Change results to options

Author: pvdrz

src/librustc/mir/interpret/value.rs

@@ -237,12 +237,12 @@ impl<'tcx, Tag> Scalar<Tag> {
     }
 
     #[inline]
-    pub fn try_from_uint(i: impl Into<u128>, size: Size) -> InterpResult<'tcx, Self> {
+    pub fn try_from_uint(i: impl Into<u128>, size: Size) -> Option<Self> {
         let i = i.into();
         if truncate(i, size) == i {
-            Ok(Scalar::Raw { data: i, size: size.bytes() as u8 })
+            Some(Scalar::Raw { data: i, size: size.bytes() as u8 })
         } else {
-            throw_unsup_format!("Unsigned value {:#x} does not fit in {} bits", i, size.bits())
+            None
         }
     }
 
@@ -272,14 +272,14 @@ impl<'tcx, Tag> Scalar<Tag> {
     }
 
     #[inline]
-    pub fn try_from_int(i: impl Into<i128>, size: Size) -> InterpResult<'tcx, Self> {
+    pub fn try_from_int(i: impl Into<i128>, size: Size) -> Option<Self> {
         let i = i.into();
         // `into` performed sign extension, we have to truncate
         let truncated = truncate(i as u128, size);
         if sign_extend(truncated, size) as i128 == i {
-            Ok(Scalar::Raw { data: truncated, size: size.bytes() as u8 })
+            Some(Scalar::Raw { data: truncated, size: size.bytes() as u8 })
         } else {
-            throw_unsup_format!("Signed value {:#x} does not fit in {} bits", i, size.bits())
+            None
         }
     }
 

src/librustc_mir/interpret/operand.rs

@@ -219,17 +219,17 @@ impl<'tcx, Tag: Copy> ImmTy<'tcx, Tag> {
     }
 
     #[inline]
-    pub fn try_from_uint(i: impl Into<u128>, layout: TyLayout<'tcx>) -> InterpResult<'tcx, Self> {
-        Ok(Self::from_scalar(Scalar::try_from_uint(i, layout.size)?, layout))
+    pub fn try_from_uint(i: impl Into<u128>, layout: TyLayout<'tcx>) -> Option<Self> {
+        Some(Self::from_scalar(Scalar::try_from_uint(i, layout.size)?, layout))
     }
     #[inline]
     pub fn from_uint(i: impl Into<u128>, layout: TyLayout<'tcx>) -> Self {
         Self::try_from_uint(i, layout).unwrap()
     }
 
     #[inline]
-    pub fn try_from_int(i: impl Into<i128>, layout: TyLayout<'tcx>) -> InterpResult<'tcx, Self> {
-        Ok(Self::from_scalar(Scalar::try_from_int(i, layout.size)?, layout))
+    pub fn try_from_int(i: impl Into<i128>, layout: TyLayout<'tcx>) -> Option<Self> {
+        Some(Self::from_scalar(Scalar::try_from_int(i, layout.size)?, layout))
     }
 
     #[inline]