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
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
/*
* Copyright © 2009 Reinier Zwitserloot and Roel Spilker.
*
* 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.eclipse.Eclipse.*;
import static lombok.eclipse.handlers.PKG.*;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import lombok.AccessLevel;
import lombok.Data;
import lombok.core.AnnotationValues;
import lombok.core.AST.Kind;
import lombok.eclipse.Eclipse;
import lombok.eclipse.EclipseAnnotationHandler;
import lombok.eclipse.EclipseAST.Node;
import lombok.eclipse.handlers.PKG.MemberExistsResult;
import org.eclipse.jdt.internal.compiler.ast.ASTNode;
import org.eclipse.jdt.internal.compiler.ast.AllocationExpression;
import org.eclipse.jdt.internal.compiler.ast.Annotation;
import org.eclipse.jdt.internal.compiler.ast.Argument;
import org.eclipse.jdt.internal.compiler.ast.Assignment;
import org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration;
import org.eclipse.jdt.internal.compiler.ast.ConstructorDeclaration;
import org.eclipse.jdt.internal.compiler.ast.ExplicitConstructorCall;
import org.eclipse.jdt.internal.compiler.ast.Expression;
import org.eclipse.jdt.internal.compiler.ast.FieldDeclaration;
import org.eclipse.jdt.internal.compiler.ast.FieldReference;
import org.eclipse.jdt.internal.compiler.ast.MethodDeclaration;
import org.eclipse.jdt.internal.compiler.ast.ParameterizedSingleTypeReference;
import org.eclipse.jdt.internal.compiler.ast.ReturnStatement;
import org.eclipse.jdt.internal.compiler.ast.SingleNameReference;
import org.eclipse.jdt.internal.compiler.ast.SingleTypeReference;
import org.eclipse.jdt.internal.compiler.ast.Statement;
import org.eclipse.jdt.internal.compiler.ast.ThisReference;
import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
import org.eclipse.jdt.internal.compiler.ast.TypeParameter;
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.Data</code> annotation for eclipse.
*/
@ProviderFor(EclipseAnnotationHandler.class)
public class HandleData implements EclipseAnnotationHandler<Data> {
public boolean handle(AnnotationValues<Data> annotation, Annotation ast, Node annotationNode) {
Data ann = annotation.getInstance();
Node typeNode = annotationNode.up();
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 | ClassFileConstants.AccEnum)) != 0;
if ( typeDecl == null || notAClass ) {
annotationNode.addError("@Data is only supported on a class.");
return false;
}
List<Node> nodesForConstructor = new ArrayList<Node>();
for ( Node child : typeNode.down() ) {
if ( child.getKind() != Kind.FIELD ) continue;
FieldDeclaration fieldDecl = (FieldDeclaration) child.get();
//Skip static fields.
if ( (fieldDecl.modifiers & ClassFileConstants.AccStatic) != 0 ) continue;
boolean isFinal = (fieldDecl.modifiers & ClassFileConstants.AccFinal) != 0;
if ( isFinal && fieldDecl.initialization == null ) nodesForConstructor.add(child);
new HandleGetter().generateGetterForField(child, annotationNode.get());
if ( !isFinal ) new HandleSetter().generateSetterForField(child, annotationNode.get());
}
new HandleToString().generateToStringForType(typeNode, annotationNode);
new HandleEqualsAndHashCode().generateEqualsAndHashCodeForType(typeNode, annotationNode);
//Careful: Generate the public static constructor (if there is one) LAST, so that any attempt to
//'find callers' on the annotation node will find callers of the constructor, which is by far the
//most useful of the many methods built by @Data. This trick won't work for the non-static constructor,
//for whatever reason, though you can find callers of that one by focussing on the class name itself
//and hitting 'find callers'.
