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- /*
- * Copyright 2000-2018 Vaadin Ltd.
- *
- * 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.vaadin.server.widgetsetutils.metadata;
-
- import java.util.Set;
-
- import com.google.gwt.core.ext.TreeLogger;
- import com.google.gwt.core.ext.TreeLogger.Type;
- import com.google.gwt.core.ext.UnableToCompleteException;
- import com.google.gwt.core.ext.typeinfo.JClassType;
- import com.google.gwt.core.ext.typeinfo.JMethod;
- import com.google.gwt.core.ext.typeinfo.JType;
- import com.vaadin.client.metadata.TypeDataStore.MethodAttribute;
- import com.vaadin.shared.annotations.NoLayout;
-
- public class ClientRpcVisitor extends TypeVisitor {
- @Override
- public void visitClientRpc(TreeLogger logger, JClassType type,
- ConnectorBundle bundle) throws UnableToCompleteException {
- checkGenericType(logger, type);
- Set<? extends JClassType> hierarchy = type
- .getFlattenedSupertypeHierarchy();
- for (JClassType subType : hierarchy) {
- JMethod[] methods = subType.getMethods();
- for (JMethod method : methods) {
- checkReturnType(logger, method);
-
- bundle.setNeedsInvoker(type, method);
- bundle.setNeedsParamTypes(type, method);
- if (method.getAnnotation(NoLayout.class) != null) {
- bundle.setMethodAttribute(type, method,
- MethodAttribute.NO_LAYOUT);
- }
-
- JType[] parameterTypes = method.getParameterTypes();
- for (JType paramType : parameterTypes) {
- bundle.setNeedsSerialize(paramType);
- }
- }
- }
- }
-
- public static void checkGenericType(TreeLogger logger, JClassType type)
- throws UnableToCompleteException {
- if (type.isGenericType() != null) {
- logger.log(Type.ERROR,
- "Type " + type.getParameterizedQualifiedSourceName()
- + "is parameterizied generic. RPC proxy "
- + "for parameterizied types is not supported.");
- throw new UnableToCompleteException();
- }
- }
-
- public static void checkReturnType(TreeLogger logger, JMethod method)
- throws UnableToCompleteException {
- if (!method.getReturnType().getQualifiedSourceName().equals("void")) {
- logger.log(Type.ERROR, "The method "
- + method.getEnclosingType().getQualifiedSourceName() + "."
- + method.getName() + " returns "
- + method.getReturnType().getQualifiedSourceName()
- + " but only void is supported for methods in RPC interfaces.");
- throw new UnableToCompleteException();
- }
- }
- }
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