140 lines
3.2 KiB
Objective-C
140 lines
3.2 KiB
Objective-C
/*
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* PDP-8/E Simulator
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*
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* Copyright © 1994-2015 Bernhard Baehr
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*
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* MemoryInspectorDWSignedInteger.m - Double Word Signed Integer Memory Inspector
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*
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* This file is part of PDP-8/E Simulator.
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*
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* PDP-8/E Simulator is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#import <Cocoa/Cocoa.h>
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#import "MemoryInspectorProtocol.h"
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#define ORDER_IN_MENU 60
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#define WORDS_PER_ROW 2
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#define CONTENT_WIDTH 8
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#define NEEDS_ALIGNMENT YES
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#define ALLOWS_EDITING YES
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#define MENU_TITLE @"Double Word Signed Integer"
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#define TOOL_TIP @"This column displays the memory content as double word signed integer."
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@interface MemoryInspectorDWSignedInteger : NSFormatter <MemoryInspector>
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{
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}
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@end
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@implementation MemoryInspectorDWSignedInteger
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+ (void) load
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{
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/* dummy to load the class when zero-linking while development */
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}
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- (NSNumber *) orderInMemoryInspectorMenu
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{
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return [NSNumber numberWithInt:ORDER_IN_MENU];
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}
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- (NSString *) menuTitle
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{
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return NSLocalizedString(MENU_TITLE, @"");
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}
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- (unsigned) wordsPerRow
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{
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return WORDS_PER_ROW;
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}
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- (unsigned) contentWidthInCharacters
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{
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return CONTENT_WIDTH;
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}
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- (BOOL) needsMemoryAlignment
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{
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return NEEDS_ALIGNMENT;
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}
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- (BOOL) allowsEditing
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{
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return ALLOWS_EDITING;
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}
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- (NSString *) toolTipForContentColumn
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{
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return NSLocalizedString(TOOL_TIP, @"");
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}
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- (NSString *) stringForObjectValue:(NSArray *)value
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{
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if ([[value class] isSubclassOfClass:[NSString class]])
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return (NSString *) value;
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NSAssert ([value count] == WORDS_PER_ROW, @"Invalid number of words to format");
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int n = [[value objectAtIndex:0] intValue] | ([[value objectAtIndex:1] intValue] << 12);
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if (n & 040000000)
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n |= ~077777777;
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return [NSString stringWithFormat:@"%8d", n];
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}
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- (BOOL) getObjectValue:(id *)value forString:(NSString *)string errorDescription:(NSString **)error
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{
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int n;
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NSMutableArray *val = [NSMutableArray arrayWithCapacity:WORDS_PER_ROW];
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NSScanner *scanner = [NSScanner scannerWithString:string];
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if ([scanner scanInt:&n]) {
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if ((n & ~037777777) != 0 && (n & ~037777777) != ~037777777) {
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if (error)
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*error = NSLocalizedString(@"Double word signed integer out of valid "
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"range from -8388608 to 8388607.", @"");
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return FALSE;
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}
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[val addObject:[NSNumber numberWithInt:077770000 | (n & 07777)]];
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[val addObject:[NSNumber numberWithInt:077770000 | ((n >> 12) & 07777)]];
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} else {
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if (error)
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*error = NSLocalizedString(@"Invalid double word signed integer.", @"");
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return FALSE;
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}
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if (! [scanner isAtEnd]) {
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if (error)
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*error = NSLocalizedString(
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@"Exactly one double word signed integer expected.", @"");
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return FALSE;
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}
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*value = val;
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return TRUE;
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}
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@end
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