use fallible convertions for Pos trait

klensy · klensy · commit 6169a1aaf387 · 2022-08-10T21:13:41.000+03:00
diff --git a/compiler/rustc_span/src/lib.rs b/compiler/rustc_span/src/lib.rs
@@ -1860,22 +1860,22 @@ macro_rules! impl_pos {
             impl Pos for $ident {
                 #[inline(always)]
                 fn from_usize(n: usize) -> $ident {
-                    $ident(n as $inner_ty)
+                    $ident(<$inner_ty>::try_from(n).unwrap())
                 }
 
                 #[inline(always)]
                 fn to_usize(&self) -> usize {
-                    self.0 as usize
+                    self.0.try_into().unwrap()
                 }
 
                 #[inline(always)]
                 fn from_u32(n: u32) -> $ident {
-                    $ident(n as $inner_ty)
+                    $ident(<$inner_ty>::try_from(n).unwrap())
                 }
 
                 #[inline(always)]
                 fn to_u32(&self) -> u32 {
-                    self.0 as u32
+                    self.0.try_into().unwrap()
                 }
             }
 

Original file line number	Diff line number	Diff line change
`@@ -1860,22 +1860,22 @@ macro_rules! impl_pos {`
`1860`	`1860`	`impl Pos for $ident {`
`1861`	`1861`	`#[inline(always)]`
`1862`	`1862`	`fn from_usize(n: usize) -> $ident {`
`1863`		`- $ident(n as $inner_ty)`
	`1863`	`+ $ident(<$inner_ty>::try_from(n).unwrap())`
`1864`	`1864`	`}`
`1865`	`1865`
`1866`	`1866`	`#[inline(always)]`
`1867`	`1867`	`fn to_usize(&self) -> usize {`
`1868`		`- self.0 as usize`
	`1868`	`+ self.0.try_into().unwrap()`
`1869`	`1869`	`}`
`1870`	`1870`
`1871`	`1871`	`#[inline(always)]`
`1872`	`1872`	`fn from_u32(n: u32) -> $ident {`
`1873`		`- $ident(n as $inner_ty)`
	`1873`	`+ $ident(<$inner_ty>::try_from(n).unwrap())`
`1874`	`1874`	`}`
`1875`	`1875`
`1876`	`1876`	`#[inline(always)]`
`1877`	`1877`	`fn to_u32(&self) -> u32 {`
`1878`		`- self.0 as u32`
	`1878`	`+ self.0.try_into().unwrap()`
`1879`	`1879`	`}`
`1880`	`1880`	`}`
`1881`	`1881`