func()

in pkg/etw/mksyscall_windows.go [782:838]

• 56 lines of code
• 12 McCabe index (conditional complexity)

func (src *Source) Generate(w io.Writer) error {
	const (
		pkgStd         = iota // any package in std library
		pkgXSysWindows        // x/sys/windows package
		pkgOther
	)
	isStdRepo, err := src.IsStdRepo()
	if err != nil {
		return err
	}
	var pkgtype int
	switch {
	case isStdRepo:
		pkgtype = pkgStd
	case packageName == "windows":
		// TODO: this needs better logic than just using package name
		pkgtype = pkgXSysWindows
	default:
		pkgtype = pkgOther
	}
	if *systemDLL {
		switch pkgtype {
		case pkgStd:
			src.Import("internal/syscall/windows/sysdll")
		case pkgXSysWindows:
		default:
			src.ExternalImport("golang.org/x/sys/windows")
		}
	}
	if packageName != "syscall" {
		src.Import("syscall")
	}
	funcMap := template.FuncMap{
		"packagename": packagename,
		"syscalldot":  syscalldot,
		"newlazydll": func(dll string) string {
			arg := "\"" + dll + ".dll\""
			if !*systemDLL {
				return syscalldot() + "NewLazyDLL(" + arg + ")"
			}
			switch pkgtype {
			case pkgStd:
				return syscalldot() + "NewLazyDLL(sysdll.Add(" + arg + "))"
			case pkgXSysWindows:
				return "NewLazySystemDLL(" + arg + ")"
			default:
				return "windows.NewLazySystemDLL(" + arg + ")"
			}
		},
	}
	t := template.Must(template.New("main").Funcs(funcMap).Parse(srcTemplate))
	err = t.Execute(w, src)
	if err != nil {
		return errors.New("Failed to execute template: " + err.Error())
	}
	return nil
}