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allow for optional subcommands (texitoi/structopt#1)

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William Yao 2017-06-29 19:53:07 -05:00 committed by Guillaume P
parent baa96165f1
commit 91e2d28e81
1 changed files with 7 additions and 1 deletions
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8
structopt-derive/src/lib.rs
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@ -447,7 +447,13 @@ fn gen_from_subcommand(name: &Ident, variants: &[Variant]) -> quote::Tokens {
}
fn impl_structopt_for_struct(name: &Ident, fields: &[Field], attrs: &[Attribute]) -> quote::Tokens {
let subcmd_required = fields.iter().any(is_subcommand);
let subcmd_required = fields.iter().any(|field| {
let cur_type = ty(&field.ty);
match cur_type {
Ty::Option => false,
_ => is_subcommand(field)
}
});
let clap = gen_clap(attrs, subcmd_required);
let augment_clap = gen_augment_clap(fields);
let from_clap = gen_from_clap(name, fields);