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Allow field identifiers be any numbers if #[serde(other)] is used

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Thus behavior synchronized between string/bytes identifiers and numeric identifiers
This commit is contained in:
Mingun
2020-10-22 10:18:27 +05:00
parent 34de1e00c8
commit 0737474640
7 changed files with 42 additions and 50 deletions
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serde_derive/src/de.rs
+31 -6
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@@ -1940,6 +1940,15 @@ fn deserialize_generated_identifier(
}
}
/// Generates `Deserialize::deserialize` body for
/// ```ignore
/// #[serde(field_identifier)]
/// enum Field {
/// }
/// #[serde(variant_identifier)]
/// enum Variant {
/// }
/// ```
fn deserialize_custom_identifier(
params: &Parameters,
variants: &[Variant],
@@ -1957,6 +1966,8 @@ fn deserialize_custom_identifier(
let (ordinary, fallthrough) = if let Some(last) = variants.last() {
let last_ident = &last.ident;
if last.attrs.other() {
// Processes `#[serde(other)]` attribute. It always belongs to the last variant
// (checked in `check_identifier`), so all other are ordinal variants
let ordinary = &variants[..variants.len() - 1];
let fallthrough = quote!(_serde::export::Ok(#this::#last_ident));
(ordinary, Some(fallthrough))
@@ -1976,6 +1987,10 @@ fn deserialize_custom_identifier(
(variants, None)
};
// List of tuples:
// - field or variant name in the expected messages
// - information about field/variant
// - list of alternate names of the field/variant
let names_idents: Vec<_> = ordinary
.iter()
.map(|variant| {
@@ -2106,7 +2121,7 @@ fn deserialize_identifier(
(None, None, None, None)
};
let fallthrough_arm = if let Some(fallthrough) = fallthrough {
let fallthrough_arm = if let Some(fallthrough) = fallthrough.clone() {
fallthrough
} else if is_variant {
quote! {
@@ -2118,8 +2133,19 @@ fn deserialize_identifier(
}
};
let u64_fallthrough_arm = if let Some(fallthrough) = fallthrough {
fallthrough
} else {
let fallthrough_msg = format!("{} index 0 <= i < {}", index_expecting, fields.len());
quote! {
_serde::export::Err(_serde::de::Error::invalid_value(
_serde::de::Unexpected::Unsigned(__value),
&#fallthrough_msg,
))
}
};
let variant_indices = 0_u64..;
let fallthrough_msg = format!("{} index 0 <= i < {}", index_expecting, fields.len());
let visit_other = if collect_other_fields {
quote! {
fn visit_bool<__E>(self, __value: bool) -> _serde::export::Result<Self::Value, __E>
@@ -2254,10 +2280,9 @@ fn deserialize_identifier(
#(
#variant_indices => _serde::export::Ok(#main_constructors),
)*
_ => _serde::export::Err(_serde::de::Error::invalid_value(
_serde::de::Unexpected::Unsigned(__value),
&#fallthrough_msg,
))
_ => {
#u64_fallthrough_arm
}
}
}
}