Rollup of 4 pull requests #125797
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Rollup of 4 pull requests #125797
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…constraint, r=compiler-errors
Rename HIR `TypeBinding` to `AssocItemConstraint` and related cleanup
Rename `hir::TypeBinding` and `ast::AssocConstraint` to `AssocItemConstraint` and update all items and locals using the old terminology.
Motivation: The terminology *type binding* is extremely outdated. "Type bindings" not only include constraints on associated *types* but also on associated *constants* (feature `associated_const_equality`) and on RPITITs of associated *functions* (feature `return_type_notation`). Hence the word *item* in the new name. Furthermore, the word *binding* commonly refers to a mapping from a binder/identifier to a "value" for some definition of "value". Its use in "type binding" made sense when equality constraints (e.g., `AssocTy = Ty`) were the only kind of associated item constraint. Nowadays however, we also have *associated type bounds* (e.g., `AssocTy: Bound`) for which the term *binding* doesn't make sense.
---
Old terminology (HIR, rustdoc):
```
`TypeBinding`: (associated) type binding
├── `Constraint`: associated type bound
└── `Equality`: (associated) equality constraint (?)
├── `Ty`: (associated) type binding
└── `Const`: associated const equality (constraint)
```
Old terminology (AST, abbrev.):
```
`AssocConstraint`
├── `Bound`
└── `Equality`
├── `Ty`
└── `Const`
```
New terminology (AST, HIR, rustdoc):
```
`AssocItemConstraint`: associated item constraint
├── `Bound`: associated type bound
└── `Equality`: associated item equality constraint OR associated item binding (for short)
├── `Ty`: associated type equality constraint OR associated type binding (for short)
└── `Const`: associated const equality constraint OR associated const binding (for short)
```
r? compiler-errors
…piler-errors
Avoid unwrap diag.code directly in note_and_explain_type_err
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Fixes rust-lang#125757
…r=lcnr Fold item bounds before proving them in `check_type_bounds` in new solver Vaguely confident that this is sufficient to prevent rust-lang/trait-system-refactor-initiative#46 and rust-lang/trait-system-refactor-initiative#62. This is not the "correct" solution, but will probably suffice until coinduction, at which point we implement the right solution (`check_type_bounds` must prove `Assoc<...> alias-eq ConcreteType`, normalizing requires proving item bounds). r? lcnr
…-in-lower-stmts, r=lcnr Don't recompute `tail` in `lower_stmts` Does not really matter, but this is slightly nicer. `@bors` rollup
rustbot
added
A-rustdoc-json
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@bors r+ rollup=never p=4 |
bors
added
S-waiting-on-bors
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☀️ Test successful - checks-actions |
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📌 Perf builds for each rolled up PR:
previous master: 366da30d55 In the case of a perf regression, run the following command for each PR you suspect might be the cause: |
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Finished benchmarking commit (bf8fff7): comparison URL. Overall result: no relevant changes - no action needed@rustbot label: -perf-regression Instruction countThis benchmark run did not return any relevant results for this metric. Max RSS (memory usage)Results (secondary 2.8%)This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.
CyclesThis benchmark run did not return any relevant results for this metric. Binary sizeThis benchmark run did not return any relevant results for this metric. Bootstrap: 666.738s -> 668.018s (0.19%) |
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Successful merges:
TypeBindingtoAssocItemConstraintand related cleanup #125635 (Rename HIRTypeBindingtoAssocItemConstraintand related cleanup)check_type_boundsin new solver #125786 (Fold item bounds before proving them incheck_type_boundsin new solver)tailinlower_stmts#125790 (Don't recomputetailinlower_stmts)r? @ghost
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