time/parsing/
mod.rs

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1//! Parsing for various types.
2
3pub(crate) mod combinator;
4pub(crate) mod component;
5mod iso8601;
6pub(crate) mod parsable;
7mod parsed;
8pub(crate) mod shim;
9
10pub use self::parsable::Parsable;
11pub use self::parsed::Parsed;
12
13/// An item that has been parsed. Represented as a `(remaining, value)` pair.
14#[derive(Debug)]
15pub(crate) struct ParsedItem<'a, T>(pub(crate) &'a [u8], pub(crate) T);
16
17impl<'a, T> ParsedItem<'a, T> {
18    /// Map the value to a new value, preserving the remaining input.
19    pub(crate) fn map<U>(self, f: impl FnOnce(T) -> U) -> ParsedItem<'a, U> {
20        ParsedItem(self.0, f(self.1))
21    }
22
23    /// Map the value to a new, optional value, preserving the remaining input.
24    pub(crate) fn flat_map<U>(self, f: impl FnOnce(T) -> Option<U>) -> Option<ParsedItem<'a, U>> {
25        Some(ParsedItem(self.0, f(self.1)?))
26    }
27
28    /// Consume the stored value with the provided function. The remaining input is returned.
29    #[must_use = "this returns the remaining input"]
30    pub(crate) fn consume_value(self, f: impl FnOnce(T) -> Option<()>) -> Option<&'a [u8]> {
31        f(self.1)?;
32        Some(self.0)
33    }
34
35    /// Filter the value with the provided function. If the function returns `false`, the value
36    /// is discarded and `None` is returned. Otherwise, the value is preserved and `Some(self)` is
37    /// returned.
38    pub(crate) fn filter(self, f: impl FnOnce(&T) -> bool) -> Option<Self> {
39        f(&self.1).then_some(self)
40    }
41}
42
43impl<'a> ParsedItem<'a, ()> {
44    /// Discard the unit value, returning the remaining input.
45    #[must_use = "this returns the remaining input"]
46    pub(crate) const fn into_inner(self) -> &'a [u8] {
47        self.0
48    }
49}
50
51impl<'a> ParsedItem<'a, Option<()>> {
52    /// Discard the potential unit value, returning the remaining input.
53    #[must_use = "this returns the remaining input"]
54    pub(crate) const fn into_inner(self) -> &'a [u8] {
55        self.0
56    }
57}
time/parsing/mod.rs

time/parsing/
mod.rs
