Trait encode_unicode::U8UtfExt[−][src]

pub trait U8UtfExt {
    fn extra_utf8_bytes(self) -> Result<usize, InvalidUtf8FirstByte>;

    fn extra_utf8_bytes_unchecked(self) -> usize;
}

Methods for working with u8s as UTF-8 bytes.

Required methods

fn extra_utf8_bytes(self) -> Result<usize, InvalidUtf8FirstByte>[src]

How many more bytes will you need to complete this codepoint?

Errors

An error is returned if the byte is not a valid start of an UTF-8 codepoint:

  • 128..192: ContinuationByte
  • 248..: TooLongSequence

Values in 244..248 represent a too high codepoint, but do not cause an error.

fn extra_utf8_bytes_unchecked(self) -> usize[src]

How many more bytes will you need to complete this codepoint?

This function assumes that the byte is a valid UTF-8 start, and might return any value otherwise. (but the function is pure and safe to call with any value).

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Implementations on Foreign Types

impl U8UtfExt for u8[src]

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Implementors

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