/**
* Returns a sequence that creates an object of type compatible the given class. Wraps the object
* in a list, and returns the list.
*
* <p>CURRENTLY, will return a sequence (i.e. a non-empty list) only if cls is an array.
*/
public static SimpleList<Sequence> createSequence(ComponentManager components, Class<?> cls) {
// Class<?> cls = statement.getInputTypes().get(i);
if (!cls.isArray()) {
return new ArrayListSimpleList<Sequence>();
}
Sequence s = null;
if (cls.getComponentType().isPrimitive()) {
s = randPrimitiveArray(cls.getComponentType());
} else {
SimpleList<Sequence> candidates =
components.getSequencesForType(cls.getComponentType(), false);
if (candidates.isEmpty()) {
if (GenInputsAbstract.forbid_null) {
// No sequences that produce appropriate component values found, and null forbidden.
// Return the empty array.
ArrayDeclaration decl = new ArrayDeclaration(cls.getComponentType(), 0);
s = new Sequence();
s = s.extend(decl);
} else {
// No sequences that produce appropriate component values found, and null allowed.
// TODO: We should also randomly return the empty array--it's a perfectly good case
// even if null is allowed.
// Return the array [ null ].
ArrayDeclaration decl = new ArrayDeclaration(cls.getComponentType(), 1);
s = new Sequence();
s = s.extend(PrimitiveOrStringOrNullDecl.nullOrZeroDecl(cls.getComponentType()));
List<Variable> ins = new ArrayList<Variable>();
ins.add(s.getVariable(0));
s = s.extend(decl, ins);
}
} else {
// Return the array [ x ] where x is the last value in the sequence.
ArrayDeclaration decl = new ArrayDeclaration(cls.getComponentType(), 1);
s = candidates.get(Randomness.nextRandomInt(candidates.size()));
List<Variable> ins = new ArrayList<Variable>();
// XXX IS THIS OLD COMMENT TRUE? : this assumes that last statement will have such a var,
// which I know is currently true because of SequenceCollection implementation.
ins.add(
s.randomVariableForTypeLastStatement(cls.getComponentType(), Match.COMPATIBLE_TYPE));
s = s.extend(decl, ins);
}
}
assert s != null;
ArrayListSimpleList<Sequence> l = new ArrayListSimpleList<Sequence>();
l.add(s);
return l;
}
