mirror of
https://github.com/tiennm99/lombok.git
synced 2026-10-15 10:15:19 +00:00
New Annotation: FieldNameConstants.
This commit is contained in:
michiel authored and Michiel Verheul committed
1 parent
25b78d3132
commit
73844e37ea
3 files changed
+264
No files matched your search
@@ -0,0 +1,13 @@
|
||||
package lombok;
|
||||
|
||||
import java.lang.annotation.ElementType;
|
||||
import java.lang.annotation.Retention;
|
||||
import java.lang.annotation.RetentionPolicy;
|
||||
import java.lang.annotation.Target;
|
||||
|
||||
@Target(ElementType.TYPE)
|
||||
@Retention(RetentionPolicy.SOURCE)
|
||||
public @interface FieldNameConstants {
|
||||
|
||||
lombok.AccessLevel level()default lombok.AccessLevel.PUBLIC;
|
||||
}
|
||||
@@ -0,0 +1,129 @@
|
||||
package lombok.eclipse.handlers;
|
||||
|
||||
import static java.lang.Character.*;
|
||||
import static lombok.eclipse.handlers.EclipseHandlerUtil.*;
|
||||
|
||||
import java.lang.reflect.Modifier;
|
||||
import java.util.Collection;
|
||||
|
||||
import lombok.AccessLevel;
|
||||
import lombok.FieldNameConstants;
|
||||
import lombok.core.AST.Kind;
|
||||
import lombok.core.AnnotationValues;
|
||||
import lombok.eclipse.Eclipse;
|
||||
import lombok.eclipse.EclipseAnnotationHandler;
|
||||
import lombok.eclipse.EclipseNode;
|
||||
|
||||
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.StringLiteral;
|
||||
import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
|
||||
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
|
||||
import org.eclipse.jdt.internal.compiler.lookup.TypeConstants;
|
||||
import org.mangosdk.spi.ProviderFor;
|
||||
|
||||
@ProviderFor(EclipseAnnotationHandler.class) public class HandleFieldNameConstants extends EclipseAnnotationHandler<FieldNameConstants> {
|
||||
|
||||
public boolean generateFieldDefaultsForType(EclipseNode typeNode, EclipseNode errorNode, AccessLevel level, boolean checkForTypeLevelFieldNameConstants) {
|
||||
|
||||
if (checkForTypeLevelFieldNameConstants) {
|
||||
if (hasAnnotation(FieldNameConstants.class, typeNode)) {
|
||||
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) {
|
||||
errorNode.addError("@FieldNameConstants is only supported on a class or an enum or a field.");
|
||||
return false;
|
||||
}
|
||||
|
||||
for (EclipseNode field : typeNode.down()) {
|
||||
if (fieldQualifiesForFieldNameConstantsGeneration(field)) generateFieldNameConstantsForField(field, errorNode.get(), level);
|
||||
if (field.getKind() != Kind.FIELD) return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
private void generateFieldNameConstantsForField(EclipseNode fieldNode, ASTNode pos, AccessLevel level) {
|
||||
if (hasAnnotation(FieldNameConstants.class, fieldNode)) {
|
||||
return;
|
||||
}
|
||||
createFieldNameConstantsForField(level, fieldNode, fieldNode, pos, false);
|
||||
}
|
||||
|
||||
private void createFieldNameConstantsForField(AccessLevel level, EclipseNode fieldNode, EclipseNode errorNode, ASTNode source, boolean whineIfExists) {
|
||||
if (fieldNode.getKind() != Kind.FIELD) {
|
||||
errorNode.addError("@FieldNameConstants is only supported on a class or a field");
|
||||
return;
|
||||
}
|
||||
FieldDeclaration field = (FieldDeclaration) fieldNode.get();
|
||||
String constantName = camelCaseToConstant(new String(field.name));
|
||||
if (constantName == null) {
|
||||
errorNode.addWarning("Not generating constant for this field: It does not fit in your @Accessors prefix list");
|
||||
return;
|
||||
}
|
||||
int pS = source.sourceStart, pE = source.sourceEnd;
|
||||
long p = (long) pS << 32 | pE;
|
||||
FieldDeclaration fieldConstant = new FieldDeclaration(constantName.toCharArray(), pS,pE);
|
||||
fieldConstant.bits |= Eclipse.ECLIPSE_DO_NOT_TOUCH_FLAG;
|
||||
fieldConstant.modifiers = toEclipseModifier(level) | Modifier.STATIC | Modifier.FINAL;
|
||||
fieldConstant.type = new QualifiedTypeReference(TypeConstants.JAVA_LANG_STRING, new long[]{p,p,p});
