/*
    * #%L
    * prolobjectlink-jpi
    * %%
    * Copyright (C) 2019 Prolobjectlink Project
    * %%
    * Permission is hereby granted, free of charge, to any person obtaining a copy
    * of this software and associated documentation files (the "Software"), to deal
    * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   * 
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   * 
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   * #L%
   */
  package io.github.prolobjectlink.prolog;
  
  /**
   * 
   * @author Jose Zalacain
   * @since 1.0
   */
  final class DefaultClauseBuilder extends AbstractBuilder implements PrologClauseBuilder {
  
  	DefaultClauseBuilder(PrologEngine engine) {
  		super(engine);
  	}
  
  	public PrologClauseBuilder begin(PrologTerm term) {
  		append(' ');
  		append(term);
  		return this;
  	}
  
  	public PrologClauseBuilder begin(String functor, PrologTerm... arguments) {
  		append(functor, arguments);
  		return this;
  	}
  
  	public PrologClauseBuilder neck(PrologTerm body) {
  		append(':');
  		append('-');
  		append(' ');
  		append(body);
  		return this;
  	}
  
  	public PrologClauseBuilder neck(String functor, PrologTerm... arguments) {
  		append(':');
  		append('-');
  		append(' ');
  		append(functor, arguments);
  		return this;
  	}
  
  	public PrologClauseBuilder neck(PrologTerm left, String operator, int right) {
  		append(':');
  		append('-');
  		append(' ');
  		append(left, operator, right);
  		return this;
  	}
  
  	public PrologClauseBuilder neck(PrologTerm left, String operator, PrologTerm right) {
  		append(':');
  		append('-');
  		append(' ');
  		append(left, operator, right);
  		return this;
  	}
  
  	public PrologClauseBuilder comma(PrologTerm body) {
  		append(',');
  		append(' ');
  		append(body);
  		return this;
  	}
  
  	public PrologClauseBuilder comma(String functor, PrologTerm... arguments) {
  		append(',');
  		append(' ');
  		append(functor, arguments);
  		return this;
  	}
  
  	public PrologClauseBuilder comma(PrologTerm left, String operator, PrologTerm right) {
  		append(',');
  		append(' ');
  		append(left, operator, right);
 		return this;
 	}
 
 	public String getClauseString() {
 		return "" + builder + "";
 	}
 
 	public boolean clause() {
 		String c = getClauseString();
 		builder = new StringBuilder();
 		return engine.clause(c);
 	}
 
 	public void asserta() {
 		String c = getClauseString();
 		builder = new StringBuilder();
 		engine.asserta(c);
 	}
 
 	public void assertz() {
 		String c = getClauseString();
 		builder = new StringBuilder();
 		engine.assertz(c);
 	}
 
 	public void retract() {
 		String c = getClauseString();
 		builder = new StringBuilder();
 		engine.retract(c);
 	}
 
 }