| /* |
| * Copyright 2010 Google Inc. |
| * |
| * 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.google.gwt.validation.rebind; |
| |
| import com.google.gwt.core.ext.Generator; |
| import com.google.gwt.core.ext.GeneratorContext; |
| import com.google.gwt.core.ext.TreeLogger; |
| import com.google.gwt.core.ext.UnableToCompleteException; |
| import com.google.gwt.core.ext.typeinfo.JClassType; |
| import com.google.gwt.core.ext.typeinfo.JParameterizedType; |
| import com.google.gwt.core.ext.typeinfo.TypeOracle; |
| import com.google.gwt.validation.client.impl.GwtSpecificValidator; |
| |
| /** |
| * <strong>EXPERIMENTAL</strong> and subject to change. Do not use this in |
| * production code. |
| * <p> |
| * Generates a {@link com.google.gwt.validation.client.GwtSpecificValidator}. |
| * <p> |
| * This class is thread safe. |
| */ |
| public class GwtSpecificValidatorGenerator extends Generator { |
| |
| @Override |
| public String generate(TreeLogger logger, GeneratorContext context, |
| String typeName) throws UnableToCompleteException { |
| JClassType validatorType = context.getTypeOracle().findType(typeName); |
| TypeOracle typeOracle = context.getTypeOracle(); |
| assert (typeOracle != null); |
| |
| JClassType validator = typeOracle.findType(typeName); |
| if (validator == null) { |
| logger.log(TreeLogger.ERROR, "Unable to find metadata for type '" |
| + typeName + "'", null); |
| throw new UnableToCompleteException(); |
| } |
| |
| JClassType gwtSpecificInterface = getGwtSpecificValidator(logger, validator); |
| JClassType beanType = getBeanType(logger, validator, gwtSpecificInterface); |
| |
| BeanHelper beanHelper = BeanHelper.createBeanHelper(beanType,logger,context); |
| |
| if (beanHelper == null) { |
| logger.log(TreeLogger.ERROR, "Unable to create BeanHelper for " + beanType |
| + " " + GwtSpecificValidator.class.getSimpleName() |
| + ".", null); |
| throw new UnableToCompleteException(); |
| } |
| |
| AbstractCreator creator = new GwtSpecificValidatorCreator(validatorType, |
| beanType, beanHelper, logger, context); |
| return creator.create(); |
| } |
| |
| private JClassType getBeanType(TreeLogger logger, JClassType validator, |
| JClassType gwtSpecificInterface) throws UnableToCompleteException { |
| if (gwtSpecificInterface instanceof JParameterizedType) { |
| JParameterizedType paramType = (JParameterizedType) gwtSpecificInterface; |
| return paramType.getTypeArgs()[0]; |
| } |
| logger.log(TreeLogger.ERROR, validator.getQualifiedSourceName() |
| + " must implement " + GwtSpecificValidator.class.getCanonicalName() |
| + " with a one generic parameter.", null); |
| throw new UnableToCompleteException(); |
| } |
| |
| private JClassType getGwtSpecificValidator(TreeLogger logger, |
| JClassType validator) throws UnableToCompleteException { |
| for (JClassType interfaceType : validator.getImplementedInterfaces()) { |
| if (interfaceType.getQualifiedSourceName().endsWith( |
| GwtSpecificValidator.class.getCanonicalName())) { |
| return interfaceType; |
| } |
| } |
| logger.log(TreeLogger.ERROR, validator.getQualifiedSourceName() |
| + " must implement " + GwtSpecificValidator.class.getCanonicalName(), |
| null); |
| throw new UnableToCompleteException(); |
| } |
| } |