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| </pre><pre class="rust"><code><span class="kw">use</span> <span class="ident">internals::respan::respan</span>; |
| <span class="kw">use</span> <span class="ident">proc_macro2::Span</span>; |
| <span class="kw">use</span> <span class="ident">quote::ToTokens</span>; |
| <span class="kw">use</span> <span class="ident">std::mem</span>; |
| <span class="kw">use</span> <span class="ident">syn::punctuated::Punctuated</span>; |
| <span class="kw">use</span> <span class="ident">syn</span>::{ |
| <span class="ident">parse_quote</span>, <span class="ident">Data</span>, <span class="ident">DeriveInput</span>, <span class="ident">Expr</span>, <span class="ident">ExprPath</span>, <span class="ident">GenericArgument</span>, <span class="ident">GenericParam</span>, <span class="ident">Generics</span>, <span class="ident">Macro</span>, |
| <span class="ident">Path</span>, <span class="ident">PathArguments</span>, <span class="ident">QSelf</span>, <span class="ident">ReturnType</span>, <span class="ident">Type</span>, <span class="ident">TypeParamBound</span>, <span class="ident">TypePath</span>, <span class="ident">WherePredicate</span>, |
| }; |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">replace_receiver</span>(<span class="ident">input</span>: <span class="kw-2">&mut</span> <span class="ident">DeriveInput</span>) { |
| <span class="kw">let</span> <span class="ident">self_ty</span> <span class="op">=</span> { |
| <span class="kw">let</span> <span class="ident">ident</span> <span class="op">=</span> <span class="kw-2">&</span><span class="ident">input</span>.<span class="ident">ident</span>; |
| <span class="kw">let</span> <span class="ident">ty_generics</span> <span class="op">=</span> <span class="ident">input</span>.<span class="ident">generics</span>.<span class="ident">split_for_impl</span>().<span class="number">1</span>; |
| <span class="macro">parse_quote!</span>(#<span class="ident">ident</span> #<span class="ident">ty_generics</span>) |
| }; |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">visitor</span> <span class="op">=</span> <span class="ident">ReplaceReceiver</span>(<span class="kw-2">&</span><span class="ident">self_ty</span>); |
| <span class="ident">visitor</span>.<span class="ident">visit_generics_mut</span>(<span class="kw-2">&mut</span> <span class="ident">input</span>.<span class="ident">generics</span>); |
| <span class="ident">visitor</span>.<span class="ident">visit_data_mut</span>(<span class="kw-2">&mut</span> <span class="ident">input</span>.<span class="ident">data</span>); |
| } |
| |
| <span class="kw">struct</span> <span class="ident">ReplaceReceiver</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span>(<span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">TypePath</span>); |
| |
| <span class="kw">impl</span> <span class="ident">ReplaceReceiver</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span> { |
| <span class="kw">fn</span> <span class="ident">self_ty</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">span</span>: <span class="ident">Span</span>) -> <span class="ident">TypePath</span> { |
| <span class="kw">let</span> <span class="ident">tokens</span> <span class="op">=</span> <span class="self">self</span>.<span class="number">0</span>.<span class="ident">to_token_stream</span>(); |
| <span class="kw">let</span> <span class="ident">respanned</span> <span class="op">=</span> <span class="ident">respan</span>(<span class="ident">tokens</span>, <span class="ident">span</span>); |
| <span class="ident">syn::parse2</span>(<span class="ident">respanned</span>).<span class="ident">unwrap</span>() |
| } |
| |
| <span class="kw">fn</span> <span class="ident">self_to_qself</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">qself</span>: <span class="kw-2">&mut</span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">QSelf</span><span class="op">></span>, <span class="ident">path</span>: <span class="kw-2">&mut</span> <span class="ident">Path</span>) { |
