mirror of
https://github.com/golang/go
synced 2024-11-17 21:44:43 -07:00
47 lines
1.1 KiB
Go
47 lines
1.1 KiB
Go
|
// run
|
||
|
|
|
||
|
|
// Copyright 2018 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.
|
||
|
|
|
||
|
|
// Verify effect of various line directives.
|
||
|
|
// TODO: check columns
|
||
|
|
|
||
|
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"runtime"
|
||
|
|
)
|
||
|
|
|
||
|
|
func check(file string, line int) {
|
||
|
|
_, f, l, ok := runtime.Caller(1)
|
||
|
|
if !ok {
|
||
|
|
panic("runtime.Caller(1) failed")
|
||
|
|
}
|
||
|
|
if f != file || l != line {
|
||
|
|
panic(fmt.Sprintf("got %s:%d; want %s:%d", f, l, file, line))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
//-style line directives
|
||
|
|
//line :1
|
||
|
|
check("??", 1) // no file specified
|
||
|
|
//line foo.go:1
|
||
|
|
check("foo.go", 1)
|
||
|
|
//line bar.go:10:20
|
||
|
|
check("bar.go", 10)
|
||
|
|
//line :11:22
|
||
|
|
check("bar.go", 11) // no file, but column specified => keep old filename
|
||
|
|
|
||
|
|
/*-style line directives */
|
||
|
|
/*line :1*/ check("??", 1) // no file specified
|
||
|
|
/*line foo.go:1*/ check("foo.go", 1)
|
||
|
|
/*line bar.go:10:20*/ check("bar.go", 10)
|
||
|
|
/*line :11:22*/ check("bar.go", 11) // no file, but column specified => keep old filename
|
||
|
|
|
||
|
|
/*line :10*/ check("??", 10); /*line foo.go:20*/ check("foo.go", 20); /*line :30:1*/ check("foo.go", 30)
|
||
|
|
check("foo.go", 31)
|
||
|
|
}
|