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</pre><pre class="rust ">
<span class="doccomment">/// Literal kind.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// E.g. `"foo"`, `42`, `12.34` or `bool`</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">Clone</span>, <span class="ident">Eq</span>, <span class="ident">PartialEq</span>, <span class="ident">Hash</span>)]</span>
<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">Lit</span> {
<span class="doccomment">/// A string literal (`"foo"`)</span>
<span class="ident">Str</span>(<span class="ident">String</span>, <span class="ident">StrStyle</span>),
<span class="doccomment">/// A byte string (`b"foo"`)</span>
<span class="ident">ByteStr</span>(<span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span>, <span class="ident">StrStyle</span>),
<span class="doccomment">/// A byte char (`b'f'`)</span>
<span class="ident">Byte</span>(<span class="ident">u8</span>),
<span class="doccomment">/// A character literal (`'a'`)</span>
<span class="ident">Char</span>(<span class="ident">char</span>),
<span class="doccomment">/// An integer literal (`1`)</span>
<span class="ident">Int</span>(<span class="ident">u64</span>, <span class="ident">IntTy</span>),
<span class="doccomment">/// A float literal (`1f64` or `1E10f64` or `1.0E10`)</span>
<span class="ident">Float</span>(<span class="ident">String</span>, <span class="ident">FloatTy</span>),
<span class="doccomment">/// A boolean literal</span>
<span class="ident">Bool</span>(<span class="ident">bool</span>),
}
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">Copy</span>, <span class="ident">Clone</span>, <span class="ident">Eq</span>, <span class="ident">PartialEq</span>, <span class="ident">Hash</span>)]</span>
<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">StrStyle</span> {
<span class="doccomment">/// A regular string, like `"foo"`</span>
<span class="ident">Cooked</span>,
<span class="doccomment">/// A raw string, like `r##"foo"##`</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The uint is the number of `#` symbols used</span>
<span class="ident">Raw</span>(<span class="ident">usize</span>),
}
<span class="kw">impl</span> <span class="ident">From</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Lit</span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">input</span>: <span class="ident">String</span>) <span class="op">-></span> <span class="ident">Lit</span> {
<span class="ident">Lit</span>::<span class="ident">Str</span>(<span class="ident">input</span>, <span class="ident">StrStyle</span>::<span class="ident">Cooked</span>)
}
}
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">From</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">str</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Lit</span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">input</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="ident">Lit</span> {
<span class="ident">Lit</span>::<span class="ident">Str</span>(<span class="ident">input</span>.<span class="ident">into</span>(), <span class="ident">StrStyle</span>::<span class="ident">Cooked</span>)
}
}
<span class="kw">impl</span> <span class="ident">From</span><span class="op"><</span><span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">>></span> <span class="kw">for</span> <span class="ident">Lit</span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">input</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span>) <span class="op">-></span> <span class="ident">Lit</span> {
<span class="ident">Lit</span>::<span class="ident">ByteStr</span>(<span class="ident">input</span>, <span class="ident">StrStyle</span>::<span class="ident">Cooked</span>)
}
}
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">From</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'a</span> [<span class="ident">u8</span>]<span class="op">></span> <span class="kw">for</span> <span class="ident">Lit</span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">input</span>: <span class="kw-2">&</span>[<span class="ident">u8</span>]) <span class="op">-></span> <span class="ident">Lit</span> {
<span class="ident">Lit</span>::<span class="ident">ByteStr</span>(<span class="ident">input</span>.<span class="ident">into</span>(), <span class="ident">StrStyle</span>::<span class="ident">Cooked</span>)
}
}
<span class="kw">impl</span> <span class="ident">From</span><span class="op"><</span><span class="ident">char</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Lit</span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">input</span>: <span class="ident">char</span>) <span class="op">-></span> <span class="ident">Lit</span> {
<span class="ident">Lit</span>::<span class="ident">Char</span>(<span class="ident">input</span>)
}
}
<span class="kw">impl</span> <span class="ident">From</span><span class="op"><</span><span class="ident">bool</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Lit</span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">input</span>: <span class="ident">bool</span>) <span class="op">-></span> <span class="ident">Lit</span> {
<span class="ident">Lit</span>::<span class="ident">Bool</span>(<span class="ident">input</span>)
}
}
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">Copy</span>, <span class="ident">Clone</span>, <span class="ident">Eq</span>, <span class="ident">PartialEq</span>, <span class="ident">Hash</span>)]</span>
<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">IntTy</span> {
<span class="ident">Isize</span>,
<span class="ident">I8</span>,
<span class="ident">I16</span>,
<span class="ident">I32</span>,
<span class="ident">I64</span>,
<span class="ident">Usize</span>,
<span class="ident">U8</span>,
<span class="ident">U16</span>,
<span class="ident">U32</span>,
<span class="ident">U64</span>,
<span class="ident">Unsuffixed</span>,
}
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">Copy</span>, <span class="ident">Clone</span>, <span class="ident">Eq</span>, <span class="ident">PartialEq</span>, <span class="ident">Hash</span>)]</span>
<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">FloatTy</span> {
<span class="ident">F32</span>,
<span class="ident">F64</span>,
<span class="ident">Unsuffixed</span>,
}
<span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">impl_from_for_lit</span> {
(<span class="ident">Int</span>, [$(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rust_type</span>:<span class="ident">ty</span> <span class="op">=></span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">syn_type</span>:<span class="ident">expr</span>),<span class="op">+</span>]) <span class="op">=></span> {
$(
<span class="kw">impl</span> <span class="ident">From</span><span class="op"><</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">rust_type</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Lit</span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">input</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">rust_type</span>) <span class="op">-></span> <span class="ident">Lit</span> {
<span class="ident">Lit</span>::<span class="ident">Int</span>(<span class="ident">input</span> <span class="kw">as</span> <span class="ident">u64</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">syn_type</span>)
}
}
)<span class="op">+</span>
};
(<span class="ident">Float</span>, [$(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rust_type</span>:<span class="ident">ty</span> <span class="op">=></span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">syn_type</span>:<span class="ident">expr</span>),<span class="op">+</span>]) <span class="op">=></span> {
$(
<span class="kw">impl</span> <span class="ident">From</span><span class="op"><</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">rust_type</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Lit</span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">input</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">rust_type</span>) <span class="op">-></span> <span class="ident">Lit</span> {
<span class="ident">Lit</span>::<span class="ident">Float</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}"</span>, <span class="ident">input</span>), <span class="macro-nonterminal">$</span><span class="macro-nonterminal">syn_type</span>)
}
}
)<span class="op">+</span>
};
}
<span class="macro">impl_from_for_lit</span><span class="macro">!</span> {<span class="ident">Int</span>, [
<span class="ident">isize</span> <span class="op">=></span> <span class="ident">IntTy</span>::<span class="ident">Isize</span>,
<span class="ident">i8</span> <span class="op">=></span> <span class="ident">IntTy</span>::<span class="ident">I8</span>,
<span class="ident">i16</span> <span class="op">=></span> <span class="ident">IntTy</span>::<span class="ident">I16</span>,
<span class="ident">i32</span> <span class="op">=></span> <span class="ident">IntTy</span>::<span class="ident">I32</span>,
<span class="ident">i64</span> <span class="op">=></span> <span class="ident">IntTy</span>::<span class="ident">I64</span>,
<span class="ident">usize</span> <span class="op">=></span> <span class="ident">IntTy</span>::<span class="ident">Usize</span>,
<span class="ident">u8</span> <span class="op">=></span> <span class="ident">IntTy</span>::<span class="ident">U8</span>,
<span class="ident">u16</span> <span class="op">=></span> <span class="ident">IntTy</span>::<span class="ident">U16</span>,
<span class="ident">u32</span> <span class="op">=></span> <span class="ident">IntTy</span>::<span class="ident">U32</span>,
<span class="ident">u64</span> <span class="op">=></span> <span class="ident">IntTy</span>::<span class="ident">U64</span>
]}
<span class="macro">impl_from_for_lit</span><span class="macro">!</span> {<span class="ident">Float</span>, [
<span class="ident">f32</span> <span class="op">=></span> <span class="ident">FloatTy</span>::<span class="ident">F32</span>,
<span class="ident">f64</span> <span class="op">=></span> <span class="ident">FloatTy</span>::<span class="ident">F64</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">derive</span>(<span class="ident">Debug</span>, <span class="ident">Clone</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">StrLit</span> {
<span class="kw">pub</span> <span class="ident">value</span>: <span class="ident">String</span>,
<span class="kw">pub</span> <span class="ident">style</span>: <span class="ident">StrStyle</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">derive</span>(<span class="ident">Debug</span>, <span class="ident">Clone</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ByteStrLit</span> {
<span class="kw">pub</span> <span class="ident">value</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span>,
<span class="kw">pub</span> <span class="ident">style</span>: <span class="ident">StrStyle</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">derive</span>(<span class="ident">Debug</span>, <span class="ident">Clone</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">IntLit</span> {
<span class="kw">pub</span> <span class="ident">value</span>: <span class="ident">u64</span>,
<span class="kw">pub</span> <span class="ident">suffix</span>: <span class="ident">IntTy</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">derive</span>(<span class="ident">Debug</span>, <span class="ident">Clone</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">FloatLit</span> {
<span class="kw">pub</span> <span class="ident">value</span>: <span class="ident">String</span>,
<span class="kw">pub</span> <span class="ident">suffix</span>: <span class="ident">FloatTy</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="kw">pub</span> <span class="kw">mod</span> <span class="ident">parsing</span> {
<span class="kw">use</span> <span class="kw">super</span>::<span class="kw-2">*</span>;
<span class="kw">use</span> <span class="ident">escape</span>::{<span class="ident">cooked_byte</span>, <span class="ident">cooked_byte_string</span>, <span class="ident">cooked_char</span>, <span class="ident">cooked_string</span>, <span class="ident">raw_string</span>};