| <span class="kw">if</span> <span class="ident">path</span>.<span class="ident">leading_colon</span>.<span class="ident">is_some</span>() <span class="op">|</span><span class="op">|</span> <span class="ident">path</span>.<span class="ident">segments</span>[<span class="number">0</span>].<span class="ident">ident</span> <span class="op">!</span><span class="op">=</span> <span class="string">"Self"</span> { |
| <span class="kw">return</span>; |
| } |
| |
| <span class="kw">if</span> <span class="ident">path</span>.<span class="ident">segments</span>.<span class="ident">len</span>() <span class="op">==</span> <span class="number">1</span> { |
| <span class="self">self</span>.<span class="ident">self_to_expr_path</span>(<span class="ident">path</span>); |
| <span class="kw">return</span>; |
| } |
| |
| <span class="kw">let</span> <span class="ident">span</span> <span class="op">=</span> <span class="ident">path</span>.<span class="ident">segments</span>[<span class="number">0</span>].<span class="ident">ident</span>.<span class="ident">span</span>(); |
| <span class="kw-2">*</span><span class="ident">qself</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">QSelf</span> { |
| <span class="ident">lt_token</span>: <span class="macro">Token!</span>[<span class="op"><</span>](<span class="ident">span</span>), |
| <span class="ident">ty</span>: <span class="ident">Box::new</span>(<span class="ident">Type::Path</span>(<span class="self">self</span>.<span class="ident">self_ty</span>(<span class="ident">span</span>))), |
| <span class="ident">position</span>: <span class="number">0</span>, |
| <span class="ident">as_token</span>: <span class="prelude-val">None</span>, |
| <span class="ident">gt_token</span>: <span class="macro">Token!</span>[<span class="op">></span>](<span class="ident">span</span>), |
| }); |
| |
| <span class="ident">path</span>.<span class="ident">leading_colon</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="kw-2">*</span><span class="kw-2">*</span><span class="ident">path</span>.<span class="ident">segments</span>.<span class="ident">pairs</span>().<span class="ident">next</span>().<span class="ident">unwrap</span>().<span class="ident">punct</span>().<span class="ident">unwrap</span>()); |
| |
| <span class="kw">let</span> <span class="ident">segments</span> <span class="op">=</span> <span class="ident">mem::replace</span>(<span class="kw-2">&mut</span> <span class="ident">path</span>.<span class="ident">segments</span>, <span class="ident">Punctuated::new</span>()); |
| <span class="ident">path</span>.<span class="ident">segments</span> <span class="op">=</span> <span class="ident">segments</span>.<span class="ident">into_pairs</span>().<span class="ident">skip</span>(<span class="number">1</span>).<span class="ident">collect</span>(); |
| } |
| |
| <span class="kw">fn</span> <span class="ident">self_to_expr_path</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">path</span>: <span class="kw-2">&mut</span> <span class="ident">Path</span>) { |
| <span class="kw">let</span> <span class="ident">self_ty</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">self_ty</span>(<span class="ident">path</span>.<span class="ident">segments</span>[<span class="number">0</span>].<span class="ident">ident</span>.<span class="ident">span</span>()); |
| <span class="kw">let</span> <span class="ident">variant</span> <span class="op">=</span> <span class="ident">mem::replace</span>(<span class="ident">path</span>, <span class="ident">self_ty</span>.<span class="ident">path</span>); |
| <span class="kw">for</span> <span class="ident">segment</span> <span class="kw">in</span> <span class="kw-2">&mut</span> <span class="ident">path</span>.<span class="ident">segments</span> { |
