c6fde0103c
This is a port of ShortNumberInfo class from Java version of libPhoneNumber into a category on NBPhoneNumberUtil class
65 lines
1.5 KiB
Objective-C
65 lines
1.5 KiB
Objective-C
//
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// NBRegularExpressionCache.m
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// libPhoneNumber
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//
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// Created by Paween Itthipalkul on 11/29/17.
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// Copyright © 2017 Google LLC. All rights reserved.
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//
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#import "NBRegularExpressionCache.h"
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@interface NBRegularExpressionCache()
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@property (nonatomic, strong) NSCache *cache;
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@end
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@implementation NBRegularExpressionCache
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+ (instancetype)sharedInstance {
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static NBRegularExpressionCache *instance;
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static dispatch_once_t token;
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dispatch_once(&token, ^{
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instance = [[NBRegularExpressionCache alloc] init];
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});
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return instance;
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}
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- (instancetype)init {
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self = [super init];
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if (self != nil) {
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_cache = [[NSCache alloc] init];
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}
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return self;
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}
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- (NSRegularExpression *)regularExpressionForPattern:(NSString *)pattern {
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@synchronized(self) {
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NSRegularExpression *cachedObject = [self.cache objectForKey:pattern];
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if (cachedObject != nil) {
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return cachedObject;
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}
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NSError *error = nil;
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NSRegularExpression *regEx = [[NSRegularExpression alloc] initWithPattern:pattern
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options:kNilOptions
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error:&error];
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<<<<<<< HEAD
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if (regEx == nil && error != nil) {
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=======
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if (regEx == nil || error != nil) {
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>>>>>>> Add support for short number and emegerncy number in libPhoneNumber-iOS
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NSLog(@"An error parsing a regular expression: %@", error);
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return nil;
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}
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[self.cache setObject:regEx forKey:pattern];
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return regEx;
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}
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}
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@end
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