| /* |
| * Copyright 2000-2009 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 com.intellij.psi; |
| |
| import com.intellij.util.ArrayFactory; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * Represents the type parameter of a generic class, interface, method or constructor. |
| * |
| * @author dsl |
| */ |
| public interface PsiTypeParameter extends PsiClass, PsiAnnotationOwner { |
| /** |
| * The empty array of PSI type parameters which can be reused to avoid unnecessary allocations. |
| */ |
| PsiTypeParameter[] EMPTY_ARRAY = new PsiTypeParameter[0]; |
| |
| ArrayFactory<PsiTypeParameter> ARRAY_FACTORY = new ArrayFactory<PsiTypeParameter>() { |
| @NotNull |
| @Override |
| public PsiTypeParameter[] create(final int count) { |
| return count == 0 ? EMPTY_ARRAY : new PsiTypeParameter[count]; |
| } |
| }; |
| |
| /** |
| * Returns the extends list of the type parameter. |
| * |
| * @return the extends list. For this particular kind of classes it never returns null. |
| */ |
| @Override |
| @NotNull |
| PsiReferenceList getExtendsList(); |
| |
| /** |
| * Returns the element which is parameterized by the type parameter. |
| * |
| * @return the type parameter owner instance. |
| */ |
| @Nullable |
| PsiTypeParameterListOwner getOwner(); |
| |
| /** |
| * Returns the position of this type parameter in the type parameter list of the owner element. |
| * |
| * @return the type parameter position. |
| */ |
| int getIndex(); |
| } |