allow direct conversion between string and named []byte, []rune
The allowed conversions before and after are:
type Tstring string
type Tbyte []byte
type Trune []rune
string <-> string // ok
string <-> []byte // ok
string <-> []rune // ok
string <-> Tstring // ok
string <-> Tbyte // was illegal, now ok
string <-> Trune // was illegal, now ok
Tstring <-> string // ok
Tstring <-> []byte // ok
Tstring <-> []rune // ok
Tstring <-> Tstring // ok
Tstring <-> Tbyte // was illegal, now ok
Tstring <-> Trune // was illegal, now ok
Update spec, compiler, tests. Use in a few packages.
We agreed on this a few months ago but never implemented it.
Fixes #1707.
R=golang-dev, gri, r
CC=golang-dev
https://golang.org/cl/5421057
diff --git a/test/named1.go b/test/named1.go
index fe71df8..64e4928 100644
--- a/test/named1.go
+++ b/test/named1.go
@@ -54,8 +54,8 @@
_, bb := <-c
asBool(bb) // ERROR "cannot use.*type bool.*as type Bool"
- _, b = <-c // ERROR "cannot .* bool.*type Bool"
+ _, b = <-c // ERROR "cannot .* bool.*type Bool"
_ = b
- asString(String(slice)) // ERROR "cannot .*type Slice.*type String"
+ asString(String(slice)) // ok
}
