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ElementAltMethodImpl.java
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ElementAltMethodImpl.java
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/*
* Copyright (c) 2015, 2024 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.hk2.xml.internal.alt.papi;
import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.locks.ReentrantLock;
import javax.annotation.processing.ProcessingEnvironment;
import javax.lang.model.element.AnnotationMirror;
import javax.lang.model.element.Element;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.TypeElement;
import javax.lang.model.element.VariableElement;
import javax.lang.model.type.DeclaredType;
import javax.lang.model.type.ExecutableType;
import javax.lang.model.type.TypeKind;
import javax.lang.model.type.TypeMirror;
import org.glassfish.hk2.xml.internal.Utilities;
import org.glassfish.hk2.xml.internal.alt.AltAnnotation;
import org.glassfish.hk2.xml.internal.alt.AltClass;
import org.glassfish.hk2.xml.internal.alt.AltMethod;
import org.glassfish.hk2.xml.internal.alt.MethodInformationI;
import org.glassfish.hk2.xml.internal.alt.clazz.ClassAltClassImpl;
/**
* @author jwells
*
*/
public class ElementAltMethodImpl implements AltMethod {
private final ReentrantLock lock = new ReentrantLock();
private final ExecutableElement method;
private final ProcessingEnvironment processingEnv;
private List<AltClass> parameters;
private AltClass returnType;
private Map<String, AltAnnotation> annotations;
private MethodInformationI methodInformation;
public ElementAltMethodImpl(Element method, ProcessingEnvironment processingEnv) {
this.method = (ExecutableElement) method;
this.processingEnv = processingEnv;
}
/* (non-Javadoc)
* @see org.glassfish.hk2.xml.internal.alt.AltMethod#getName()
*/
@Override
public String getName() {
return Utilities.convertNameToString(method.getSimpleName());
}
/* (non-Javadoc)
* @see org.glassfish.hk2.xml.internal.alt.AltMethod#getReturnType()
*/
@Override
public AltClass getReturnType() {
lock.lock();
try {
if (returnType != null) return returnType;
ExecutableType executable = (ExecutableType) method.asType();
TypeMirror returnMirror = executable.getReturnType();
AltClass retVal = Utilities.convertTypeMirror(returnMirror, processingEnv);
returnType = retVal;
return returnType;
} finally {
lock.unlock();
}
}
/* (non-Javadoc)
* @see org.glassfish.hk2.xml.internal.alt.AltMethod#getParameterTypes()
*/
@Override
public List<AltClass> getParameterTypes() {
lock.lock();
try {
if (parameters != null) return parameters;
ExecutableType executable = (ExecutableType) method.asType();
List<? extends TypeMirror> paramMirrors = executable.getParameterTypes();
List<AltClass> retVal = new ArrayList<AltClass>(paramMirrors.size());
for (TypeMirror paramMirror : paramMirrors) {
retVal.add(Utilities.convertTypeMirror(paramMirror, processingEnv));
}
parameters = Collections.unmodifiableList(retVal);
return parameters;
} finally {
lock.unlock();
}
}
/* (non-Javadoc)
* @see org.glassfish.hk2.xml.internal.alt.AltMethod#getFirstTypeArgument()
*/
@Override
public AltClass getFirstTypeArgument() {
TypeMirror typeMirror = method.getReturnType();
if (!(typeMirror instanceof DeclaredType)) return null;
DeclaredType declaredReturn = (DeclaredType) typeMirror;
List<? extends TypeMirror> types = declaredReturn.getTypeArguments();
if (types == null || types.size() < 1) return null;
TypeMirror firstTypeMirror = types.get(0);
return Utilities.convertTypeMirror(firstTypeMirror, processingEnv);
}
/* (non-Javadoc)
* @see org.glassfish.hk2.xml.internal.alt.AltMethod#getFirstTypeArgumentOfParameter(int)
*/
@Override
public AltClass getFirstTypeArgumentOfParameter(int index) {
VariableElement ve = method.getParameters().get(index);
TypeMirror tm = ve.asType();
if (!TypeKind.DECLARED.equals(tm.getKind())) {
return ClassAltClassImpl.OBJECT;
}
DeclaredType dt = (DeclaredType) tm;
List<? extends TypeMirror> typeParams = dt.getTypeArguments();
if (typeParams == null || typeParams.size() < 1) {
return ClassAltClassImpl.OBJECT;
}
TypeMirror firstTypeParam = typeParams.get(0);
if (!TypeKind.DECLARED.equals(firstTypeParam.getKind())) {
return ClassAltClassImpl.OBJECT;
}
Element ele = ((DeclaredType) firstTypeParam).asElement();
if (!(ele instanceof TypeElement)) {
return ClassAltClassImpl.OBJECT;
}
return new TypeElementAltClassImpl((TypeElement) ele, processingEnv);
}
/* (non-Javadoc)
* @see org.glassfish.hk2.xml.internal.alt.AltMethod#getAnnotation(java.lang.String)
*/
@Override
public AltAnnotation getAnnotation(String annotation) {
lock.lock();
try {
if (annotations == null) {
getAnnotations();
}
return annotations.get(annotation);
} finally {
lock.unlock();
}
}
/* (non-Javadoc)
* @see org.glassfish.hk2.xml.internal.alt.AltMethod#getAnnotations()
*/
@Override
public List<AltAnnotation> getAnnotations() {
lock.lock();
try {
if (annotations != null) {
return Collections.unmodifiableList(new ArrayList<AltAnnotation>(annotations.values()));
}
Map<String, AltAnnotation> retVal = new LinkedHashMap<String, AltAnnotation>();
for (AnnotationMirror annoMirror : method.getAnnotationMirrors()) {
AnnotationMirrorAltAnnotationImpl addMe = new AnnotationMirrorAltAnnotationImpl(annoMirror, processingEnv);
retVal.put(addMe.annotationType(), addMe);
}
annotations = Collections.unmodifiableMap(retVal);
return Collections.unmodifiableList(new ArrayList<AltAnnotation>(annotations.values()));
} finally {
lock.unlock();
}
}
@Override
public void setMethodInformation(MethodInformationI methodInfo) {
methodInformation = methodInfo;
}
@Override
public MethodInformationI getMethodInformation() {
return methodInformation;
}
/* (non-Javadoc)
* @see org.glassfish.hk2.xml.internal.alt.AltMethod#isVarArgs()
*/
@Override
public boolean isVarArgs() {
return method.isVarArgs();
}
@Override
public String toString() {
return "ElementAltMethodImpl(" + method + ")";
}
}