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Inline deserialize_struct_as_map_visitor and deserialize_struct_as_struct_visitor

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Mingun 2023-05-01 01:26:56 +05:00 committed by Mingun
parent 2796833c82
commit 75db73066b
1 changed files with 43 additions and 59 deletions
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102
serde_derive/src/de.rs
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@ -941,9 +941,50 @@ fn deserialize_struct(
let expecting = cattrs.expecting().unwrap_or(&expecting);
let (field_visitor, fields_stmt) = if cattrs.has_flatten() {
deserialize_struct_as_map_visitor(fields, cattrs)
let field_names_idents: Vec<_> = fields
.iter()
.enumerate()
.filter(|&(_, field)| !field.attrs.skip_deserializing() && !field.attrs.flatten())
.map(|(i, field)| {
(
field.attrs.name().deserialize_name(),
field_i(i),
field.attrs.aliases(),
)
})
.collect();
let field_visitor = deserialize_generated_identifier(&field_names_idents, cattrs, false, None);
(field_visitor, None)
} else {
deserialize_struct_as_struct_visitor(fields, cattrs)
let field_names_idents: Vec<_> = fields
.iter()
.enumerate()
.filter(|&(_, field)| !field.attrs.skip_deserializing())
.map(|(i, field)| {
(
field.attrs.name().deserialize_name(),
field_i(i),
field.attrs.aliases(),
)
})
.collect();
let fields_stmt = {
let field_names = field_names_idents
.iter()
.flat_map(|(_, _, aliases)| aliases);
quote_block! {
#[doc(hidden)]
const FIELDS: &'static [&'static str] = &[ #(#field_names),* ];
}
};
let field_visitor = deserialize_generated_identifier(&field_names_idents, cattrs, false, None);
(field_visitor, Some(fields_stmt))
};
let field_visitor = Stmts(field_visitor);
let fields_stmt = fields_stmt.map(Stmts);
@ -2424,63 +2465,6 @@ fn deserialize_identifier(
}
}
fn deserialize_struct_as_struct_visitor(
fields: &[Field],
cattrs: &attr::Container,
) -> (Fragment, Option<Fragment>) {
assert!(!cattrs.has_flatten());
let field_names_idents: Vec<_> = fields
.iter()
.enumerate()
.filter(|&(_, field)| !field.attrs.skip_deserializing())
.map(|(i, field)| {
(
field.attrs.name().deserialize_name(),
field_i(i),
field.attrs.aliases(),
)
})
.collect();
let fields_stmt = {
let field_names = field_names_idents
.iter()
.flat_map(|(_, _, aliases)| aliases);
quote_block! {
#[doc(hidden)]
const FIELDS: &'static [&'static str] = &[ #(#field_names),* ];
}
};
let field_visitor = deserialize_generated_identifier(&field_names_idents, cattrs, false, None);
(field_visitor, Some(fields_stmt))
}
fn deserialize_struct_as_map_visitor(
fields: &[Field],
cattrs: &attr::Container,
) -> (Fragment, Option<Fragment>) {
let field_names_idents: Vec<_> = fields
.iter()
.enumerate()
.filter(|&(_, field)| !field.attrs.skip_deserializing() && !field.attrs.flatten())
.map(|(i, field)| {
(
field.attrs.name().deserialize_name(),
field_i(i),
field.attrs.aliases(),
)
})
.collect();
let field_visitor = deserialize_generated_identifier(&field_names_idents, cattrs, false, None);
(field_visitor, None)
}
fn deserialize_map(
struct_path: &TokenStream,
params: &Parameters,