basic records support

core/nodes.go

@@ -29,6 +29,7 @@ const (
 	NilNodeType
 	ListNodeType
 	TupleNodeType
+	RecordNodeType
 	BinaryNodeType
 	UnaryNodeType
 	BlockNodeType
@@ -93,6 +94,8 @@ func (n NodeType) String() string {
 		return "Alias"
 	case IndexNodeType:
 		return "Index"
+	case RecordNodeType:
+		return "Record"
 	}
 	return "Invalid Node Type"
 }
@@ -237,6 +240,36 @@ func (n TupleNode) Bounds() (Pos, Pos) {
 	return n.start, n.end
 }
 
+type RecordNode struct {
+	entries map[string]Node
+
+	start Pos
+	end   Pos
+}
+
+func (n RecordNode) Type() NodeType {
+	return RecordNodeType
+}
+
+func (n RecordNode) String() string {
+	sb := strings.Builder{}
+
+	sb.WriteString("(")
+	for name, item := range n.entries {
+		sb.WriteString(name)
+		sb.WriteString(": ")
+		sb.WriteString(item.String())
+		sb.WriteString(",")
+	}
+	sb.WriteString(")")
+
+	return sb.String()
+}
+
+func (n RecordNode) Bounds() (Pos, Pos) {
+	return n.start, n.end
+}
+
 type AccessNode struct {
 	source   Node
 	property *Token
@@ -269,6 +302,8 @@ func (n BinaryOperation) String() string {
 		return "multiply"
 	case BinaryDivision:
 		return "divide"
+	case BinaryModulo:
+		return "modulo"
 	case BinaryEquality:
 		return "equality"
 	case BinaryInequality: