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Diffstat (limited to 'utils/PDDLtoSANetTranslator/PDDLParser/src/pddl4j/exp/cond/UnaryCondExp.java')
| -rw-r--r-- | utils/PDDLtoSANetTranslator/PDDLParser/src/pddl4j/exp/cond/UnaryCondExp.java | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/utils/PDDLtoSANetTranslator/PDDLParser/src/pddl4j/exp/cond/UnaryCondExp.java b/utils/PDDLtoSANetTranslator/PDDLParser/src/pddl4j/exp/cond/UnaryCondExp.java new file mode 100644 index 00000000000..2a0f1be0338 --- /dev/null +++ b/utils/PDDLtoSANetTranslator/PDDLParser/src/pddl4j/exp/cond/UnaryCondExp.java @@ -0,0 +1,262 @@ +/* + * 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.cond; + +import java.util.LinkedHashMap; +import java.util.LinkedHashSet; +import java.util.Map; +import java.util.Set; + +import pddl4j.exp.Exp; +import pddl4j.exp.term.Substitution; +import pddl4j.exp.term.Term; +import pddl4j.exp.term.Variable; + +/** + * This class implements an unary conditional expression of the PDDL language. + * + * @author Damien Pellier + * @version 1.0 + */ +public abstract class UnaryCondExp extends CondExp { + + /** + * The goal description of the unary conditional expression. + */ + private Exp arg; + + /** + * Creates a new unary conditional expression with a specific expression. + * + * @param cond The condition of the unary conditional expression. + * @param arg the expression. + * @throws NullPointerException if <code>cond == null</code> or <code>arg == null</code>. + */ + public UnaryCondExp(Condition cond, Exp arg) { + super(cond); + if (arg == null) + throw new NullPointerException(); + this.arg = arg; + } + + /** + * Sets a new goal description to the unary conditional expression + * + * @param arg the new expression to set. + * @throws NullPointerException if <code>arg == null</code>. + */ + public final void setArg(Exp arg) { + if (arg == null) + throw new NullPointerException(); + this.arg = arg; + } + + /** + * Returns the expression of the unary conditional expression. + * + * @return the expression of the unary conditional expression. + */ + public final Exp getArg() { + return this.arg; + } + + /** + * Returns <code>true</code> if a term occurs in this binary conditional + * expression. + * + * @param term the term to be tested. + * @return <code>true</code> if a term occurs in this binary conditional + * expression; <code>false</code> otherwise. + * @throws NullPointerException if <code>term == null</code>. + */ + public final boolean occurs(Term term) { + if (term == null) + throw new NullPointerException(); + return this.arg.occurs(term); + } + + /** + * 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 UnaryCondExp apply(Substitution sigma) { + if (sigma == null) + throw new NullPointerException(); + UnaryCondExp other = this.clone(); + other.arg = this.arg.apply(sigma); + return other; + } + + /** + * 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 UnaryCondExp 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. 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</code>. + */ + public UnaryCondExp standardize(Map<String, String> images) { + if (images == null) + throw new NullPointerException(); + UnaryCondExp other = this.clone(); + other.arg = this.arg.standardize(images); + return other; + } + + /** + * Returns the set of free variables of this expression. + * + * @return the set of free variables of this expression. + */ + public Set<Variable> getFreeVariables() { + Set<Variable> vars = new LinkedHashSet<Variable>(); + vars.addAll(this.arg.getFreeVariables()); + return vars; + } + + /** + * Returns <code>true</code> if the expression is ground. + * + * @return <code>true</code> if the expression is ground; + * <code>false</code>otherwise. + * @see pddl4j.exp.Exp#isGround() + */ + public final boolean isGround() { + return this.arg.isGround(); + } + + /** + * Returns <code>true</code> if this unary conditional expression is + * equal to an other object, i.e., if the object is a not null reference to + * an instance of the class <code>UnaryConExp</code> and both + * conditional expressions have the same expression. + * + * @param obj the object to compare. + * @return <code>true</code> if this unary conditional expression is + * equal to an other object; <code>false</code> otherwise. + */ + public boolean equals(Object obj) { + if (obj != null && obj instanceof UnaryCondExp) { + UnaryCondExp other = (UnaryCondExp) obj; + return super.equals(obj) && this.arg.equals(other.arg); + } + return false; + } + + /** + * Returns the hash code value of this unary conditional expression. + * + * @return the hash code value of this unary conditional expression. + */ + public int hashCode() { + return super.hashCode() + this.arg.hashCode(); + } + + /** + * Creates and returns a copy of this expression. + * + * @return a clone of this expression instance. + * @see pddl4j.exp.Exp#clone() + */ + public UnaryCondExp clone() { + UnaryCondExp other = (UnaryCondExp) super.clone(); + other.arg = this.arg.clone(); + return other; + } + + /** + * Returns a copy of this expression such that the quantifiers appear first. + * + * @return a copy of this expression such that the quantifiers appear first. + * @see pddl4j.exp.Exp#moveQuantifierOutward() + */ + public UnaryCondExp moveQuantifierOutward() { + UnaryCondExp other = (UnaryCondExp) super.clone(); + other.arg = this.arg.moveQuantifierOutward(); + return other; + } + + /** + * Return the disjunctive normal form of this expression. Note, the + * expression returned is a copy. + * + * @return the disjunctive normal form of this expression. + * @see pddl4j.exp.Exp#toDisjunctiveNormalForm() + */ + public UnaryCondExp toDisjunctiveNormalForm() { + UnaryCondExp other = this.clone(); + other.arg = this.arg.toDisjunctiveNormalForm(); + return other; + } + + /** + * Returns the conjunctive normal form of this expression. Note, the + * expression returned is a copy. + * + * @return the conjunctive normal form of this expression. + * @see pddl4j.exp.Exp#toConjunctiveNormalForm() + */ + public UnaryCondExp toConjunctiveNormalForm() { + UnaryCondExp other = this.clone(); + other.arg = this.arg.toConjunctiveNormalForm(); + return other; + } + + /** + * Returns the negative normal form of this expression. Note, the expression + * returned is a copy. + * + * @return the negative normal form of this expression. + * @see pddl4j.exp.Exp#toNegativeNormalForm() + */ + public UnaryCondExp toNegativeNormalForm() { + UnaryCondExp other = this.clone(); + other.arg = this.arg.toNegativeNormalForm(); + return other; + } +}
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