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/*
 * 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.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.JPackage;
import com.google.gwt.user.rebind.AbstractSourceCreator;
import com.google.gwt.user.rebind.ClassSourceFileComposerFactory;
import com.google.gwt.user.rebind.SourceWriter;

import java.io.PrintWriter;

/**
 * Abstract Class for Creating source files.
 * 

* This class is not thread safe. */ public abstract class AbstractCreator extends AbstractSourceCreator { final GeneratorContext context; final TreeLogger logger; final JClassType validatorType; final BeanHelperCache cache; AbstractCreator(GeneratorContext context, TreeLogger logger, JClassType validatorType, BeanHelperCache cache) { this.context = context; this.logger = branch(logger, "Creating " + validatorType); this.validatorType = validatorType; this.cache = cache; } public final String create() throws UnableToCompleteException { SourceWriter sourceWriter = getSourceWriter(logger, context); if (sourceWriter != null) { writeClassBody(sourceWriter); sourceWriter.commit(logger); } return getQualifiedName(); } protected void addImports(ClassSourceFileComposerFactory composerFactory, Class... imports) { for (Class imp : imports) { composerFactory.addImport(imp.getCanonicalName()); } } protected abstract void compose(ClassSourceFileComposerFactory composerFactory); protected BeanHelper createBeanHelper(Class clazz) throws UnableToCompleteException { return cache.createHelper(clazz, logger, context); } protected BeanHelper createBeanHelper(JClassType jType) throws UnableToCompleteException { return cache.createHelper(jType, logger, context); } protected final String getPackage() { JPackage serviceIntfPkg = validatorType.getPackage(); return serviceIntfPkg == null ? "" : serviceIntfPkg.getName(); } protected String getSimpleName() { final int length = getPackage().length(); final String rawName = validatorType.getQualifiedSourceName().substring( length == 0 ? 0 : length + 1); return rawName.replace('.', '_') + "Impl"; } protected abstract void writeClassBody(SourceWriter sourceWriter) throws UnableToCompleteException; private String getQualifiedName() { String packageName = getPackage(); return (packageName == "" ? "" : packageName + ".") + getSimpleName(); } private SourceWriter getSourceWriter(TreeLogger logger, GeneratorContext ctx) { String packageName = getPackage(); String simpleName = getSimpleName(); PrintWriter printWriter = ctx.tryCreate(logger, packageName, simpleName); if (printWriter == null) { return null; } ClassSourceFileComposerFactory composerFactory = new ClassSourceFileComposerFactory( packageName, simpleName); compose(composerFactory); return composerFactory.createSourceWriter(ctx, printWriter); } }





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