| <!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/syn-2.0.18/src/op.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>op.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="../../syn/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="../../syn/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="macro">ast_enum! </span>{ |
| <span class="doccomment">/// A binary operator: `+`, `+=`, `&`. |
| </span><span class="attribute">#[cfg_attr(doc_cfg, doc(cfg(any(feature = <span class="string">"full"</span>, feature = <span class="string">"derive"</span>))))] |
| #[non_exhaustive] |
| </span><span class="kw">pub enum </span>BinOp { |
| <span class="doccomment">/// The `+` operator (addition) |
| </span>Add(<span class="macro">Token!</span>[+]), |
| <span class="doccomment">/// The `-` operator (subtraction) |
| </span>Sub(<span class="macro">Token!</span>[-]), |
| <span class="doccomment">/// The `*` operator (multiplication) |
| </span>Mul(<span class="macro">Token!</span>[<span class="kw-2">*</span>]), |
| <span class="doccomment">/// The `/` operator (division) |
| </span>Div(<span class="macro">Token!</span>[/]), |
| <span class="doccomment">/// The `%` operator (modulus) |
| </span>Rem(<span class="macro">Token!</span>[%]), |
| <span class="doccomment">/// The `&&` operator (logical and) |
| </span>And(<span class="macro">Token!</span>[&&]), |
| <span class="doccomment">/// The `||` operator (logical or) |
| </span>Or(<span class="macro">Token!</span>[||]), |
| <span class="doccomment">/// The `^` operator (bitwise xor) |
| </span>BitXor(<span class="macro">Token!</span>[^]), |
| <span class="doccomment">/// The `&` operator (bitwise and) |
| </span>BitAnd(<span class="macro">Token!</span>[<span class="kw-2">&</span>]), |
| <span class="doccomment">/// The `|` operator (bitwise or) |
| </span>BitOr(<span class="macro">Token!</span>[|]), |
| <span class="doccomment">/// The `<<` operator (shift left) |
| </span>Shl(<span class="macro">Token!</span>[<<]), |
| <span class="doccomment">/// The `>>` operator (shift right) |
| </span>Shr(<span class="macro">Token!</span>[>>]), |
| <span class="doccomment">/// The `==` operator (equality) |
| </span>Eq(<span class="macro">Token!</span>[==]), |
| <span class="doccomment">/// The `<` operator (less than) |
| </span>Lt(<span class="macro">Token!</span>[<]), |
| <span class="doccomment">/// The `<=` operator (less than or equal to) |
| </span>Le(<span class="macro">Token!</span>[<=]), |
| <span class="doccomment">/// The `!=` operator (not equal to) |
| </span>Ne(<span class="macro">Token!</span>[!=]), |
| <span class="doccomment">/// The `>=` operator (greater than or equal to) |
| </span>Ge(<span class="macro">Token!</span>[>=]), |
| <span class="doccomment">/// The `>` operator (greater than) |
| </span>Gt(<span class="macro">Token!</span>[>]), |
| <span class="doccomment">/// The `+=` operator |
| </span>AddAssign(<span class="macro">Token!</span>[+=]), |
| <span class="doccomment">/// The `-=` operator |
| </span>SubAssign(<span class="macro">Token!</span>[-=]), |
| <span class="doccomment">/// The `*=` operator |
| </span>MulAssign(<span class="macro">Token!</span>[<span class="kw-2">*</span>=]), |
| <span class="doccomment">/// The `/=` operator |
| </span>DivAssign(<span class="macro">Token!</span>[/=]), |
| <span class="doccomment">/// The `%=` operator |
| </span>RemAssign(<span class="macro">Token!</span>[%=]), |
| <span class="doccomment">/// The `^=` operator |
| </span>BitXorAssign(<span class="macro">Token!</span>[^=]), |
| <span class="doccomment">/// The `&=` operator |
| </span>BitAndAssign(<span class="macro">Token!</span>[&=]), |
| <span class="doccomment">/// The `|=` operator |
| </span>BitOrAssign(<span class="macro">Token!</span>[|=]), |
| <span class="doccomment">/// The `<<=` operator |
| </span>ShlAssign(<span class="macro">Token!</span>[<<=]), |
| <span class="doccomment">/// The `>>=` operator |
| </span>ShrAssign(<span class="macro">Token!</span>[>>=]), |
| } |
| } |
| |
| <span class="macro">ast_enum! </span>{ |
