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-rw-r--r--grammar.ebnf2
1 files changed, 1 insertions, 1 deletions
diff --git a/grammar.ebnf b/grammar.ebnf
index bde99cb..b770797 100644
--- a/grammar.ebnf
+++ b/grammar.ebnf
@@ -16,7 +16,7 @@ Expression   ::= EqualityExpression | AdditiveExpression | FunctionDefinition |
 
 EqualityExpression ::= AdditiveExpression "==" AdditiveExpression
 
-AdditiveExpression ::= PrimaryExpression (("+" | "-") AdditiveExpression)?
+AdditiveExpression ::= PrimaryExpression (("+" | "-") PrimaryExpression)*
 
 PrimaryExpression ::= NUMBER | BOOLEAN | IDENTIFIER | FunctionCallStatement