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Remove syntax highlighting hack for builtin attrs

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This commit is contained in:
Lukas Wirth 2021-12-03 16:53:30 +01:00
parent e58af219a4
commit d1677f3286
13 changed files with 62 additions and 83 deletions
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50
crates/ide/src/syntax_highlighting/highlight.rs
View file

@ -208,22 +208,14 @@ fn node(
},
// Highlight references like the definitions they resolve to
ast::NameRef(name_ref) => {
if node.ancestors().any(|it| it.kind() == ATTR) {
// FIXME: We highlight paths in attributes slightly differently to work around this module
// currently not knowing about tool attributes and rustc builtin attributes as
// we do not want to resolve those to functions that may be defined in scope.
highlight_name_ref_in_attr(sema, name_ref)
} else {
highlight_name_ref(
sema,
krate,
bindings_shadow_count,
&mut binding_hash,
syntactic_name_ref_highlighting,
name_ref,
)
}
highlight_name_ref(
sema,
krate,
bindings_shadow_count,
&mut binding_hash,
syntactic_name_ref_highlighting,
name_ref,
)
},
ast::Lifetime(lifetime) => {
match NameClass::classify_lifetime(sema, &lifetime) {
@ -243,28 +235,6 @@ fn node(
Some((highlight, binding_hash))
}
fn highlight_name_ref_in_attr(sema: &Semantics<RootDatabase>, name_ref: ast::NameRef) -> Highlight {
match NameRefClass::classify(sema, &name_ref) {
Some(name_class) => match name_class {
NameRefClass::Definition(Definition::Module(_))
if name_ref
.syntax()
.ancestors()
.find_map(ast::Path::cast)
.map_or(false, |it| it.parent_path().is_some()) =>
{
HlTag::Symbol(SymbolKind::Module)
}
NameRefClass::Definition(Definition::Macro(m)) if m.kind() == hir::MacroKind::Attr => {
HlTag::Symbol(SymbolKind::Macro)
}
_ => HlTag::BuiltinAttr,
},
None => HlTag::BuiltinAttr,
}
.into()
}
fn highlight_name_ref(
sema: &Semantics<RootDatabase>,
krate: Option<hir::Crate>,
@ -542,8 +512,8 @@ fn highlight_def(
h
}
Definition::Label(_) => Highlight::new(HlTag::Symbol(SymbolKind::Label)),
Definition::BuiltinAttr(_) => Highlight::new(HlTag::Symbol(SymbolKind::Label)), // FIXME
Definition::Tool(_) => Highlight::new(HlTag::Symbol(SymbolKind::Label)), // FIXME
Definition::BuiltinAttr(_) => Highlight::new(HlTag::Symbol(SymbolKind::BuiltinAttr)),
Definition::Tool(_) => Highlight::new(HlTag::Symbol(SymbolKind::Tool)),
};
let famous_defs = FamousDefs(sema, krate);

4
crates/ide/src/syntax_highlighting/inject.rs
View file

@ -263,8 +263,8 @@ fn module_def_to_hl_tag(def: Definition) -> HlTag {
hir::GenericParam::ConstParam(_) => SymbolKind::ConstParam,
},
Definition::Label(_) => SymbolKind::Label,
Definition::BuiltinAttr(_) => SymbolKind::Label, // FIXME
Definition::Tool(_) => SymbolKind::Label, // FIXME
Definition::BuiltinAttr(_) => SymbolKind::BuiltinAttr,
Definition::Tool(_) => SymbolKind::Tool,
};
HlTag::Symbol(symbol)
}

