| <!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_matcher.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>arg_matcher.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::{ |
| collections::{ |
| hash_map::{Entry, Iter}, |
| HashMap, |
| }, |
| ffi::OsStr, |
| mem, |
| ops::Deref, |
| }; |
| |
| <span class="comment">// Internal |
| </span><span class="kw">use </span><span class="kw">crate</span>::args::{settings::ArgSettings, AnyArg, ArgMatches, MatchedArg, SubCommand}; |
| |
| <span class="attribute">#[doc(hidden)] |
| #[allow(missing_debug_implementations)] |
| </span><span class="kw">pub struct </span>ArgMatcher<<span class="lifetime">'a</span>>(<span class="kw">pub </span>ArgMatches<<span class="lifetime">'a</span>>); |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> Default <span class="kw">for </span>ArgMatcher<<span class="lifetime">'a</span>> { |
| <span class="kw">fn </span>default() -> <span class="self">Self </span>{ |
| ArgMatcher(ArgMatches::default()) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> ArgMatcher<<span class="lifetime">'a</span>> { |
| <span class="kw">pub fn </span>new() -> <span class="self">Self </span>{ |
| ArgMatcher::default() |
| } |
| |
| <span class="kw">pub fn </span>process_arg_overrides<<span class="lifetime">'b</span>>( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| a: <span class="prelude-ty">Option</span><<span class="kw-2">&</span>AnyArg<<span class="lifetime">'a</span>, <span class="lifetime">'b</span>>>, |
| overrides: <span class="kw-2">&mut </span>Vec<(<span class="kw-2">&</span><span class="lifetime">'b </span>str, <span class="kw-2">&</span><span class="lifetime">'a </span>str)>, |
| required: <span class="kw-2">&mut </span>Vec<<span class="kw-2">&</span><span class="lifetime">'a </span>str>, |
| check_all: bool, |
| ) { |
| <span class="macro">debugln!</span>( |
| <span class="string">"ArgMatcher::process_arg_overrides:{:?};"</span>, |
| a.map_or(<span class="prelude-val">None</span>, |a| <span class="prelude-val">Some</span>(a.name())) |
| ); |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(aa) = a { |
| <span class="kw">let </span><span class="kw-2">mut </span>self_done = <span class="bool-val">false</span>; |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(a_overrides) = aa.overrides() { |
| <span class="kw">for </span>overr <span class="kw">in </span>a_overrides { |
| <span class="macro">debugln!</span>(<span class="string">"ArgMatcher::process_arg_overrides:iter:{};"</span>, overr); |
| <span class="kw">if </span>overr == <span class="kw-2">&</span>aa.name() { |
| self_done = <span class="bool-val">true</span>; |
| <span class="self">self</span>.handle_self_overrides(a); |
| } <span class="kw">else if </span><span class="self">self</span>.is_present(overr) { |
| <span class="macro">debugln!</span>( |
| <span class="string">"ArgMatcher::process_arg_overrides:iter:{}: removing from matches;"</span>, |
| overr |
| ); |
| <span class="self">self</span>.remove(overr); |
| <span class="kw">for </span>i <span class="kw">in </span>(<span class="number">0</span>..required.len()).rev() { |
| <span class="kw">if </span><span class="kw-2">&</span>required[i] == overr { |
| <span class="macro">debugln!</span>( |
| <span class="string">"ArgMatcher::process_arg_overrides:iter:{}: removing required;"</span>, |
| overr |
| ); |
| required.swap_remove(i); |
| <span class="kw">break</span>; |
| } |
| } |
| overrides.push((overr, aa.name())); |
| } <span class="kw">else </span>{ |
| overrides.push((overr, aa.name())); |
| } |
| } |
| } |
| <span class="kw">if </span>check_all && !self_done { |
| <span class="self">self</span>.handle_self_overrides(a); |
| } |
| } |
| } |
| |
| <span class="kw">pub fn </span>handle_self_overrides<<span class="lifetime">'b</span>>(<span class="kw-2">&mut </span><span class="self">self</span>, a: <span class="prelude-ty">Option</span><<span class="kw-2">&</span>AnyArg<<span class="lifetime">'a</span>, <span class="lifetime">'b</span>>>) { |
| <span class="macro">debugln!</span>( |
