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Example 1 with ErrorType

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

the class CompModule method resolveSig.

/**
 * The given Sig will now point to a nonnull Sig.
 */
private static Sig resolveSig(CompModule res, Set<Object> topo, Sig oldS) throws Err {
    if (res.new2old.containsKey(oldS))
        return oldS;
    Sig realSig;
    final Pos pos = oldS.pos;
    final CompModule u = res.sig2module.get(oldS);
    final String name = base(oldS);
    final String fullname = (u.path.length() == 0) ? ("this/" + name) : (u.path + "/" + name);
    if (!topo.add(oldS))
        throw new ErrorType(pos, "Sig " + oldS + " is involved in a cyclic inheritance.");
    if (oldS instanceof SubsetSig) {
        List<Sig> parents = new ArrayList<Sig>();
        for (Sig n : ((SubsetSig) oldS).parents) {
            Sig parentAST = u.getRawSIG(n.pos, n.label);
            if (parentAST == null)
                throw new ErrorSyntax(n.pos, "The sig \"" + n.label + "\" cannot be found.");
            parents.add(resolveSig(res, topo, parentAST));
        }
        realSig = new SubsetSig(fullname, parents, oldS.attributes.toArray(new Attr[0]));
    } else {
        Sig sup = ((PrimSig) oldS).parent;
        Sig parentAST = u.getRawSIG(sup.pos, sup.label);
        if (parentAST == null)
            throw new ErrorSyntax(sup.pos, "The sig \"" + sup.label + "\" cannot be found.");
        Sig parent = resolveSig(res, topo, parentAST);
        if (!(parent instanceof PrimSig))
            throw new ErrorSyntax(sup.pos, "Cannot extend the subset signature \"" + parent + "\".\n" + "A signature can only extend a toplevel signature or a subsignature.");
        PrimSig p = (PrimSig) parent;
        realSig = new PrimSig(fullname, p, oldS.attributes.toArray(new Attr[0]));
    }
    res.new2old.put(realSig, oldS);
    res.sig2module.put(realSig, u);
    for (CompModule m : res.allModules) {
        for (Map.Entry<String, Sig> e : m.sigs.entrySet()) if (e.getValue() == oldS)
            e.setValue(realSig);
        for (Map.Entry<String, Sig> e : m.params.entrySet()) if (e.getValue() == oldS)
            e.setValue(realSig);
    }
    if (res.exactSigs.remove(oldS))
        res.exactSigs.add(realSig);
    return realSig;
}
Also used : PrimSig(edu.mit.csail.sdg.ast.Sig.PrimSig) Sig(edu.mit.csail.sdg.ast.Sig) SubsetSig(edu.mit.csail.sdg.ast.Sig.SubsetSig) SubsetSig(edu.mit.csail.sdg.ast.Sig.SubsetSig) ErrorSyntax(edu.mit.csail.sdg.alloy4.ErrorSyntax) ErrorType(edu.mit.csail.sdg.alloy4.ErrorType) Pos(edu.mit.csail.sdg.alloy4.Pos) ArrayList(java.util.ArrayList) Map(java.util.Map) HashMap(java.util.HashMap) LinkedHashMap(java.util.LinkedHashMap) PrimSig(edu.mit.csail.sdg.ast.Sig.PrimSig)

Example 2 with ErrorType

use of edu.mit.csail.sdg.alloy4.ErrorType 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();
}
Also used : ErrorAPI(edu.mit.csail.sdg.alloy4.ErrorAPI) ErrorType(edu.mit.csail.sdg.alloy4.ErrorType)

Example 3 with ErrorType

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

the class SimInstance method visit.

/**
 * {@inheritDoc}
 */
@Override
public Object visit(ExprCall x) throws Err {
    final Func f = x.fun;
    final int n = f.count();
    final Object candidate = n == 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.");
    for (Func ff : current_function) if (ff == f)
        throw new ErrorSyntax(x.span(), "" + f + " cannot call itself recursively!");
    Env<ExprVar, Object> newenv = new Env<ExprVar, Object>();
    List<SimTupleset> list = new ArrayList<SimTupleset>(x.args.size());
    for (int i = 0; i < n; i++) {
        SimTupleset ts = cset(x.args.get(i));
        newenv.put(f.get(i), ts);
        list.add(ts);
    }
    final SimCallback cb = callbacks.get(f);
    if (cb != null) {
        try {
            Object answer = cb.compute(f, list);
            if (answer != null) {
                if (x.args.size() == 0)
                    cacheForConstants.put(f, answer);
                return answer;
            }
        } catch (Exception ex) {
        // if the callback failed, we can just continue with our
        // original attempt to evaluate this call
        }
    }
    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 (f.count() == 0)
        cacheForConstants.put(f, ans);
    return ans;
}
Also used : ExprVar(edu.mit.csail.sdg.ast.ExprVar) Func(edu.mit.csail.sdg.ast.Func) ArrayList(java.util.ArrayList) Env(edu.mit.csail.sdg.alloy4.Env) IOException(java.io.IOException) ErrorSyntax(edu.mit.csail.sdg.alloy4.ErrorSyntax) Expr(edu.mit.csail.sdg.ast.Expr) ErrorType(edu.mit.csail.sdg.alloy4.ErrorType)

Example 4 with ErrorType

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

the class Type method toExpr.

