arrays and array indexes

1 files changed, 22 insertions, 0 deletions

diff --git a/object/object.go b/object/object.go
index 24de9be..9fe896e 100644
--- a/object/object.go
+++ b/object/object.go
@@ -18,6 +18,7 @@ const (
 	STRING_OBJ       = "STRING"
 	ERROR_OBJ        = "ERROR"
 	BUILTIN_OBJ      = "BUILTIN"
+	ARRAY_OBJ        = "ARRAY"
 )
 
 type Object interface {
@@ -59,6 +60,10 @@ type Builtin struct {
 	Fn BuiltinFunction
 }
 
+type Array struct {
+	Elements []Object
+}
+
 func (i *Integer) Type() ObjectType {
 	return INTEGER_OBJ
 }
@@ -122,3 +127,20 @@ func (s *String) Inspect() string  { return s.Value }
 
 func (b *Builtin) Type() ObjectType { return BUILTIN_OBJ }
 func (b *Builtin) Inspect() string  { return "builtin function" }
+
+func (ao *Array) Type() ObjectType { return ARRAY_OBJ }
+func (ao *Array) Inspect() string {
+	var out bytes.Buffer
+
+	elements := []string{}
+
+	for _, el := range ao.Elements {
+		elements = append(elements, el.Inspect())
+	}
+
+	out.WriteString("[")
+	out.WriteString(strings.Join(elements, ", "))
+	out.WriteString("]")
+
+	return out.String()
+}