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ExplicitSetSpec.java
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/* * Copyright (c) 2005, Regents of the University of California * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * 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. * * * Neither the name of the University of California, Berkeley nor * the names of its contributors may be used to endorse or promote * products derived from this software without specific prior * written permission. * * 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 OWNER 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 blog; import java.util.*; import common.Multiset; import common.HashMultiset;
| Represents an argument - set with explicit listing of its elements. The elements are assumed to be Terms. |
public class ExplicitSetSpec extends ArgSpec{
Creates a new explicit set specification.
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public ExplicitSetSpec(List terms) {
this.terms = new ArrayList( terms );
}
public List getElts( ){
return Collections.unmodifiableList(terms);
}
public Object evaluate(EvalContext context) {
Multiset values = new HashMultiset();
for (Iterator iter = terms.iterator(); iter.hasNext(); ) {
Term term = (Term) iter.next();
Object termValue = term.evaluate(context);
if (termValue == null) {
return null;
}
values.add(termValue);
}
return new DefaultObjectSet(values);
}
public boolean containsRandomSymbol() {
for (Iterator iter = terms.iterator(); iter.hasNext(); ) {
if (((Term) iter.next()).containsRandomSymbol()) {
return true;
}
}
return false;
}
public boolean checkTypesAndScope(Model model, Map scope) {
boolean correct = true;
for (int i = 0; i < terms.size(); ++i) {
Term termInScope
= ((Term) terms.get(i)).getTermInScope(model, scope);
if (termInScope == null) {
correct = false;
} else {
terms.set(i, termInScope);
}
}
return correct;
}
public Collection getSubExprs() {
return Collections.unmodifiableList(terms);
}
public ArgSpec getSubstResult(Substitution subst,
Set<LogicalVar> boundVars) {
List<Term> newTerms = new ArrayList<Term>(terms.size());
for (Iterator iter = terms.iterator(); iter.hasNext(); ) {
Term term = (Term) iter.next();
newTerms.add((Term) term.getSubstResult(subst, boundVars));
}
return new ExplicitSetSpec(newTerms);
}
| Two explicit set specifications are equal if they have the same list of terms (in the same order). Explicit set specifications with the same terms in different orders are equivalent, but we do not consider them equal, just as we do not consider the conjunctive formula (alpha & beta) equal to (beta & alpha). |
public boolean equals(Object o) {
if (o instanceof ExplicitSetSpec) {
ExplicitSetSpec other = (ExplicitSetSpec) o;
return terms.equals(other.getElts());
}
return false;
}
public int hashCode() {
return terms.hashCode();
}
| Returns a string of the form {t1, ..., tK} where t1, ..., tK are the terms in this explicit set specification. |
public String toString() {
StringBuffer buf = new StringBuffer();
buf.append("{");
if (!terms.isEmpty()) {
buf.append(terms.get(0));
for (int i = 1; i < terms.size(); ++i) {
buf.append(", ");
buf.append(terms.get(i));
}
}
buf.append("}");
return buf.toString();
}
// use List rather than Set for terms so we can print the terms in the
// same order the user listed them
private List terms;
}
This file was generated on Tue Jun 08 17:53:36 PDT 2010 from file ExplicitSetSpec.java
by the ilog.language.tools.Hilite Java tool written by Hassan Aït-Kaci