Examples of edu.mit.csail.sdg.alloy4.A4Reporter

edu.mit.csail.sdg.alloy4.ErrorFatal
This class receives diagnostic, progress, and warning messages from Alloy4. (This default implementation ignores all calls; you should subclass it to do the appropriate screen output)

    /** Returns a modifiable copy of the list of all i-th atom from all tuples in some arbitrary order (0 is first atom, 1 is second atom...)
     * @throws - ErrorAPI if this tupleset contains at least one tuple whose length is less than or equal to i
     */
    public List<SimAtom> getAllAtoms(int column) throws ErrorAPI {
        if (empty()) return new ArrayList<SimAtom>(0);
        if (column<0 || column>=arity()) throw new ErrorAPI("This tupleset does not have an \""+column+"th\" column.");
        IdentityHashMap<SimAtom,Boolean> ans = new IdentityHashMap<SimAtom,Boolean>();
        for(SimTuple x: this) ans.put(x.get(column), Boolean.TRUE);
        return new ArrayList<SimAtom>(ans.keySet());
    }

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        solver.options().setIntEncoding(Options.IntEncoding.TWOSCOMPLEMENT);
     }


    /** Construct a new A4Solution that is the continuation of the old one, but with the "next" instance. */
    private A4Solution(A4Solution old) throws Err {
        if (!old.solved) throw new ErrorAPI("This solution is not yet solved, so next() is not allowed.");
        if (old.kEnumerator==null) throw new ErrorAPI("This solution was not generated by an incremental SAT solver.\n" + "Solution enumeration is currently only implemented for MiniSat and SAT4J.");
        if (old.eval==null) throw new ErrorAPI("This solution is already unsatisfiable, so you cannot call next() to get the next solution.");
        Instance inst = old.kEnumerator.next().instance();
        unrolls = old.unrolls;
        originalOptions = old.originalOptions;
        originalCommand = old.originalCommand;
        bitwidth = old.bitwidth;

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       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);
       }
    }

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    /** If this solution is solved and satisfiable, evaluates the given expression and returns an A4TupleSet, a java Integer, or a java Boolean. */
    public Object eval(Expr expr) throws Err {
        try {
           if (expr instanceof Sig) return eval((Sig)expr);
           if (expr instanceof Field) return eval((Field)expr);
           if (!solved) throw new ErrorAPI("This solution is not yet solved, so eval() is not allowed.");
           if (eval==null) throw new ErrorAPI("This solution is unsatisfiable, so eval() is not allowed.");
           if (expr.ambiguous && !expr.errors.isEmpty()) expr = expr.resolve(expr.type(), null);
           if (!expr.errors.isEmpty()) throw expr.errors.pick();
           Object result = TranslateAlloyToKodkod.alloy2kodkod(this, expr);
           if (result instanceof IntExpression) return eval.evaluate((IntExpression)result);
           if (result instanceof Formula) return eval.evaluate((Formula)result);

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        }
    }


    /** Returns the Kodkod instance represented by this solution; throws an exception if the problem is not yet solved or if it is unsatisfiable. */
    public Instance debugExtractKInstance() throws Err {
        if (!solved) throw new ErrorAPI("This solution is not yet solved, so instance() is not allowed.");
        if (eval==null) throw new ErrorAPI("This solution is unsatisfiable, so instance() is not allowed.");
        return eval.instance().unmodifiableView();
    }

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        }
    };


    /** Converts an A4TupleSet into a SimTupleset object. */
    private static SimTupleset convert(Object object) throws Err {
        if (!(object instanceof A4TupleSet)) throw new ErrorFatal("Unexpected type error: expecting an A4TupleSet.");
        A4TupleSet s = (A4TupleSet)object;
        if (s.size()==0) return SimTupleset.EMPTY;
        List<SimTuple> list = new ArrayList<SimTuple>(s.size());
        int arity = s.arity();
        for(A4Tuple t: s) {

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     */
    public boolean cform(Expr x) throws Err {
        if (!x.errors.isEmpty()) throw x.errors.pick();
        Object y = visitThis(x);
        if (y instanceof Boolean) return Boolean.TRUE.equals(y);
        throw new ErrorFatal(x.span(), "This should have been a formula.\nInstead it is "+y);
    }

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     */
    public int cint(Expr x) throws Err {
        if (!x.errors.isEmpty()) throw x.errors.pick();
        Object y = visitThis(x);
        if (y instanceof Integer) return trunc((Integer)y);
        throw new ErrorFatal(x.span(), "This should have been an integer expression.\nInstead it is "+y);
    }

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     */
    public SimTupleset cset(Expr x) throws Err {
        if (!x.errors.isEmpty()) throw x.errors.pick();
        Object y = visitThis(x);
        if (y instanceof SimTupleset) return (SimTupleset)y;
        throw new ErrorFatal(x.span(), "This should have been a set or a relation.\nInstead it is "+y);
    }

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          case DIV:
              { int p=cint(x.left), q=cint(x.right), r=(p==0 ? 0 : (q==0 ? (p<0 ? 1 : -1) : (p/q))); return trunc(r); }
          case REM:
              { int p=cint(x.left), q=cint(x.right), r=(p==0 ? 0 : (q==0 ? (p<0 ? 1 : -1) : (p/q))); return trunc(p-r*q); }
        }
        throw new ErrorFatal(x.pos, "Unsupported operator ("+x.op+") encountered during ExprBinary.accept()");
    }

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edu.mit.csail.sdg.alloy4compiler.ast.CommandScope

edu.mit.csail.sdg.alloy4compiler.ast.Decl

edu.mit.csail.sdg.alloy4compiler.ast.Expr

edu.mit.csail.sdg.alloy4compiler.ast.ExprBadCall

edu.mit.csail.sdg.alloy4compiler.ast.ExprBadJoin

edu.mit.csail.sdg.alloy4compiler.ast.ExprBinary

edu.mit.csail.sdg.alloy4compiler.ast.ExprCall

edu.mit.csail.sdg.alloy4compiler.ast.ExprCall$DeduceType

edu.mit.csail.sdg.alloy4compiler.ast.ExprChoice

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