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74543c4034
Fix completion in the following cases:
type foo struct{}
// now we offer "&foo" instead of "foo"
var _ *foo = fo<>{}
struct { f *foo }{
// now we offer "&foo" instead of "*foo"
f: fo<>{},
}
Composite literal type names are a bit special because they are part
of an arbitrary value expression rather than just a standalone type
name expression. In particular, they can be preceded by "&", which
affects how they relate to the surrounding context. The "&" doesn't
technically apply to the type name, but we must take it into account.
I made three changes to fix the behavior:
1. When we want to make a composite literal type name into a pointer,
we use "&" instead of "*".
2. Record if a composite literal type is already has a "&" so we don't
add it again.
3. Fix "var _ *foo = fo<>{}" to properly infer expected type of "*foo"
by not stopping at *ast.CompositeLit searching up AST path when the
position is in the type name (as opposed to within the curlies).
Change-Id: Iee828f259eb939646b68f5066614ea3a262585c2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/247525
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
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