Refer to compile_error! by absolute path in token stream produced by syn::Error::to_compile_error (#1431, thanks @smoelius)
2.0.11
Improve error message on empty parens inside parse_nested_meta (#1428)
2.0.10
Fix visibility being parsed incorrectly on macro invocations inside of a trait
2.0.9
Disallow type items in an extern block, trait, or module from being marked default
2.0.8
Treat try keyword as 2015-edition identifier in definition of try macro (#1422)
2.0.7
Fix parsing of mut self inside of Type::BareFn
2.0.6
Improve error message on missing ';' between statements (#1419)
Keep non-brace macro invocations in trailing expr position as Expr::Macro (#1420)
2.0.5
Expose ExprMacro data structure even when features="full" is not used (#1417)
2.0.4
Improve error reporting when parsing identifiers and paths (#1415, #1416)
2.0.3
Expose ExprGroup data structure even when features="full" is not used (#1412)
2.0.2
Documentation improvements
2.0.1
Add methods on syn::Meta for reporting error on an incorrect kind of attribute (#1409)
2.0.0
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.
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Bumps syn from 1.0.109 to 2.0.12.
Release notes
Sourced from syn's releases.
... (truncated)
Commits
42e8686
Release 2.0.12cc7cf99
Absolute path to refer to core crate in compile_error expansion4d1fd26
Merge pull request 1431 from smoelius/compile-error07601a8
Usecore
instead ofstd
7109084
Qualifycompile_error!
c58aceb
Release 2.0.11161be5a
Merge pull request #1428 from dtolnay/emptyattr0b7da96
Improve error message on empty parens inside parse_nested_meta0296180
Update test suite to nightly-2023-03-28e19a0fb
Merge pull request #1425 from dtolnay/alertYou can trigger a rebase of this PR by commenting
@dependabot rebase
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