| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/clap-2.34.0/src/args/arg_builder/flag.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>flag.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../../normalize.css"><link rel="stylesheet" href="../../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../../ayu.css" disabled><link rel="stylesheet" href="../../../../dark.css" disabled><link rel="stylesheet" href="../../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../../storage.js"></script><script defer src="../../../../source-script.js"></script><script defer src="../../../../source-files.js"></script><script defer src="../../../../main.js"></script><noscript><link rel="stylesheet" href="../../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../../clap/index.html"><div class="logo-container"><img class="rust-logo" src="../../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../../clap/index.html"><img class="rust-logo" src="../../../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="comment">// Std |
| </span><span class="kw">use </span>std::{ |
| convert::From, |
| ffi::{OsStr, OsString}, |
| fmt::{Display, Formatter, <span class="prelude-ty">Result</span>}, |
| mem, |
| rc::Rc, |
| result::Result <span class="kw">as </span>StdResult, |
| }; |
| |
| <span class="comment">// Internal |
| </span><span class="kw">use crate</span>::{ |
| args::{AnyArg, Arg, ArgSettings, Base, DispOrder, Switched}, |
| map::{<span class="self">self</span>, VecMap}, |
| }; |
| |
| <span class="attribute">#[derive(Default, Clone, Debug)] |
| #[doc(hidden)] |
| </span><span class="kw">pub struct </span>FlagBuilder<<span class="lifetime">'n</span>, <span class="lifetime">'e</span>> |
| <span class="kw">where |
| </span><span class="lifetime">'n</span>: <span class="lifetime">'e</span>, |
| { |
| <span class="kw">pub </span>b: Base<<span class="lifetime">'n</span>, <span class="lifetime">'e</span>>, |
| <span class="kw">pub </span>s: Switched<<span class="lifetime">'e</span>>, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'n</span>, <span class="lifetime">'e</span>> FlagBuilder<<span class="lifetime">'n</span>, <span class="lifetime">'e</span>> { |
| <span class="kw">pub fn </span>new(name: <span class="kw-2">&</span><span class="lifetime">'n </span>str) -> <span class="self">Self </span>{ |
| FlagBuilder { |
| b: Base::new(name), |
| ..Default::default() |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="lifetime">'b</span>, <span class="lifetime">'z</span>> From<<span class="kw-2">&</span><span class="lifetime">'z </span>Arg<<span class="lifetime">'a</span>, <span class="lifetime">'b</span>>> <span class="kw">for </span>FlagBuilder<<span class="lifetime">'a</span>, <span class="lifetime">'b</span>> { |
| <span class="kw">fn </span>from(a: <span class="kw-2">&</span><span class="lifetime">'z </span>Arg<<span class="lifetime">'a</span>, <span class="lifetime">'b</span>>) -> <span class="self">Self </span>{ |
| FlagBuilder { |
| b: Base::from(a), |
| s: Switched::from(a), |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="lifetime">'b</span>> From<Arg<<span class="lifetime">'a</span>, <span class="lifetime">'b</span>>> <span class="kw">for </span>FlagBuilder<<span class="lifetime">'a</span>, <span class="lifetime">'b</span>> { |
| <span class="kw">fn </span>from(<span class="kw-2">mut </span>a: Arg<<span class="lifetime">'a</span>, <span class="lifetime">'b</span>>) -> <span class="self">Self </span>{ |
| FlagBuilder { |
| b: mem::take(<span class="kw-2">&mut </span>a.b), |
| s: mem::take(<span class="kw-2">&mut </span>a.s), |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'n</span>, <span class="lifetime">'e</span>> Display <span class="kw">for </span>FlagBuilder<<span class="lifetime">'n</span>, <span class="lifetime">'e</span>> { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>Formatter) -> <span class="prelude-ty">Result </span>{ |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(l) = <span class="self">self</span>.s.long { |
| <span class="macro">write!</span>(f, <span class="string">"--{}"</span>, l)<span class="question-mark">?</span>; |
| } <span class="kw">else </span>{ |
| <span class="macro">write!</span>(f, <span class="string">"-{}"</span>, <span class="self">self</span>.s.short.unwrap())<span class="question-mark">?</span>; |
| } |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'n</span>, <span class="lifetime">'e</span>> AnyArg<<span class="lifetime">'n</span>, <span class="lifetime">'e</span>> <span class="kw">for </span>FlagBuilder<<span class="lifetime">'n</span>, <span class="lifetime">'e</span>> { |
| <span class="kw">fn </span>name(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span><span class="lifetime">'n </span>str { |
| <span class="self">self</span>.b.name |
| } |
| <span class="kw">fn </span>overrides(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>[<span class="kw-2">&</span><span class="lifetime">'e </span>str]> { |