30
crates/ide/src/syntax_highlighting/tags.rs
View file

@ -20,7 +20,6 @@ pub enum HlTag {
Attribute,
BoolLiteral,
BuiltinAttr,
BuiltinType,
ByteLiteral,
CharLiteral,
@ -125,30 +124,31 @@ impl HlTag {
fn as_str(self) -> &'static str {
match self {
HlTag::Symbol(symbol) => match symbol {
SymbolKind::BuiltinAttr => "builtin_attr",
SymbolKind::Const => "constant",
SymbolKind::Static => "static",
SymbolKind::ConstParam => "const_param",
SymbolKind::Enum => "enum",
SymbolKind::Variant => "enum_variant",
SymbolKind::Struct => "struct",
SymbolKind::Union => "union",
SymbolKind::Field => "field",
SymbolKind::Module => "module",
SymbolKind::Trait => "trait",
SymbolKind::Function => "function",
SymbolKind::Impl => "self_type",
SymbolKind::Label => "label",
SymbolKind::LifetimeParam => "lifetime",
SymbolKind::Local => "variable",
SymbolKind::Macro => "macro",
SymbolKind::Module => "module",
SymbolKind::SelfParam => "self_keyword",
SymbolKind::Static => "static",
SymbolKind::Struct => "struct",
SymbolKind::Tool => "tool",
SymbolKind::Trait => "trait",
SymbolKind::TypeAlias => "type_alias",
SymbolKind::TypeParam => "type_param",
SymbolKind::ConstParam => "const_param",
SymbolKind::LifetimeParam => "lifetime",
SymbolKind::Macro => "macro",
SymbolKind::Local => "variable",
SymbolKind::Label => "label",
SymbolKind::Union => "union",
SymbolKind::ValueParam => "value_param",
SymbolKind::SelfParam => "self_keyword",
SymbolKind::Impl => "self_type",
SymbolKind::Variant => "enum_variant",
},
HlTag::Attribute => "attribute",
HlTag::BoolLiteral => "bool_literal",
HlTag::BuiltinAttr => "builtin_attr",
HlTag::BuiltinType => "builtin_type",
HlTag::ByteLiteral => "byte_literal",
HlTag::CharLiteral => "char_literal",

