net.sandius.rembulan.impl.UnimplementedFunction Maven / Gradle / Ivy
/*
* Copyright 2016 Miroslav Janíček
*
* 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 net.sandius.rembulan.impl;
import net.sandius.rembulan.runtime.AbstractFunction0;
import net.sandius.rembulan.runtime.ExecutionContext;
import net.sandius.rembulan.runtime.ResolvedControlThrowable;
import net.sandius.rembulan.util.Check;
/**
* A function that throws an {@link UnsupportedOperationException} when invoked,
* for use as a placeholder for unimplemented functions.
*/
public final class UnimplementedFunction extends AbstractFunction0 {
private final String name;
/**
* Constructs a new instance of {@code UnimplementedFunction} with the given name
* for error reporting.
*
* @param name function name for error reporting, must not be {@code null}
*
* @throws IllegalArgumentException if {@code name} is {@code null}
*/
public UnimplementedFunction(String name) {
this.name = Check.notNull(name);
}
@Override
public void invoke(ExecutionContext context) throws ResolvedControlThrowable {
throw new UnsupportedOperationException("function not implemented: " + name);
}
@Override
public void resume(ExecutionContext context, Object suspendedState) throws ResolvedControlThrowable {
throw new NonsuspendableFunctionException(this.getClass());
}
}