|
||||
fieldConstant.initialization = new StringLiteral(field.name, pS,pE,0);
|
||||
injectField(fieldNode.up(), fieldConstant);
|
||||
}
|
||||
|
||||
private boolean fieldQualifiesForFieldNameConstantsGeneration(EclipseNode field) {
|
||||
if (field.getKind() != Kind.FIELD) return false;
|
||||
FieldDeclaration fieldDecl = (FieldDeclaration) field.get();
|
||||
return filterField(fieldDecl);
|
||||
}
|
||||
|
||||
public void handle(AnnotationValues<FieldNameConstants> annotation, Annotation ast, EclipseNode annotationNode) {
|
||||
EclipseNode node = annotationNode.up();
|
||||
FieldNameConstants annotatationInstance = annotation.getInstance();
|
||||
AccessLevel level = annotatationInstance.level();
|
||||
if (node == null) return;
|
||||
switch (node.getKind()){
|
||||
case FIELD:
|
||||
createFieldNameConstantsForFields(level, annotationNode.upFromAnnotationToFields(), annotationNode, annotationNode.get(), true);
|
||||
break;
|
||||
case TYPE:
|
||||
generateFieldDefaultsForType(node, annotationNode, level, false);
|
||||
break;
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
private void createFieldNameConstantsForFields(AccessLevel level, Collection<EclipseNode> fieldNodes, EclipseNode errorNode, ASTNode source, boolean whineIfExists) {
|
||||
for (EclipseNode fieldNode : fieldNodes){
|
||||
createFieldNameConstantsForField(level, fieldNode, errorNode, source, whineIfExists);
|
||||
}
|
||||
}
|
||||
|
||||
public static String camelCaseToConstant(final String fieldName) {
|
||||
if (fieldName == null || fieldName.isEmpty()) return "";
|
||||
char[] chars = fieldName.toCharArray();
|
||||
StringBuilder b = new StringBuilder();
|
||||
b.append(toUpperCase(chars[0]));
|
||||
for (int i = 1, iend = chars.length; i < iend; i++) {
|
||||
char c = chars[i];
|
||||
if (isUpperCase(c)) {
|
||||
b.append('_');
|
||||
} else {
|
||||
c = toUpperCase(c);
|
||||
}
|
||||
b.append(c);
|
||||
}
|
||||
return b.toString();
|
||||
}
|
||||
|
||||
}
|
||||
@@ -0,0 +1,122 @@
|
||||
package lombok.javac.handlers;
|
||||
|
||||
import static lombok.javac.handlers.JavacHandlerUtil.*;
|
||||
|
||||
import java.lang.reflect.Modifier;
|
||||
import java.util.Collection;
|
||||
|
||||
import lombok.AccessLevel;
|
||||
import lombok.FieldNameConstants;
|
||||
import lombok.core.AST.Kind;
|
||||
import lombok.core.AnnotationValues;
|
||||
import lombok.javac.JavacAnnotationHandler;
|
||||
import lombok.javac.JavacNode;
|
||||
import lombok.javac.JavacTreeMaker;
|
||||
|
||||
import org.mangosdk.spi.ProviderFor;
|
||||
|
||||
import com.sun.tools.javac.code.Flags;
|
||||
import com.sun.tools.javac.tree.JCTree.JCAnnotation;
|
||||
import com.sun.tools.javac.tree.JCTree.JCClassDecl;
|
||||
import com.sun.tools.javac.tree.JCTree.JCExpression;
|
||||
import com.sun.tools.javac.tree.JCTree.JCModifiers;
|
||||
import com.sun.tools.javac.tree.JCTree.JCVariableDecl;
|
||||
import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;
|
||||
import com.sun.tools.javac.util.List;
|
||||
|
||||
@ProviderFor(JavacAnnotationHandler.class) @SuppressWarnings("restriction") public class HandleFieldConstants extends JavacAnnotationHandler<FieldNameConstants> {
|
||||
|
||||
public void generateFieldDefaultsForType(JavacNode typeNode, JavacNode errorNode, AccessLevel level, boolean checkForTypeLevelFieldNameConstants) {
|
||||
|
||||
if (checkForTypeLevelFieldNameConstants) {
|
||||
if (hasAnnotation(FieldNameConstants.class, typeNode)) {
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
JCClassDecl typeDecl = null;
|
||||
if (typeNode.get() instanceof JCClassDecl) typeDecl = (JCClassDecl) typeNode.get();
|
||||
|
||||
long modifiers = typeDecl == null ? 0 : typeDecl.mods.flags;
|
||||
boolean notAClass = (modifiers & (Flags.INTERFACE | Flags.ANNOTATION)) != 0;
|
||||
|
||||
if (typeDecl == null || notAClass) {
|
||||
errorNode.addError("@FieldNameConstants is only supported on a class or an enum or a field.");
