content: /**
   * Copyright (c) 2016-2020, the Alpha Team.
   * All rights reserved.
   *
   * Additional changes made by Siemens.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * 1) Redistributions of source code must retain the above copyright notice, this
   *    list of conditions and the following disclaimer.
   *
   * 2) Redistributions in binary form must reproduce the above copyright notice,
   *    this list of conditions and the following disclaimer in the documentation
   *    and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  package at.ac.tuwien.kr.alpha.core.test.util;
  
  import at.ac.tuwien.kr.alpha.api.grounder.Substitution;
  import at.ac.tuwien.kr.alpha.api.programs.atoms.Atom;
  import at.ac.tuwien.kr.alpha.api.programs.literals.Literal;
  import at.ac.tuwien.kr.alpha.core.programs.rules.CompiledRule;
  
  public class SubstitutionTestUtil {
  
  	public static String groundAndPrintRule(CompiledRule rule, Substitution substitution) {
  		StringBuilder ret = new StringBuilder();
  		if (!rule.isConstraint()) {
  			Atom groundHead = rule.getHeadAtom().substitute(substitution);
  			ret.append(groundHead.toString());
  		}
  		ret.append(" :- ");
  		boolean isFirst = true;
  		for (Literal lit : rule.getBody()) {
  			ret.append(groundLiteralToString(lit, substitution, isFirst));
  			isFirst = false;
  		}
  		ret.append(".");
  		return ret.toString();
  	}
  
  	public static String groundLiteralToString(Literal literal, Substitution substitution, boolean isFirst) {
  		Literal groundLiteral = literal.substitute(substitution);
  		return (isFirst ? "" : ", ") + groundLiteral.toString();
  	}
  }
  