10
crates/ide/src/syntax_highlighting/test_data/highlight_doctest.html
View file

@ -72,7 +72,7 @@ pre { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
<span class="comment documentation">/// # Examples</span>
<span class="comment documentation">///</span>
<span class="comment documentation">/// ```</span>
<span class="comment documentation">/// #</span><span class="none injected"> </span><span class="attribute attribute injected">#</span><span class="attribute attribute injected">!</span><span class="attribute attribute injected">[</span><span class="builtin_attr attribute injected">allow</span><span class="parenthesis attribute injected">(</span><span class="none attribute injected">unused_mut</span><span class="parenthesis attribute injected">)</span><span class="attribute attribute injected">]</span>
<span class="comment documentation">/// #</span><span class="none injected"> </span><span class="attribute attribute injected">#</span><span class="attribute attribute injected">!</span><span class="attribute attribute injected">[</span><span class="builtin_attr attribute injected library">allow</span><span class="parenthesis attribute injected">(</span><span class="none attribute injected">unused_mut</span><span class="parenthesis attribute injected">)</span><span class="attribute attribute injected">]</span>
<span class="comment documentation">/// </span><span class="keyword injected">let</span><span class="none injected"> </span><span class="keyword injected">mut</span><span class="none injected"> </span><span class="variable declaration injected mutable">foo</span><span class="colon injected">:</span><span class="none injected"> </span><span class="struct injected">Foo</span><span class="none injected"> </span><span class="operator injected">=</span><span class="none injected"> </span><span class="struct injected">Foo</span><span class="operator injected">::</span><span class="function injected">new</span><span class="parenthesis injected">(</span><span class="parenthesis injected">)</span><span class="semicolon injected">;</span>
<span class="comment documentation">/// ```</span>
<span class="keyword">pub</span> <span class="keyword">const</span> <span class="keyword">fn</span> <span class="function associated declaration public static">new</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="operator">-&gt;</span> <span class="struct">Foo</span> <span class="brace">{</span>
@ -143,12 +143,12 @@ pre { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
<span class="comment documentation">///</span>
<span class="comment documentation">/// ```</span>
<span class="comment documentation">/// </span><span class="keyword control injected">loop</span><span class="none injected"> </span><span class="brace injected">{</span><span class="brace injected">}</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">cfg_attr</span><span class="parenthesis attribute">(</span><span class="none attribute">not</span><span class="parenthesis attribute">(</span><span class="none attribute">feature</span><span class="attribute attribute"> </span><span class="operator attribute">=</span><span class="attribute attribute"> </span><span class="string_literal attribute">"false"</span><span class="parenthesis attribute">)</span><span class="comma attribute">,</span><span class="attribute attribute"> </span><span class="none attribute">doc</span><span class="attribute attribute"> </span><span class="operator attribute">=</span><span class="attribute attribute"> </span><span class="string_literal attribute">"</span><span class="keyword control injected">loop</span><span class="none injected"> </span><span class="brace injected">{</span><span class="brace injected">}</span><span class="string_literal attribute">"</span><span class="parenthesis attribute">)</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">doc</span><span class="attribute attribute"> </span><span class="operator attribute">=</span><span class="attribute attribute"> </span><span class="string_literal attribute">"</span><span class="keyword control injected">loop</span><span class="none injected"> </span><span class="brace injected">{</span><span class="brace injected">}</span><span class="string_literal attribute">"</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute library">cfg_attr</span><span class="parenthesis attribute">(</span><span class="none attribute">not</span><span class="parenthesis attribute">(</span><span class="none attribute">feature</span><span class="attribute attribute"> </span><span class="operator attribute">=</span><span class="attribute attribute"> </span><span class="string_literal attribute">"false"</span><span class="parenthesis attribute">)</span><span class="comma attribute">,</span><span class="attribute attribute"> </span><span class="none attribute">doc</span><span class="attribute attribute"> </span><span class="operator attribute">=</span><span class="attribute attribute"> </span><span class="string_literal attribute">"</span><span class="keyword control injected">loop</span><span class="none injected"> </span><span class="brace injected">{</span><span class="brace injected">}</span><span class="string_literal attribute">"</span><span class="parenthesis attribute">)</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute library">doc</span><span class="attribute attribute"> </span><span class="operator attribute">=</span><span class="attribute attribute"> </span><span class="string_literal attribute">"</span><span class="keyword control injected">loop</span><span class="none injected"> </span><span class="brace injected">{</span><span class="brace injected">}</span><span class="string_literal attribute">"</span><span class="attribute attribute">]</span>
<span class="comment documentation">/// ```</span>
<span class="comment documentation">///</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">cfg_attr</span><span class="parenthesis attribute">(</span><span class="none attribute">feature</span><span class="attribute attribute"> </span><span class="operator attribute">=</span><span class="attribute attribute"> </span><span class="string_literal attribute">"alloc"</span><span class="comma attribute">,</span><span class="attribute attribute"> </span><span class="none attribute">doc</span><span class="attribute attribute"> </span><span class="operator attribute">=</span><span class="attribute attribute"> </span><span class="string_literal attribute">"```rust"</span><span class="parenthesis attribute">)</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">cfg_attr</span><span class="parenthesis attribute">(</span><span class="none attribute">not</span><span class="parenthesis attribute">(</span><span class="none attribute">feature</span><span class="attribute attribute"> </span><span class="operator attribute">=</span><span class="attribute attribute"> </span><span class="string_literal attribute">"alloc"</span><span class="parenthesis attribute">)</span><span class="comma attribute">,</span><span class="attribute attribute"> </span><span class="none attribute">doc</span><span class="attribute attribute"> </span><span class="operator attribute">=</span><span class="attribute attribute"> </span><span class="string_literal attribute">"```ignore"</span><span class="parenthesis attribute">)</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute library">cfg_attr</span><span class="parenthesis attribute">(</span><span class="none attribute">feature</span><span class="attribute attribute"> </span><span class="operator attribute">=</span><span class="attribute attribute"> </span><span class="string_literal attribute">"alloc"</span><span class="comma attribute">,</span><span class="attribute attribute"> </span><span class="none attribute">doc</span><span class="attribute attribute"> </span><span class="operator attribute">=</span><span class="attribute attribute"> </span><span class="string_literal attribute">"```rust"</span><span class="parenthesis attribute">)</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute library">cfg_attr</span><span class="parenthesis attribute">(</span><span class="none attribute">not</span><span class="parenthesis attribute">(</span><span class="none attribute">feature</span><span class="attribute attribute"> </span><span class="operator attribute">=</span><span class="attribute attribute"> </span><span class="string_literal attribute">"alloc"</span><span class="parenthesis attribute">)</span><span class="comma attribute">,</span><span class="attribute attribute"> </span><span class="none attribute">doc</span><span class="attribute attribute"> </span><span class="operator attribute">=</span><span class="attribute attribute"> </span><span class="string_literal attribute">"```ignore"</span><span class="parenthesis attribute">)</span><span class="attribute attribute">]</span>
<span class="comment documentation">/// </span><span class="keyword injected">let</span><span class="none injected"> </span><span class="punctuation injected">_</span><span class="none injected"> </span><span class="operator injected">=</span><span class="none injected"> </span><span class="function injected">example</span><span class="parenthesis injected">(</span><span class="operator injected">&</span><span class="none injected">alloc::</span><span class="macro injected">vec!</span><span class="bracket injected">[</span><span class="numeric_literal injected">1</span><span class="comma injected">,</span><span class="none injected"> </span><span class="numeric_literal injected">2</span><span class="comma injected">,</span><span class="none injected"> </span><span class="numeric_literal injected">3</span><span class="bracket injected">]</span><span class="parenthesis injected">)</span><span class="semicolon injected">;</span>
<span class="comment documentation">/// ```</span>
<span class="keyword">pub</span> <span class="keyword">fn</span> <span class="function declaration public">mix_and_match</span><span class="parenthesis">(</span><span class="parenthesis">)</span> <span class="brace">{</span><span class="brace">}</span>

20
crates/ide/src/syntax_highlighting/test_data/highlight_strings.html
View file

@ -45,14 +45,14 @@ pre { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
<span class="punctuation">$</span>crate<span class="colon">:</span><span class="colon">:</span>io<span class="colon">:</span><span class="colon">:</span>_print<span class="parenthesis">(</span><span class="punctuation">$</span>crate<span class="colon">:</span><span class="colon">:</span>format_args_nl<span class="punctuation">!</span><span class="parenthesis">(</span><span class="punctuation">$</span><span class="parenthesis">(</span><span class="punctuation">$</span>arg<span class="parenthesis">)</span><span class="punctuation">*</span><span class="parenthesis">)</span><span class="parenthesis">)</span><span class="semicolon">;</span>
<span class="brace">}</span><span class="parenthesis">)</span>
<span class="brace">}</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">rustc_builtin_macro</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">macro_export</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute library">rustc_builtin_macro</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute library">macro_export</span><span class="attribute attribute">]</span>
<span class="keyword">macro_rules</span><span class="punctuation">!</span> <span class="macro declaration">format_args</span> <span class="brace">{</span><span class="brace">}</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">rustc_builtin_macro</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">macro_export</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute library">rustc_builtin_macro</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute library">macro_export</span><span class="attribute attribute">]</span>
<span class="keyword">macro_rules</span><span class="punctuation">!</span> <span class="macro declaration">const_format_args</span> <span class="brace">{</span><span class="brace">}</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">rustc_builtin_macro</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">macro_export</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute library">rustc_builtin_macro</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute library">macro_export</span><span class="attribute attribute">]</span>
<span class="keyword">macro_rules</span><span class="punctuation">!</span> <span class="macro declaration">format_args_nl</span> <span class="brace">{</span><span class="brace">}</span>
<span class="keyword">mod</span> <span class="module declaration">panic</span> <span class="brace">{</span>
@ -77,12 +77,12 @@ pre { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
<span class="brace">}</span>
<span class="brace">}</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">rustc_builtin_macro</span><span class="parenthesis attribute">(</span><span class="none attribute">std_panic</span><span class="parenthesis attribute">)</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">macro_export</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute library">rustc_builtin_macro</span><span class="parenthesis attribute">(</span><span class="none attribute">std_panic</span><span class="parenthesis attribute">)</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute library">macro_export</span><span class="attribute attribute">]</span>
<span class="keyword">macro_rules</span><span class="punctuation">!</span> <span class="macro declaration">panic</span> <span class="brace">{</span><span class="brace">}</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">rustc_builtin_macro</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute library">rustc_builtin_macro</span><span class="attribute attribute">]</span>
<span class="keyword">macro_rules</span><span class="punctuation">!</span> <span class="macro declaration">assert</span> <span class="brace">{</span><span class="brace">}</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">rustc_builtin_macro</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute library">rustc_builtin_macro</span><span class="attribute attribute">]</span>
<span class="keyword">macro_rules</span><span class="punctuation">!</span> <span class="macro declaration">asm</span> <span class="brace">{</span><span class="brace">}</span>
<span class="keyword">macro_rules</span><span class="punctuation">!</span> <span class="macro declaration">toho</span> <span class="brace">{</span>