if ( constructorExists(typeNode) == MemberExistsResult.NOT_EXISTS ) {
ConstructorDeclaration constructor = createConstructor(
ann.staticConstructor().length() == 0, typeNode, nodesForConstructor, ast);
injectMethod(typeNode, constructor);
}
if ( ann.staticConstructor().length() > 0 ) {
if ( methodExists("of", typeNode) == MemberExistsResult.NOT_EXISTS ) {
MethodDeclaration staticConstructor = createStaticConstructor(
ann.staticConstructor(), typeNode, nodesForConstructor, ast);
injectMethod(typeNode, staticConstructor);
}
}
return false;
}
private ConstructorDeclaration createConstructor(boolean isPublic, Node type, Collection<Node> fields, ASTNode pos) {
long p = (long)pos.sourceStart << 32 | pos.sourceEnd;
ConstructorDeclaration constructor = new ConstructorDeclaration(
((CompilationUnitDeclaration) type.top().get()).compilationResult);
constructor.modifiers = PKG.toModifier(isPublic ? AccessLevel.PUBLIC : AccessLevel.PRIVATE);
constructor.annotations = null;
constructor.selector = ((TypeDeclaration)type.get()).name;
constructor.constructorCall = new ExplicitConstructorCall(ExplicitConstructorCall.ImplicitSuper);
constructor.thrownExceptions = null;
constructor.typeParameters = null;
constructor.bits |= Eclipse.ECLIPSE_DO_NOT_TOUCH_FLAG;
constructor.bodyStart = constructor.declarationSourceStart = constructor.sourceStart = pos.sourceStart;
constructor.bodyEnd = constructor.declarationSourceEnd = constructor.sourceEnd = pos.sourceEnd;
constructor.arguments = null;
List<Argument> args = new ArrayList<Argument>();
List<Statement> assigns = new ArrayList<Statement>();
for ( Node fieldNode : fields ) {
FieldDeclaration field = (FieldDeclaration) fieldNode.get();
FieldReference thisX = new FieldReference(("this." + new String(field.name)).toCharArray(), p);
thisX.receiver = new ThisReference((int)(p >> 32), (int)p);
thisX.token = field.name;
assigns.add(new Assignment(thisX, new SingleNameReference(field.name, p), (int)p));
long fieldPos = (((long)field.sourceStart) << 32) | field.sourceEnd;
args.add(new Argument(field.name, fieldPos, copyType(field.type), 0));
}
constructor.statements = assigns.isEmpty() ? null : assigns.toArray(new Statement[assigns.size()]);
constructor.arguments = args.isEmpty() ? null : args.toArray(new Argument[args.size()]);
return constructor;
}
private MethodDeclaration createStaticConstructor(String name, Node type, Collection<Node> fields, ASTNode pos) {
long p = (long)pos.sourceStart << 32 | pos.sourceEnd;
MethodDeclaration constructor = new MethodDeclaration(
((CompilationUnitDeclaration) type.top().get()).compilationResult);
constructor.modifiers = PKG.toModifier(AccessLevel.PUBLIC) | Modifier.STATIC;
TypeDeclaration typeDecl = (TypeDeclaration) type.get();
if ( typeDecl.typeParameters != null && typeDecl.typeParameters.length > 0 ) {
TypeReference[] refs = new TypeReference[typeDecl.typeParameters.length];
int idx = 0;
for ( TypeParameter param : typeDecl.typeParameters ) {
refs[idx++] = new SingleTypeReference(param.name, (long)param.sourceStart << 32 | param.sourceEnd);
}
constructor.returnType = new ParameterizedSingleTypeReference(typeDecl.name, refs, 0, p);
} else constructor.returnType = new SingleTypeReference(((TypeDeclaration)type.get()).name, p);
constructor.annotations = null;
constructor.selector = name.toCharArray();
constructor.thrownExceptions = null;
constructor.typeParameters = copyTypeParams(((TypeDeclaration)type.get()).typeParameters);
constructor.bits |= Eclipse.ECLIPSE_DO_NOT_TOUCH_FLAG;
constructor.bodyStart = constructor.declarationSourceStart = constructor.sourceStart = pos.sourceStart;
constructor.bodyEnd = constructor.declarationSourceEnd = constructor.sourceEnd = pos.sourceEnd;
List<Argument> args = new ArrayList<Argument>();
List<Expression> assigns = new ArrayList<Expression>();
AllocationExpression statement = new AllocationExpression();
statement.type = copyType(constructor.returnType);
for ( Node fieldNode : fields ) {
FieldDeclaration field = (FieldDeclaration) fieldNode.get();
long fieldPos = (((long)field.sourceStart) << 32) | field.sourceEnd;
assigns.add(new SingleNameReference(field.name, fieldPos));
args.add(new Argument(field.name, fieldPos, copyType(field.type), 0));
}
statement.arguments = assigns.isEmpty() ? null : assigns.toArray(new Expression[assigns.size()]);
constructor.arguments = args.isEmpty() ? null : args.toArray(new Argument[args.size()]);
constructor.statements = new Statement[] { new ReturnStatement(statement, (int)(p >> 32), (int)p) };
return constructor;
}
}
|
