mirror of https://github.com/bsnes-emu/bsnes.git
71 lines
2.1 KiB
Objective-C
71 lines
2.1 KiB
Objective-C
//
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// HFFullMemoryByteArray.m
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// HexFiend_2
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//
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// Copyright 2007 ridiculous_fish. All rights reserved.
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//
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#import <HexFiend/HFByteArray_Internal.h>
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#import <HexFiend/HFFullMemoryByteArray.h>
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#import <HexFiend/HFFullMemoryByteSlice.h>
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#import <HexFiend/HFByteSlice.h>
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@implementation HFFullMemoryByteArray
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- (instancetype)init {
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self = [super init];
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data = [[NSMutableData alloc] init];
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return self;
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}
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- (void)dealloc {
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[data release];
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[super dealloc];
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}
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- (unsigned long long)length {
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return [data length];
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}
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- (void)copyBytes:(unsigned char *)dst range:(HFRange)range {
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HFASSERT(range.length == 0 || dst != NULL);
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HFASSERT(HFSumDoesNotOverflow(range.location, range.length));
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HFASSERT(range.location + range.length <= [self length]);
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unsigned char* bytes = [data mutableBytes];
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memmove(dst, bytes + ll2l(range.location), ll2l(range.length));
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}
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- (HFByteArray *)subarrayWithRange:(HFRange)lrange {
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HFRange entireRange = HFRangeMake(0, [self length]);
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HFASSERT(HFRangeIsSubrangeOfRange(lrange, entireRange));
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NSRange range;
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range.location = ll2l(lrange.location);
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range.length = ll2l(lrange.length);
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HFFullMemoryByteArray* result = [[[self class] alloc] init];
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[result->data setData:[data subdataWithRange:range]];
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return [result autorelease];
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}
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- (NSArray *)byteSlices {
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return @[[[[HFFullMemoryByteSlice alloc] initWithData:data] autorelease]];
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}
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- (void)insertByteSlice:(HFByteSlice *)slice inRange:(HFRange)lrange {
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[self incrementGenerationOrRaiseIfLockedForSelector:_cmd];
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HFASSERT([slice length] <= NSUIntegerMax);
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NSUInteger length = ll2l([slice length]);
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NSRange range;
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HFASSERT(lrange.location <= NSUIntegerMax);
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HFASSERT(lrange.length <= NSUIntegerMax);
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HFASSERT(HFSumDoesNotOverflow(lrange.location, lrange.length));
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range.location = ll2l(lrange.location);
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range.length = ll2l(lrange.length);
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void* buff = check_malloc(length);
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[slice copyBytes:buff range:HFRangeMake(0, length)];
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[data replaceBytesInRange:range withBytes:buff length:length];
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free(buff);
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}
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@end
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