com.google.gwt.i18n.rebind.ConstantsMapMethodCreator Maven / Gradle / Ivy
/*
* 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.i18n.rebind;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.typeinfo.JMethod;
import com.google.gwt.i18n.rebind.AbstractResource.MissingResourceException;
import com.google.gwt.i18n.rebind.AbstractResource.ResourceList;
import com.google.gwt.i18n.shared.GwtLocale;
import com.google.gwt.user.rebind.AbstractGeneratorClassCreator;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Map.Entry;
/**
* Creator for methods of the form Map getX() .
*/
class ConstantsMapMethodCreator extends AbstractLocalizableMethodCreator {
static final String GENERIC_STRING_MAP_TYPE = "java.util.Map";
/**
* Constructor for localizable returnType method creator.
*
* @param classCreator
*/
public ConstantsMapMethodCreator(AbstractGeneratorClassCreator classCreator) {
super(classCreator);
}
/**
* Generates Map of key/value pairs for a list of keys.
*
* @param logger TreeLogger instance for logging
* @param method method body to create
* @param mapName name to create map from
* @param resourceList AbstractResource for key lookup
* @param locale locale to use for localized string lookup
*/
@Override
public void createMethodFor(TreeLogger logger, JMethod method,
String mapName, ResourceList resourceList, GwtLocale locale) {
String methodName = method.getName();
if (method.getParameters().length > 0) {
error(
logger,
methodName
+ " cannot have parameters; extend Messages instead if you need to create "
+ "parameterized messages");
}
// make sure cache exists
enableCache();
// check cache for array
println(GENERIC_STRING_MAP_TYPE + " args = (" + GENERIC_STRING_MAP_TYPE
+ ") cache.get(" + wrap(methodName) + ");");
// if not found create Map
println("if (args == null) {");
indent();
// Use a LinkedHashMap to preserve declaration order.
println("args = new java.util.LinkedHashMap();");
String keyString;
try {
keyString = resourceList.getRequiredString(mapName);
} catch (MissingResourceException e) {
e.setDuring("getting key list");
throw e;
}
String[] keys = ConstantsStringArrayMethodCreator.split(keyString);
ResourceList resources = getResources();
// Use a LinkedHashMap to preserve declaration order (but remove dups).
Map map = new LinkedHashMap();
for (String key : keys) {
if (key.length() == 0) {
continue;
}
try {
// check for "map[key]=value" first
String value = resources.getStringExt(mapName, key);
if (value == null) {
// for backwards compatibility, check for "key=value", which must be
// present if the form above isn't present.
value = resources.getRequiredString(key);
}
map.put(key, value);
} catch (MissingResourceException e) {
e.setDuring("implementing map");
throw e;
}
}
for (Entry entry : map.entrySet()) {
println("args.put(" + wrap(entry.getKey()) + ", " + wrap(entry.getValue()) + ");");
}
println("args = java.util.Collections.unmodifiableMap(args);");
println("cache.put(" + wrap(methodName) + ", args);");
outdent();
println("}");
println("return args;");
}
}