<span class="kw">use</span> <span class="ident">synom</span>::<span class="ident">space</span>::<span class="ident">skip_whitespace</span>;
<span class="kw">use</span> <span class="ident">synom</span>::<span class="ident">IResult</span>;
<span class="kw">use</span> <span class="ident">unicode_xid</span>::<span class="ident">UnicodeXID</span>;
<span class="macro">named</span><span class="macro">!</span>(<span class="kw">pub</span> <span class="ident">lit</span> <span class="op">-></span> <span class="ident">Lit</span>, <span class="macro">alt</span><span class="macro">!</span>(
<span class="ident">string</span> <span class="op">=></span> { <span class="op">|</span><span class="ident">StrLit</span> { <span class="ident">value</span>, <span class="ident">style</span> }<span class="op">|</span> <span class="ident">Lit</span>::<span class="ident">Str</span>(<span class="ident">value</span>, <span class="ident">style</span>) }
<span class="op">|</span>
<span class="ident">byte_string</span> <span class="op">=></span> { <span class="op">|</span><span class="ident">ByteStrLit</span> { <span class="ident">value</span>, <span class="ident">style</span> }<span class="op">|</span> <span class="ident">Lit</span>::<span class="ident">ByteStr</span>(<span class="ident">value</span>, <span class="ident">style</span>) }
<span class="op">|</span>
<span class="ident">byte</span> <span class="op">=></span> { <span class="op">|</span><span class="ident">b</span><span class="op">|</span> <span class="ident">Lit</span>::<span class="ident">Byte</span>(<span class="ident">b</span>) }
<span class="op">|</span>
<span class="ident">character</span> <span class="op">=></span> { <span class="op">|</span><span class="ident">ch</span><span class="op">|</span> <span class="ident">Lit</span>::<span class="ident">Char</span>(<span class="ident">ch</span>) }
<span class="op">|</span>
<span class="ident">float</span> <span class="op">=></span> { <span class="op">|</span><span class="ident">FloatLit</span> { <span class="ident">value</span>, <span class="ident">suffix</span> }<span class="op">|</span> <span class="ident">Lit</span>::<span class="ident">Float</span>(<span class="ident">value</span>, <span class="ident">suffix</span>) } <span class="comment">// must be before int</span>
<span class="op">|</span>
<span class="ident">int</span> <span class="op">=></span> { <span class="op">|</span><span class="ident">IntLit</span> { <span class="ident">value</span>, <span class="ident">suffix</span> }<span class="op">|</span> <span class="ident">Lit</span>::<span class="ident">Int</span>(<span class="ident">value</span>, <span class="ident">suffix</span>) }
<span class="op">|</span>
<span class="ident">boolean</span> <span class="op">=></span> { <span class="op">|</span><span class="ident">value</span><span class="op">|</span> <span class="ident">Lit</span>::<span class="ident">Bool</span>(<span class="ident">value</span>) }
));
<span class="macro">named</span><span class="macro">!</span>(<span class="kw">pub</span> <span class="ident">string</span> <span class="op">-></span> <span class="ident">StrLit</span>, <span class="macro">alt</span><span class="macro">!</span>(
<span class="ident">quoted_string</span> <span class="op">=></span> { <span class="op">|</span><span class="ident">s</span><span class="op">|</span> <span class="ident">StrLit</span> { <span class="ident">value</span>: <span class="ident">s</span>, <span class="ident">style</span>: <span class="ident">StrStyle</span>::<span class="ident">Cooked</span> } }
<span class="op">|</span>
<span class="macro">preceded</span><span class="macro">!</span>(
<span class="macro">punct</span><span class="macro">!</span>(<span class="string">"r"</span>),
<span class="ident">raw_string</span>
) <span class="op">=></span> { <span class="op">|</span>(<span class="ident">s</span>, <span class="ident">n</span>)<span class="op">|</span> <span class="ident">StrLit</span> { <span class="ident">value</span>: <span class="ident">s</span>, <span class="ident">style</span>: <span class="ident">StrStyle</span>::<span class="ident">Raw</span>(<span class="ident">n</span>) }}
));
<span class="macro">named</span><span class="macro">!</span>(<span class="kw">pub</span> <span class="ident">quoted_string</span> <span class="op">-></span> <span class="ident">String</span>, <span class="macro">delimited</span><span class="macro">!</span>(
<span class="macro">punct</span><span class="macro">!</span>(<span class="string">"\""</span>),
<span class="ident">cooked_string</span>,
<span class="macro">tag</span><span class="macro">!</span>(<span class="string">"\""</span>)
));
<span class="macro">named</span><span class="macro">!</span>(<span class="kw">pub</span> <span class="ident">byte_string</span> <span class="op">-></span> <span class="ident">ByteStrLit</span>, <span class="macro">alt</span><span class="macro">!</span>(
<span class="macro">delimited</span><span class="macro">!</span>(
<span class="macro">punct</span><span class="macro">!</span>(<span class="string">"b\""</span>),
<span class="ident">cooked_byte_string</span>,
<span class="macro">tag</span><span class="macro">!</span>(<span class="string">"\""</span>)
) <span class="op">=></span> { <span class="op">|</span><span class="ident">vec</span><span class="op">|</span> <span class="ident">ByteStrLit</span> { <span class="ident">value</span>: <span class="ident">vec</span>, <span class="ident">style</span>: <span class="ident">StrStyle</span>::<span class="ident">Cooked</span> } }
<span class="op">|</span>
<span class="macro">preceded</span><span class="macro">!</span>(
<span class="macro">punct</span><span class="macro">!</span>(<span class="string">"br"</span>),
<span class="ident">raw_string</span>
) <span class="op">=></span> { <span class="op">|</span>(<span class="ident">s</span>, <span class="ident">n</span>): (<span class="ident">String</span>, _)<span class="op">|</span> <span class="ident">ByteStrLit</span> { <span class="ident">value</span>: <span class="ident">s</span>.<span class="ident">into_bytes</span>(), <span class="ident">style</span>: <span class="ident">StrStyle</span>::<span class="ident">Raw</span>(<span class="ident">n</span>) } }
