Merge remote-tracking branch 'remotes/origin/master' into nonzero

# Conflicts:
#	serde/src/de/impls.rs

serde/src/de/impls.rs

@@ -11,15 +11,18 @@ use num::FromPrimitive;
 
 #[cfg(feature = "nightly")]
 use core::nonzero::{NonZero, Zeroable};
+
 #[cfg(feature = "nightly")]
 use std::num::Zero;
 
 use de::{
     Deserialize,
     Deserializer,
+    EnumVisitor,
     Error,
     MapVisitor,
     SeqVisitor,
+    VariantVisitor,
     Visitor,
 };
 
@@ -53,7 +56,7 @@ impl Deserialize for () {
 
 ///////////////////////////////////////////////////////////////////////////////
 
-struct BoolVisitor;
+pub struct BoolVisitor;
 
 impl Visitor for BoolVisitor {
     type Value = bool;
@@ -873,6 +876,7 @@ impl<'a, T: ?Sized> Deserialize for Cow<'a, T> where T: ToOwned, T::Owned: Deser
 
 ///////////////////////////////////////////////////////////////////////////////
 
+#[cfg(nightly)]
 impl<T> Deserialize for NonZero<T> where T: Deserialize + PartialEq + Zeroable + Zero {
     fn deserialize<D>(deserializer: &mut D) -> Result<NonZero<T>, D::Error> where D: Deserializer {
         let value = try!(Deserialize::deserialize(deserializer));
@@ -885,3 +889,129 @@ impl<T> Deserialize for NonZero<T> where T: Deserialize + PartialEq + Zeroable +
     }
 }
 
+///////////////////////////////////////////////////////////////////////////////
+
+impl<T, E> Deserialize for Result<T, E> where T: Deserialize, E: Deserialize {
+    fn deserialize<D>(deserializer: &mut D) -> Result<Result<T, E>, D::Error>
+                      where D: Deserializer {
+        enum Field {
+            Field0,
+            Field1,
+        }
+
+        impl Deserialize for Field {
+            #[inline]
+            fn deserialize<D>(deserializer: &mut D) -> Result<Field, D::Error>
+                              where D: Deserializer {
+                struct FieldVisitor<D> {
+                    phantom: PhantomData<D>,
+                }
+
+                impl<D> ::de::Visitor for FieldVisitor<D> where D: Deserializer {
+                    type Value = Field;
+
+                    fn visit_str<E>(&mut self, value: &str) -> Result<Field, E> where E: Error {
+                        match value {
+                            "Ok" => Ok(Field::Field0),
+                            "Err" => Ok(Field::Field1),
+                            _ => Err(Error::unknown_field_error(value)),
+                        }
+                    }
+
+                    fn visit_bytes<E>(&mut self, value: &[u8]) -> Result<Field, E> where E: Error {
+                        match str::from_utf8(value) {
+                            Ok(s) => self.visit_str(s),
+                            _ => Err(Error::syntax_error()),
+                        }
+                    }
+                }
+
+                deserializer.visit(FieldVisitor::<D> {
+                    phantom: PhantomData,
+                })
+            }
+        }
+
+        struct Visitor<D, T, E>(PhantomData<D>, PhantomData<T>, PhantomData<E>)
+                                where D: Deserializer, T: Deserialize, E: Deserialize;
+
+        impl<D, T, E> EnumVisitor for Visitor<D, T, E> where D: Deserializer,
+                                                             T: Deserialize,
+                                                             E: Deserialize {
+            type Value = Result<T, E>;
+
+            fn visit<V>(&mut self, mut visitor: V) -> Result<Result<T, E>, V::Error>
+                        where V: VariantVisitor {
+                match match visitor.visit_variant() {
+                          Ok(val) => val,
+                          Err(err) => return Err(From::from(err)),
+                      } {
+                    Field::Field0 => {
+                        struct Visitor<D, T, E>(PhantomData<D>, PhantomData<T>, PhantomData<E>)
+                                                where D: Deserializer,
+                                                      T: Deserialize,
+                                                      E: Deserialize;
+                        impl <D, T, E> ::de::Visitor for Visitor<D, T, E> where D: Deserializer,
+                                                                                T: Deserialize,
+                                                                                E: Deserialize {
+                            type Value = Result<T, E>;
+
+                            fn visit_seq<V>(&mut self, mut visitor: V)
+                                            -> Result<Result<T, E>, V::Error> where V: SeqVisitor {
+                                let field0 = match match visitor.visit() {
+                                          Ok(val) => val,
+                                          Err(err) => return Err(From::from(err)),
+                                      } {
+                                    Some(value) => value,
+                                    None => return Err(Error::end_of_stream_error()),
+                                };
+                                match visitor.end() {
+                                    Ok(val) => val,
+                                    Err(err) => return Err(From::from(err)),
+                                };
+                                Ok(Result::Ok(field0))
+                            }
+                        }
+                        visitor.visit_seq(Visitor::<D, T, E>(PhantomData,
+                                                             PhantomData,
+                                                             PhantomData))
+                    }
+                    Field::Field1 => {
+                        struct Visitor<D, T, E>(PhantomData<D>, PhantomData<T>, PhantomData<E>)
+                                                where D: Deserializer,
+                                                      T: Deserialize,
+                                                      E: Deserialize;
+                        impl <D, T, E> ::de::Visitor for Visitor<D, T, E> where D: Deserializer,
+                                                                                T: Deserialize,
+                                                                                E: Deserialize {
+                            type Value = Result<T, E>;
+
+                            fn visit_seq<V>(&mut self, mut visitor: V)
+                                            -> Result<Result<T, E>, V::Error> where V: SeqVisitor {
+                                let field0 = match match visitor.visit() {
+                                          Ok(val) => val,
+                                          Err(err) => return Err(From::from(err)),
+                                      } {
+                                    Some(value) => value,
+                                    None => return Err(Error::end_of_stream_error()),
+                                };
+                                match visitor.end() {
+                                    Ok(val) => val,
+                                    Err(err) => return Err(From::from(err)),
+                                };
+                                Ok(Result::Err(field0))
+                            }
+                        }
+                        visitor.visit_seq(Visitor::<D, T, E>(PhantomData,
+                                                             PhantomData,
+                                                             PhantomData))
+                    }
+                }
+            }
+        }
+
+        deserializer.visit_enum("Result",
+                                Visitor::<D, T, E>(PhantomData, PhantomData, PhantomData))
+    }
+}
+

