fix(deps): update rust crate syn to v2 #293

Support parsing unnamed C varargs within function pointer types (#1711)
Improve synthesized error message on unexpected tokens at the end of the expected contents of a delimited group (#1713)
Support parsing unstable tail call syntax (#1714, https://github.com/rust-lang/rust/issues/112788)
Add Fields::members iterator (#1716, thanks @Fancyflame)

`v2.0.72`

Compare Source

Parse use<'a, T> precise capturing bounds (#1707, thanks @compiler-errors)

`v2.0.71`

Compare Source

Do not require mutable borrow in Punctuated::get() (#1706, thanks @lemunozm)

`v2.0.70`

Compare Source

Improve parenthesization of closures, jumps, ranges, chained comparisons, and let (#1694, #1695, #1698, #1699, #1700)

`v2.0.69`

Compare Source

Correctly parenthesize labeled loops inside a break value (#1692)
Add Punctuated::get and get_mut (#1693)

`v2.0.68`

Compare Source

Improve panic location when parse_quote! parses invalid syntax (#1690, thanks @stepancheg)
More efficient peek implementation for Group and Lifetime (#1687)

`v2.0.67`

Compare Source

Produce more accurate error message locations for errors located at the end of a nested group (#1679, #1680)
Support peeking LitCStr in ParseStream::peek (#1682)

`v2.0.66`

Compare Source

Allow braced structs when parsing ExprLet (#1671)

`v2.0.65`

Compare Source

Optimize the implementation of Fold to compile faster (#1666, #1667, #1668)

`v2.0.64`

Compare Source

Support using ParseBuffer across catch_unwind (#1646)
Validate that the expression in a let-else ends in brace as required by rustc (#1648, #1649)
Legalize invalid const generic arguments by wrapping in braces (#1654, #1655)
Fix some expression precedence edge cases involving break and return in loop headers (#1656)
Always print closure bodies with a brace when the closure has an explicit return type (#1658)
Automatically insert necessary parentheses in ToTokens for Expr when required by expression precedence (#1659)
Support struct literal syntax in match guard expressions (#1662)

`v2.0.63`

Compare Source

Parse and print long if-else-if chains without reliance on deep recursion to avoid overflowing stack (#1644, #1645)

`v2.0.62`

Compare Source

Reject invalid unparenthesized range and comparison operator expressions (#1642, #1643)

`v2.0.61`

Compare Source

Check for legal binding name in the ident of Pat::Ident (#1627)
Resolve unexpected_cfgs warning (#1635)

`v2.0.60`

Compare Source

Improve how None-delimited groups are counted by peek (#1625)

`v2.0.59`

Compare Source

Parse c"…" and cr"…" C-string literal syntax as Lit::CStr (#1502)

`v2.0.58`

Compare Source

Support $ in custom_punctuation! macro (#1611)

`v2.0.57`

Compare Source

Eliminate dependency on quote when built with default-features disabled and the "proc-macro" feature enabled (#1608, thanks @BD103)

`v2.0.56`

Compare Source

Apply RUSTC_WORKSPACE_WRAPPER when deciding whether to run nightly-only tests (#1605)

`v2.0.55`

Compare Source

Restore compatibility with rustc 1.56 through 1.59 (#1603)

`v2.0.54`

Compare Source

Fix dead code warning in generated code when using custom_keyword! with syn's "printing" feature disabled (#1602)

`v2.0.53`

Compare Source

Implement Copy, Clone, and ToTokens for syn::parse::Nothing (#1597)

`v2.0.52`

Compare Source

Add an expression parser that uses match-arm's boundary rules (#1593)

`v2.0.51`

Compare Source

Resolve non_local_definitions warnings in generated code under rustc 1.78-nightly

`v2.0.50`

Compare Source

Fix unused_imports warnings when compiled by rustc 1.78

`v2.0.49`

Compare Source

Improve error location when parsing from an empty string literal using LitStr::parse (#1590)

`v2.0.48`

Compare Source

Improve error message on unexpected token after else (#1578)

`v2.0.47`

Compare Source

Improve error messages related to proc_macro::LexError (#1575)

`v2.0.46`

Compare Source

Update proc-macro2 to fix caching issue when using a rustc-wrapper such as sccache

`v2.0.45`

Compare Source

Parse unsupported expressions in enum discriminants of DeriveInput as Expr::Verbatim in non-"full" mode, instead of error (#1513)
Support parsing PatType with parse_quote! (#1573)

`v2.0.44`

Compare Source

Documentation improvements

`v2.0.43`

Compare Source

Insert trailing comma if not already present when printing a 1-tuple in pattern position (#1553)

`v2.0.42`

Compare Source

Documentation improvements

`v2.0.41`

Compare Source

Support parsing syn::Field in parse_quote! (#1548)