));
<span class="macro">named</span><span class="macro">!</span>(<span class="kw">pub</span> <span class="ident">byte</span> <span class="op">-></span> <span class="ident">u8</span>, <span class="macro">do_parse</span><span class="macro">!</span>(
<span class="macro">punct</span><span class="macro">!</span>(<span class="string">"b"</span>) <span class="op">>></span>
<span class="macro">tag</span><span class="macro">!</span>(<span class="string">"'"</span>) <span class="op">>></span>
<span class="ident">b</span>: <span class="ident">cooked_byte</span> <span class="op">>></span>
<span class="macro">tag</span><span class="macro">!</span>(<span class="string">"'"</span>) <span class="op">>></span>
(<span class="ident">b</span>)
));
<span class="macro">named</span><span class="macro">!</span>(<span class="kw">pub</span> <span class="ident">character</span> <span class="op">-></span> <span class="ident">char</span>, <span class="macro">do_parse</span><span class="macro">!</span>(
<span class="macro">punct</span><span class="macro">!</span>(<span class="string">"'"</span>) <span class="op">>></span>
<span class="ident">ch</span>: <span class="ident">cooked_char</span> <span class="op">>></span>
<span class="macro">tag</span><span class="macro">!</span>(<span class="string">"'"</span>) <span class="op">>></span>
(<span class="ident">ch</span>)
));
<span class="macro">named</span><span class="macro">!</span>(<span class="kw">pub</span> <span class="ident">float</span> <span class="op">-></span> <span class="ident">FloatLit</span>, <span class="macro">do_parse</span><span class="macro">!</span>(
<span class="ident">value</span>: <span class="ident">float_string</span> <span class="op">>></span>
<span class="ident">suffix</span>: <span class="macro">alt</span><span class="macro">!</span>(
<span class="macro">tag</span><span class="macro">!</span>(<span class="string">"f32"</span>) <span class="op">=></span> { <span class="op">|</span>_<span class="op">|</span> <span class="ident">FloatTy</span>::<span class="ident">F32</span> }
<span class="op">|</span>
<span class="macro">tag</span><span class="macro">!</span>(<span class="string">"f64"</span>) <span class="op">=></span> { <span class="op">|</span>_<span class="op">|</span> <span class="ident">FloatTy</span>::<span class="ident">F64</span> }
<span class="op">|</span>
<span class="macro">epsilon</span><span class="macro">!</span>() <span class="op">=></span> { <span class="op">|</span>_<span class="op">|</span> <span class="ident">FloatTy</span>::<span class="ident">Unsuffixed</span> }
) <span class="op">>></span>
(<span class="ident">FloatLit</span> { <span class="ident">value</span>: <span class="ident">value</span>, <span class="ident">suffix</span>: <span class="ident">suffix</span> })
));
<span class="macro">named</span><span class="macro">!</span>(<span class="kw">pub</span> <span class="ident">int</span> <span class="op">-></span> <span class="ident">IntLit</span>, <span class="macro">do_parse</span><span class="macro">!</span>(
<span class="ident">value</span>: <span class="ident">digits</span> <span class="op">>></span>
<span class="ident">suffix</span>: <span class="macro">alt</span><span class="macro">!</span>(
<span class="macro">tag</span><span class="macro">!</span>(<span class="string">"isize"</span>) <span class="op">=></span> { <span class="op">|</span>_<span class="op">|</span> <span class="ident">IntTy</span>::<span class="ident">Isize</span> }
<span class="op">|</span>
<span class="macro">tag</span><span class="macro">!</span>(<span class="string">"i8"</span>) <span class="op">=></span> { <span class="op">|</span>_<span class="op">|</span> <span class="ident">IntTy</span>::<span class="ident">I8</span> }
<span class="op">|</span>
<span class="macro">tag</span><span class="macro">!</span>(<span class="string">"i16"</span>) <span class="op">=></span> { <span class="op">|</span>_<span class="op">|</span> <span class="ident">IntTy</span>::<span class="ident">I16</span> }
<span class="op">|</span>
<span class="macro">tag</span><span class="macro">!</span>(<span class="string">"i32"</span>) <span class="op">=></span> { <span class="op">|</span>_<span class="op">|</span> <span class="ident">IntTy</span>::<span class="ident">I32</span> }
<span class="op">|</span>
<span class="macro">tag</span><span class="macro">!</span>(<span class="string">"i64"</span>) <span class="op">=></span> { <span class="op">|</span>_<span class="op">|</span> <span class="ident">IntTy</span>::<span class="ident">I64</span> }
<span class="op">|</span>
<span class="macro">tag</span><span class="macro">!</span>(<span class="string">"usize"</span>) <span class="op">=></span> { <span class="op">|</span>_<span class="op">|</span> <span class="ident">IntTy</span>::<span class="ident">Usize</span> }
<span class="op">|</span>
<span class="macro">tag</span><span class="macro">!</span>(<span class="string">"u8"</span>) <span class="op">=></span> { <span class="op">|</span>_<span class="op">|</span> <span class="ident">IntTy</span>::<span class="ident">U8</span> }
<span class="op">|</span>
<span class="macro">tag</span><span class="macro">!</span>(<span class="string">"u16"</span>) <span class="op">=></span> { <span class="op">|</span>_<span class="op">|</span> <span class="ident">IntTy</span>::<span class="ident">U16</span> }
<span class="op">|</span>
<span class="macro">tag</span><span class="macro">!</span>(<span class="string">"u32"</span>) <span class="op">=></span> { <span class="op">|</span>_<span class="op">|</span> <span class="ident">IntTy</span>::<span class="ident">U32</span> }
<span class="op">|</span>
<span class="macro">tag</span><span class="macro">!</span>(<span class="string">"u64"</span>) <span class="op">=></span> { <span class="op">|</span>_<span class="op">|</span> <span class="ident">IntTy</span>::<span class="ident">U64</span> }
