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-rw-r--r--src/decoder/serde.rs29
1 files changed, 24 insertions, 5 deletions
diff --git a/src/decoder/serde.rs b/src/decoder/serde.rs
index be4e3bc..90738d1 100644
--- a/src/decoder/serde.rs
+++ b/src/decoder/serde.rs
@@ -346,12 +346,20 @@ impl de::Error for DecodeError {
}
}
+struct MapVisitor<'a, I> {
+ iter: I,
+ de: &'a mut Decoder,
+ key: Option<String>,
+ value: Option<Value>,
+}
+
impl<'a, I> MapVisitor<'a, I> {
fn put_value_back(&mut self, v: Value) {
- *self.toml = self.toml.take().or_else(|| {
+ self.de.toml = self.de.toml.take().or_else(|| {
Some(Value::Table(BTreeMap::new()))
});
- match self.toml.as_mut().unwrap() {
+
+ match self.de.toml.as_mut().unwrap() {
&mut Value::Table(ref mut t) => {
t.insert(self.key.take().unwrap(), v);
},
@@ -369,8 +377,9 @@ impl<'a, I> de::MapVisitor for MapVisitor<'a, I>
where K: de::Deserialize
{
while let Some((k, v)) = self.iter.next() {
- self.key = Some(k.clone());
- let mut dec = Decoder::new(Value::String(k));
+ let mut dec = self.de.sub_decoder(Some(Value::String(k.clone())), &k);
+ self.key = Some(k);
+
match de::Deserialize::deserialize(&mut dec) {
Ok(val) => {
self.value = Some(v);
@@ -382,6 +391,7 @@ impl<'a, I> de::MapVisitor for MapVisitor<'a, I>
Err(DecodeError {kind: DecodeErrorKind::UnknownField, ..}) => {
self.put_value_back(v);
}
+
Err(e) => return Err(e),
}
}
@@ -393,7 +403,16 @@ impl<'a, I> de::MapVisitor for MapVisitor<'a, I>
{
match self.value.take() {
Some(t) => {
- let mut dec = Decoder::new(t);
+ let mut dec = {
+ // Borrowing the key here because Rust doesn't have
+ // non-lexical borrows yet.
+ let key = match self.key {
+ Some(ref key) => &**key,
+ None => ""
+ };
+
+ self.de.sub_decoder(Some(t), key)
+ };
let v = try!(de::Deserialize::deserialize(&mut dec));
if let Some(t) = dec.toml {
self.put_value_back(t);