private static Result<IValue> callWith(
List<AbstractFunction> candidates,
Type[] argTypes,
IValue[] argValues,
Map<String, IValue> keyArgValues,
boolean mustSucceed) {
AbstractFunction failed = null;
Failure failure = null;
for (AbstractFunction candidate : candidates) {
if ((candidate.hasVarArgs() && argValues.length >= candidate.getArity() - 1)
|| candidate.getArity() == argValues.length
|| candidate.hasKeywordArguments()) {
try {
return candidate.call(argTypes, argValues, keyArgValues);
} catch (MatchFailed m) {
// could happen if pattern dispatched
} catch (Failure e) {
failed = candidate;
failure = e;
// could happen if function body throws fail
}
}
}
if (failed != null && mustSucceed) {
throw new UnguardedFail(failed.ast, failure);
}
return null;
}
