public ArgumentItem getArgument(int argumentIndex) {
for (ArgumentItem each : argumentItemList) {
Argument arg = each.getArgumentDescriptor();
if (arg.index() == argumentIndex) return each;
if (arg.index() < argumentIndex && each.takesMultipleArguments()) return each;
}
return null;
}
private void validate(ArgumentItem newArg) {
Range newRange = newArg.getRange();
for (ArgumentItem each : argumentItemList) {
Range r = each.getRange();
if (r.overlaps(newRange))
throw new XerialError(
XerialErrorCode.DUPLICATE_OPTION,
String.format("argument %s and %s have an overlap", each, newArg));
}
}
protected static String argumentExpression(ArgumentItem argItem) {
StringBuilder line = new StringBuilder();
Argument arg = argItem.getArgumentDescriptor();
String format;
if (arg.required()) format = argItem.takesMultipleArguments() ? "%s ..." : "%s";
else format = argItem.takesMultipleArguments() ? "[%s ...]" : "[%s]";
String name = StringUtil.varNameToNaturalName(argItem.getArgumentName());
line.append(String.format(format, name));
return line.toString();
}
