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• PredicateEnv.java

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com.googlecode.sarasvati.rubric.env.PredicateEnv Maven / Gradle / Ivy

/*
    This file is part of Sarasvati.

    Sarasvati is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
    published by the Free Software Foundation, either version 3 of the
    License, or (at your option) any later version.

    Sarasvati 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 Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with Sarasvati.  If not, see .

    Copyright 2009 Paul Lorenz
*/

package com.googlecode.sarasvati.rubric.env;

/**
 * A PredicateEnv does the actual evaluation of the predicates
 * that are used in a Rubric or JoinLang program.
 *
 * @author Paul Lorenz
 */
public interface PredicateEnv
{
  /**
   * Evaluates the named predicate
   *
   * @param predicate The name of the predicate to evaluate
   *
   * @return The result of the predicate evaluation.
   */
  boolean evalPredicate (String predicate);
}