`v2.0.40`

Compare Source

Fix some edge cases of handling None-delimited groups in expression parser (#1539, #1541, #1542, #1543, #1544, #1545)

`v2.0.39`

Compare Source

Fix parsing of return expression in match guards (#1528)
Improve error message on labeled loop as value expression for break (#1531)

`v2.0.38`

Compare Source

Fix "method 'peek' has an incompatible type for trait" error when defining bool as a custom keyword (#1518, thanks @Vanille-N)

`v2.0.37`

Compare Source

Work around incorrect future compatibility warning in rustc 1.74.0-nightly

`v2.0.36`

Compare Source

Restore compatibility with --generate-link-to-definition documentation builds (#1514)

`v2.0.35`

Compare Source

Make rust-analyzer produce preferred brackets for invocations of Token! macro (#1510, #1512)

`v2.0.34`

Compare Source

Documentation improvements

`v2.0.33`

Compare Source

Special handling for the (/*ERROR*/) placeholder that rustc uses for macros that fail to expand

`v2.0.32`

Compare Source

Add Path::require_ident accessor (#1496, thanks @Fancyflame)

Fix inconsistency between full and non-full expression parse errors (#1491)

`v2.0.27`

Compare Source

Documentation improvements (thanks @GuillaumeGomez)

`v2.0.26`

Compare Source

Implement Spanned for QSelf (#1465)

`v2.0.25`

Compare Source

Support single identifier as unbraced const generic argument (#1483)
Produce error message when LitStr::parse is used on a suffixed string literal (#1484)

`v2.0.24`

Compare Source

Fix duplication of braces around const generic argument in non-full mode (#1482)

`v2.0.23`

Compare Source

Preserve attributes on verbatim Item in statement position (#1476)
Support generic_const_exprs where-clauses such as where [(); { T::COUNT }]: in non-"full" mode (#1478)

`v2.0.22`

Compare Source

Parse c"…" c-string literals (tracking issue: https://github.com/rust-lang/rust/issues/105723)

`v2.0.21`

Compare Source

Fix value computed by LitByteStr::value in the case of a cooked byte string literal containing form feed or vertical tab characters following an escaped newline (#1474)

`v2.0.20`

Compare Source

Documentation improvements

`v2.0.19`

Compare Source

Improve rendering of compile errors within 2015-edition code calling a 2018+ edition proc macro (#1467, thanks @danielhenrymantilla)

`v2.0.18`

Compare Source

Permit empty attr in syn::meta::parser (#1460)

`v2.0.17`

Compare Source

Enable proc_macro support on wasm targets (#1459)

`v2.0.16`

Compare Source

Parse builtin # syntax as Expr::Verbatim (https://github.com/rust-lang/rust/issues/110680, #1454)

`v2.0.15`

Compare Source

Ensure Type::Tuple of length 1 prints as a tuple even if trailing comma is not provided in the Punctuated (#1444, thanks @Fancyflame)

`v2.0.14`

Compare Source

Add Punctuated::pop_punct() (#1442, thanks @programmerjake)

`v2.0.13`

Compare Source

Improve spans of Expr::Field parsed from a float Literal (#1433, #1436)

`v2.0.12`

Compare Source

Refer to compile_error! by absolute path in token stream produced by syn::Error::to_compile_error (#1431, thanks @smoelius)

`v2.0.11`

Compare Source

Improve error message on empty parens inside parse_nested_meta (#1428)

`v2.0.10`

Compare Source

Fix visibility being parsed incorrectly on macro invocations inside of a trait

`v2.0.9`

Compare Source

Disallow type items in an extern block, trait, or module from being marked default
Disallow ImplItemFn from having an omitted function body, as in impl T { fn f(&self); } — omitted function bodies are allowed by TraitItemFn, but in impl blocks this syntax is now parsed as ImplItem::Verbatim rather than ImplItem::Fn

`v2.0.8`

Compare Source

Treat try keyword as 2015-edition identifier in definition of try macro (#1422)

`v2.0.7`

Compare Source

Fix parsing of mut self inside of Type::BareFn

`v2.0.6`

Compare Source

Improve error message on missing ';' between statements (#1419)
Keep non-brace macro invocations in trailing expr position as Expr::Macro (#1420)

`v2.0.5`

Compare Source

Expose ExprMacro data structure even when features="full" is not used (#1417)

`v2.0.4`

Compare Source

Improve error reporting when parsing identifiers and paths (#1415, #1416)

`v2.0.3`

Compare Source

Expose ExprGroup data structure even when features="full" is not used (#1412)

`v2.0.2`

Compare Source

Documentation improvements

`v2.0.1`

Compare Source

Add methods on syn::Meta for reporting error on an incorrect kind of attribute (#1409)

`v2.0.0`

Compare Source

This release contains a batch of syntax tree improvements to incorporate ongoing Rust language development from the past 3.5 years since syn 1.

