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

Example 16 with ErrorType

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

the class TranslateAlloyToKodkod method execute_greedyCommand.

private static A4Solution execute_greedyCommand(A4Reporter rep, Iterable<Sig> sigs, Command usercommand, A4Options opt) throws Exception {
    // FIXTHIS: if the next command has a "smaller scope" than the last
    // command, we would get a Kodkod exception...
    // FIXTHIS: if the solver is "toCNF" or "toKodkod" then this method will
    // throw an Exception...
    // FIXTHIS: does solution enumeration still work when we're doing a
    // greedy solve?
    TranslateAlloyToKodkod tr = null;
    try {
        long start = System.currentTimeMillis();
        GreedySimulator sim = new GreedySimulator();
        sim.allSigs = sigs;
        sim.partial = null;
        A4Reporter rep2 = new A4Reporter(rep) {

            private boolean first = true;

            @Override
            public void translate(String solver, int bitwidth, int maxseq, int skolemDepth, int symmetry) {
                if (first)
                    super.translate(solver, bitwidth, maxseq, skolemDepth, symmetry);
                first = false;
            }

            @Override
            public void resultSAT(Object command, long solvingTime, Object solution) {
            }

            @Override
            public void resultUNSAT(Object command, long solvingTime, Object solution) {
            }
        };
        // Form the list of commands
        List<Command> commands = new ArrayList<Command>();
        while (usercommand != null) {
            commands.add(usercommand);
            usercommand = usercommand.parent;
        }
        // For each command...
        A4Solution sol = null;
        for (int i = commands.size() - 1; i >= 0; i--) {
            Command cmd = commands.get(i);
            sim.growableSigs = cmd.getGrowableSigs();
            while (cmd != null) {
                rep.debug(cmd.scope.toString());
                usercommand = cmd;
                tr = new TranslateAlloyToKodkod(rep2, opt, sigs, cmd);
                tr.makeFacts(cmd.formula);
                sim.totalOrderPredicates = tr.totalOrderPredicates;
                sol = tr.frame.solve(rep2, cmd, sim.partial == null || cmd.check ? new Simplifier() : sim, false);
                if (!sol.satisfiable() && !cmd.check) {
                    start = System.currentTimeMillis() - start;
                    if (sim.partial == null) {
                        rep.resultUNSAT(cmd, start, sol);
                        return sol;
                    } else {
                        rep.resultSAT(cmd, start, sim.partial);
                        return sim.partial;
                    }
                }
                if (sol.satisfiable() && cmd.check) {
                    start = System.currentTimeMillis() - start;
                    rep.resultSAT(cmd, start, sol);
                    return sol;
                }
                sim.partial = sol;
                if (sim.growableSigs.isEmpty())
                    break;
                for (Sig s : sim.growableSigs) {
                    CommandScope sc = cmd.getScope(s);
                    if (sc.increment > sc.endingScope - sc.startingScope) {
                        cmd = null;
                        break;
                    }
                    cmd = cmd.change(s, sc.isExact, sc.startingScope + sc.increment, sc.endingScope, sc.increment);
                }
            }
        }
        if (sol.satisfiable())
            rep.resultSAT(usercommand, System.currentTimeMillis() - start, sol);
        else
            rep.resultUNSAT(usercommand, System.currentTimeMillis() - start, sol);
        return sol;
    } catch (CapacityExceededException ex) {
        throw rethrow(ex);
    } catch (HigherOrderDeclException ex) {
        Pos p = tr != null ? tr.frame.kv2typepos(ex.decl().variable()).b : Pos.UNKNOWN;
        throw new ErrorType(p, "Analysis cannot be performed since it requires higher-order quantification that could not be skolemized.");
    }
}

Example 17 with ErrorType

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

the class TranslateAlloyToKodkod method alloy2kodkod.

/**
 * Translate the Alloy expression into an equivalent Kodkod Expression or
 * IntExpression or Formula object.
 *
 * @param sol - an existing satisfiable A4Solution object
 * @param expr - this is the Alloy expression we want to translate
 */
public static Object alloy2kodkod(A4Solution sol, Expr expr) throws Err {
    if (expr.ambiguous && !expr.errors.isEmpty())
        expr = expr.resolve(expr.type(), null);
    if (!expr.errors.isEmpty())
        throw expr.errors.pick();
    TranslateAlloyToKodkod tr = new TranslateAlloyToKodkod(sol.getBitwidth(), sol.unrolls(), sol.a2k(), sol.s2k());
    Object ans;
    try {
        ans = tr.visitThis(expr);
    } catch (UnsatisfiedLinkError ex) {
        throw new ErrorFatal("The required JNI library cannot be found: " + ex.toString().trim());
    } catch (CapacityExceededException ex) {
        throw rethrow(ex);
    } catch (HigherOrderDeclException ex) {
        throw new ErrorType("Analysis cannot be performed since it requires higher-order quantification that could not be skolemized.");
    } catch (Throwable ex) {
        if (ex instanceof Err)
            throw (Err) ex;
        throw new ErrorFatal("Unknown exception occurred: " + ex, ex);
    }
    if ((ans instanceof IntExpression) || (ans instanceof Formula) || (ans instanceof Expression))
        return ans;
    throw new ErrorFatal("Unknown internal error encountered in the evaluator.");
}

Example 18 with ErrorType

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

the class TranslateAlloyToKodkod method visit.

