clap_derive/
dummies.rs

1//! Dummy implementations that we emit along with an error.
2
3use proc_macro2::Ident;
4use quote::quote;
5
6#[must_use]
7pub(crate) fn parser(name: &Ident) -> proc_macro2::TokenStream {
8    let into_app = into_app(name);
9    quote!(
10        #[automatically_derived]
11        impl clap::Parser for #name {}
12        #into_app
13    )
14}
15
16#[must_use]
17pub(crate) fn into_app(name: &Ident) -> proc_macro2::TokenStream {
18    quote! {
19        #[automatically_derived]
20        impl clap::CommandFactory for #name {
21            fn command<'b>() -> clap::Command {
22                unimplemented!()
23            }
24            fn command_for_update<'b>() -> clap::Command {
25                unimplemented!()
26            }
27        }
28    }
29}
30
31#[must_use]
32pub(crate) fn from_arg_matches(name: &Ident) -> proc_macro2::TokenStream {
33    quote! {
34        #[automatically_derived]
35        impl clap::FromArgMatches for #name {
36            fn from_arg_matches(_m: &clap::ArgMatches) -> ::std::result::Result<Self, clap::Error> {
37                unimplemented!()
38            }
39            fn update_from_arg_matches(&mut self, matches: &clap::ArgMatches) -> ::std::result::Result<(), clap::Error>{
40                unimplemented!()
41            }
42        }
43    }
44}
45
46#[must_use]
47pub(crate) fn subcommand(name: &Ident) -> proc_macro2::TokenStream {
48    let from_arg_matches = from_arg_matches(name);
49    quote! {
50        #[automatically_derived]
51        impl clap::Subcommand for #name {
52            fn augment_subcommands(_cmd: clap::Command) -> clap::Command {
53                unimplemented!()
54            }
55            fn augment_subcommands_for_update(_cmd: clap::Command) -> clap::Command {
56                unimplemented!()
57            }
58            fn has_subcommand(name: &str) -> bool {
59                unimplemented!()
60            }
61        }
62        #from_arg_matches
63    }
64}
65
66#[must_use]
67pub(crate) fn args(name: &Ident) -> proc_macro2::TokenStream {
68    let from_arg_matches = from_arg_matches(name);
69    quote! {
70        #[automatically_derived]
71        impl clap::Args for #name {
72            fn augment_args(_cmd: clap::Command) -> clap::Command {
73                unimplemented!()
74            }
75            fn augment_args_for_update(_cmd: clap::Command) -> clap::Command {
76                unimplemented!()
77            }
78        }
79        #from_arg_matches
80    }
81}
82
83#[must_use]
84pub(crate) fn value_enum(name: &Ident) -> proc_macro2::TokenStream {
85    quote! {
86        #[automatically_derived]
87        impl clap::ValueEnum for #name {
88            fn value_variants<'a>() -> &'a [Self]{
89                unimplemented!()
90            }
91            fn from_str(_input: &str, _ignore_case: bool) -> ::std::result::Result<Self, String> {
92                unimplemented!()
93            }
94            fn to_possible_value<'a>(&self) -> ::std::option::Option<clap::builder::PossibleValue>{
95                unimplemented!()
96            }
97        }
98    }
99}
clap_derive/dummies.rs

clap_derive/
dummies.rs
