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author | Robin Krahl <robin.krahl@ireas.org> | 2020-01-07 11:18:04 +0000 |
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committer | Daniel Mueller <deso@posteo.net> | 2020-01-08 09:20:25 -0800 |
commit | 5e20a29b4fdc8a2d442d1093681b396dcb4b816b (patch) | |
tree | 55ab083fa8999d2ccbb5e921c1ffe52560dca152 /rustversion/src/date.rs | |
parent | 203e691f46d591a2cc8acdfd850fa9f5b0fb8a98 (diff) | |
download | nitrocli-5e20a29b4fdc8a2d442d1093681b396dcb4b816b.tar.gz nitrocli-5e20a29b4fdc8a2d442d1093681b396dcb4b816b.tar.bz2 |
Add structopt dependency in version 0.3.7
This patch series replaces argparse with structopt in the argument
handling code. As a first step, we need structopt as a dependency.
Import subrepo structopt/:structopt at efbdda4753592e27bc430fb01f7b9650b2f3174d
Import subrepo bitflags/:bitflags at 30668016aca6bd3b02c766e8347e0b4080d4c296
Import subrepo clap/:clap at 784524f7eb193e35f81082cc69454c8c21b948f7
Import subrepo heck/:heck at 093d56fbf001e1506e56dbfa38631d99b1066df1
Import subrepo proc-macro-error/:proc-macro-error at 6c4cfe79a622c5de8ae68557993542be46eacae2
Import subrepo proc-macro2/:proc-macro2 at d5d48eddca4566e5438e8a2cbed4a74e049544de
Import subrepo quote/:quote at 727436c6c137b20f0f34dde5d8fda2679b9747ad
Import subrepo rustversion/:rustversion at 0c5663313516263059ce9059ef81fc7a1cf655ca
Import subrepo syn-mid/:syn-mid at 5d3d85414a9e6674e1857ec22a87b96e04a6851a
Import subrepo syn/:syn at e87c27e87f6f4ef8919d0372bdb056d53ef0d8f3
Import subrepo textwrap/:textwrap at abcd618beae3f74841032aa5b53c1086b0a57ca2
Import subrepo unicode-segmentation/:unicode-segmentation at 637c9874c4fe0c205ff27787faf150a40295c6c3
Import subrepo unicode-width/:unicode-width at 3033826f8bf05e82724140a981d5941e48fce393
Import subrepo unicode-xid/:unicode-xid at 4baae9fffb156ba229665b972a9cd5991787ceb7
Diffstat (limited to 'rustversion/src/date.rs')
-rw-r--r-- | rustversion/src/date.rs | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/rustversion/src/date.rs b/rustversion/src/date.rs new file mode 100644 index 0000000..631b762 --- /dev/null +++ b/rustversion/src/date.rs @@ -0,0 +1,77 @@ +use crate::time; +use std::fmt::{self, Display}; +use std::num::ParseIntError; +use std::str::FromStr; +use syn::parse::{Error, Parse, ParseStream}; +use syn::{LitInt, Token}; + +#[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord)] +pub struct Date { + pub year: u16, + pub month: u8, + pub day: u8, +} + +impl Display for Date { + fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + write!( + formatter, + "{:04}-{:02}-{:02}", + self.year, self.month, self.day, + ) + } +} + +pub struct ParseDateError; + +impl From<ParseIntError> for ParseDateError { + fn from(_err: ParseIntError) -> Self { + ParseDateError + } +} + +impl FromStr for Date { + type Err = ParseDateError; + + fn from_str(s: &str) -> Result<Self, Self::Err> { + let mut date = s.split('-'); + let year = date.next().ok_or(ParseDateError)?.parse()?; + let month = date.next().ok_or(ParseDateError)?.parse()?; + let day = date.next().ok_or(ParseDateError)?.parse()?; + match date.next() { + None => Ok(Date { year, month, day }), + Some(_) => Err(ParseDateError), + } + } +} + +impl Parse for Date { + fn parse(input: ParseStream) -> syn::Result<Self> { + let span = input.cursor().token_stream(); + let error = || { + Error::new_spanned( + &span, + format!("expected nightly date, like {}", time::today()), + ) + }; + + let year: LitInt = input.parse().map_err(|_| error())?; + input.parse::<Token![-]>()?; + let month: LitInt = input.parse().map_err(|_| error())?; + input.parse::<Token![-]>()?; + let day: LitInt = input.parse().map_err(|_| error())?; + + let year = year.base10_parse::<u64>().map_err(|_| error())?; + let month = month.base10_parse::<u64>().map_err(|_| error())?; + let day = day.base10_parse::<u64>().map_err(|_| error())?; + if year >= 3000 || month > 12 || day > 31 { + return Err(error()); + } + + Ok(Date { + year: year as u16, + month: month as u8, + day: day as u8, + }) + } +} |