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Simplify declarations of x-macro FLATBUFFERS_TD (#5638)

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This commit is contained in:
Vladimir Glavnyy
2019-11-26 03:54:59 +07:00
committed by Wouter van Oortmerssen
parent bcf1bd5c9e
commit 075e8d676b
13 changed files with 102 additions and 110 deletions
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26
include/flatbuffers/idl.h
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@@ -91,6 +91,20 @@ switch (type) {
}
*/
// If not all FLATBUFFERS_GEN_() arguments are necessary for implementation
// of FLATBUFFERS_TD, you can use a variadic macro (with __VA_ARGS__ if needed).
// In the above example, only CTYPE is used to generate the code, it can be rewritten:
/*
switch (type) {
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, ...) \
case BASE_TYPE_ ## ENUM: \
// do something specific to CTYPE here
FLATBUFFERS_GEN_TYPES(FLATBUFFERS_TD)
#undef FLATBUFFERS_TD
}
*/
#define FLATBUFFERS_GEN_TYPES(TD) \
FLATBUFFERS_GEN_TYPES_SCALAR(TD) \
FLATBUFFERS_GEN_TYPES_POINTER(TD) \
@@ -101,17 +115,15 @@ switch (type) {
__extension__ // Stop GCC complaining about trailing comma with -Wpendantic.
#endif
enum BaseType {
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE, GTYPE, NTYPE, PTYPE, \
RTYPE, KTYPE) \
BASE_TYPE_ ## ENUM,
#define FLATBUFFERS_TD(ENUM, ...) \
BASE_TYPE_ ## ENUM,
FLATBUFFERS_GEN_TYPES(FLATBUFFERS_TD)
#undef FLATBUFFERS_TD
};
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, JTYPE, GTYPE, NTYPE, PTYPE, \
RTYPE, KTYPE) \
static_assert(sizeof(CTYPE) <= sizeof(largest_scalar_t), \
"define largest_scalar_t as " #CTYPE);
#define FLATBUFFERS_TD(ENUM, IDLTYPE, CTYPE, ...) \
static_assert(sizeof(CTYPE) <= sizeof(largest_scalar_t), \
"define largest_scalar_t as " #CTYPE);
FLATBUFFERS_GEN_TYPES(FLATBUFFERS_TD)
#undef FLATBUFFERS_TD