| <span class="string">"ArgMatcher::handle_self_overrides:{:?};"</span>, |
| a.map_or(<span class="prelude-val">None</span>, |a| <span class="prelude-val">Some</span>(a.name())) |
| ); |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(aa) = a { |
| <span class="kw">if </span>!aa.has_switch() || aa.is_set(ArgSettings::Multiple) { |
| <span class="comment">// positional args can't override self or else we would never advance to the next |
| |
| // Also flags with --multiple set are ignored otherwise we could never have more |
| // than one |
| </span><span class="kw">return</span>; |
| } |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(ma) = <span class="self">self</span>.get_mut(aa.name()) { |
| <span class="kw">if </span>ma.vals.len() > <span class="number">1 </span>{ |
| <span class="comment">// swap_remove(0) would be O(1) but does not preserve order, which |
| // we need |
| </span>ma.vals.remove(<span class="number">0</span>); |
| ma.occurs = <span class="number">1</span>; |
| } <span class="kw">else if </span>!aa.takes_value() && ma.occurs > <span class="number">1 </span>{ |
| ma.occurs = <span class="number">1</span>; |
| } |
| } |
| } |
| } |
| |
| <span class="kw">pub fn </span>is_present(<span class="kw-2">&</span><span class="self">self</span>, name: <span class="kw-2">&</span>str) -> bool { |
| <span class="self">self</span>.<span class="number">0</span>.is_present(name) |
| } |
| |
| <span class="kw">pub fn </span>propagate_globals(<span class="kw-2">&mut </span><span class="self">self</span>, global_arg_vec: <span class="kw-2">&</span>[<span class="kw-2">&</span><span class="lifetime">'a </span>str]) { |
| <span class="macro">debugln!</span>( |
| <span class="string">"ArgMatcher::get_global_values: global_arg_vec={:?}"</span>, |
| global_arg_vec |
| ); |
| <span class="kw">let </span><span class="kw-2">mut </span>vals_map = HashMap::new(); |
| <span class="self">self</span>.fill_in_global_values(global_arg_vec, <span class="kw-2">&mut </span>vals_map); |
| } |
| |
| <span class="kw">fn </span>fill_in_global_values( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| global_arg_vec: <span class="kw-2">&</span>[<span class="kw-2">&</span><span class="lifetime">'a </span>str], |
| vals_map: <span class="kw-2">&mut </span>HashMap<<span class="kw-2">&</span><span class="lifetime">'a </span>str, MatchedArg>, |
| ) { |
| <span class="kw">for </span>global_arg <span class="kw">in </span>global_arg_vec { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(ma) = <span class="self">self</span>.get(global_arg) { |
| <span class="comment">// We have to check if the parent's global arg wasn't used but still exists |
| // such as from a default value. |
| // |
| // For example, `myprog subcommand --global-arg=value` where --global-arg defines |
| // a default value of `other` myprog would have an existing MatchedArg for |
| // --global-arg where the value is `other`, however the occurs will be 0. |
| </span><span class="kw">let </span>to_update = <span class="kw">if let </span><span class="prelude-val">Some</span>(parent_ma) = vals_map.get(global_arg) { |
| <span class="kw">if </span>parent_ma.occurs > <span class="number">0 </span>&& ma.occurs == <span class="number">0 </span>{ |
| parent_ma.clone() |
| } <span class="kw">else </span>{ |
| ma.clone() |
| } |
| } <span class="kw">else </span>{ |
| ma.clone() |
| }; |
| vals_map.insert(global_arg, to_update); |
| } |
| } |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw-2">ref mut </span>sc) = <span class="self">self</span>.<span class="number">0</span>.subcommand { |
| <span class="kw">let </span><span class="kw-2">mut </span>am = ArgMatcher(mem::replace(<span class="kw-2">&mut </span>sc.matches, ArgMatches::new())); |
| am.fill_in_global_values(global_arg_vec, vals_map); |
| mem::swap(<span class="kw-2">&mut </span>am.<span class="number">0</span>, <span class="kw-2">&mut </span>sc.matches); |
| } |
| |
| <span class="kw">for </span>(name, matched_arg) <span class="kw">in </span>vals_map.iter_mut() { |
| <span class="self">self</span>.<span class="number">0</span>.args.insert(name, matched_arg.clone()); |
