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
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
/*
* Copyright (C) 2012-2014 The Project Lombok Authors.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package lombok.eclipse.handlers;
import static lombok.core.handlers.HandlerUtil.*;
import static lombok.eclipse.handlers.EclipseHandlerUtil.*;
import java.util.Arrays;
import lombok.AccessLevel;
import lombok.ConfigurationKeys;
import lombok.core.AST.Kind;
import lombok.core.AnnotationValues;
import lombok.core.HandlerPriority;
import lombok.eclipse.Eclipse;
import lombok.eclipse.EclipseASTAdapter;
import lombok.eclipse.EclipseASTVisitor;
import lombok.eclipse.EclipseNode;
import lombok.experimental.FieldDefaults;
import lombok.experimental.NonFinal;
import lombok.experimental.PackagePrivate;
import org.eclipse.jdt.internal.compiler.ast.ASTNode;
import org.eclipse.jdt.internal.compiler.ast.Annotation;
import org.eclipse.jdt.internal.compiler.ast.FieldDeclaration;
import org.eclipse.jdt.internal.compiler.ast.QualifiedTypeReference;
import org.eclipse.jdt.internal.compiler.ast.SingleTypeReference;
import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
import org.eclipse.jdt.internal.compiler.ast.TypeReference;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
import org.mangosdk.spi.ProviderFor;
/**
* Handles the {@code lombok.FieldDefaults} annotation for eclipse.
*/
@ProviderFor(EclipseASTVisitor.class)
@HandlerPriority(-2048) //-2^11; to ensure @Value picks up on messing with the fields' 'final' state, run earlier.
public class HandleFieldDefaults extends EclipseASTAdapter {
public boolean generateFieldDefaultsForType(EclipseNode typeNode, EclipseNode pos, AccessLevel level, boolean makeFinal, boolean checkForTypeLevelFieldDefaults) {
if (checkForTypeLevelFieldDefaults) {
if (hasAnnotation(FieldDefaults.class, typeNode)) {
//The annotation will make it happen, so we can skip it.
return true;
}
}
TypeDeclaration typeDecl = null;
if (typeNode.get() instanceof TypeDeclaration) typeDecl = (TypeDeclaration) typeNode.get();
int modifiers = typeDecl == null ? 0 : typeDecl.modifiers;
boolean notAClass = (modifiers &
(ClassFileConstants.AccInterface | ClassFileConstants.AccAnnotation)) != 0;
if (typeDecl == null || notAClass) {
pos.addError("@FieldDefaults is only supported on a class or an enum.");
return false;
}
for (EclipseNode field : typeNode.down()) {
if (field.getKind() != Kind.FIELD) continue;
FieldDeclaration fieldDecl = (FieldDeclaration) field.get();
if (!filterField(fieldDecl, false)) continue;
Class<?> t = field.get().getClass();
if (t == FieldDeclaration.class) {
// There are various other things that extend FieldDeclaration that really
// aren't field declarations. Typing 'ma' in an otherwise blank class is a
// CompletionOnFieldType object (extends FieldDeclaration). If we mess with the
// modifiers of such a thing, you take away template suggestions such as
// 'main method'. See issue 411.
setFieldDefaultsForField(field, pos.get(), level, makeFinal);
}
}
return true;
}
public void setFieldDefaultsForField(EclipseNode fieldNode, ASTNode pos, AccessLevel level, boolean makeFinal) {
FieldDeclaration field = (FieldDeclaration) fieldNode.get();
if (level != null && level != AccessLevel.NONE) {
if ((field.modifiers & (ClassFileConstants.AccPublic | ClassFileConstants.AccPrivate | ClassFileConstants.AccProtected)) == 0) {
if (!hasAnnotation(PackagePrivate.class, fieldNode)) {
field.modifiers |= EclipseHandlerUtil.toEclipseModifier(level);
}
}
}
if (makeFinal && (field.modifiers & ClassFileConstants.AccFinal) == 0) {
if (!hasAnnotation(NonFinal.class, fieldNode)) {
if ((field.modifiers & ClassFileConstants.AccStatic) == 0 || field.initialization != null) {
field.modifiers |= ClassFileConstants.AccFinal;
}
}
}
fieldNode.rebuild();
}
private static final char[] FIELD_DEFAULTS = "FieldDefaults".toCharArray();
@Override public void visitType(EclipseNode typeNode, TypeDeclaration type) {
AnnotationValues<FieldDefaults> fieldDefaults = null;
EclipseNode source = typeNode;
boolean levelIsExplicit = false;
boolean makeFinalIsExplicit = false;
FieldDefaults fd = null;
for (EclipseNode jn : typeNode.down()) {
if (jn.getKind() != Kind.ANNOTATION) continue;
Annotation ann = (Annotation) jn.get();
TypeReference typeTree = ann.type;
if (typeTree == null) continue;
if (typeTree instanceof SingleTypeReference) {
char[] t = ((SingleTypeReference) typeTree).token;
if (!Arrays.equals(t, FIELD_DEFAULTS)) continue;
} else if (typeTree instanceof QualifiedTypeReference) {
char[][] t = ((QualifiedTypeReference) typeTree).tokens;
if (!Eclipse.nameEquals(t, "lombok.experimental.FieldDefaults")) continue;
} else {
continue;
}
if (!typeMatches(FieldDefaults.class, jn, typeTree)) continue;
source = jn;
fieldDefaults = createAnnotation(FieldDefaults.class, jn);
levelIsExplicit = fieldDefaults.isExplicit("level");
makeFinalIsExplicit = fieldDefaults.isExplicit("makeFinal");
handleExperimentalFlagUsage(jn, ConfigurationKeys.FIELD_DEFAULTS_FLAG_USAGE, "@FieldDefaults");
fd = fieldDefaults.getInstance();
if (!levelIsExplicit && !makeFinalIsExplicit) {
jn.addError("This does nothing; provide either level or makeFinal or both.");
}
if (levelIsExplicit && fd.level() == AccessLevel.NONE) {
jn.addError("AccessLevel.NONE doesn't mean anything here. Pick another value.");
levelIsExplicit = false;
}
break;
}
if (fd == null && (type.modifiers & (ClassFileConstants.AccInterface | ClassFileConstants.AccAnnotation)) != 0) return;
boolean defaultToPrivate = levelIsExplicit ? false : Boolean.TRUE.equals(typeNode.getAst().readConfiguration(ConfigurationKeys.FIELD_DEFAULTS_PRIVATE_EVERYWHERE));
boolean defaultToFinal = makeFinalIsExplicit ? false : Boolean.TRUE.equals(typeNode.getAst().readConfiguration(ConfigurationKeys.FIELD_DEFAULTS_FINAL_EVERYWHERE));
if (!defaultToPrivate && !defaultToFinal && fieldDefaults == null) return;
AccessLevel fdAccessLevel = (fieldDefaults != null && levelIsExplicit) ? fd.level() : defaultToPrivate ? AccessLevel.PRIVATE : null;
boolean fdToFinal = (fieldDefaults != null && makeFinalIsExplicit) ? fd.makeFinal() : defaultToFinal;
generateFieldDefaultsForType(typeNode, source, fdAccessLevel, fdToFinal, false);
}
}
|
