go-embedded/embd
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refactor

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This commit is contained in:
Karan Misra 2014-03-24 02:50:24 +05:30
parent 7851abbedf
commit 0842517208
3 changed files with 16 additions and 6 deletions
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14
descriptor.go
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@ -18,7 +18,17 @@ type Descriptor struct {
type Describer func(rev int) *Descriptor
// Describers is a global list of registered host Describers.
var Describers = map[Host]Describer{}
var describers = make(map[Host]Describer)
func Register(host Host, describer Describer) {
if describer == nil {
panic("embd: describer is nil")
}
if _, dup := describers[host]; dup {
panic("embd: describer already registered")
}
describers[host] = describer
}
// DescribeHost returns the detected host descriptor.
func DescribeHost() (*Descriptor, error) {
@ -27,7 +37,7 @@ func DescribeHost() (*Descriptor, error) {
return nil, err
}
describer, ok := Describers[host]
describer, ok := describers[host]
if !ok {
return nil, fmt.Errorf("host: invalid host %q", host)
}