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34 lines
772 B
Rust
34 lines
772 B
Rust
//! The trait implemented by console structures.
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use core::fmt;
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/// Trait allowing a structure to be used as a console.
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pub trait Console: Write {}
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/// Trait allowing to write to an object.
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pub trait Write {
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/// Write a single character.
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fn write_char(&self, c: char);
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/// Write a Rust format string.
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fn write_fmt(&self, args: fmt::Arguments) -> fmt::Result;
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/// Block until the last buffered character has been consumed.
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fn flush(&self);
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}
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/// A Dummy Console.
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///
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/// The DummyConsole implement the [`Console`] trait, and do nothing.
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pub struct DummyConsole;
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impl Write for DummyConsole {
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fn write_char(&self, _c: char) {}
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fn write_fmt(&self, _args: fmt::Arguments) -> fmt::Result {
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Ok(())
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}
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fn flush(&self) {}
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}
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