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| </pre><pre class="rust"><code><span class="doccomment">/// Define a type that supports parsing and printing a multi-character symbol</span> |
| <span class="doccomment">/// as if it were a punctuation token.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// # Usage</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// ```</span> |
| <span class="doccomment">/// syn::custom_punctuation!(LeftRightArrow, <=>);</span> |
| <span class="doccomment">/// ```</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// The generated syntax tree node supports the following operations just like</span> |
| <span class="doccomment">/// any built-in punctuation token.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// - [Peeking] — `input.peek(LeftRightArrow)`</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// - [Parsing] — `input.parse::<LeftRightArrow>()?`</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// - [Printing] — `quote!( ... #lrarrow ... )`</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// - Construction from a [`Span`] — `let lrarrow = LeftRightArrow(sp)`</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// - Construction from multiple [`Span`] — `let lrarrow = LeftRightArrow([sp, sp, sp])`</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// - Field access to its spans — `let spans = lrarrow.spans`</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// [Peeking]: crate::parse::ParseBuffer::peek</span> |
| <span class="doccomment">/// [Parsing]: crate::parse::ParseBuffer::parse</span> |
| <span class="doccomment">/// [Printing]: quote::ToTokens</span> |
| <span class="doccomment">/// [`Span`]: proc_macro2::Span</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// # Example</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// ```</span> |
| <span class="doccomment">/// use proc_macro2::{TokenStream, TokenTree};</span> |
| <span class="doccomment">/// use syn::parse::{Parse, ParseStream, Peek, Result};</span> |
| <span class="doccomment">/// use syn::punctuated::Punctuated;</span> |
| <span class="doccomment">/// use syn::Expr;</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// syn::custom_punctuation!(PathSeparator, </>);</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// // expr </> expr </> expr ...</span> |
| <span class="doccomment">/// struct PathSegments {</span> |
| <span class="doccomment">/// segments: Punctuated<Expr, PathSeparator>,</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// impl Parse for PathSegments {</span> |
| <span class="doccomment">/// fn parse(input: ParseStream) -> Result<Self> {</span> |
| <span class="doccomment">/// let mut segments = Punctuated::new();</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// let first = parse_until(input, PathSeparator)?;</span> |
| <span class="doccomment">/// segments.push_value(syn::parse2(first)?);</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// while input.peek(PathSeparator) {</span> |
| <span class="doccomment">/// segments.push_punct(input.parse()?);</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// let next = parse_until(input, PathSeparator)?;</span> |
| <span class="doccomment">/// segments.push_value(syn::parse2(next)?);</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// Ok(PathSegments { segments })</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// fn parse_until<E: Peek>(input: ParseStream, end: E) -> Result<TokenStream> {</span> |
| <span class="doccomment">/// let mut tokens = TokenStream::new();</span> |
| <span class="doccomment">/// while !input.is_empty() && !input.peek(end) {</span> |
| <span class="doccomment">/// let next: TokenTree = input.parse()?;</span> |
| <span class="doccomment">/// tokens.extend(Some(next));</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">/// Ok(tokens)</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// fn main() {</span> |
| <span class="doccomment">/// let input = r#" a::b </> c::d::e "#;</span> |
| <span class="doccomment">/// let _: PathSegments = syn::parse_str(input).unwrap();</span> |
| <span class="doccomment">/// }</span> |
| <span class="doccomment">/// ```</span> |
| <span class="attribute">#[<span class="ident">macro_export</span>]</span> |
| <span class="macro">macro_rules!</span> <span class="ident">custom_punctuation</span> { |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span>:<span class="ident">ident</span>, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>:<span class="ident">tt</span>)<span class="op">+</span>) => { |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span> { |
| <span class="kw">pub</span> <span class="ident">spans</span>: <span class="macro-nonterminal">$</span><span class="macro">crate::custom_punctuation_repr!</span>($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>)<span class="op">+</span>), |
| } |
| |
| <span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span> |
| <span class="attribute">#[<span class="ident">allow</span>(<span class="ident">dead_code</span>, <span class="ident">non_snake_case</span>)]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span><span class="op"><</span><span class="ident">__S</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::__private::IntoSpans</span><span class="op"><</span><span class="macro-nonterminal">$</span><span class="macro">crate::custom_punctuation_repr!</span>($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>)<span class="op">+</span>)<span class="op">></span><span class="op">></span>( |
| <span class="ident">spans</span>: <span class="ident">__S</span>, |
| ) -> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span> { |
| <span class="kw">let</span> <span class="ident">_validate_len</span> <span class="op">=</span> <span class="number">0</span> $(<span class="op">+</span> <span class="macro-nonterminal">$</span><span class="macro">crate::custom_punctuation_len!</span>(<span class="macro-nonterminal">strict</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>))<span class="kw-2">*</span>; |
| <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span> { |
