1 files changed, 103 insertions, 16 deletions

diff --git a/crates/ra_editor/src/line_index.rs b/crates/ra_editor/src/line_index.rs
index 95d64b8a8..da0f2a7f7 100644
--- a/crates/ra_editor/src/line_index.rs
+++ b/crates/ra_editor/src/line_index.rs
@@ -1,5 +1,5 @@
-use superslice::Ext;
 use crate::TextUnit;
+use superslice::Ext;
 
 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 pub struct LineIndex {
@@ -29,7 +29,10 @@ impl LineIndex {
         let line = self.newlines.upper_bound(&offset) - 1;
         let line_start_offset = self.newlines[line];
         let col = offset - line_start_offset;
-        return LineCol { line: line as u32, col };
+        return LineCol {
+            line: line as u32,
+            col,
+        };
     }
 
     pub fn offset(&self, line_col: LineCol) -> TextUnit {
@@ -42,21 +45,105 @@ impl LineIndex {
 fn test_line_index() {
     let text = "hello\nworld";
     let index = LineIndex::new(text);
-    assert_eq!(index.line_col(0.into()), LineCol { line: 0, col: 0.into() });
-    assert_eq!(index.line_col(1.into()), LineCol { line: 0, col: 1.into() });
-    assert_eq!(index.line_col(5.into()), LineCol { line: 0, col: 5.into() });
-    assert_eq!(index.line_col(6.into()), LineCol { line: 1, col: 0.into() });
-    assert_eq!(index.line_col(7.into()), LineCol { line: 1, col: 1.into() });
-    assert_eq!(index.line_col(8.into()), LineCol { line: 1, col: 2.into() });
-    assert_eq!(index.line_col(10.into()), LineCol { line: 1, col: 4.into() });
-    assert_eq!(index.line_col(11.into()), LineCol { line: 1, col: 5.into() });
-    assert_eq!(index.line_col(12.into()), LineCol { line: 1, col: 6.into() });
+    assert_eq!(
+        index.line_col(0.into()),
+        LineCol {
+            line: 0,
+            col: 0.into()
+        }
+    );
+    assert_eq!(
+        index.line_col(1.into()),
+        LineCol {
+            line: 0,
+            col: 1.into()
+        }
+    );
+    assert_eq!(
+        index.line_col(5.into()),
+        LineCol {
+            line: 0,
+            col: 5.into()
+        }
+    );
+    assert_eq!(
+        index.line_col(6.into()),
+        LineCol {
+            line: 1,
+            col: 0.into()
+        }
+    );
+    assert_eq!(
+        index.line_col(7.into()),
+        LineCol {
+            line: 1,
+            col: 1.into()
+        }
+    );
+    assert_eq!(
+        index.line_col(8.into()),
+        LineCol {
+            line: 1,
+            col: 2.into()
+        }
+    );
+    assert_eq!(
+        index.line_col(10.into()),
+        LineCol {
+            line: 1,
+            col: 4.into()
+        }
+    );
+    assert_eq!(
+        index.line_col(11.into()),
+        LineCol {
+            line: 1,
+            col: 5.into()
+        }
+    );
+    assert_eq!(
+        index.line_col(12.into()),
+        LineCol {
+            line: 1,
+            col: 6.into()
+        }
+    );
 
     let text = "\nhello\nworld";
     let index = LineIndex::new(text);
-    assert_eq!(index.line_col(0.into()), LineCol { line: 0, col: 0.into() });
-    assert_eq!(index.line_col(1.into()), LineCol { line: 1, col: 0.into() });
-    assert_eq!(index.line_col(2.into()), LineCol { line: 1, col: 1.into() });
-    assert_eq!(index.line_col(6.into()), LineCol { line: 1, col: 5.into() });
-    assert_eq!(index.line_col(7.into()), LineCol { line: 2, col: 0.into() });
+    assert_eq!(
+        index.line_col(0.into()),
+        LineCol {
+            line: 0,
+            col: 0.into()
+        }
+    );
+    assert_eq!(
+        index.line_col(1.into()),
+        LineCol {
+            line: 1,
+            col: 0.into()
+        }
+    );
+    assert_eq!(
+        index.line_col(2.into()),
+        LineCol {
+            line: 1,
+            col: 1.into()
+        }
+    );
+    assert_eq!(
+        index.line_col(6.into()),
+        LineCol {
+            line: 1,
+            col: 5.into()
+        }
+    );
+    assert_eq!(
+        index.line_col(7.into()),
+        LineCol {
+            line: 2,
+            col: 0.into()
+        }
+    );
 }