blob: 66dbd8b5d97e2efec6ded535b7f5caba860058a3 [file] [log] [blame]
// +build OMIT
package main
import (
"fmt"
"io/ioutil"
"path/filepath"
"runtime"
"strings"
)
func walk(dir string, f func(string) bool) bool {
fis, err := ioutil.ReadDir(dir)
if err != nil {
panic(err)
}
// parse all *.go files in directory;
// traverse subdirectories, but don't walk into testdata
for _, fi := range fis {
path := filepath.Join(dir, fi.Name())
if fi.IsDir() {
if fi.Name() != "testdata" {
if !walk(path, f) {
return false
}
}
} else if strings.HasSuffix(fi.Name(), ".go") && !strings.HasPrefix(fi.Name(), ".") {
if !f(path) {
return false
}
}
}
return true
}
func walkStdLib(f func(filename string) bool) {
walk(filepath.Join(runtime.GOROOT(), "src"), f)
}
func _() {
// example START OMIT
n := 0
println := func(s string) bool {
fmt.Println(n, s)
n++
return n < 10
}
walkStdLib(println)
// example END OMIT
}
func main() {
// main START OMIT
n := 0
walkStdLib(func(s string) bool {
fmt.Println(n, s)
n++
return n < 10
})
// main END OMIT
}