golang directives 代码
文件路径：/src/cmd/cover/testdata/directives.go
/ Copyright 2017 The Go Authors. All rights reserved.
/ Use of this source code is governed by a BSD-style
/ license that can be found in the LICENSE file.
/ This file is processed by the cover command, then a test verifies that
/ all compiler directives are preserved and positioned appropriately.
/go:a
/go:b
package main
/go:c1
/go:c2
/doc
func c() {
}
/go:d1
/doc
/go:d2
type d int
/go:e1
/doc
/go:e2
type (
e int
f int
)
/go:_empty1
/doc
/go:_empty2
type ()
/go:f