Use encoding.TextMarshaler for string-valued types - #567
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Replace json.Marshaler/json.Unmarshaler with the encoding package TextMarshaler/TextUnmarshaler interfaces on provider types that serialize as a plain string value. TextMarshaler is more semantically correct for these types: json.Marshaler declares "I can be any JSON value" (object, array, number), while TextMarshaler declares "I am a string" which matches what these types actually are. encoding/json calls MarshalText/UnmarshalText automatically, so JSON encoding continues to work unchanged. Additionally, the text interfaces are recognized by other encoders (YAML, XML, CSV), making the types usable in more contexts. UnmarshalText receives the raw string bytes with JSON quotes already stripped, removing the need to json.Unmarshal into an intermediate string variable first. Signed-off-by: Felix Kästner <felix.kaestner@sap.com>
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Replace json.Marshaler/json.Unmarshaler with the encoding package TextMarshaler/TextUnmarshaler interfaces on provider types that serialize as a plain string value.
TextMarshaler is more semantically correct for these types: json.Marshaler declares "I can be any JSON value" (object, array, number), while TextMarshaler declares "I am a string" which matches what these types actually are.
encoding/json calls MarshalText/UnmarshalText automatically, so JSON encoding continues to work unchanged. Additionally, the text interfaces are recognized by other encoders (YAML, XML, CSV), making the types usable in more contexts.
UnmarshalText receives the raw string bytes with JSON quotes already stripped, removing the need to json.Unmarshal into an intermediate string variable first.