/*
* Copyright 2007 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.libideas.resources.rg;
import com.google.gwt.core.ext.Generator;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JMethod;
import com.google.gwt.dev.util.Util;
import com.google.gwt.libideas.resources.client.TextResource;
import com.google.gwt.libideas.resources.rebind.ResourceContext;
import com.google.gwt.libideas.resources.rebind.ResourceGenerator;
import com.google.gwt.libideas.resources.rebind.ResourceGeneratorUtil;
import com.google.gwt.user.rebind.SourceWriter;
import java.net.URL;
/**
* Provides implementations of TextResource.
*
*/
public final class TextResourceGenerator extends ResourceGenerator {
ResourceContext context;
@Override
public void init(TreeLogger logger, ResourceContext context) {
this.context = context;
}
@Override
public void writeAssignment(TreeLogger logger, JMethod method)
throws UnableToCompleteException {
URL[] resources =
ResourceGeneratorUtil.findResources(logger, context, method);
if (resources.length != 1) {
logger.log(TreeLogger.ERROR, "Exactly one "
+ ResourceGeneratorUtil.METADATA_TAG + " must be specified", null);
throw new UnableToCompleteException();
}
URL resource = resources[0];
SourceWriter sw = context.getSourceWriter();
// Write the expression to create the subtype.
sw.println("new " + TextResource.class.getName() + "() {");
sw.indent();
// Convenience when examining the generated code.
sw.println("// " + resource.toExternalForm());
sw.println("public String getText() {");
sw.indent();
TreeLogger transformLogger =
logger.branch(TreeLogger.DEBUG, "Applying Transformers", null);
String toWrite =
ResourceGeneratorUtil.applyTransformations(transformLogger, method,
String.class, new String(Util.readURLAsChars(resource)));
sw.println("return \"" + Generator.escape(toWrite).replaceAll("\0", "\\0")
+ "\";");
sw.outdent();
sw.println("}");
sw.println("public String getName() {");
sw.indent();
sw.println("return \"" + method.getName() + "\";");
sw.outdent();
sw.println("}");
sw.outdent();
sw.println("}");
}
}