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cmd/compile/internal/types2: export Structure function 

For #48538.

Change-Id: I258b0c8af5801692ad238e47397dde0b4e3c44c1
Reviewed-on: https://go-review.googlesource.com/c/go/+/359275
Trust: Robert Griesemer <gri@golang.org>
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Dan Scales <danscales@google.com>
This commit is contained in:
Robert Griesemer 2021-10-27 17:28:36 -07:00
parent a91d0b649c
commit 12dc48fd54
1 changed files with 10 additions and 0 deletions
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10
src/cmd/compile/internal/types2/builtins.go
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@ -767,6 +767,16 @@ func (check *Checker) builtin(x *operand, call *syntax.CallExpr, id builtinId) (
return true
}
// Structure is exported for the compiler.
// If typ is a type parameter, Structure returns the single underlying
// type of all types in the corresponding type constraint if it exists,
// or nil otherwise. If typ is not a type parameter, Structure returns
// the underlying type.
func Structure(typ Type) Type {
return structure(typ)
}
// If typ is a type parameter, structure returns the single underlying
// type of all types in the corresponding type constraint if it exists,
// or nil otherwise. If typ is not a type parameter, structure returns