made infix string better
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@@ -9,7 +9,7 @@ namespace ast {
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}
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std::string infix_expr::str() const {
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return left->str() + token.literal + right->str();
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return "(" + left->str() + " " + op + " " + right->str() + ")";
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}
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infix_expr::~infix_expr() {
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