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Refactor default_value to use if-let

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This commit is contained in:
Hugo Duncan
2015-02-20 13:59:14 -05:00
parent b6fc68c030
commit c5a35e388c
1 changed files with 18 additions and 18 deletions
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serde2/serde2_macros/src/lib.rs
+18 -18
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@@ -6,6 +6,7 @@ extern crate rustc;
use syntax::ast::{
Ident,
MetaItem,
MetaItem_,
Item,
Expr,
MutMutable,
@@ -854,24 +855,23 @@ fn declare_map_field_deserializer(
fn default_value(field: &ast::StructField) -> bool {
field.node.attrs.iter()
.any(|sa|
match &sa.node.value.node {
&ast::MetaItem_::MetaList(ref n, ref vals) => {
if n == &"serde" {
vals.iter()
.map(|mi|
match &mi.node {
&ast::MetaItem_::MetaWord(ref n) => {
n == &"default"
},
_ => false
})
.any(|x| x)
} else {
false
}
},
_ => false
} )
if let MetaItem_::MetaList(ref n, ref vals) = sa.node.value.node {
if n == &"serde" {
vals.iter()
.map(|mi|
if let MetaItem_::MetaWord(ref n) = mi.node {
n == &"default"
} else {
false
})
.any(|x| x)
} else {
false
}
}
else {
false
})
}
fn declare_visit_map(