mirror of
https://github.com/kichikuou/xsystem35-sdl2.git
synced 2026-09-29 10:18:11 +03:00
316 lines
8.7 KiB
C
316 lines
8.7 KiB
C
/*
|
|
* cali.c 計算式の評価
|
|
*
|
|
* Copyright (C) 1997-1998 Masaki Chikama (Wren) <chikama@kasumi.ipl.mech.nagoya-u.ac.jp>
|
|
* 1998- <masaki-c@is.aist-nara.ac.jp>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*
|
|
* 0.00 97/11/27 初版
|
|
* 0.01 97/12/06 計算式の評価順序がおかしかった
|
|
* @version 0.01-01 97/12/06 メッセージから日本語を削除
|
|
*
|
|
*/
|
|
/* $Id: cali.c,v 1.16 2002/12/31 04:11:19 chikama Exp $ */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include "portab.h"
|
|
#include "variable.h"
|
|
#include "scenario.h"
|
|
#include "xsystem35.h"
|
|
|
|
#define CALI_TRUE (1) /* comparison is ture */
|
|
#define CALI_FALSE (0) /* comparison is false */
|
|
#define CALI_MAX_VAL (65535) /* maxinum of value */
|
|
#define CALI_MIN_VAL (0) /* mininum of value */
|
|
#define CALI_NaN (CALI_MIN_VAL) /* devied by 0 */
|
|
#define CALI_OF (CALI_MAX_VAL) /* calculate over flow */
|
|
#define CALI_SubNG (CALI_MIN_VAL) /* nagative result */
|
|
#define CALI_TERMINATER (0x7f) /* terminater */
|
|
|
|
#define CALI_DEPTH_MAX (256)
|
|
|
|
int getCaliValue();
|
|
int *getCaliVariable();
|
|
int *getVariable();
|
|
|
|
int preVarPage; /* 直前にアクセスした変数のページ */
|
|
int preVarIndex; /* 直前にアクセスした変数のINDEX */
|
|
int preVarNo; /* 直前にアクセスした変数の番号 */
|
|
|
|
static int buf[CALI_DEPTH_MAX]; /* 計算式バッファ */
|
|
static int *cali = buf; /* インデックス */
|
|
|
|
static void undeferr() {
|
|
SYSERROR("Undefined Command:@ %03d,%05x\n", sl_getPage(), sl_getIndex());
|
|
}
|
|
|
|
/* 配列のオフセットを確定する */
|
|
static int *fixOffset(int base, int offset2) {
|
|
int page, offset;
|
|
int *index;
|
|
|
|
preVarPage = (sysVarAttribute + base) -> page;
|
|
preVarNo = base;
|
|
if ((sysVarAttribute + base) -> page == 0) {
|
|
if (offset2 == -1) {
|
|
#ifdef DEBUG_CHECKALING
|
|
if (base >= SYSVAR_MAX) {
|
|
WARNING("sysVar[no] ArrayIndexOutofException (%d, %d)\n", base, offset2);
|
|
return NULL;
|
|
}
|
|
#endif
|
|
preVarIndex = base;
|
|
return sysVar + base;
|
|
} else {
|
|
#ifdef DEBUG_CHECKALING
|
|
if ((base + offset2) >= SYSVAR_MAX) {
|
|
WARNING("sysVar[no] ArrayIndexOutofException (%d, %d)\n", base, offset2);
|
|
return NULL;
|
|
}
|
|
#endif
|
|
preVarIndex = base + offset2;
|
|
return sysVar + base + offset2;
|
|
}
|
|
} else {
|
|
if (offset2 == -1) {
|
|
index = (sysVarAttribute + base) -> pointvar;
|
|
page = (sysVarAttribute + base) -> page;
|
|
offset = (sysVarAttribute + base) -> offset;
|
|
#ifdef DEBUG_CHECKALING
|
|
if ((*index) + offset > (arrayVarBuffer + page - 1)->max) {
|
|
WARNING("sysVar[no] ArrayIndexOutofException (%d, %d, %d, %d, %d)\n", base, offset2, *index, page, offset);
