std/cli/error
std/cli/src/error.trb
CliError: what is wrong with a command line. Every case names the command, spelled as the user typed it (torb check), and the argument that is wrong.
type CliError
type CliError with Show, ErrorWhy a command line was refused. CliError.show is the message a user reads: one line that names the command and the
argument.
torb check: unknown flag '--verbos'
torb build: option '--jobs': 'many' is not an integer
case UnknownCommand
case UnknownCommand(command: String, name: String, known: List<String>)name is none of the known subcommands of command.
case MissingCommand
case MissingCommand(command: String, known: List<String>)command has subcommands and no handler of its own, and none was named.
case UnknownFlag
case UnknownFlag(command: String, flag: String)flag, written with its dashes, is neither a flag nor an option of command.
case MissingValue
case MissingValue(command: String, option: String)The option option, written with its dashes, is the last argument and has no value.
case InvalidValue
case InvalidValue(command: String, option: String, value: String, reason: String)value is not what the option option reads: reason says why.
case ValueForFlag
case ValueForFlag(command: String, flag: String)The flag flag was written --flag=value, and a flag takes none.
case MissingOption
case MissingOption(command: String, option: String)The option option has no default and was left out.
case UnexpectedArgument
case UnexpectedArgument(command: String, argument: String)command takes no positional arguments, and argument is one.
fn command
fn command(): StringThe command, spelled as the user typed it: torb check.
fn show
fn show(): StringOne line that names the command and the argument that is wrong.