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| author | Nicholas Nethercote <n.nethercote@gmail.com> | 2025-04-28 06:33:22 +1000 |
|---|---|---|
| committer | Nicholas Nethercote <n.nethercote@gmail.com> | 2025-05-02 15:53:39 +1000 |
| commit | 0ea204a5ff39564b51bf9710c45ead44f9796c28 (patch) | |
| tree | acecc4717739e617760ccc00ad14593588a2ef96 /compiler/rustc_middle/src/thir.rs | |
| parent | 251cda5e1f0057eb04fd9fc1653f2f1e010e8f97 (diff) | |
| download | rust-0ea204a5ff39564b51bf9710c45ead44f9796c28.tar.gz rust-0ea204a5ff39564b51bf9710c45ead44f9796c28.zip | |
Add useful comments on `ExprKind::If` variants.
Things that aren't obvious and took me a while to work out.
Diffstat (limited to 'compiler/rustc_middle/src/thir.rs')
| -rw-r--r-- | compiler/rustc_middle/src/thir.rs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/compiler/rustc_middle/src/thir.rs b/compiler/rustc_middle/src/thir.rs index 086ec529f33..b9a014d14c0 100644 --- a/compiler/rustc_middle/src/thir.rs +++ b/compiler/rustc_middle/src/thir.rs @@ -292,7 +292,10 @@ pub enum ExprKind<'tcx> { If { if_then_scope: region::Scope, cond: ExprId, + /// `then` is always `ExprKind::Block`. then: ExprId, + /// If present, the `else_opt` expr is always `ExprKind::Block` (for + /// `else`) or `ExprKind::If` (for `else if`). else_opt: Option<ExprId>, }, /// A function call. Method calls and overloaded operators are converted to plain function calls. |