|
|
return NULL;
|
|
}
|
|
#endif
|
|
preVarIndex = offset + (*index);
|
|
return ((arrayVarBuffer + page - 1) -> value) + offset + (*index);
|
|
} else {
|
|
page = (sysVarAttribute + base) -> page;
|
|
offset = (sysVarAttribute + base) -> offset;
|
|
#ifdef DEBUG_CHECKALING
|
|
if (offset + offset2 > (arrayVarBuffer + page - 1)->max) {
|
|
WARNING("sysVar[no] ArrayIndexOutofException (%d, %d, %d, %d)\n", base, offset2, page, offset);
|
|
return NULL;
|
|
}
|
|
#endif
|
|
preVarIndex = offset + offset2;
|
|
return ((arrayVarBuffer + page - 1) -> value) + offset + offset2;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* 変数番号を返す */
|
|
static int *getVar(int c0) {
|
|
int c1;
|
|
|
|
if ((c0 & 0x40) != 0) { /* 2byte系 */
|
|
c1 = sl_getc();
|
|
if (c0 == 0xc0) {
|
|
if (c1 == 0) {
|
|
SYSERROR("Unknown Parameter\n");
|
|
} else if (c1 == 1) {
|
|
/* SYSTEM35拡張 */
|
|
c0 = (sl_getc() << 8) + sl_getc(); /* varbase */
|
|
c1 = getCaliValue(); /* offset */
|
|
return fixOffset(c0, c1);
|
|
} else if (c1 < 0x40) {
|
|
WARNING("Unknown Parameter\n");
|
|
undeferr();
|
|
} else { /* 2byte系 40h - ffh */
|
|
return fixOffset(c1, -1);
|
|
}
|
|
} else { /* 2byte系 100h - 3fffh */
|
|
return fixOffset(((c0 & 0x3f) * 256) + c1, -1);
|
|
}
|
|
} else { /* 1byte系 */
|
|
return fixOffset(c0 & 0x3f, -1);
|
|
}
|
|
/* 来ないはず */
|
|
SYSERROR("Something was wrong\n");
|
|
return NULL;
|
|
}
|
|
|
|
/* 変数番号が返る */
|
|
int *getCaliVariable() {
|
|
int *c0 = getVar(sl_getc());
|
|
if (sl_getc() != 0x7f) {
|
|
SYSERROR("Something is Wrong @ %03d:%05x\n", sl_getPage(), sl_getIndex());
|
|
}
|
|
return c0;
|
|
}
|
|
|
|
/* 変数代入コマンド用 */
|
|
int *getVariable() {
|
|
return getVar(sl_getc());
|
|
}
|
|
|
|
/* 計算式の評価後の値が返る */
|
|
int getCaliValue() {
|
|
register int ingVal,edVal,rstVal;
|
|
int c0,c1;
|
|
int *bufc = cali;
|
|
|
|
while((c0 = sl_getc()) != CALI_TERMINATER) {
|
|
if ((c0 & 0x80) != 0) { /* variable */
|
|
int c1 = sl_getcAt(sl_getIndex());
|
|
int *t;
|
|
if (c0 == 0xc0) {
|
|
if (c1 == 1 || c1 >= 0x34) goto l_var;
|
|
c1 = sl_getc();
|
|
if (c1 == 2) { /* % */
|
|
ingVal = *--cali;
|
|
edVal = *--cali;
|
|
if (ingVal == 0) {
|
|
*cali = CALI_NaN;
|
|
} else {
|
|
rstVal = edVal % ingVal;
|
|
*cali = rstVal;
|
|
}
|
|
cali++;
|
|
continue;
|
|
} else if (c1 == 3) { /* <= */
|
|
ingVal = *--cali;
|
|
edVal = *--cali;
|
|
if (edVal <= ingVal) { *cali = CALI_TRUE; }
|
|
else { *cali = CALI_FALSE; }
|
|
cali++;
|
|
continue;
|
|
} else if (c1 == 4) { /* >= */
|
|
ingVal = *--cali;
|
|
edVal = *--cali;
|
|
if (edVal >= ingVal) { *cali = CALI_TRUE; }
|
|
else { *cali = CALI_FALSE; }
|
|
cali++;
|
|
continue;
|
|
