1 files changed, 93 insertions, 0 deletions
diff --git a/libbindgen/src/ir/int.rs b/libbindgen/src/ir/int.rs
new file mode 100644
index 00000000..2d85db83
--- /dev/null
+++ b/libbindgen/src/ir/int.rs
@@ -0,0 +1,93 @@
+//! Intermediate representation for integral types.
+
+/// Which integral type are we dealing with?
+#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
+pub enum IntKind {
+    /// A `bool`.
+    Bool,
+
+    /// A `char`.
+    Char,
+
+    /// An `unsigned char`.
+    UChar,
+
+    /// A `short`.
+    Short,
+
+    /// An `unsigned short`.
+    UShort,
+
+    /// An `int`.
+    Int,
+
+    /// An `unsigned int`.
+    UInt,
+
+    /// A `long`.
+    Long,
+
+    /// An `unsigned long`.
+    ULong,
+
+    /// A `long long`.
+    LongLong,
+
+    /// An `unsigned long long`.
+    ULongLong,
+
+    /// A 8-bit signed integer.
+    I8,
+
+    /// A 8-bit unsigned integer.
+    U8,
+
+    /// A 16-bit signed integer.
+    I16,
+
+    /// Either a `char16_t` or a `wchar_t`.
+    U16,
+
+    /// A 32-bit signed integer.
+    I32,
+
+    /// A 32-bit unsigned integer.
+    U32,
+
+    /// A 64-bit signed integer.
+    I64,
+
+    /// A 64-bit unsigned integer.
+    U64,
+
+    /// An `int128_t`
+    I128,
+
+    /// A `uint128_t`.
+    U128,
+
+    /// A custom integer type, used to allow custom macro types depending on
+    /// range.
+    Custom {
+        /// The name of the type, which would be used without modification.
+        name: &'static str,
+        /// Whether the type is signed or not.
+        is_signed: bool,
+    },
+}
+
+impl IntKind {
+    /// Is this integral type signed?
+    pub fn is_signed(&self) -> bool {
+        use self::IntKind::*;
+        match *self {
+            Bool | UChar | UShort | UInt | ULong | ULongLong | U8 | U16 |
+            U32 | U64 | U128 => false,
+
+            Char | Short | Int | Long | LongLong | I8 | I16 | I32 | I64 |
+            I128 => true,
+
+            Custom { is_signed, .. } => is_signed,
+        }
+    }
+}