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/**
 * This file is part of Graylog.
 *
 * Graylog is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Graylog is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Graylog.  If not, see .
 */
package org.graylog.plugins.pipelineprocessor.ast.functions;

import org.graylog.plugins.pipelineprocessor.EvaluationContext;
import org.graylog.plugins.pipelineprocessor.ast.expressions.Expression;

/**
 * Helper Function implementation which evaluates and memoizes all constant FunctionArgs.
 *
 * @param  the return type
 */
public abstract class AbstractFunction implements Function {

    @Override
    public Object preComputeConstantArgument(FunctionArgs args, String name, Expression arg) {
        return arg.evaluateUnsafe(EvaluationContext.emptyContext());
    }
}