Fix unary minus highlighting

2020-10-25 23:05:30 +01:00
parent 91c1af3612
commit c9af469b85
3 changed files with 14 additions and 1 deletions
--- a/crates/ide/src/syntax_highlighting.rs
+++ b/crates/ide/src/syntax_highlighting.rs
@@ -579,7 +579,14 @@ fn highlight_element(
                }
            }
            T![-] if element.parent().and_then(ast::PrefixExpr::cast).is_some() => {
-                HighlightTag::NumericLiteral.into()
+                let prefix_expr = element.parent().and_then(ast::PrefixExpr::cast)?;
+
+                let expr = prefix_expr.expr()?;
+                match expr {
+                    ast::Expr::Literal(_) => HighlightTag::NumericLiteral,
+                    _ => HighlightTag::Operator,
+                }
+                .into()
            }
            _ if element.parent().and_then(ast::PrefixExpr::cast).is_some() => {
                HighlightTag::Operator.into()