com.google.gwt.uibinder.rebind.messages.GenerateAnnotationWriter Maven / Gradle / Ivy
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/*
* Copyright 2008 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.uibinder.rebind.messages;
import com.google.gwt.uibinder.rebind.IndentedWriter;
import java.util.ArrayList;
import java.util.List;
/**
* Represents a {@literal @}Generate annotation in a Messages interface,
* and can write it out at code gen time.
*/
class GenerateAnnotationWriter {
private static String toArgsList(List strings) {
StringBuilder b = new StringBuilder();
boolean first = true;
for (String s : strings) {
if (first) {
first = false;
} else {
b.append(",\n ");
}
b.append(s);
}
return b.toString();
}
private static String toArrayLiteral(String[] strings) {
StringBuilder b = new StringBuilder("{");
for (String s : strings) {
b.append(String.format("\"%s\", ", s));
}
b.append('}');
return b.toString();
}
private final String[] formats;
private final String fileName;
private final String[] locales;
public GenerateAnnotationWriter(String[] formats, String fileName,
String[] locales) {
this.formats = formats;
this.fileName = fileName;
this.locales = locales;
}
public void write(IndentedWriter w) {
boolean hasFormats = formats.length > 0;
boolean hasFileName = fileName.length() > 0;
boolean hasLocales = locales.length > 0;
if (hasFormats || hasFileName || hasLocales) {
List args = new ArrayList();
if (hasFormats) {
args.add(String.format("format = %s", toArrayLiteral(formats)));
}
if (hasFileName) {
args.add(String.format("fileName = \"%s\"", fileName));
}
if (hasLocales) {
args.add(String.format("locales = %s", toArrayLiteral(locales)));
}
w.write("@Generate(");
w.indent();
w.write(toArgsList(args));
w.outdent();
w.write(")");
}
}
}