} else if (c1 < 0x34) {
|
|
SYSERROR("Unknow Parameter @ %03d:%05x\n", sl_getPage(), sl_getIndex());
|
|
}
|
|
}
|
|
l_var:
|
|
t = getVar(c0);
|
|
if (t == NULL) continue;
|
|
*cali = *t; cali++;
|
|
} else {
|
|
switch(c0) {
|
|
case 0x7e: /* != */
|
|
ingVal = *--cali;
|
|
edVal = *--cali;
|
|
if (edVal != ingVal) { *cali = CALI_TRUE; }
|
|
else { *cali = CALI_FALSE; }
|
|
cali++;
|
|
break;
|
|
case 0x7d: /* > */
|
|
ingVal = *--cali;
|
|
edVal = *--cali;
|
|
if (edVal > ingVal) { *cali = CALI_TRUE; }
|
|
else { *cali = CALI_FALSE; }
|
|
cali++;
|
|
break;
|
|
case 0x7c: /* < */
|
|
ingVal = *--cali;
|
|
edVal = *--cali;
|
|
if (edVal < ingVal) { *cali = CALI_TRUE; }
|
|
else { *cali = CALI_FALSE; }
|
|
cali++;
|
|
break;
|
|
case 0x7b: /* == */
|
|
ingVal = *--cali;
|
|
edVal = *--cali;
|
|
if (edVal == ingVal) { *cali = CALI_TRUE; }
|
|
else { *cali = CALI_FALSE; }
|
|
cali++;
|
|
break;
|
|
case 0x7a: /* - */
|
|
ingVal = *--cali;
|
|
edVal = *--cali;
|
|
rstVal = edVal - ingVal;
|
|
if (rstVal < CALI_MIN_VAL) { *cali = CALI_SubNG; }
|
|
else { *cali = rstVal; }
|
|
cali++;
|
|
break;
|
|
case 0x79: /* + */
|
|
ingVal = *--cali;
|
|
edVal = *--cali;
|
|
rstVal = edVal + ingVal;
|
|
if (rstVal > CALI_MAX_VAL) { *cali = CALI_OF; }
|
|
else { *cali = rstVal; }
|
|
cali++;
|
|
break;
|
|
case 0x78: /* / */
|
|
ingVal = *--cali;
|
|
edVal = *--cali;
|
|
if (ingVal == 0) {
|
|
*cali = CALI_NaN;
|
|
} else {
|
|
rstVal = edVal / ingVal;
|
|
*cali = rstVal;
|
|
}
|
|
cali++;
|
|
break;
|
|
case 0x77: /* * */
|
|
ingVal = *--cali;
|
|
edVal = *--cali;
|
|
rstVal = edVal * ingVal;
|
|
if (rstVal > CALI_MAX_VAL) { *cali = CALI_OF; }
|
|
else { *cali = rstVal; }
|
|
cali++;
|
|
break;
|
|
case 0x76: /* XOR */
|
|
ingVal = *--cali;
|
|
edVal = *--cali;
|
|
*cali = (edVal ^ ingVal); cali++;
|
|
break;
|
|
case 0x75: /* OR */
|
|
ingVal = *--cali;
|
|
edVal = *--cali;
|
|
*cali = (edVal | ingVal); cali++;
|
|
break;
|
|
case 0x74: /* AND */
|
|
ingVal = *--cali;
|
|
edVal = *--cali;
|
|
*cali = (edVal & ingVal); cali++;
|
|
break;
|
|
default:
|
|
if ((c0 & 0x40) == 0) { /* WORD const */
|
|
c1 = sl_getc();
|
|
if (c0 == 0) { /* 34h-ffh */
|
|
if (c1 <= 0x33) {
|
|
SYSERROR("Unknown Parameter @ %03d:%05x\n", sl_getPage(), sl_getIndex());
|
|
}
|
|
} else { /* 100h- 3fff */
|
|
c1 += ((c0 & 0x3f) * 256);
|
|
}
|
|
} else { /* byte const 0-33h */
|
|
c1 = (c0 & 0x3f);
|
|
}
|
|
// printf("c1 = %d ",c1);
|
|
*cali = c1; cali++;
|
|
}
|
|
}
|
|
}
|
|
c0 = *--cali;
|
|
#ifdef DEBUG_CHECKALING
|
|
if (cali != bufc) {
|
|
WARNING("Something is wrong @ %03d:%05x\n", sl_getPage(), sl_getIndex());
|
|
cali = bufc;
|
|
return 0;
|
|
}
|
|
#endif
|
|
return c0;
|
|
}
|