/**
 * {@inheritDoc}
 */
@Override
public Object visit(ExprCall x) throws Err {
    final Func f = x.fun;
    final Object candidate = f.count() == 0 ? cacheForConstants.get(f) : null;
    if (candidate != null)
        return candidate;
    final Expr body = f.getBody();
    if (body.type().arity() < 0 || body.type().arity() != f.returnDecl.type().arity())
        throw new ErrorType(body.span(), "Function return value not fully resolved.");
    final int n = f.count();
    int maxRecursion = unrolls;
    for (Func ff : current_function) if (ff == f) {
        if (maxRecursion < 0) {
            throw new ErrorSyntax(x.span(), "" + f + " cannot call itself recursively!");
        }
        if (maxRecursion == 0) {
            Type t = f.returnDecl.type();
            if (t.is_bool)
                return Formula.FALSE;
            if (t.is_int())
                return IntConstant.constant(0);
            int i = t.arity();
            Expression ans = Expression.NONE;
            while (i > 1) {
                ans = ans.product(Expression.NONE);
                i--;
            }
            return ans;
        }
        maxRecursion--;
    }
    Env<ExprVar, Object> newenv = new Env<ExprVar, Object>();
    for (int i = 0; i < n; i++) newenv.put(f.get(i), cset(x.args.get(i)));
    Env<ExprVar, Object> oldenv = env;
    env = newenv;
    current_function.add(f);
    Object ans = visitThis(body);
    env = oldenv;
    current_function.remove(current_function.size() - 1);
    if (ans instanceof Formula)
        k2pos((Formula) ans, x);
    if (f.count() == 0)
        cacheForConstants.put(f, ans);
    return ans;
}

Example 19 with ErrorType

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

the class ExprITE method make.

/**
 * Constructs a ExprITE expression.
 *
 * @param cond - the condition formula
 * @param left - the then-clause
 * @param right - the else-clause
 */
public static Expr make(Pos pos, Expr cond, Expr left, Expr right) {
    JoinableList<Err> errs = emptyListOfErrors;
    if (cond.mult != 0)
        errs = errs.make(new ErrorSyntax(cond.span(), "Multiplicity expression not allowed here."));
    if (left.mult != 0)
        errs = errs.make(new ErrorSyntax(left.span(), "Multiplicity expression not allowed here."));
    if (right.mult != 0)
        errs = errs.make(new ErrorSyntax(right.span(), "Multiplicity expression not allowed here."));
    Type c = EMPTY;
    while (left.errors.isEmpty() && right.errors.isEmpty()) {
        Type a = left.type, b = right.type;
        c = a.unionWithCommonArity(b);
        // if (a.is_int && b.is_int) c=Type.makeInt(c);
        if (a.is_bool && b.is_bool)
            c = Type.makeBool(c);
        if (c == EMPTY) {
            // [AM]
            // if (Type.SIGINT2INT) {
            // if (a.is_int && b.intersects(SIGINT.type)) {
            // right=right.cast2int(); continue; }
            // if (b.is_int && a.intersects(SIGINT.type)) {
            // left=left.cast2int(); continue; }
            // }
            // if (Type.INT2SIGINT) {
            // if (a.is_int && b.hasArity(1)) { left=left.cast2sigint();
            // continue; }
            // if (b.is_int && a.hasArity(1)) { right=right.cast2sigint();
            // continue; }
            // }
            errs = errs.make(new ErrorType(cond.span().merge(right.span()).merge(left.span()), "The then-clause and the else-clause must match.\nThe then-clause has type: " + a + "\nand the else-clause has type: " + b));
        }
        break;
    }
    cond = cond.typecheck_as_formula();
    return new ExprITE(pos, cond, left, right, c, errs.make(cond.errors).make(left.errors).make(right.errors));
}

Example 20 with ErrorType

use of edu.mit.csail.sdg.alloy4.ErrorType in project openflowplugin by opendaylight.

the class OnfExperimenterErrorFactory method deserialize.

@Override
public ErrorMessage deserialize(ByteBuf message) {
    ErrorMessageBuilder builder = new ErrorMessageBuilder();
    builder.setVersion((short) EncodeConstants.OF13_VERSION_ID);
    builder.setXid(message.readUnsignedInt());
    int type = message.readUnsignedShort();
    ErrorType errorType = ErrorType.forValue(type);
    if (errorType != null && errorType.equals(ErrorType.EXPERIMENTER)) {
        builder.setType(errorType.getIntValue());
        builder.setTypeString(errorType.getName());
    } else {
        LOG.warn("Deserializing other than {} error message with {}", ErrorType.EXPERIMENTER.getName(), this.getClass().getCanonicalName());
        builder.setType(type);
        builder.setTypeString(UNKNOWN_TYPE);
    }
    int code = message.readUnsignedShort();
    OnfExperimenterErrorCode errorCode = OnfExperimenterErrorCode.forValue(code);
    if (errorCode != null) {
        builder.setCode(errorCode.getIntValue());
        builder.setCodeString(errorCode.getName());
    } else {
        builder.setCode(code);
        builder.setCodeString(UNKNOWN_CODE);
    }
    builder.addAugmentation(ExperimenterIdError.class, new ExperimenterIdErrorBuilder().setExperimenter(new ExperimenterId(message.readUnsignedInt())).build());
    if (message.readableBytes() > 0) {
        byte[] data = new byte[message.readableBytes()];
        message.readBytes(data);
        builder.setData(data);
    }
    return builder.build();
}