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src/util: minor xspan enhancements

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This commit is contained in:
Markus F.X.J. Oberhumer
2023-10-14 05:58:47 +02:00
parent 005e39871b
commit 2b371e99bd
6 changed files with 44 additions and 17 deletions
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src/util/xspan.h
+19
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@@ -95,6 +95,11 @@ using XSPAN_NAMESPACE_NAME::raw_index_bytes; // overloaded for all classes
#define XSPAN_P_VAR(type, var, first, ...) XSPAN_P(type) var((first), ##__VA_ARGS__)
#define XSPAN_S_VAR(type, var, first, ...) XSPAN_S(type) var((first), ##__VA_ARGS__)
// cast to a different type (creates a new value)
#define XSPAN_0_CAST(type, var) ((var).type_cast<type>())
#define XSPAN_P_CAST(type, var) ((var).type_cast<type>())
#define XSPAN_S_CAST(type, var) ((var).type_cast<type>())
#elif WITH_XSPAN >= 1
// unchecked - just a no-op pointer wrapper, no extra functionality
@@ -114,6 +119,11 @@ using XSPAN_NAMESPACE_NAME::raw_index_bytes; // overloaded for all classes
#define XSPAN_P_VAR(type, var, first, ...) XSPAN_P(type) var((first))
#define XSPAN_S_VAR(type, var, first, ...) XSPAN_S(type) var((first))
// cast to a different type (creates a new value)
#define XSPAN_0_CAST(type, var) ((var).type_cast<type>())
#define XSPAN_P_CAST(type, var) ((var).type_cast<type>())
#define XSPAN_S_CAST(type, var) ((var).type_cast<type>())
#else // WITH_XSPAN
// unchecked regular pointers
@@ -147,6 +157,11 @@ inline R *xspan_make_helper__(R * /*dummy*/, MemBuffer &mb) noexcept {
#define XSPAN_P_VAR(type, var, first, ...) type *var = XSPAN_P_MAKE(type, (first))
#define XSPAN_S_VAR(type, var, first, ...) type *var = XSPAN_S_MAKE(type, (first))
// cast to a different type (creates a new value)
#define XSPAN_0_CAST(type, var) ((type *) (var))
#define XSPAN_P_CAST(type, var) ((type *) (var))
#define XSPAN_S_CAST(type, var) ((type *) (var))
#endif // WITH_XSPAN
/*************************************************************************
@@ -166,6 +181,10 @@ inline R *xspan_make_helper__(R * /*dummy*/, MemBuffer &mb) noexcept {
#define SPAN_0_VAR XSPAN_0_VAR
#define SPAN_P_VAR XSPAN_P_VAR
#define SPAN_S_VAR XSPAN_S_VAR
// cast to a different type (creates a new value)
#define SPAN_0_CAST XSPAN_0_CAST
#define SPAN_P_CAST XSPAN_P_CAST
#define SPAN_S_CAST XSPAN_S_CAST
#endif
/* vim:set ts=4 sw=4 et: */