override fun getSerializerDescriptorGenerator()

in codegen/smithy-aws-kotlin-codegen/src/main/kotlin/aws/sdk/kotlin/codegen/protocols/AwsQuery.kt [43:84]
35 lines of code
1 McCabe index (conditional complexity)

    override fun getSerializerDescriptorGenerator(
        ctx: ProtocolGenerator.GenerationContext,
        shape: Shape,
        members: List<MemberShape>,
        writer: KotlinWriter,
    ): AbstractSerdeDescriptorGenerator =
        AwsQuerySerdeFormUrlDescriptorGenerator(ctx.toRenderingContext(this, shape, writer), members)

    /**
     * Unwraps the response body as specified by
     * https://awslabs.github.io/smithy/1.0/spec/aws/aws-query-protocol.html#response-serialization so that the
     * deserializer is in the correct state.
     */
    override fun unwrapOperationResponseBody(
        operationName: String,
        writer: KotlinWriter
    ) {
        writer
            .addImport(
                RuntimeTypes.Serde.SdkFieldDescriptor,
                RuntimeTypes.Serde.SerdeXml.XmlSerialName,
                RuntimeTypes.Serde.SdkObjectDescriptor,
                RuntimeTypes.Serde.deserializeStruct
            )
            .write("")
            .write("val resultDescriptor = #T(SerialKind.Struct, #T(#S))", RuntimeTypes.Serde.SdkFieldDescriptor, RuntimeTypes.Serde.SerdeXml.XmlSerialName, "${operationName}Result")
            .openBlock("val wrapperDescriptor = #T.build {", "}", RuntimeTypes.Serde.SdkObjectDescriptor) {
                writer
                    .addImport(RuntimeTypes.Serde.field)
                    .write("trait(#T(#S))", RuntimeTypes.Serde.SerdeXml.XmlSerialName, "${operationName}Response")
                    .write("#T(resultDescriptor)", RuntimeTypes.Serde.field)
            }
            .write("")
            // abandon the iterator, this only occurs at the top level operational output
            .write("val wrapper = deserializer.#T(wrapperDescriptor)", RuntimeTypes.Serde.deserializeStruct)
            .openBlock("if (wrapper.findNextFieldIndex() != resultDescriptor.index) {", "}") {
                writer
                    .addImport(RuntimeTypes.Serde.DeserializationException)
                    .write("throw #T(#S)", RuntimeTypes.Serde.DeserializationException, "failed to unwrap $operationName response")
            }
        writer.write("")
    }