1 files changed, 115 insertions, 0 deletions
diff --git a/vendor/crypto-bigint/src/uint/macros.rs b/vendor/crypto-bigint/src/uint/macros.rs
new file mode 100644
index 000000000..47d32e79d
--- /dev/null
+++ b/vendor/crypto-bigint/src/uint/macros.rs
@@ -0,0 +1,115 @@
+// TODO(tarcieri): use `generic_const_exprs` when stable to make generic around bits.
+macro_rules! impl_uint_aliases {
+    ($(($name:ident, $bits:expr, $doc:expr)),+) => {
+        $(
+            #[doc = $doc]
+            #[doc="unsigned big integer."]
+            pub type $name = Uint<{nlimbs!($bits)}>;
+
+            impl Encoding for $name {
+
+                type Repr = [u8; $bits / 8];
+
+                #[inline]
+                fn from_be_bytes(bytes: Self::Repr) -> Self {
+                    Self::from_be_slice(&bytes)
+                }
+
+                #[inline]
+                fn from_le_bytes(bytes: Self::Repr) -> Self {
+                    Self::from_le_slice(&bytes)
+                }
+
+                #[inline]
+                fn to_be_bytes(&self) -> Self::Repr {
+                    let mut result = [0u8; $bits / 8];
+                    self.write_be_bytes(&mut result);
+                    result
+                }
+
+                #[inline]
+                fn to_le_bytes(&self) -> Self::Repr {
+                    let mut result = [0u8; $bits / 8];
+                    self.write_le_bytes(&mut result);
+                    result
+                }
+            }
+        )+
+     };
+}
+
+macro_rules! impl_uint_concat_split_mixed {
+    ($name:ident, $size:literal) => {
+        impl $crate::traits::ConcatMixed<Uint<{ U64::LIMBS * $size }>> for Uint<{ <$name>::LIMBS - U64::LIMBS * $size }>
+        {
+            type MixedOutput = $name;
+
+            fn concat_mixed(&self, lo: &Uint<{ U64::LIMBS * $size }>) -> Self::MixedOutput {
+                $crate::uint::concat::concat_mixed(lo, self)
+            }
+        }
+
+        impl $crate::traits::SplitMixed<Uint<{ U64::LIMBS * $size }>, Uint<{ <$name>::LIMBS - U64::LIMBS * $size }>> for $name
+        {
+            fn split_mixed(&self) -> (Uint<{ U64::LIMBS * $size }>, Uint<{ <$name>::LIMBS - U64::LIMBS * $size }>) {
+                $crate::uint::split::split_mixed(self)
+            }
+        }
+    };
+    ($name:ident, [ $($size:literal),+ ]) => {
+        $(
+            impl_uint_concat_split_mixed!($name, $size);
+        )+
+    };
+    ($( ($name:ident, $sizes:tt), )+) => {
+        $(
+            impl_uint_concat_split_mixed!($name, $sizes);
+        )+
+    };
+}
+
+macro_rules! impl_uint_concat_split_even {
+    ($name:ident) => {
+        impl $crate::traits::ConcatMixed<Uint<{ <$name>::LIMBS / 2 }>> for Uint<{ <$name>::LIMBS / 2 }>
+        {
+            type MixedOutput = $name;
+
+            fn concat_mixed(&self, lo: &Uint<{ <$name>::LIMBS / 2 }>) -> Self::MixedOutput {
+                $crate::uint::concat::concat_mixed(lo, self)
+            }
+        }
+
+        impl Uint<{ <$name>::LIMBS / 2 }> {
+            /// Concatenate the two values, with `self` as most significant and `rhs`
+            /// as the least significant.
+            pub const fn concat(&self, lo: &Uint<{ <$name>::LIMBS / 2 }>) -> $name {
+                $crate::uint::concat::concat_mixed(lo, self)
+            }
+        }
+
+        impl $crate::traits::SplitMixed<Uint<{ <$name>::LIMBS / 2 }>, Uint<{ <$name>::LIMBS / 2 }>> for $name
+        {
+            fn split_mixed(&self) -> (Uint<{ <$name>::LIMBS / 2 }>, Uint<{ <$name>::LIMBS / 2 }>) {
+                $crate::uint::split::split_mixed(self)
+            }
+        }
+
+        impl $crate::traits::Split for $name
+        {
+            type Output = Uint<{ <$name>::LIMBS / 2 }>;
+        }
+
+        impl $name {
+            /// Split this number in half, returning its high and low components
+            /// respectively.
+            pub const fn split(&self) -> (Uint<{ <$name>::LIMBS / 2 }>, Uint<{ <$name>::LIMBS / 2 }>) {
+                $crate::uint::split::split_mixed(self)
+            }
+        }
+    };
+    ($($name:ident,)+) => {
+        $(
+            impl_uint_concat_split_even!($name);
+        )+
+    }
+}