/*
* Copyright (C) 2011 Wayne Meissner
*
* This file is part of the JNR project.
*
* 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 jnr.ffi.provider.jffi;
import jnr.ffi.NativeType;
import jnr.ffi.annotations.Delegate;
import jnr.ffi.mapper.*;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.Collection;
import static jnr.ffi.util.Annotations.sortedAnnotationCollection;
/**
*
*/
final class ClosureUtil {
private ClosureUtil() {
}
static jnr.ffi.provider.ToNativeType getResultType(jnr.ffi.Runtime runtime, Method m, SignatureTypeMapper typeMapper) {
Collection<Annotation> annotations = sortedAnnotationCollection(m.getAnnotations());
ToNativeContext context = new SimpleNativeContext(runtime, annotations);
SignatureType signatureType = DefaultSignatureType.create(m.getReturnType(), context);
jnr.ffi.mapper.ToNativeType toNativeType = typeMapper.getToNativeType(signatureType, context);
ToNativeConverter converter = toNativeType != null ? toNativeType.getToNativeConverter() : null;
Class javaClass = converter != null ? converter.nativeType() : m.getReturnType();
NativeType nativeType = Types.getType(runtime, javaClass, annotations).getNativeType();
return new jnr.ffi.provider.ToNativeType(m.getReturnType(), nativeType, annotations, converter, null);
}
static jnr.ffi.provider.FromNativeType getParameterType(jnr.ffi.Runtime runtime, Method m, int idx, SignatureTypeMapper typeMapper) {
Collection<Annotation> annotations = sortedAnnotationCollection(m.getParameterAnnotations()[idx]);
Class declaredJavaClass = m.getParameterTypes()[idx];
FromNativeContext context = new SimpleNativeContext(runtime, annotations);
SignatureType signatureType = DefaultSignatureType.create(declaredJavaClass, context);
jnr.ffi.mapper.FromNativeType fromNativeType = typeMapper.getFromNativeType(signatureType, context);
FromNativeConverter converter = fromNativeType != null ? fromNativeType.getFromNativeConverter() : null;
Class javaClass = converter != null ? converter.nativeType() : declaredJavaClass;
NativeType nativeType = Types.getType(runtime, javaClass, annotations).getNativeType();
return new jnr.ffi.provider.FromNativeType(declaredJavaClass, nativeType, annotations, converter, null);
}
static Method getDelegateMethod(Class closureClass) {
Method callMethod = null;
for (Method m : closureClass.getMethods()) {
if (m.isAnnotationPresent(Delegate.class) && Modifier.isPublic(m.getModifiers())
&& !Modifier.isStatic(m.getModifiers())) {
callMethod = m;
break;
}
}
if (callMethod == null) {
throw new NoSuchMethodError("no public non-static delegate method defined in " + closureClass.getName());
}
return callMethod;
}
}