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Evaluate and cat NARG in different macros

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This commit is contained in:
Joshua Cannon
2019-10-11 12:13:15 -05:00
parent 5fe5233612
commit f8961b99f4
1 changed files with 8 additions and 8 deletions
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16
googlemock/include/gmock/internal/gmock-pp.h
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@@ -26,10 +26,9 @@
// GMOCK_PP_NARG(PAIR) => 2
//
// Requires: the number of arguments after expansion is at most 15.
#define GMOCK_PP_NARG(...) \
GMOCK_PP_INTERNAL_EXPAND_WITH( \
GMOCK_PP_INTERNAL_INTERNAL_16TH, \
(__VA_ARGS__, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1))
#define GMOCK_PP_NARG(...) \
GMOCK_PP_INTERNAL_INTERNAL_16TH( \
__VA_ARGS__, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1)
// Returns 1 if the expansion of arguments has an unprotected comma. Otherwise
// returns 0. Requires no more than 15 unprotected commas.
@@ -48,10 +47,9 @@
GMOCK_PP_INTERNAL_EXPAND_WITH(GMOCK_PP_INTERNAL_TAIL, (__VA_ARGS__))
// Calls CAT(_Macro, NARG(__VA_ARGS__))(__VA_ARGS__)
#define GMOCK_PP_VARIADIC_CALL(_Macro, ...) \
GMOCK_PP_INTERNAL_EXPAND_WITH( \
GMOCK_PP_CAT(_Macro, GMOCK_PP_NARG(__VA_ARGS__)), \
(__VA_ARGS__))
#define GMOCK_PP_VARIADIC_CALL(_Macro, ...) \
GMOCK_PP_INTERNAL_VARIADIC_CALL( \
_Macro, GMOCK_PP_NARG(__VA_ARGS__), (__VA_ARGS__))
// If the arguments after expansion have no tokens, evaluates to `1`. Otherwise
// evaluates to `0`.
@@ -165,6 +163,8 @@
// Workaround MSVC behavior of treating __VA_ARGS__ with commas as one arg
// _Args must be wrapped in parenthesis
#define GMOCK_PP_INTERNAL_EXPAND_WITH(_Macro, _Args) _Macro _Args
#define GMOCK_PP_INTERNAL_VARIADIC_CALL(_Macro, _N, ...) \
GMOCK_PP_INTERNAL_EXPAND_WITH(GMOCK_PP_CAT(_Macro, _N),(__VA_ARGS__))
#define GMOCK_PP_INTERNAL_IBP_IS_VARIADIC_C(...) 1 _
#define GMOCK_PP_INTERNAL_IBP_IS_VARIADIC_R_1 1,