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
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
/*******************************************************************************
* Copyright (c) 2013, 2019 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.core.dom;
import java.util.ArrayList;
import java.util.List;
/**
* Type node for an intersection type in a cast expression (added in JLS8 API).
* <pre>
* IntersectionType:
* Type <b>&</b> Type { <b>&</b> Type }
* </pre>
* <p>
* This kind of node is used only inside a cast expression.
* </p>
*
* @since 3.10
* @noinstantiate This class is not intended to be instantiated by clients.
*/
public class IntersectionType extends Type {
/**
* The "types" structural property of this node type (element type: {@link Type}).
*/
public static final ChildListPropertyDescriptor TYPES_PROPERTY =
new ChildListPropertyDescriptor(IntersectionType.class, "types", Type.class, CYCLE_RISK); //$NON-NLS-1$
/**
* A list of property descriptors (element type:
* {@link StructuralPropertyDescriptor}),
* or null if uninitialized.
*/
private static final List PROPERTY_DESCRIPTORS_8_0;
static {
List propertyList = new ArrayList(2);
createPropertyList(IntersectionType.class, propertyList);
addProperty(TYPES_PROPERTY, propertyList);
PROPERTY_DESCRIPTORS_8_0 = reapPropertyList(propertyList);
}
/**
* Returns a list of structural property descriptors for this node type.
* Clients must not modify the result.
*
* @param apiLevel the API level; one of the
* <code>AST.JLS*</code> constants
* @return a list of property descriptors (element type:
* {@link StructuralPropertyDescriptor})
*/
public static List propertyDescriptors(int apiLevel) {
return PROPERTY_DESCRIPTORS_8_0;
}
/**
* The list of types (element type: {@link Type}). Defaults to an empty list.
*/
private ASTNode.NodeList types = new ASTNode.NodeList(TYPES_PROPERTY);
/**
* Creates a new unparented node for an intersection type owned by the given AST.
* By default, it has no types.<p>
*
* N.B. This constructor is package-private.
* </p>
*
* @param ast the AST that is to own this node
*/
IntersectionType(AST ast) {
super(ast);
unsupportedIn2_3_4();
}
@Override
final List internalStructuralPropertiesForType(int apiLevel) {
return propertyDescriptors(apiLevel);
}
@Override
final List internalGetChildListProperty(ChildListPropertyDescriptor property) {
if (property == TYPES_PROPERTY) {
return types();
}
// allow default implementation to flag the error
return super.internalGetChildListProperty(property);
}
@Override
final int getNodeType0() {
return INTERSECTION_TYPE;
}
@Override
ASTNode clone0(AST target) {
IntersectionType result = new IntersectionType(target);
result.setSourceRange(getStartPosition(), getLength());
result.types().addAll(
ASTNode.copySubtrees(target, types()));
return result;
}
@Override
final boolean subtreeMatch0(ASTMatcher matcher, Object other) {
// dispatch to correct overloaded match method
return matcher.match(this, other);
}
@Override
void accept0(ASTVisitor visitor) {
boolean visitChildren = visitor.visit(this);
if (visitChildren) {
// visit children in normal left to right reading order
acceptChildren(visitor, this.types);
}
visitor.endVisit(this);
}
/**
* Returns the live ordered list of types in this intersection type.
* Adding and removing nodes from this list affects this node
* dynamically. All nodes in this list must be
* <code>Type</code>s; attempts to add any other
* type of node will trigger an exception.
*
* @return the live list of types in this intersection type (element type: {@link Type})
*/
public List types() {
return this.types;
}
@Override
int memSize() {
return BASE_NODE_SIZE + 1 * 4;
}
@Override
int treeSize() {
return
memSize()
+ this.types.listSize();
}
}
|
