Mercurial > public > mercurial-scm > hg
view rust/hg-core/src/operations/mod.rs @ 46135:dca9cb99971c
rust: replace most "operation" structs with functions
The hg-core crate has a partially-formed concept of "operation",
represented as structs with constructors and a `run` method.
Each struct?s contructor takes different parameters,
and each `run` has a different return type.
Constructors typically don?t do much more than store parameters
for `run` to access them.
There was a comment about adding an `Operation` trait
when the language supports expressing something so general,
but it?s hard to imagine how operations with such different APIs
could be used in a generic context.
This commit starts removing the concept of "operation",
since those are pretty much just functions.
Differential Revision: https://phab.mercurial-scm.org/D9595
author | Simon Sapin <simon.sapin@octobus.net> |
---|---|
date | Mon, 14 Dec 2020 14:59:23 +0100 |
parents | 522ec3dc44b9 |
children | 3e2d539d0d1a |
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//! A distinction is made between operations 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. mod cat; mod debugdata; mod dirstate_status; mod find_root; mod list_tracked_files; pub use cat::{cat, CatRevError, CatRevErrorKind}; pub use debugdata::{ debug_data, DebugDataError, DebugDataErrorKind, DebugDataKind, }; pub use find_root::{ find_root, find_root_from_path, FindRootError, FindRootErrorKind, }; pub use list_tracked_files::{ list_rev_tracked_files, FilesForRev, ListRevTrackedFilesError, ListRevTrackedFilesErrorKind, }; pub use list_tracked_files::{ Dirstate, ListDirstateTrackedFilesError, ListDirstateTrackedFilesErrorKind, };