It never seems like an ideal time to finalize a syntax tree design, considering the frankly alarming number of syntax-disrupting language features currently in flight: keyword generics, restrictions, capabilities and contexts, conditional constness, new varieties of literals, dyn revamp such as explicitly dyn-safe traits and dyn-star, expression syntax in various phases of being added or being torn out (const blocks, try blocks, raw references), auto traits and negative impls, generalizations to higher rank trait bounds, async closures and static async trait methods, postfix keywords, pattern types, return type notation, unsafe attributes, …

The plan continues to be the same as laid out originally in the 1.0.0 release announcement:

Be aware that the underlying Rust language will continue to evolve. Syn is able to accommodate most kinds of Rust grammar changes via the nonexhaustive enums and Verbatim variants in the syntax tree, but we will plan to put out new major versions on a 12 to 24 month cadence to incorporate ongoing language changes as needed.

If anything, the takeaway from the 3.5 year longevity of syn 1 is that this period was tamer from a language development perspective than anticipated, but that is unlikely to last and I think around 24 months is still the correct cadence to expect between releases going forward.

[API documentation for 2.0]

Breaking changes

Minimum required Rust version is raised from rustc 1.31 to 1.56.

Expressions

Support for box expr syntax has been deleted, as it has been deleted recently from rustc.
Support for type ascription syntax expr: Type in expression position has been deleted.
Support for unstable &raw const expr raw-pointer reference syntax has been deleted.
The representation of generic arguments has been unified between method calls and non-method paths into a single GenericArgument type, which supersedes the previous GenericMethodArgument and MethodTurbofish.
Generic arguments now distinguish between associated types (AssocType) and associated constant values (AssocConst). Previously these would be parsed ambiguously as Binding.
The binary assignment operators in BinOp have been renamed to align with the naming used by the standard library's core::ops module's traits. For example BinOp::AddEq is now called BinOp::AddAssign.
Expr::Struct struct construction expressions now support structs which are a variant of an enum associated type of a trait, as in <Type as Trait>::Assoc::Variant { ... }, which has recently been added to Rust.
Expr::Range now follows the start and end naming used by the standard library's RangeBounds trait, rather than from/to or lo/hi.
Expr::AssignOp has been merged into Expr::Binary, which now represents both non-assignment and assignment binary operators.
Stricter parsing of ranges. None of the following are valid expressions, but were previously accepted by syn: ..=, lo..=, ..., ...hi, lo..., lo...hi.
Expr::Closure now includes a representation for for<...> lifetimes.

Statements

Variants Stmt::Expr (tail-position expression without trailing semicolon) and Stmt::Semi (non-tail expression with trailing semicolon) have been combined into Stmt::Expr with the optional semicolon represented by Option<Token![;]>.
The syntax tree for Stmt::Local has been extended to handle let/else syntax.
Macros in statement position are now uniformly parsed as Stmt::Macro. Previously these would be disambiguated to Stmt::Item, although it was ambiguous whether a macro in statement position would expand to an item (like thread_local! { ... }) vs an expression (like println! { ... }).

Patterns

Pattern parsing for all the different syntactic positions in which patterns are allowed has been split into Pat::parse_single (for function- and closure-argument position, where top-level | is not allowed), Pat::parse_multi (where | is allowed) and Pat::parse_multi_with_leading_vert (for the pattern of match arms, which allow an optional leading |). Previously only a single parse behavior was supported and behaved like the new parse_single.
The Pat syntax tree now shares more common data structures with the Expr syntax tree where possible, such as for literals, paths, macros, and ranges in pattern position.
Parsing of struct field patterns does a better job rejecting bogus syntax such as Struct { 0 asdf } and Struct { ref mut 0: asdf }, which were previously incorrectly accepted.
Pat::Range now supports one-sided ranges by representing the start and end bound of the range by Option<Expr>.
Pat::Struct keeps track of attributes on the optional .. "rest" part of the pattern, as in let Struct { x, #[cfg(any())] .. } = _;.
Parsing unary negation now enforces that only literal patterns can be unarily negated. For example -self::CONST and -const { 0i32 } are not valid syntax in pattern position.
Pat::TupleStruct no longer wraps a value of type PatTuple but represents that information in its fields directly.
A single parenthesized pattern without trailing comma inside the parentheses is no longer considered a Pat::Tuple, it will be parsed as Pat::Paren.
One-sided range patterns are no longer allowed inside of slice patterns. [lo..] and [..=hi] are not considered valid pattern syntax by Rust.

