Improve spans for indexing expressions #114434
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Some changes occurred in src/tools/rustfmt cc @rust-lang/rustfmt Some changes occurred in src/tools/clippy cc @rust-lang/clippy |
Noratrieb
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Aug 3, 2023
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| LL | let _ = z[0]; | ||
| | ^^^^ help: to access tuple elements, use: `z.0` | ||
| | ^^^ help: to access tuple elements, use: `.0` |
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maybe this got a little worse by not saying z.0 in the message anymore but mentioning the LHS could quickly get out of hand with larger lhs exprs so I don't think this is a problem.
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Ideally it would include the LHS if it is short, and if the LHS is longer (e.g. the criterion could be whether it's multiline or not), it would not include the LHS.
est31
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Indexing is similar to method calls in having an arbitrary left-hand-side and then something on the right, which is the main part of the expression. Method calls already have a span for that right part, but indexing does not. This means that long method chains that use indexing have really bad spans, especially when the indexing panics and that span in coverted into a panic location. This does the same thing as method calls for the AST and HIR, storing an extra span which is then put into the `fn_span` field in THIR.
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@bors r+ rollup |
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…iaskrgr Rollup of 9 pull requests Successful merges: - rust-lang#113945 (Fix wrong span for trait selection failure error reporting) - rust-lang#114351 ([rustc_span][perf] Remove unnecessary string joins and allocs.) - rust-lang#114418 (bump parking_lot to 0.12) - rust-lang#114434 (Improve spans for indexing expressions) - rust-lang#114450 (Fix ICE failed to get layout for ReferencesError) - rust-lang#114461 (Fix unwrap on None) - rust-lang#114462 (interpret: add mplace_to_ref helper method) - rust-lang#114472 (Reword `confusable_idents` lint) - rust-lang#114477 (Account for `Rc` and `Arc` when suggesting to clone) r? `@ghost` `@rustbot` modify labels: rollup
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Improve spans for indexing expressions fixes rust-lang#114388 Indexing is similar to method calls in having an arbitrary left-hand-side and then something on the right, which is the main part of the expression. Method calls already have a span for that right part, but indexing does not. This means that long method chains that use indexing have really bad spans, especially when the indexing panics and that span in coverted into a panic location. This does the same thing as method calls for the AST and HIR, storing an extra span which is then put into the `fn_span` field in THIR. r? compiler-errors
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…iaskrgr Rollup of 9 pull requests Successful merges: - rust-lang#113945 (Fix wrong span for trait selection failure error reporting) - rust-lang#114351 ([rustc_span][perf] Remove unnecessary string joins and allocs.) - rust-lang#114418 (bump parking_lot to 0.12) - rust-lang#114434 (Improve spans for indexing expressions) - rust-lang#114450 (Fix ICE failed to get layout for ReferencesError) - rust-lang#114461 (Fix unwrap on None) - rust-lang#114462 (interpret: add mplace_to_ref helper method) - rust-lang#114472 (Reword `confusable_idents` lint) - rust-lang#114477 (Account for `Rc` and `Arc` when suggesting to clone) r? `@ghost` `@rustbot` modify labels: rollup
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Improve spans for indexing expressions fixes rust-lang#114388 Indexing is similar to method calls in having an arbitrary left-hand-side and then something on the right, which is the main part of the expression. Method calls already have a span for that right part, but indexing does not. This means that long method chains that use indexing have really bad spans, especially when the indexing panics and that span in coverted into a panic location. This does the same thing as method calls for the AST and HIR, storing an extra span which is then put into the `fn_span` field in THIR. r? compiler-errors
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…iaskrgr Rollup of 9 pull requests Successful merges: - rust-lang#113945 (Fix wrong span for trait selection failure error reporting) - rust-lang#114351 ([rustc_span][perf] Remove unnecessary string joins and allocs.) - rust-lang#114418 (bump parking_lot to 0.12) - rust-lang#114434 (Improve spans for indexing expressions) - rust-lang#114450 (Fix ICE failed to get layout for ReferencesError) - rust-lang#114461 (Fix unwrap on None) - rust-lang#114462 (interpret: add mplace_to_ref helper method) - rust-lang#114472 (Reword `confusable_idents` lint) - rust-lang#114477 (Account for `Rc` and `Arc` when suggesting to clone) r? `@ghost` `@rustbot` modify labels: rollup
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Improve spans for indexing expressions fixes rust-lang#114388 Indexing is similar to method calls in having an arbitrary left-hand-side and then something on the right, which is the main part of the expression. Method calls already have a span for that right part, but indexing does not. This means that long method chains that use indexing have really bad spans, especially when the indexing panics and that span in coverted into a panic location. This does the same thing as method calls for the AST and HIR, storing an extra span which is then put into the `fn_span` field in THIR. r? compiler-errors
calebcartwright
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…iaskrgr Rollup of 9 pull requests Successful merges: - rust-lang#113945 (Fix wrong span for trait selection failure error reporting) - rust-lang#114351 ([rustc_span][perf] Remove unnecessary string joins and allocs.) - rust-lang#114418 (bump parking_lot to 0.12) - rust-lang#114434 (Improve spans for indexing expressions) - rust-lang#114450 (Fix ICE failed to get layout for ReferencesError) - rust-lang#114461 (Fix unwrap on None) - rust-lang#114462 (interpret: add mplace_to_ref helper method) - rust-lang#114472 (Reword `confusable_idents` lint) - rust-lang#114477 (Account for `Rc` and `Arc` when suggesting to clone) r? `@ghost` `@rustbot` modify labels: rollup
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fixes #114388
Indexing is similar to method calls in having an arbitrary left-hand-side and then something on the right, which is the main part of the expression. Method calls already have a span for that right part, but indexing does not. This means that long method chains that use indexing have really bad spans, especially when the indexing panics and that span in coverted into a panic location.
This does the same thing as method calls for the AST and HIR, storing an extra span which is then put into the
fn_spanfield in THIR.r? compiler-errors