LibIPC: Add a built-in encoder/decoder for AK::Time

Author: https://github.com/trflynn89
Commit: https://github.com/SerenityOS/serenity/commit/1858163d3c
Pull-request: https://github.com/SerenityOS/serenity/pull/17600
Reviewed-by: https://github.com/linusg ✅

Userland/Libraries/LibIPC/Decoder.cpp

@@ -62,6 +62,13 @@ ErrorOr<JsonValue> decode(Decoder& decoder)
     return JsonValue::from_string(json);
 }
 
+template<>
+ErrorOr<Time> decode(Decoder& decoder)
+{
+    auto nanoseconds = TRY(decoder.decode<i64>());
+    return AK::Time::from_nanoseconds(nanoseconds);
+}
+
 template<>
 ErrorOr<URL> decode(Decoder& decoder)
 {

Userland/Libraries/LibIPC/Decoder.h

@@ -87,6 +87,9 @@ ErrorOr<ByteBuffer> decode(Decoder&);
 template<>
 ErrorOr<JsonValue> decode(Decoder&);
 
+template<>
+ErrorOr<Time> decode(Decoder&);
+
 template<>
 ErrorOr<URL> decode(Decoder&);
 

Userland/Libraries/LibIPC/Encoder.cpp

@@ -11,6 +11,7 @@
 #include <AK/JsonObject.h>
 #include <AK/JsonValue.h>
 #include <AK/NumericLimits.h>
+#include <AK/Time.h>
 #include <AK/URL.h>
 #include <LibCore/AnonymousBuffer.h>
 #include <LibCore/DateTime.h>
@@ -73,6 +74,12 @@ ErrorOr<void> encode(Encoder& encoder, JsonValue const& value)
     return encoder.encode(value.serialized<StringBuilder>());
 }
 
+template<>
+ErrorOr<void> encode(Encoder& encoder, Time const& value)
+{
+    return encoder.encode(value.to_nanoseconds());
+}
+
 template<>
 ErrorOr<void> encode(Encoder& encoder, URL const& value)
 {

Userland/Libraries/LibIPC/Encoder.h

@@ -118,6 +118,9 @@ ErrorOr<void> encode(Encoder&, ByteBuffer const&);
 template<>
 ErrorOr<void> encode(Encoder&, JsonValue const&);
 
+template<>
+ErrorOr<void> encode(Encoder&, Time const&);
+
 template<>
 ErrorOr<void> encode(Encoder&, URL const&);