zturner added inline comments.
================
Comment at:
source/Plugins/ExpressionParser/Clang/ClangExpressionDeclMap.cpp:382-387
+ if (llvm::Error E = user_type_or_err.takeError()) {
+ std::string Reason = llvm::toString(std::move(E));
if (log)
- log->Printf("Persistent variable's type wasn't copied successfully");
+ log->Printf("%s", Reason.c_str());
return false;
}
----------------
I wonder if we need a macro like
```
#define RETURN_IF_UNEXPECTED(item, ret_val, log_categories) \
if (auto E = item.takeError()) { \
std::string Reason = llvm::toString(std::move(E)); \
Log *log(lldb_private::GetLogIfAllCategoriesSet(log_categories)); \
if (log) \
log->Printf("%s", Reason.c_str());
return ret_val;
}
```
then we say:
```
RETURN_IF_UNEXPECTED(user_type_or_err, false, LIBLLDB_LOG_EXPRESSIONS);
```
I don't have too strong of an opinion, but as this pattern becomes more
pervasive, it's annoying to have to write out 5-6 lines of code every time you
call a function that returns an `Expected<T>`.
https://reviews.llvm.org/D43912
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