protobuf/objectivec/GPBWellKnownTypes.h

// Protocol Buffers - Google's data interchange format
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#import <Foundation/Foundation.h>

// This CPP symbol can be defined to use imports that match up to the framework
// imports needed when using CocoaPods.
#if !defined(GPB_USE_PROTOBUF_FRAMEWORK_IMPORTS)
 #define GPB_USE_PROTOBUF_FRAMEWORK_IMPORTS 0
#endif

#if GPB_USE_PROTOBUF_FRAMEWORK_IMPORTS
 #import <Protobuf/Duration.pbobjc.h>
 #import <Protobuf/Timestamp.pbobjc.h>
#else
 #import "google/protobuf/Duration.pbobjc.h"
 #import "google/protobuf/Timestamp.pbobjc.h"
#endif

NS_ASSUME_NONNULL_BEGIN

// Extension to GPBTimestamp to work with standard Foundation time/date types.
@interface GPBTimestamp (GBPWellKnownTypes)
@property(nonatomic, readwrite, strong) NSDate *date;
@property(nonatomic, readwrite) NSTimeInterval timeIntervalSince1970;
- (instancetype)initWithDate:(NSDate *)date;
- (instancetype)initWithTimeIntervalSince1970:(NSTimeInterval)timeIntervalSince1970;
@end

// Extension to GPBDuration to work with standard Foundation time type.
@interface GPBDuration (GBPWellKnownTypes)
@property(nonatomic, readwrite) NSTimeInterval timeIntervalSince1970;
- (instancetype)initWithTimeIntervalSince1970:(NSTimeInterval)timeIntervalSince1970;
@end

NS_ASSUME_NONNULL_END