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• RubricExpr.java

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com.googlecode.sarasvati.rubric.lang.RubricExpr 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 2008 Paul Lorenz
*/

package com.googlecode.sarasvati.rubric.lang;

import com.googlecode.sarasvati.rubric.env.PredicateEnv;
import com.googlecode.sarasvati.rubric.visitor.RubricVisitor;

public interface RubricExpr
{
  boolean eval (PredicateEnv env);

  void traverse (RubricVisitor visitor);

  boolean isAnd ();

  boolean isOr ();

  boolean isNot ();

  boolean isSymbol ();

  RubricExprAnd asAnd ();

  RubricExprOr asOr ();

  RubricExprNot asNot ();

  RubricExprSymbol asSymbol ();

  boolean isEqualTo (RubricExpr expr);
}