Examples with ErrorAPI edu.mit.csail.sdg.alloy4.ErrorAPI used on opensource projects

Example 1 with ErrorAPI

use of edu.mit.csail.sdg.alloy4.ErrorAPI in project org.alloytools.alloy by AlloyTools.

the class SimInstance method makeAtom.

/**
 * Create a fresh atom for the given sig, then return the newly created atom.
 *
 * @throws ErrorAPI if attempting to add an atom to an abstract sig with
 *             children, or a builtin sig, or a subset sig.
 */
public SimAtom makeAtom(Sig sig) throws Err {
    if (sig.builtin)
        throw new ErrorAPI("Cannot add an atom to a builtin sig.");
    if (!(sig instanceof PrimSig))
        throw new ErrorAPI("Cannot add an atom to a subset sig.");
    PrimSig s = (PrimSig) sig;
    if (s.isAbstract != null && !s.children().isEmpty())
        throw new ErrorAPI("Cannot add an atom to an abstract parent sig.");
    String label = sig.label + "$";
    if (label.startsWith("this/"))
        label = label.substring(5);
    for (int i = 0; ; i++) {
        SimAtom atom = SimAtom.make(label + i);
        if (hasAtom(atom))
            continue;
        SimTupleset add = SimTupleset.make(SimTuple.make(atom));
        if (cacheUNIV != null)
            cacheUNIV = cacheUNIV.union(add);
        for (; s != null; s = s.parent) if (!s.builtin) {
            SimTupleset old = sfs.get(s);
            if (old == null || old.empty())
                sfs.put(s, add);
            else if (!add.in(old))
                sfs.put(s, old.union(add));
            else
                break;
        }
        return atom;
    }
}

Example 2 with ErrorAPI

use of edu.mit.csail.sdg.alloy4.ErrorAPI in project org.alloytools.alloy by AlloyTools.

the class SimInstance method init.

/**
 * Initializes the given sig to be associated with the given unary value; should
 * only be called at the beginning.
 * <p>
 * The resulting instance may or may not satisfy all facts, and should be
 * checked for consistency.
 */
public void init(Sig sig, SimTupleset value) throws Err {
    if (value == null) {
        sfs.remove(sig);
        return;
    }
    if (value.arity() > 1)
        throw new ErrorType("Evaluator encountered an error: sig " + sig.label + " arity must not be " + value.arity());
    if (sig.builtin)
        throw new ErrorAPI("Evaluator cannot prebind the builtin sig \"" + sig.label + "\"");
    sfs.put(sig, value);
    cacheUNIV = null;
    cacheSTRING = null;
    cacheForConstants.clear();
}

Example 3 with ErrorAPI

use of edu.mit.csail.sdg.alloy4.ErrorAPI in project org.alloytools.alloy by AlloyTools.

the class A4Solution method shrink.

/**
 * Shrink the bounds for the given relation; throws an exception if the new
 * bounds is not sameAs/subsetOf the old bounds.
 */
void shrink(Relation relation, TupleSet lowerBound, TupleSet upperBound) throws Err {
    if (solved)
        throw new ErrorFatal("Cannot shrink a Kodkod relation since solve() has completed.");
    TupleSet oldL = bounds.lowerBound(relation);
    TupleSet oldU = bounds.upperBound(relation);
    if (oldU.containsAll(upperBound) && upperBound.containsAll(lowerBound) && lowerBound.containsAll(oldL)) {
        bounds.bound(relation, lowerBound, upperBound);
    } else {
        throw new ErrorAPI("Inconsistent bounds shrinking on relation: " + relation);
    }
}

Example 4 with ErrorAPI

use of edu.mit.csail.sdg.alloy4.ErrorAPI in project org.alloytools.alloy by AlloyTools.

the class A4SolutionWriter method writeInstance.

/**
 * If this solution is a satisfiable solution, this method will write it out in
 * XML format.
 */
static void writeInstance(A4Reporter rep, A4Solution sol, PrintWriter out, Iterable<Func> extraSkolems, Map<String, String> sources) throws Err {
    if (!sol.satisfiable())
        throw new ErrorAPI("This solution is unsatisfiable.");
    try {
        Util.encodeXMLs(out, "<alloy builddate=\"", Version.buildDate(), "\">\n\n");
        new A4SolutionWriter(rep, sol, sol.getAllReachableSigs(), sol.getBitwidth(), sol.getMaxSeq(), sol.getOriginalCommand(), sol.getOriginalFilename(), out, extraSkolems);
        if (sources != null)
            for (Map.Entry<String, String> e : sources.entrySet()) {
                Util.encodeXMLs(out, "\n<source filename=\"", e.getKey(), "\" content=\"", e.getValue(), "\"/>\n");
            }
        out.print("\n</alloy>\n");
    } catch (Throwable ex) {
        if (ex instanceof Err)
            throw (Err) ex;
        else
            throw new ErrorFatal("Error writing the solution XML file.", ex);
    }
    if (out.checkError())
        throw new ErrorFatal("Error writing the solution XML file.");
}

Example 5 with ErrorAPI

use of edu.mit.csail.sdg.alloy4.ErrorAPI in project org.alloytools.alloy by AlloyTools.

the class A4TupleSet method plus.

/**
 * Construct a new tupleset as the union of this and that; this and that must be
 * come from the same solution. Note: if that==null, then the method returns
 * this A4TupleSet as-is.
 */
public A4TupleSet plus(A4TupleSet that) throws ErrorAPI {
    if (that == null)
        return this;
    if (sol != that.sol)
        throw new ErrorAPI("A4TupleSet.plus() requires 2 tuplesets from the same A4Solution.");
    if (arity() != that.arity())
        throw new ErrorAPI("A4TupleSet.plus() requires 2 tuplesets with the same arity.");
    if (this == that || tuples.size() == 0)
        return that;
    else if (that.tuples.size() == 0)
        // special short cut
        return this;
    TupleSet ts = tuples.clone();
    ts.addAll(that.tuples);
    if (tuples.size() == ts.size())
        return this;
    if (that.tuples.size() == ts.size())
        return that;
    return new A4TupleSet(ts, sol);
}