| Age | Commit message (Collapse) | Author | Lines |
|---|
|
Similar to the previous commit.
|
|
We currently use `can_begin_literal_maybe_minus` in a couple of places
where only string literals are allowed. This commit introduces a
more specific function, which makes things clearer. It doesn't change
behaviour because the two functions affected (`is_unsafe_foreign_mod`
and `check_keyword_case`) are always followed by a call to `parse_abi`,
which checks again for a string literal.
|
|
It's clearer this way, because the `Interpolated` cases in
`can_begin_const_arg` and `is_pat_range_end_start` are more permissive
than the `Interpolated` cases in `can_begin_literal_maybe_minus`.
|
|
|
|
r=petrochenkov
Fix duplicated attributes on nonterminal expressions
This PR fixes a long-standing bug (#86055) whereby expression attributes can be duplicated when expanded through declarative macros.
First, consider how items are parsed in declarative macros:
```
Items:
- parse_nonterminal
- parse_item(ForceCollect::Yes)
- parse_item_
- attrs = parse_outer_attributes
- parse_item_common(attrs)
- maybe_whole!
- collect_tokens_trailing_token
```
The important thing is that the parsing of outer attributes is outside token collection, so the item's tokens don't include the attributes. This is how it's supposed to be.
Now consider how expression are parsed in declarative macros:
```
Exprs:
- parse_nonterminal
- parse_expr_force_collect
- collect_tokens_no_attrs
- collect_tokens_trailing_token
- parse_expr
- parse_expr_res(None)
- parse_expr_assoc_with
- parse_expr_prefix
- parse_or_use_outer_attributes
- parse_expr_dot_or_call
```
The important thing is that the parsing of outer attributes is inside token collection, so the the expr's tokens do include the attributes, i.e. in `AttributesData::tokens`.
This PR fixes the bug by rearranging expression parsing to that outer attribute parsing happens outside of token collection. This requires a number of small refactorings because expression parsing is somewhat complicated. While doing so the PR makes the code a bit cleaner and simpler, by eliminating `parse_or_use_outer_attributes` and `Option<AttrWrapper>` arguments (in favour of the simpler `parse_outer_attributes` and `AttrWrapper` arguments), and simplifying `LhsExpr`.
r? `@petrochenkov`
|
|
It now parses outer attributes before collecting tokens. This avoids the
problem where the outer attribute tokens were being stored twice -- for
the attribute tokesn, and also for the expression tokens.
Fixes #86055.
|
|
This removes the final `Option<AttrWrapper>` argument.
|
|
By making the `AttrWrapper` non-optional.
|
|
This eliminates another `Option<AttrWrapper>` argument and changes one
obscure error message.
|
|
This eliminates one `Option<AttrWrapper>` argument.
|
|
It has a single call site.
|
|
Combine `NotYetParsed` and `AttributesParsed` into a single variant,
because (a) that reflects the structure of the code that consumes
`LhsExpr`, and (b) because that variant will have the `Option` removed
in a later commit.
|
|
The `Option<AttrWrapper>` one maps to the first two variants, and the
`P<Expr>` one maps to the third. Weird. The code is shorter and clearer
without them.
|
|
The call in `parse_expr_prefix` for the `++` case passes an empty
`attrs`, but it doesn' need to. This commit changes it to pass the
parsed `attrs`, which doesn't change any behaviour. As a result,
`parse_expr_dot_or_call` no longer needs an `Option` argument, and no
longer needs to call `parse_or_use_outer_attributes`.
|
|
|
|
delegation: Implement glob delegation
Support delegating to all trait methods in one go.
Overriding globs with explicit definitions is also supported.
The implementation is generally based on the design from https://github.com/rust-lang/rfcs/pull/3530#issuecomment-2020869823, but unlike with list delegation in https://github.com/rust-lang/rust/pull/123413 we cannot expand glob delegation eagerly.
We have to enqueue it into the queue of unexpanded macros (most other macros are processed this way too), and then a glob delegation waits in that queue until its trait path is resolved, and enough code expands to generate the identifier list produced from the glob.
Glob delegation is only allowed in impls, and can only point to traits.
Supporting it in other places gives very little practical benefit, but significantly raises the implementation complexity.