| } |
| } |
| |
| <span class="kw">pub fn </span>get_mut(<span class="kw-2">&mut </span><span class="self">self</span>, arg: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Option</span><<span class="kw-2">&mut </span>MatchedArg> { |
| <span class="self">self</span>.<span class="number">0</span>.args.get_mut(arg) |
| } |
| |
| <span class="kw">pub fn </span>get(<span class="kw-2">&</span><span class="self">self</span>, arg: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>MatchedArg> { |
| <span class="self">self</span>.<span class="number">0</span>.args.get(arg) |
| } |
| |
| <span class="kw">pub fn </span>remove(<span class="kw-2">&mut </span><span class="self">self</span>, arg: <span class="kw-2">&</span>str) { |
| <span class="self">self</span>.<span class="number">0</span>.args.remove(arg); |
| } |
| |
| <span class="kw">pub fn </span>remove_all(<span class="kw-2">&mut </span><span class="self">self</span>, args: <span class="kw-2">&</span>[<span class="kw-2">&</span>str]) { |
| <span class="kw">for </span><span class="kw-2">&</span>arg <span class="kw">in </span>args { |
| <span class="self">self</span>.<span class="number">0</span>.args.remove(arg); |
| } |
| } |
| |
| <span class="kw">pub fn </span>insert(<span class="kw-2">&mut </span><span class="self">self</span>, name: <span class="kw-2">&</span><span class="lifetime">'a </span>str) { |
| <span class="self">self</span>.<span class="number">0</span>.args.insert(name, MatchedArg::new()); |
| } |
| |
| <span class="kw">pub fn </span>contains(<span class="kw-2">&</span><span class="self">self</span>, arg: <span class="kw-2">&</span>str) -> bool { |
| <span class="self">self</span>.<span class="number">0</span>.args.contains_key(arg) |
| } |
| |
| <span class="kw">pub fn </span>is_empty(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="self">self</span>.<span class="number">0</span>.args.is_empty() |
| } |
| |
| <span class="kw">pub fn </span>usage(<span class="kw-2">&mut </span><span class="self">self</span>, usage: String) { |
| <span class="self">self</span>.<span class="number">0</span>.usage = <span class="prelude-val">Some</span>(usage); |
| } |
| |
| <span class="kw">pub fn </span>arg_names(<span class="kw-2">&</span><span class="lifetime">'a </span><span class="self">self</span>) -> Vec<<span class="kw-2">&</span><span class="lifetime">'a </span>str> { |
| <span class="self">self</span>.<span class="number">0</span>.args.keys().map(Deref::deref).collect() |
| } |
| |
| <span class="kw">pub fn </span>entry(<span class="kw-2">&mut </span><span class="self">self</span>, arg: <span class="kw-2">&</span><span class="lifetime">'a </span>str) -> Entry<<span class="kw-2">&</span><span class="lifetime">'a </span>str, MatchedArg> { |
| <span class="self">self</span>.<span class="number">0</span>.args.entry(arg) |
| } |
| |
| <span class="kw">pub fn </span>subcommand(<span class="kw-2">&mut </span><span class="self">self</span>, sc: SubCommand<<span class="lifetime">'a</span>>) { |
| <span class="self">self</span>.<span class="number">0</span>.subcommand = <span class="prelude-val">Some</span>(Box::new(sc)); |
| } |
| |
| <span class="kw">pub fn </span>subcommand_name(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>str> { |
| <span class="self">self</span>.<span class="number">0</span>.subcommand_name() |
| } |
| |
| <span class="kw">pub fn </span>iter(<span class="kw-2">&</span><span class="self">self</span>) -> Iter<<span class="kw-2">&</span>str, MatchedArg> { |
| <span class="self">self</span>.<span class="number">0</span>.args.iter() |
| } |
| |
| <span class="kw">pub fn </span>inc_occurrence_of(<span class="kw-2">&mut </span><span class="self">self</span>, arg: <span class="kw-2">&</span><span class="lifetime">'a </span>str) { |
| <span class="macro">debugln!</span>(<span class="string">"ArgMatcher::inc_occurrence_of: arg={}"</span>, arg); |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(a) = <span class="self">self</span>.get_mut(arg) { |
| a.occurs += <span class="number">1</span>; |
| <span class="kw">return</span>; |
| } |
| <span class="macro">debugln!</span>(<span class="string">"ArgMatcher::inc_occurrence_of: first instance"</span>); |
| <span class="self">self</span>.insert(arg); |
| } |
| |
| <span class="kw">pub fn </span>inc_occurrences_of(<span class="kw-2">&mut </span><span class="self">self</span>, args: <span class="kw-2">&</span>[<span class="kw-2">&</span><span class="lifetime">'a </span>str]) { |
| <span class="macro">debugln!</span>(<span class="string">"ArgMatcher::inc_occurrences_of: args={:?}"</span>, args); |
| <span class="kw">for </span>arg <span class="kw">in </span>args { |
| <span class="self">self</span>.inc_occurrence_of(arg); |
| } |
| } |
| |
| <span class="kw">pub fn </span>add_val_to(<span class="kw-2">&mut </span><span class="self">self</span>, arg: <span class="kw-2">&</span><span class="lifetime">'a </span>str, val: <span class="kw-2">&</span>OsStr) { |
| <span class="kw">let </span>ma = <span class="self">self</span>.entry(arg).or_insert(MatchedArg { |
| occurs: <span class="number">0</span>, |
| indices: Vec::with_capacity(<span class="number">1</span>), |
| vals: Vec::with_capacity(<span class="number">1</span>), |
| }); |
| ma.vals.push(val.to_owned()); |
| } |
| |
| <span class="kw">pub fn </span>add_index_to(<span class="kw-2">&mut </span><span class="self">self</span>, arg: <span class="kw-2">&</span><span class="lifetime">'a </span>str, idx: usize) { |
| <span class="kw">let </span>ma = <span class="self">self</span>.entry(arg).or_insert(MatchedArg { |
| occurs: <span class="number">0</span>, |
| indices: Vec::with_capacity(<span class="number">1</span>), |
| vals: Vec::new(), |
| }); |
| ma.indices.push(idx); |
| } |
| |
| <span class="kw">pub fn </span>needs_more_vals<<span class="lifetime">'b</span>, A>(<span class="kw-2">&</span><span class="self">self</span>, o: <span class="kw-2">&</span>A) -> bool |
| <span class="kw">where |
| </span>A: AnyArg<<span class="lifetime">'a</span>, <span class="lifetime">'b</span>>, |
| { |
| <span class="macro">debugln!</span>(<span class="string">"ArgMatcher::needs_more_vals: o={}"</span>, o.name()); |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(ma) = <span class="self">self</span>.get(o.name()) { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(num) = o.num_vals() { |
| <span class="macro">debugln!</span>(<span class="string">"ArgMatcher::needs_more_vals: num_vals...{}"</span>, num); |
| <span class="kw">return if </span>o.is_set(ArgSettings::Multiple) { |
| ((ma.vals.len() <span class="kw">as </span>u64) % num) != <span class="number">0 |
| </span>} <span class="kw">else </span>{ |
| num != (ma.vals.len() <span class="kw">as </span>u64) |
| }; |
| } <span class="kw">else if let </span><span class="prelude-val">Some</span>(num) = o.max_vals() { |
| <span class="macro">debugln!</span>(<span class="string">"ArgMatcher::needs_more_vals: max_vals...{}"</span>, num); |
| <span class="kw">return </span>(ma.vals.len() <span class="kw">as </span>u64) <= num; |
| } <span class="kw">else if </span>o.min_vals().is_some() { |
| <span class="macro">debugln!</span>(<span class="string">"ArgMatcher::needs_more_vals: min_vals...true"</span>); |
| <span class="kw">return </span><span class="bool-val">true</span>; |
| } |
| <span class="kw">return </span>o.is_set(ArgSettings::Multiple); |
| } |
| <span class="bool-val">true |
| </span>} |
| } |
| |
| <span class="comment">// Not changing to From just to not deal with possible breaking changes on v2 since v3 is coming |
| // in the future anyways |
| </span><span class="attribute">#[cfg_attr(feature = <span class="string">"cargo-clippy"</span>, allow(clippy::from_over_into))] |
| </span><span class="kw">impl</span><<span class="lifetime">'a</span>> Into<ArgMatches<<span class="lifetime">'a</span>>> <span class="kw">for </span>ArgMatcher<<span class="lifetime">'a</span>> { |
| <span class="kw">fn </span>into(<span class="self">self</span>) -> ArgMatches<<span class="lifetime">'a</span>> { |
| <span class="self">self</span>.<span class="number">0 |
| </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> |
