1 /* 2 * Copyright (C) 2007-2010 Júlio Vilmar Gesser. 3 * Copyright (C) 2011, 2013-2016 The JavaParser Team. 4 * 5 * This file is part of JavaParser. 6 * 7 * JavaParser can be used either under the terms of 8 * a) the GNU Lesser General Public License as published by 9 * the Free Software Foundation, either version 3 of the License, or 10 * (at your option) any later version. 11 * b) the terms of the Apache License 12 * 13 * You should have received a copy of both licenses in LICENCE.LGPL and 14 * LICENCE.APACHE. Please refer to those files for details. 15 * 16 * JavaParser is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 * GNU Lesser General Public License for more details. 20 */ 21 22 package com.github.javaparser.ast.nodeTypes; 23 24 import com.github.javaparser.ast.Node; 25 import com.github.javaparser.ast.NodeList; 26 import com.github.javaparser.ast.type.TypeParameter; 27 28 import static com.github.javaparser.StaticJavaParser.parseTypeParameter; 29 30 /** 31 * A node that can have type parameters. 32 * <pre> 33 * class X {} --> typeParameters == [] 34 * class X<> {} --> does not occur. 35 * class X<C,D> {} --> typeParameters = [C,D] 36 * </pre> 37 */ 38 public interface NodeWithTypeParameters<N extends Node> { getTypeParameters()39 NodeList<TypeParameter> getTypeParameters(); 40 getTypeParameter(int i)41 default TypeParameter getTypeParameter(int i) { 42 return getTypeParameters().get(i); 43 } 44 45 @SuppressWarnings("unchecked") setTypeParameter(int i, TypeParameter typeParameter)46 default N setTypeParameter(int i, TypeParameter typeParameter) { 47 getTypeParameters().set(i, typeParameter); 48 return (N) this; 49 } 50 51 @SuppressWarnings("unchecked") addTypeParameter(TypeParameter typeParameter)52 default N addTypeParameter(TypeParameter typeParameter) { 53 getTypeParameters().add(typeParameter); 54 return (N) this; 55 } 56 57 /** 58 * Adds a type parameter like "X extends Serializable" 59 */ addTypeParameter(String typeParameter)60 default N addTypeParameter(String typeParameter) { 61 return addTypeParameter(parseTypeParameter(typeParameter)); 62 } 63 setTypeParameters(NodeList<TypeParameter> typeParameters)64 N setTypeParameters(NodeList<TypeParameter> typeParameters); 65 isGeneric()66 default boolean isGeneric() { 67 return getTypeParameters().size() > 0; 68 } 69 } 70