gb.hpp - #ifndef for many macros
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gingerBill
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@ -6,7 +6,7 @@ library | latest version | category | languages | description
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----------------|----------------|----------|-----------|-------------
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**gb_string.h** | 0.93 | strings | C, C++ | A better string library for C & C++
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**gb_ini.h** | 0.91 | misc | C, C++ | A simple ini file loader library for C & C++
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**gb.hpp** | 0.20 | misc | C++11 | (Experimental) A C++11 helper library without STL geared towards game development
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**gb.hpp** | 0.20a | misc | C++11 | (Experimental) A C++11 helper library without STL geared towards game development
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## FAQ
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82
gb.hpp
82
gb.hpp
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@ -1,8 +1,9 @@
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// gb.hpp - v0.20 - public domain C++11 helper library - no warranty implied; use at your own risk
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// gb.hpp - v0.20a - public domain C++11 helper library - no warranty implied; use at your own risk
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// (Experimental) A C++11 helper library without STL geared towards game development
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/*
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Version History:
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0.20a - #ifndef for many macros
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0.20 - Angle
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0.19 - Cache friendly Transform and String fixes
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0.18 - Hash_Table bug fixes
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@ -65,6 +66,7 @@ Context:
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- Complex
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- Quaternion
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- Matrix(2,3,4)
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- Angle
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- Euler_Angles
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- Transform
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- Aabb
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@ -74,12 +76,6 @@ Context:
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- Functions & Constants
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- Type Functions
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- Random
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- Generator_Type
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- Geneartor Definition (Template/Concept)
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- Mt19937_32
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- Mt19937_64
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- Random_Device
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- Functions
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*/
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#ifndef GB_INCLUDE_GB_HPP
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@ -91,17 +87,20 @@ Context:
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// NOTE(bill): Because static means three different things in C/C++
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// Great Design(!)
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#ifndef global
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#define global static
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#define internal static
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#define local_persist static
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#endif
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#if defined(_MSC_VER)
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#define _ALLOW_KEYWORD_MACROS
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#endif
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#if !defined(alignof) // Needed for MSVC 2013 'cause Microsoft "loves" standards
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#ifndef alignof // Needed for MSVC 2013 'cause Microsoft "loves" standards
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#define alignof(x) __alignof(x)
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#endif
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#endif
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////////////////////////////////
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/// ///
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@ -109,16 +108,26 @@ Context:
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/// ///
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////////////////////////////////
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#if defined(_WIN32) || defined(_WIN64)
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#ifndef GB_SYSTEM_WINDOWS
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#define GB_SYSTEM_WINDOWS 1
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#endif
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#elif defined(__APPLE__) && defined(__MACH__)
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#ifndef GB_SYSTEM_OSX
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#define GB_SYSTEM_OSX 1
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#endif
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#elif defined(__unix__)
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#ifndef GB_SYSTEM_UNIX
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#define GB_SYSTEM_UNIX 1
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#endif
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#if defined(__linux__)
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#ifndef GB_SYSTEM_LINUX
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#define GB_SYSTEM_LINUX 1
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#endif
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#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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#ifndef GB_SYSTEM_FREEBSD
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#define GB_SYSTEM_FREEBSD 1
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#endif
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#else
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#error This UNIX operating system is not supported by gb.hpp
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#endif
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@ -133,21 +142,30 @@ Context:
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////////////////////////////////
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#if defined(_WIN32) || defined(_WIN64)
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#if defined(_WIN64)
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#ifndef GB_ARCH_64_BIT
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#define GB_ARCH_64_BIT 1
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#endif
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#else
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#ifndef GB_ARCH_32_BIT
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#define GB_ARCH_32_BIT 1
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#endif
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#endif
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#endif
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// TODO(bill): Check if this KEPLER_ENVIRONMENT works on clang
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#if defined(__GNUC__)
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#if defined(__x86_64__) || defined(__ppc64__)
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#ifndef GB_ARCH_64_BIT
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#define GB_ARCH_64_BIT 1
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#endif
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#else
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#ifndef GB_ARCH_32_BIT
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#define GB_ARCH_32_BIT 1
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#endif
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#endif
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#endif
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// TODO(bill): Get this to work
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// #if !defined(GB_LITTLE_EDIAN) && !defined(GB_BIG_EDIAN)
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// // Source: http://sourceforge.net/p/predef/wiki/Endianness/
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@ -225,20 +243,20 @@ Context:
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#include <sys/time.h>
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#endif
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#if !defined(NDEBUG)
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#define GB_ASSERT(x, ...) ((void)(::gb__assert_handler((x), #x, __FILE__, __LINE__, ##__VA_ARGS__)))
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#else
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#define GB_ASSERT(x, ...) ((void)sizeof(x))
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#endif
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#if !defined(GB_ARRAY_BOUND_CHECKING)
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#ifndef GB_ARRAY_BOUND_CHECKING
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#define GB_ARRAY_BOUND_CHECKING 1
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#endif
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#ifndef GB_DISABLE_COPY
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#define GB_DISABLE_COPY(Type) \
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Type(const Type&) = delete; \
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Type& operator=(const Type&) = delete
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#endif
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#if !defined(GB_ASSERT)
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#if !defined(NDEBUG)
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#define GB_ASSERT(x, ...) ((void)(::gb__assert_handler((x), #x, __FILE__, __LINE__, ##__VA_ARGS__)))
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/// Helper function used as a better alternative to assert which allows for
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/// optional printf style error messages
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@ -265,13 +283,17 @@ gb__assert_handler(bool condition, const char* condition_str,
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*(int*)0 = 0;
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}
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#else
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#define GB_ASSERT(x, ...) ((void)sizeof(x))
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#endif
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#endif
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////////////////////////////////
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/// ///
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/// snprintf_msvc ///
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/// ///
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////////////////////////////////
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#if defined(_MSC_VER)
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extern "C" inline int
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gb__vsnprintf_compatible(char* buffer, size_t size, const char* format, va_list args)
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{
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@ -298,7 +320,6 @@ gb__snprintf_compatible(char* buffer, size_t size, const char* format, ...)