| <span class="self">self</span>.b.overrides.as_ref().map(|o| <span class="kw-2">&</span>o[..]) |
| } |
| <span class="kw">fn </span>requires(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>[(<span class="prelude-ty">Option</span><<span class="kw-2">&</span><span class="lifetime">'e </span>str>, <span class="kw-2">&</span><span class="lifetime">'n </span>str)]> { |
| <span class="self">self</span>.b.requires.as_ref().map(|o| <span class="kw-2">&</span>o[..]) |
| } |
| <span class="kw">fn </span>blacklist(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>[<span class="kw-2">&</span><span class="lifetime">'e </span>str]> { |
| <span class="self">self</span>.b.blacklist.as_ref().map(|o| <span class="kw-2">&</span>o[..]) |
| } |
| <span class="kw">fn </span>required_unless(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>[<span class="kw-2">&</span><span class="lifetime">'e </span>str]> { |
| <span class="self">self</span>.b.r_unless.as_ref().map(|o| <span class="kw-2">&</span>o[..]) |
| } |
| <span class="kw">fn </span>is_set(<span class="kw-2">&</span><span class="self">self</span>, s: ArgSettings) -> bool { |
| <span class="self">self</span>.b.settings.is_set(s) |
| } |
| <span class="kw">fn </span>has_switch(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="bool-val">true |
| </span>} |
| <span class="kw">fn </span>takes_value(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="bool-val">false |
| </span>} |
| <span class="kw">fn </span>set(<span class="kw-2">&mut </span><span class="self">self</span>, s: ArgSettings) { |
| <span class="self">self</span>.b.settings.set(s) |
| } |
| <span class="kw">fn </span>max_vals(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><u64> { |
| <span class="prelude-val">None |
| </span>} |
| <span class="kw">fn </span>val_names(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>VecMap<<span class="kw-2">&</span><span class="lifetime">'e </span>str>> { |
| <span class="prelude-val">None |
| </span>} |
| <span class="kw">fn </span>num_vals(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><u64> { |
| <span class="prelude-val">None |
| </span>} |
| <span class="kw">fn </span>possible_vals(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>[<span class="kw-2">&</span><span class="lifetime">'e </span>str]> { |
| <span class="prelude-val">None |
| </span>} |
| <span class="attribute">#[cfg_attr(feature = <span class="string">"cargo-clippy"</span>, allow(clippy::type_complexity))] |
| </span><span class="kw">fn </span>validator(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>Rc<Fn(String) -> StdResult<(), String>>> { |
| <span class="prelude-val">None |
| </span>} |
| <span class="attribute">#[cfg_attr(feature = <span class="string">"cargo-clippy"</span>, allow(clippy::type_complexity))] |
| </span><span class="kw">fn </span>validator_os(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>Rc<Fn(<span class="kw-2">&</span>OsStr) -> StdResult<(), OsString>>> { |
| <span class="prelude-val">None |
| </span>} |
| <span class="kw">fn </span>min_vals(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><u64> { |
| <span class="prelude-val">None |
| </span>} |
| <span class="kw">fn </span>short(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><char> { |
| <span class="self">self</span>.s.short |
| } |
| <span class="kw">fn </span>long(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span><span class="lifetime">'e </span>str> { |
| <span class="self">self</span>.s.long |
| } |
| <span class="kw">fn </span>val_delim(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><char> { |
| <span class="prelude-val">None |
| </span>} |
| <span class="kw">fn </span>help(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span><span class="lifetime">'e </span>str> { |
| <span class="self">self</span>.b.help |
| } |
| <span class="kw">fn </span>long_help(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span><span class="lifetime">'e </span>str> { |
| <span class="self">self</span>.b.long_help |
| } |
| <span class="kw">fn </span>val_terminator(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span><span class="lifetime">'e </span>str> { |
| <span class="prelude-val">None |
| </span>} |
| <span class="kw">fn </span>default_val(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span><span class="lifetime">'e </span>OsStr> { |
| <span class="prelude-val">None |
| </span>} |
| <span class="kw">fn </span>default_vals_ifs(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><map::Values<(<span class="kw-2">&</span><span class="lifetime">'n </span>str, <span class="prelude-ty">Option</span><<span class="kw-2">&</span><span class="lifetime">'e </span>OsStr>, <span class="kw-2">&</span><span class="lifetime">'e </span>OsStr)>> { |
| <span class="prelude-val">None |
| </span>} |
