ab0bb52f2f
This is a port of CL 402256 from the syntax package to go/parser with adjustments because of the different AST structure, and excluding any necessary go/printer changes (separate CL). Type parameter lists starting with the form [name *T|...] or [name (X)|...] may look like an array length expression [x]. Only after parsing the entire initial expression and checking whether the expression contains type elements or is followed by a comma can we make the final decision. This change simplifies the existing parsing strategy: instead of trying to make an upfront decision with limited information (which is insufficient), the parser now parses the start of a type parameter list or array length specification as expression. In a second step, if the expression can be split into a name followed by a type element, or a name followed by an ordinary expression which is succeeded by a comma, we assume a type parameter list (because it can't be an array length). In all other cases we assume an array length specification. Fixes #52559. Change-Id: I11ab6e62b073b78b2331bb6063cf74d2a9eaa236 Reviewed-on: https://go-review.googlesource.com/c/go/+/403937 Run-TryBot: Robert Griesemer <gri@google.com> Reviewed-by: Robert Findley <rfindley@google.com> Reviewed-by: Robert Griesemer <gri@google.com> |
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README.md
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