private static Range defaultArity(IAnnotatedElement member) { ITypeInfo info = member.getTypeInfo(); if (member.isAnnotationPresent(Option.class)) { boolean zeroArgs = info.isBoolean() || (info.isMultiValue() && info.getAuxiliaryTypeInfos().get(0).isBoolean()); return zeroArgs ? Range.valueOf("0").unspecified(true) : Range.valueOf("1").unspecified(true); } if (info.isMultiValue()) { return Range.valueOf("0..1").unspecified(true); } return Range.valueOf("1").unspecified(true);// for single-valued fields (incl. boolean positional parameters) } /** Returns the default arity {@code Range} for {@link Option options}: booleans have arity 0, other types have arity 1.
private static Range parameterIndex(IAnnotatedElement member) { if (member.isAnnotationPresent(Parameters.class)) { Range result = Range.valueOf(member.getAnnotation(Parameters.class).index()); if (!result.isUnspecified) { return result; } } if (member.isMethodParameter()) { int min = member.getMethodParamPosition(); int max = member.isMultiValue() ? Integer.MAX_VALUE : min; return new Range(min, max, member.isMultiValue(), false, ""); } return Range.valueOf("*"); // the default } static Range adjustForType(Range result, IAnnotatedElement member) {
private static Range optionArity(IAnnotatedElement member) { return member.isAnnotationPresent(Option.class) ? adjustForType(Range.valueOf(member.getAnnotation(Option.class).arity()), member) : new Range(0, 0, false, true, "0"); } /** Returns a new {@code Range} based on the {@link Parameters#arity()} annotation on the specified field,
private static Range parameterArity(IAnnotatedElement member) { if (member.isAnnotationPresent(Parameters.class)) { return adjustForType(Range.valueOf(member.getAnnotation(Parameters.class).arity()), member); } else { return member.isMethodParameter() ? adjustForType(Range.valueOf(""), member) : new Range(0, 0, false, true, "0"); } } /** Returns a new {@code Range} based on the {@link Parameters#index()} annotation on the specified field.