yaxpeax_arch

Trait Reader

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pub trait Reader<Address, Item> {
    // Required methods
    fn next(&mut self) -> Result<Item, ReadError>;
    fn next_n(&mut self, buf: &mut [Item]) -> Result<(), ReadError>;
    fn mark(&mut self);
    fn offset(&mut self) -> Address;
    fn total_offset(&mut self) -> Address;
}
Expand description

a trait defining how Item-sized words are read at Address-positioned offsets into some stream of data. for most uses, crate::U8Reader probably is sufficient. when reading from data sources that aren’t &[u8], Address isn’t a multiple of u8, or Item isn’t a multiple of 8 bits, U8Reader won’t be sufficient.

Required Methods§

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fn next(&mut self) -> Result<Item, ReadError>

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fn next_n(&mut self, buf: &mut [Item]) -> Result<(), ReadError>

read buf-many items from this reader in bulk. if Reader cannot read buf-many items, return ReadError::ExhaustedInput.

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fn mark(&mut self)

mark the current position as where to measure offset against.

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fn offset(&mut self) -> Address

the difference, in Address, between the current Reader position and its last mark. when created, a Reader’s initial position is marked, so creating a Reader and immediately calling offset() must return Address::zero().

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fn total_offset(&mut self) -> Address

the difference, in Address, between the current Reader position and the initial offset when constructed.

Implementors§