| /* |
| * Copyright 2000-2013 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.psi; |
| |
| import com.intellij.psi.meta.PsiMetaOwner; |
| import com.intellij.util.ArrayFactory; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * Represents a Java annotation. |
| * |
| * @author ven |
| */ |
| public interface PsiAnnotation extends PsiAnnotationMemberValue, PsiMetaOwner { |
| /** |
| * The empty array of PSI annotations which can be reused to avoid unnecessary allocations. |
| */ |
| PsiAnnotation[] EMPTY_ARRAY = new PsiAnnotation[0]; |
| |
| ArrayFactory<PsiAnnotation> ARRAY_FACTORY = new ArrayFactory<PsiAnnotation>() { |
| @NotNull |
| @Override |
| public PsiAnnotation[] create(final int count) { |
| return count == 0 ? EMPTY_ARRAY : new PsiAnnotation[count]; |
| } |
| }; |
| |
| @NonNls String DEFAULT_REFERENCED_METHOD_NAME = "value"; |
| |
| /** |
| * Kinds of element to which an annotation type is applicable (see {@link java.lang.annotation.ElementType}). |
| */ |
| enum TargetType { |
| // see java.lang.annotation.ElementType |
| TYPE, FIELD, METHOD, PARAMETER, CONSTRUCTOR, LOCAL_VARIABLE, ANNOTATION_TYPE, PACKAGE, TYPE_USE, TYPE_PARAMETER, |
| // auxiliary value, used when it's impossible to determine annotation's targets |
| UNKNOWN; |
| |
| public static final TargetType[] EMPTY_ARRAY = {}; |
| } |
| |
| /** |
| * Returns the list of parameters for the annotation. |
| * |
| * @return the parameter list instance. |
| */ |
| @NotNull |
| PsiAnnotationParameterList getParameterList(); |
| |
| /** |
| * Returns the fully qualified name of the annotation class. |
| * |
| * @return the class name, or null if the annotation is unresolved. |
| */ |
| @Nullable |
| @NonNls |
| String getQualifiedName(); |
| |
| /** |
| * Returns the reference element representing the name of the annotation. |
| * |
| * @return the annotation name element. |
| */ |
| @Nullable |
| PsiJavaCodeReferenceElement getNameReferenceElement(); |
| |
| /** |
| * Returns the value of the annotation element with the specified name. |
| * |
| * @param attributeName name of the annotation element for which the value is requested. If it isn't defined in annotation, |
| * the default value is returned. |
| * @return the element value, or null if the annotation does not contain a value for |
| * the element and the element has no default value. |
| */ |
| @Nullable |
| PsiAnnotationMemberValue findAttributeValue(@Nullable @NonNls String attributeName); |
| |
| /** |
| * Returns the value of the annotation element with the specified name. |
| * |
| * @param attributeName name of the annotation element for which the value is requested, declared in this annotation. |
| * @return the element value, or null if the annotation does not contain a value for |
| * the element. |
| */ |
| @Nullable |
| PsiAnnotationMemberValue findDeclaredAttributeValue(@Nullable @NonNls String attributeName); |
| |
| /** |
| * Set annotation attribute value. Adds new name-value pair or uses an existing one, expands unnamed 'value' attribute name if needed. |
| * |
| * @param attributeName attribute name |
| * @param value new value template element |
| * @return new declared attribute value |
| */ |
| <T extends PsiAnnotationMemberValue> T setDeclaredAttributeValue(@Nullable @NonNls String attributeName, @Nullable T value); |
| |
| /** |
| * Returns an owner of the annotation - usually a parent, but for type annotations the owner might be a type element. |
| * |
| * @return annotation owner |
| */ |
| @Nullable |
| PsiAnnotationOwner getOwner(); |
| } |