Added ( and ) tokens

lexer/lexer.go

@@ -192,6 +192,16 @@ func (lexer *LexingOperation) tokenizeSymbolBeginning () (err error) {
 		token.kind = TokenKindComma
 		lexer.addToken(token)
 		err = lexer.nextRune()
+	case '(':
+		token := lexer.newToken()
+		token.kind = TokenKindLParen
+		lexer.addToken(token)
+		err = lexer.nextRune()
+	case ')':
+		token := lexer.newToken()
+		token.kind = TokenKindRParen
+		lexer.addToken(token)
+		err = lexer.nextRune()
 	case '[':
 		token := lexer.newToken()
 		token.kind = TokenKindLBracket

lexer/lexer_test.go

@@ -138,6 +138,8 @@ func TestTokenizeAll (test *testing.T) {
 		quickToken(1, TokenKindDot, nil),
 		quickToken(1, TokenKindComma, nil),
 		quickToken(2, TokenKindElipsis, nil),
+		quickToken(1, TokenKindLParen, nil),
+		quickToken(1, TokenKindRParen, nil),
 		quickToken(1, TokenKindLBracket, nil),
 		quickToken(1, TokenKindRBracket, nil),
 		quickToken(1, TokenKindLBrace, nil),

lexer/token.go

@@ -28,6 +28,8 @@ const (
         TokenKindElipsis
         TokenKindComma
         
+        TokenKindLParen
+        TokenKindRParen
         TokenKindLBracket
         TokenKindRBracket
         TokenKindLBrace
@@ -166,6 +168,10 @@ func (tokenKind TokenKind) Describe () (description string) {
 		description = "Elipsis"
 	case TokenKindComma:
 		description = "Comma"
+	case TokenKindLParen:
+		description = "LParen"
+	case TokenKindRParen:
+		description = "RParen"
 	case TokenKindLBracket:
 		description = "LBracket"
 	case TokenKindRBracket: