| <!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/quote-1.0.28/src/runtime.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>runtime.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="../../quote/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="../../quote/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="kw">use </span><span class="self">self</span>::get_span::{GetSpan, GetSpanBase, GetSpanInner}; |
| <span class="kw">use crate</span>::{IdentFragment, ToTokens, TokenStreamExt}; |
| <span class="kw">use </span>core::fmt; |
| <span class="kw">use </span>core::iter; |
| <span class="kw">use </span>core::ops::BitOr; |
| <span class="kw">use </span>proc_macro2::{Group, Ident, Punct, Spacing, TokenTree}; |
| |
| <span class="kw">pub use </span>core::option::Option; |
| <span class="kw">pub use </span>proc_macro2::{Delimiter, Span, TokenStream}; |
| <span class="kw">pub use </span>std::format; |
| |
| <span class="kw">pub struct </span>HasIterator; <span class="comment">// True |
| </span><span class="kw">pub struct </span>ThereIsNoIteratorInRepetition; <span class="comment">// False |
| |
| </span><span class="kw">impl </span>BitOr<ThereIsNoIteratorInRepetition> <span class="kw">for </span>ThereIsNoIteratorInRepetition { |
| <span class="kw">type </span>Output = ThereIsNoIteratorInRepetition; |
| <span class="kw">fn </span>bitor(<span class="self">self</span>, _rhs: ThereIsNoIteratorInRepetition) -> ThereIsNoIteratorInRepetition { |
| ThereIsNoIteratorInRepetition |
| } |
| } |
| |
| <span class="kw">impl </span>BitOr<ThereIsNoIteratorInRepetition> <span class="kw">for </span>HasIterator { |
| <span class="kw">type </span>Output = HasIterator; |
| <span class="kw">fn </span>bitor(<span class="self">self</span>, _rhs: ThereIsNoIteratorInRepetition) -> HasIterator { |
| HasIterator |
| } |
| } |
| |
| <span class="kw">impl </span>BitOr<HasIterator> <span class="kw">for </span>ThereIsNoIteratorInRepetition { |
| <span class="kw">type </span>Output = HasIterator; |
| <span class="kw">fn </span>bitor(<span class="self">self</span>, _rhs: HasIterator) -> HasIterator { |
| HasIterator |
| } |
| } |
| |
| <span class="kw">impl </span>BitOr<HasIterator> <span class="kw">for </span>HasIterator { |
| <span class="kw">type </span>Output = HasIterator; |
| <span class="kw">fn </span>bitor(<span class="self">self</span>, _rhs: HasIterator) -> HasIterator { |
| HasIterator |
| } |
| } |
| |
| <span class="doccomment">/// Extension traits used by the implementation of `quote!`. These are defined |
| /// in separate traits, rather than as a single trait due to ambiguity issues. |
| /// |
| /// These traits expose a `quote_into_iter` method which should allow calling |
| /// whichever impl happens to be applicable. Calling that method repeatedly on |
| /// the returned value should be idempotent. |
| </span><span class="kw">pub mod </span>ext { |
| <span class="kw">use </span><span class="kw">super</span>::RepInterp; |
| <span class="kw">use super</span>::{HasIterator <span class="kw">as </span>HasIter, ThereIsNoIteratorInRepetition <span class="kw">as </span>DoesNotHaveIter}; |
| <span class="kw">use </span><span class="kw">crate</span>::ToTokens; |
| <span class="kw">use </span>core::slice; |
| <span class="kw">use </span>std::collections::btree_set::{<span class="self">self</span>, BTreeSet}; |
| |
| <span class="doccomment">/// Extension trait providing the `quote_into_iter` method on iterators. |
| </span><span class="kw">pub trait </span>RepIteratorExt: Iterator + Sized { |
| <span class="kw">fn </span>quote_into_iter(<span class="self">self</span>) -> (<span class="self">Self</span>, HasIter) { |
| (<span class="self">self</span>, HasIter) |
| } |
| } |
| |
| <span class="kw">impl</span><T: Iterator> RepIteratorExt <span class="kw">for </span>T {} |
| |
| <span class="doccomment">/// Extension trait providing the `quote_into_iter` method for |
| /// non-iterable types. These types interpolate the same value in each |
| /// iteration of the repetition. |
| </span><span class="kw">pub trait </span>RepToTokensExt { |
| <span class="doccomment">/// Pretend to be an iterator for the purposes of `quote_into_iter`. |
| /// This allows repeated calls to `quote_into_iter` to continue |
| /// correctly returning DoesNotHaveIter. |
| </span><span class="kw">fn </span>next(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span><span class="self">Self</span>> { |
| <span class="prelude-val">Some</span>(<span class="self">self</span>) |
| } |
| |
| <span class="kw">fn </span>quote_into_iter(<span class="kw-2">&</span><span class="self">self</span>) -> (<span class="kw-2">&</span><span class="self">Self</span>, DoesNotHaveIter) { |
| (<span class="self">self</span>, DoesNotHaveIter) |
| } |
| } |
| |
| <span class="kw">impl</span><T: ToTokens + <span class="question-mark">?</span>Sized> RepToTokensExt <span class="kw">for </span>T {} |
| |
| <span class="doccomment">/// Extension trait providing the `quote_into_iter` method for types that |
| /// can be referenced as an iterator. |
| </span><span class="kw">pub trait </span>RepAsIteratorExt<<span class="lifetime">'q</span>> { |
| <span class="kw">type </span>Iter: Iterator; |
| |
| <span class="kw">fn </span>quote_into_iter(<span class="kw-2">&</span><span class="lifetime">'q </span><span class="self">self</span>) -> (<span class="self">Self</span>::Iter, HasIter); |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'q</span>, <span class="lifetime">'a</span>, T: RepAsIteratorExt<<span class="lifetime">'q</span>> + <span class="question-mark">?</span>Sized> RepAsIteratorExt<<span class="lifetime">'q</span>> <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span>T { |
| <span class="kw">type </span>Iter = T::Iter; |
| |
| <span class="kw">fn </span>quote_into_iter(<span class="kw-2">&</span><span class="lifetime">'q </span><span class="self">self</span>) -> (<span class="self">Self</span>::Iter, HasIter) { |
| <T <span class="kw">as </span>RepAsIteratorExt>::quote_into_iter(<span class="kw-2">*</span><span class="self">self</span>) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'q</span>, <span class="lifetime">'a</span>, T: RepAsIteratorExt<<span class="lifetime">'q</span>> + <span class="question-mark">?</span>Sized> RepAsIteratorExt<<span class="lifetime">'q</span>> <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>T { |
| <span class="kw">type </span>Iter = T::Iter; |
| |
| <span class="kw">fn </span>quote_into_iter(<span class="kw-2">&</span><span class="lifetime">'q </span><span class="self">self</span>) -> (<span class="self">Self</span>::Iter, HasIter) { |
| <T <span class="kw">as </span>RepAsIteratorExt>::quote_into_iter(<span class="kw-2">*</span><span class="self">self</span>) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'q</span>, T: <span class="lifetime">'q</span>> RepAsIteratorExt<<span class="lifetime">'q</span>> <span class="kw">for </span>[T] { |
| <span class="kw">type </span>Iter = slice::Iter<<span class="lifetime">'q</span>, T>; |
| |
| <span class="kw">fn </span>quote_into_iter(<span class="kw-2">&</span><span class="lifetime">'q </span><span class="self">self</span>) -> (<span class="self">Self</span>::Iter, HasIter) { |
| (<span class="self">self</span>.iter(), HasIter) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'q</span>, T: <span class="lifetime">'q</span>> RepAsIteratorExt<<span class="lifetime">'q</span>> <span class="kw">for </span>Vec<T> { |
| <span class="kw">type </span>Iter = slice::Iter<<span class="lifetime">'q</span>, T>; |
| |
| <span class="kw">fn </span>quote_into_iter(<span class="kw-2">&</span><span class="lifetime">'q </span><span class="self">self</span>) -> (<span class="self">Self</span>::Iter, HasIter) { |
| (<span class="self">self</span>.iter(), HasIter) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'q</span>, T: <span class="lifetime">'q</span>> RepAsIteratorExt<<span class="lifetime">'q</span>> <span class="kw">for </span>BTreeSet<T> { |
| <span class="kw">type </span>Iter = btree_set::Iter<<span class="lifetime">'q</span>, T>; |
| |
| <span class="kw">fn </span>quote_into_iter(<span class="kw-2">&</span><span class="lifetime">'q </span><span class="self">self</span>) -> (<span class="self">Self</span>::Iter, HasIter) { |
| (<span class="self">self</span>.iter(), HasIter) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'q</span>, T: RepAsIteratorExt<<span class="lifetime">'q</span>>> RepAsIteratorExt<<span class="lifetime">'q</span>> <span class="kw">for </span>RepInterp<T> { |
| <span class="kw">type </span>Iter = T::Iter; |
| |
| <span class="kw">fn </span>quote_into_iter(<span class="kw-2">&</span><span class="lifetime">'q </span><span class="self">self</span>) -> (<span class="self">Self</span>::Iter, HasIter) { |
| <span class="self">self</span>.<span class="number">0</span>.quote_into_iter() |
| } |
| } |
| } |
| |
| <span class="comment">// Helper type used within interpolations to allow for repeated binding names. |
| // Implements the relevant traits, and exports a dummy `next()` method. |
| </span><span class="attribute">#[derive(Copy, Clone)] |
| </span><span class="kw">pub struct </span>RepInterp<T>(<span class="kw">pub </span>T); |
| |
| <span class="kw">impl</span><T> RepInterp<T> { |
| <span class="comment">// This method is intended to look like `Iterator::next`, and is called when |
| // a name is bound multiple times, as the previous binding will shadow the |
| // original `Iterator` object. This allows us to avoid advancing the |
| // iterator multiple times per iteration. |
| </span><span class="kw">pub fn </span>next(<span class="self">self</span>) -> <span class="prelude-ty">Option</span><T> { |
| <span class="prelude-val">Some</span>(<span class="self">self</span>.<span class="number">0</span>) |
| } |
| } |
| |
| <span class="kw">impl</span><T: Iterator> Iterator <span class="kw">for </span>RepInterp<T> { |
| <span class="kw">type </span>Item = T::Item; |
| |
| <span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>::Item> { |
| <span class="self">self</span>.<span class="number">0</span>.next() |
| } |
| } |
| |
| <span class="kw">impl</span><T: ToTokens> ToTokens <span class="kw">for </span>RepInterp<T> { |
| <span class="kw">fn </span>to_tokens(<span class="kw-2">&</span><span class="self">self</span>, tokens: <span class="kw-2">&mut </span>TokenStream) { |
| <span class="self">self</span>.<span class="number">0</span>.to_tokens(tokens); |
| } |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>get_span<T>(span: T) -> GetSpan<T> { |
| GetSpan(GetSpanInner(GetSpanBase(span))) |
| } |
| |
| <span class="kw">mod </span>get_span { |
| <span class="kw">use </span>core::ops::Deref; |
| <span class="kw">use </span>proc_macro2::extra::DelimSpan; |
| <span class="kw">use </span>proc_macro2::Span; |
| |
| <span class="kw">pub struct </span>GetSpan<T>(<span class="kw">pub</span>(<span class="kw">crate</span>) GetSpanInner<T>); |
| |
| <span class="kw">pub struct </span>GetSpanInner<T>(<span class="kw">pub</span>(<span class="kw">crate</span>) GetSpanBase<T>); |
| |
| <span class="kw">pub struct </span>GetSpanBase<T>(<span class="kw">pub</span>(<span class="kw">crate</span>) T); |
| |
| <span class="kw">impl </span>GetSpan<Span> { |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>__into_span(<span class="self">self</span>) -> Span { |
| ((<span class="self">self</span>.<span class="number">0</span>).<span class="number">0</span>).<span class="number">0 |
| </span>} |
| } |
| |
| <span class="kw">impl </span>GetSpanInner<DelimSpan> { |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>__into_span(<span class="kw-2">&</span><span class="self">self</span>) -> Span { |
| (<span class="self">self</span>.<span class="number">0</span>).<span class="number">0</span>.join() |
| } |
| } |
| |
| <span class="kw">impl</span><T> GetSpanBase<T> { |
| <span class="attribute">#[allow(clippy::unused_self)] |
| </span><span class="kw">pub fn </span>__into_span(<span class="kw-2">&</span><span class="self">self</span>) -> T { |
| <span class="macro">unreachable!</span>() |
| } |
| } |
| |
| <span class="kw">impl</span><T> Deref <span class="kw">for </span>GetSpan<T> { |
| <span class="kw">type </span>Target = GetSpanInner<T>; |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>deref(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span><span class="self">Self</span>::Target { |
| <span class="kw-2">&</span><span class="self">self</span>.<span class="number">0 |
| </span>} |
| } |
| |
| <span class="kw">impl</span><T> Deref <span class="kw">for </span>GetSpanInner<T> { |
| <span class="kw">type </span>Target = GetSpanBase<T>; |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>deref(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span><span class="self">Self</span>::Target { |
| <span class="kw-2">&</span><span class="self">self</span>.<span class="number">0 |
| </span>} |
| } |
| } |
| |
| <span class="kw">pub fn </span>push_group(tokens: <span class="kw-2">&mut </span>TokenStream, delimiter: Delimiter, inner: TokenStream) { |
| tokens.append(Group::new(delimiter, inner)); |
| } |
| |
| <span class="kw">pub fn </span>push_group_spanned( |
| tokens: <span class="kw-2">&mut </span>TokenStream, |
| span: Span, |
| delimiter: Delimiter, |
| inner: TokenStream, |
| ) { |
| <span class="kw">let </span><span class="kw-2">mut </span>g = Group::new(delimiter, inner); |
| g.set_span(span); |
| tokens.append(g); |
| } |
| |
| <span class="kw">pub fn </span>parse(tokens: <span class="kw-2">&mut </span>TokenStream, s: <span class="kw-2">&</span>str) { |
| <span class="kw">let </span>s: TokenStream = s.parse().expect(<span class="string">"invalid token stream"</span>); |
| tokens.extend(iter::once(s)); |
| } |
| |
| <span class="kw">pub fn </span>parse_spanned(tokens: <span class="kw-2">&mut </span>TokenStream, span: Span, s: <span class="kw-2">&</span>str) { |
| <span class="kw">let </span>s: TokenStream = s.parse().expect(<span class="string">"invalid token stream"</span>); |
| tokens.extend(s.into_iter().map(|t| respan_token_tree(t, span))); |
| } |
| |
| <span class="comment">// Token tree with every span replaced by the given one. |
| </span><span class="kw">fn </span>respan_token_tree(<span class="kw-2">mut </span>token: TokenTree, span: Span) -> TokenTree { |
| <span class="kw">match </span><span class="kw-2">&mut </span>token { |
| TokenTree::Group(g) => { |
| <span class="kw">let </span>stream = g |
| .stream() |
| .into_iter() |
| .map(|token| respan_token_tree(token, span)) |
| .collect(); |
| <span class="kw-2">*</span>g = Group::new(g.delimiter(), stream); |
| g.set_span(span); |
| } |
| other => other.set_span(span), |
| } |
| token |
| } |
| |
| <span class="kw">pub fn </span>push_ident(tokens: <span class="kw-2">&mut </span>TokenStream, s: <span class="kw-2">&</span>str) { |
| <span class="kw">let </span>span = Span::call_site(); |
| push_ident_spanned(tokens, span, s); |
| } |
| |
| <span class="kw">pub fn </span>push_ident_spanned(tokens: <span class="kw-2">&mut </span>TokenStream, span: Span, s: <span class="kw-2">&</span>str) { |
| tokens.append(ident_maybe_raw(s, span)); |
| } |
| |
| <span class="kw">pub fn </span>push_lifetime(tokens: <span class="kw-2">&mut </span>TokenStream, lifetime: <span class="kw-2">&</span>str) { |
| <span class="kw">struct </span>Lifetime<<span class="lifetime">'a</span>> { |
| name: <span class="kw-2">&</span><span class="lifetime">'a </span>str, |
| state: u8, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> Iterator <span class="kw">for </span>Lifetime<<span class="lifetime">'a</span>> { |
| <span class="kw">type </span>Item = TokenTree; |
| |
| <span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>::Item> { |
| <span class="kw">match </span><span class="self">self</span>.state { |
| <span class="number">0 </span>=> { |
| <span class="self">self</span>.state = <span class="number">1</span>; |
| <span class="prelude-val">Some</span>(TokenTree::Punct(Punct::new(<span class="string">'\''</span>, Spacing::Joint))) |
| } |
| <span class="number">1 </span>=> { |
| <span class="self">self</span>.state = <span class="number">2</span>; |
| <span class="prelude-val">Some</span>(TokenTree::Ident(Ident::new(<span class="self">self</span>.name, Span::call_site()))) |
| } |
| <span class="kw">_ </span>=> <span class="prelude-val">None</span>, |
| } |
| } |
| } |
| |
| tokens.extend(Lifetime { |
| name: <span class="kw-2">&</span>lifetime[<span class="number">1</span>..], |
| state: <span class="number">0</span>, |
| }); |
| } |
| |
| <span class="kw">pub fn </span>push_lifetime_spanned(tokens: <span class="kw-2">&mut </span>TokenStream, span: Span, lifetime: <span class="kw-2">&</span>str) { |
| <span class="kw">struct </span>Lifetime<<span class="lifetime">'a</span>> { |
| name: <span class="kw-2">&</span><span class="lifetime">'a </span>str, |
| span: Span, |
| state: u8, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> Iterator <span class="kw">for </span>Lifetime<<span class="lifetime">'a</span>> { |
| <span class="kw">type </span>Item = TokenTree; |
| |
| <span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>::Item> { |
| <span class="kw">match </span><span class="self">self</span>.state { |
| <span class="number">0 </span>=> { |
| <span class="self">self</span>.state = <span class="number">1</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>apostrophe = Punct::new(<span class="string">'\''</span>, Spacing::Joint); |
| apostrophe.set_span(<span class="self">self</span>.span); |
| <span class="prelude-val">Some</span>(TokenTree::Punct(apostrophe)) |
| } |
| <span class="number">1 </span>=> { |
| <span class="self">self</span>.state = <span class="number">2</span>; |
| <span class="prelude-val">Some</span>(TokenTree::Ident(Ident::new(<span class="self">self</span>.name, <span class="self">self</span>.span))) |
| } |
| <span class="kw">_ </span>=> <span class="prelude-val">None</span>, |
| } |
| } |
| } |
| |
| tokens.extend(Lifetime { |
| name: <span class="kw-2">&</span>lifetime[<span class="number">1</span>..], |
| span, |
| state: <span class="number">0</span>, |
| }); |
| } |
| |
| <span class="macro">macro_rules! </span>push_punct { |
| (<span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$spanned</span>:ident <span class="macro-nonterminal">$char1</span>:tt) => { |
| <span class="kw">pub fn </span><span class="macro-nonterminal">$name</span>(tokens: <span class="kw-2">&mut </span>TokenStream) { |
| tokens.append(Punct::new(<span class="macro-nonterminal">$char1</span>, Spacing::Alone)); |
| } |
| <span class="kw">pub fn </span><span class="macro-nonterminal">$spanned</span>(tokens: <span class="kw-2">&mut </span>TokenStream, span: Span) { |
| <span class="kw">let </span><span class="kw-2">mut </span>punct = Punct::new(<span class="macro-nonterminal">$char1</span>, Spacing::Alone); |
| punct.set_span(span); |
| tokens.append(punct); |
| } |
| }; |
| (<span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$spanned</span>:ident <span class="macro-nonterminal">$char1</span>:tt <span class="macro-nonterminal">$char2</span>:tt) => { |
| <span class="kw">pub fn </span><span class="macro-nonterminal">$name</span>(tokens: <span class="kw-2">&mut </span>TokenStream) { |
| tokens.append(Punct::new(<span class="macro-nonterminal">$char1</span>, Spacing::Joint)); |
| tokens.append(Punct::new(<span class="macro-nonterminal">$char2</span>, Spacing::Alone)); |
| } |
| <span class="kw">pub fn </span><span class="macro-nonterminal">$spanned</span>(tokens: <span class="kw-2">&mut </span>TokenStream, span: Span) { |
| <span class="kw">let </span><span class="kw-2">mut </span>punct = Punct::new(<span class="macro-nonterminal">$char1</span>, Spacing::Joint); |
| punct.set_span(span); |
| tokens.append(punct); |
| <span class="kw">let </span><span class="kw-2">mut </span>punct = Punct::new(<span class="macro-nonterminal">$char2</span>, Spacing::Alone); |
| punct.set_span(span); |
| tokens.append(punct); |
| } |
| }; |
| (<span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$spanned</span>:ident <span class="macro-nonterminal">$char1</span>:tt <span class="macro-nonterminal">$char2</span>:tt <span class="macro-nonterminal">$char3</span>:tt) => { |
| <span class="kw">pub fn </span><span class="macro-nonterminal">$name</span>(tokens: <span class="kw-2">&mut </span>TokenStream) { |
| tokens.append(Punct::new(<span class="macro-nonterminal">$char1</span>, Spacing::Joint)); |
| tokens.append(Punct::new(<span class="macro-nonterminal">$char2</span>, Spacing::Joint)); |
| tokens.append(Punct::new(<span class="macro-nonterminal">$char3</span>, Spacing::Alone)); |
| } |
| <span class="kw">pub fn </span><span class="macro-nonterminal">$spanned</span>(tokens: <span class="kw-2">&mut </span>TokenStream, span: Span) { |
| <span class="kw">let </span><span class="kw-2">mut </span>punct = Punct::new(<span class="macro-nonterminal">$char1</span>, Spacing::Joint); |
| punct.set_span(span); |
| tokens.append(punct); |
| <span class="kw">let </span><span class="kw-2">mut </span>punct = Punct::new(<span class="macro-nonterminal">$char2</span>, Spacing::Joint); |
| punct.set_span(span); |
| tokens.append(punct); |
| <span class="kw">let </span><span class="kw-2">mut </span>punct = Punct::new(<span class="macro-nonterminal">$char3</span>, Spacing::Alone); |
| punct.set_span(span); |
| tokens.append(punct); |
| } |
| }; |
| } |
| |
| <span class="macro">push_punct!</span>(push_add push_add_spanned <span class="string">'+'</span>); |
| <span class="macro">push_punct!</span>(push_add_eq push_add_eq_spanned <span class="string">'+' '='</span>); |
| <span class="macro">push_punct!</span>(push_and push_and_spanned <span class="string">'&'</span>); |
| <span class="macro">push_punct!</span>(push_and_and push_and_and_spanned <span class="string">'&' '&'</span>); |
| <span class="macro">push_punct!</span>(push_and_eq push_and_eq_spanned <span class="string">'&' '='</span>); |
| <span class="macro">push_punct!</span>(push_at push_at_spanned <span class="string">'@'</span>); |
| <span class="macro">push_punct!</span>(push_bang push_bang_spanned <span class="string">'!'</span>); |
| <span class="macro">push_punct!</span>(push_caret push_caret_spanned <span class="string">'^'</span>); |
| <span class="macro">push_punct!</span>(push_caret_eq push_caret_eq_spanned <span class="string">'^' '='</span>); |
| <span class="macro">push_punct!</span>(push_colon push_colon_spanned <span class="string">':'</span>); |
| <span class="macro">push_punct!</span>(push_colon2 push_colon2_spanned <span class="string">':' ':'</span>); |
| <span class="macro">push_punct!</span>(push_comma push_comma_spanned <span class="string">','</span>); |
| <span class="macro">push_punct!</span>(push_div push_div_spanned <span class="string">'/'</span>); |
| <span class="macro">push_punct!</span>(push_div_eq push_div_eq_spanned <span class="string">'/' '='</span>); |
| <span class="macro">push_punct!</span>(push_dot push_dot_spanned <span class="string">'.'</span>); |
| <span class="macro">push_punct!</span>(push_dot2 push_dot2_spanned <span class="string">'.' '.'</span>); |
| <span class="macro">push_punct!</span>(push_dot3 push_dot3_spanned <span class="string">'.' '.' '.'</span>); |
| <span class="macro">push_punct!</span>(push_dot_dot_eq push_dot_dot_eq_spanned <span class="string">'.' '.' '='</span>); |
| <span class="macro">push_punct!</span>(push_eq push_eq_spanned <span class="string">'='</span>); |
| <span class="macro">push_punct!</span>(push_eq_eq push_eq_eq_spanned <span class="string">'=' '='</span>); |
| <span class="macro">push_punct!</span>(push_ge push_ge_spanned <span class="string">'>' '='</span>); |
| <span class="macro">push_punct!</span>(push_gt push_gt_spanned <span class="string">'>'</span>); |
| <span class="macro">push_punct!</span>(push_le push_le_spanned <span class="string">'<' '='</span>); |
| <span class="macro">push_punct!</span>(push_lt push_lt_spanned <span class="string">'<'</span>); |
| <span class="macro">push_punct!</span>(push_mul_eq push_mul_eq_spanned <span class="string">'*' '='</span>); |
| <span class="macro">push_punct!</span>(push_ne push_ne_spanned <span class="string">'!' '='</span>); |
| <span class="macro">push_punct!</span>(push_or push_or_spanned <span class="string">'|'</span>); |
| <span class="macro">push_punct!</span>(push_or_eq push_or_eq_spanned <span class="string">'|' '='</span>); |
| <span class="macro">push_punct!</span>(push_or_or push_or_or_spanned <span class="string">'|' '|'</span>); |
| <span class="macro">push_punct!</span>(push_pound push_pound_spanned <span class="string">'#'</span>); |
| <span class="macro">push_punct!</span>(push_question push_question_spanned <span class="string">'?'</span>); |
| <span class="macro">push_punct!</span>(push_rarrow push_rarrow_spanned <span class="string">'-' '>'</span>); |
| <span class="macro">push_punct!</span>(push_larrow push_larrow_spanned <span class="string">'<' '-'</span>); |
| <span class="macro">push_punct!</span>(push_rem push_rem_spanned <span class="string">'%'</span>); |
| <span class="macro">push_punct!</span>(push_rem_eq push_rem_eq_spanned <span class="string">'%' '='</span>); |
| <span class="macro">push_punct!</span>(push_fat_arrow push_fat_arrow_spanned <span class="string">'=' '>'</span>); |
| <span class="macro">push_punct!</span>(push_semi push_semi_spanned <span class="string">';'</span>); |
| <span class="macro">push_punct!</span>(push_shl push_shl_spanned <span class="string">'<' '<'</span>); |
| <span class="macro">push_punct!</span>(push_shl_eq push_shl_eq_spanned <span class="string">'<' '<' '='</span>); |
| <span class="macro">push_punct!</span>(push_shr push_shr_spanned <span class="string">'>' '>'</span>); |
| <span class="macro">push_punct!</span>(push_shr_eq push_shr_eq_spanned <span class="string">'>' '>' '='</span>); |
| <span class="macro">push_punct!</span>(push_star push_star_spanned <span class="string">'*'</span>); |
| <span class="macro">push_punct!</span>(push_sub push_sub_spanned <span class="string">'-'</span>); |
| <span class="macro">push_punct!</span>(push_sub_eq push_sub_eq_spanned <span class="string">'-' '='</span>); |
| |
| <span class="kw">pub fn </span>push_underscore(tokens: <span class="kw-2">&mut </span>TokenStream) { |
| push_underscore_spanned(tokens, Span::call_site()); |
| } |
| |
| <span class="kw">pub fn </span>push_underscore_spanned(tokens: <span class="kw-2">&mut </span>TokenStream, span: Span) { |
| tokens.append(Ident::new(<span class="string">"_"</span>, span)); |
| } |
| |
| <span class="comment">// Helper method for constructing identifiers from the `format_ident!` macro, |
| // handling `r#` prefixes. |
| </span><span class="kw">pub fn </span>mk_ident(id: <span class="kw-2">&</span>str, span: <span class="prelude-ty">Option</span><Span>) -> Ident { |
| <span class="kw">let </span>span = span.unwrap_or_else(Span::call_site); |
| ident_maybe_raw(id, span) |
| } |
| |
| <span class="kw">fn </span>ident_maybe_raw(id: <span class="kw-2">&</span>str, span: Span) -> Ident { |
| <span class="kw">if </span>id.starts_with(<span class="string">"r#"</span>) { |
| Ident::new_raw(<span class="kw-2">&</span>id[<span class="number">2</span>..], span) |
| } <span class="kw">else </span>{ |
| Ident::new(id, span) |
| } |
| } |
| |
| <span class="comment">// Adapts from `IdentFragment` to `fmt::Display` for use by the `format_ident!` |
| // macro, and exposes span information from these fragments. |
| // |
| // This struct also has forwarding implementations of the formatting traits |
| // `Octal`, `LowerHex`, `UpperHex`, and `Binary` to allow for their use within |
| // `format_ident!`. |
| </span><span class="attribute">#[derive(Copy, Clone)] |
| </span><span class="kw">pub struct </span>IdentFragmentAdapter<T: IdentFragment>(<span class="kw">pub </span>T); |
| |
| <span class="kw">impl</span><T: IdentFragment> IdentFragmentAdapter<T> { |
| <span class="kw">pub fn </span>span(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><Span> { |
| <span class="self">self</span>.<span class="number">0</span>.span() |
| } |
| } |
| |
| <span class="kw">impl</span><T: IdentFragment> fmt::Display <span class="kw">for </span>IdentFragmentAdapter<T> { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| IdentFragment::fmt(<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>, f) |
| } |
| } |
| |
| <span class="kw">impl</span><T: IdentFragment + fmt::Octal> fmt::Octal <span class="kw">for </span>IdentFragmentAdapter<T> { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| fmt::Octal::fmt(<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>, f) |
| } |
| } |
| |
| <span class="kw">impl</span><T: IdentFragment + fmt::LowerHex> fmt::LowerHex <span class="kw">for </span>IdentFragmentAdapter<T> { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| fmt::LowerHex::fmt(<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>, f) |
| } |
| } |
| |
| <span class="kw">impl</span><T: IdentFragment + fmt::UpperHex> fmt::UpperHex <span class="kw">for </span>IdentFragmentAdapter<T> { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| fmt::UpperHex::fmt(<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>, f) |
| } |
| } |
| |
| <span class="kw">impl</span><T: IdentFragment + fmt::Binary> fmt::Binary <span class="kw">for </span>IdentFragmentAdapter<T> { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| fmt::Binary::fmt(<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>, f) |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="quote" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
