[dev.typealias] cmd/compile, go/importer: define export format and implement...
[dev.typealias] cmd/compile, go/importer: define export format and implement importing of type aliases This defines the (tentative) export/import format for type aliases. The compiler doesn't support type aliases yet, so while the code is present it is guarded with a flag. The export format for embedded (anonymous) fields now has three modes (mode 3 is new): 1) The original type name and the anonymous field name are the same, and the name is exported: we don't need the field name and write "" instead 2) The original type name and the anonymous field name are the same, and the name is not exported: we don't need the field name and write "?" instead, indicating that there is package info 3) The original type name and the anonymous field name are different: we do need the field name and write "@" followed by the field name (and possible package info) For #18130. Change-Id: I790dad826757233fa71396a210f966c6256b75d3 Reviewed-on: https://go-review.googlesource.com/35100Reviewed-by: Alan Donovan <adonovan@google.com>
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