| 1 | /* |
|---|---|
| 2 | * Copyright (C) 2007-2010 JĂșlio Vilmar Gesser. |
| 3 | * Copyright (C) 2011, 2013-2020 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.type; |
| 22 | |
| 23 | import com.github.javaparser.Range; |
| 24 | import com.github.javaparser.ast.AllFieldsConstructor; |
| 25 | import com.github.javaparser.ast.NodeList; |
| 26 | import com.github.javaparser.ast.expr.AnnotationExpr; |
| 27 | import com.github.javaparser.ast.expr.SimpleName; |
| 28 | import com.github.javaparser.ast.nodeTypes.NodeWithAnnotations; |
| 29 | import com.github.javaparser.ast.nodeTypes.NodeWithSimpleName; |
| 30 | import com.github.javaparser.ast.observer.ObservableProperty; |
| 31 | import com.github.javaparser.ast.visitor.GenericVisitor; |
| 32 | import com.github.javaparser.ast.visitor.VoidVisitor; |
| 33 | import static com.github.javaparser.utils.Utils.assertNotNull; |
| 34 | import static java.util.stream.Collectors.joining; |
| 35 | import com.github.javaparser.ast.Node; |
| 36 | import com.github.javaparser.ast.visitor.CloneVisitor; |
| 37 | import com.github.javaparser.metamodel.TypeParameterMetaModel; |
| 38 | import com.github.javaparser.metamodel.JavaParserMetaModel; |
| 39 | import com.github.javaparser.TokenRange; |
| 40 | import com.github.javaparser.resolution.types.ResolvedTypeVariable; |
| 41 | import java.util.function.Consumer; |
| 42 | import java.util.Optional; |
| 43 | import com.github.javaparser.ast.Generated; |
| 44 | |
| 45 | /** |
| 46 | * A type parameter. Examples: |
| 47 | * <br>{@code <}<b>{@code U}</b>{@code > U getU() { ... }} |
| 48 | * <br>{@code class D <}<b>{@code @Brain T extends B & A & @Tripe C}</b>{@code > { ... }} |
| 49 | * <p>U and T are type parameter names. |
| 50 | * <br>B, A, and C are type parameter bounds. |
| 51 | * <br>Tripe is an annotation on type parameter bound C. |
| 52 | * <br>Brain is an annotation on type parameter T. |
| 53 | * |
| 54 | * @author Julio Vilmar Gesser |
| 55 | * @see com.github.javaparser.ast.nodeTypes.NodeWithTypeParameters |
| 56 | */ |
| 57 | public class TypeParameter extends ReferenceType implements NodeWithSimpleName<TypeParameter>, NodeWithAnnotations<TypeParameter> { |
| 58 | |
| 59 | private SimpleName name; |
| 60 | |
| 61 | private NodeList<ClassOrInterfaceType> typeBound; |
| 62 | |
| 63 | public TypeParameter() { |
| 64 | this(null, new SimpleName(), new NodeList<>(), new NodeList<>()); |
| 65 | } |
| 66 | |
| 67 | public TypeParameter(final String name) { |
| 68 | this(null, new SimpleName(name), new NodeList<>(), new NodeList<>()); |
| 69 | } |
| 70 | |
| 71 | public TypeParameter(final String name, final NodeList<ClassOrInterfaceType> typeBound) { |
| 72 | this(null, new SimpleName(name), typeBound, new NodeList<>()); |
| 73 | } |
| 74 | |
| 75 | @AllFieldsConstructor |
| 76 | public TypeParameter(SimpleName name, NodeList<ClassOrInterfaceType> typeBound, NodeList<AnnotationExpr> annotations) { |
| 77 | this(null, name, typeBound, annotations); |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * This constructor is used by the parser and is considered private. |
| 82 | */ |
| 83 | @Generated("com.github.javaparser.generator.core.node.MainConstructorGenerator") |
| 84 | public TypeParameter(TokenRange tokenRange, SimpleName name, NodeList<ClassOrInterfaceType> typeBound, NodeList<AnnotationExpr> annotations) { |
| 85 | super(tokenRange, annotations); |
| 86 | setName(name); |
| 87 | setTypeBound(typeBound); |
| 88 | customInitialization(); |
| 89 | } |
| 90 | |
| 91 | @Override |
| 92 | @Generated("com.github.javaparser.generator.core.node.AcceptGenerator") |
| 93 | public <R, A> R accept(final GenericVisitor<R, A> v, final A arg) { |
| 94 | return v.visit(this, arg); |
| 95 | } |
| 96 | |
| 97 | @Override |
| 98 | @Generated("com.github.javaparser.generator.core.node.AcceptGenerator") |
| 99 | public <A> void accept(final VoidVisitor<A> v, final A arg) { |
| 100 | v.visit(this, arg); |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * Return the name of the paramenter. |
| 105 | * |
| 106 | * @return the name of the paramenter |
| 107 | */ |
| 108 | @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") |
| 109 | public SimpleName getName() { |
| 110 | return name; |
| 111 | } |
| 112 | |
| 113 | /** |
| 114 | * Return the list of {@link ClassOrInterfaceType} that this parameter |
| 115 | * extends. Return {@code null} null if there are no type. |
| 116 | * |
