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12 lines
567 B
C++
12 lines
567 B
C++
#pragma once
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#warning "these defines break if statements with multiple parameters to templates"
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#define if1(statement) if(statement)
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#define if2(condition, false) ([&](auto&& value) -> decltype(condition) { \
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return (bool)value ? value : (decltype(condition))false; \
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})(condition)
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#define if3(condition, true, false) ((condition) ? (true) : (decltype(true))(false))
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#define if4(type, condition, true, false) ((condition) ? (type)(true) : (type)(false))
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#define if_(_1, _2, _3, _4, name, ...) name
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#define if(...) if_(__VA_ARGS__, if4, if3, if2, if1)(__VA_ARGS__)
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