Examples with Type com.google.spanner.v1.Type used on opensource projects

Example 81 with Type

use of com.google.spanner.v1.Type in project java-smt by sosy-lab.

the class CVC4FormulaCreator method convertValue.

@Override
public Object convertValue(Expr expForType, Expr value) {
    final Type type = expForType.getType();
    final Type valueType = value.getType();
    if (value.getKind() == Kind.BOUND_VARIABLE) {
        // CVC4 does not allow model values for bound vars
        return value.toString();
    } else if (valueType.isBoolean()) {
        return value.getConstBoolean();
    } else if (valueType.isInteger() && type.isInteger()) {
        return new BigInteger(value.getConstRational().toString());
    } else if (valueType.isReal() && type.isReal()) {
        Rational rat = value.getConstRational();
        return org.sosy_lab.common.rationals.Rational.of(new BigInteger(rat.getNumerator().toString()), new BigInteger(rat.getDenominator().toString()));
    } else if (valueType.isBitVector()) {
        Integer bv = value.getConstBitVector().getValue();
        if (bv.fitsSignedLong()) {
            return BigInteger.valueOf(bv.getUnsignedLong());
        } else {
            // default
            return value.toString();
        }
    } else if (valueType.isFloatingPoint()) {
        return parseFloatingPoint(value);
    } else if (valueType.isString()) {
        return value.getConstString().toString();
    } else {
        // String serialization for unknown terms.
        return value.toString();
    }
}

Example 82 with Type

use of com.google.spanner.v1.Type in project java-smt by sosy-lab.

the class CVC4FormulaCreator method makeBoundCopy.

/**
 * Makes a bound copy of a variable for use in quantifier. Note that all occurrences of the free
 * var have to be substituted by the bound once it exists.
 *
 * @param var Variable you want a bound copy of.
 * @return Bound Variable
 */
public Expr makeBoundCopy(Expr var) {
    Type type = var.getType();
    String name = getName(var);
    Expr boundCopy = exprManager.mkBoundVar(name, type);
    return boundCopy;
}

Example 83 with Type

use of com.google.spanner.v1.Type in project java-smt by sosy-lab.

the class CVC4ArrayFormulaManager method internalMakeArray.

@Override
@SuppressWarnings("MethodTypeParameterName")
protected <TI extends Formula, TE extends Formula> Expr internalMakeArray(String pName, FormulaType<TI> pIndexType, FormulaType<TE> pElementType) {
    final ArrayFormulaType<TI, TE> arrayFormulaType = FormulaType.getArrayType(pIndexType, pElementType);
    final Type cvc4ArrayType = toSolverType(arrayFormulaType);
    return getFormulaCreator().makeVariable(cvc4ArrayType, pName);
}

Example 84 with Type

use of com.google.spanner.v1.Type in project java-smt by sosy-lab.

the class CVC4FloatingPointFormulaManager method genericCast.

private Expr genericCast(Expr pNumber, FormulaType<?> pTargetType) {
    Type type = pNumber.getType();
    FormulaType<?> argType = getFormulaCreator().getFormulaType(pNumber);
    Expr castFuncDecl = getFormulaCreator().declareUFImpl("__cast_" + argType + "_to_" + pTargetType, toSolverType(pTargetType), ImmutableList.of(type));
    return exprManager.mkExpr(Kind.APPLY_UF, castFuncDecl, pNumber);
}

Example 85 with Type

use of com.google.spanner.v1.Type in project java-smt by sosy-lab.

the class CVC4FormulaCreator method visit.

@Override
public <R> R visit(FormulaVisitor<R> visitor, Formula formula, final Expr f) {
    checkState(!f.isNull());
    Type type = f.getType();
    if (f.isConst()) {
        if (type.isBoolean()) {
            return visitor.visitConstant(formula, f.getConstBoolean());
        } else if (type.isInteger() || type.isReal()) {
            return visitor.visitConstant(formula, f.getConstRational());
        } else if (type.isBitVector()) {
            // TODO is this correct?
            return visitor.visitConstant(formula, f.getConstBitVector().getValue());
        } else if (type.isFloatingPoint()) {
            // TODO is this correct?
            return visitor.visitConstant(formula, f.getConstFloatingPoint());
        } else if (type.isRoundingMode()) {
            // TODO is this correct?
            return visitor.visitConstant(formula, f.getConstRoundingMode());
        } else if (type.isString()) {
            return visitor.visitConstant(formula, f.getConstString());
        } else {
            throw new UnsupportedOperationException("Unhandled constant " + f + " with type " + type);
        }
    } else if (f.getKind() == Kind.BOUND_VARIABLE) {
        // BOUND vars are used for all vars that are bound to a quantifier in CVC4.
        // We resubstitute them back to the original free.
        // CVC4 doesn't give you the de-brujin index
        Expr originalVar = variablesCache.get(formula.toString());
        return visitor.visitBoundVariable(encapsulate(originalVar), 0);
    } else if (f.getKind() == Kind.FORALL || f.getKind() == Kind.EXISTS) {
        // QUANTIFIER: replace bound variable with free variable for visitation
        assert f.getNumChildren() == 2;
        Expr body = f.getChildren().get(1);
        List<Formula> freeVars = new ArrayList<>();
        for (Expr boundVar : f.getChild(0)) {
            // unpack grand-children of f.
            String name = getName(boundVar);
            Expr freeVar = Preconditions.checkNotNull(variablesCache.get(name));
            body = body.substitute(boundVar, freeVar);
            freeVars.add(encapsulate(freeVar));
        }
        BooleanFormula fBody = encapsulateBoolean(body);
        Quantifier quant = f.getKind() == Kind.EXISTS ? Quantifier.EXISTS : Quantifier.FORALL;
        return visitor.visitQuantifier((BooleanFormula) formula, quant, freeVars, fBody);
    } else if (f.isVariable()) {
        assert f.getKind() != Kind.BOUND_VARIABLE;
        return visitor.visitFreeVariable(formula, getName(f));
    } else {
        // Expressions like uninterpreted function calls (Kind.APPLY_UF) or operators (e.g. Kind.AND).
        // These are all treated like operators, so we can get the declaration by f.getOperator()!
        List<Formula> args = ImmutableList.copyOf(Iterables.transform(f, this::encapsulate));
        List<FormulaType<?>> argsTypes = new ArrayList<>();
        Expr operator = normalize(f.getOperator());
        if (operator.getType().isFunction()) {
            vectorType argTypes = new FunctionType(operator.getType()).getArgTypes();
            for (int i = 0; i < argTypes.size(); i++) {
                argsTypes.add(getFormulaTypeFromTermType(argTypes.get(i)));
            }
        } else {
            for (Expr arg : f) {
                argsTypes.add(getFormulaType(arg));
            }
        }
        checkState(args.size() == argsTypes.size());
        // additional parameters? We do so for some methods of Princess.
        return visitor.visitFunction(formula, args, FunctionDeclarationImpl.of(getName(f), getDeclarationKind(f), argsTypes, getFormulaType(f), operator));
    }
}