| <span class="kw">if</span> <span class="kw">let</span> <span class="ident">PathArguments::AngleBracketed</span>(<span class="ident">bracketed</span>) <span class="op">=</span> <span class="kw-2">&mut</span> <span class="ident">segment</span>.<span class="ident">arguments</span> { |
| <span class="kw">if</span> <span class="ident">bracketed</span>.<span class="ident">colon2_token</span>.<span class="ident">is_none</span>() <span class="op">&&</span> <span class="op">!</span><span class="ident">bracketed</span>.<span class="ident">args</span>.<span class="ident">is_empty</span>() { |
| <span class="ident">bracketed</span>.<span class="ident">colon2_token</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="op"><</span><span class="macro">Token!</span>[::]<span class="op">></span><span class="ident">::default</span>()); |
| } |
| } |
| } |
| <span class="kw">if</span> <span class="ident">variant</span>.<span class="ident">segments</span>.<span class="ident">len</span>() <span class="op">></span> <span class="number">1</span> { |
| <span class="ident">path</span>.<span class="ident">segments</span>.<span class="ident">push_punct</span>(<span class="op"><</span><span class="macro">Token!</span>[::]<span class="op">></span><span class="ident">::default</span>()); |
| <span class="ident">path</span>.<span class="ident">segments</span>.<span class="ident">extend</span>(<span class="ident">variant</span>.<span class="ident">segments</span>.<span class="ident">into_pairs</span>().<span class="ident">skip</span>(<span class="number">1</span>)); |
| } |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="ident">ReplaceReceiver</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span> { |
| <span class="comment">// `Self` -> `Receiver`</span> |
| <span class="kw">fn</span> <span class="ident">visit_type_mut</span>(<span class="kw-2">&mut</span> <span class="self">self</span>, <span class="ident">ty</span>: <span class="kw-2">&mut</span> <span class="ident">Type</span>) { |
| <span class="kw">let</span> <span class="ident">span</span> <span class="op">=</span> <span class="kw">if</span> <span class="kw">let</span> <span class="ident">Type::Path</span>(<span class="ident">node</span>) <span class="op">=</span> <span class="ident">ty</span> { |
| <span class="kw">if</span> <span class="ident">node</span>.<span class="ident">qself</span>.<span class="ident">is_none</span>() <span class="op">&&</span> <span class="ident">node</span>.<span class="ident">path</span>.<span class="ident">is_ident</span>(<span class="string">"Self"</span>) { |
| <span class="ident">node</span>.<span class="ident">path</span>.<span class="ident">segments</span>[<span class="number">0</span>].<span class="ident">ident</span>.<span class="ident">span</span>() |
| } <span class="kw">else</span> { |
| <span class="self">self</span>.<span class="ident">visit_type_path_mut</span>(<span class="ident">node</span>); |
| <span class="kw">return</span>; |
| } |
| } <span class="kw">else</span> { |
| <span class="self">self</span>.<span class="ident">visit_type_mut_impl</span>(<span class="ident">ty</span>); |
| <span class="kw">return</span>; |
| }; |
| <span class="kw-2">*</span><span class="ident">ty</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">self_ty</span>(<span class="ident">span</span>).<span class="ident">into</span>(); |
| } |
| |
| <span class="comment">// `Self::Assoc` -> `<Receiver>::Assoc`</span> |
| <span class="kw">fn</span> <span class="ident">visit_type_path_mut</span>(<span class="kw-2">&mut</span> <span class="self">self</span>, <span class="ident">ty</span>: <span class="kw-2">&mut</span> <span class="ident">TypePath</span>) { |
| <span class="kw">if</span> <span class="ident">ty</span>.<span class="ident">qself</span>.<span class="ident">is_none</span>() { |
| <span class="self">self</span>.<span class="ident">self_to_qself</span>(<span class="kw-2">&mut</span> <span class="ident">ty</span>.<span class="ident">qself</span>, <span class="kw-2">&mut</span> <span class="ident">ty</span>.<span class="ident">path</span>); |
| } |
| <span class="self">self</span>.<span class="ident">visit_type_path_mut_impl</span>(<span class="ident">ty</span>); |
| } |
| |
| <span class="comment">// `Self::method` -> `<Receiver>::method`</span> |
| <span class="kw">fn</span> <span class="ident">visit_expr_path_mut</span>(<span class="kw-2">&mut</span> <span class="self">self</span>, <span class="ident">expr</span>: <span class="kw-2">&mut</span> <span class="ident">ExprPath</span>) { |
| <span class="kw">if</span> <span class="ident">expr</span>.<span class="ident">qself</span>.<span class="ident">is_none</span>() { |
| <span class="self">self</span>.<span class="ident">self_to_qself</span>(<span class="kw-2">&mut</span> <span class="ident">expr</span>.<span class="ident">qself</span>, <span class="kw-2">&mut</span> <span class="ident">expr</span>.<span class="ident">path</span>); |
| } |
| <span class="self">self</span>.<span class="ident">visit_expr_path_mut_impl</span>(<span class="ident">expr</span>); |
| } |
| |
| <span class="comment">// Everything below is simply traversing the syntax tree.</span> |
| |
| <span class="kw">fn</span> <span class="ident">visit_type_mut_impl</span>(<span class="kw-2">&mut</span> <span class="self">self</span>, <span class="ident">ty</span>: <span class="kw-2">&mut</span> <span class="ident">Type</span>) { |
| <span class="kw">match</span> <span class="ident">ty</span> { |
| <span class="ident">Type::Array</span>(<span class="ident">ty</span>) => { |
| <span class="self">self</span>.<span class="ident">visit_type_mut</span>(<span class="kw-2">&mut</span> <span class="ident">ty</span>.<span class="ident">elem</span>); |
| <span class="self">self</span>.<span class="ident">visit_expr_mut</span>(<span class="kw-2">&mut</span> <span class="ident">ty</span>.<span class="ident">len</span>); |
| } |
| <span class="ident">Type::BareFn</span>(<span class="ident">ty</span>) => { |
| <span class="kw">for</span> <span class="ident">arg</span> <span class="kw">in</span> <span class="kw-2">&mut</span> <span class="ident">ty</span>.<span class="ident">inputs</span> { |
| <span class="self">self</span>.<span class="ident">visit_type_mut</span>(<span class="kw-2">&mut</span> <span class="ident">arg</span>.<span class="ident">ty</span>); |
| } |
| <span class="self">self</span>.<span class="ident">visit_return_type_mut</span>(<span class="kw-2">&mut</span> <span class="ident">ty</span>.<span class="ident">output</span>); |
| } |
| <span class="ident">Type::Group</span>(<span class="ident">ty</span>) => <span class="self">self</span>.<span class="ident">visit_type_mut</span>(<span class="kw-2">&mut</span> <span class="ident">ty</span>.<span class="ident">elem</span>), |
| <span class="ident">Type::ImplTrait</span>(<span class="ident">ty</span>) => { |
| <span class="kw">for</span> <span class="ident">bound</span> <span class="kw">in</span> <span class="kw-2">&mut</span> <span class="ident">ty</span>.<span class="ident">bounds</span> { |
| <span class="self">self</span>.<span class="ident">visit_type_param_bound_mut</span>(<span class="ident">bound</span>); |
| } |
| } |
| <span class="ident">Type::Macro</span>(<span class="ident">ty</span>) => <span class="self">self</span>.<span class="ident">visit_macro_mut</span>(<span class="kw-2">&mut</span> <span class="ident">ty</span>.<span class="ident">mac</span>), |
| <span class="ident">Type::Paren</span>(<span class="ident">ty</span>) => <span class="self">self</span>.<span class="ident">visit_type_mut</span>(<span class="kw-2">&mut</span> <span class="ident">ty</span>.<span class="ident">elem</span>), |
| <span class="ident">Type::Path</span>(<span class="ident">ty</span>) => { |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">qself</span>) <span class="op">=</span> <span class="kw-2">&mut</span> <span class="ident">ty</span>.<span class="ident">qself</span> { |
