/*
 * Copyright (c) 2017 Pantheon Technologies s.r.o. and others. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.yangtools.yang.parser.spi.meta;

import com.google.common.annotations.Beta;
import java.util.stream.Stream;
import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;

/**
 * Utility forwarding implementation of {@link StatementSupport} contract. This class is useful for implementing
 * wrapped statements.
 *
 * @author Robert Varga
 *
 * @param <A> Argument type
 * @param <D> Declared Statement representation
 * @param <E> Effective Statement representation
 */
@Beta
public abstract class ForwardingStatementSupport<A, D extends DeclaredStatement<A>, E extends EffectiveStatement<A, D>>
        extends StatementSupport<A, D, E> {
    private final StatementSupport<A, D, E> delegate;

    protected ForwardingStatementSupport(final StatementSupport<A, D, E> delegate) {
        super(delegate);
        this.delegate = delegate;
    }

    @Override
    public D createDeclared(final BoundStmtCtx<A> ctx, final Stream<DeclaredStatement<?>> substatements) {
        return delegate.createDeclared(ctx, substatements);
    }

    @Override
    public E createEffective(final Current<A, D> stmt,
            final Stream<? extends StmtContext<?, ?, ?>> declaredSubstatements,
            final Stream<? extends StmtContext<?, ?, ?>> inferredSubstatements) {
        return delegate.createEffective(stmt, declaredSubstatements, inferredSubstatements);
    }

    @Override
    public E copyEffective(final Current<A, D> stmt, final E original) {
        return delegate.copyEffective(stmt, original);
    }

    @Override
    public A parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
        return delegate.parseArgumentValue(ctx, value);
    }

    @Override
    public void onStatementAdded(final Mutable<A, D, E> stmt) {
        delegate.onStatementAdded(stmt);
    }

    @Override
    public void onPreLinkageDeclared(final Mutable<A, D, E> stmt) {
        delegate.onPreLinkageDeclared(stmt);
    }

    @Override
    public void onLinkageDeclared(final Mutable<A, D, E> stmt) {
        delegate.onLinkageDeclared(stmt);
    }

    @Override
    public void onStatementDefinitionDeclared(final Mutable<A, D, E> stmt) {
        delegate.onStatementDefinitionDeclared(stmt);
    }

    @Override
    public void onFullDefinitionDeclared(final Mutable<A, D, E> stmt) {
        delegate.onFullDefinitionDeclared(stmt);
    }

    @Override
    public boolean hasArgumentSpecificSupports() {
        return delegate.hasArgumentSpecificSupports();
    }

    @Override
    public StatementSupport<?, ?, ?> getSupportSpecificForArgument(final String argument) {
        return delegate.getSupportSpecificForArgument(argument);
    }

    @Override
    protected SubstatementValidator substatementValidator() {
        return delegate.substatementValidator();
    }

    @Override
    public String toString() {
        return delegate.toString();
    }
}