<span class="op">|</span>
<span class="macro">epsilon</span><span class="macro">!</span>() <span class="op">=></span> { <span class="op">|</span>_<span class="op">|</span> <span class="ident">IntTy</span>::<span class="ident">Unsuffixed</span> }
) <span class="op">>></span>
(<span class="ident">IntLit</span> { <span class="ident">value</span>: <span class="ident">value</span>, <span class="ident">suffix</span>: <span class="ident">suffix</span> })
));
<span class="macro">named</span><span class="macro">!</span>(<span class="kw">pub</span> <span class="ident">boolean</span> <span class="op">-></span> <span class="ident">bool</span>, <span class="macro">alt</span><span class="macro">!</span>(
<span class="macro">keyword</span><span class="macro">!</span>(<span class="string">"true"</span>) <span class="op">=></span> { <span class="op">|</span>_<span class="op">|</span> <span class="bool-val">true</span> }
<span class="op">|</span>
<span class="macro">keyword</span><span class="macro">!</span>(<span class="string">"false"</span>) <span class="op">=></span> { <span class="op">|</span>_<span class="op">|</span> <span class="bool-val">false</span> }
));
<span class="kw">fn</span> <span class="ident">float_string</span>(<span class="kw-2">mut</span> <span class="ident">input</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="ident">IResult</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">String</span><span class="op">></span> {
<span class="ident">input</span> <span class="op">=</span> <span class="ident">skip_whitespace</span>(<span class="ident">input</span>);
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">chars</span> <span class="op">=</span> <span class="ident">input</span>.<span class="ident">chars</span>().<span class="ident">peekable</span>();
<span class="kw">match</span> <span class="ident">chars</span>.<span class="ident">next</span>() {
<span class="prelude-val">Some</span>(<span class="ident">ch</span>) <span class="kw">if</span> <span class="ident">ch</span> <span class="op">>=</span> <span class="string">'0'</span> <span class="op">&&</span> <span class="ident">ch</span> <span class="op"><=</span> <span class="string">'9'</span> <span class="op">=></span> {}
_ <span class="op">=></span> <span class="kw">return</span> <span class="ident">IResult</span>::<span class="ident">Error</span>,
}
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">len</span> <span class="op">=</span> <span class="number">1</span>;
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">has_dot</span> <span class="op">=</span> <span class="bool-val">false</span>;
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">has_exp</span> <span class="op">=</span> <span class="bool-val">false</span>;
<span class="kw">while</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="ident">ch</span>) <span class="op">=</span> <span class="ident">chars</span>.<span class="ident">peek</span>() {
<span class="kw">match</span> <span class="ident">ch</span> {
<span class="string">'0'</span>...<span class="string">'9'</span> <span class="op">|</span> <span class="string">'_'</span> <span class="op">=></span> {
<span class="ident">chars</span>.<span class="ident">next</span>();
<span class="ident">len</span> <span class="op">+=</span> <span class="number">1</span>;
}
<span class="string">'.'</span> <span class="op">=></span> {
<span class="kw">if</span> <span class="ident">has_dot</span> {
<span class="kw">break</span>;
}
<span class="ident">chars</span>.<span class="ident">next</span>();
<span class="kw">if</span> <span class="ident">chars</span>.<span class="ident">peek</span>()
.<span class="ident">map</span>(<span class="op">|</span><span class="kw-2">&</span><span class="ident">ch</span><span class="op">|</span> <span class="ident">ch</span> <span class="op">==</span> <span class="string">'.'</span> <span class="op">||</span> <span class="ident">UnicodeXID</span>::<span class="ident">is_xid_start</span>(<span class="ident">ch</span>))
.<span class="ident">unwrap_or</span>(<span class="bool-val">false</span>) {
<span class="kw">return</span> <span class="ident">IResult</span>::<span class="ident">Error</span>;
}
<span class="ident">len</span> <span class="op">+=</span> <span class="number">1</span>;
<span class="ident">has_dot</span> <span class="op">=</span> <span class="bool-val">true</span>;
}
<span class="string">'e'</span> <span class="op">|</span> <span class="string">'E'</span> <span class="op">=></span> {
<span class="ident">chars</span>.<span class="ident">next</span>();
<span class="ident">len</span> <span class="op">+=</span> <span class="number">1</span>;
<span class="ident">has_exp</span> <span class="op">=</span> <span class="bool-val">true</span>;
<span class="kw">break</span>;
}
_ <span class="op">=></span> <span class="kw">break</span>,
}
}
<span class="kw">let</span> <span class="ident">rest</span> <span class="op">=</span> <span class="kw-2">&</span><span class="ident">input</span>[<span class="ident">len</span>..];
<span class="kw">if</span> <span class="op">!</span>(<span class="ident">has_dot</span> <span class="op">||</span> <span class="ident">has_exp</span> <span class="op">||</span> <span class="ident">rest</span>.<span class="ident">starts_with</span>(<span class="string">"f32"</span>) <span class="op">||</span> <span class="ident">rest</span>.<span class="ident">starts_with</span>(<span class="string">"f64"</span>)) {
<span class="kw">return</span> <span class="ident">IResult</span>::<span class="ident">Error</span>;
}
<span class="kw">if</span> <span class="ident">has_exp</span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">has_exp_value</span> <span class="op">=</span> <span class="bool-val">false</span>;
<span class="kw">while</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="ident">ch</span>) <span class="op">=</span> <span class="ident">chars</span>.<span class="ident">peek</span>() {
<span class="kw">match</span> <span class="ident">ch</span> {
