Trait Input

pub trait Input: Clone {
    // Required methods
    fn cur(&mut self) -> Option<char>;
    fn peek(&mut self) -> Option<char>;
    fn peek_ahead(&mut self) -> Option<char>;
    fn bump(&mut self);
    fn is_at_start(&self) -> bool;
    fn cur_pos(&mut self) -> BytePos;
    fn last_pos(&self) -> BytePos;
    fn slice(&mut self, start: BytePos, end: BytePos) -> &str;
    fn uncons_while<F>(&mut self, f: F) -> &str
       where F: FnMut(char) -> bool;
    fn find<F>(&mut self, f: F) -> Option<BytePos>
       where F: FnMut(char) -> bool;
    fn reset_to(&mut self, to: BytePos);
    fn is_str(&self, s: &str) -> bool;

    // Provided methods
    fn cur_as_ascii(&mut self) -> Option<u8> { ... }
    fn is_byte(&mut self, c: u8) -> bool { ... }
    fn eat_byte(&mut self, c: u8) -> bool { ... }
}

Required Methods

fn cur(&mut self) -> Option<char>

fn peek(&mut self) -> Option<char>

fn peek_ahead(&mut self) -> Option<char>

fn bump(&mut self)

fn is_at_start(&self) -> bool

fn cur_pos(&mut self) -> BytePos

fn last_pos(&self) -> BytePos

fn slice(&mut self, start: BytePos, end: BytePos) -> &str

fn uncons_while<F>(&mut self, f: F) -> &str

where F: FnMut(char) -> bool,

Takes items from stream, testing each one with predicate. returns the range of items which passed predicate.

fn find<F>(&mut self, f: F) -> Option<BytePos>

where F: FnMut(char) -> bool,

This method modifies [last_pos()] and [cur_pos()].

fn reset_to(&mut self, to: BytePos)

fn is_str(&self, s: &str) -> bool

Implementors can override the method to make it faster.

s must be ASCII only.

Provided Methods

fn cur_as_ascii(&mut self) -> Option<u8>

Returns None if it’s end of input or current character is not an ascii character.

fn is_byte(&mut self, c: u8) -> bool

Implementors can override the method to make it faster.

c must be ASCII.

fn eat_byte(&mut self, c: u8) -> bool

Implementors can override the method to make it faster.

c must be ASCII.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<'a> Input for StringInput<'a>