2
crates/ide/src/syntax_highlighting/test_data/highlight_unsafe.html
View file

@ -54,7 +54,7 @@ pre { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
<span class="keyword unsafe">unsafe</span> <span class="keyword">fn</span> <span class="function associated declaration reference unsafe">unsafe_method</span><span class="parenthesis">(</span><span class="operator">&</span><span class="self_keyword declaration reference">self</span><span class="parenthesis">)</span> <span class="brace">{</span><span class="brace">}</span>
<span class="brace">}</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">repr</span><span class="parenthesis attribute">(</span><span class="none attribute">packed</span><span class="parenthesis attribute">)</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute library">repr</span><span class="parenthesis attribute">(</span><span class="none attribute">packed</span><span class="parenthesis attribute">)</span><span class="attribute attribute">]</span>
<span class="keyword">struct</span> <span class="struct declaration">Packed</span> <span class="brace">{</span>
<span class="field declaration">a</span><span class="colon">:</span> <span class="builtin_type">u16</span><span class="comma">,</span>
<span class="brace">}</span>

10
crates/ide/src/syntax_highlighting/test_data/highlighting.html
View file

@ -43,15 +43,15 @@ pre { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
<pre><code><span class="keyword">use</span> <span class="module">inner</span><span class="operator">::</span><span class="brace">{</span><span class="self_keyword">self</span> <span class="keyword">as</span> <span class="module declaration">inner_mod</span><span class="brace">}</span><span class="semicolon">;</span>
<span class="keyword">mod</span> <span class="module declaration">inner</span> <span class="brace">{</span><span class="brace">}</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="module attribute">proc_macros</span><span class="operator attribute">::</span><span class="macro attribute">identity</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="module attribute crate_root library">proc_macros</span><span class="operator attribute">::</span><span class="macro attribute library">identity</span><span class="attribute attribute">]</span>
<span class="keyword">pub</span> <span class="keyword">mod</span> <span class="module declaration public">ops</span> <span class="brace">{</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">lang</span> <span class="operator attribute">=</span> <span class="string_literal attribute">"fn_once"</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute library">lang</span> <span class="operator attribute">=</span> <span class="string_literal attribute">"fn_once"</span><span class="attribute attribute">]</span>
<span class="keyword">pub</span> <span class="keyword">trait</span> <span class="trait declaration public">FnOnce</span><span class="angle">&lt;</span><span class="type_param declaration">Args</span><span class="angle">&gt;</span> <span class="brace">{</span><span class="brace">}</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">lang</span> <span class="operator attribute">=</span> <span class="string_literal attribute">"fn_mut"</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute library">lang</span> <span class="operator attribute">=</span> <span class="string_literal attribute">"fn_mut"</span><span class="attribute attribute">]</span>
<span class="keyword">pub</span> <span class="keyword">trait</span> <span class="trait declaration public">FnMut</span><span class="angle">&lt;</span><span class="type_param declaration">Args</span><span class="angle">&gt;</span><span class="colon">:</span> <span class="trait public">FnOnce</span><span class="angle">&lt;</span><span class="type_param">Args</span><span class="angle">&gt;</span> <span class="brace">{</span><span class="brace">}</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">lang</span> <span class="operator attribute">=</span> <span class="string_literal attribute">"fn"</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute library">lang</span> <span class="operator attribute">=</span> <span class="string_literal attribute">"fn"</span><span class="attribute attribute">]</span>
<span class="keyword">pub</span> <span class="keyword">trait</span> <span class="trait declaration public">Fn</span><span class="angle">&lt;</span><span class="type_param declaration">Args</span><span class="angle">&gt;</span><span class="colon">:</span> <span class="trait public">FnMut</span><span class="angle">&lt;</span><span class="type_param">Args</span><span class="angle">&gt;</span> <span class="brace">{</span><span class="brace">}</span>
<span class="brace">}</span>
@ -86,7 +86,7 @@ proc_macros::<span class="macro">mirror!</span> <span class="brace">{</span>
<span class="brace">}</span>
<span class="brace">}</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="macro attribute">derive</span><span class="parenthesis attribute">(</span><span class="macro attribute default_library library">Copy</span><span class="parenthesis attribute">)</span><span class="attribute attribute">]</span>
<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="macro attribute default_library library">derive</span><span class="parenthesis attribute">(</span><span class="macro attribute default_library library">Copy</span><span class="parenthesis attribute">)</span><span class="attribute attribute">]</span>
<span class="keyword">struct</span> <span class="struct declaration">FooCopy</span> <span class="brace">{</span>
<span class="field declaration">x</span><span class="colon">:</span> <span class="builtin_type">u32</span><span class="comma">,</span>
<span class="brace">}</span>