diff options
Diffstat (limited to 'src/core/lombok/eclipse/handlers')
| -rw-r--r-- | src/core/lombok/eclipse/handlers/EclipseHandlerUtil.java | 2 | ||||
| -rw-r--r-- | src/core/lombok/eclipse/handlers/HandleFieldNameConstants.java | 129 |
2 files changed, 130 insertions, 1 deletions
diff --git a/src/core/lombok/eclipse/handlers/EclipseHandlerUtil.java b/src/core/lombok/eclipse/handlers/EclipseHandlerUtil.java index 6617d21a..c49107e5 100644 --- a/src/core/lombok/eclipse/handlers/EclipseHandlerUtil.java +++ b/src/core/lombok/eclipse/handlers/EclipseHandlerUtil.java @@ -1097,7 +1097,7 @@ public class EclipseHandlerUtil { public static boolean filterField(FieldDeclaration declaration, boolean skipStatic) { // Skip the fake fields that represent enum constants. if (declaration.initialization instanceof AllocationExpression && - ((AllocationExpression)declaration.initialization).enumConstant != null) return false; + ((AllocationExpression) declaration.initialization).enumConstant != null) return false; if (declaration.type == null) return false; diff --git a/src/core/lombok/eclipse/handlers/HandleFieldNameConstants.java b/src/core/lombok/eclipse/handlers/HandleFieldNameConstants.java new file mode 100644 index 00000000..754ddf47 --- /dev/null +++ b/src/core/lombok/eclipse/handlers/HandleFieldNameConstants.java @@ -0,0 +1,129 @@ +/* + * Copyright (C) 2014-2018 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.handleExperimentalFlagUsage; +import static lombok.eclipse.handlers.EclipseHandlerUtil.*; + +import java.lang.reflect.Modifier; +import java.util.Collection; + +import lombok.AccessLevel; +import lombok.ConfigurationKeys; +import lombok.core.AST.Kind; +import lombok.core.AnnotationValues; +import lombok.core.handlers.HandlerUtil; +import lombok.eclipse.Eclipse; +import lombok.eclipse.EclipseAnnotationHandler; +import lombok.eclipse.EclipseNode; +import lombok.experimental.FieldNameConstants; + +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 void generateFieldNameConstantsForType(EclipseNode typeNode, EclipseNode errorNode, AccessLevel level) { + 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, an enum, or a field."); + return; + } + + for (EclipseNode field : typeNode.down()) { + if (fieldQualifiesForFieldNameConstantsGeneration(field)) generateFieldNameConstantsForField(field, errorNode.get(), level); + } + } + + private void generateFieldNameConstantsForField(EclipseNode fieldNode, ASTNode pos, AccessLevel level) { + if (hasAnnotation(FieldNameConstants.class, fieldNode)) return; + createFieldNameConstantsForField(level, fieldNode, fieldNode, pos, false); + } + + 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) { + handleExperimentalFlagUsage(annotationNode, ConfigurationKeys.FIELD_NAME_CONSTANTS_FLAG_USAGE, "@FieldNameConstants"); + + EclipseNode node = annotationNode.up(); + FieldNameConstants annotatationInstance = annotation.getInstance(); + AccessLevel level = annotatationInstance.level(); + if (node == null) return; + + switch (node.getKind()) { + case FIELD: + if (level != AccessLevel.NONE) createFieldNameConstantsForFields(level, annotationNode.upFromAnnotationToFields(), annotationNode, annotationNode.get(), true); + break; + case TYPE: + if (level == AccessLevel.NONE) { + annotationNode.addWarning("type-level '@FieldNameConstants' does not work with AccessLevel.NONE."); + return; + } + generateFieldNameConstantsForType(node, annotationNode, level); + 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); + } + + 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, an enum, or a field"); + return; + } + + FieldDeclaration field = (FieldDeclaration) fieldNode.get(); + String fieldName = new String(field.name); + String constantName = HandlerUtil.camelCaseToConstant(fieldName); + if (constantName.equals(fieldName)) { + fieldNode.addWarning("Not generating constant for this field: The name of the constant would be equal to the name of this field."); + 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); + } +} |