serde/src/ser/impls.rs

@@ -1,6 +1,7 @@
 use std::borrow::Cow;
 use std::collections::{BTreeMap, BTreeSet, HashMap, HashSet};
 use std::hash::Hash;
+use std::marker::PhantomData;
 use std::path;
 use std::rc::Rc;
 use std::sync::Arc;
@@ -533,6 +534,95 @@ impl<'a, T: ?Sized> Serialize for Cow<'a, T> where T: Serialize + ToOwned, {
 
 ///////////////////////////////////////////////////////////////////////////////
 
+impl<T, E> Serialize for Result<T, E> where T: Serialize, E: Serialize {
+    fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error> where S: Serializer {
+        match *self {
+            Result::Ok(ref field0) => {
+                struct Visitor<'a, T, E> where T: Serialize + 'a, E: Serialize + 'a {
+                    state: usize,
+                    value: (&'a T,),
+                    _structure_ty: PhantomData<&'a Result<T, E>>,
+                }
+
+                impl<'a, T, E> SeqVisitor for Visitor<'a, T, E> where T: Serialize + 'a,
+                                                                      E: Serialize + 'a {
+                    #[inline]
+                    fn visit<S>(&mut self, serializer: &mut S) -> Result<Option<()>, S::Error>
+                                where S: Serializer {
+                        match self.state {
+                            0 => {
+                                self.state += 1;
+                                let v = match serializer.visit_seq_elt(&self.value.0) {
+                                    Ok(val) => val,
+                                    Err(err) => return Err(From::from(err)),
+                                };
+                                Ok(Some(v))
+                            }
+                            _ => Ok(None),
+                        }
+                    }
+
+                    #[inline]
+                    fn len(&self) -> Option<usize> {
+                        Some(1)
+                    }
+                }
+
+                let field0: &T = field0;
+                let data: PhantomData<&Result<&T,E>> = PhantomData;
+                let visitor = Visitor {
+                    value: (&field0,),
+                    state: 0,
+                    _structure_ty: data
+                };
+                serializer.visit_enum_seq("Result", "Ok", visitor)
+            }
+            Result::Err(ref field0) => {
+                struct Visitor<'a, T, E> where T: Serialize + 'a, E: Serialize + 'a {
+                    state: usize,
+                    value: (&'a E,),
+                    _structure_ty: PhantomData<&'a Result<T, E>>,
+                }
+
+                impl<'a, T, E> SeqVisitor for Visitor<'a, T, E> where T: Serialize + 'a,
+                                                                      E: Serialize + 'a {
+                    #[inline]
+                    fn visit<S>(&mut self, serializer: &mut S) -> Result<Option<()>, S::Error>
+                                where S: Serializer {
+                        match self.state {
+                            0 => {
+                                self.state += 1;
+                                let v = match serializer.visit_seq_elt(&self.value.0) {
+                                    Ok(val) => val,
+                                    Err(err) => return Err(From::from(err)),
+                                };
+                                Ok(Some(v))
+                            }
+                            _ => Ok(None),
+                        }
+                    }
+
+                    #[inline]
+                    fn len(&self) -> Option<usize> {
+                        Some(1)
+                    }
+                }
+
+                let field0: &E = field0;
+                let data: PhantomData<&Result<T,&E>> = PhantomData;
+                let visitor = Visitor {
+                    value: (&field0,),
+                    state: 0,
+                    _structure_ty: data
+                };
+                serializer.visit_enum_seq("Result", "Err", visitor)
+            }
+        }
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
 impl Serialize for path::Path {
     fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error>
         where S: Serializer,
@@ -549,9 +639,9 @@ impl Serialize for path::PathBuf {
     }
 }
 
+#[cfg(nightly)]
 impl<T> Serialize for NonZero<T> where T: Serialize + Zeroable {
     fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error> where S: Serializer {
         (**self).serialize(serializer)
     }
 }
-