| 117 | * @return list of types that this paramente extends or {@code null} |
| 118 | */ |
| 119 | @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") |
| 120 | public NodeList<ClassOrInterfaceType> getTypeBound() { |
| 121 | return typeBound; |
| 122 | } |
| 123 | |
| 124 | @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") |
| 125 | public TypeParameter setName(final SimpleName name) { |
| 126 | assertNotNull(name); |
| 127 | if (name == this.name) { |
| 128 | return (TypeParameter) this; |
| 129 | } |
| 130 | notifyPropertyChange(ObservableProperty.NAME, this.name, name); |
| 131 | if (this.name != null) |
| 132 | this.name.setParentNode(null); |
| 133 | this.name = name; |
| 134 | setAsParentNodeOf(name); |
| 135 | return this; |
| 136 | } |
| 137 | |
| 138 | @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") |
| 139 | public TypeParameter setTypeBound(final NodeList<ClassOrInterfaceType> typeBound) { |
| 140 | assertNotNull(typeBound); |
| 141 | if (typeBound == this.typeBound) { |
| 142 | return (TypeParameter) this; |
| 143 | } |
| 144 | notifyPropertyChange(ObservableProperty.TYPE_BOUND, this.typeBound, typeBound); |
| 145 | if (this.typeBound != null) |
| 146 | this.typeBound.setParentNode(null); |
| 147 | this.typeBound = typeBound; |
| 148 | setAsParentNodeOf(typeBound); |
| 149 | return this; |
| 150 | } |
| 151 | |
| 152 | @Override |
| 153 | public TypeParameter setAnnotations(NodeList<AnnotationExpr> annotations) { |
| 154 | super.setAnnotations(annotations); |
| 155 | return this; |
| 156 | } |
| 157 | |
| 158 | @Override |
| 159 | @Generated("com.github.javaparser.generator.core.node.RemoveMethodGenerator") |
| 160 | public boolean remove(Node node) { |
| 161 | if (node == null) |
| 162 | return false; |
| 163 | for (int i = 0; i < typeBound.size(); i++) { |
| 164 | if (typeBound.get(i) == node) { |
| 165 | typeBound.remove(i); |
| 166 | return true; |
| 167 | } |
| 168 | } |
| 169 | return super.remove(node); |
| 170 | } |
| 171 | |
| 172 | @Override |
| 173 | public String asString() { |
| 174 | StringBuilder str = new StringBuilder(getNameAsString()); |
| 175 | getTypeBound().ifNonEmpty(l -> str.append(l.stream().map(ClassOrInterfaceType::asString).collect(joining("&", " extends ", "")))); |
| 176 | return str.toString(); |
| 177 | } |
| 178 | |
| 179 | @Override |
| 180 | @Generated("com.github.javaparser.generator.core.node.CloneGenerator") |
| 181 | public TypeParameter clone() { |
| 182 | return (TypeParameter) accept(new CloneVisitor(), null); |
| 183 | } |
| 184 | |
| 185 | @Override |
| 186 | @Generated("com.github.javaparser.generator.core.node.GetMetaModelGenerator") |
| 187 | public TypeParameterMetaModel getMetaModel() { |
| 188 | return JavaParserMetaModel.typeParameterMetaModel; |
| 189 | } |
| 190 | |
| 191 | @Override |
| 192 | @Generated("com.github.javaparser.generator.core.node.ReplaceMethodGenerator") |
| 193 | public boolean replace(Node node, Node replacementNode) { |
| 194 | if (node == null) |
| 195 | return false; |
| 196 | if (node == name) { |
| 197 | setName((SimpleName) replacementNode); |
| 198 | return true; |
| 199 | } |
| 200 | for (int i = 0; i < typeBound.size(); i++) { |
| 201 | if (typeBound.get(i) == node) { |
| 202 | typeBound.set(i, (ClassOrInterfaceType) replacementNode); |
| 203 | return true; |
| 204 | } |
| 205 | } |
| 206 | return super.replace(node, replacementNode); |
| 207 | } |
| 208 | |
| 209 | @Override |
| 210 | @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator") |
| 211 | public boolean isTypeParameter() { |
| 212 | return true; |
| 213 | } |
| 214 | |
| 215 | @Override |
| 216 | @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator") |
| 217 | public TypeParameter asTypeParameter() { |
| 218 | return this; |
| 219 | } |
| 220 | |
| 221 | @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator") |
| 222 | public void ifTypeParameter(Consumer<TypeParameter> action) { |
| 223 | action.accept(this); |
| 224 | } |
| 225 | |
| 226 | @Override |
| 227 | public ResolvedTypeVariable resolve() { |
| 228 | return getSymbolResolver().toResolvedType(this, ResolvedTypeVariable.class); |
| 229 | } |
| 230 | |
| 231 | @Override |
| 232 | @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator") |
| 233 | public Optional<TypeParameter> toTypeParameter() { |
| 234 | return Optional.of(this); |
| 235 | } |
| 236 | } |
| 237 |
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