Details
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Task
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Resolution: Unresolved
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Minor - P4
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None
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None
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None
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Query Optimization
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170
Description
The expression.h registration macros could be refactored to use REGISTER_EXPRESSION_CONDITIONALLY rather than all calling MONGO_INITIALIZER_GENERAL and registerExpression .
Currently if we try to refactor them this results in a compilation error on the Windows variants (see BF-25979)
src\mongo\db\pipeline\expression.cpp(571,1): error C2143: syntax error: missing ';' before '&&'
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REGISTER_STABLE_EXPRESSION(and, ExpressionAnd::parse);
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This seems to be because the word 'and' in the Windows preprocessor is a macro for && : https://gcc.gnu.org/onlinedocs/cpp/C_002b_002b-Named-Operators.html#C_002b_002b-Named-Operators
We should look into if it's possible to get around this