clean context to analyze next file

so REPL can be reused after error

this patch adds one more ugly hack to REPL

compiler/cli/src/org/jetbrains/jet/cli/jvm/repl/ReplInterpreter.java

@@ -190,6 +190,7 @@ public class ReplInterpreter {
         }
 
         injector.getTopDownAnalyzer().prepareForTheNextReplLine();
+        trace.clearDiagnostics();
 
         psiFile.getScript().putUserData(ScriptHeaderResolver.PRIORITY_KEY, lineNumber);
 

compiler/frontend/src/org/jetbrains/jet/lang/resolve/BindingTraceContext.java

@@ -59,6 +59,10 @@ public class BindingTraceContext implements BindingTrace {
         diagnostics.add(diagnostic);
     }
 
+    public void clearDiagnostics() {
+        diagnostics.clear();
+    }
+
     @Override
     public BindingContext getBindingContext() {
         return bindingContext;

compiler/tests/org/jetbrains/jet/repl/ReplInterpreterTest.java

@@ -134,8 +134,7 @@ public class ReplInterpreterTest {
 
     @Test
     public void analyzeErrors() {
-        // TODO
-        //testFile("analyzeErrors.repl");
+        testFile("analyzeErrors.repl");
     }
 
     @Test