wgtmac commented on code in PR #503:
URL: https://github.com/apache/iceberg-cpp/pull/503#discussion_r2680785771
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src/iceberg/expression/binder.cc:
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@@ -79,36 +96,47 @@ Result<std::shared_ptr<Expression>> Binder::Aggregate(
Result<bool> IsBoundVisitor::IsBound(const std::shared_ptr<Expression>& expr) {
ICEBERG_DCHECK(expr != nullptr, "Expression cannot be null");
IsBoundVisitor visitor;
- return Visit<bool, IsBoundVisitor>(expr, visitor);
+ auto visit_result = Visit<std::optional<bool>, IsBoundVisitor>(expr,
visitor);
+ ICEBERG_RETURN_UNEXPECTED(visit_result);
+ auto result = std::move(visit_result.value());
+ // If the result is null, return true
+ return result.value_or(true);
}
-Result<bool> IsBoundVisitor::AlwaysTrue() { return true; }
+Result<std::optional<bool>> IsBoundVisitor::AlwaysTrue() { return
std::nullopt; }
Review Comment:
What about letting each visitors to handle this instead of complicating the
return type?
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