show error offsets in tests

2 files changed, 11 insertions, 2 deletions

diff --git a/crates/ra_syntax/src/lib.rs b/crates/ra_syntax/src/lib.rs
index 930a643b7..8c0ba6f2d 100644
--- a/crates/ra_syntax/src/lib.rs
+++ b/crates/ra_syntax/src/lib.rs
@@ -76,7 +76,7 @@ impl Parse {
     pub fn debug_dump(&self) -> String {
         let mut buf = self.tree.syntax().debug_dump();
         for err in self.errors.iter() {
-            writeln!(buf, "err: `{}`", err).unwrap();
+            writeln!(buf, "error {:?}: {}", err.location(), err.kind()).unwrap();
         }
         buf
     }
diff --git a/crates/ra_syntax/src/syntax_error.rs b/crates/ra_syntax/src/syntax_error.rs
index 27e12293b..67deee1be 100644
--- a/crates/ra_syntax/src/syntax_error.rs
+++ b/crates/ra_syntax/src/syntax_error.rs
@@ -13,7 +13,7 @@ pub struct SyntaxError {
     location: Location,
 }
 
-#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+#[derive(Clone, PartialEq, Eq, Hash)]
 pub enum Location {
     Offset(TextUnit),
     Range(TextRange),
@@ -31,6 +31,15 @@ impl Into<Location> for TextRange {
     }
 }
 
+impl fmt::Debug for Location {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match self {
+            Location::Offset(it) => fmt::Debug::fmt(it, f),
+            Location::Range(it) => fmt::Debug::fmt(it, f),
+        }
+    }
+}
+
 impl SyntaxError {
     pub fn new<L: Into<Location>>(kind: SyntaxErrorKind, loc: L) -> SyntaxError {
         SyntaxError { kind, location: loc.into() }