Fix bug with debug specifications

schala-lang/language/src/schala.rs

@@ -238,22 +238,23 @@ impl ProgrammingLanguageInterface for Schala {
       let stage_names = stage_names();
       let cur_stage_name = stage_names[n];
       let ask = token.debug_requests.iter().find(|ask| ask.is_for_stage(cur_stage_name));
-      let mut debug_artifact = ask.and_then(|ask| match ask {
+
-        DebugAsk::ByStage { token, .. } => token.as_ref(),
+      let parsing = match ask {
-        _ => None
+        Some(DebugAsk::ByStage { token, .. }) if cur_stage_name == "parsing" => Some(
-      }).map(|token| {
+          token.as_ref().map(|token| match &token[..] {
-        let parsing = if cur_stage_name != "parsing" {
-          None
-        } else {
-          Some(match &token[..] {
             "compact" => ParsingDebugType::CompactAST,
             "expanded" => ParsingDebugType::ExpandedAST,
             "trace" => ParsingDebugType::Trace,
             _ => ParsingDebugType::CompactAST,
-          })
+          }).unwrap_or(ParsingDebugType::CompactAST)
-        };
+        ),
-        PassDebugArtifact { parsing, ..Default::default() }
+        _ => None,
+      };
+
+      let mut debug_artifact = ask.map(|_| PassDebugArtifact {
+        parsing, ..Default::default()
       });
+
       let output = func(input, token.schala, debug_artifact.as_mut());
 
       token.stage_durations.push((cur_stage_name.to_string(), token.sw.elapsed()));