Extract interface out of JavaValueParameter

compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/structure/JavaElementCollectionFromPsiArrayUtil.java

@@ -74,7 +74,7 @@ public class JavaElementCollectionFromPsiArrayUtil {
         if (parameters.length == 0) return Collections.emptyList();
         List<JavaValueParameter> result = new ArrayList<JavaValueParameter>(parameters.length);
         for (PsiParameter psiParameter : parameters) {
-            result.add(new JavaValueParameter(psiParameter));
+            result.add(new JavaValueParameterImpl(psiParameter));
         }
         return result;
     }

compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/structure/JavaValueParameter.java

@@ -19,46 +19,18 @@ package org.jetbrains.jet.lang.resolve.java.structure;
 import com.intellij.psi.PsiParameter;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
-import org.jetbrains.jet.lang.resolve.name.FqName;
 import org.jetbrains.jet.lang.resolve.name.Name;
 
-import java.util.Collection;
-
-public class JavaValueParameter extends JavaElementImpl implements JavaAnnotationOwner {
-    public JavaValueParameter(@NotNull PsiParameter psiParameter) {
-        super(psiParameter);
-    }
-
+public interface JavaValueParameter extends JavaAnnotationOwner {
     @NotNull
     @Override
-    public PsiParameter getPsi() {
-        return (PsiParameter) super.getPsi();
-    }
-
-    @NotNull
-    @Override
-    public Collection<JavaAnnotation> getAnnotations() {
-        return JavaElementUtil.getAnnotations(this);
-    }
+    PsiParameter getPsi();
 
     @Nullable
-    @Override
-    public JavaAnnotation findAnnotation(@NotNull FqName fqName) {
-        return JavaElementUtil.findAnnotation(this, fqName);
-    }
-
-    @Nullable
-    public Name getName() {
-        String name = getPsi().getName();
-        return name == null ? null : Name.identifier(name);
-    }
+    Name getName();
 
     @NotNull
-    public JavaType getType() {
-        return JavaTypeImpl.create(getPsi().getType());
-    }
+    JavaType getType();
 
-    public boolean isVararg() {
-        return getPsi().isVarArgs();
-    }
+    boolean isVararg();
 }

compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/structure/JavaValueParameterImpl.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright 2010-2013 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.jet.lang.resolve.java.structure;
+
+import com.intellij.psi.PsiParameter;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.jetbrains.jet.lang.resolve.name.FqName;
+import org.jetbrains.jet.lang.resolve.name.Name;
+
+import java.util.Collection;
+
+public class JavaValueParameterImpl extends JavaElementImpl implements JavaValueParameter {
+    public JavaValueParameterImpl(@NotNull PsiParameter psiParameter) {
+        super(psiParameter);
+    }
+
+    @NotNull
+    @Override
+    public PsiParameter getPsi() {
+        return (PsiParameter) super.getPsi();
+    }
+
+    @NotNull
+    @Override
+    public Collection<JavaAnnotation> getAnnotations() {
+        return JavaElementUtil.getAnnotations(this);
+    }
+
+    @Nullable
+    @Override
+    public JavaAnnotation findAnnotation(@NotNull FqName fqName) {
+        return JavaElementUtil.findAnnotation(this, fqName);
+    }
+
+    @Override
+    @Nullable
+    public Name getName() {
+        String name = getPsi().getName();
+        return name == null ? null : Name.identifier(name);
+    }
+
+    @Override
+    @NotNull
+    public JavaType getType() {
+        return JavaTypeImpl.create(getPsi().getType());
+    }
+
+    @Override
+    public boolean isVararg() {
+        return getPsi().isVarArgs();
+    }
+}