| <span class="self">self</span>.<span class="ident">visit_type_mut</span>(<span class="kw-2">&mut</span> <span class="ident">qself</span>.<span class="ident">ty</span>); |
| } |
| <span class="self">self</span>.<span class="ident">visit_path_mut</span>(<span class="kw-2">&mut</span> <span class="ident">ty</span>.<span class="ident">path</span>); |
| } |
| <span class="ident">Type::Ptr</span>(<span class="ident">ty</span>) => <span class="self">self</span>.<span class="ident">visit_type_mut</span>(<span class="kw-2">&mut</span> <span class="ident">ty</span>.<span class="ident">elem</span>), |
| <span class="ident">Type::Reference</span>(<span class="ident">ty</span>) => <span class="self">self</span>.<span class="ident">visit_type_mut</span>(<span class="kw-2">&mut</span> <span class="ident">ty</span>.<span class="ident">elem</span>), |
| <span class="ident">Type::Slice</span>(<span class="ident">ty</span>) => <span class="self">self</span>.<span class="ident">visit_type_mut</span>(<span class="kw-2">&mut</span> <span class="ident">ty</span>.<span class="ident">elem</span>), |
| <span class="ident">Type::TraitObject</span>(<span class="ident">ty</span>) => { |
| <span class="kw">for</span> <span class="ident">bound</span> <span class="kw">in</span> <span class="kw-2">&mut</span> <span class="ident">ty</span>.<span class="ident">bounds</span> { |
| <span class="self">self</span>.<span class="ident">visit_type_param_bound_mut</span>(<span class="ident">bound</span>); |
| } |
| } |
| <span class="ident">Type::Tuple</span>(<span class="ident">ty</span>) => { |
| <span class="kw">for</span> <span class="ident">elem</span> <span class="kw">in</span> <span class="kw-2">&mut</span> <span class="ident">ty</span>.<span class="ident">elems</span> { |
| <span class="self">self</span>.<span class="ident">visit_type_mut</span>(<span class="ident">elem</span>); |
| } |
| } |
| |
| <span class="ident">Type::Infer</span>(<span class="kw">_</span>) <span class="op">|</span> <span class="ident">Type::Never</span>(<span class="kw">_</span>) <span class="op">|</span> <span class="ident">Type::Verbatim</span>(<span class="kw">_</span>) => {} |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span> |
| <span class="ident">Type::__TestExhaustive</span>(<span class="kw">_</span>) => <span class="macro">unimplemented!</span>(), |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">test</span>))]</span> |
| <span class="kw">_</span> => {} |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">visit_type_path_mut_impl</span>(<span class="kw-2">&mut</span> <span class="self">self</span>, <span class="ident">ty</span>: <span class="kw-2">&mut</span> <span class="ident">TypePath</span>) { |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">qself</span>) <span class="op">=</span> <span class="kw-2">&mut</span> <span class="ident">ty</span>.<span class="ident">qself</span> { |
| <span class="self">self</span>.<span class="ident">visit_type_mut</span>(<span class="kw-2">&mut</span> <span class="ident">qself</span>.<span class="ident">ty</span>); |
| } |
| <span class="self">self</span>.<span class="ident">visit_path_mut</span>(<span class="kw-2">&mut</span> <span class="ident">ty</span>.<span class="ident">path</span>); |
| } |
| |
| <span class="kw">fn</span> <span class="ident">visit_expr_path_mut_impl</span>(<span class="kw-2">&mut</span> <span class="self">self</span>, <span class="ident">expr</span>: <span class="kw-2">&mut</span> <span class="ident">ExprPath</span>) { |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">qself</span>) <span class="op">=</span> <span class="kw-2">&mut</span> <span class="ident">expr</span>.<span class="ident">qself</span> { |
| <span class="self">self</span>.<span class="ident">visit_type_mut</span>(<span class="kw-2">&mut</span> <span class="ident">qself</span>.<span class="ident">ty</span>); |