|
||||
return;
|
||||
}
|
||||
|
||||
for (JavacNode field : typeNode.down()) {
|
||||
if (fieldQualifiesForFieldNameConstantsGeneration(field)) generateFieldNameConstantsForField(field, errorNode.get(), level);
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
private void generateFieldNameConstantsForField(JavacNode fieldNode, DiagnosticPosition pos, AccessLevel level) {
|
||||
if (hasAnnotation(FieldNameConstants.class, fieldNode)) {
|
||||
return;
|
||||
}
|
||||
createFieldNameConstantsForField(level, fieldNode, fieldNode, false, List.<JCAnnotation>nil());
|
||||
}
|
||||
|
||||
private boolean fieldQualifiesForFieldNameConstantsGeneration(JavacNode field) {
|
||||
if (field.getKind() != Kind.FIELD) return false;
|
||||
JCVariableDecl fieldDecl = (JCVariableDecl) field.get();
|
||||
if (fieldDecl.name.toString().startsWith("$")) return false;
|
||||
if ((fieldDecl.mods.flags & Flags.STATIC) != 0) return false;
|
||||
return true;
|
||||
}
|
||||
|
||||
public void handle(AnnotationValues<FieldNameConstants> annotation, JCAnnotation ast, JavacNode annotationNode) {
|
||||
|
||||
Collection<JavacNode> fields = annotationNode.upFromAnnotationToFields();
|
||||
deleteAnnotationIfNeccessary(annotationNode, FieldNameConstants.class);
|
||||
deleteImportFromCompilationUnit(annotationNode, "lombok.AccessLevel");
|
||||
JavacNode node = annotationNode.up();
|
||||
FieldNameConstants annotatationInstance = annotation.getInstance();
|
||||
AccessLevel level = annotatationInstance.level();
|
||||
if (level == AccessLevel.NONE) {
|
||||
annotationNode.addWarning("'lazy' does not work with AccessLevel.NONE.");
|
||||
return;
|
||||
}
|
||||
if (node == null) return;
|
||||
List<JCAnnotation> onMethod = unboxAndRemoveAnnotationParameter(ast, "onMethod", "@FieldNameConstants(onMethod=", annotationNode);
|
||||
switch (node.getKind()) {
|
||||
case FIELD:
|
||||
createFieldNameConstantsForFields(level, fields, annotationNode, annotationNode, true, onMethod);
|
||||
break;
|
||||
case TYPE:
|
||||
if (!onMethod.isEmpty()) {
|
||||
annotationNode.addError("'onMethod' is not supported for @FieldConstants on a type.");
|
||||
}
|
||||
generateFieldDefaultsForType(node, annotationNode, level, false);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
private void createFieldNameConstantsForFields(AccessLevel level, Collection<JavacNode> fieldNodes, JavacNode annotationNode, JavacNode errorNode, boolean whineIfExists, List<JCAnnotation> onMethod) {
|
||||
for (JavacNode fieldNode : fieldNodes) {
|
||||
createFieldNameConstantsForField(level, fieldNode, errorNode, whineIfExists, onMethod);
|
||||
}
|
||||
}
|
||||
|
||||
private void createFieldNameConstantsForField(AccessLevel level, JavacNode fieldNode, JavacNode source, boolean whineIfExists, List<JCAnnotation> onMethod) {
|
||||
if (fieldNode.getKind() != Kind.FIELD) {
|
||||
source.addError("@FieldNameConstants is only supported on a class or a field");
|
||||
return;
|
||||
}
|
||||
JCVariableDecl field = (JCVariableDecl) fieldNode.get();
|
||||
String constantName = lombok.eclipse.handlers.HandleFieldNameConstants.camelCaseToConstant(field.name.toString());
|
||||
if (constantName == null) {
|
||||
source.addWarning("Not generating constant for this field: It does not fit in your @Accessors prefix list");
|
||||
return;
|
||||
}
|
||||
|
||||
JavacTreeMaker treeMaker = fieldNode.getTreeMaker();
|
||||
JCModifiers modifiers = treeMaker.Modifiers(toJavacModifier(level) & Modifier.STATIC & Modifier.FINAL);
|
||||
JCExpression returnType = chainDots(fieldNode, "java", "lang", "String");
|
||||
JCExpression init = treeMaker.Literal(fieldNode.getName());
|
||||
JCVariableDecl fieldConstant = treeMaker.VarDef(modifiers, fieldNode.toName(constantName), returnType, init);
|
||||
injectField(fieldNode.up(), fieldConstant);
|
||||
}
|
||||
|
||||
}
|
||||
Reference in new issue
Block a user