| commit | bbc059572d599a414653e4ac659b4738d434e1f1 | [log] [tgz] |
|---|---|---|
| author | Robert Griesemer <gri@golang.org> | Tue Oct 26 17:07:32 2021 -0700 |
| committer | Robert Griesemer <gri@golang.org> | Wed Oct 27 20:25:06 2021 +0000 |
| tree | 1209e017873e3baa1aca85baadf17ee0b25fba2c | |
| parent | 6a7eb56cd1837b961ea815105235a3fd96fda94b [diff] |
cmd/compile/internal/types2: implement singleType and structure (type) Rename structuralType to singleType throughout. This reflects more closely what the function does: if a type set consists of exactly one type term, singleType returns the corresponding type. Rename singleUnder to structure. The structure function returns the "type structure" of a type, either its underlying type for a non-type parameter, or the single underlying type (if it exists) for a type parameter. Change constraint type inference to use the structure type for inference, unless the structure type is the underlying type of a single defined type, in which case it uses the latter. This preserves existing behavior while making constraint type inference slightly more flexible. Change-Id: I38ee89ffdabd12bfeaa0be2ad6af8fb373c11fc9 Reviewed-on: https://go-review.googlesource.com/c/go/+/359015 Trust: Robert Griesemer <gri@golang.org> Reviewed-by: Robert Findley <rfindley@google.com>
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