clap/args/
any_arg.rs

1// Std
2use std::rc::Rc;
3use std::fmt as std_fmt;
4use std::ffi::{OsStr, OsString};
5
6// Internal
7use args::settings::ArgSettings;
8use map::{self, VecMap};
9use INTERNAL_ERROR_MSG;
10
11#[doc(hidden)]
12pub trait AnyArg<'n, 'e>: std_fmt::Display {
13    fn name(&self) -> &'n str;
14    fn overrides(&self) -> Option<&[&'e str]>;
15    fn aliases(&self) -> Option<Vec<&'e str>>;
16    fn requires(&self) -> Option<&[(Option<&'e str>, &'n str)]>;
17    fn blacklist(&self) -> Option<&[&'e str]>;
18    fn required_unless(&self) -> Option<&[&'e str]>;
19    fn is_set(&self, ArgSettings) -> bool;
20    fn set(&mut self, ArgSettings);
21    fn has_switch(&self) -> bool;
22    fn max_vals(&self) -> Option<u64>;
23    fn min_vals(&self) -> Option<u64>;
24    fn num_vals(&self) -> Option<u64>;
25    fn possible_vals(&self) -> Option<&[&'e str]>;
26    fn validator(&self) -> Option<&Rc<Fn(String) -> Result<(), String>>>;
27    fn validator_os(&self) -> Option<&Rc<Fn(&OsStr) -> Result<(), OsString>>>;
28    fn short(&self) -> Option<char>;
29    fn long(&self) -> Option<&'e str>;
30    fn val_delim(&self) -> Option<char>;
31    fn takes_value(&self) -> bool;
32    fn val_names(&self) -> Option<&VecMap<&'e str>>;
33    fn help(&self) -> Option<&'e str>;
34    fn long_help(&self) -> Option<&'e str>;
35    fn default_val(&self) -> Option<&'e OsStr>;
36    fn default_vals_ifs(&self) -> Option<map::Values<(&'n str, Option<&'e OsStr>, &'e OsStr)>>;
37    fn env<'s>(&'s self) -> Option<(&'n OsStr, Option<&'s OsString>)>;
38    fn longest_filter(&self) -> bool;
39    fn val_terminator(&self) -> Option<&'e str>;
40}
41
42pub trait DispOrder {
43    fn disp_ord(&self) -> usize;
44}
45
46impl<'n, 'e, 'z, T: ?Sized> AnyArg<'n, 'e> for &'z T where T: AnyArg<'n, 'e> + 'z {
47    fn name(&self) -> &'n str { (*self).name() }
48    fn overrides(&self) -> Option<&[&'e str]> { (*self).overrides() }
49    fn aliases(&self) -> Option<Vec<&'e str>> { (*self).aliases() }
50    fn requires(&self) -> Option<&[(Option<&'e str>, &'n str)]> { (*self).requires() }
51    fn blacklist(&self) -> Option<&[&'e str]> { (*self).blacklist() }
52    fn required_unless(&self) -> Option<&[&'e str]> { (*self).required_unless() }
53    fn is_set(&self, a: ArgSettings) -> bool { (*self).is_set(a) }
54    fn set(&mut self, _: ArgSettings) { panic!(INTERNAL_ERROR_MSG) }
55    fn has_switch(&self) -> bool { (*self).has_switch() }
56    fn max_vals(&self) -> Option<u64> { (*self).max_vals() }
57    fn min_vals(&self) -> Option<u64> { (*self).min_vals() }
58    fn num_vals(&self) -> Option<u64> { (*self).num_vals() }
59    fn possible_vals(&self) -> Option<&[&'e str]> { (*self).possible_vals() }
60    fn validator(&self) -> Option<&Rc<Fn(String) -> Result<(), String>>> { (*self).validator() }
61    fn validator_os(&self) -> Option<&Rc<Fn(&OsStr) -> Result<(), OsString>>> { (*self).validator_os() }
62    fn short(&self) -> Option<char> { (*self).short() }
63    fn long(&self) -> Option<&'e str> { (*self).long() }
64    fn val_delim(&self) -> Option<char> { (*self).val_delim() }
65    fn takes_value(&self) -> bool { (*self).takes_value() }
66    fn val_names(&self) -> Option<&VecMap<&'e str>> { (*self).val_names() }
67    fn help(&self) -> Option<&'e str> { (*self).help() }
68    fn long_help(&self) -> Option<&'e str> { (*self).long_help() }
69    fn default_val(&self) -> Option<&'e OsStr> { (*self).default_val() }
70    fn default_vals_ifs(&self) -> Option<map::Values<(&'n str, Option<&'e OsStr>, &'e OsStr)>> { (*self).default_vals_ifs() }
71    fn env<'s>(&'s self) -> Option<(&'n OsStr, Option<&'s OsString>)> { (*self).env() }
72    fn longest_filter(&self) -> bool { (*self).longest_filter() }
73    fn val_terminator(&self) -> Option<&'e str> { (*self).val_terminator() }
74}