net.sandius.rembulan.runtime.RuntimeCallInitialiser 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.runtime;
import net.sandius.rembulan.StateContext;
import net.sandius.rembulan.exec.CallInitialiser;
import net.sandius.rembulan.exec.Continuation;
import net.sandius.rembulan.impl.ReturnBuffers;
import java.util.Objects;
/**
* The default implementation of a call initialiser.
*
* This class serves as a bridge between call executors defined in the package
* {@link net.sandius.rembulan.exec} and the runtime implementation.
*/
public class RuntimeCallInitialiser implements CallInitialiser {
private final StateContext stateContext;
private final ReturnBufferFactory returnBufferFactory;
RuntimeCallInitialiser(StateContext stateContext, ReturnBufferFactory returnBufferFactory) {
this.stateContext = Objects.requireNonNull(stateContext);
this.returnBufferFactory = Objects.requireNonNull(returnBufferFactory);
}
/**
* Returns a new call initialiser for calls executed in the specified state
* context {@code stateContext} that use return buffers initialised by the specified
* factory {@code returnBufferFactory}.
*
* @param stateContext the state context, must not be {@code null}
* @param returnBufferFactory the return buffer factory, must not be {@code null}
* @return a new call initialiser for {@code stateContext}
*
* @throws NullPointerException if {@code stateContext} or {@code returnBufferFactory}
* is {@code null}
*/
public static RuntimeCallInitialiser forState(StateContext stateContext, ReturnBufferFactory returnBufferFactory) {
return new RuntimeCallInitialiser(stateContext, returnBufferFactory);
}
/**
* Returns a new call initialiser for calls executed in the specified state
* context {@code stateContext}, and using the default return buffer factory
* (see {@link ReturnBuffers#defaultFactory()}).
*
* @param stateContext the state context, must not be {@code null}
* @return a new call initialiser for {@code stateContext}
*
* @throws NullPointerException if {@code stateContext} is {@code null}
*/
public static RuntimeCallInitialiser forState(StateContext stateContext) {
return forState(stateContext, ReturnBuffers.defaultFactory());
}
@Override
public Continuation newCall(Object fn, Object... args) {
return Call.init(stateContext, returnBufferFactory, fn, args).getCurrentContinuation();
}
}