| <span class="kw">fn </span>env<<span class="lifetime">'s</span>>(<span class="kw-2">&</span><span class="lifetime">'s </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><(<span class="kw-2">&</span><span class="lifetime">'n </span>OsStr, <span class="prelude-ty">Option</span><<span class="kw-2">&</span><span class="lifetime">'s </span>OsString>)> { |
| <span class="prelude-val">None |
| </span>} |
| <span class="kw">fn </span>longest_filter(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="self">self</span>.s.long.is_some() |
| } |
| <span class="kw">fn </span>aliases(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><Vec<<span class="kw-2">&</span><span class="lifetime">'e </span>str>> { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw-2">ref </span>aliases) = <span class="self">self</span>.s.aliases { |
| <span class="kw">let </span>vis_aliases: Vec<<span class="kw">_</span>> = aliases |
| .iter() |
| .filter_map(|<span class="kw-2">&</span>(n, v)| <span class="kw">if </span>v { <span class="prelude-val">Some</span>(n) } <span class="kw">else </span>{ <span class="prelude-val">None </span>}) |
| .collect(); |
| <span class="kw">if </span>vis_aliases.is_empty() { |
| <span class="prelude-val">None |
| </span>} <span class="kw">else </span>{ |
| <span class="prelude-val">Some</span>(vis_aliases) |
| } |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>} |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'n</span>, <span class="lifetime">'e</span>> DispOrder <span class="kw">for </span>FlagBuilder<<span class="lifetime">'n</span>, <span class="lifetime">'e</span>> { |
| <span class="kw">fn </span>disp_ord(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="self">self</span>.s.disp_ord |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'n</span>, <span class="lifetime">'e</span>> PartialEq <span class="kw">for </span>FlagBuilder<<span class="lifetime">'n</span>, <span class="lifetime">'e</span>> { |
| <span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>FlagBuilder<<span class="lifetime">'n</span>, <span class="lifetime">'e</span>>) -> bool { |
| <span class="self">self</span>.b == other.b |
| } |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>test { |
| <span class="kw">use </span><span class="kw">super</span>::FlagBuilder; |
| <span class="kw">use </span><span class="kw">crate</span>::args::settings::ArgSettings; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>flagbuilder_display() { |
| <span class="kw">let </span><span class="kw-2">mut </span>f = FlagBuilder::new(<span class="string">"flg"</span>); |
| f.b.settings.set(ArgSettings::Multiple); |
| f.s.long = <span class="prelude-val">Some</span>(<span class="string">"flag"</span>); |
| |
| <span class="macro">assert_eq!</span>(<span class="kw-2">&*</span><span class="macro">format!</span>(<span class="string">"{}"</span>, f), <span class="string">"--flag"</span>); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>f2 = FlagBuilder::new(<span class="string">"flg"</span>); |
| f2.s.short = <span class="prelude-val">Some</span>(<span class="string">'f'</span>); |
| |
| <span class="macro">assert_eq!</span>(<span class="kw-2">&*</span><span class="macro">format!</span>(<span class="string">"{}"</span>, f2), <span class="string">"-f"</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>flagbuilder_display_single_alias() { |
| <span class="kw">let </span><span class="kw-2">mut </span>f = FlagBuilder::new(<span class="string">"flg"</span>); |
| f.s.long = <span class="prelude-val">Some</span>(<span class="string">"flag"</span>); |
| f.s.aliases = <span class="prelude-val">Some</span>(<span class="macro">vec!</span>[(<span class="string">"als"</span>, <span class="bool-val">true</span>)]); |
| |
| <span class="macro">assert_eq!</span>(<span class="kw-2">&*</span><span class="macro">format!</span>(<span class="string">"{}"</span>, f), <span class="string">"--flag"</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>flagbuilder_display_multiple_aliases() { |
| <span class="kw">let </span><span class="kw-2">mut </span>f = FlagBuilder::new(<span class="string">"flg"</span>); |
| f.s.short = <span class="prelude-val">Some</span>(<span class="string">'f'</span>); |
| f.s.aliases = <span class="prelude-val">Some</span>(<span class="macro">vec!</span>[ |
| (<span class="string">"alias_not_visible"</span>, <span class="bool-val">false</span>), |
| (<span class="string">"f2"</span>, <span class="bool-val">true</span>), |
| (<span class="string">"f3"</span>, <span class="bool-val">true</span>), |
| (<span class="string">"f4"</span>, <span class="bool-val">true</span>), |
| ]); |
| <span class="macro">assert_eq!</span>(<span class="kw-2">&*</span><span class="macro">format!</span>(<span class="string">"{}"</span>, f), <span class="string">"-f"</span>); |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../../" data-current-crate="clap" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
