Unnamed repository; edit this file 'description' to name the repository.
Highlight `Self` as a keyword by default
Lukas Wirth 2022-03-06
parent 0bb631b · commit e5bb661
-rw-r--r--crates/ide/src/syntax_highlighting/highlight.rs20
-rw-r--r--crates/ide/src/syntax_highlighting/test_data/highlight_keywords.html53
-rw-r--r--crates/ide/src/syntax_highlighting/tests.rs20
-rw-r--r--crates/syntax/src/ast/node_ext.rs14
-rw-r--r--editors/code/package.json2
5 files changed, 94 insertions, 15 deletions
diff --git a/crates/ide/src/syntax_highlighting/highlight.rs b/crates/ide/src/syntax_highlighting/highlight.rs
index bf532b5bb2..43a3fb2d71 100644
--- a/crates/ide/src/syntax_highlighting/highlight.rs
+++ b/crates/ide/src/syntax_highlighting/highlight.rs
@@ -190,12 +190,13 @@ fn keyword(
T![for] if parent_matches::<ast::ForExpr>(&token) => h | HlMod::ControlFlow,
T![unsafe] => h | HlMod::Unsafe,
T![true] | T![false] => HlTag::BoolLiteral.into(),
- T![Self] => return Some(HlTag::Symbol(SymbolKind::SelfType).into()),
// crate is handled just as a token if it's in an `extern crate`
T![crate] if parent_matches::<ast::ExternCrate>(&token) => h,
- // self, crate and super are handled as either a Name or NameRef already, unless they
+ // self, crate, super and `Self` are handled as either a Name or NameRef already, unless they
// are inside unmapped token trees
- T![self] | T![crate] | T![super] if parent_matches::<ast::NameRef>(&token) => return None,
+ T![self] | T![crate] | T![super] | T![Self] if parent_matches::<ast::NameRef>(&token) => {
+ return None
+ }
T![self] if parent_matches::<ast::Name>(&token) => return None,
T![ref] => match token.parent().and_then(ast::IdentPat::cast) {
Some(ident) if sema.is_unsafe_ident_pat(&ident) => h | HlMod::Unsafe,
@@ -270,12 +271,13 @@ fn highlight_name_ref(
}
NameRefClass::FieldShorthand { .. } => SymbolKind::Field.into(),
};
- if name_ref.self_token().is_some() {
- h.tag = HlTag::Symbol(SymbolKind::SelfParam);
- }
- if name_ref.crate_token().is_some() || name_ref.super_token().is_some() {
- h.tag = HlTag::Keyword;
- }
+
+ h.tag = match name_ref.token_kind() {
+ T![Self] => HlTag::Symbol(SymbolKind::SelfType),
+ T![self] => HlTag::Symbol(SymbolKind::SelfParam),
+ T![super] | T![crate] => HlTag::Keyword,
+ _ => h.tag,
+ };
h
}
diff --git a/crates/ide/src/syntax_highlighting/test_data/highlight_keywords.html b/crates/ide/src/syntax_highlighting/test_data/highlight_keywords.html
new file mode 100644
index 0000000000..7cdeca8e29
--- /dev/null
+++ b/crates/ide/src/syntax_highlighting/test_data/highlight_keywords.html
@@ -0,0 +1,53 @@
+
+<style>
+body { margin: 0; }
+pre { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padding: 0.4em; }
+
+.lifetime { color: #DFAF8F; font-style: italic; }
+.label { color: #DFAF8F; font-style: italic; }
+.comment { color: #7F9F7F; }
+.documentation { color: #629755; }
+.intra_doc_link { font-style: italic; }
+.injected { opacity: 0.65 ; }
+.struct, .enum { color: #7CB8BB; }
+.enum_variant { color: #BDE0F3; }
+.string_literal { color: #CC9393; }
+.field { color: #94BFF3; }
+.function { color: #93E0E3; }
+.function.unsafe { color: #BC8383; }
+.trait.unsafe { color: #BC8383; }
+.operator.unsafe { color: #BC8383; }
+.mutable.unsafe { color: #BC8383; text-decoration: underline; }
+.keyword.unsafe { color: #BC8383; font-weight: bold; }
+.parameter { color: #94BFF3; }
+.text { color: #DCDCCC; }
+.type { color: #7CB8BB; }
+.builtin_type { color: #8CD0D3; }
+.type_param { color: #DFAF8F; }
+.attribute { color: #94BFF3; }
+.numeric_literal { color: #BFEBBF; }
+.bool_literal { color: #BFE6EB; }
+.macro { color: #94BFF3; }
+.derive { color: #94BFF3; font-style: italic; }
+.module { color: #AFD8AF; }
+.value_param { color: #DCDCCC; }
+.variable { color: #DCDCCC; }
+.format_specifier { color: #CC696B; }
+.mutable { text-decoration: underline; }
+.escape_sequence { color: #94BFF3; }
+.keyword { color: #F0DFAF; font-weight: bold; }
+.control { font-style: italic; }
+.reference { font-style: italic; font-weight: bold; }
+
+.unresolved_reference { color: #FC5555; text-decoration: wavy underline; }
+</style>
+<pre><code><span class="keyword">extern</span> <span class="keyword">crate</span> <span class="unresolved_reference">self</span><span class="semicolon">;</span>
+
+<span class="keyword">use</span> <span class="keyword crate_root">crate</span><span class="semicolon">;</span>
+<span class="keyword">use</span> <span class="self_keyword crate_root">self</span><span class="semicolon">;</span>
+<span class="keyword">mod</span> <span class="module declaration">__</span> <span class="brace">{</span>
+ <span class="keyword">use</span> <span class="keyword crate_root">super</span><span class="operator">::</span><span class="punctuation">*</span><span class="semicolon">;</span>
+<span class="brace">}</span>
+
+<span class="keyword">struct</span> <span class="struct declaration">__</span> <span class="keyword">where</span> <span class="self_type_keyword">Self</span><span class="colon">:</span><span class="semicolon">;</span>
+<span class="keyword">fn</span> <span class="function declaration">__</span><span class="parenthesis">(</span><span class="punctuation">_</span><span class="colon">:</span> <span class="unresolved_reference">Self</span><span class="parenthesis">)</span> <span class="brace">{</span><span class="brace">}</span></code></pre> \ No newline at end of file
diff --git a/crates/ide/src/syntax_highlighting/tests.rs b/crates/ide/src/syntax_highlighting/tests.rs
index c14e3330e3..599def0341 100644
--- a/crates/ide/src/syntax_highlighting/tests.rs
+++ b/crates/ide/src/syntax_highlighting/tests.rs
@@ -335,6 +335,26 @@ where
}
#[test]
+fn test_keyword_highlighting() {
+ check_highlighting(
+ r#"
+extern crate self;
+
+use crate;
+use self;
+mod __ {
+ use super::*;
+}
+
+struct __ where Self:;
+fn __(_: Self) {}
+"#,
+ expect_file!["./test_data/highlight_keywords.html"],
+ false,
+ );
+}
+
+#[test]
fn test_string_highlighting() {
// The format string detection is based on macro-expansion,
// thus, we have to copy the macro definition from `std`
diff --git a/crates/syntax/src/ast/node_ext.rs b/crates/syntax/src/ast/node_ext.rs
index 4a3abcb3a9..333ee35d63 100644
--- a/crates/syntax/src/ast/node_ext.rs
+++ b/crates/syntax/src/ast/node_ext.rs
@@ -34,6 +34,10 @@ impl ast::NameRef {
pub fn as_tuple_field(&self) -> Option<usize> {
self.text().parse().ok()
}
+
+ pub fn token_kind(&self) -> SyntaxKind {
+ self.syntax().first_token().map_or(SyntaxKind::ERROR, |it| it.kind())
+ }
}
fn text_of_first_token(node: &SyntaxNode) -> TokenText<'_> {
@@ -215,11 +219,11 @@ impl ast::PathSegment {
pub fn kind(&self) -> Option<PathSegmentKind> {
let res = if let Some(name_ref) = self.name_ref() {
- match name_ref.syntax().first_token().map(|it| it.kind()) {
- Some(T![Self]) => PathSegmentKind::SelfTypeKw,
- Some(T![self]) => PathSegmentKind::SelfKw,
- Some(T![super]) => PathSegmentKind::SuperKw,
- Some(T![crate]) => PathSegmentKind::CrateKw,
+ match name_ref.token_kind() {
+ T![Self] => PathSegmentKind::SelfTypeKw,
+ T![self] => PathSegmentKind::SelfKw,
+ T![super] => PathSegmentKind::SuperKw,
+ T![crate] => PathSegmentKind::CrateKw,
_ => PathSegmentKind::Name(name_ref),
}
} else {
diff --git a/editors/code/package.json b/editors/code/package.json
index fb519be461..4843ea8421 100644
--- a/editors/code/package.json
+++ b/editors/code/package.json
@@ -1297,7 +1297,7 @@
{
"id": "selfTypeKeyword",
"description": "Style for the self type keyword",
- "superType": "typeParameter"
+ "superType": "keyword"
},
{
"id": "semicolon",