1 files changed, 3 insertions, 1 deletions

diff --git a/grammar.bnf b/grammar.bnf
index 30b48f6..3dcb1c6 100644
--- a/grammar.bnf
+++ b/grammar.bnf
@@ -10,9 +10,11 @@ arg-spec-tuple ::= '(' ')' | '(' arg-spec ',' arg-spec (',' arg-spec)* ','? ')';
 expression ::= binary-expression | unary-expression;
 unary-expression ::= unop+ simple-expression;
 binary-expression ::= call-expression (binop call-expression)*;
-call-expression ::= simple-expression+;
+call-expression ::= member-access-expression+;
 binop ::= '*' | '/' | '+' | '-' | '?=' | '/=' | '>' | '>=' | '<' | '<=';
 unop ::= '+' | '-' | '!';
+member-access-expression ::= simple-expression (member-access)*;
+member-access ::= '.[' expression ']';
 simple-expression ::= '(' expression ')'
                     | 'true' | 'false'
                     | INTEGER