<span class="string">'+'</span> <span class="op">|</span> <span class="string">'-'</span> <span class="op">=></span> {
<span class="kw">if</span> <span class="ident">has_exp_value</span> {
<span class="kw">break</span>;
}
<span class="ident">chars</span>.<span class="ident">next</span>();
<span class="ident">len</span> <span class="op">+=</span> <span class="number">1</span>;
}
<span class="string">'0'</span>...<span class="string">'9'</span> <span class="op">=></span> {
<span class="ident">chars</span>.<span class="ident">next</span>();
<span class="ident">len</span> <span class="op">+=</span> <span class="number">1</span>;
<span class="ident">has_exp_value</span> <span class="op">=</span> <span class="bool-val">true</span>;
}
<span class="string">'_'</span> <span class="op">=></span> {
<span class="ident">chars</span>.<span class="ident">next</span>();
<span class="ident">len</span> <span class="op">+=</span> <span class="number">1</span>;
}
_ <span class="op">=></span> <span class="kw">break</span>,
}
}
<span class="kw">if</span> <span class="op">!</span><span class="ident">has_exp_value</span> {
<span class="kw">return</span> <span class="ident">IResult</span>::<span class="ident">Error</span>;
}
}
<span class="ident">IResult</span>::<span class="ident">Done</span>(<span class="kw-2">&</span><span class="ident">input</span>[<span class="ident">len</span>..], <span class="ident">input</span>[..<span class="ident">len</span>].<span class="ident">replace</span>(<span class="string">"_"</span>, <span class="string">""</span>))
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">digits</span>(<span class="kw-2">mut</span> <span class="ident">input</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="ident">IResult</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">u64</span><span class="op">></span> {
<span class="ident">input</span> <span class="op">=</span> <span class="ident">skip_whitespace</span>(<span class="ident">input</span>);
<span class="kw">let</span> <span class="ident">base</span> <span class="op">=</span> <span class="kw">if</span> <span class="ident">input</span>.<span class="ident">starts_with</span>(<span class="string">"0x"</span>) {
<span class="ident">input</span> <span class="op">=</span> <span class="kw-2">&</span><span class="ident">input</span>[<span class="number">2</span>..];
<span class="number">16</span>
} <span class="kw">else</span> <span class="kw">if</span> <span class="ident">input</span>.<span class="ident">starts_with</span>(<span class="string">"0o"</span>) {
<span class="ident">input</span> <span class="op">=</span> <span class="kw-2">&</span><span class="ident">input</span>[<span class="number">2</span>..];
<span class="number">8</span>
} <span class="kw">else</span> <span class="kw">if</span> <span class="ident">input</span>.<span class="ident">starts_with</span>(<span class="string">"0b"</span>) {
<span class="ident">input</span> <span class="op">=</span> <span class="kw-2">&</span><span class="ident">input</span>[<span class="number">2</span>..];
<span class="number">2</span>
} <span class="kw">else</span> {
<span class="number">10</span>
};
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">value</span> <span class="op">=</span> <span class="number">0u64</span>;
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">len</span> <span class="op">=</span> <span class="number">0</span>;
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">empty</span> <span class="op">=</span> <span class="bool-val">true</span>;
<span class="kw">for</span> <span class="ident">b</span> <span class="kw">in</span> <span class="ident">input</span>.<span class="ident">bytes</span>() {
<span class="kw">let</span> <span class="ident">digit</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">b</span> {
<span class="string">b'0'</span>...<span class="string">b'9'</span> <span class="op">=></span> (<span class="ident">b</span> <span class="op">-</span> <span class="string">b'0'</span>) <span class="kw">as</span> <span class="ident">u64</span>,
<span class="string">b'a'</span>...<span class="string">b'f'</span> <span class="op">=></span> <span class="number">10</span> <span class="op">+</span> (<span class="ident">b</span> <span class="op">-</span> <span class="string">b'a'</span>) <span class="kw">as</span> <span class="ident">u64</span>,
<span class="string">b'A'</span>...<span class="string">b'F'</span> <span class="op">=></span> <span class="number">10</span> <span class="op">+</span> (<span class="ident">b</span> <span class="op">-</span> <span class="string">b'A'</span>) <span class="kw">as</span> <span class="ident">u64</span>,
<span class="string">b'_'</span> <span class="op">=></span> {
<span class="kw">if</span> <span class="ident">empty</span> <span class="op">&&</span> <span class="ident">base</span> <span class="op">==</span> <span class="number">10</span> {
<span class="kw">return</span> <span class="ident">IResult</span>::<span class="ident">Error</span>;
}
<span class="ident">len</span> <span class="op">+=</span> <span class="number">1</span>;
<span class="kw">continue</span>;
}
_ <span class="op">=></span> <span class="kw">break</span>,
};
<span class="kw">if</span> <span class="ident">digit</span> <span class="op">>=</span> <span class="ident">base</span> {
<span class="kw">return</span> <span class="ident">IResult</span>::<span class="ident">Error</span>;
}
<span class="ident">value</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">value</span>.<span class="ident">checked_mul</span>(<span class="ident">base</span>) {
<span class="prelude-val">Some</span>(<span class="ident">value</span>) <span class="op">=></span> <span class="ident">value</span>,
<span class="prelude-val">None</span> <span class="op">=></span> <span class="kw">return</span> <span class="ident">IResult</span>::<span class="ident">Error</span>,
};
<span class="ident">value</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">value</span>.<span class="ident">checked_add</span>(<span class="ident">digit</span>) {
