reading varargs

generics do not work yet:

===
fun <P> varargGeneric(a: Int, vararg b: P) = 1
===

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

@@ -1,17 +1,18 @@
 package org.jetbrains.jet.lang.resolve.java;
 
-import org.jetbrains.jet.rt.signature.JetSignatureExceptionsAdapter;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.jet.lang.descriptors.ClassDescriptor;
 import org.jetbrains.jet.lang.descriptors.annotations.AnnotationDescriptor;
-import org.jetbrains.jet.rt.signature.JetSignatureVisitor;
 import org.jetbrains.jet.lang.types.ErrorUtils;
 import org.jetbrains.jet.lang.types.JetStandardClasses;
 import org.jetbrains.jet.lang.types.JetStandardLibrary;
 import org.jetbrains.jet.lang.types.JetType;
 import org.jetbrains.jet.lang.types.JetTypeImpl;
 import org.jetbrains.jet.lang.types.TypeProjection;
+import org.jetbrains.jet.lang.types.TypeUtils;
 import org.jetbrains.jet.lang.types.Variance;
+import org.jetbrains.jet.rt.signature.JetSignatureExceptionsAdapter;
+import org.jetbrains.jet.rt.signature.JetSignatureVisitor;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -119,6 +120,17 @@ public abstract class JetTypeJetSignatureReader extends JetSignatureExceptionsAd
         };
     }
 
+    @Override
+    public JetSignatureVisitor visitArrayType(final boolean nullable) {
+        return new JetTypeJetSignatureReader(javaDescriptorResolver, jetStandardLibrary) {
+            @Override
+            protected void done(@NotNull JetType jetType) {
+                JetType arrayType = TypeUtils.makeNullableAsSpecified(jetStandardLibrary.getArrayType(jetType), nullable);
+                JetTypeJetSignatureReader.this.done(arrayType);
+            }
+        };
+    }
+
     @Override
     public void visitEnd() {
         JetType jetType = new JetTypeImpl(

compiler/testData/readClass/fun/FunVarargCharSequence.kt

@@ -0,0 +1,3 @@
+namespace test
+
+fun varargCharSequence(a: Int, vararg b: java.lang.CharSequence) = 1

compiler/testData/readClass/fun/FunVarargInt.kt

@@ -0,0 +1,3 @@
+namespace test
+
+fun varargInt(a: Int, vararg b: Int) = 1

compiler/tests/org/jetbrains/jet/ReadClassDataTest.java

@@ -256,11 +256,13 @@ public class ReadClassDataTest extends UsefulTestCase {
     }
     
     private void serialize(ValueParameterDescriptor valueParameter, StringBuilder sb) {
+        if (valueParameter.getVarargElementType() != null) {
+            sb.append("vararg ");
+        }
         sb.append(valueParameter.getName());
         sb.append(": ");
         if (valueParameter.getVarargElementType() != null) {
-            sb.append("vararg ");
+            serialize(valueParameter.getVarargElementType(), sb);
-            serialize(valueParameter.getVarargElementType());
         } else {
             serialize(valueParameter.getOutType(), sb);
         }