| <span class="ident">spans</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::__private::IntoSpans::into_spans</span>(<span class="ident">spans</span>) |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::__private::Default</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span> { |
| <span class="kw">fn</span> <span class="ident">default</span>() -> <span class="self">Self</span> { |
| <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::__private::Span::call_site</span>()) |
| } |
| } |
| |
| <span class="macro-nonterminal">$</span><span class="macro">crate::impl_parse_for_custom_punctuation!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span>, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>)<span class="op">+</span>); |
| <span class="macro-nonterminal">$</span><span class="macro">crate::impl_to_tokens_for_custom_punctuation!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span>, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>)<span class="op">+</span>); |
| <span class="macro-nonterminal">$</span><span class="macro">crate::impl_clone_for_custom_punctuation!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span>, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>)<span class="op">+</span>); |
| <span class="macro-nonterminal">$</span><span class="macro">crate::impl_extra_traits_for_custom_punctuation!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span>, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>)<span class="op">+</span>); |
| }; |
| } |
| |
| <span class="comment">// Not public API.</span> |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"parsing"</span>)]</span> |
| <span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span> |
| <span class="attribute">#[<span class="ident">macro_export</span>]</span> |
| <span class="macro">macro_rules!</span> <span class="ident">impl_parse_for_custom_punctuation</span> { |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span>:<span class="ident">ident</span>, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>:<span class="ident">tt</span>)<span class="op">+</span>) => { |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::token::CustomToken</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span> { |
| <span class="kw">fn</span> <span class="ident">peek</span>(<span class="ident">cursor</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::buffer::Cursor</span>) -> <span class="ident">bool</span> { |
| <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::token::parsing::peek_punct</span>(<span class="ident">cursor</span>, <span class="macro-nonterminal">$</span><span class="macro">crate::stringify_punct!</span>($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>)<span class="op">+</span>)) |
| } |
| |
| <span class="kw">fn</span> <span class="ident">display</span>() -> <span class="kw-2">&</span><span class="lifetime">'static</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::__private::str</span> { |
| <span class="macro">concat!</span>(<span class="string">"`"</span>, <span class="macro-nonterminal">$</span><span class="macro">crate::stringify_punct!</span>($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>)<span class="op">+</span>), <span class="string">"`"</span>) |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::parse::Parse</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span> { |
| <span class="kw">fn</span> <span class="ident">parse</span>(<span class="ident">input</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::parse::ParseStream</span>) -> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::parse::Result</span><span class="op"><</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">spans</span>: <span class="macro-nonterminal">$</span><span class="macro">crate::custom_punctuation_repr!</span>($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>)<span class="op">+</span>) <span class="op">=</span> |
| <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::token::parsing::punct</span>(<span class="ident">input</span>, <span class="macro-nonterminal">$</span><span class="macro">crate::stringify_punct!</span>($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>)<span class="op">+</span>))<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span>(<span class="ident">spans</span>)) |
| } |
| } |
| }; |
| } |
| |
| <span class="comment">// Not public API.</span> |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"parsing"</span>))]</span> |
| <span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span> |
| <span class="attribute">#[<span class="ident">macro_export</span>]</span> |
| <span class="macro">macro_rules!</span> <span class="ident">impl_parse_for_custom_punctuation</span> { |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span>:<span class="ident">ident</span>, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>:<span class="ident">tt</span>)<span class="op">+</span>) => {}; |
| } |
| |
| <span class="comment">// Not public API.</span> |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"printing"</span>)]</span> |
| <span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span> |
| <span class="attribute">#[<span class="ident">macro_export</span>]</span> |
| <span class="macro">macro_rules!</span> <span class="ident">impl_to_tokens_for_custom_punctuation</span> { |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span>:<span class="ident">ident</span>, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>:<span class="ident">tt</span>)<span class="op">+</span>) => { |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::__private::ToTokens</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span> { |
| <span class="kw">fn</span> <span class="ident">to_tokens</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">tokens</span>: <span class="kw-2">&mut</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::__private::TokenStream2</span>) { |
| <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::token::printing::punct</span>(<span class="macro-nonterminal">$</span><span class="macro">crate::stringify_punct!</span>($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>)<span class="op">+</span>), <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">spans</span>, <span class="ident">tokens</span>) |
