Trait rustc_serialize::Decodable[][src]

pub trait Decodable: Sized {
    fn decode<D: Decoder>(d: &mut D) -> Result<Self, D::Error>;
}

Trait for deserializing a type.

This can be implemented for custom data types to allow them to be decoded with Decoder implementations. Most of Rust's built-in or standard data types (like i32 and Vec<T>) have Decodable implementations provided by this module.

Note that, in general, you should let the compiler implement this for you by using the derive(RustcDecodable) attribute.

Examples

extern crate rustc_serialize;

#[derive(RustcDecodable)]
struct Point {
    x: i32,
    y: i32,
}

This generates code equivalent to:

extern crate rustc_serialize;
use rustc_serialize::Decodable;
use rustc_serialize::Decoder;

struct Point {
    x: i32,
    y: i32,
}

impl Decodable for Point {
    fn decode<D: Decoder>(d: &mut D) -> Result<Point, D::Error> {
        d.read_struct("Point", 2, |d| {
            let x = try!(d.read_struct_field("x", 0, |d| { d.read_i32() }));
            let y = try!(d.read_struct_field("y", 1, |d| { d.read_i32() }));
            Ok(Point{ x: x, y: y })
        })
    }
}

Required Methods

Deserialize a value using a Decoder.

Implementations on Foreign Types

impl Decodable for usize
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impl Decodable for u8
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impl Decodable for u16
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impl Decodable for u32
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impl Decodable for u64
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impl Decodable for isize
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impl Decodable for i8
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impl Decodable for i16
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impl Decodable for i32
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impl Decodable for i64
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impl Decodable for String
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impl Decodable for f32
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impl Decodable for f64
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impl Decodable for bool
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impl Decodable for char
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impl Decodable for ()
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impl<T: Decodable> Decodable for Box<T>
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impl<T: Decodable> Decodable for Box<[T]>
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impl<T: Decodable> Decodable for Rc<T>
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impl<'a, T: ?Sized> Decodable for Cow<'a, T> where
    T: ToOwned,
    T::Owned: Decodable
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impl<T: Decodable> Decodable for Vec<T>
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impl<T: Decodable> Decodable for Option<T>
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impl<T: Decodable, E: Decodable> Decodable for Result<T, E>
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impl<T> Decodable for PhantomData<T>
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impl<T0: Decodable, T1: Decodable, T2: Decodable, T3: Decodable, T4: Decodable, T5: Decodable, T6: Decodable, T7: Decodable, T8: Decodable, T9: Decodable, T10: Decodable, T11: Decodable> Decodable for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11)
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impl<T1: Decodable, T2: Decodable, T3: Decodable, T4: Decodable, T5: Decodable, T6: Decodable, T7: Decodable, T8: Decodable, T9: Decodable, T10: Decodable, T11: Decodable> Decodable for (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11)
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impl<T2: Decodable, T3: Decodable, T4: Decodable, T5: Decodable, T6: Decodable, T7: Decodable, T8: Decodable, T9: Decodable, T10: Decodable, T11: Decodable> Decodable for (T2, T3, T4, T5, T6, T7, T8, T9, T10, T11)
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impl<T3: Decodable, T4: Decodable, T5: Decodable, T6: Decodable, T7: Decodable, T8: Decodable, T9: Decodable, T10: Decodable, T11: Decodable> Decodable for (T3, T4, T5, T6, T7, T8, T9, T10, T11)
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impl<T4: Decodable, T5: Decodable, T6: Decodable, T7: Decodable, T8: Decodable, T9: Decodable, T10: Decodable, T11: Decodable> Decodable for (T4, T5, T6, T7, T8, T9, T10, T11)
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impl<T5: Decodable, T6: Decodable, T7: Decodable, T8: Decodable, T9: Decodable, T10: Decodable, T11: Decodable> Decodable for (T5, T6, T7, T8, T9, T10, T11)
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impl<T6: Decodable, T7: Decodable, T8: Decodable, T9: Decodable, T10: Decodable, T11: Decodable> Decodable for (T6, T7, T8, T9, T10, T11)
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impl<T7: Decodable, T8: Decodable, T9: Decodable, T10: Decodable, T11: Decodable> Decodable for (T7, T8, T9, T10, T11)
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impl<T8: Decodable, T9: Decodable, T10: Decodable, T11: Decodable> Decodable for (T8, T9, T10, T11)
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impl<T9: Decodable, T10: Decodable, T11: Decodable> Decodable for (T9, T10, T11)
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impl<T10: Decodable, T11: Decodable> Decodable for (T10, T11)
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impl<T11: Decodable> Decodable for (T11,)
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impl<T: Decodable> Decodable for [T; 32]
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impl<T: Decodable> Decodable for [T; 31]
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impl<T: Decodable> Decodable for [T; 30]
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impl<T: Decodable> Decodable for [T; 29]
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impl<T: Decodable> Decodable for [T; 28]
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impl<T: Decodable> Decodable for [T; 27]
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impl<T: Decodable> Decodable for [T; 26]
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impl<T: Decodable> Decodable for [T; 25]
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impl<T: Decodable> Decodable for [T; 24]
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impl<T: Decodable> Decodable for [T; 23]
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impl<T: Decodable> Decodable for [T; 22]
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impl<T: Decodable> Decodable for [T; 21]
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impl<T: Decodable> Decodable for [T; 20]
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impl<T: Decodable> Decodable for [T; 19]
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impl<T: Decodable> Decodable for [T; 18]
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impl<T: Decodable> Decodable for [T; 17]
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impl<T: Decodable> Decodable for [T; 16]
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impl<T: Decodable> Decodable for [T; 15]
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impl<T: Decodable> Decodable for [T; 14]
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impl<T: Decodable> Decodable for [T; 13]
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impl<T: Decodable> Decodable for [T; 12]
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impl<T: Decodable> Decodable for [T; 11]
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impl<T: Decodable> Decodable for [T; 10]
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impl<T: Decodable> Decodable for [T; 9]
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impl<T: Decodable> Decodable for [T; 8]
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impl<T: Decodable> Decodable for [T; 7]
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impl<T: Decodable> Decodable for [T; 6]
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impl<T: Decodable> Decodable for [T; 5]
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impl<T: Decodable> Decodable for [T; 4]
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impl<T: Decodable> Decodable for [T; 3]
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impl<T: Decodable> Decodable for [T; 2]
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impl<T: Decodable> Decodable for [T; 1]
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impl<T: Decodable> Decodable for [T; 0]
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impl Decodable for PathBuf
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impl<T: Decodable + Copy> Decodable for Cell<T>
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impl<T: Decodable> Decodable for RefCell<T>
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impl<T: Decodable + Send + Sync> Decodable for Arc<T>
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impl<T: Decodable> Decodable for LinkedList<T>
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impl<T: Decodable> Decodable for VecDeque<T>
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impl<K: Decodable + Ord, V: Decodable> Decodable for BTreeMap<K, V>
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impl<T: Decodable + Ord> Decodable for BTreeSet<T>
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impl<K, V> Decodable for HashMap<K, V> where
    K: Decodable + Hash + Eq,
    V: Decodable
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impl<T> Decodable for HashSet<T> where
    T: Decodable + Hash + Eq
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Implementors