Trait sawp::parser::Parse[−][src]

pub trait Parse<'a>: Protocol<'a> {
    fn parse(
        &self, 
        input: &'a [u8], 
        direction: Direction
    ) -> Result<(&'a [u8], Option<Self::Message>)>;
}

Trait for parsing message from an input byte stream.

Required methods

fn parse(
    &self,
    input: &'a [u8],
    direction: Direction
) -> Result<(&'a [u8], Option<Self::Message>)>[src]

Returns a tuple containing the remaining unparsed data and the parsed Message.

A return value of Result::Ok indicates that the parser has made progress and should only be used when the remaining unparsed data is less than the input.

A return value of Result::Err indicates that no progress was made and the user may call the parse function again with the same input in some scenarios:

  • ErrorKind::Incomplete: call parse once more input data is available.

Consequently, Result::Ok(None) is used to indicate the parser made progress but needs more data to return a complete Message. Internal buffering may occur depending on the implementation.

Result::Err(ErrorKind::Incomplete(_)) must be used instead of Result::Ok(None) when no progress was made parsing the input.

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Implementors

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