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      1 /*
      2  * Copyright (C) 2007-2010 Jlio 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 /**
     29  * A node that can have type parameters.
     30  * <pre>
     31  *     class X {}        --> typeParameters == []
     32  *     class X&lt;> {}      --> does not occur.
     33  *     class X&lt;C,D> {}   --> typeParameters = [C,D]
     34  * </pre>
     35  */
     36 public interface NodeWithTypeParameters<N extends Node> {
     37     NodeList<TypeParameter> getTypeParameters();
     38 
     39     default TypeParameter getTypeParameter(int i) {
     40         return getTypeParameters().get(i);
     41     }
     42 
     43     @SuppressWarnings("unchecked")
     44     default N setTypeParameter(int i, TypeParameter typeParameter) {
     45         getTypeParameters().set(i, typeParameter);
     46         return (N) this;
     47     }
     48 
     49     @SuppressWarnings("unchecked")
     50     default N addTypeParameter(TypeParameter typeParameter) {
     51         getTypeParameters().add(typeParameter);
     52         return (N) this;
     53     }
     54 
     55     N setTypeParameters(NodeList<TypeParameter> typeParameters);
     56 
     57     default boolean isGeneric() {
     58         return getTypeParameters().size() > 0;
     59     }
     60 }
     61