Part of https://github.com/rust-lang/rust/issues/118212.
|
|
|
|
|
|
|
|
This paves the way for tracking more state (e.g. error tainting) in the diagnostic context handle
|
|
|
|
|
|
parse_precise_capturing_syntax
|
|
|
|
More `rustc_parse` cleanups
Following on from #125815.
r? `@spastorino`
|
|
Parse unsafe attributes
Initial parse implementation for #123757
This is the initial work to parse unsafe attributes, which is represented as an extra `unsafety` field in `MetaItem` and `AttrItem`. There's two areas in the code where it appears that parsing is done manually and not using the parser stuff, and I'm not sure how I'm supposed to thread the change there.
|
|
Revert: create const block bodies in typeck via query feeding
as per the discussion in https://github.com/rust-lang/rust/pull/125806#discussion_r1622563948
It was a mistake to try to shoehorn const blocks and some specific anon consts into the same box and feed them during typeck. It turned out not simplifying anything (my hope was that we could feed `type_of` to start avoiding the huge HIR matcher, but that didn't work out), but instead making a few things more fragile.
reverts the const-block-specific parts of https://github.com/rust-lang/rust/pull/124650
`@bors` rollup=never had a small perf impact previously
fixes https://github.com/rust-lang/rust/issues/125846
r? `@compiler-errors`
|
|
This reverts commit ddc5f9b6c1f21da5d4596bf7980185a00984ac42.
|
|
|
|
|
|
r=davidtwco"
This reverts commit 57dad1d75e562ff73051c1c43b07eaf65c7dbd74, reversing
changes made to 36316df9fe6c3e246153fe6e78967643cf08c148.
|
|
Unsafe extern blocks
This implements RFC 3484.
Tracking issue #123743 and RFC https://github.com/rust-lang/rfcs/pull/3484
This is better reviewed commit by commit.
|
|
It has only two uses, and both use `matches_codepattern`. So just change
it to `assert_matches_codepattern`.
|
|
|
|
Currently we have an awkward mix of fallible and infallible functions:
```
new_parser_from_source_str
maybe_new_parser_from_source_str
new_parser_from_file
(maybe_new_parser_from_file) // missing
(new_parser_from_source_file) // missing
maybe_new_parser_from_source_file
source_str_to_stream
maybe_source_file_to_stream
```
We could add the two missing functions, but instead this commit removes
of all the infallible ones and renames the fallible ones leaving us with
these which are all fallible:
```
new_parser_from_source_str
new_parser_from_file
new_parser_from_source_file
source_str_to_stream
source_file_to_stream
```
This requires making `unwrap_or_emit_fatal` public so callers of
formerly infallible functions can still work.
This does make some of the call sites slightly more verbose, but I think
it's worth it for the simpler API. Also, there are two `catch_unwind`
calls and one `catch_fatal_errors` call in this diff that become
removable thanks this change. (I will do that in a follow-up PR.)
|
|
It's the only one of these functions where `psess` isn't the first
argument.
|
|
All four functions are simple and have a single call site.
This requires making `Parser::parse_inner_attributes` public, which is
no big deal.
|
|
It does exactly what is required.
|
|
|
|
|
|
Inside #123865, we are adding support for the new semantics
for expr2024, but we have noted a performance issue.
We realized there is a redundant check for each
token regarding an edition. This commit moves the edition
check to the end, avoiding some extra checks that
can slow down compilation time.
Link: https://github.com/rust-lang/rust/pull/123865
Co-Developed-by: @eholk
Signed-off-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>
|
|
r=compiler-errors
Reject `CVarArgs` in `parse_ty_for_where_clause`
Fixes #125847. This regressed in #77035 where the `parse_ty` inside `parse_ty_where_predicate` was replaced with the at the time new `parse_ty_for_where_clause` which incorrectly stated it would permit CVarArgs (maybe a copy/paste error).
r? parser
|
|
|
|
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
|
|
|
|
|
|
|
|
Disallow cast with trailing braced macro in let-else
This fixes an edge case I noticed while porting #118880 and #119062 to syn.
Previously, rustc incorrectly accepted code such as:
```rust
let foo = &std::ptr::null as &'static dyn std::ops::Fn() -> *const primitive! {
8
} else {
return;
};
```
even though a right curl brace `}` directly before `else` in a `let...else` statement is not supposed to be valid syntax.
|
|
Make early lints translatable
<del>Requires https://github.com/projectfluent/fluent-rs/pull/353.</del> https://github.com/rust-lang/rust/commit/5134a04eaa32b168cf5998a6ec13199356e2e017
r? diagnostics
|
|
|
