dependabot[bot] opened a new pull request, #10391: URL: https://github.com/apache/arrow-rs/pull/10391
Bumps [syn](https://github.com/dtolnay/syn) from 2.0.119 to 3.0.2. <details> <summary>Release notes</summary> <p><em>Sourced from <a href="https://github.com/dtolnay/syn/releases";>syn's releases</a>.</em></p> <blockquote> <h2>3.0.2</h2> <ul> <li>Add <a href="https://docs.rs/syn/3/syn/struct.Error.html#method.new_range";><code>Error::new_range(start..end, "msg")</code></a> (<a href="https://redirect.github.com/dtolnay/syn/issues/2068";>#2068</a>, <a href="https://redirect.github.com/dtolnay/syn/issues/2070";>#2070</a>)</li> <li>Add <a href="https://docs.rs/syn/3/syn/buffer/struct.Cursor.html#method.prev_span";><code>Cursor::prev_span</code></a></li> </ul> <h2>3.0.1</h2> <ul> <li>Parse const traits (<a href="https://redirect.github.com/dtolnay/syn/issues/2056";>#2056</a>, <a href="https://redirect.github.com/dtolnay/syn/issues/2057";>#2057</a>, <a href="https://redirect.github.com/dtolnay/syn/issues/2058";>#2058</a>, <a href="https://redirect.github.com/dtolnay/syn/issues/2063";>#2063</a>, <a href="https://redirect.github.com/dtolnay/syn/issues/2064";>#2064</a>)</li> <li>Parse unsafe binder types (<a href="https://redirect.github.com/dtolnay/syn/issues/2065";>#2065</a>)</li> <li>Parse impl restrictions (<a href="https://redirect.github.com/dtolnay/syn/issues/2066";>#2066</a>)</li> </ul> <h2>3.0.0</h2> <p>This release contains adjustments to the syntax tree to account for ongoing Rust language development from the 3 years since syn 2.0.0 and to anticipate some in-flight Rust language RFCs.</p> <p>These include: default values in fields, pinned type sugar, raw lifetimes, generator blocks and functions, unnamed enum variants, attributes in tuple types and tuple patterns, named arguments in parenthesized generic argument lists, lightweight clones, const traits, const function pointers, mutability restricted fields, supertrait auto implementation, final associated functions, trait implementability restrictions, const blocks in path arguments, item-level const blocks, return type notation, never patterns, function delegation, mutable by-reference bindings, in-place initialization, field projections, explicitly dyn-compatible traits, view types, file-level frontmatter, generic const arguments, guard patterns, lazy type aliases, explicitly safe foreign items, super let, unsafe fields, pattern types, heterogeneous try-blocks, function contracts, async function trait bounds, static closure coroutine syntax, unsafe binder types, move expressions, for-await loops, and postfix keyw ords.</p> <!-- raw HTML omitted --> <!-- raw HTML omitted --> <h1>Breaking changes</h1> <h2>Modifiers</h2> <p>To reserve more room for language evolution, there are 10 new non-exhaustive structs in the syntax tree having the following commonality:</p> <ul> <li> <p>Name ending in <code>Modifiers</code>. {<code>BlockModifiers</code>, <code>ClosureModifiers</code>, <code>ConstModifiers</code>, <code>FieldModifiers</code>, <code>FnModifiers</code>, <code>ImplModifiers</code>, <code>LocalModifiers</code>, <code>TraitBoundModifiers</code>, <code>TraitModifiers</code>, <code>TypeModifiers</code>}</p> </li> <li> <p>Each implements <code>Default</code>. The default value is guaranteed to comprise no tokens.</p> </li> <li> <p>Non-exhaustive. Can only be instantiated by Syn's parser or by creating and then mutating <code>▁▁Modifiers::default()</code>.</p> </li> <li> <p>Does not implement <code>Parse</code>. When parsing, they are parsed by the enclosing syntax tree node.</p> </li> <li> <p>Does not implement <code>ToTokens</code>. In some cases the syntax that these nodes might hold in the future is not necessarily contiguous tokens.