org.jetbrains.kotlin.resolve.jvm.kotlinSignature.SignaturesUtil Maven / Gradle / Ivy
/*
* Copyright 2010-2015 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 org.jetbrains.kotlin.resolve.jvm.kotlinSignature;
import com.intellij.openapi.util.text.StringUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.kotlin.load.java.components.ExternalAnnotationResolver;
import org.jetbrains.kotlin.load.java.structure.*;
import org.jetbrains.kotlin.name.FqName;
import static org.jetbrains.kotlin.load.java.JvmAnnotationNames.*;
public class SignaturesUtil {
private SignaturesUtil() {
}
@Nullable
public static String getKotlinSignature(@NotNull ExternalAnnotationResolver externalAnnotationResolver, @NotNull JavaMember member) {
JavaAnnotation newAnnotation = findAnnotationWithExternal(externalAnnotationResolver, member, KOTLIN_SIGNATURE);
if (newAnnotation != null) return extractKotlinSignatureArgument(newAnnotation);
JavaAnnotation oldAnnotation = findAnnotationWithExternal(externalAnnotationResolver, member, OLD_KOTLIN_SIGNATURE);
if (oldAnnotation != null) return extractKotlinSignatureArgument(oldAnnotation);
return null;
}
@Nullable
private static String extractKotlinSignatureArgument(@NotNull JavaAnnotation annotation) {
JavaAnnotationArgument argument = annotation.findArgument(DEFAULT_ANNOTATION_MEMBER_NAME);
if (argument instanceof JavaLiteralAnnotationArgument) {
Object value = ((JavaLiteralAnnotationArgument) argument).getValue();
if (value instanceof String) {
return StringUtil.unescapeStringCharacters((String) value);
}
}
return null;
}
@Nullable
public static JavaAnnotation findAnnotationWithExternal(@NotNull ExternalAnnotationResolver externalAnnotationResolver, @NotNull JavaAnnotationOwner owner, @NotNull FqName name) {
JavaAnnotation annotation = owner.findAnnotation(name);
if (annotation != null) {
return annotation;
}
return externalAnnotationResolver.findExternalAnnotation(owner, name);
}
}