# Struct rustc_serialize::json::Decoder [−] [src]

    pub struct Decoder { /* fields omitted */ }

A structure to decode JSON to values in rust.

## Methods

### `impl Decoder`
[src]

#### `pub fn new(json: Json) -> Decoder`
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Creates a new decoder instance for decoding the specified JSON value.

## Trait Implementations

### `impl Decoder for Decoder`
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#### `type Error = DecoderError`

The error type for method results.

#### `fn read_nil(&mut self) -> DecodeResult<()>`
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Read a nil value.

#### `fn read_usize(&mut self) -> DecodeResult<usize>`
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Read a usize value.

#### `fn read_u8(&mut self) -> DecodeResult<u8>`
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Read a u8 value.

#### `fn read_u16(&mut self) -> DecodeResult<u16>`
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Read a u16 value.

#### `fn read_u32(&mut self) -> DecodeResult<u32>`
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Read a u32 value.

#### `fn read_u64(&mut self) -> DecodeResult<u64>`
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Read a u64 value.

#### `fn read_isize(&mut self) -> DecodeResult<isize>`
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Read a isize value.

#### `fn read_i8(&mut self) -> DecodeResult<i8>`
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Read a i8 value.

#### `fn read_i16(&mut self) -> DecodeResult<i16>`
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Read a i16 value.

#### `fn read_i32(&mut self) -> DecodeResult<i32>`
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Read a i32 value.

#### `fn read_i64(&mut self) -> DecodeResult<i64>`
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Read a i64 value.

#### `fn read_f32(&mut self) -> DecodeResult<f32>`
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Read a f32 value.

#### `fn read_f64(&mut self) -> DecodeResult<f64>`
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Read a f64 value.

#### `fn read_bool(&mut self) -> DecodeResult<bool>`
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Read a bool value.

#### `fn read_char(&mut self) -> DecodeResult<char>`
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Read a char value.

#### `fn read_str(&mut self) -> DecodeResult<String>`
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Read a string value.

#### `fn read_enum<T, F>(&mut self, _name: &str, f: F) -> DecodeResult<T> where
F: FnOnce(&mut Decoder) -> DecodeResult<T>,`
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Read an enumeration value. Read more

#### `fn read_enum_variant<T, F>(&mut self, names: &[&str], f: F) -> DecodeResult<T> where
F: FnMut(&mut Decoder, usize) -> DecodeResult<T>,`
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Read an enumeration value. Read more

#### `fn read_enum_variant_arg<T, F>(&mut self, _idx: usize, f: F) -> DecodeResult<T> where
F: FnOnce(&mut Decoder) -> DecodeResult<T>,`
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Read an unnamed data item for an enumeration variant. Read more

#### `fn read_enum_struct_variant<T, F>(
&mut self,
names: &[&str],
f: F
) -> DecodeResult<T> where
F: FnMut(&mut Decoder, usize) -> DecodeResult<T>,`
[src]

Read an enumeration value. Read more

#### `fn read_enum_struct_variant_field<T, F>(
&mut self,
_name: &str,
idx: usize,
f: F
) -> DecodeResult<T> where
F: FnOnce(&mut Decoder) -> DecodeResult<T>,`
[src]

Read a named data item for an enumeration variant. Read more

#### `fn read_struct<T, F>(
&mut self,
_name: &str,
_len: usize,
f: F
) -> DecodeResult<T> where
F: FnOnce(&mut Decoder) -> DecodeResult<T>,`
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Read an struct value. Read more

#### `fn read_struct_field<T, F>(
&mut self,
name: &str,
_idx: usize,
f: F
) -> DecodeResult<T> where
F: FnOnce(&mut Decoder) -> DecodeResult<T>,`
[src]

Read a field for a struct value. Read more

#### `fn read_tuple<T, F>(&mut self, tuple_len: usize, f: F) -> DecodeResult<T> where
F: FnOnce(&mut Decoder) -> DecodeResult<T>,`
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Read a tuple value. Read more

#### `fn read_tuple_arg<T, F>(&mut self, idx: usize, f: F) -> DecodeResult<T> where
F: FnOnce(&mut Decoder) -> DecodeResult<T>,`
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Read a data item for a tuple. Read more

#### `fn read_tuple_struct<T, F>(
&mut self,
_name: &str,
len: usize,
f: F
) -> DecodeResult<T> where
F: FnOnce(&mut Decoder) -> DecodeResult<T>,`
[src]

Read a tuple struct value. Read more

#### `fn read_tuple_struct_arg<T, F>(&mut self, idx: usize, f: F) -> DecodeResult<T> where
F: FnOnce(&mut Decoder) -> DecodeResult<T>,`
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Read a data item for a tuple struct. Read more

#### `fn read_option<T, F>(&mut self, f: F) -> DecodeResult<T> where
F: FnMut(&mut Decoder, bool) -> DecodeResult<T>,`
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Read an optional value. Read more

#### `fn read_seq<T, F>(&mut self, f: F) -> DecodeResult<T> where
F: FnOnce(&mut Decoder, usize) -> DecodeResult<T>,`
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Read a sequence of values. Read more

#### `fn read_seq_elt<T, F>(&mut self, _idx: usize, f: F) -> DecodeResult<T> where
F: FnOnce(&mut Decoder) -> DecodeResult<T>,`
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Read an element in the sequence. Read more

#### `fn read_map<T, F>(&mut self, f: F) -> DecodeResult<T> where
F: FnOnce(&mut Decoder, usize) -> DecodeResult<T>,`
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Read an associative container (map). Read more

#### `fn read_map_elt_key<T, F>(&mut self, _idx: usize, f: F) -> DecodeResult<T> where
F: FnOnce(&mut Decoder) -> DecodeResult<T>,`
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Read the key for an entry in a map. Read more

#### `fn read_map_elt_val<T, F>(&mut self, _idx: usize, f: F) -> DecodeResult<T> where
F: FnOnce(&mut Decoder) -> DecodeResult<T>,`
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Read the value for an entry in a map. Read more

#### `fn error(&mut self, err: &str) -> DecoderError`
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Record a decoding error. Read more

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