| // 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) |
| } |