| } |
| } |
| }; |
| } |
| |
| <span class="comment">// Not public API.</span> |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"printing"</span>))]</span> |
| <span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span> |
| <span class="attribute">#[<span class="ident">macro_export</span>]</span> |
| <span class="macro">macro_rules!</span> <span class="ident">impl_to_tokens_for_custom_punctuation</span> { |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span>:<span class="ident">ident</span>, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>:<span class="ident">tt</span>)<span class="op">+</span>) => {}; |
| } |
| |
| <span class="comment">// Not public API.</span> |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"clone-impls"</span>)]</span> |
| <span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span> |
| <span class="attribute">#[<span class="ident">macro_export</span>]</span> |
| <span class="macro">macro_rules!</span> <span class="ident">impl_clone_for_custom_punctuation</span> { |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span>:<span class="ident">ident</span>, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>:<span class="ident">tt</span>)<span class="op">+</span>) => { |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::__private::Copy</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span> {} |
| |
| <span class="attribute">#[<span class="ident">allow</span>(<span class="ident">clippy::expl_impl_clone_on_copy</span>)]</span> |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::__private::Clone</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span> { |
| <span class="kw">fn</span> <span class="ident">clone</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self</span> { |
| <span class="kw-2">*</span><span class="self">self</span> |
| } |
| } |
| }; |
| } |
| |
| <span class="comment">// Not public API.</span> |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"clone-impls"</span>))]</span> |
| <span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span> |
| <span class="attribute">#[<span class="ident">macro_export</span>]</span> |
| <span class="macro">macro_rules!</span> <span class="ident">impl_clone_for_custom_punctuation</span> { |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span>:<span class="ident">ident</span>, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>:<span class="ident">tt</span>)<span class="op">+</span>) => {}; |
| } |
| |
| <span class="comment">// Not public API.</span> |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"extra-traits"</span>)]</span> |
| <span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span> |
| <span class="attribute">#[<span class="ident">macro_export</span>]</span> |
| <span class="macro">macro_rules!</span> <span class="ident">impl_extra_traits_for_custom_punctuation</span> { |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span>:<span class="ident">ident</span>, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>:<span class="ident">tt</span>)<span class="op">+</span>) => { |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::__private::Debug</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span> { |
| <span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&mut</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::__private::Formatter</span>) -> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::__private::fmt::Result</span> { |
| <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::__private::Formatter::write_str</span>(<span class="ident">f</span>, <span class="macro">stringify!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span>)) |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::__private::Eq</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span> {} |
| |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::__private::PartialEq</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span> { |
| <span class="kw">fn</span> <span class="ident">eq</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">_other</span>: <span class="kw-2">&</span><span class="self">Self</span>) -> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::__private::bool</span> { |
| <span class="bool-val">true</span> |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::__private::Hash</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span> { |
| <span class="kw">fn</span> <span class="ident">hash</span><span class="op"><</span><span class="ident">__H</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::__private::Hasher</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">_state</span>: <span class="kw-2">&mut</span> <span class="ident">__H</span>) {} |
| } |
| }; |
| } |
| |
| <span class="comment">// Not public API.</span> |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"extra-traits"</span>))]</span> |
| <span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span> |
| <span class="attribute">#[<span class="ident">macro_export</span>]</span> |
| <span class="macro">macro_rules!</span> <span class="ident">impl_extra_traits_for_custom_punctuation</span> { |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">ident</span>:<span class="ident">ident</span>, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>:<span class="ident">tt</span>)<span class="op">+</span>) => {}; |
| } |
| |
| <span class="comment">// Not public API.</span> |
| <span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span> |
| <span class="attribute">#[<span class="ident">macro_export</span>]</span> |
| <span class="macro">macro_rules!</span> <span class="ident">custom_punctuation_repr</span> { |
| ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>:<span class="ident">tt</span>)<span class="op">+</span>) => { |
| [<span class="macro-nonterminal">$</span><span class="macro-nonterminal">crate::__private::Span</span>; <span class="number">0</span> $(<span class="op">+</span> <span class="macro-nonterminal">$</span><span class="macro">crate::custom_punctuation_len!</span>(<span class="macro-nonterminal">lenient</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>))<span class="op">+</span>] |
