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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 package com.github.javaparser.ast.expr;
     22 
     23 import com.github.javaparser.ast.AllFieldsConstructor;
     24 import com.github.javaparser.ast.Node;
     25 import com.github.javaparser.ast.nodeTypes.NodeWithSimpleName;
     26 import com.github.javaparser.ast.observer.ObservableProperty;
     27 import com.github.javaparser.ast.visitor.GenericVisitor;
     28 import com.github.javaparser.ast.visitor.VoidVisitor;
     29 import static com.github.javaparser.utils.Utils.assertNotNull;
     30 import com.github.javaparser.ast.visitor.CloneVisitor;
     31 import com.github.javaparser.metamodel.MemberValuePairMetaModel;
     32 import com.github.javaparser.metamodel.JavaParserMetaModel;
     33 import javax.annotation.Generated;
     34 import com.github.javaparser.TokenRange;
     35 
     36 /**
     37  * A value for a member of an annotation.
     38  * In <code>@Counters(a=15)</code> a=15 is a MemberValuePair. Its name is a, and its value is 15.
     39  *
     40  * @author Julio Vilmar Gesser
     41  */
     42 public final class MemberValuePair extends Node implements NodeWithSimpleName<MemberValuePair> {
     43 
     44     private SimpleName name;
     45 
     46     private Expression value;
     47 
     48     public MemberValuePair() {
     49         this(null, new SimpleName(), new StringLiteralExpr());
     50     }
     51 
     52     public MemberValuePair(final String name, final Expression value) {
     53         this(null, new SimpleName(name), value);
     54     }
     55 
     56     @AllFieldsConstructor
     57     public MemberValuePair(final SimpleName name, final Expression value) {
     58         this(null, name, value);
     59     }
     60 
     61     /**
     62      * This constructor is used by the parser and is considered private.
     63      */
     64     @Generated("com.github.javaparser.generator.core.node.MainConstructorGenerator")
     65     public MemberValuePair(TokenRange tokenRange, SimpleName name, Expression value) {
     66         super(tokenRange);
     67         setName(name);
     68         setValue(value);
     69         customInitialization();
     70     }
     71 
     72     @Override
     73     @Generated("com.github.javaparser.generator.core.node.AcceptGenerator")
     74     public <R, A> R accept(final GenericVisitor<R, A> v, final A arg) {
     75         return v.visit(this, arg);
     76     }
     77 
     78     @Override
     79     @Generated("com.github.javaparser.generator.core.node.AcceptGenerator")
     80     public <A> void accept(final VoidVisitor<A> v, final A arg) {
     81         v.visit(this, arg);
     82     }
     83 
     84     @Generated("com.github.javaparser.generator.core.node.PropertyGenerator")
     85     public SimpleName getName() {
     86         return name;
     87     }
     88 
     89     @Generated("com.github.javaparser.generator.core.node.PropertyGenerator")
     90     public Expression getValue() {
     91         return value;
     92     }
     93 
     94     @Generated("com.github.javaparser.generator.core.node.PropertyGenerator")
     95     public MemberValuePair setName(final SimpleName name) {
     96         assertNotNull(name);
     97         if (name == this.name) {
     98             return (MemberValuePair) this;
     99         }
    100         notifyPropertyChange(ObservableProperty.NAME, this.name, name);
    101         if (this.name != null)
    102             this.name.setParentNode(null);
    103         this.name = name;
    104         setAsParentNodeOf(name);
    105         return this;
    106     }
    107 
    108     @Generated("com.github.javaparser.generator.core.node.PropertyGenerator")
    109     public MemberValuePair setValue(final Expression value) {
    110         assertNotNull(value);
    111         if (value == this.value) {
    112             return (MemberValuePair) this;
    113         }
    114         notifyPropertyChange(ObservableProperty.VALUE, this.value, value);
    115         if (this.value != null)
    116             this.value.setParentNode(null);
    117         this.value = value;
    118         setAsParentNodeOf(value);
    119         return this;
    120     }
    121 
    122     @Override
    123     @Generated("com.github.javaparser.generator.core.node.RemoveMethodGenerator")
    124     public boolean remove(Node node) {
    125         if (node == null)
    126             return false;
    127         return super.remove(node);
    128     }
    129 
    130     @Override
    131     @Generated("com.github.javaparser.generator.core.node.CloneGenerator")
    132     public MemberValuePair clone() {
    133         return (MemberValuePair) accept(new CloneVisitor(), null);
    134     }
    135 
    136     @Override
    137     @Generated("com.github.javaparser.generator.core.node.GetMetaModelGenerator")
    138     public MemberValuePairMetaModel getMetaModel() {
    139         return JavaParserMetaModel.memberValuePairMetaModel;
    140     }
    141 
    142     @Override
    143     @Generated("com.github.javaparser.generator.core.node.ReplaceMethodGenerator")
    144     public boolean replace(Node node, Node replacementNode) {
    145         if (node == null)
    146             return false;
    147         if (node == name) {
    148             setName((SimpleName) replacementNode);
    149             return true;
    150         }
    151         if (node == value) {
    152             setValue((Expression) replacementNode);
    153             return true;
    154         }
    155         return super.replace(node, replacementNode);
    156     }
    157 }
    158