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Mark serde field attributes as used

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Prevents unused attribute warnings in code that marks fields with
field level #[serde] attributes.
This commit is contained in:
Hugo Duncan
2015-03-19 11:04:08 -04:00
parent 8821421357
commit 3e63d34c00
1 changed files with 3 additions and 0 deletions
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serde_macros/src/field.rs
+3
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@@ -1,4 +1,5 @@
use syntax::ast;
use syntax::attr;
use syntax::ext::base::ExtCtxt;
use syntax::ptr::P;
@@ -15,6 +16,7 @@ fn field_alias(field: &ast::StructField) -> Option<&ast::Lit> {
})
.and_then(|sa| {
if let ast::MetaList(_, ref vals) = sa.node.value.node {
attr::mark_used(&sa);
vals.iter().fold(None, |v, mi| {
if let ast::MetaNameValue(ref n, ref lit) = mi.node {
if n == &"alias" {
@@ -61,6 +63,7 @@ pub fn default_value(field: &ast::StructField) -> bool {
.any(|sa| {
if let ast::MetaItem_::MetaList(ref n, ref vals) = sa.node.value.node {
if n == &"serde" {
attr::mark_used(&sa);
vals.iter()
.map(|mi|
if let ast::MetaItem_::MetaWord(ref n) = mi.node {