1 files changed, 39 insertions, 4 deletions
diff --git a/object/object.go b/object/object.go
index 20deb0c..793ff6b 100644
--- a/object/object.go
+++ b/object/object.go
@@ -1,6 +1,11 @@
 package object
 
-import "fmt"
+import (
+	"bytes"
+	"fmt"
+	"mana/ast"
+	"strings"
+)
 
 type ObjectType string
 
@@ -9,7 +14,8 @@ const (
 	BOOLEAN_OBJ      = "BOOLEAN"
 	NULL_OBJ         = "NULL"
 	RETURN_VALUE_OBJ = "RETURN_VALUE"
-  ERROR_OBJ        = "ERROR"
+	FUNCTION_OBJ     = "FUNCTION"
+	ERROR_OBJ        = "ERROR"
 )
 
 type Object interface {
@@ -32,7 +38,13 @@ type ReturnValue struct {
 }
 
 type Error struct {
-  Message string
+	Message string
+}
+
+type Function struct {
+	Parameters []*ast.Identifier
+	Body       *ast.BlockStatement
+	Env        *Environment
 }
 
 func (i *Integer) Type() ObjectType {
@@ -67,5 +79,28 @@ func (rv *ReturnValue) Inspect() string {
 	return rv.Value.Inspect()
 }
 
+func (f *Function) Type() ObjectType {
+	return FUNCTION_OBJ
+}
+
+func (f *Function) Inspect() string {
+	var out bytes.Buffer
+
+	params := []string{}
+
+	for _, p := range f.Parameters {
+		params = append(params, p.String())
+	}
+
+	out.WriteString("fn")
+	out.WriteString("(")
+	out.WriteString(strings.Join(params, ", "))
+	out.WriteString(") {\n")
+	out.WriteString(f.Body.String())
+	out.WriteString("\n}")
+
+	return out.String()
+}
+
 func (e *Error) Type() ObjectType { return ERROR_OBJ }
-func (e *Error) Inspect() string { return "ERROR:" + e.Message }
+func (e *Error) Inspect() string  { return "ERROR:" + e.Message }