iska
b693a60358
Do not allocate empty collections for child nodes or attributes when initializing new HTML Nodes or Elements. These are initialized the first time they are accessed. Analogously, the mutable data string of CharacterData is also allocated with the empty string on first access.
115 lines
2.4 KiB
Objective-C
115 lines
2.4 KiB
Objective-C
//
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// HTMLCharacterData.m
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// HTMLKit
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//
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// Created by Iska on 26/11/16.
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// Copyright © 2016 BrainCookie. All rights reserved.
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//
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#import "HTMLCharacterData.h"
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#import "HTMLNode+Private.h"
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#import "HTMLDocument+Private.h"
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#import "HTMLKitDOMExceptions.h"
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@interface HTMLCharacterData ()
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{
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NSMutableString *_data;
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}
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@end
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@implementation HTMLCharacterData
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@synthesize data = _data;
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- (instancetype)initWithName:(NSString *)name type:(HTMLNodeType)type data:(NSString *)data
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{
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self = [super initWithName:name type:type];
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if (self) {
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if (data) {
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_data = [[NSMutableString alloc] initWithString:data];
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}
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}
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return self;
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}
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- (NSString *)data
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{
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if (_data == nil) {
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_data = [[NSMutableString alloc] initWithString:@""];
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}
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return _data;
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}
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- (NSString *)textContent
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{
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return [self.data copy];
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}
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- (void)setTextContent:(NSString *)textContent
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{
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[self setData:textContent];
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}
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- (NSUInteger)length
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{
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return self.data.length;
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}
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#pragma mark - Data
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NS_INLINE void CheckValidOffset(HTMLCharacterData *node, NSUInteger offset, NSString *cmd)
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{
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if (offset > node.length) {
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[NSException raise:HTMLKitIndexSizeError
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format:@"%@: Index Size Error, invalid index %lu for character data node %@.",
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cmd, (unsigned long)offset, node];
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}
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}
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- (void)setData:(NSString *)data
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{
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[self replaceDataInRange:NSMakeRange(0, self.length) withData:data];
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}
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- (void)appendData:(NSString *)data
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{
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[self replaceDataInRange:NSMakeRange(self.length, 0) withData:data];
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}
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- (void)insertData:(NSString *)data atOffset:(NSUInteger)offset
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{
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[self replaceDataInRange:NSMakeRange(offset, 0) withData:data];
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}
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- (void)deleteDataInRange:(NSRange)range
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{
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[self replaceDataInRange:range withData:@""];
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}
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- (void)replaceDataInRange:(NSRange)range withData:(NSString *)data
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{
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CheckValidOffset(self, range.location, NSStringFromSelector(_cmd));
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range.length = MIN(range.length, self.length - range.location);
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[(NSMutableString *)self.data replaceCharactersInRange:range withString:data];
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[self.ownerDocument didRemoveCharacterDataInNode:self atOffset:range.location withLength:range.length];
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[self.ownerDocument didAddCharacterDataToNode:self atOffset:range.location withLength:data.length];
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}
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- (NSString *)substringDataWithRange:(NSRange)range
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{
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return [_data substringWithRange:range];
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}
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#pragma mark - NSCopying
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- (id)copyWithZone:(NSZone *)zone
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{
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HTMLCharacterData *copy = [super copyWithZone:zone];
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copy->_data = [_data mutableCopy];
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return copy;
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}
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@end
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