override fun deserializeStruct()

in runtime/serde/serde-xml/common/src/aws/smithy/kotlin/runtime/serde/xml/XmlDeserializer.kt [37:68]

23 lines of code
6 McCabe index (conditional complexity)


    override fun deserializeStruct(descriptor: SdkObjectDescriptor): Deserializer.FieldIterator {
        if (firstStructCall) {
            if (!descriptor.hasTrait<XmlSerialName>()) throw DeserializationException("Top-level struct $descriptor requires a XmlSerialName trait but has none.")

            firstStructCall = false

            reader.nextToken() // Matching field descriptors to children tags so consume the start element of top-level struct

            val structToken = if (descriptor.hasTrait<XmlError>()) {
                reader.seek<XmlToken.BeginElement> { it.name == descriptor.expectTrait<XmlError>().errorTag }
            } else {
                reader.seek<XmlToken.BeginElement>()
            } ?: throw DeserializationException("Could not find a begin element for new struct")

            if (validateRootElement) {
                descriptor.requireNameMatch(structToken.name.tag)
            }
        }

        // Consume any remaining terminating tokens from previous deserialization
        reader.seek<XmlToken.BeginElement>()

        // Because attributes set on the root node of the struct, we must read the values before creating the subtree
        val attribFields = reader.tokenAttributesToFieldLocations(descriptor)
        val parentToken = if (reader.lastToken is XmlToken.BeginElement) {
            reader.lastToken as XmlToken.BeginElement
        } else {
            throw DeserializationException("Expected last parsed token to be ${XmlToken.BeginElement::class} but was ${reader.lastToken}")
        }

        return XmlStructDeserializer(descriptor, reader.subTreeReader(), parentToken, attribFields)
    }