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nodes in statement position.
Extended #[cfg] folder to allow removal of statements, and
of expressions in optional positions like expression lists and trailing
block expressions.
Extended lint checker to recognize lint levels on expressions and
locals.
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Just `sed s/_nopanic//g`. Hopefully makes libsyntax a bit more
readable.
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Just `sed s/_nopanic//g`. Hopefully makes libsyntax a bit more
readable.
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[breaking change]
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Make sure Name, SyntaxContext and Ident are passed by value
Make sure Idents don't serve as keys (or parts of keys) in maps, Ident comparison is not well defined
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Closes #28527.
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Avoid confusion with binary integer literals and binary operator expressions in libsyntax
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This basically only affects modules which are empty (or only contain comments).
Closes #26755
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This changes the `ToTokens` implementations for expressions, statements,
etc. with almost-trivial ones that produce `Interpolated(*Nt(...))`
pseudo-tokens. In this way, quasiquote now works the same way as macros
do: already-parsed AST fragments are used as-is, not reparsed.
The `ToSource` trait is removed. Quasiquote no longer involves
pretty-printing at all, which removes the need for the
`encode_with_hygiene` hack. All associated machinery is removed.
A new `Nonterminal` is added, NtArm, which the parser now interpolates.
This is just for quasiquote, not macros (although it could be in the
future).
`ToTokens` is no longer implemented for `Arg` (although this could be
added again) and `Generics` (which I don't think makes sense).
This breaks any compiler extensions that relied on the ability of
`ToTokens` to turn AST fragments back into inspectable token trees. For
this reason, this closes #16987.
As such, this is a [breaking-change].
Fixes #16472.
Fixes #15962.
Fixes #17397.
Fixes #16617.
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Changes the style guidelines regarding unit tests to recommend using a
sub-module named "tests" instead of "test" for unit tests as "test"
might clash with imports of libtest.
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Conflicts:
src/libcore/result.rs
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This commit removes all the old casting/generic traits from `std::num` that are
no longer in use by the standard library. This additionally removes the old
`strconv` module which has not seen much use in quite a long time. All generic
functionality has been supplanted with traits in the `num` crate and the
`strconv` module is supplanted with the [rust-strconv crate][rust-strconv].
[rust-strconv]: https://github.com/lifthrasiir/rust-strconv
This is a breaking change due to the removal of these deprecated crates, and the
alternative crates are listed above.
[breaking-change]
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It was an oversight that this was not done in the great int upheaval.
[breaking-change]
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- Functions in parser.rs return PResult<> rather than panicing
- Other functions in libsyntax call panic! explicitly for now if they rely on panicing behaviour.
- 'panictry!' macro added as scaffolding while converting panicing functions.
(This does the same as 'unwrap()' but is easier to grep for and turn into try!())
- Leaves panicing wrappers for the following functions so that the
quote_* macros behave the same:
- parse_expr, parse_item, parse_pat, parse_arm, parse_ty, parse_stmt
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Conflicts:
src/libsyntax/parse/lexer/mod.rs
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This commit stabilizes the `std::num` module:
* The `Int` and `Float` traits are deprecated in favor of (1) the
newly-added inherent methods and (2) the generic traits available in
rust-lang/num.
* The `Zero` and `One` traits are reintroduced in `std::num`, which
together with various other traits allow you to recover the most
common forms of generic programming.
* The `FromStrRadix` trait, and associated free function, is deprecated
in favor of inherent implementations.
* A wide range of methods and constants for both integers and floating
point numbers are now `#[stable]`, having been adjusted for integer
guidelines.
* `is_positive` and `is_negative` are renamed to `is_sign_positive` and
`is_sign_negative`, in order to address #22985
* The `Wrapping` type is moved to `std::num` and stabilized;
`WrappingOps` is deprecated in favor of inherent methods on the
integer types, and direct implementation of operations on
`Wrapping<X>` for each concrete integer type `X`.
Closes #22985
Closes #21069
[breaking-change]
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Previously 0b12 was considered two tokens, 0b1 and 2, as 2 isn't a valid
base 2 digit. This patch changes that to collapse them into one (and
makes `0b12` etc. an error: 2 isn't a valid base 2 digit).
This may break some macro invocations of macros with `tt` (or syntax
extensions) that rely on adjacent digits being separate tokens and hence
is a
[breaking-change]
The fix is to separate the tokens, e.g. `0b12` -> `0b1 2`.
cc https://github.com/rust-lang/rfcs/pull/879
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This commit removes all parsing, resolve, and compiler support for the old and
long-deprecated int/uint types.
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The compiler will now issue a warning for crates that have syntax of the form
`extern crate "foo" as bar`, but it will still continue to accept this syntax.
Additionally, the string `foo-bar` will match the crate name `foo_bar` to assist
in the transition period as well.
This patch will land hopefully in tandem with a Cargo patch that will start
translating all crate names to have underscores instead of hyphens.
cc #23533
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[breaking-change]: instead of a closure like `|| -> i32 22`, prefer `||
-> i32 { 22 }`.
Fixes #23420.
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Most of the changes are cleanup facilitated by straight-forward attribute handling.
This is a minor [breaking-change] for users of `quote_stmt!` (returns `Option<P<Stmt>>` now) and some of the public methods in `Parser` (a few `Vec<Attribute>` arguments/returns were removed).
r? @nikomatsakis
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passing the latter around.
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When warnings and errors occur, the associated help message should not print the same code snippet.
https://github.com/rust-lang/rust/issues/21938
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This commit deprecates the majority of std::old_io::fs in favor of std::fs and
its new functionality. Some functions remain non-deprecated but are now behind a
feature gate called `old_fs`. These functions will be deprecated once
suitable replacements have been implemented.
The compiler has been migrated to new `std::fs` and `std::path` APIs where
appropriate as part of this change.
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This allows to create proper debuginfo line information for items inlined from other crates (e.g. instantiations of generics).
Only the codemap's 'metadata' is stored in a crate's metadata. That is, just filename, line-beginnings, etc. but not the actual source code itself. We are thus missing the opportunity of making Rust the first "open-source-only" programming language out there. Pity.
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where possible.
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Conflicts:
src/libcollections/slice.rs
src/libcollections/str.rs
src/librustc/middle/lang_items.rs
src/librustc_back/rpath.rs
src/librustc_typeck/check/regionck.rs
src/libstd/ffi/os_str.rs
src/libsyntax/diagnostic.rs
src/libsyntax/parse/parser.rs
src/libsyntax/util/interner.rs
src/test/run-pass/regions-refcell.rs
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