Example #1
0
 /**
  * @param fieldTypes as inferred for the whole relation.
  * @return The tuple value for this record
  */
 ITuple getTuple(Type fieldTypes) {
   IValue fieldValues[] = new IValue[rfields.size()];
   for (int i = 0; i < rfields.size(); i++) {
     if (rfields.get(i) == null) {
       if (fieldTypes.getFieldType(i).isBool()) rfields.set(i, values.bool(false));
       else if (fieldTypes.getFieldType(i).isInteger()) rfields.set(i, values.integer(0));
       else if (fieldTypes.getFieldType(i).isReal()) rfields.set(i, values.real(0));
       else rfields.set(i, values.string(""));
     }
     if (fieldTypes.getFieldType(i).isString() && !rfields.get(i).getType().isString())
       rfields.set(i, values.string(rfields.get(i).toString()));
     fieldValues[i] = rfields.get(i);
   }
   return values.tuple(fieldValues);
 }
Example #2
0
 @Override
 protected <U extends IValue> Result<U> joinRelation(RelationResult that) {
   // Note the reverse of arguments, we need "that join this"
   int arity1 = that.getValue().arity();
   Type eltType = getType().getElementType();
   Type tupleType = that.getType().getElementType();
   Type fieldTypes[] = new Type[arity1 + 1];
   for (int i = 0; i < arity1; i++) {
     fieldTypes[i] = tupleType.getFieldType(i);
   }
   fieldTypes[arity1] = eltType;
   Type resultTupleType = getTypeFactory().tupleType(fieldTypes);
   ISetWriter writer = getValueFactory().setWriter(resultTupleType);
   IValue fieldValues[] = new IValue[arity1 + 1];
   for (IValue relValue : that.getValue()) {
     for (IValue setValue : this.getValue()) {
       for (int i = 0; i < arity1; i++) {
         fieldValues[i] = ((ITuple) relValue).get(i);
       }
       fieldValues[arity1] = setValue;
       writer.insert(getValueFactory().tuple(fieldValues));
     }
   }
   Type resultType = getTypeFactory().relTypeFromTuple(resultTupleType);
   return makeResult(resultType, writer.done(), ctx);
 }
Example #3
0
  @Override
  protected <U extends IValue> Result<U> addTuple(TupleResult that) {
    // Note reversed args
    TupleResult left = that;
    TupleResult right = this;
    Type leftType = left.getType();
    Type rightType = right.getType();

    int leftArity = leftType.getArity();
    int rightArity = rightType.getArity();
    int newArity = leftArity + rightArity;

    Type fieldTypes[] = new Type[newArity];
    String fieldNames[] = new String[newArity];
    IValue fieldValues[] = new IValue[newArity];

    boolean consistentLabels = true;
    for (int i = 0; i < leftArity; i++) {
      fieldTypes[i] = leftType.getFieldType(i);
      fieldNames[i] = leftType.getFieldName(i);
      fieldValues[i] = left.getValue().get(i);
      consistentLabels = fieldNames[i] != null;
    }

    for (int i = 0; i < rightArity; i++) {
      fieldTypes[leftArity + i] = rightType.getFieldType(i);
      fieldNames[leftArity + i] = rightType.getFieldName(i);
      fieldValues[leftArity + i] = right.getValue().get(i);
      consistentLabels = fieldNames[i] != null;
      if (consistentLabels) {
        for (int j = 0; j < leftArity; j++) {
          if (fieldNames[j].equals(fieldNames[i])) {
            // duplicate field name, so degenerate to unlabeled tuple
            consistentLabels = false;
          }
        }
      }
    }

    Type newTupleType;
    if (consistentLabels) {
      newTupleType = getTypeFactory().tupleType(fieldTypes, fieldNames);
    } else {
      newTupleType = getTypeFactory().tupleType(fieldTypes);
    }
    return makeResult(newTupleType, getValueFactory().tuple(fieldValues), ctx);
  }
  public void testIntersectISet() {
    ISet empty1 = vf.set(tf.tupleType(tf.integerType()));
    ISet empty2 = vf.set(tf.tupleType(tf.realType()));

    try {
      final ISet intersection = empty1.intersect(empty2);
      if (!intersection.isEmpty()) {
        fail("empty intersection failed");
      }

      Type type = intersection.getType();
      if (!type.getFieldType(0).isSubtypeOf(tf.numberType())) {
        fail("intersection should produce lub types");
      }
    } catch (FactTypeUseException e) {
      fail("intersecting types which have a lub should be possible");
    }

    try {
      if (!integerRelation.intersect(doubleRelation).isEmpty()) {
        fail("non-intersecting relations should produce empty intersections");
      }

      ISet oneTwoThree = vf.set(integerTuples[0], integerTuples[1], integerTuples[2]);
      ISet threeFourFive = vf.set(integerTuples[2], integerTuples[3], integerTuples[4]);
      ISet result = vf.set(integerTuples[2]);

      if (!oneTwoThree.intersect(threeFourFive).isEqual(result)) {
        fail("intersection failed");
      }
      if (!threeFourFive.intersect(oneTwoThree).isEqual(result)) {
        fail("intersection should be commutative");
      }

      if (!oneTwoThree
          .intersect(vf.set(tf.tupleType(tf.integerType(), tf.integerType())))
          .isEmpty()) {
        fail("intersection with empty set should produce empty");
      }

    } catch (FactTypeUseException e) {
      fail("the above should all be type safe");
    }
  }
 /* (non-Javadoc)
  * @see org.rascalmpl.tasks.ITaskRegistry#registerProducer(org.rascalmpl.tasks.ITask)
  */
 @Override
 public void registerProducer(ITask<Type, IValue, IValue> producer) {
   lock.lock();
   try {
     for (Type key : producer.getKeys()) {
       if (key.isTuple()) {
         Type key1 = key.getFieldType(0);
         Type key2 = key.getFieldType(1);
         Map<Type, ITask<Type, IValue, IValue>> map = keyedProducers.get(key1);
         if (map == null) map = new HashMap<Type, ITask<Type, IValue, IValue>>();
         map.put(key2, producer);
         keyedProducers.put(key1, map);
       } else {
         producers.put(key, producer);
       }
     }
   } finally {
     lock.unlock();
   }
 }
 /* (non-Javadoc)
  * @see org.rascalmpl.tasks.ITaskRegistry#unregisterProducer(org.rascalmpl.tasks.ITask)
  */
 @Override
 public void unregisterProducer(ITask<Type, IValue, IValue> producer) {
   lock.lock();
   try {
     for (Type key : producer.getKeys()) {
       if (key.isTuple()) {
         Type key1 = key.getFieldType(0);
         Map<Type, ITask<Type, IValue, IValue>> map = keyedProducers.get(key1);
         if (map != null) {
           for (Map.Entry<Type, ITask<Type, IValue, IValue>> entry : map.entrySet()) {
             if (entry.getValue().equals(producer)) map.remove(entry.getKey());
           }
           if (map.isEmpty()) keyedProducers.remove(key1);
           else keyedProducers.put(key1, map);
         }
       } else {
         if (producers.get(key) == producer) producers.remove(key);
       }
     }
   } finally {
     lock.unlock();
   }
 }