Trait binn_ir::value::Decoder[−][src]

pub trait Decoder: Read + Sized {
    fn decode(&mut self) -> Result<Option<Value>> { ... }

    fn decode_null(&mut self) -> Result<Option<()>> { ... }

    fn decode_bool(&mut self) -> Result<Option<bool>> { ... }

    fn decode_u8(&mut self) -> Result<Option<u8>> { ... }

    fn decode_i8(&mut self) -> Result<Option<i8>> { ... }

    fn decode_u16(&mut self) -> Result<Option<u16>> { ... }

    fn decode_i16(&mut self) -> Result<Option<i16>> { ... }

    fn decode_u32(&mut self) -> Result<Option<u32>> { ... }

    fn decode_i32(&mut self) -> Result<Option<i32>> { ... }

    fn decode_u64(&mut self) -> Result<Option<u64>> { ... }

    fn decode_i64(&mut self) -> Result<Option<i64>> { ... }

    fn decode_float(&mut self) -> Result<Option<f32>> { ... }

    fn decode_double(&mut self) -> Result<Option<f64>> { ... }

    fn decode_text(&mut self) -> Result<Option<String>> { ... }

    fn decode_date_time(&mut self) -> Result<Option<String>> { ... }

    fn decode_date(&mut self) -> Result<Option<String>> { ... }

    fn decode_time(&mut self) -> Result<Option<String>> { ... }

    fn decode_decimal_str(&mut self) -> Result<Option<String>> { ... }

    fn decode_blob(&mut self) -> Result<Option<Vec<u8>>> { ... }

    fn decode_list(&mut self) -> Result<Option<Vec<Value>>> { ... }

    fn decode_map(&mut self) -> Result<Option<BTreeMap<i32, Value>>> { ... }

    fn decode_object(&mut self) -> Result<Option<HashMap<String, Value>>> { ... }
}

Decoder

Usage

Decoding any values

You can use ::decode() and a match to filter values. This function will hand you the values after finishing decoding process.

Decoding desired values

You can use ::decode_*(). However, please note that: if an un-expected value is detected, the whole decoding operation might be broken. It's because those functions just decode the header of a value, and stop if not matched. So at that point, data stream might already be broken.

In contrast, with ::decode(), when you expect an Object but get a List, you can still continue decoding next values.

Notes

  • If a ::decode*() function returns an Ok(None), it means there's no more data to decode.
  • Default implementors are copied from Read's.

Provided Methods

Decodes a value

Decodes a Null

Decodes a boolean value

Decodes a u8 value

Decodes an i8 value

Decodes a u16 value

Decodes an i16 value

Decodes a u32 value

Decodes an i32 value

Decodes a u64 value

Decodes an i64 value

Decodes a Float value

Decodes a Double value

Decodes a Text

Decodes a DateTime

Decodes a Date

Decodes a Time

Decodes a DecimalStr

Decodes a Blob

Decodes a List

Decodes a Map

Decodes an Object

Implementations on Foreign Types

impl Decoder for File
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impl<'a> Decoder for &'a File
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impl<R: Read> Decoder for BufReader<R>
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impl<T> Decoder for Cursor<T> where
    T: AsRef<[u8]>, 
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impl<'a, R: Read + ?Sized> Decoder for &'a mut R
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impl<R: Read + ?Sized> Decoder for Box<R>
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impl<'a> Decoder for &'a [u8]
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impl Decoder for Empty
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impl Decoder for Repeat
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impl Decoder for Stdin
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impl<'a> Decoder for StdinLock<'a>
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impl<T: Read, U: Read> Decoder for Chain<T, U>
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impl<T: Read> Decoder for Take<T>
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impl Decoder for TcpStream
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impl<'a> Decoder for &'a TcpStream
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impl Decoder for ChildStdout
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impl Decoder for ChildStderr
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impl Decoder for UnixStream
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impl<'a> Decoder for &'a UnixStream
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Implementors