Syntactic highlighting of NAME_REF for injections

This commit adds a function that tries to determine the syntax highlighting class of NAME_REFs based on the usage.
It is used for highlighting injections (such as highlighting of doctests) as the semantic logic will most of the time result in unresolved references.
It also adds a color to unresolved references in HTML encoding.

1 files changed, 4 insertions, 2 deletions

diff --git a/crates/ra_ide/src/lib.rs b/crates/ra_ide/src/lib.rs
index 28f686767..375da1f45 100644
--- a/crates/ra_ide/src/lib.rs
+++ b/crates/ra_ide/src/lib.rs
@@ -440,12 +440,14 @@ impl Analysis {
 
     /// Computes syntax highlighting for the given file
     pub fn highlight(&self, file_id: FileId) -> Cancelable<Vec<HighlightedRange>> {
-        self.with_db(|db| syntax_highlighting::highlight(db, file_id, None))
+        self.with_db(|db| syntax_highlighting::highlight(db, file_id, None, false))
     }
 
     /// Computes syntax highlighting for the given file range.
     pub fn highlight_range(&self, frange: FileRange) -> Cancelable<Vec<HighlightedRange>> {
-        self.with_db(|db| syntax_highlighting::highlight(db, frange.file_id, Some(frange.range)))
+        self.with_db(|db| {
+            syntax_highlighting::highlight(db, frange.file_id, Some(frange.range), false)
+        })
     }
 
     /// Computes syntax highlighting for the given file.