Add tuples.

1 files changed, 14 insertions, 1 deletions

diff --git a/parser/src/main/java/lv/enes/orang/parser/Parser.java b/parser/src/main/java/lv/enes/orang/parser/Parser.java
index 25b57d4..0ff1f78 100644
--- a/parser/src/main/java/lv/enes/orang/parser/Parser.java
+++ b/parser/src/main/java/lv/enes/orang/parser/Parser.java
@@ -283,9 +283,12 @@ public class Parser {
                         case PAREN_LEFT -> {
                                 consumeToken(Token.Type.PAREN_LEFT);
                                 if (maybeConsumeToken(Token.Type.PAREN_RIGHT)) {
-                                        yield VoidExpression.INSTANCE;
+                                        yield EmptyTupleLiteral.INSTANCE;
                                 }
                                 var expr = parseExpression();
+                                if (maybeConsumeToken(Token.Type.COMMA)) {
+                                        yield parseTupleExpression(expr);
+                                }
                                 consumeToken(Token.Type.PAREN_RIGHT);
                                 yield expr;
                         }
@@ -336,6 +339,16 @@ public class Parser {
                 return new StringLiteral(sb.toString());
         }
 
+        private TupleExpression parseTupleExpression(Expression first) throws ParserException {
+                var exprs = new ArrayList<Expression>();
+                exprs.add(first);
+                do {
+                        exprs.add(parseExpression());
+                        maybeConsumeToken(Token.Type.COMMA);
+                } while (!maybeConsumeToken(Token.Type.PAREN_RIGHT));
+                return new TupleExpression(new NonEmptyList<>(exprs));
+        }
+
         private Expression parseUnaryExpression() throws ParserException {
                 if (isUnaryOp(input.peek())) {
                         var op = toUnaryOp(input.next());