/**
 * Convert this type into a UNION of PRODUCT of sigs.
 *
 * @throws ErrorType if it does not contain exactly one arity
 * @throws ErrorType if is_int is true
 * @throws ErrorType if is_bool is true
 */
public Expr toExpr() throws Err {
    int arity = arity();
    if (is_bool || arity < 1)
        throw new ErrorType("Cannot convert this type into a bounding expression.");
    Expr ans = null;
    for (ProductType pt : this) {
        Expr pro = null;
        for (int i = 0; i < arity; i++) if (pro == null)
            pro = pt.types[i];
        else
            pro = pro.product(pt.types[i]);
        if (ans == null)
            ans = pro;
        else
            ans = ans.plus(pro);
    }
    return ans;
}
Also used : ErrorType(edu.mit.csail.sdg.alloy4.ErrorType)

Example 5 with ErrorType

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

the class TranslateAlloyToKodkod method execute_commandFromBook.

/**
 * Based on the specified "options", execute one command and return the
 * resulting A4Solution object.
 * <p>
 * Note: it will first test whether the model fits one of the model from the
 * "Software Abstractions" book; if so, it will use the exact instance that was
 * in the book.
 *
 * @param rep - if nonnull, we'll send compilation diagnostic messages to it
 * @param sigs - the list of sigs; this list must be complete
 * @param cmd - the Command to execute
 * @param opt - the set of options guiding the execution of the command
 * @return null if the user chose "save to FILE" as the SAT solver, and nonnull
 *         if the solver finishes the entire solving and is either satisfiable
 *         or unsatisfiable.
 *         <p>
 *         If the return value X is satisfiable, you can call X.next() to get
 *         the next satisfying solution X2; and you can call X2.next() to get
 *         the next satisfying solution X3... until you get an unsatisfying
 *         solution.
 */
public static A4Solution execute_commandFromBook(A4Reporter rep, Iterable<Sig> sigs, Command cmd, A4Options opt) throws Err {
    if (rep == null)
        rep = A4Reporter.NOP;
    TranslateAlloyToKodkod tr = null;
    try {
        if (cmd.parent != null || !cmd.getGrowableSigs().isEmpty())
            return execute_greedyCommand(rep, sigs, cmd, opt);
        tr = new TranslateAlloyToKodkod(rep, opt, sigs, cmd);
        tr.makeFacts(cmd.formula);
        return tr.frame.solve(rep, cmd, new Simplifier(), true);
    } catch (UnsatisfiedLinkError ex) {
        throw new ErrorFatal("The required JNI library cannot be found: " + ex.toString().trim(), ex);
    } 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.");
    } catch (Throwable ex) {
        if (ex instanceof Err)
            throw (Err) ex;
        else
            throw new ErrorFatal("Unknown exception occurred: " + ex, ex);
    }
}
Also used : CapacityExceededException(kodkod.engine.CapacityExceededException) ErrorFatal(edu.mit.csail.sdg.alloy4.ErrorFatal) ErrorType(edu.mit.csail.sdg.alloy4.ErrorType) Err(edu.mit.csail.sdg.alloy4.Err) Pos(edu.mit.csail.sdg.alloy4.Pos) HigherOrderDeclException(kodkod.engine.fol2sat.HigherOrderDeclException)

Aggregations

ErrorType (edu.mit.csail.sdg.alloy4.ErrorType)18 Err (edu.mit.csail.sdg.alloy4.Err)6 ErrorSyntax (edu.mit.csail.sdg.alloy4.ErrorSyntax)6 Pos (edu.mit.csail.sdg.alloy4.Pos)5 ArrayList (java.util.ArrayList)5 TempList (edu.mit.csail.sdg.alloy4.ConstList.TempList)4 CapacityExceededException (kodkod.engine.CapacityExceededException)4 HigherOrderDeclException (kodkod.engine.fol2sat.HigherOrderDeclException)4 ErrorFatal (edu.mit.csail.sdg.alloy4.ErrorFatal)3 Expr (edu.mit.csail.sdg.ast.Expr)3 Sig (edu.mit.csail.sdg.ast.Sig)3 A4Reporter (edu.mit.csail.sdg.alloy4.A4Reporter)2 Env (edu.mit.csail.sdg.alloy4.Env)2 ErrorAPI (edu.mit.csail.sdg.alloy4.ErrorAPI)2 Command (edu.mit.csail.sdg.ast.Command)2 ExprVar (edu.mit.csail.sdg.ast.ExprVar)2 Func (edu.mit.csail.sdg.ast.Func)2 PrimSig (edu.mit.csail.sdg.ast.Sig.PrimSig)2 SubsetSig (edu.mit.csail.sdg.ast.Sig.SubsetSig)2 LinkedHashMap (java.util.LinkedHashMap)2