<span class="prelude-val">Some</span>(<span class="ident">value</span>) <span class="op">=></span> <span class="ident">value</span>,
<span class="prelude-val">None</span> <span class="op">=></span> <span class="kw">return</span> <span class="ident">IResult</span>::<span class="ident">Error</span>,
};
<span class="ident">len</span> <span class="op">+=</span> <span class="number">1</span>;
<span class="ident">empty</span> <span class="op">=</span> <span class="bool-val">false</span>;
}
<span class="kw">if</span> <span class="ident">empty</span> {
<span class="ident">IResult</span>::<span class="ident">Error</span>
} <span class="kw">else</span> {
<span class="ident">IResult</span>::<span class="ident">Done</span>(<span class="kw-2">&</span><span class="ident">input</span>[<span class="ident">len</span>..], <span class="ident">value</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="kw">mod</span> <span class="ident">printing</span> {
<span class="kw">use</span> <span class="kw">super</span>::<span class="kw-2">*</span>;
<span class="kw">use</span> <span class="ident">quote</span>::{<span class="ident">Tokens</span>, <span class="ident">ToTokens</span>};
<span class="kw">use</span> <span class="ident">std</span>::{<span class="ident">ascii</span>, <span class="ident">iter</span>};
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fmt</span>::{<span class="self">self</span>, <span class="ident">Display</span>};
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">str</span>;
<span class="kw">impl</span> <span class="ident">ToTokens</span> <span class="kw">for</span> <span class="ident">Lit</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">&</span><span class="kw-2">mut</span> <span class="ident">Tokens</span>) {
<span class="kw">match</span> <span class="kw-2">*</span><span class="self">self</span> {
<span class="ident">Lit</span>::<span class="ident">Str</span>(<span class="kw-2">ref</span> <span class="ident">s</span>, <span class="ident">StrStyle</span>::<span class="ident">Cooked</span>) <span class="op">=></span> <span class="ident">s</span>.<span class="ident">to_tokens</span>(<span class="ident">tokens</span>),
<span class="ident">Lit</span>::<span class="ident">Str</span>(<span class="kw-2">ref</span> <span class="ident">s</span>, <span class="ident">StrStyle</span>::<span class="ident">Raw</span>(<span class="ident">n</span>)) <span class="op">=></span> {
<span class="ident">tokens</span>.<span class="ident">append</span>(<span class="kw-2">&</span><span class="macro">format</span><span class="macro">!</span>(<span class="string">"r{delim}\"{string}\"{delim}"</span>,
<span class="ident">delim</span> <span class="op">=</span> <span class="ident">iter</span>::<span class="ident">repeat</span>(<span class="string">"#"</span>).<span class="ident">take</span>(<span class="ident">n</span>).<span class="ident">collect</span>::<span class="op"><</span><span class="ident">String</span><span class="op">></span>(),
<span class="ident">string</span> <span class="op">=</span> <span class="ident">s</span>));
}
<span class="ident">Lit</span>::<span class="ident">ByteStr</span>(<span class="kw-2">ref</span> <span class="ident">v</span>, <span class="ident">StrStyle</span>::<span class="ident">Cooked</span>) <span class="op">=></span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">escaped</span> <span class="op">=</span> <span class="string">"b\""</span>.<span class="ident">to_string</span>();
<span class="kw">for</span> <span class="kw-2">&</span><span class="ident">ch</span> <span class="kw">in</span> <span class="ident">v</span>.<span class="ident">iter</span>() {
<span class="kw">match</span> <span class="ident">ch</span> {
<span class="number">0</span> <span class="op">=></span> <span class="ident">escaped</span>.<span class="ident">push_str</span>(<span class="string">r"\0"</span>),
<span class="string">b'\''</span> <span class="op">=></span> <span class="ident">escaped</span>.<span class="ident">push</span>(<span class="string">'\''</span>),
_ <span class="op">=></span> <span class="ident">escaped</span>.<span class="ident">extend</span>(<span class="ident">ascii</span>::<span class="ident">escape_default</span>(<span class="ident">ch</span>).<span class="ident">map</span>(<span class="op">|</span><span class="ident">c</span><span class="op">|</span> <span class="ident">c</span> <span class="kw">as</span> <span class="ident">char</span>)),
}
}
<span class="ident">escaped</span>.<span class="ident">push</span>(<span class="string">'"'</span>);
<span class="ident">tokens</span>.<span class="ident">append</span>(<span class="kw-2">&</span><span class="ident">escaped</span>);
}
<span class="ident">Lit</span>::<span class="ident">ByteStr</span>(<span class="kw-2">ref</span> <span class="ident">vec</span>, <span class="ident">StrStyle</span>::<span class="ident">Raw</span>(<span class="ident">n</span>)) <span class="op">=></span> {
<span class="ident">tokens</span>.<span class="ident">append</span>(<span class="kw-2">&</span><span class="macro">format</span><span class="macro">!</span>(<span class="string">"br{delim}\"{string}\"{delim}"</span>,
<span class="ident">delim</span> <span class="op">=</span> <span class="ident">iter</span>::<span class="ident">repeat</span>(<span class="string">"#"</span>).<span class="ident">take</span>(<span class="ident">n</span>).<span class="ident">collect</span>::<span class="op"><</span><span class="ident">String</span><span class="op">></span>(),
<span class="ident">string</span> <span class="op">=</span> <span class="ident">str</span>::<span class="ident">from_utf8</span>(<span class="ident">vec</span>).<span class="ident">unwrap</span>()));
}
<span class="ident">Lit</span>::<span class="ident">Byte</span>(<span class="ident">b</span>) <span class="op">=></span> {
<span class="kw">match</span> <span class="ident">b</span> {
<span class="number">0</span> <span class="op">=></span> <span class="ident">tokens</span>.<span class="ident">append</span>(<span class="string">r"b'\0'"</span>),
