// Code generated by software.amazon.smithy.rust.codegen.smithy-rs. DO NOT EDIT.
pub(crate) fn de_guardrail_automated_reasoning_finding<'a, I>(
    tokens: &mut ::std::iter::Peekable<I>,
) -> ::std::result::Result<Option<crate::types::GuardrailAutomatedReasoningFinding>, ::aws_smithy_json::deserialize::error::DeserializeError>
where
    I: Iterator<Item = Result<::aws_smithy_json::deserialize::Token<'a>, ::aws_smithy_json::deserialize::error::DeserializeError>>,
{
    let mut variant = None;
    match tokens.next().transpose()? {
        Some(::aws_smithy_json::deserialize::Token::ValueNull { .. }) => return Ok(None),
        Some(::aws_smithy_json::deserialize::Token::StartObject { .. }) => loop {
            match tokens.next().transpose()? {
                Some(::aws_smithy_json::deserialize::Token::EndObject { .. }) => break,
                Some(::aws_smithy_json::deserialize::Token::ObjectKey { key, .. }) => {
                    if let ::std::option::Option::Some(::std::result::Result::Ok(::aws_smithy_json::deserialize::Token::ValueNull { .. })) =
                        tokens.peek()
                    {
                        let _ = tokens.next().expect("peek returned a token")?;
                        continue;
                    }
                    let key = key.to_unescaped()?;
                    if key == "__type" {
                        ::aws_smithy_json::deserialize::token::skip_value(tokens)?;
                        continue;
                    }
                    if variant.is_some() {
                        return Err(::aws_smithy_json::deserialize::error::DeserializeError::custom(
                            "encountered mixed variants in union",
                        ));
                    }
                    variant = match key.as_ref() {
                            "valid" => {
                                Some(crate::types::GuardrailAutomatedReasoningFinding::Valid(
                                    crate::protocol_serde::shape_guardrail_automated_reasoning_valid_finding::de_guardrail_automated_reasoning_valid_finding(tokens)?
                                    .ok_or_else(|| ::aws_smithy_json::deserialize::error::DeserializeError::custom("value for 'valid' cannot be null"))?
                                ))
                            }
                            "invalid" => {
                                Some(crate::types::GuardrailAutomatedReasoningFinding::Invalid(
                                    crate::protocol_serde::shape_guardrail_automated_reasoning_invalid_finding::de_guardrail_automated_reasoning_invalid_finding(tokens)?
                                    .ok_or_else(|| ::aws_smithy_json::deserialize::error::DeserializeError::custom("value for 'invalid' cannot be null"))?
                                ))
                            }
                            "satisfiable" => {
                                Some(crate::types::GuardrailAutomatedReasoningFinding::Satisfiable(
                                    crate::protocol_serde::shape_guardrail_automated_reasoning_satisfiable_finding::de_guardrail_automated_reasoning_satisfiable_finding(tokens)?
                                    .ok_or_else(|| ::aws_smithy_json::deserialize::error::DeserializeError::custom("value for 'satisfiable' cannot be null"))?
                                ))
                            }
                            "impossible" => {
                                Some(crate::types::GuardrailAutomatedReasoningFinding::Impossible(
                                    crate::protocol_serde::shape_guardrail_automated_reasoning_impossible_finding::de_guardrail_automated_reasoning_impossible_finding(tokens)?
                                    .ok_or_else(|| ::aws_smithy_json::deserialize::error::DeserializeError::custom("value for 'impossible' cannot be null"))?
                                ))
                            }
                            "translationAmbiguous" => {
                                Some(crate::types::GuardrailAutomatedReasoningFinding::TranslationAmbiguous(
                                    crate::protocol_serde::shape_guardrail_automated_reasoning_translation_ambiguous_finding::de_guardrail_automated_reasoning_translation_ambiguous_finding(tokens)?
                                    .ok_or_else(|| ::aws_smithy_json::deserialize::error::DeserializeError::custom("value for 'translationAmbiguous' cannot be null"))?
                                ))
                            }
                            "tooComplex" => {
                                Some(crate::types::GuardrailAutomatedReasoningFinding::TooComplex(
                                    crate::protocol_serde::shape_guardrail_automated_reasoning_too_complex_finding::de_guardrail_automated_reasoning_too_complex_finding(tokens)?
                                    .ok_or_else(|| ::aws_smithy_json::deserialize::error::DeserializeError::custom("value for 'tooComplex' cannot be null"))?
                                ))
                            }
                            "noTranslations" => {
                                Some(crate::types::GuardrailAutomatedReasoningFinding::NoTranslations(
                                    crate::protocol_serde::shape_guardrail_automated_reasoning_no_translations_finding::de_guardrail_automated_reasoning_no_translations_finding(tokens)?
                                    .ok_or_else(|| ::aws_smithy_json::deserialize::error::DeserializeError::custom("value for 'noTranslations' cannot be null"))?
                                ))
                            }
                            _ => {
                                                                              ::aws_smithy_json::deserialize::token::skip_value(tokens)?;
                                                                              Some(crate::types::GuardrailAutomatedReasoningFinding::Unknown)
                                                                            }
                        };
                }
                other => {
                    return Err(::aws_smithy_json::deserialize::error::DeserializeError::custom(format!(
                        "expected object key or end object, found: {other:?}"
                    )))
                }
            }
        },
        _ => {
            return Err(::aws_smithy_json::deserialize::error::DeserializeError::custom(
                "expected start object or null",
            ))
        }
    }
    if variant.is_none() {
        return Err(::aws_smithy_json::deserialize::error::DeserializeError::custom(
            "Union did not contain a valid variant.",
        ));
    }
    Ok(variant)
}
