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Diffstat (limited to 'utils/PDDLtoSANetTranslator/PDDLParser/src/pddl4j/exp/fcomp/GreaterComp.java')
| -rw-r--r-- | utils/PDDLtoSANetTranslator/PDDLParser/src/pddl4j/exp/fcomp/GreaterComp.java | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/utils/PDDLtoSANetTranslator/PDDLParser/src/pddl4j/exp/fcomp/GreaterComp.java b/utils/PDDLtoSANetTranslator/PDDLParser/src/pddl4j/exp/fcomp/GreaterComp.java new file mode 100644 index 00000000000..e92b2b84d7f --- /dev/null +++ b/utils/PDDLtoSANetTranslator/PDDLParser/src/pddl4j/exp/fcomp/GreaterComp.java @@ -0,0 +1,165 @@ +/* + * Copyright Dept. of Mathematics & Computer Science Univ. Paris-Descartes + * + * This software is governed by the CeCILL license under French law and + * abiding by the rules of distribution of free software. You can use, + * modify and/ or redistribute the software under the terms of the CeCILL + * license as circulated by CEA, CNRS and INRIA at the following URL + * "http://www.cecill.info". + * + * As a counterpart to the access to the source code and rights to copy, + * modify and redistribute granted by the license, users are provided only + * with a limited warranty and the software's author, the holder of the + * economic rights, and the successive licensors have only limited + * liability. + * + * In this respect, the user's attention is drawn to the risks associated + * with loading, using, modifying and/or developing or reproducing the + * software by the user in light of its specific status of free software, + * that may mean that it is complicated to manipulate, and that also + * therefore means that it is reserved for developers and experienced + * professionals having in-depth computer knowledge. Users are therefore + * encouraged to load and test the software's suitability as regards their + * requirements in conditions enabling the security of their systems and/or + * data to be ensured and, more generally, to use and operate it in the + * same conditions as regards security. + * + * The fact that you are presently reading this means that you have had + * knowledge of the CeCILL license and that you accept its terms. + */ + +package pddl4j.exp.fcomp; + +import java.util.LinkedHashMap; +import java.util.Map; + +import pddl4j.EvaluationException; +import pddl4j.exp.fexp.Number; +import pddl4j.exp.fexp.OpExp; +import pddl4j.exp.term.Substitution; +import pddl4j.exp.term.Term; +import pddl4j.exp.term.TermID; + +/** + * This class implements the greater compared function add of the pddl + * language. + * + * @author Damien Pellier + * @version 1.0 + */ +public class GreaterComp extends FCompExp { + + /** + * The serial version id of the class. + */ + private static final long serialVersionUID = -478025774168437367L; + + /** + * Creates a new greater compared function with two arguments. + * + * @param arg1 the first argument of the greater compared function. + * @param arg2 the second argument of the greater compared function. + * @throws NullPointerException if <code>arg1 == null</code> or + * <code>arg2 == null</code>. + */ + public GreaterComp(Term arg1, Term arg2) { + super(Comp.GREATER, arg1, arg2); + } + + /** + * Substitutes all occurrences of the variables that occur in this + * expression and that are mapped in the substitution by its binding + * term. + * + * @param sigma the substitution. + * @return a substituted copy of this expression. + * @throws NullPointerException if <code>sigma == null</code>. + */ + public GreaterComp apply(Substitution sigma) { + return (GreaterComp) super.apply(sigma); + } + + /** + * Standardizes all occurrences of the variables that occur in this + * expression. Remember that free variables are existentially quantified. + * + * @return a standardized copy of this expression. + */ + public GreaterComp standardize() { + return this.standardize(new LinkedHashMap<String, String>()); + } + + /** + * Standardizes all occurrences of the variables that occur in this + * expression. The map argument is used to store the variable already + * standardized. The bound argument is used to store the bound variables. a + * standardized copy of this expression. Remember that free variables are + * existentially quantified. + * + * @param images the object that maps old variable images to the standardize + * image. + * @return a standardized copy of this expression. + * @throws NullPointerException if + * <code>images == null || bound == null</code>. + */ + public GreaterComp standardize(Map<String, String> images) { + return (GreaterComp) super.standardize(images); + } + + /** + * Creates and returns a copy of this expression. + * + * @return a clone of this expression instance. + * @see pddl4j.exp.Exp#clone() + */ + public GreaterComp clone() { + return (GreaterComp) super.clone(); + } + + /** + * Returns <code>true</code> if this comparaison expression is evaluable. + * In the general case, an comparaison expression is evaluable if it is + * ground and its arguments are recursively either a number either a + * aritmetic function. In the case of the equality, a comparaison expression + * is also evaluable if the arguments of the expression are constant + * terms. + * + * @return <code>true</code> if this comparaison expression is evaluable; + * <code>false</code> otherwise. + */ + public boolean isEvaluable() { + return super.isEvaluable(); + } + + /** + * Evaluates this comparaison expression. + * + * @return the result of the evaluation. + * @throws EvaluationException if the comparaison expression is not ground or + * if an numeric error occurs during the evaluation of an + * numeric error. + * @see pddl4j.exp.fcomp.FCompExp#isEvaluable() + */ + public boolean evaluate() throws EvaluationException { + if (this.isEvaluable()) { + Number op1 = null; + if (this.getArg1().equals(TermID.ARITHMETIC_FUNCTION)) { + OpExp func = (OpExp) this.getArg1(); + op1 = func.evaluate(); + } else { + op1 = (Number) this.getArg1(); + } + Number op2 = null; + if (this.getArg2().equals(TermID.ARITHMETIC_FUNCTION)) { + OpExp func = (OpExp) this.getArg2(); + op2 = func.evaluate(); + } else { + op2 = (Number) this.getArg1(); + } + return op1.getValue() > op2.getValue(); + } else { + throw new EvaluationException("comparaison function " + + this.toString() + ": is not evaluable"); + } + } +} |