JavaParser/com/github/javaparser/resolution/types/ResolvedTypeVariable.java

1	/*
2	* Copyright (C) 2007-2010 Júlio 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
22	package com.github.javaparser.resolution.types;
23
24	import com.github.javaparser.resolution.declarations.ResolvedTypeParameterDeclaration;
25
26	import java.util.List;
27	import java.util.Map;
28
29	/**
30	* From JLS 4.4: A type variable is introduced by the declaration of a type parameter of a generic class,
31	* interface, method, or constructor (§8.1.2, §9.1.2, §8.4.4, §8.8.4).
32	*
33	* @author Federico Tomassetti
34	*/
35	public class ResolvedTypeVariable implements ResolvedType {
36
37	private ResolvedTypeParameterDeclaration typeParameter;
38
39	public ResolvedTypeVariable(ResolvedTypeParameterDeclaration typeParameter) {
40	this.typeParameter = typeParameter;
41	}
42
43	@Override
44	public String toString() {
45	return "TypeVariable {" + typeParameter.toString() + "}";
46	}
47
48	public String qualifiedName() {
49	return this.typeParameter.getQualifiedName();
50	}
51
52	@Override
53	public boolean equals(Object o) {
54	if (this == o) return true;
55	if (o == null \|\| getClass() != o.getClass()) return false;
56
57	ResolvedTypeVariable that = (ResolvedTypeVariable) o;
58
59	if (!typeParameter.getName().equals(that.typeParameter.getName())) return false;
60	if (typeParameter.declaredOnType() != that.typeParameter.declaredOnType()) return false;
61	if (typeParameter.declaredOnMethod() != that.typeParameter.declaredOnMethod()) return false;
62
63	return true;
64	}
65
66	@Override
67	public int hashCode() {
68	return typeParameter.hashCode();
69	}
70
71	@Override
72	public boolean isArray() {
73	return false;
74	}
75
76	@Override
77	public boolean isPrimitive() {
78	return false;
79	}
80
81	@Override
82	public ResolvedType replaceTypeVariables(ResolvedTypeParameterDeclaration tpToBeReplaced, ResolvedType replaced, Map<ResolvedTypeParameterDeclaration, ResolvedType> inferredTypes) {
83	if(tpToBeReplaced.getName().equals(this.typeParameter.getName())){
84	inferredTypes.put(this.asTypeParameter(), replaced);
85	return replaced;
86	} else {
87	return this;
88	}
89	}
90
91	@Override
92	public boolean isReferenceType() {
93	return false;
94	}
95
96	@Override
97	public String describe() {
98	return typeParameter.getName();
99	}
100
101	@Override
102	public ResolvedTypeParameterDeclaration asTypeParameter() {
103	return typeParameter;
104	}
105
106	@Override
107	public ResolvedTypeVariable asTypeVariable() {
108	return this;
109	}
110
111	@Override
112	public boolean isTypeVariable() {
113	return true;
114	}
115
116	@Override
117	public boolean isAssignableBy(ResolvedType other) {
118	if (other.isTypeVariable()) {
119	return describe().equals(other.describe());
120	} else {
121	return true;
122	}
123	}
124
125	@Override
126	public boolean mention(List<ResolvedTypeParameterDeclaration> typeParameters) {
127	return typeParameters.contains(typeParameter);
128	}
129	}
130