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#define snprintf gb__snprintf_compatible
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#define vsnprintf gb__vsnprintf_compatible
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#endif // GB_DO_NOT_USE_MSVC_SPRINTF_FIX
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#endif
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#if !defined(__GB_NAMESPACE_PREFIX) && !defined(GB_NO_GB_NAMESPACE)
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@ -327,7 +348,8 @@ __GB_NAMESPACE_START
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////////////////////////////////
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#ifndef GB_BASIC_TYPES
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#define GB_BASIC_TYPES
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#if defined(_MSC_VER)
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using u8 = unsigned __int8;
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using s8 = signed __int8;
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@ -390,6 +412,9 @@ using uintptr = uintptr_t;
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using ptrdiff = ptrdiff_t;
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#endif
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#if !defined(GB_U8_MIN)
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#define GB_U8_MIN 0u
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#define GB_U8_MAX 0xffu
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#define GB_S8_MIN (-0x7f - 1)
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@ -409,14 +434,15 @@ using ptrdiff = ptrdiff_t;
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#define GB_U64_MAX 0xffffffffffffffffull
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#define GB_S64_MIN (-0x7fffffffffffffffll - 1)
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#define GB_S64_MAX 0x7fffffffffffffffll
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#endif
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#if defined(GB_ARCH_64_BIT)
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#if defined(GB_ARCH_64_BIT) && !defined(GB_USIZE_MIX)
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#define GB_USIZE_MIX GB_U64_MIN
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#define GB_USIZE_MAX GB_U64_MAX
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#define GB_SSIZE_MIX GB_S64_MIN
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#define GB_SSIZE_MAX GB_S64_MAX
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#elif defined(GB_ARCH_32_BIT)
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#elif defined(GB_ARCH_32_BIT) && !defined(GB_USIZE_MIX)
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#define GB_USIZE_MIX GB_U32_MIN
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#define GB_USIZE_MAX GB_U32_MAX
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@ -424,7 +450,7 @@ using ptrdiff = ptrdiff_t;
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#define GB_SSIZE_MAX GB_S32_MAX
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#endif
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#if defined(GB_BASIC_WITHOUT_NAMESPACE)
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#if defined(GB_BASIC_WITHOUT_NAMESPACE) && !defined(U8_MIN)
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#define U8_MIN 0u
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#define U8_MAX 0xffu
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#define S8_MIN (-0x7f - 1)
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@ -445,13 +471,13 @@ using ptrdiff = ptrdiff_t;
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#define S64_MIN (-0x7fffffffffffffffll - 1)
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#define S64_MAX 0x7fffffffffffffffll
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#if defined(GB_ARCH_64_BIT)
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#if defined(GB_ARCH_64_BIT) && !defined(GB_USIZE_MIX)
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#define USIZE_MIX U64_MIN
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#define USIZE_MAX U64_MAX
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#define SSIZE_MIX S64_MIN
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#define SSIZE_MAX S64_MAX
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#elif defined(GB_ARCH_32_BIT)
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#elif defined(GB_ARCH_32_BIT) && !defined(GB_USIZE_MIX)
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#define USIZE_MIX U32_MIN
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#define USIZE_MAX U32_MAX
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@ -564,12 +590,16 @@ move(T&& t)
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{
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return static_cast<Remove_Reference<T>&&>(t);
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}
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__GB_NAMESPACE_END
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////////////////////////////////
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/// ///
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/// Defer ///
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/// ///
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////////////////////////////////
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#ifndef GB_DEFER
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#define GB_DEFER
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__GB_NAMESPACE_START
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namespace impl
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{
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template <typename Func>
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@ -592,11 +622,14 @@ __GB_NAMESPACE_END
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#define GB_DEFER_2(x, y) GB_DEFER_1(x, y)
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#define GB_DEFER_3(x) GB_DEFER_2(GB_DEFER_2(GB_DEFER_2(x, __COUNTER__), _), __LINE__)
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#define defer(code) auto GB_DEFER_3(_defer_) = __GB_NAMESPACE_PREFIX::impl::defer_func([&](){code;})
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#endif
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#if !defined(GB_CASTS_WITHOUT_NAMESPACE)
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__GB_NAMESPACE_START
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#endif // GB_CASTS_WITHOUT_NAMESPACE
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#ifndef GB_SPECIAL_CASTS
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#define GB_SPECIAL_CASTS
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// IMPORTANT NOTE(bill): Very similar to doing `*(T*)(&u)` but easier/clearer to write
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// however, it can be dangerous if sizeof(T) > sizeof(U) e.g. unintialized memory, undefined behavior
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// *(T*)(&u) ~~ pseudo_cast<T>(u)
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@ -618,6 +651,7 @@ bit_cast(const Source& source)
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::memcpy(&dest, &source, sizeof(Dest));
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return dest;
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}
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#endif
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// FORENOTE(bill): There used to be a magic_cast that was equivalent to
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// a C-style cast but I removed it as I could not get it work as intented
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