/*
* 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.jsio.rebind;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JPrimitiveType;
import com.google.gwt.core.ext.typeinfo.JType;
import com.google.gwt.core.ext.typeinfo.TypeOracle;
/**
* This doesn't add support for Longs and longs, but provides an explanation as
* to why they aren't supported.
*/
public class LongFragmentGenerator extends FragmentGenerator {
@Override
boolean accepts(TypeOracle oracle, JType type) {
return type.isPrimitive() == JPrimitiveType.LONG
|| (type.isClass() != null && isAssignable(oracle, type.isClass(),
Long.class));
}
@Override
void fromJS(FragmentGeneratorContext context)
throws UnableToCompleteException {
logError(context.parentLogger);
}
@Override
void toJS(FragmentGeneratorContext context) throws UnableToCompleteException {
logError(context.parentLogger);
}
@Override
void writeExtractorJSNIReference(FragmentGeneratorContext context)
throws UnableToCompleteException {
logError(context.parentLogger);
}
private void logError(TreeLogger logger) throws UnableToCompleteException {
logger.branch(TreeLogger.ERROR,
"Primitive longs and boxed Long types are not supported because they "
+ "cannot be represented in JavaScript without loss of precision. "
+ "Use a double or int instead.", null);
throw new UnableToCompleteException();
}
}