diff options
Diffstat (limited to 'third_party/rust/time-macros/src/format_description/public/component.rs')
-rw-r--r-- | third_party/rust/time-macros/src/format_description/public/component.rs | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/third_party/rust/time-macros/src/format_description/public/component.rs b/third_party/rust/time-macros/src/format_description/public/component.rs new file mode 100644 index 0000000000..4737c6ce5c --- /dev/null +++ b/third_party/rust/time-macros/src/format_description/public/component.rs @@ -0,0 +1,49 @@ +use proc_macro::{Ident, Span, TokenStream}; + +use super::modifier; +use crate::to_tokens::ToTokenStream; + +macro_rules! declare_component { + ($($name:ident)*) => { + pub(crate) enum Component {$( + $name(modifier::$name), + )*} + + impl ToTokenStream for Component { + fn append_to(self, ts: &mut TokenStream) { + let mut mts = TokenStream::new(); + + let component = match self {$( + Self::$name(modifier) => { + modifier.append_to(&mut mts); + stringify!($name) + } + )*}; + let component = Ident::new(component, Span::mixed_site()); + + quote_append! { ts + ::time::format_description::Component::#(component)(#S(mts)) + } + } + } + }; +} + +declare_component! { + Day + Month + Ordinal + Weekday + WeekNumber + Year + Hour + Minute + Period + Second + Subsecond + OffsetHour + OffsetMinute + OffsetSecond + Ignore + UnixTimestamp +} |