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This commit is contained in:
est31 2017-05-03 17:11:34 +02:00
parent 78d4ef1992
commit 6e46a827b6
1 changed files with 4 additions and 4 deletions
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8
src/utils.rs
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@ -195,15 +195,14 @@ macro_rules! impl_enum_decodable {
( $e:ident, $( $x:ident ),* ) => {
impl<'de> ::serde::de::Deserialize<'de> for $e {
fn deserialize<D>(d: D) -> Result<Self, D::Error>
where D: ::serde::de::Deserializer<'de> {
where D: ::serde::Deserializer<'de> {
use std::ascii::AsciiExt;
use serde::{Deserializer};
use serde::de::{Error, Visitor};
use std::marker::PhantomData;
use std::fmt;
struct StringOnly<T>(PhantomData<T>);
impl<'de, T> Visitor<'de> for StringOnly<T>
where T: Deserializer<'de> {
where T: ::serde::Deserializer<'de> {
type Value = String;
fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter.write_str("string")
@ -218,7 +217,8 @@ macro_rules! impl_enum_decodable {
return Ok($e::$x);
}
)*
Err(<D as Deserializer<'de>>::Error::custom("Bad variant"))
static ALLOWED: &'static[&str] = &[$(stringify!($x),)*];
Err(D::Error::unknown_variant(&s, ALLOWED))
}
}