Hashes

ast/ast.go

@@ -325,3 +325,29 @@ func (ie IndexExpression) String() string {
 }
 
 func (ie IndexExpression) expressionNode() {}
+
+type HashLiteral struct {
+	Token token.Token // the '{' token
+	Pairs map[Expression]Expression
+}
+
+func (hl HashLiteral) TokenLiteral() string {
+	return hl.Token.Literal
+}
+
+func (hl HashLiteral) String() string {
+	var out bytes.Buffer
+
+	pairs := []string{}
+	for key, value := range hl.Pairs {
+		pairs = append(pairs, key.String()+":"+value.String())
+	}
+
+	out.WriteString("{")
+	out.WriteString(strings.Join(pairs, ", "))
+	out.WriteString("}")
+
+	return out.String()
+}
+
+func (hl HashLiteral) expressionNode() {}