| <span class="doccomment">/// A unary operator: `*`, `!`, `-`. |
| </span><span class="attribute">#[cfg_attr(doc_cfg, doc(cfg(any(feature = <span class="string">"full"</span>, feature = <span class="string">"derive"</span>))))] |
| #[non_exhaustive] |
| </span><span class="kw">pub enum </span>UnOp { |
| <span class="doccomment">/// The `*` operator for dereferencing |
| </span>Deref(<span class="macro">Token!</span>[<span class="kw-2">*</span>]), |
| <span class="doccomment">/// The `!` operator for logical inversion |
| </span>Not(<span class="macro">Token!</span>[!]), |
| <span class="doccomment">/// The `-` operator for negation |
| </span>Neg(<span class="macro">Token!</span>[-]), |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"parsing"</span>)] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">mod </span>parsing { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| <span class="kw">use </span><span class="kw">crate</span>::parse::{Parse, ParseStream, <span class="prelude-ty">Result</span>}; |
| |
| <span class="kw">fn </span>parse_binop(input: ParseStream) -> <span class="prelude-ty">Result</span><BinOp> { |
| <span class="kw">if </span>input.peek(<span class="macro">Token!</span>[&&]) { |
| input.parse().map(BinOp::And) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[||]) { |
| input.parse().map(BinOp::Or) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[<<]) { |
| input.parse().map(BinOp::Shl) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[>>]) { |
| input.parse().map(BinOp::Shr) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[==]) { |
| input.parse().map(BinOp::Eq) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[<=]) { |
| input.parse().map(BinOp::Le) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[!=]) { |
| input.parse().map(BinOp::Ne) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[>=]) { |
| input.parse().map(BinOp::Ge) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[+]) { |
| input.parse().map(BinOp::Add) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[-]) { |
| input.parse().map(BinOp::Sub) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[<span class="kw-2">*</span>]) { |
| input.parse().map(BinOp::Mul) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[/]) { |
| input.parse().map(BinOp::Div) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[%]) { |
| input.parse().map(BinOp::Rem) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[^]) { |
| input.parse().map(BinOp::BitXor) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[<span class="kw-2">&</span>]) { |
| input.parse().map(BinOp::BitAnd) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[|]) { |
| input.parse().map(BinOp::BitOr) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[<]) { |
| input.parse().map(BinOp::Lt) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[>]) { |
| input.parse().map(BinOp::Gt) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">Err</span>(input.error(<span class="string">"expected binary operator"</span>)) |
| } |
| } |
| |
| <span class="attribute">#[cfg_attr(doc_cfg, doc(cfg(feature = <span class="string">"parsing"</span>)))] |
| </span><span class="kw">impl </span>Parse <span class="kw">for </span>BinOp { |
| <span class="attribute">#[cfg(not(feature = <span class="string">"full"</span>))] |
| </span><span class="kw">fn </span>parse(input: ParseStream) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>> { |
| parse_binop(input) |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"full"</span>)] |
| </span><span class="kw">fn </span>parse(input: ParseStream) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>> { |
| <span class="kw">if </span>input.peek(<span class="macro">Token!</span>[+=]) { |
| input.parse().map(BinOp::AddAssign) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[-=]) { |
| input.parse().map(BinOp::SubAssign) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[<span class="kw-2">*</span>=]) { |
| input.parse().map(BinOp::MulAssign) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[/=]) { |
