************************************************************/
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/* */
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/* (C) Copyright 1989-99 Venue. All Rights Reserved. */
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/* Manufactured in the United States of America. */
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/* */
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/************************************************************************/
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/************************************************************************/
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/*
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Including : OP_fmemb
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OP_listget
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*/
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/**********************************************************************/
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#include "version.h"
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#include "lispemul.h"
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#include "emlglob.h"
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#include "lspglob.h"
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#include "lsptypes.h"
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#include "address.h"
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#include "adr68k.h"
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#include "cell.h"
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#include "lsthandldefs.h"
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#include "car-cdrdefs.h"
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#include "vars3defs.h"
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/***********************************************************************/
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/* N_OP_fmemb */
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/**********************************************************************/
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LispPTR N_OP_fmemb(register LispPTR item, register LispPTR tos) { /* OP 34Q */
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while (Listp(tos)) {
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if (item == car(tos)) return tos;
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tos = cdr(tos);
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/* if we get an interrupt, punt so we can handle it safely */
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if (!Irq_Stk_End) { TIMER_EXIT(tos); }
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}
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if (tos) ERROR_EXIT(tos);
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return tos;
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} /* N_OP_fmemb end */
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/***********************************************************************/
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/*
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Func Name : fmemb(item,list)
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>>For User programming<<
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NOTE: You should not handle long list, because it doesn't care
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about interrupt.
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*/
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/**********************************************************************/
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LispPTR fmemb(register LispPTR item, register LispPTR list) {
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while (Listp(list)) {
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if (item == car(list)) return (list);
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list = cdr(list);
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}
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if (list) return (list);
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return (list);
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} /* fmemb end */
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/***********************************************************************/
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/*
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Func Name : N_OP_listget
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Opcode : 47Q
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*/
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/**********************************************************************/
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#define SAVE_ERROR_EXIT2(topcstk, tos) \
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{ \
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Scratch_CSTK = topcstk; \
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ERROR_EXIT(tos); \
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}
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#define S_N_CHECKANDCADR2(sour, dest, tos, tcstk) \
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{ \
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register LispPTR parm = sour; \
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if (GetTypeNumber(parm) != TYPE_LISTP) { \
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SAVE_ERROR_EXIT2(tcstk, tos); \
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} else \
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(dest) = cadr(parm); \
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}
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LispPTR N_OP_listget(register LispPTR plist, register LispPTR tos) {
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struct cadr_cell cadrobj;
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while (plist != NIL_PTR) {
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S_N_CHECKANDCADR2(plist, cadrobj, tos, plist);
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if (cadrobj.car_cell == tos) {
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if (cadrobj.cdr_cell == NIL_PTR) return NIL_PTR;
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if (Listp(cadrobj.cdr_cell))
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return (car(cadrobj.cdr_cell));
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else /* must punt in case car/cdrerr */
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SAVE_ERROR_EXIT2(plist, tos);
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}
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if (!Listp(cadrobj.cdr_cell)) { /* this list ended before we found prop */
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return (NIL_PTR);
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}
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S_N_CHECKANDCADR2(cadrobj.cdr_cell, cadrobj, tos, plist);
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plist = cadrobj.cdr_cell;
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if (!Irq_Stk_End) {
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/* for continuation, it becomes plist on next time */
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Scratch_CSTK = plist;
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TIMER_EXIT(tos);
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}
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}
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return (NIL_PTR);
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} /* N_OP_listget end */
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