Improve pattern printing for manual_let_else #10797
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r? @llogiq (rustbot has picked a reviewer for you, use r? to override) |
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cc @giraffate |
This was referenced May 18, 2023
* Replace variables inside | patterns in the if let: let v = if let V::A(v) | V::B(v) = v { v } else ...
* Support nested patterns: let v = if let Ok(Ok(Ok(v))) = v { v } else ...
* Support tuple structs with more than one arg: let v = V::W(v, _) = v { v } else ...
* Correctly handle .. in tuple struct patterns: let v = V::X(v, ..) = v { v } else ...
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Great improvement! Thank you! @bors r+ |
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☀️ Test successful - checks-action_dev_test, checks-action_remark_test, checks-action_test |
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manual_let_else: support struct patterns This adds upon the improvements of #10797 and: * Only prints `()` around `Or` patterns at the top level (fixing a regression of #10797) * Supports multi-binding patterns: `let (u, v) = if let (Some(u_i), Ok(v_i)) = ex { (u_i, v_i) } else ...` * Traverses through tuple patterns: `let v = if let (Some(v), None) = ex { v } else ...` * Supports struct patterns: `let v = if let S { v, w, } = ex { (v, w) } else ...` ``` changelog: [`manual_let_else`]: improve pattern printing to support struct patterns ``` fixes #10708 fixes #10424
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let v = if let V::A(v) | V::B(v) = v { v } else ...let v = if let Ok(Ok(Ok(v))) = v { v } else ...let v = V::W(v, _) = v { v } else ...; note that more than one capture is still not supported, so it bails forlet (v, w) = if let E::F(vi, wi) = x { (vi, wi)}let v = V::X(v, ..) = v { v } else ....stderrfile)cargo testpasses locallycargo dev update_lintscargo dev fmtchangelog: [
manual_let_else]: improve variable name in suggestionsCloses #10431 as this PR is adding a test for the
mutcase.