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