Issue 3155. Better error report for directives in sourced unit

compiler/java/com/google/dart/compiler/DartCompiler.java

Index: compiler/java/com/google/dart/compiler/DartCompiler.java
diff --git a/compiler/java/com/google/dart/compiler/DartCompiler.java b/compiler/java/com/google/dart/compiler/DartCompiler.java
index ccf3f48a986a66720c1c515b1236b5a9cf6a668f..796d5f1c28d2fc183f788c2f3f6d301ee9b2252a 100644
--- a/compiler/java/com/google/dart/compiler/DartCompiler.java
+++ b/compiler/java/com/google/dart/compiler/DartCompiler.java
@@ -34,6 +34,7 @@ import com.google.dart.compiler.resolver.CoreTypeProvider;
 import com.google.dart.compiler.resolver.CoreTypeProviderImplementation;
 import com.google.dart.compiler.resolver.Element;
 import com.google.dart.compiler.resolver.ElementKind;
+import com.google.dart.compiler.resolver.Elements;
 import com.google.dart.compiler.resolver.LibraryElement;
 import com.google.dart.compiler.resolver.MemberBuilder;
 import com.google.dart.compiler.resolver.MethodElement;
@@ -676,7 +677,7 @@ public class DartCompiler {
               if (dartSource.getRelativePath().equals(sourceNode.getText())) {
                 context.onError(new DartCompilationError(unit.getDirectives().get(0),
                     DartCompilerErrorCode.ILLEGAL_DIRECTIVES_IN_SOURCED_UNIT,
-                    dartSource.getRelativePath()));
+                    Elements.getRelativeSourcePath(dartSource, lib.getSource())));
               }
             }
           }
@@ -1226,6 +1227,8 @@ public class DartCompiler {
             // Ignore errors. Resolver and TypeAnalyzer should be able to cope with
             // resolution errors.
           }
+          // To help support the IDE, notify the listener that this unit is compiled.
+          context.unitCompiled(unit);
         }
       }
     }