mirror of
https://github.com/golang/go
synced 2024-11-12 05:30:21 -07:00
6e3e380923
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
97 lines
2.6 KiB
Go
97 lines
2.6 KiB
Go
// errchk $G -e $D/$F.go
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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type Tbyte []byte
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type Trune []rune
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type Tint64 []int64
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type Tstring string
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func main() {
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s := "hello"
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sb := []byte("hello")
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sr := []rune("hello")
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si := []int64{'h', 'e', 'l', 'l', 'o'}
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ts := Tstring(s)
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tsb := Tbyte(sb)
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tsr := Trune(sr)
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tsi := Tint64(si)
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_ = string(s)
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_ = []byte(s)
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_ = []rune(s)
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_ = []int64(s) // ERROR "cannot convert.*\[\]int64"
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_ = Tstring(s)
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_ = Tbyte(s)
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_ = Trune(s)
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_ = Tint64(s) // ERROR "cannot convert.*Tint64"
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_ = string(sb)
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_ = []byte(sb)
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_ = []rune(sb) // ERROR "cannot convert.*\[\]rune"
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_ = []int64(sb) // ERROR "cannot convert.*\[\]int64"
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_ = Tstring(sb)
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_ = Tbyte(sb)
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_ = Trune(sb) // ERROR "cannot convert.*Trune"
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_ = Tint64(sb) // ERROR "cannot convert.*Tint64"
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_ = string(sr)
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_ = []byte(sr) // ERROR "cannot convert.*\[\]byte"
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_ = []rune(sr)
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_ = []int64(sr) // ERROR "cannot convert.*\[\]int64"
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_ = Tstring(sr)
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_ = Tbyte(sr) // ERROR "cannot convert.*Tbyte"
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_ = Trune(sr)
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_ = Tint64(sr) // ERROR "cannot convert.*Tint64"
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_ = string(si) // ERROR "cannot convert.* string"
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_ = []byte(si) // ERROR "cannot convert.*\[\]byte"
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_ = []rune(si) // ERROR "cannot convert.*\[\]rune"
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_ = []int64(si)
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_ = Tstring(si) // ERROR "cannot convert.*Tstring"
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_ = Tbyte(si) // ERROR "cannot convert.*Tbyte"
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_ = Trune(si) // ERROR "cannot convert.*Trune"
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_ = Tint64(si)
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_ = string(ts)
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_ = []byte(ts)
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_ = []rune(ts)
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_ = []int64(ts) // ERROR "cannot convert.*\[\]int64"
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_ = Tstring(ts)
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_ = Tbyte(ts)
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_ = Trune(ts)
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_ = Tint64(ts) // ERROR "cannot convert.*Tint64"
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_ = string(tsb)
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_ = []byte(tsb)
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_ = []rune(tsb) // ERROR "cannot convert.*\[\]rune"
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_ = []int64(tsb) // ERROR "cannot convert.*\[\]int64"
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_ = Tstring(tsb)
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_ = Tbyte(tsb)
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_ = Trune(tsb) // ERROR "cannot convert.*Trune"
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_ = Tint64(tsb) // ERROR "cannot convert.*Tint64"
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_ = string(tsr)
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_ = []byte(tsr) // ERROR "cannot convert.*\[\]byte"
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_ = []rune(tsr)
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_ = []int64(tsr) // ERROR "cannot convert.*\[\]int64"
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_ = Tstring(tsr)
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_ = Tbyte(tsr) // ERROR "cannot convert.*Tbyte"
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_ = Trune(tsr)
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_ = Tint64(tsr) // ERROR "cannot convert.*Tint64"
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_ = string(tsi) // ERROR "cannot convert.* string"
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_ = []byte(tsi) // ERROR "cannot convert.*\[\]byte"
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_ = []rune(tsi) // ERROR "cannot convert.*\[\]rune"
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_ = []int64(tsi)
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_ = Tstring(tsi) // ERROR "cannot convert.*Tstring"
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_ = Tbyte(tsi) // ERROR "cannot convert.*Tbyte"
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_ = Trune(tsi) // ERROR "cannot convert.*Trune"
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_ = Tint64(tsi)
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}
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