//
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// YYTextInput.m
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// YYText <https://github.com/ibireme/YYText>
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//
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// Created by ibireme on 15/4/17.
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// Copyright (c) 2015 ibireme.
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//
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// This source code is licensed under the MIT-style license found in the
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// LICENSE file in the root directory of this source tree.
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//
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#import "YYTextInput.h"
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#import "YYTextUtilities.h"
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@implementation YYTextPosition
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+ (instancetype)positionWithOffset:(NSInteger)offset {
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return [self positionWithOffset:offset affinity:YYTextAffinityForward];
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}
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+ (instancetype)positionWithOffset:(NSInteger)offset affinity:(YYTextAffinity)affinity {
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YYTextPosition *p = [self new];
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p->_offset = offset;
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p->_affinity = affinity;
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return p;
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}
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- (instancetype)copyWithZone:(NSZone *)zone {
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return [self.class positionWithOffset:_offset affinity:_affinity];
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}
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- (NSString *)description {
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return [NSString stringWithFormat:@"<%@: %p> (%@%@)", self.class, self, @(_offset), _affinity == YYTextAffinityForward ? @"F":@"B"];
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}
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- (NSUInteger)hash {
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return _offset * 2 + (_affinity == YYTextAffinityForward ? 1 : 0);
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}
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- (BOOL)isEqual:(YYTextPosition *)object {
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if (!object) return NO;
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return _offset == object.offset && _affinity == object.affinity;
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}
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- (NSComparisonResult)compare:(YYTextPosition *)otherPosition {
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if (!otherPosition) return NSOrderedAscending;
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if (_offset < otherPosition.offset) return NSOrderedAscending;
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if (_offset > otherPosition.offset) return NSOrderedDescending;
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if (_affinity == YYTextAffinityBackward && otherPosition.affinity == YYTextAffinityForward) return NSOrderedAscending;
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if (_affinity == YYTextAffinityForward && otherPosition.affinity == YYTextAffinityBackward) return NSOrderedDescending;
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return NSOrderedSame;
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}
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@end
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@implementation YYTextRange {
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YYTextPosition *_start;
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YYTextPosition *_end;
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}
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- (instancetype)init {
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self = [super init];
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if (!self) return nil;
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_start = [YYTextPosition positionWithOffset:0];
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_end = [YYTextPosition positionWithOffset:0];
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return self;
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}
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- (YYTextPosition *)start {
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return _start;
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}
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- (YYTextPosition *)end {
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return _end;
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}
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- (BOOL)isEmpty {
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return _start.offset == _end.offset;
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}
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- (NSRange)asRange {
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return NSMakeRange(_start.offset, _end.offset - _start.offset);
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}
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+ (instancetype)rangeWithRange:(NSRange)range {
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return [self rangeWithRange:range affinity:YYTextAffinityForward];
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}
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+ (instancetype)rangeWithRange:(NSRange)range affinity:(YYTextAffinity)affinity {
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YYTextPosition *start = [YYTextPosition positionWithOffset:range.location affinity:affinity];
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YYTextPosition *end = [YYTextPosition positionWithOffset:range.location + range.length affinity:affinity];
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return [self rangeWithStart:start end:end];
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}
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+ (instancetype)rangeWithStart:(YYTextPosition *)start end:(YYTextPosition *)end {
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if (!start || !end) return nil;
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if ([start compare:end] == NSOrderedDescending) {
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YYTEXT_SWAP(start, end);
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}
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YYTextRange *range = [YYTextRange new];
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range->_start = start;
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range->_end = end;
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return range;
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}
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+ (instancetype)defaultRange {
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return [self new];
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}
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- (instancetype)copyWithZone:(NSZone *)zone {
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return [self.class rangeWithStart:_start end:_end];
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}
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- (NSString *)description {
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return [NSString stringWithFormat:@"<%@: %p> (%@, %@)%@", self.class, self, @(_start.offset), @(_end.offset - _start.offset), _end.affinity == YYTextAffinityForward ? @"F":@"B"];
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}
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- (NSUInteger)hash {
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return (sizeof(NSUInteger) == 8 ? OSSwapInt64(_start.hash) : OSSwapInt32(_start.hash)) + _end.hash;
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}
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- (BOOL)isEqual:(YYTextRange *)object {
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if (!object) return NO;
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return [_start isEqual:object.start] && [_end isEqual:object.end];
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}
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@end
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@implementation YYTextSelectionRect
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@synthesize rect = _rect;
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@synthesize writingDirection = _writingDirection;
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@synthesize containsStart = _containsStart;
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@synthesize containsEnd = _containsEnd;
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@synthesize isVertical = _isVertical;
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- (id)copyWithZone:(NSZone *)zone {
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YYTextSelectionRect *one = [self.class new];
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one.rect = _rect;
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one.writingDirection = _writingDirection;
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one.containsStart = _containsStart;
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one.containsEnd = _containsEnd;
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one.isVertical = _isVertical;
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return one;
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}
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@end
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