private void validate(ParseState state) {
CommandMetadata command = state.getCommand();
if (command == null) {
List<String> unparsedInput = state.getUnparsedInput();
if (unparsedInput.isEmpty()) {
throw new ParseCommandMissingException();
} else {
throw new ParseCommandUnrecognizedException(unparsedInput);
}
}
ArgumentsMetadata arguments = command.getArguments();
if (state.getParsedArguments().isEmpty() && arguments != null && arguments.isRequired()) {
throw new ParseArgumentsMissingException(arguments.getTitle());
}
if (!state.getUnparsedInput().isEmpty()) {
throw new ParseArgumentsUnexpectedException(state.getUnparsedInput());
}
if (state.getLocation() == Context.OPTION) {
throw new ParseOptionMissingValueException(state.getCurrentOption().getTitle());
}
for (OptionMetadata option : command.getAllOptions()) {
if (option.isRequired() && !state.getParsedOptions().containsKey(option)) {
throw new ParseOptionMissingException(option.getOptions().iterator().next());
}
}
}
public C parse(C commandInstance, String... args) {
Preconditions.checkNotNull(args, "args is null");
Parser parser = new Parser();
ParseState state = parser.parse(metadata, args);
if (state.getCommand() == null) {
if (state.getGroup() != null) {
state = state.withCommand(state.getGroup().getDefaultCommand());
} else {
state = state.withCommand(metadata.getDefaultCommand());
}
}
validate(state);
CommandMetadata command = state.getCommand();
return injectOptions(
commandInstance,
command.getAllOptions(),
state.getParsedOptions(),
command.getArguments(),
state.getParsedArguments(),
command.getMetadataInjections(),
ImmutableMap.<Class<?>, Object>of(GlobalMetadata.class, metadata));
}