| } |
| <span class="self">self</span>.<span class="ident">visit_path_mut</span>(<span class="kw-2">&mut</span> <span class="ident">expr</span>.<span class="ident">path</span>); |
| } |
| |
| <span class="kw">fn</span> <span class="ident">visit_path_mut</span>(<span class="kw-2">&mut</span> <span class="self">self</span>, <span class="ident">path</span>: <span class="kw-2">&mut</span> <span class="ident">Path</span>) { |
| <span class="kw">for</span> <span class="ident">segment</span> <span class="kw">in</span> <span class="kw-2">&mut</span> <span class="ident">path</span>.<span class="ident">segments</span> { |
| <span class="self">self</span>.<span class="ident">visit_path_arguments_mut</span>(<span class="kw-2">&mut</span> <span class="ident">segment</span>.<span class="ident">arguments</span>); |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">visit_path_arguments_mut</span>(<span class="kw-2">&mut</span> <span class="self">self</span>, <span class="ident">arguments</span>: <span class="kw-2">&mut</span> <span class="ident">PathArguments</span>) { |
| <span class="kw">match</span> <span class="ident">arguments</span> { |
| <span class="ident">PathArguments::None</span> => {} |
| <span class="ident">PathArguments::AngleBracketed</span>(<span class="ident">arguments</span>) => { |
| <span class="kw">for</span> <span class="ident">arg</span> <span class="kw">in</span> <span class="kw-2">&mut</span> <span class="ident">arguments</span>.<span class="ident">args</span> { |
| <span class="kw">match</span> <span class="ident">arg</span> { |
| <span class="ident">GenericArgument::Type</span>(<span class="ident">arg</span>) => <span class="self">self</span>.<span class="ident">visit_type_mut</span>(<span class="ident">arg</span>), |
| <span class="ident">GenericArgument::Binding</span>(<span class="ident">arg</span>) => <span class="self">self</span>.<span class="ident">visit_type_mut</span>(<span class="kw-2">&mut</span> <span class="ident">arg</span>.<span class="ident">ty</span>), |
| <span class="ident">GenericArgument::Lifetime</span>(<span class="kw">_</span>) |
| <span class="op">|</span> <span class="ident">GenericArgument::Constraint</span>(<span class="kw">_</span>) |
| <span class="op">|</span> <span class="ident">GenericArgument::Const</span>(<span class="kw">_</span>) => {} |
| } |
| } |
| } |
| <span class="ident">PathArguments::Parenthesized</span>(<span class="ident">arguments</span>) => { |
| <span class="kw">for</span> <span class="ident">argument</span> <span class="kw">in</span> <span class="kw-2">&mut</span> <span class="ident">arguments</span>.<span class="ident">inputs</span> { |
| <span class="self">self</span>.<span class="ident">visit_type_mut</span>(<span class="ident">argument</span>); |
| } |
| <span class="self">self</span>.<span class="ident">visit_return_type_mut</span>(<span class="kw-2">&mut</span> <span class="ident">arguments</span>.<span class="ident">output</span>); |
| } |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">visit_return_type_mut</span>(<span class="kw-2">&mut</span> <span class="self">self</span>, <span class="ident">return_type</span>: <span class="kw-2">&mut</span> <span class="ident">ReturnType</span>) { |
| <span class="kw">match</span> <span class="ident">return_type</span> { |
| <span class="ident">ReturnType::Default</span> => {} |
| <span class="ident">ReturnType::Type</span>(<span class="kw">_</span>, <span class="ident">output</span>) => <span class="self">self</span>.<span class="ident">visit_type_mut</span>(<span class="ident">output</span>), |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">visit_type_param_bound_mut</span>(<span class="kw-2">&mut</span> <span class="self">self</span>, <span class="ident">bound</span>: <span class="kw-2">&mut</span> <span class="ident">TypeParamBound</span>) { |
