Parse addition

1 files changed, 26 insertions, 0 deletions

diff --git a/src/main/java/org/shedlang/compiler/parser/Parser.java b/src/main/java/org/shedlang/compiler/parser/Parser.java
index a2b7b09b..dcb06eb0 100644
--- a/src/main/java/org/shedlang/compiler/parser/Parser.java
+++ b/src/main/java/org/shedlang/compiler/parser/Parser.java
@@ -18,6 +18,28 @@ public class Parser {
     private Parser() {
     }
 
+    private static UntypedExpressionNode parseAdd(
+        UntypedExpressionNode left,
+        TokenIterator<TokenType> tokens
+    ) {
+        var start = left.source().start();
+
+        tokens.skip(TokenType.SYMBOL_PLUS);
+
+        // TODO: precedence
+        var right = parseTopLevelExpression(tokens);
+
+        var end = tokens.position();
+        var source = start.to(end);
+
+        return new UntypedBinaryOperationNode(
+            UntypedBinaryOperator.ADD,
+            left,
+            right,
+            source
+        );
+    }
+
     private static UntypedExpressionNode parseCall(UntypedExpressionNode receiver, TokenIterator<TokenType> tokens) {
         var start = receiver.source().start();
 
@@ -290,6 +312,10 @@ public class Parser {
 
         while (true) {
             switch (tokens.peek().tokenType()) {
+                // TODO: precedence
+                case SYMBOL_PLUS -> {
+                    left = parseAdd(left, tokens);
+                }
                 case SYMBOL_BANG, SYMBOL_PAREN_OPEN -> {
                     left = parseCall(left, tokens);
                 }