From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- vendor/clap/examples/derive_ref/custom-bool.rs | 32 ++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 vendor/clap/examples/derive_ref/custom-bool.rs (limited to 'vendor/clap/examples/derive_ref/custom-bool.rs') diff --git a/vendor/clap/examples/derive_ref/custom-bool.rs b/vendor/clap/examples/derive_ref/custom-bool.rs new file mode 100644 index 000000000..d3c321e72 --- /dev/null +++ b/vendor/clap/examples/derive_ref/custom-bool.rs @@ -0,0 +1,32 @@ +use clap::Parser; + +#[derive(Parser, Debug, PartialEq)] +#[clap(author, version, about, long_about = None)] +struct Opt { + // Default parser for `Set` is FromStr::from_str. + // `impl FromStr for bool` parses `true` or `false` so this + // works as expected. + #[clap(long, action = clap::ArgAction::Set)] + foo: bool, + + // Of course, this could be done with an explicit parser function. + #[clap(long, action = clap::ArgAction::Set, value_parser = true_or_false, default_value_t)] + bar: bool, + + // `bool` can be positional only with explicit `action` annotation + #[clap(action = clap::ArgAction::Set)] + boom: bool, +} + +fn true_or_false(s: &str) -> Result { + match s { + "true" => Ok(true), + "false" => Ok(false), + _ => Err("expected `true` or `false`"), + } +} + +fn main() { + let opt = Opt::parse(); + dbg!(opt); +} -- cgit v1.2.3