Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 50 insertions, 0 deletions

diff --git a/third_party/rust/time/src/parsing/mod.rs b/third_party/rust/time/src/parsing/mod.rs
new file mode 100644
index 0000000000..4a2aa829f1
--- /dev/null
+++ b/third_party/rust/time/src/parsing/mod.rs
@@ -0,0 +1,50 @@
+//! Parsing for various types.
+
+pub(crate) mod combinator;
+pub(crate) mod component;
+mod iso8601;
+pub(crate) mod parsable;
+mod parsed;
+pub(crate) mod shim;
+
+pub use self::parsable::Parsable;
+pub use self::parsed::Parsed;
+
+/// An item that has been parsed. Represented as a `(remaining, value)` pair.
+#[derive(Debug)]
+pub(crate) struct ParsedItem<'a, T>(pub(crate) &'a [u8], pub(crate) T);
+
+impl<'a, T> ParsedItem<'a, T> {
+    /// Map the value to a new value, preserving the remaining input.
+    pub(crate) fn map<U>(self, f: impl FnOnce(T) -> U) -> ParsedItem<'a, U> {
+        ParsedItem(self.0, f(self.1))
+    }
+
+    /// Map the value to a new, optional value, preserving the remaining input.
+    pub(crate) fn flat_map<U>(self, f: impl FnOnce(T) -> Option<U>) -> Option<ParsedItem<'a, U>> {
+        Some(ParsedItem(self.0, f(self.1)?))
+    }
+
+    /// Consume the stored value with the provided function. The remaining input is returned.
+    #[must_use = "this returns the remaining input"]
+    pub(crate) fn consume_value(self, f: impl FnOnce(T) -> Option<()>) -> Option<&'a [u8]> {
+        f(self.1)?;
+        Some(self.0)
+    }
+}
+
+impl<'a> ParsedItem<'a, ()> {
+    /// Discard the unit value, returning the remaining input.
+    #[must_use = "this returns the remaining input"]
+    pub(crate) const fn into_inner(self) -> &'a [u8] {
+        self.0
+    }
+}
+
+impl<'a> ParsedItem<'a, Option<()>> {
+    /// Discard the potential unit value, returning the remaining input.
+    #[must_use = "this returns the remaining input"]
+    pub(crate) const fn into_inner(self) -> &'a [u8] {
+        self.0
+    }
+}