</p> </li> <li> <p>Provides <code>.require_empty() -> Result<()></code> which returns a meaningfully spanned error if the modifiers are different from the empty default. This enables a caller to reject syntax it does not recognize without knowing what that syntax may be.</p> </li> </ul> <h2>Types</h2> <ul> <li> <p><code>Type::BareFn</code> has been renamed to <code>Type::FnPtr</code> to mirror the compiler's terminology. Together with this, <code>BareVariadic</code> is renamed to <code>FnPtrVariadic</code>.</p> </li> <li> <p>The mutually exclusive <code>const_token</code> and <code>mutability</code> fields of <code>Type::Ptr</code> have been unified into an enum of type <code>PointerMutability</code>, which was already previously used by <code>Expr::RawAddr</code>.</p> </li> <li> <p>Every <code>Type</code> variant now holds attributes, which can represent the attributes of element types inside a tuple type, or attributes for a function return type.</p> </li> <li> <p><code>BareFnArg</code> is renamed to <code>NamedArg</code> and is used in <code>ParenthesizedGenericArguments</code>, in addition to the existing use in <code>Type::FnPtr</code>.</p> </li> </ul> <h2>Expressions</h2> <ul> <li>In <code>Expr::Closure</code>, the fields <code>or1_token</code> and <code>or2_token</code> have been renamed to <code>inputs_begin</code> and <code>inputs_end</code> to indicate the beginning and ending <code>|</code> token of the closure inputs.</li> </ul> <!-- raw HTML omitted --> </blockquote> <p>... (truncated)</p> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/dtolnay/syn/commit/88ee7be2197e61d6e84f0bff38eb2fe57998a765";><code>88ee7be</code></a> Release 3.0.2</li> <li><a href="https://github.com/dtolnay/syn/commit/587bc203a0e975e8261a65791203e8912edb1c42";><code>587bc20</code></a> Merge pull request <a href="https://redirect.github.com/dtolnay/syn/issues/2070";>#2070</a> from dtolnay/emptyrange</li> <li><a href="https://github.com/dtolnay/syn/commit/96801f717ed1ae7943182afe1fd4c5857c50428b";><code>96801f7</code></a> Allow Error::new_range at empty cursor range</li> <li><a href="https://github.com/dtolnay/syn/commit/9dc16c94cf0468dc4e4b1f6011cfd4040246c06c";><code>9dc16c9</code></a> Merge pull request <a href="https://redirect.github.com/dtolnay/syn/issues/2069";>#2069</a> from dtolnay/prevspan</li> <li><a href="https://github.com/dtolnay/syn/commit/1db76b7ba3f4e16430e6b2c96f160c05160e056e";><code>1db76b7</code></a> Align on using impl trait across all Error constructors</li> <li><a href="https://github.com/dtolnay/syn/commit/bfa1ebf336f5fae0a0a22a89aeb991e2cd96c65a";><code>bfa1ebf</code></a> Make Cursor::prev_span public</li> <li><a href="https://github.com/dtolnay/syn/commit/c6ac5e57086963d9fe549ea1576d062f30b1ae32";><code>c6ac5e5</code></a> Merge pull request <a href="https://redirect.github.com/dtolnay/syn/issues/2068";>#2068</a> from dtolnay/newrange</li> <li><a href="https://github.com/dtolnay/syn/commit/143645404be46202362a576650f2e1f8d56ae086";><code>1436454</code></a> Add Error::new_range constructor taking Range<Cursor></li> <li><a href="https://github.com/dtolnay/syn/commit/123c1485eaa5cb6db1034711136a0d65b17e7f0a";><code>123c148</code></a> Release 3.0.1</li> <li><a href="https://github.com/dtolnay/syn/commit/bc11dddf65ebc8a1398f5ad9d0e1a1b4e9a1e9cf";><code>bc11ddd</code></a> Merge pull request <a href="https://redirect.github.com/dtolnay/syn/issues/2067";>#2067</a> from dtolnay/fastpeek</li> <li>Additional commits viewable in <a href="https://github.com/dtolnay/syn/compare/2.0.119...3.0.2";>compare view</a></li> </ul> </details> <br /> [](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores) Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. 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