Like switch cases, a catch clause may now include a comma-
separated list of patterns. The body will be executed if any
one of those patterns is matched.
This patch replaces `CatchStmt` with `CaseStmt` as the children
of `DoCatchStmt` in the AST. This necessitates a number of changes
throughout the compiler, including:
- Parser & libsyntax support for the new syntax and AST structure
- Typechecking of multi-pattern catches, including those which
contain bindings.
- SILGen support
- Code completion updates
- Profiler updates
- Name lookup changes
The `@transpose(of:)` attribute registers a function as a transpose of another
function. This patch adds the `@transpose(of:)` attribute definition, syntax,
parsing, and printing.
Resolves TF-827.
Todos:
- Type-checking (TF-830, TF-1060).
- Enable serialization (TF-838).
- Use module-qualified names instead of custom qualified name syntax/parsing
(TF-1066).
The `@derivative(of:)` attribute registers a function as a derivative of another
function. This patch adds the `@derivative(of:)` attribute definition, syntax,
parsing, and printing.
Resolves TF-826.
Todos:
- Type-checking (TF-829).
- Serialization (TF-837).
This PR introduces `@differentiable` attribute to mark functions as differentiable. This PR only contains changes related to parsing the attribute. Type checking and other changes will be added in subsequent patches.
See https://github.com/apple/swift/pull/27506/files#diff-f3216f4188fd5ed34e1007e5a9c2490f for examples and tests for the new attribute.
The node descriptions are printed as dedented multi-line strings when
the corresponding files are being generated in SwiftSyntax. To do this,
however, the strings need to be multi-line to begin with and not have
the line break escaped.
To represent a type with code completion.
type? '.'? <code-completion-token>
This is "parser only" node which is not exposed to SwiftSyntax.
Using this, defer to set the parsed type to code-completion callbacks.
- Stop producing 'backtick' trivia for escaping identifier token. '`'s
are now parts of the token text
- Adjust and simplify C++ libSyntax APIs
- Add 'is_deprecated' property to Trivia.py to attribute SwiftSyntax
APIs
rdar://problem/54810608
* typo: `InoutToken` not `InOutToken`
* Use `EllipsisToken` like function parameters. Otherwise `,` is stored
at ellipsis position.
rdar://problem/52291805
For invalid code, lexer is forgiving enough to allow single quote '\'' as the starting point
of string literals. Later, parser assumes the string literals are always using double quote "\"", and passes
such knowledge to SwiftSyntax side, leading to the round-trip failure we observed in the radar.
This commit fixes the issue by introducing another token kind for single quote.
rdar://51071021