Items

Typed self in a method signature, such as self: Pin<&mut Self>, will now be parsed as FnArg::Receiver. This means self, whether with or without an explicit type, is always treated as a Receiver. Previously only the &self and &mut self shorthand receivers were parsed as Receiver.
TraitItem::Method and ImplItem::Method have been renamed to TraitItem::Fn and ImplItem::Fn, as they do not necessarily represent methods if the function signature contains no self.
Item::Macro2 has been deleted as "macros 2.0" syntax is no longer considered on track for stabilization.
Various item kinds now hold Generics which didn't used to have them.
The variadic argument of an extern function signature can now be given an optional parameter name.
WherePredicate::Eq is no longer supported.
Visibility::Crate is no longer supported. This syntax has been removed from rustc.
Public visibility is now represented by a single Token![pub] token rather than the old VisPublic struct.
LifetimeDef is now called LifetimeParam. This name makes more sense in the context of the GenericParam enum (which also includes TypeParam and ConstParam), and is the name that the Rust Reference uses.
Modules and extern blocks (Item::Mod and Item::ForeignMod) can now be marked unsafe.

Attributes

The syntax tree for Attribute has been redesigned. The new API better accommodates attributes which mix structured and unstructured content at different levels of nesting.
AttributeArgs has been removed. Use Punctuated<Meta, Token![,]>.
For parsing attribute contents, parse_meta() is superseded by a new parsing library called syn::meta, and the parse_nested_meta method on Attribute.

Tokens

In string literals, the handling of non-ASCII whitespace after trailing \ now matches what is implemented by rustc. Space, horizontal tab, line feed, and carriage return are the only 4 whitespace characters which are supposed to be stripped from the beginning of the next line.
The delimiter tokens syn::token::Paren, Bracket, and Brace now store 2 spans (the open and close punctuation separately) rather than just 1. Use .join() to obtain a single Span spanning the whole group.
Keyword construction now requires a single span; an array of 1 span is no longer accepted. Use Token![trait](span) instead of Token![trait]([span]).
Some token types have been renamed to conform with terminology used by the Rust Reference. These are Add->Plus, Bang->Not, Colon2->PathSep, Div->Slash, Dot2->DotDot, Dot3->DotDotDot, Rem->Percent, and Sub->Minus.

More

Several enums have been made #[non_exhaustive] in anticipation of upcoming language changes. This includes WherePredicate, Lit, and GenericArgument.
The impl Extend<Pair<T, P>> for Punctuated<T, P> now requires P: Default and will push a default punctuation between the pre-existing elements and the new ones, if there is not already a trailing punctuation. Previously it would panic in this situation.
ParseStream::parse_terminated now takes a peek-style punctuation argument instead of turbofish. Replace input.parse_terminated::<_, Token![,]>(Thing::parse) with input.parse_terminated(Thing::parse, Token![,]).

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

If you want to rebase/retry this PR, check this box

This PR was generated by Mend Renovate. View the repository job log.

renovate bot force-pushed the renovate/syn-2.x branch from 907f711 to aaef52e Compare June 3, 2023 22:34

renovate bot force-pushed the renovate/syn-2.x branch 7 times, most recently from 2f5f051 to 7f945e5 Compare July 31, 2023 15:55

renovate bot force-pushed the renovate/syn-2.x branch from 7f945e5 to e81719a Compare April 23, 2024 19:08

renovate bot force-pushed the renovate/syn-2.x branch from e81719a to 5f4430c Compare May 1, 2024 10:47

renovate bot changed the title ~~fix(deps): update rust crate syn to v2~~ fix(deps): update rust crate syn to v2.0.60 May 1, 2024

renovate bot force-pushed the renovate/syn-2.x branch from 5f4430c to 2ed3dba Compare May 5, 2024 11:08

renovate bot changed the title ~~fix(deps): update rust crate syn to v2.0.60~~ fix(deps): update rust crate syn to v2 May 5, 2024

renovate bot force-pushed the renovate/syn-2.x branch from 2ed3dba to a6a97fb Compare June 23, 2024 16:21

renovate bot force-pushed the renovate/syn-2.x branch 6 times, most recently from 89ba8ce to 20e58dc Compare July 14, 2024 21:12

renovate bot force-pushed the renovate/syn-2.x branch from 20e58dc to 6ebd307 Compare August 4, 2024 01:59

fix(deps): update rust crate syn to v2

cb24bca

renovate bot force-pushed the renovate/syn-2.x branch from 6ebd307 to cb24bca Compare August 4, 2024 10:21

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

fix(deps): update rust crate syn to v2 #293

fix(deps): update rust crate syn to v2 #293

renovate bot commented Mar 18, 2023 •

edited

Loading

fix(deps): update rust crate syn to v2 #293

Are you sure you want to change the base?

fix(deps): update rust crate syn to v2 #293

Conversation

renovate bot commented Mar 18, 2023 • edited Loading

Release Notes

Breaking changes

Expressions

Statements

Patterns

Items

Attributes

Tokens

More

Configuration

renovate bot commented Mar 18, 2023 •

edited

Loading