1 files changed, 83 insertions, 0 deletions
diff --git a/vendor/const-oid/src/error.rs b/vendor/const-oid/src/error.rs
new file mode 100644
index 0000000..528ce78
--- /dev/null
+++ b/vendor/const-oid/src/error.rs
@@ -0,0 +1,83 @@
+//! Error types
+
+use crate::Arc;
+use core::fmt;
+
+/// Result type
+pub type Result<T> = core::result::Result<T, Error>;
+
+/// OID errors.
+#[derive(Copy, Clone, Debug, Eq, PartialEq, PartialOrd, Ord)]
+pub enum Error {
+    /// Arc exceeds allowed range (i.e. for first or second OID)
+    ArcInvalid {
+        /// Arc value that is erroneous.
+        arc: Arc,
+    },
+
+    /// Arc is too big (exceeds 32-bit limits of this library).
+    ///
+    /// Technically the size of an arc is not constrained by X.660, however
+    /// this library has elected to use `u32` as the arc representation as
+    /// sufficient for PKIX/PKCS usages.
+    ArcTooBig,
+
+    /// Base 128 encoding error (used in BER/DER serialization of arcs).
+    Base128,
+
+    /// Expected a digit, but was provided something else.
+    DigitExpected {
+        /// What was found instead of a digit
+        actual: u8,
+    },
+
+    /// Input data is empty.
+    Empty,
+
+    /// OID length is invalid (too short or too long).
+    Length,
+
+    /// Minimum 3 arcs required.
+    NotEnoughArcs,
+
+    /// Trailing `.` character at end of input.
+    TrailingDot,
+}
+
+impl Error {
+    /// Escalate this error into a panic.
+    ///
+    /// This is a workaround until `Result::unwrap` is allowed in `const fn`.
+    #[allow(clippy::panic)]
+    pub(crate) const fn panic(self) -> ! {
+        match self {
+            Error::ArcInvalid { .. } | Error::ArcTooBig => panic!("OID contains invalid arc"),
+            Error::Base128 => panic!("OID contains arc with invalid base 128 encoding"),
+            Error::DigitExpected { .. } => panic!("OID expected to start with digit"),
+            Error::Empty => panic!("OID value is empty"),
+            Error::Length => panic!("OID length invalid"),
+            Error::NotEnoughArcs => panic!("OID requires minimum of 3 arcs"),
+            Error::TrailingDot => panic!("OID ends with invalid trailing '.'"),
+        }
+    }
+}
+
+impl fmt::Display for Error {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match *self {
+            Error::ArcInvalid { arc } => write!(f, "OID contains out-of-range arc: {}", arc),
+            Error::ArcTooBig => f.write_str("OID contains arc which is larger than 32-bits"),
+            Error::Base128 => f.write_str("OID contains arc with invalid base 128 encoding"),
+            Error::DigitExpected { actual } => {
+                write!(f, "expected digit, got '{}'", char::from(actual))
+            }
+            Error::Empty => f.write_str("OID value is empty"),
+            Error::Length => f.write_str("OID length invalid"),
+            Error::NotEnoughArcs => f.write_str("OID requires minimum of 3 arcs"),
+            Error::TrailingDot => f.write_str("OID ends with invalid trailing '.'"),
+        }
+    }
+}
+
+#[cfg(feature = "std")]
+impl std::error::Error for Error {}