final formatting: 0.2.2 - todo: signed logic, assign ops, shifts, divrem, display

src/pretty.rs

@@ -1,6 +1,8 @@
 use crate::SmallInt;
 use crate::SmallUint;
 
+use crate::smallint::{SmallIntType, SmallUintType};
+
 #[cfg(feature = "num-bigint")]
 use num_bigint::{BigInt, BigUint};
 
@@ -17,3 +19,115 @@ impl core::fmt::Debug for SmallUint {
         write!(f, "{}", BigUint::from(self))
     }
 }
+
+#[cfg(feature = "num-bigint")]
+impl core::fmt::Display for SmallInt {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", BigInt::from(self))
+    }
+}
+
+#[cfg(feature = "num-bigint")]
+impl core::fmt::Display for SmallUint {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", BigUint::from(self))
+    }
+}
+
+impl core::fmt::UpperHex for SmallUint {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self.0 {
+            SmallUintType::Inline(i) => write!(f, "0x{:X}", i),
+            SmallUintType::Heap((r, s)) => {
+                let slice = unsafe { core::slice::from_raw_parts(r, s) };
+                let mut iter = slice.iter().rev();
+                if let Some(i) = iter.next() {
+                    write!(f, "0x{:X}", i)?;
+                }
+                for i in iter {
+                    write!(f, "{:08X}", i)?;
+                }
+                Ok(())
+            }
+        }
+    }
+}
+
+impl core::fmt::LowerHex for SmallUint {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self.0 {
+            SmallUintType::Inline(i) => write!(f, "0x{:x}", i),
+            SmallUintType::Heap((r, s)) => {
+                let slice = unsafe { core::slice::from_raw_parts(r, s) };
+                let mut iter = slice.iter().rev();
+                if let Some(i) = iter.next() {
+                    write!(f, "0x{:x}", i)?;
+                }
+                for i in iter {
+                    write!(f, "{:08x}", i)?;
+                }
+                Ok(())
+            }
+        }
+    }
+}
+
+impl core::fmt::UpperHex for SmallInt {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self.0 {
+            SmallIntType::Inline(i) => match i {
+                x if x >= 0 => write!(f, "0x{:X}", i),
+                x if x < 0 => write!(f, "-0x{:X}", -i),
+                _ => panic!("This should not happen."),
+            },
+            SmallIntType::Heap((r, s)) => {
+                let sign = match s.signum() {
+                    x if x >= 0 => "",
+                    x if x < 0 => "-",
+                    _ => panic!("This should not happen."),
+                };
+
+                let slice =
+                    unsafe { core::slice::from_raw_parts(r, usize::try_from(s.abs()).unwrap()) };
+                let mut iter = slice.iter().rev();
+                if let Some(i) = iter.next() {
+                    write!(f, "{}0x{:X}", sign, i)?;
+                }
+                for i in iter {
+                    write!(f, "{:08X}", i)?;
+                }
+                Ok(())
+            }
+        }
+    }
+}
+
+impl core::fmt::LowerHex for SmallInt {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self.0 {
+            SmallIntType::Inline(i) => match i {
+                x if x >= 0 => write!(f, "0x{:x}", i),
+                x if x < 0 => write!(f, "-0x{:x}", -i),
+                _ => panic!("This should not happen."),
+            },
+            SmallIntType::Heap((r, s)) => {
+                let sign = match s.signum() {
+                    x if x >= 0 => "",
+                    x if x < 0 => "-",
+                    _ => panic!("This should not happen."),
+                };
+
+                let slice =
+                    unsafe { core::slice::from_raw_parts(r, usize::try_from(s.abs()).unwrap()) };
+                let mut iter = slice.iter().rev();
+                if let Some(i) = iter.next() {
+                    write!(f, "{}0x{:x}", sign, i)?;
+                }
+                for i in iter {
+                    write!(f, "{:08x}", i)?;
+                }
+                Ok(())
+            }
+        }
+    }
+}