basic records support

core/compiler.go

@@ -265,6 +265,30 @@ func (c *Compiler) compile(tree Node) (TypeSignature, error) {
 
 		return &TupleSignature{contents}, nil
 
+	case RecordNodeType:
+		n := tree.(*RecordNode)
+
+		c.add(InstructionNewRecord)
+
+		contents := map[string]TypeSignature{}
+		for k, v := range n.entries {
+			t, err := c.compile(v)
+			if err != nil {
+				return nil, err
+			}
+
+			c.add(InstructionSetRecordItem)
+			c.addConstant(&StringValue{
+				k,
+			})
+
+			contents[k] = t
+		}
+
+		return &RecordSignature{
+			contents,
+		}, nil
+
 	case ListNodeType:
 		l := tree.(*ListNode)
 
@@ -1196,6 +1220,13 @@ func (c *Compiler) getPropertySignature(source TypeSignature, property string) (
 		return &CompositeSignature{
 			at, bt,
 		}, nil
+	case TypeRecord:
+		prop, ok := sig.(*RecordSignature).Entries[property]
+		if !ok {
+			return nil, errors.New(fmt.Sprintf("cannot record has no property \"%s\"", property))
+		}
+
+		return prop, nil
 	default:
 	}