| }; |
| } |
| |
| <span class="comment">// Not public API.</span> |
| <span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span> |
| <span class="attribute">#[<span class="ident">macro_export</span>]</span> |
| <span class="attribute">#[<span class="ident">rustfmt::skip</span>]</span> |
| <span class="macro">macro_rules!</span> <span class="ident">custom_punctuation_len</span> { |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">+</span>) => { <span class="number">1</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">+</span><span class="op">=</span>) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="kw-2">&</span>) => { <span class="number">1</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">&&</span>) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">&=</span>) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, @) => { <span class="number">1</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">!</span>) => { <span class="number">1</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">^</span>) => { <span class="number">1</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">^</span><span class="op">=</span>) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, :) => { <span class="number">1</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, ::) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, ,) => { <span class="number">1</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">/</span>) => { <span class="number">1</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">/</span><span class="op">=</span>) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, .) => { <span class="number">1</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, ..) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, ...) => { <span class="number">3</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, ..<span class="op">=</span>) => { <span class="number">3</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">=</span>) => { <span class="number">1</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">==</span>) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">></span><span class="op">=</span>) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">></span>) => { <span class="number">1</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op"><</span><span class="op">=</span>) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op"><</span>) => { <span class="number">1</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="kw-2">*</span><span class="op">=</span>) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">!</span><span class="op">=</span>) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">|</span>) => { <span class="number">1</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">|</span><span class="op">=</span>) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">|</span><span class="op">|</span>) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, #) => { <span class="number">1</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="question-mark">?</span>) => { <span class="number">1</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, ->) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op"><</span><span class="op">-</span>) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">%</span>) => { <span class="number">1</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">%</span><span class="op">=</span>) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, =>) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, ;) => { <span class="number">1</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op"><</span><span class="op"><</span>) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op"><</span><span class="op"><</span><span class="op">=</span>) => { <span class="number">3</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">></span><span class="op">></span>) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">></span><span class="op">></span><span class="op">=</span>) => { <span class="number">3</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="kw-2">*</span>) => { <span class="number">1</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">-</span>) => { <span class="number">1</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, <span class="op">-</span><span class="op">=</span>) => { <span class="number">2</span> }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">mode</span>:<span class="ident">ident</span>, ~) => { <span class="number">1</span> }; |
| (<span class="ident">lenient</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>:<span class="ident">tt</span>) => { <span class="number">0</span> }; |
| (<span class="ident">strict</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>:<span class="ident">tt</span>) => {{ <span class="macro-nonterminal">$</span><span class="macro">crate::custom_punctuation_unexpected!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>); <span class="number">0</span> }}; |
| } |
| |
| <span class="comment">// Not public API.</span> |
| <span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span> |
| <span class="attribute">#[<span class="ident">macro_export</span>]</span> |
| <span class="macro">macro_rules!</span> <span class="ident">custom_punctuation_unexpected</span> { |
| () => {}; |
| } |
| |
| <span class="comment">// Not public API.</span> |
| <span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span> |
| <span class="attribute">#[<span class="ident">macro_export</span>]</span> |
| <span class="macro">macro_rules!</span> <span class="ident">stringify_punct</span> { |
| ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>:<span class="ident">tt</span>)<span class="op">+</span>) => { |
| <span class="macro">concat!</span>($(<span class="macro">stringify!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">tt</span>)),<span class="op">+</span>) |
| }; |
| } |
| </code></pre></div> |
| </section><section id="search" class="content hidden"></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="1.60.0-nightly (1bd4fdc94 2022-01-12)" ></div> |
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