<span class="string">b'\"'</span> <span class="op">=></span> <span class="ident">tokens</span>.<span class="ident">append</span>(<span class="string">"b'\"'"</span>),
_ <span class="op">=></span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">escaped</span> <span class="op">=</span> <span class="string">"b'"</span>.<span class="ident">to_string</span>();
<span class="ident">escaped</span>.<span class="ident">extend</span>(<span class="ident">ascii</span>::<span class="ident">escape_default</span>(<span class="ident">b</span>).<span class="ident">map</span>(<span class="op">|</span><span class="ident">c</span><span class="op">|</span> <span class="ident">c</span> <span class="kw">as</span> <span class="ident">char</span>));
<span class="ident">escaped</span>.<span class="ident">push</span>(<span class="string">'\''</span>);
<span class="ident">tokens</span>.<span class="ident">append</span>(<span class="kw-2">&</span><span class="ident">escaped</span>);
}
}
}
<span class="ident">Lit</span>::<span class="ident">Char</span>(<span class="ident">ch</span>) <span class="op">=></span> <span class="ident">ch</span>.<span class="ident">to_tokens</span>(<span class="ident">tokens</span>),
<span class="ident">Lit</span>::<span class="ident">Int</span>(<span class="ident">value</span>, <span class="ident">ty</span>) <span class="op">=></span> <span class="ident">tokens</span>.<span class="ident">append</span>(<span class="kw-2">&</span><span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}{}"</span>, <span class="ident">value</span>, <span class="ident">ty</span>)),
<span class="ident">Lit</span>::<span class="ident">Float</span>(<span class="kw-2">ref</span> <span class="ident">value</span>, <span class="ident">ty</span>) <span class="op">=></span> <span class="ident">tokens</span>.<span class="ident">append</span>(<span class="kw-2">&</span><span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}{}"</span>, <span class="ident">value</span>, <span class="ident">ty</span>)),
<span class="ident">Lit</span>::<span class="ident">Bool</span>(<span class="bool-val">true</span>) <span class="op">=></span> <span class="ident">tokens</span>.<span class="ident">append</span>(<span class="string">"true"</span>),
<span class="ident">Lit</span>::<span class="ident">Bool</span>(<span class="bool-val">false</span>) <span class="op">=></span> <span class="ident">tokens</span>.<span class="ident">append</span>(<span class="string">"false"</span>),
}
}
}
<span class="kw">impl</span> <span class="ident">Display</span> <span class="kw">for</span> <span class="ident">IntTy</span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">formatter</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">fmt</span>::<span class="ident">Error</span><span class="op">></span> {
<span class="kw">match</span> <span class="kw-2">*</span><span class="self">self</span> {
<span class="ident">IntTy</span>::<span class="ident">Isize</span> <span class="op">=></span> <span class="ident">formatter</span>.<span class="ident">write_str</span>(<span class="string">"isize"</span>),
<span class="ident">IntTy</span>::<span class="ident">I8</span> <span class="op">=></span> <span class="ident">formatter</span>.<span class="ident">write_str</span>(<span class="string">"i8"</span>),
<span class="ident">IntTy</span>::<span class="ident">I16</span> <span class="op">=></span> <span class="ident">formatter</span>.<span class="ident">write_str</span>(<span class="string">"i16"</span>),
<span class="ident">IntTy</span>::<span class="ident">I32</span> <span class="op">=></span> <span class="ident">formatter</span>.<span class="ident">write_str</span>(<span class="string">"i32"</span>),
<span class="ident">IntTy</span>::<span class="ident">I64</span> <span class="op">=></span> <span class="ident">formatter</span>.<span class="ident">write_str</span>(<span class="string">"i64"</span>),
<span class="ident">IntTy</span>::<span class="ident">Usize</span> <span class="op">=></span> <span class="ident">formatter</span>.<span class="ident">write_str</span>(<span class="string">"usize"</span>),
<span class="ident">IntTy</span>::<span class="ident">U8</span> <span class="op">=></span> <span class="ident">formatter</span>.<span class="ident">write_str</span>(<span class="string">"u8"</span>),
<span class="ident">IntTy</span>::<span class="ident">U16</span> <span class="op">=></span> <span class="ident">formatter</span>.<span class="ident">write_str</span>(<span class="string">"u16"</span>),
<span class="ident">IntTy</span>::<span class="ident">U32</span> <span class="op">=></span> <span class="ident">formatter</span>.<span class="ident">write_str</span>(<span class="string">"u32"</span>),
<span class="ident">IntTy</span>::<span class="ident">U64</span> <span class="op">=></span> <span class="ident">formatter</span>.<span class="ident">write_str</span>(<span class="string">"u64"</span>),
<span class="ident">IntTy</span>::<span class="ident">Unsuffixed</span> <span class="op">=></span> <span class="prelude-val">Ok</span>(()),
}
}
}
<span class="kw">impl</span> <span class="ident">Display</span> <span class="kw">for</span> <span class="ident">FloatTy</span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">formatter</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">fmt</span>::<span class="ident">Error</span><span class="op">></span> {
<span class="kw">match</span> <span class="kw-2">*</span><span class="self">self</span> {
<span class="ident">FloatTy</span>::<span class="ident">F32</span> <span class="op">=></span> <span class="ident">formatter</span>.<span class="ident">write_str</span>(<span class="string">"f32"</span>),
<span class="ident">FloatTy</span>::<span class="ident">F64</span> <span class="op">=></span> <span class="ident">formatter</span>.<span class="ident">write_str</span>(<span class="string">"f64"</span>),
<span class="ident">FloatTy</span>::<span class="ident">Unsuffixed</span> <span class="op">=></span> <span class="prelude-val">Ok</span>(()),
}
}
}
}
</pre>
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