aws_sdk_accessanalyzer/protocol_serde/
shape_path_element.rs1pub(crate) fn de_path_element<'a, I>(
3 tokens: &mut ::std::iter::Peekable<I>,
4 _value: &'a [u8],
5) -> ::std::result::Result<Option<crate::types::PathElement>, ::aws_smithy_json::deserialize::error::DeserializeError>
6where
7 I: Iterator<Item = Result<::aws_smithy_json::deserialize::Token<'a>, ::aws_smithy_json::deserialize::error::DeserializeError>>,
8{
9 let mut variant = None;
10 match tokens.next().transpose()? {
11 Some(::aws_smithy_json::deserialize::Token::ValueNull { .. }) => return Ok(None),
12 Some(::aws_smithy_json::deserialize::Token::StartObject { .. }) => loop {
13 match tokens.next().transpose()? {
14 Some(::aws_smithy_json::deserialize::Token::EndObject { .. }) => break,
15 Some(::aws_smithy_json::deserialize::Token::ObjectKey { key, .. }) => {
16 if let ::std::option::Option::Some(::std::result::Result::Ok(::aws_smithy_json::deserialize::Token::ValueNull { .. })) =
17 tokens.peek()
18 {
19 let _ = tokens.next().expect("peek returned a token")?;
20 continue;
21 }
22 let key = key.to_unescaped()?;
23 if key == "__type" {
24 ::aws_smithy_json::deserialize::token::skip_value(tokens)?;
25 continue;
26 }
27 if variant.is_some() {
28 return Err(::aws_smithy_json::deserialize::error::DeserializeError::custom(
29 "encountered mixed variants in union",
30 ));
31 }
32 variant = match key.as_ref() {
33 "index" => Some(crate::types::PathElement::Index(
34 ::aws_smithy_json::deserialize::token::expect_number_or_null(tokens.next())?
35 .map(i32::try_from)
36 .transpose()?
37 .ok_or_else(|| ::aws_smithy_json::deserialize::error::DeserializeError::custom("value for 'index' cannot be null"))?,
38 )),
39 "key" => Some(crate::types::PathElement::Key(
40 ::aws_smithy_json::deserialize::token::expect_string_or_null(tokens.next())?
41 .map(|s| s.to_unescaped().map(|u| u.into_owned()))
42 .transpose()?
43 .ok_or_else(|| ::aws_smithy_json::deserialize::error::DeserializeError::custom("value for 'key' cannot be null"))?,
44 )),
45 "substring" => Some(crate::types::PathElement::Substring(
46 crate::protocol_serde::shape_substring::de_substring(tokens, _value)?.ok_or_else(|| {
47 ::aws_smithy_json::deserialize::error::DeserializeError::custom("value for 'substring' cannot be null")
48 })?,
49 )),
50 "value" => Some(crate::types::PathElement::Value(
51 ::aws_smithy_json::deserialize::token::expect_string_or_null(tokens.next())?
52 .map(|s| s.to_unescaped().map(|u| u.into_owned()))
53 .transpose()?
54 .ok_or_else(|| ::aws_smithy_json::deserialize::error::DeserializeError::custom("value for 'value' cannot be null"))?,
55 )),
56 _ => {
57 ::aws_smithy_json::deserialize::token::skip_value(tokens)?;
58 Some(crate::types::PathElement::Unknown)
59 }
60 };
61 }
62 other => {
63 return Err(::aws_smithy_json::deserialize::error::DeserializeError::custom(format!(
64 "expected object key or end object, found: {other:?}"
65 )))
66 }
67 }
68 },
69 _ => {
70 return Err(::aws_smithy_json::deserialize::error::DeserializeError::custom(
71 "expected start object or null",
72 ))
73 }
74 }
75 if variant.is_none() {
76 return Err(::aws_smithy_json::deserialize::error::DeserializeError::custom(
77 "Union did not contain a valid variant.",
78 ));
79 }
80 Ok(variant)
81}