+++ /dev/null
-// +build ignore
-
-// mkstdlib generates the zstdlib.go file, containing the Go standard
-// library API symbols. It's baked into the binary to avoid scanning
-// GOPATH in the common case.
-package main
-
-import (
- "bufio"
- "bytes"
- "fmt"
- "go/format"
- "io"
- "io/ioutil"
- "log"
- "os"
- "os/exec"
- "path/filepath"
- "regexp"
- "runtime"
- "sort"
-)
-
-func mustOpen(name string) io.Reader {
- f, err := os.Open(name)
- if err != nil {
- log.Fatal(err)
- }
- return f
-}
-
-func api(base string) string {
- return filepath.Join(runtime.GOROOT(), "api", base)
-}
-
-var sym = regexp.MustCompile(`^pkg (\S+).*?, (?:var|func|type|const) ([A-Z]\w*)`)
-
-var unsafeSyms = map[string]bool{"Alignof": true, "ArbitraryType": true, "Offsetof": true, "Pointer": true, "Sizeof": true}
-
-func main() {
- var buf bytes.Buffer
- outf := func(format string, args ...interface{}) {
- fmt.Fprintf(&buf, format, args...)
- }
- outf("// Code generated by mkstdlib.go. DO NOT EDIT.\n\n")
- outf("package imports\n")
- outf("var stdlib = map[string][]string{\n")
- f := io.MultiReader(
- mustOpen(api("go1.txt")),
- mustOpen(api("go1.1.txt")),
- mustOpen(api("go1.2.txt")),
- mustOpen(api("go1.3.txt")),
- mustOpen(api("go1.4.txt")),
- mustOpen(api("go1.5.txt")),
- mustOpen(api("go1.6.txt")),
- mustOpen(api("go1.7.txt")),
- mustOpen(api("go1.8.txt")),
- mustOpen(api("go1.9.txt")),
- mustOpen(api("go1.10.txt")),
- mustOpen(api("go1.11.txt")),
- mustOpen(api("go1.12.txt")),
- mustOpen(api("go1.13.txt")),
- mustOpen(api("go1.14.txt")),
-
- // The API of the syscall/js package needs to be computed explicitly,
- // because it's not included in the GOROOT/api/go1.*.txt files at this time.
- syscallJSAPI(),
- )
- sc := bufio.NewScanner(f)
-
- pkgs := map[string]map[string]bool{
- "unsafe": unsafeSyms,
- }
- paths := []string{"unsafe"}
-
- for sc.Scan() {
- l := sc.Text()
- if m := sym.FindStringSubmatch(l); m != nil {
- path, sym := m[1], m[2]
-
- if _, ok := pkgs[path]; !ok {
- pkgs[path] = map[string]bool{}
- paths = append(paths, path)
- }
- pkgs[path][sym] = true
- }
- }
- if err := sc.Err(); err != nil {
- log.Fatal(err)
- }
- sort.Strings(paths)
- for _, path := range paths {
- outf("\t%q: []string{\n", path)
- pkg := pkgs[path]
- var syms []string
- for sym := range pkg {
- syms = append(syms, sym)
- }
- sort.Strings(syms)
- for _, sym := range syms {
- outf("\t\t%q,\n", sym)
- }
- outf("},\n")
- }
- outf("}\n")
- fmtbuf, err := format.Source(buf.Bytes())
- if err != nil {
- log.Fatal(err)
- }
- err = ioutil.WriteFile("zstdlib.go", fmtbuf, 0o666)
- if err != nil {
- log.Fatal(err)
- }
-}
-
-// syscallJSAPI returns the API of the syscall/js package.
-// It's computed from the contents of $(go env GOROOT)/src/syscall/js.
-func syscallJSAPI() io.Reader {
- var exeSuffix string
- if runtime.GOOS == "windows" {
- exeSuffix = ".exe"
- }
- cmd := exec.Command("go"+exeSuffix, "run", "cmd/api", "-contexts", "js-wasm", "syscall/js")
- out, err := cmd.Output()
- if err != nil {
- log.Fatalln(err)
- }
- return bytes.NewReader(out)
-}