| <span class="kw">match</span> <span class="ident">bound</span> { |
| <span class="ident">TypeParamBound::Trait</span>(<span class="ident">bound</span>) => <span class="self">self</span>.<span class="ident">visit_path_mut</span>(<span class="kw-2">&mut</span> <span class="ident">bound</span>.<span class="ident">path</span>), |
| <span class="ident">TypeParamBound::Lifetime</span>(<span class="kw">_</span>) => {} |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">visit_generics_mut</span>(<span class="kw-2">&mut</span> <span class="self">self</span>, <span class="ident">generics</span>: <span class="kw-2">&mut</span> <span class="ident">Generics</span>) { |
| <span class="kw">for</span> <span class="ident">param</span> <span class="kw">in</span> <span class="kw-2">&mut</span> <span class="ident">generics</span>.<span class="ident">params</span> { |
| <span class="kw">match</span> <span class="ident">param</span> { |
| <span class="ident">GenericParam::Type</span>(<span class="ident">param</span>) => { |
| <span class="kw">for</span> <span class="ident">bound</span> <span class="kw">in</span> <span class="kw-2">&mut</span> <span class="ident">param</span>.<span class="ident">bounds</span> { |
| <span class="self">self</span>.<span class="ident">visit_type_param_bound_mut</span>(<span class="ident">bound</span>); |
| } |
| } |
| <span class="ident">GenericParam::Lifetime</span>(<span class="kw">_</span>) <span class="op">|</span> <span class="ident">GenericParam::Const</span>(<span class="kw">_</span>) => {} |
| } |
| } |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">where_clause</span>) <span class="op">=</span> <span class="kw-2">&mut</span> <span class="ident">generics</span>.<span class="ident">where_clause</span> { |
| <span class="kw">for</span> <span class="ident">predicate</span> <span class="kw">in</span> <span class="kw-2">&mut</span> <span class="ident">where_clause</span>.<span class="ident">predicates</span> { |
| <span class="kw">match</span> <span class="ident">predicate</span> { |
| <span class="ident">WherePredicate::Type</span>(<span class="ident">predicate</span>) => { |
| <span class="self">self</span>.<span class="ident">visit_type_mut</span>(<span class="kw-2">&mut</span> <span class="ident">predicate</span>.<span class="ident">bounded_ty</span>); |
| <span class="kw">for</span> <span class="ident">bound</span> <span class="kw">in</span> <span class="kw-2">&mut</span> <span class="ident">predicate</span>.<span class="ident">bounds</span> { |
| <span class="self">self</span>.<span class="ident">visit_type_param_bound_mut</span>(<span class="ident">bound</span>); |
| } |
| } |
| <span class="ident">WherePredicate::Lifetime</span>(<span class="kw">_</span>) <span class="op">|</span> <span class="ident">WherePredicate::Eq</span>(<span class="kw">_</span>) => {} |
| } |
| } |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">visit_data_mut</span>(<span class="kw-2">&mut</span> <span class="self">self</span>, <span class="ident">data</span>: <span class="kw-2">&mut</span> <span class="ident">Data</span>) { |
| <span class="kw">match</span> <span class="ident">data</span> { |
| <span class="ident">Data::Struct</span>(<span class="ident">data</span>) => { |
| <span class="kw">for</span> <span class="ident">field</span> <span class="kw">in</span> <span class="kw-2">&mut</span> <span class="ident">data</span>.<span class="ident">fields</span> { |
| <span class="self">self</span>.<span class="ident">visit_type_mut</span>(<span class="kw-2">&mut</span> <span class="ident">field</span>.<span class="ident">ty</span>); |
| } |
| } |
| <span class="ident">Data::Enum</span>(<span class="ident">data</span>) => { |
| <span class="kw">for</span> <span class="ident">variant</span> <span class="kw">in</span> <span class="kw-2">&mut</span> <span class="ident">data</span>.<span class="ident">variants</span> { |
