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authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/clap/examples/tutorial_builder/04_01_enum.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
Diffstat (limited to 'vendor/clap/examples/tutorial_builder/04_01_enum.rs')
-rw-r--r--vendor/clap/examples/tutorial_builder/04_01_enum.rs66
1 files changed, 0 insertions, 66 deletions
diff --git a/vendor/clap/examples/tutorial_builder/04_01_enum.rs b/vendor/clap/examples/tutorial_builder/04_01_enum.rs
deleted file mode 100644
index aa9f41c..0000000
--- a/vendor/clap/examples/tutorial_builder/04_01_enum.rs
+++ /dev/null
@@ -1,66 +0,0 @@
-use clap::{arg, builder::PossibleValue, command, value_parser, ValueEnum};
-
-#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord)]
-enum Mode {
- Fast,
- Slow,
-}
-
-// Can also be derived with feature flag `derive`
-impl ValueEnum for Mode {
- fn value_variants<'a>() -> &'a [Self] {
- &[Mode::Fast, Mode::Slow]
- }
-
- fn to_possible_value<'a>(&self) -> Option<PossibleValue> {
- Some(match self {
- Mode::Fast => PossibleValue::new("fast").help("Run swiftly"),
- Mode::Slow => PossibleValue::new("slow").help("Crawl slowly but steadily"),
- })
- }
-}
-
-impl std::fmt::Display for Mode {
- fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
- self.to_possible_value()
- .expect("no values are skipped")
- .get_name()
- .fmt(f)
- }
-}
-
-impl std::str::FromStr for Mode {
- type Err = String;
-
- fn from_str(s: &str) -> Result<Self, Self::Err> {
- for variant in Self::value_variants() {
- if variant.to_possible_value().unwrap().matches(s, false) {
- return Ok(*variant);
- }
- }
- Err(format!("invalid variant: {s}"))
- }
-}
-
-fn main() {
- let matches = command!() // requires `cargo` feature
- .arg(
- arg!(<MODE>)
- .help("What mode to run the program in")
- .value_parser(value_parser!(Mode)),
- )
- .get_matches();
-
- // Note, it's safe to call unwrap() because the arg is required
- match matches
- .get_one::<Mode>("MODE")
- .expect("'MODE' is required and parsing will fail if its missing")
- {
- Mode::Fast => {
- println!("Hare");
- }
- Mode::Slow => {
- println!("Tortoise");
- }
- }
-}