| input.parse().map(BinOp::DivAssign) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[%=]) { |
| input.parse().map(BinOp::RemAssign) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[^=]) { |
| input.parse().map(BinOp::BitXorAssign) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[&=]) { |
| input.parse().map(BinOp::BitAndAssign) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[|=]) { |
| input.parse().map(BinOp::BitOrAssign) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[<<=]) { |
| input.parse().map(BinOp::ShlAssign) |
| } <span class="kw">else if </span>input.peek(<span class="macro">Token!</span>[>>=]) { |
| input.parse().map(BinOp::ShrAssign) |
| } <span class="kw">else </span>{ |
| parse_binop(input) |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg_attr(doc_cfg, doc(cfg(feature = <span class="string">"parsing"</span>)))] |
| </span><span class="kw">impl </span>Parse <span class="kw">for </span>UnOp { |
| <span class="kw">fn </span>parse(input: ParseStream) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>> { |
| <span class="kw">let </span>lookahead = input.lookahead1(); |
| <span class="kw">if </span>lookahead.peek(<span class="macro">Token!</span>[<span class="kw-2">*</span>]) { |
| input.parse().map(UnOp::Deref) |
| } <span class="kw">else if </span>lookahead.peek(<span class="macro">Token!</span>[!]) { |
| input.parse().map(UnOp::Not) |
| } <span class="kw">else if </span>lookahead.peek(<span class="macro">Token!</span>[-]) { |
| input.parse().map(UnOp::Neg) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">Err</span>(lookahead.error()) |
| } |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"printing"</span>)] |
| </span><span class="kw">mod </span>printing { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| <span class="kw">use </span>proc_macro2::TokenStream; |
| <span class="kw">use </span>quote::ToTokens; |
| |
| <span class="attribute">#[cfg_attr(doc_cfg, doc(cfg(feature = <span class="string">"printing"</span>)))] |
| </span><span class="kw">impl </span>ToTokens <span class="kw">for </span>BinOp { |
| <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="kw">match </span><span class="self">self </span>{ |
| BinOp::Add(t) => t.to_tokens(tokens), |
| BinOp::Sub(t) => t.to_tokens(tokens), |
| BinOp::Mul(t) => t.to_tokens(tokens), |
| BinOp::Div(t) => t.to_tokens(tokens), |
| BinOp::Rem(t) => t.to_tokens(tokens), |
| BinOp::And(t) => t.to_tokens(tokens), |
| BinOp::Or(t) => t.to_tokens(tokens), |
| BinOp::BitXor(t) => t.to_tokens(tokens), |
| BinOp::BitAnd(t) => t.to_tokens(tokens), |
| BinOp::BitOr(t) => t.to_tokens(tokens), |
| BinOp::Shl(t) => t.to_tokens(tokens), |
| BinOp::Shr(t) => t.to_tokens(tokens), |
| BinOp::Eq(t) => t.to_tokens(tokens), |
| BinOp::Lt(t) => t.to_tokens(tokens), |
| BinOp::Le(t) => t.to_tokens(tokens), |
| BinOp::Ne(t) => t.to_tokens(tokens), |
| BinOp::Ge(t) => t.to_tokens(tokens), |
| BinOp::Gt(t) => t.to_tokens(tokens), |
| BinOp::AddAssign(t) => t.to_tokens(tokens), |
| BinOp::SubAssign(t) => t.to_tokens(tokens), |
| BinOp::MulAssign(t) => t.to_tokens(tokens), |
| BinOp::DivAssign(t) => t.to_tokens(tokens), |
| BinOp::RemAssign(t) => t.to_tokens(tokens), |
| BinOp::BitXorAssign(t) => t.to_tokens(tokens), |
| BinOp::BitAndAssign(t) => t.to_tokens(tokens), |
| BinOp::BitOrAssign(t) => t.to_tokens(tokens), |
| BinOp::ShlAssign(t) => t.to_tokens(tokens), |
| BinOp::ShrAssign(t) => t.to_tokens(tokens), |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg_attr(doc_cfg, doc(cfg(feature = <span class="string">"printing"</span>)))] |
| </span><span class="kw">impl </span>ToTokens <span class="kw">for </span>UnOp { |
| <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="kw">match </span><span class="self">self </span>{ |
| UnOp::Deref(t) => t.to_tokens(tokens), |
| UnOp::Not(t) => t.to_tokens(tokens), |
| UnOp::Neg(t) => t.to_tokens(tokens), |
| } |
| } |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="syn" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
