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| author | DrMeepster <19316085+DrMeepster@users.noreply.github.com> | 2022-09-11 00:37:49 -0700 |
|---|---|---|
| committer | DrMeepster <19316085+DrMeepster@users.noreply.github.com> | 2023-04-21 02:14:02 -0700 |
| commit | 511e457c4ba88097ee46ef07b7ef80ce4dd4a3c5 (patch) | |
| tree | 9aed1b0210cfd3c784a7c5cc89646b8d9dad5427 /compiler/rustc_target | |
| parent | b92a41c6760801a7128ca0ec69ba4ba9c9194054 (diff) | |
| download | rust-511e457c4ba88097ee46ef07b7ef80ce4dd4a3c5.tar.gz | |
offset_of
Diffstat (limited to 'compiler/rustc_target')
| -rw-r--r-- | compiler/rustc_target/src/abi/mod.rs | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/compiler/rustc_target/src/abi/mod.rs b/compiler/rustc_target/src/abi/mod.rs index 8d2e92cc76c..589cd3cf96b 100644 --- a/compiler/rustc_target/src/abi/mod.rs +++ b/compiler/rustc_target/src/abi/mod.rs @@ -124,6 +124,21 @@ impl<'a, Ty> TyAndLayout<'a, Ty> { { Ty::is_unit(self) } + + pub fn offset_of_subfield<C>(self, cx: &C, indices: impl Iterator<Item = usize>) -> Size + where + Ty: TyAbiInterface<'a, C>, + { + let mut layout = self; + let mut offset = Size::ZERO; + + for index in indices { + offset += layout.fields.offset(index); + layout = layout.field(cx, index); + } + + offset + } } impl<'a, Ty> TyAndLayout<'a, Ty> { |