drewcassidy/nvidia-texture-tools
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Add defer helper.

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This commit is contained in:
Ignacio 2020-03-30 10:06:10 -07:00
parent e5740ccb32
commit 4f0ecc4506
2 changed files with 7 additions and 8 deletions
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4
src/nvcore/FileSystem.cpp
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@ -81,11 +81,11 @@ bool FileSystem::copyFile(const char * src, const char * dst) {
FILE * fsrc = fileOpen(src, "rb"); FILE * fsrc = fileOpen(src, "rb");
if (fsrc == NULL) return false; if (fsrc == NULL) return false;
NV_ON_RETURN(fclose(fsrc)); defer{ fclose(fsrc); };
FILE * fdst = fileOpen(dst, "wb"); FILE * fdst = fileOpen(dst, "wb");
if (fdst == NULL) return false; if (fdst == NULL) return false;
NV_ON_RETURN(fclose(fdst)); defer{ fclose(fdst); };
char buffer[1024]; char buffer[1024];
size_t n; size_t n;

11
src/nvcore/nvcore.h
View File

@ -326,14 +326,13 @@ namespace nv {
F f; F f;
}; };
template <typename F> struct ExitScopeHelp {
ScopeExit<F> MakeScopeExit(F f) { template<typename T>
return ScopeExit<F>(f); ScopeExit<T> operator+(T t) { return t; }
}; };
} }
#define NV_ON_RETURN(code) \ #define defer const auto& __attribute__((unused)) NV_STRING_JOIN2(defer__, __LINE__) = nv::ExitScopeHelp() + [&]()
auto NV_STRING_JOIN2(scope_exit_, __LINE__) = nv::MakeScopeExit([=](){code;})
// Indicate the compiler that the parameter is not used to suppress compier warnings. // Indicate the compiler that the parameter is not used to suppress compier warnings.