Example #1
0
File: ident.go Project: ctliu3/Gosp
func (self *Ident) Eval(env *scope.Scope) value.Value {
	if obj := env.Lookup(self.Name, true); obj != nil {
		//fmt.Println(reflect.TypeOf(obj.Data))
		return obj.Data.(value.Value)
	}
	return nil
}
Example #2
0
// This is a set manipulation.
func (self *Define) Eval(env *scope.Scope) value.Value {
	fmt.Println("Define#Eval")
	var_ := self.var_.(*Ident)
	val := self.expr.Eval(env)
	env.Insert(var_.Name, scope.NewObj(val))

	// Define does not have return val.
	return nil
}
Example #3
0
File: set.go Project: ctliu3/Gosp
// This is a set manipulation.
func (self *Set) Eval(env *scope.Scope) value.Value {
	fmt.Println("Set#Eval")
	var_ := self.var_.(*Ident)
	val := self.expr.Eval(env)
	if obj := env.Lookup(var_.Name, true); obj == nil {
		panic("set!: assignment disallowed.")
	}
	env.Insert(var_.Name, scope.NewObj(val))

	// Define does not have return val.
	return nil
}