Home | History | Annotate | Download | only in expr 
      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.nodeTypes.NodeWithType;
     25 import com.github.javaparser.ast.observer.ObservableProperty;
     26 import com.github.javaparser.ast.type.ClassOrInterfaceType;
     27 import com.github.javaparser.ast.type.Type;
     28 import com.github.javaparser.ast.visitor.GenericVisitor;
     29 import com.github.javaparser.ast.visitor.VoidVisitor;
     30 import static com.github.javaparser.utils.Utils.assertNotNull;
     31 import com.github.javaparser.ast.Node;
     32 import com.github.javaparser.ast.visitor.CloneVisitor;
     33 import com.github.javaparser.metamodel.TypeExprMetaModel;
     34 import com.github.javaparser.metamodel.JavaParserMetaModel;
     35 import javax.annotation.Generated;
     36 import com.github.javaparser.TokenRange;
     37 import java.util.function.Consumer;
     38 import java.util.Optional;
     39 
     40 /**
     41  * This class is just instantiated as scopes for MethodReferenceExpr nodes to encapsulate Types.
     42  * <br/>In <code>World::greet</code> the ClassOrInterfaceType "World" is wrapped in a TypeExpr
     43  * before it is set as the scope of the MethodReferenceExpr.
     44  *
     45  * @author Raquel Pau
     46  */
     47 public final class TypeExpr extends Expression implements NodeWithType<TypeExpr, Type> {
     48 
     49     private Type type;
     50 
     51     public TypeExpr() {
     52         this(null, new ClassOrInterfaceType());
     53     }
     54 
     55     @AllFieldsConstructor
     56     public TypeExpr(Type type) {
     57         this(null, type);
     58     }
     59 
     60     /**
     61      * This constructor is used by the parser and is considered private.
     62      */
     63     @Generated("com.github.javaparser.generator.core.node.MainConstructorGenerator")
     64     public TypeExpr(TokenRange tokenRange, Type type) {
     65         super(tokenRange);
     66         setType(type);
     67         customInitialization();
     68     }
     69 
     70     @Override
     71     @Generated("com.github.javaparser.generator.core.node.AcceptGenerator")
     72     public <R, A> R accept(final GenericVisitor<R, A> v, final A arg) {
     73         return v.visit(this, arg);
     74     }
     75 
     76     @Override
     77     @Generated("com.github.javaparser.generator.core.node.AcceptGenerator")
     78     public <A> void accept(final VoidVisitor<A> v, final A arg) {
     79         v.visit(this, arg);
     80     }
     81 
     82     @Generated("com.github.javaparser.generator.core.node.PropertyGenerator")
     83     public Type getType() {
     84         return type;
     85     }
     86 
     87     @Generated("com.github.javaparser.generator.core.node.PropertyGenerator")
     88     public TypeExpr setType(final Type type) {
     89         assertNotNull(type);
     90         if (type == this.type) {
     91             return (TypeExpr) this;
     92         }
     93         notifyPropertyChange(ObservableProperty.TYPE, this.type, type);
     94         if (this.type != null)
     95             this.type.setParentNode(null);
     96         this.type = type;
     97         setAsParentNodeOf(type);
     98         return this;
     99     }
    100 
    101     @Override
    102     @Generated("com.github.javaparser.generator.core.node.RemoveMethodGenerator")
    103     public boolean remove(Node node) {
    104         if (node == null)
    105             return false;
    106         return super.remove(node);
    107     }
    108 
    109     @Override
    110     @Generated("com.github.javaparser.generator.core.node.CloneGenerator")
    111     public TypeExpr clone() {
    112         return (TypeExpr) accept(new CloneVisitor(), null);
    113     }
    114 
    115     @Override
    116     @Generated("com.github.javaparser.generator.core.node.GetMetaModelGenerator")
    117     public TypeExprMetaModel getMetaModel() {
    118         return JavaParserMetaModel.typeExprMetaModel;
    119     }
    120 
    121     @Override
    122     @Generated("com.github.javaparser.generator.core.node.ReplaceMethodGenerator")
    123     public boolean replace(Node node, Node replacementNode) {
    124         if (node == null)
    125             return false;
    126         if (node == type) {
    127             setType((Type) replacementNode);
    128             return true;
    129         }
    130         return super.replace(node, replacementNode);
    131     }
    132 
    133     @Override
    134     @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator")
    135     public boolean isTypeExpr() {
    136         return true;
    137     }
    138 
    139     @Override
    140     @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator")
    141     public TypeExpr asTypeExpr() {
    142         return this;
    143     }
    144 
    145     @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator")
    146     public void ifTypeExpr(Consumer<TypeExpr> action) {
    147         action.accept(this);
    148     }
    149 
    150     @Override
    151     @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator")
    152     public Optional<TypeExpr> toTypeExpr() {
    153         return Optional.of(this);
    154     }
    155 }
    156