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Make match statements better
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@hi-rustin
hi-rustin committed Mar 3, 2023
1 parent 7e4656a commit 69ed087
Showing 1 changed file with 88 additions and 64 deletions.
152 changes: 88 additions & 64 deletions src/cli/rustup_mode.rs
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Expand Up @@ -128,72 +128,96 @@ pub fn main() -> Result<utils::ExitCode> {
cfg.check_metadata_version()?;

Ok(match matches.subcommand() {
Some(("dump-testament", _)) => common::dump_testament()?,
Some(("show", c)) => match c.subcommand() {
Some(("active-toolchain", m)) => handle_epipe(show_active_toolchain(cfg, m))?,
Some(("home", _)) => handle_epipe(show_rustup_home(cfg))?,
Some(("profile", _)) => handle_epipe(show_profile(cfg))?,
Some(("keys", _)) => handle_epipe(show_keys(cfg))?,
_ => handle_epipe(show(cfg, c))?,
},
Some(("install", m)) => deprecated("toolchain install", cfg, m, update)?,
Some(("update", m)) => update(cfg, m)?,
Some(("check", _)) => check_updates(cfg)?,
Some(("uninstall", m)) => deprecated("toolchain uninstall", cfg, m, toolchain_remove)?,
Some(("default", m)) => default_(cfg, m)?,
Some(("toolchain", c)) => match c.subcommand() {
Some(("install", m)) => update(cfg, m)?,
Some(("list", m)) => handle_epipe(toolchain_list(cfg, m))?,
Some(("link", m)) => toolchain_link(cfg, m)?,
Some(("uninstall", m)) => toolchain_remove(cfg, m)?,
_ => unreachable!(),
},
Some(("target", c)) => match c.subcommand() {
Some(("list", m)) => handle_epipe(target_list(cfg, m))?,
Some(("add", m)) => target_add(cfg, m)?,
Some(("remove", m)) => target_remove(cfg, m)?,
_ => unreachable!(),
},
Some(("component", c)) => match c.subcommand() {
Some(("list", m)) => handle_epipe(component_list(cfg, m))?,
Some(("add", m)) => component_add(cfg, m)?,
Some(("remove", m)) => component_remove(cfg, m)?,
_ => unreachable!(),
},
Some(("override", c)) => match c.subcommand() {
Some(("list", _)) => handle_epipe(common::list_overrides(cfg))?,
Some(("set", m)) => override_add(cfg, m)?,
Some(("unset", m)) => override_remove(cfg, m)?,
_ => unreachable!(),
},
Some(("run", m)) => run(cfg, m)?,
Some(("which", m)) => which(cfg, m)?,
Some(("doc", m)) => doc(cfg, m)?,
Some(("man", m)) => man(cfg, m)?,
Some(("self", c)) => match c.subcommand() {
Some(("update", _)) => self_update::update(cfg)?,
Some(("uninstall", m)) => self_uninstall(m)?,
_ => unreachable!(),
},
Some(("set", c)) => match c.subcommand() {
Some(("default-host", m)) => set_default_host_triple(cfg, m)?,
Some(("profile", m)) => set_profile(cfg, m)?,
Some(("auto-self-update", m)) => set_auto_self_update(cfg, m)?,
Some(s) => match s {
("dump-testament", _) => common::dump_testament()?,
("show", c) => match c.subcommand() {
Some(s) => match s {
("active-toolchain", m) => handle_epipe(show_active_toolchain(cfg, m))?,
("home", _) => handle_epipe(show_rustup_home(cfg))?,
("profile", _) => handle_epipe(show_profile(cfg))?,
("keys", _) => handle_epipe(show_keys(cfg))?,
_ => handle_epipe(show(cfg, c))?,
},
None => unreachable!(),
},
("install", m) => deprecated("toolchain install", cfg, m, update)?,
("update", m) => update(cfg, m)?,
("check", _) => check_updates(cfg)?,
("uninstall", m) => deprecated("toolchain uninstall", cfg, m, toolchain_remove)?,
("default", m) => default_(cfg, m)?,
("toolchain", c) => match c.subcommand() {
Some(s) => match s {
("install", m) => update(cfg, m)?,
("list", m) => handle_epipe(toolchain_list(cfg, m))?,
("link", m) => toolchain_link(cfg, m)?,
("uninstall", m) => toolchain_remove(cfg, m)?,
_ => unreachable!(),
},
None => unreachable!(),
},
("target", c) => match c.subcommand() {
Some(s) => match s {
("list", m) => handle_epipe(target_list(cfg, m))?,
("add", m) => target_add(cfg, m)?,
("remove", m) => target_remove(cfg, m)?,
_ => unreachable!(),
},
None => unreachable!(),
},
("component", c) => match c.subcommand() {
Some(s) => match s {
("list", m) => handle_epipe(component_list(cfg, m))?,
("add", m) => component_add(cfg, m)?,
("remove", m) => component_remove(cfg, m)?,
_ => unreachable!(),
},
None => unreachable!(),
},
("override", c) => match c.subcommand() {
Some(s) => match s {
("list", _) => handle_epipe(common::list_overrides(cfg))?,
("set", m) => override_add(cfg, m)?,
("unset", m) => override_remove(cfg, m)?,
_ => unreachable!(),
},
None => unreachable!(),
},
("run", m) => run(cfg, m)?,
("which", m) => which(cfg, m)?,
("doc", m) => doc(cfg, m)?,
("man", m) => man(cfg, m)?,
("self", c) => match c.subcommand() {
Some(s) => match s {
("update", _) => self_update::update(cfg)?,
("uninstall", m) => self_uninstall(m)?,
_ => unreachable!(),
},
None => unreachable!(),
},
("set", c) => match c.subcommand() {
Some(s) => match s {
("default-host", m) => set_default_host_triple(cfg, m)?,
("profile", m) => set_profile(cfg, m)?,
("auto-self-update", m) => set_auto_self_update(cfg, m)?,
_ => unreachable!(),
},
None => unreachable!(),
},
("completions", c) => {
if let Some(&shell) = c.get_one::<Shell>("shell") {
output_completion_script(
shell,
c.get_one::<CompletionCommand>("command")
.copied()
.unwrap_or(CompletionCommand::Rustup),
)?
} else {
unreachable!()
}
}
_ => unreachable!(),
},
Some(("completions", c)) => {
if let Some(&shell) = c.get_one::<Shell>("shell") {
(output_completion_script(
shell,
c.get_one::<CompletionCommand>("command")
.copied()
.unwrap_or(CompletionCommand::Rustup),
))?
} else {
unreachable!()
}
}
_ => unreachable!(),
None => unreachable!(),
})
}

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