view rust/hg-core/src/operations/mod.rs @ 44974:a46e36b82461

hg-core: add Operation interface for high-level hg operations

A distinction is made between operations and commands.
An operation is a high-level function of mercurial whereas a command is what is exposed by the cli.
A single command can use several operations to achieve its goal.

Differential Revision: https://phab.mercurial-scm.org/D8608

/// An interface for high-level hg operations.
///
/// A distinction is made between operation and commands.
/// An operation is what can be done whereas a command is what is exposed by
/// the cli. A single command can use several operations to achieve its goal.
pub trait Operation<T> {
    type Error;
    fn run(&self) -> Result<T, Self::Error>;
}