/
cmd.go
53 lines (43 loc) · 920 Bytes
/
cmd.go
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package util
var (
_Command *Command[M]
)
func DefaultCmd(m M) {
_Command = NewCommand[M](m)
}
func Cmd() *Command[M] {
return _Command
}
func NewCommand[T any](data T) *Command[T] {
return &Command[T]{
data: data,
nameToHandler: make(map[string]CmdHandler[T]),
}
}
type CmdHandler[T any] func(T, any) *Err
type Command[T any] struct {
data T
nameToHandler map[string]CmdHandler[T]
}
func (c *Command[T]) Data() T {
return c.data
}
func (c *Command[T]) Bind(name string, handler CmdHandler[T]) {
c.nameToHandler[name] = handler
}
func (c *Command[T]) Unbind(name string) bool {
if _, ok := c.nameToHandler[name]; !ok {
return false
}
delete(c.nameToHandler, name)
return true
}
func (c *Command[T]) Process(name string, data any) *Err {
handler, ok := c.nameToHandler[name]
if !ok {
return NewErr(EcNotExist, M{
"name": name,
})
}
return handler(c.data, data)
}