blob: e308feace127727c57c7a5b6f71a4afc200ea957 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
/*
* Copyright (C) 2007-2010 Júlio Vilmar Gesser.
* Copyright (C) 2011, 2013-2016 The JavaParser Team.
*
* This file is part of JavaParser.
*
* JavaParser can be used either under the terms of
* a) the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* b) the terms of the Apache License
*
* You should have received a copy of both licenses in LICENCE.LGPL and
* LICENCE.APACHE. Please refer to those files for details.
*
* JavaParser is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*/
package com.github.javaparser.resolution.types;
import com.github.javaparser.resolution.declarations.ResolvedTypeParameterDeclaration;
import java.util.*;
import java.util.stream.Collectors;
/**
* An intersection type is defined in java as list of types separates by ampersands.
*
* @author Federico Tomassetti
*/
public class ResolvedIntersectionType implements ResolvedType {
private List<ResolvedType> elements;
public ResolvedIntersectionType(Collection<ResolvedType> elements) {
if (elements.size() < 2) {
throw new IllegalArgumentException("An intersection type should have at least two elements. This has " + elements.size());
}
this.elements = new LinkedList<>(elements);
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
ResolvedIntersectionType that = (ResolvedIntersectionType) o;
return new HashSet<>(elements).equals(new HashSet<>(that.elements));
}
@Override
public int hashCode() {
return new HashSet<>(elements).hashCode();
}
@Override
public String describe() {
return String.join(" & ", elements.stream().map(ResolvedType::describe).collect(Collectors.toList()));
}
@Override
public boolean isAssignableBy(ResolvedType other) {
return elements.stream().allMatch(e -> e.isAssignableBy(other));
}
@Override
public ResolvedType replaceTypeVariables(ResolvedTypeParameterDeclaration tp, ResolvedType replaced, Map<ResolvedTypeParameterDeclaration, ResolvedType> inferredTypes) {
List<ResolvedType> elementsReplaced = elements.stream()
.map(e -> e.replaceTypeVariables(tp, replaced, inferredTypes))
.collect(Collectors.toList());
if (elementsReplaced.equals(elements)) {
return this;
} else {
return new ResolvedIntersectionType(elementsReplaced);
}
}
}
|
