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go/gcimporter15: backport interface embedding support

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Backports golang.org/cl/38392 from go/internal/gcimporter.

Updates golang/go#16369.

Change-Id: Ic805f96e6565590987a5dae9f0f76c206fceab05
Reviewed-on: https://go-review.googlesource.com/38429
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
This commit is contained in:
Matthew Dempsky 2017-03-21 15:15:34 -07:00
parent 23ca8a2633
commit b08393ce6d
2 changed files with 6 additions and 5 deletions
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9
go/gcimporter15/bimport.go
View File

@ -493,12 +493,13 @@ func (p *importer) typ(parent *types.Package) types.Type {
p.record(nil)
}
// no embedded interfaces with gc compiler
if p.int() != 0 {
errorf("unexpected embedded interface")
var embeddeds []*types.Named
for n := p.int(); n > 0; n-- {
p.pos()
embeddeds = append(embeddeds, p.typ(parent).(*types.Named))
}
t := types.NewInterface(p.methodList(parent), nil)
t := types.NewInterface(p.methodList(parent), embeddeds)
if p.trackAllTypes {
p.typList[n] = t
}

2
go/gcimporter15/gcimporter_test.go
View File

@ -249,7 +249,7 @@ var importedObjectTests = []struct {
}{
{"math.Pi", "const Pi untyped float"},
{"io.Reader", "type Reader interface{Read(p []byte) (n int, err error)}"},
{"io.ReadWriter", "type ReadWriter interface{Read(p []byte) (n int, err error); Write(p []byte) (n int, err error)}"},
{"io.ReadWriter", "type ReadWriter interface{Reader; Writer}"},
{"math.Sin", "func Sin(x float64) float64"},
// TODO(gri) add more tests
}