ExpressionParser: Get rid of some redundant copies #12400
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These aren't necessarily cheap to copy, since a control qualifier will have around 3 std::strings inside of it, so passing by value can churn allocations a little bit.
Makes for consistency with the surrounding code.
Just some trivial copies that can be eliminated or turned into moves.
jordan-woyak
approved these changes
Dec 12, 2023
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A few cases were making copies of ControlQualifier instances, which hold 3 strings, so we can be churning memory a little. We can instead pass those by reference or move them instead.