added 'getFiles' method to BodiesResolveContext interface

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

@@ -24,12 +24,14 @@ import org.jetbrains.jet.lang.psi.*;
 import org.jetbrains.jet.lang.resolve.scopes.JetScope;
 import org.jetbrains.jet.lang.resolve.scopes.WritableScope;
 
+import java.util.Collection;
 import java.util.Map;
 
 /**
 * @author Nikolay Krasko
 */
 public interface BodiesResolveContext {
+    Collection<JetFile> getFiles();
     Map<JetClass, MutableClassDescriptor> getClasses();
     Map<JetObjectDeclaration, MutableClassDescriptor> getObjects();
     Map<JetProperty, PropertyDescriptor> getProperties();

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

@@ -25,6 +25,7 @@ import org.jetbrains.jet.lang.psi.*;
 import org.jetbrains.jet.lang.resolve.scopes.JetScope;
 import org.jetbrains.jet.lang.resolve.scopes.WritableScope;
 
+import java.util.Collection;
 import java.util.Collections;
 import java.util.Map;
 
@@ -35,6 +36,7 @@ import java.util.Map;
 * @author Nikolay Krasko
 */
 public class CachedBodiesResolveContext implements BodiesResolveContext {
+    private final Collection<JetFile> files;
     private final Map<JetClass, MutableClassDescriptor> classes;
     private final Map<JetObjectDeclaration, MutableClassDescriptor> objects;
     private final Map<JetProperty, PropertyDescriptor> properties;
@@ -46,6 +48,7 @@ public class CachedBodiesResolveContext implements BodiesResolveContext {
     private @NotNull TopDownAnalysisParameters topDownAnalysisParameters;
 
     public CachedBodiesResolveContext(TopDownAnalysisContext context) {
+        files = Collections.unmodifiableCollection(context.getFiles());
         classes = Collections.unmodifiableMap(context.getClasses());
         objects = Collections.unmodifiableMap(context.getObjects());
         properties = Collections.unmodifiableMap(context.getProperties());
@@ -57,6 +60,11 @@ public class CachedBodiesResolveContext implements BodiesResolveContext {
         topDownAnalysisParameters = context.getTopDownAnalysisParameters();
     }
 
+    @Override
+    public Collection<JetFile> getFiles() {
+        return files;
+    }
+
     @Override
     public Map<JetClass, MutableClassDescriptor> getClasses() {
         return classes;

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

@@ -29,6 +29,7 @@ import org.jetbrains.jet.lang.resolve.scopes.WritableScope;
 
 import javax.inject.Inject;
 import java.io.PrintStream;
+import java.util.Collection;
 import java.util.Map;
 
 /**
@@ -118,6 +119,11 @@ public class TopDownAnalysisContext implements BodiesResolveContext {
         return namespaceDescriptors;
     }
 
+    @Override
+    public Collection<JetFile> getFiles() {
+        return namespaceDescriptors.keySet();
+    }
+
     @Override
     @NotNull
     public Map<JetScript, ScriptDescriptor> getScripts() {

compiler/frontend/src/org/jetbrains/jet/lang/resolve/lazy/ResolveSessionUtils.java

@@ -63,6 +63,11 @@ public class ResolveSessionUtils {
             this.declaringScopes = declaringScopes;
         }
 
+        @Override
+        public Collection<JetFile> getFiles() {
+            return Collections.emptySet();
+        }
+
         @Override
         public Map<JetClass, MutableClassDescriptor> getClasses() {
             return Collections.emptyMap();