From 753945a23e4cbc0f5fd1d512ba629b5f03633534 Mon Sep 17 00:00:00 2001
From: brettlangdon <brett@blangdon.com>
Date: Fri, 9 Oct 2015 15:59:06 -0700
Subject: [PATCH] add tuple, none, and dict

---
 gython/dict.go  | 31 +++++++++++++++++++++++++++++++
 gython/none.go  |  7 +++++++
 gython/tuple.go | 15 +++++++++++----
 3 files changed, 49 insertions(+), 4 deletions(-)
 create mode 100644 gython/dict.go
 create mode 100644 gython/none.go

diff --git a/gython/dict.go b/gython/dict.go
new file mode 100644
index 0000000..cc672f4
--- /dev/null
+++ b/gython/dict.go
@@ -0,0 +1,31 @@
+package gython
+
+import "fmt"
+
+type Dict struct {
+	values map[Object]Object
+}
+
+func NewDict() *Dict {
+	return &Dict{
+		values: make(map[Object]Object, 0),
+	}
+}
+
+func (dict *Dict) object() {}
+
+func (dict *Dict) Length() *Float {
+	return NewFloat(float64(len(dict.values)))
+}
+
+func (dict *Dict) GetItem(key Object) (Object, error) {
+	value, exists := dict.values[key]
+	if exists == false {
+		return nil, fmt.Errorf("Key error: %#v", key)
+	}
+	return value, nil
+}
+
+func (dict *Dict) SetItem(key Object, value Object) {
+	dict.values[key] = value
+}
diff --git a/gython/none.go b/gython/none.go
new file mode 100644
index 0000000..fc270db
--- /dev/null
+++ b/gython/none.go
@@ -0,0 +1,7 @@
+package gython
+
+type _None struct{}
+
+func (none *_None) object() {}
+
+var None *_None = &_None{}
diff --git a/gython/tuple.go b/gython/tuple.go
index b1f7ce0..a559397 100644
--- a/gython/tuple.go
+++ b/gython/tuple.go
@@ -1,10 +1,17 @@
 package gython
 
 type Tuple struct {
+	length *Float
+	values []Object
 }
 
-func (tuple *Tuple) object() {}
-
-func NewTuple() *Tuple {
-	return &Tuple{}
+func NewTuple(values ...Object) *Tuple {
+	return &Tuple{
+		length: NewFloat(float64(len(values))),
+		values: values,
+	}
 }
+
+func (tuple *Tuple) object()          {}
+func (tuple *Tuple) Length() *Float   { return tuple.length }
+func (tuple *Tuple) Values() []Object { return tuple.values }