Implemented struct parser

src/token/Kind.go

@@ -70,6 +70,7 @@ const (
 	Import                            // import
 	Loop                              // loop
 	Return                            // return
+	Struct                            // struct
 	Switch                            // switch
 	___END_KEYWORDS___                // </keywords>
 )

src/token/Tokenize_test.go

@@ -25,7 +25,7 @@ func TestFunction(t *testing.T) {
 }
 
 func TestKeyword(t *testing.T) {
-	tokens := token.Tokenize([]byte("assert if import else loop return switch"))
+	tokens := token.Tokenize([]byte("assert if import else loop return struct switch"))
 
 	expected := []token.Kind{
 		token.Assert,
@@ -34,6 +34,7 @@ func TestKeyword(t *testing.T) {
 		token.Else,
 		token.Loop,
 		token.Return,
+		token.Struct,
 		token.Switch,
 		token.EOF,
 	}

src/token/identifier.go

@@ -25,6 +25,8 @@ func identifier(tokens List, buffer []byte, i Position) (List, Position) {
 		kind = Loop
 	case "return":
 		kind = Return
+	case "struct":
+		kind = Struct
 	case "switch":
 		kind = Switch
 	}