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package vars
import (
"src.elv.sh/pkg/eval/errs"
)
type callback struct {
set func(any) error
get func() any
}
// FromSetGet makes a variable from a set callback and a get callback.
func FromSetGet(set func(any) error, get func() any) Var {
return &callback{set, get}
}
func (cv *callback) Set(val any) error {
return cv.set(val)
}
func (cv *callback) Get() any {
return cv.get()
}
type roCallback func() any
// FromGet makes a variable from a get callback. The variable is read-only.
func FromGet(get func() any) Var {
return roCallback(get)
}
func (cv roCallback) Set(any) error {
return errs.SetReadOnlyVar{}
}
func (cv roCallback) Get() any {
return cv()
}
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