Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

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

1 files changed, 69 insertions, 0 deletions

diff --git a/third_party/rust/rust_decimal/src/error.rs b/third_party/rust/rust_decimal/src/error.rs
new file mode 100644
index 0000000000..5e5969e42b
--- /dev/null
+++ b/third_party/rust/rust_decimal/src/error.rs
@@ -0,0 +1,69 @@
+use crate::{constants::MAX_PRECISION_U32, Decimal};
+use alloc::string::String;
+use core::fmt;
+
+/// Error type for the library.
+#[derive(Clone, Debug, PartialEq)]
+pub enum Error {
+    /// A generic error from Rust Decimal with the `String` containing more information as to what
+    /// went wrong.
+    ///
+    /// This is a legacy/deprecated error type retained for backwards compatibility.  
+    ErrorString(String),
+    /// The value provided exceeds `Decimal::MAX`.
+    ExceedsMaximumPossibleValue,
+    /// The value provided is less than `Decimal::MIN`.
+    LessThanMinimumPossibleValue,
+    /// An underflow is when there are more fractional digits than can be represented within `Decimal`.
+    Underflow,
+    /// The scale provided exceeds the maximum scale that `Decimal` can represent.
+    ScaleExceedsMaximumPrecision(u32),
+    /// Represents a failure to convert to/from `Decimal` to the specified type. This is typically
+    /// due to type constraints (e.g. `Decimal::MAX` cannot be converted into `i32`).
+    ConversionTo(String),
+}
+
+impl<S> From<S> for Error
+where
+    S: Into<String>,
+{
+    #[inline]
+    fn from(from: S) -> Self {
+        Self::ErrorString(from.into())
+    }
+}
+
+#[cold]
+pub(crate) fn tail_error(from: &'static str) -> Result<Decimal, Error> {
+    Err(from.into())
+}
+
+#[cfg(feature = "std")]
+impl std::error::Error for Error {}
+
+impl fmt::Display for Error {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match *self {
+            Self::ErrorString(ref err) => f.pad(err),
+            Self::ExceedsMaximumPossibleValue => {
+                write!(f, "Number exceeds maximum value that can be represented.")
+            }
+            Self::LessThanMinimumPossibleValue => {
+                write!(f, "Number less than minimum value that can be represented.")
+            }
+            Self::Underflow => {
+                write!(f, "Number has a high precision that can not be represented.")
+            }
+            Self::ScaleExceedsMaximumPrecision(ref scale) => {
+                write!(
+                    f,
+                    "Scale exceeds the maximum precision allowed: {} > {}",
+                    scale, MAX_PRECISION_U32
+                )
+            }
+            Self::ConversionTo(ref type_name) => {
+                write!(f, "Error while converting to {}", type_name)
+            }
+        }
+    }
+}