| <span class="kw">for</span> <span class="ident">field</span> <span class="kw">in</span> <span class="kw-2">&mut</span> <span class="ident">variant</span>.<span class="ident">fields</span> { |
| <span class="self">self</span>.<span class="ident">visit_type_mut</span>(<span class="kw-2">&mut</span> <span class="ident">field</span>.<span class="ident">ty</span>); |
| } |
| } |
| } |
| <span class="ident">Data::Union</span>(<span class="kw">_</span>) => {} |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">visit_expr_mut</span>(<span class="kw-2">&mut</span> <span class="self">self</span>, <span class="ident">expr</span>: <span class="kw-2">&mut</span> <span class="ident">Expr</span>) { |
| <span class="kw">match</span> <span class="ident">expr</span> { |
| <span class="ident">Expr::Binary</span>(<span class="ident">expr</span>) => { |
| <span class="self">self</span>.<span class="ident">visit_expr_mut</span>(<span class="kw-2">&mut</span> <span class="ident">expr</span>.<span class="ident">left</span>); |
| <span class="self">self</span>.<span class="ident">visit_expr_mut</span>(<span class="kw-2">&mut</span> <span class="ident">expr</span>.<span class="ident">right</span>); |
| } |
| <span class="ident">Expr::Call</span>(<span class="ident">expr</span>) => { |
| <span class="self">self</span>.<span class="ident">visit_expr_mut</span>(<span class="kw-2">&mut</span> <span class="ident">expr</span>.<span class="ident">func</span>); |
| <span class="kw">for</span> <span class="ident">arg</span> <span class="kw">in</span> <span class="kw-2">&mut</span> <span class="ident">expr</span>.<span class="ident">args</span> { |
| <span class="self">self</span>.<span class="ident">visit_expr_mut</span>(<span class="ident">arg</span>); |
| } |
| } |
| <span class="ident">Expr::Cast</span>(<span class="ident">expr</span>) => { |
| <span class="self">self</span>.<span class="ident">visit_expr_mut</span>(<span class="kw-2">&mut</span> <span class="ident">expr</span>.<span class="ident">expr</span>); |
| <span class="self">self</span>.<span class="ident">visit_type_mut</span>(<span class="kw-2">&mut</span> <span class="ident">expr</span>.<span class="ident">ty</span>); |
| } |
| <span class="ident">Expr::Field</span>(<span class="ident">expr</span>) => <span class="self">self</span>.<span class="ident">visit_expr_mut</span>(<span class="kw-2">&mut</span> <span class="ident">expr</span>.<span class="ident">base</span>), |
| <span class="ident">Expr::Index</span>(<span class="ident">expr</span>) => { |
| <span class="self">self</span>.<span class="ident">visit_expr_mut</span>(<span class="kw-2">&mut</span> <span class="ident">expr</span>.<span class="ident">expr</span>); |
| <span class="self">self</span>.<span class="ident">visit_expr_mut</span>(<span class="kw-2">&mut</span> <span class="ident">expr</span>.<span class="ident">index</span>); |
| } |
| <span class="ident">Expr::Paren</span>(<span class="ident">expr</span>) => <span class="self">self</span>.<span class="ident">visit_expr_mut</span>(<span class="kw-2">&mut</span> <span class="ident">expr</span>.<span class="ident">expr</span>), |
| <span class="ident">Expr::Path</span>(<span class="ident">expr</span>) => <span class="self">self</span>.<span class="ident">visit_expr_path_mut</span>(<span class="ident">expr</span>), |
| <span class="ident">Expr::Unary</span>(<span class="ident">expr</span>) => <span class="self">self</span>.<span class="ident">visit_expr_mut</span>(<span class="kw-2">&mut</span> <span class="ident">expr</span>.<span class="ident">expr</span>), |
| <span class="kw">_</span> => {} |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">visit_macro_mut</span>(<span class="kw-2">&mut</span> <span class="self">self</span>, <span class="ident">_mac</span>: <span class="kw-2">&mut</span> <span class="ident">Macro</span>) {} |
| } |
| </code></pre></div> |
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