GPBDuration Class Reference

#import <Duration.pbobjc.h>

Inheritance diagram for GPBDuration:

Instance Methods
(instancetype)	- initWithTimeIntervalSince1970:
Instance Methods inherited from GPBMessage
(instancetype)	- initWithData:error:
(instancetype)	- initWithData:extensionRegistry:error:
(instancetype)	- initWithCodedInputStream:extensionRegistry:error:
(void)	- writeToCodedOutputStream:
	Writes out the message to the given output stream. More...
(void)	- writeToOutputStream:
	Writes out the message to the given output stream. More...
(void)	- writeDelimitedToCodedOutputStream:
(void)	- writeDelimitedToOutputStream:
(nullable NSData *)	- data
(NSData *)	- delimitedData
(size_t)	- serializedSize
(GPBDescriptor *)	- descriptor
	Return the descriptor for the message. More...
(BOOL)	- hasExtension:
	Test to see if the given extension is set on the message. More...
(nullable id)	- getExtension:
(void)	- setExtension:value:
(void)	- addExtension:value:
(void)	- setExtension:index:value:
(void)	- clearExtension:
	Clears the given extension for this message. More...
(void)	- clear
	Resets all of the fields of this message to their default values. More...
(void)	- mergeFromData:extensionRegistry:
(void)	- mergeFrom:

Properties
int64_t	seconds
int32_t	nanos
NSTimeInterval	timeIntervalSince1970
Properties inherited from GPBMessage
GPBUnknownFieldSet *	unknownFields
BOOL	initialized
	Are all required fields set in the message and all embedded messages. More...

Additional Inherited Members
Class Methods inherited from GPBMessage
(instancetype)	+ message
	Returns an autoreleased instance. More...
(instancetype)	+ parseFromData:error:
(instancetype)	+ parseFromData:extensionRegistry:error:
(instancetype)	+ parseFromCodedInputStream:extensionRegistry:error:
(instancetype)	+ parseDelimitedFromCodedInputStream:extensionRegistry:error:
(GPBDescriptor *)	+ descriptor
	Return the descriptor for the message class. More...

Detailed Description

A Duration represents a signed, fixed-length span of time represented as a count of seconds and fractions of seconds at nanosecond resolution. It is independent of any calendar and concepts like "day" or "month". It is related to Timestamp in that the difference between two Timestamp values is a Duration and it can be added or subtracted from a Timestamp. Range is approximately +-10,000 years.

Example 1: Compute Duration from two Timestamps in pseudo code.

Timestamp start = ...;
Timestamp end = ...;
Duration duration = ...;

duration.seconds = end.seconds - start.seconds;
duration.nanos = end.nanos - start.nanos;

if (duration.seconds < 0 && duration.nanos > 0) {
  duration.seconds += 1;
  duration.nanos -= 1000000000;
} else if (durations.seconds > 0 && duration.nanos < 0) {
  duration.seconds -= 1;
  duration.nanos += 1000000000;
}

Example 2: Compute Timestamp from Timestamp + Duration in pseudo code.

Timestamp start = ...;
Duration duration = ...;
Timestamp end = ...;

end.seconds = start.seconds + duration.seconds;
end.nanos = start.nanos + duration.nanos;

if (end.nanos < 0) {
  end.seconds -= 1;
  end.nanos += 1000000000;
} else if (end.nanos >= 1000000000) {
  end.seconds += 1;
  end.nanos -= 1000000000;
}  

Method Documentation

initWithTimeIntervalSince1970:()

- (instancetype) initWithTimeIntervalSince1970:

(NSTimeInterval)

timeIntervalSince1970

Provided by category GPBDuration(GBPWellKnownTypes).

Property Documentation

nanos

- (int32_t) nanos

readwritenonatomicassign

Signed fractions of a second at nanosecond resolution of the span of time. Durations less than one second are represented with a 0 seconds field and a positive or negative nanos field. For durations of one second or more, a non-zero value for the nanos field must be of the same sign as the seconds field. Must be from -999,999,999 to +999,999,999 inclusive.

seconds

- (int64_t) seconds

readwritenonatomicassign

Signed seconds of the span of time. Must be from -315,576,000,000 to +315,576,000,000 inclusive.

timeIntervalSince1970

- (NSTimeInterval) timeIntervalSince1970

readwritenonatomicassign

Provided by category GPBDuration(GBPWellKnownTypes).

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The documentation for this class was generated from the following file:

• Source/ThirdParty/libwebrtc/Source/third_party/protobuf/objectivec/google/protobuf/Duration.pbobjc.h