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31 | package object
func NewEnclosedEnvironment(outer *Environment) *Environment {
env := NewEnvironment()
env.outer = outer
return env
}
func NewEnvironment() *Environment {
s := make(map[string]Object)
return &Environment{store: s, outer: nil}
}
type Environment struct {
store map[string]Object
outer *Environment
}
func (e *Environment) Get(name string) (Object, bool) {
obj, ok := e.store[name]
if !ok && e.outer != nil {
obj, ok = e.outer.Get(name)
}
return obj, ok
}
func (e *Environment) Set(name string, val Object) Object {
e.store[name] = val
return val
}
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