63 lines
1.4 KiB
Go
63 lines
1.4 KiB
Go
|
package objects
|
||
|
|
|
||
|
|
import "github.com/d5/tengo/compiler/token"
|
||
|
|
|
||
|
|
// MapIterator represents an iterator for the map.
|
||
|
|
type MapIterator struct {
|
||
|
|
v map[string]Object
|
||
|
|
k []string
|
||
|
|
i int
|
||
|
|
l int
|
||
|
|
}
|
||
|
|
|
||
|
|
// TypeName returns the name of the type.
|
||
|
|
func (i *MapIterator) TypeName() string {
|
||
|
|
return "map-iterator"
|
||
|
|
}
|
||
|
|
|
||
|
|
func (i *MapIterator) String() string {
|
||
|
|
return "<map-iterator>"
|
||
|
|
}
|
||
|
|
|
||
|
|
// BinaryOp returns another object that is the result of
|
||
|
|
// a given binary operator and a right-hand side object.
|
||
|
|
func (i *MapIterator) BinaryOp(op token.Token, rhs Object) (Object, error) {
|
||
|
|
return nil, ErrInvalidOperator
|
||
|
|
}
|
||
|
|
|
||
|
|
// IsFalsy returns true if the value of the type is falsy.
|
||
|
|
func (i *MapIterator) IsFalsy() bool {
|
||
|
|
return true
|
||
|
|
}
|
||
|
|
|
||
|
|
// Equals returns true if the value of the type
|
||
|
|
// is equal to the value of another object.
|
||
|
|
func (i *MapIterator) Equals(Object) bool {
|
||
|
|
return false
|
||
|
|
}
|
||
|
|
|
||
|
|
// Copy returns a copy of the type.
|
||
|
|
func (i *MapIterator) Copy() Object {
|
||
|
|
return &MapIterator{v: i.v, k: i.k, i: i.i, l: i.l}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Next returns true if there are more elements to iterate.
|
||
|
|
func (i *MapIterator) Next() bool {
|
||
|
|
i.i++
|
||
|
|
return i.i <= i.l
|
||
|
|
}
|
||
|
|
|
||
|
|
// Key returns the key or index value of the current element.
|
||
|
|
func (i *MapIterator) Key() Object {
|
||
|
|
k := i.k[i.i-1]
|
||
|
|
|
||
|
|
return &String{Value: k}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Value returns the value of the current element.
|
||
|
|
func (i *MapIterator) Value() Object {
|
||
|
|
k := i.k[i.i-1]
|
||
|
|
|
||
|
|
return i.v[k]
|
||
|
|
}
|