doylet
/
Dqn
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Nullptr check for top_mem_block on reserve

This commit is contained in:
doyle 2019-10-29 22:22:35 +11:00
parent d463fcbda8
commit a11857690f
2 changed files with 712 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

100
Code/Dqn.h
View File

@ -213,17 +213,20 @@ STBSP__PUBLICDEF void STB_SPRINTF_DECORATE(set_separators)(char comma, char peri
b = tmp; \
} while (0)
#define DQN_LEN_AND_STR(string) Dqn_CharCount(str), string
#define DQN_STR_AND_LEN(string) string, Dqn_CharCount(string)
#define DQN_STR_AND_LEN_I(string) string, (int)Dqn_CharCount(string)
#define DQN_FOR_EACH(i, limit) for (Dqn_isize (i) = 0; (i) < (Dqn_isize)(limit); ++(i))
#define DQN_FOR_EACH_REVERSE(i, limit) for (Dqn_isize (i) = (Dqn_isize)(limit-1); (i) >= 0; --(i))
#define DQN_LEN_AND_STR(string) Dqn_CharCount(str), string
#define DQN_STR_AND_LEN(string) string, Dqn_CharCount(string)
#define DQN_STR_AND_LEN_I(string) string, (int)Dqn_CharCount(string)
#define DQN_FOR_EACH(i, limit) for (Dqn_isize (i) = 0; (i) < (Dqn_isize)(limit); ++(i))
#define DQN_FOR_EACH_REVERSE(i, limit) for (Dqn_isize (i) = (Dqn_isize)(limit-1); (i) >= 0; --(i))
#define DQN_FOR_EACH_ITERATOR(it_name, array, num) for (auto it_name = array; it_name != (array + num); it_name++)
#define DQN_BYTES(val) (val)
#define DQN_KILOBYTES(val) (1024ULL * DQN_BYTES(val))
#define DQN_MEGABYTES(val) (1024ULL * DQN_KILOBYTES(val))
#define DQN_GIGABYTES(val) (1024ULL * DQN_MEGABYTES(val))
#define DQN_ARRAY_COUNT(array) (sizeof(array)/sizeof(array[0]))
#ifdef _MSC_VER
#define DEBUG_BREAK __debugbreak()
#else
@ -355,6 +358,8 @@ struct DqnDeferHelper
#define DQN_UNIQUE_NAME(prefix) DQN_TOKEN_COMBINE(prefix, __COUNTER__)
#define DQN_DEFER const auto DQN_UNIQUE_NAME(defer_lambda_) = DqnDeferHelper() + [&]()
enum struct Dqn_ZeroMem { No, Yes };
enum struct Dqn_LogType
{
Debug,
@ -389,7 +394,7 @@ Dqn_LogCallback *Dqn_log_callback;
#define DQN_LOG_D(fmt, ...) Dqn_Log(Dqn_LogType::Debug, DQN_STR_AND_LEN(__FILE__), DQN_STR_AND_LEN(__func__), __LINE__, fmt, ## __VA_ARGS__)
#define DQN_LOG_W(fmt, ...) Dqn_Log(Dqn_LogType::Warning, DQN_STR_AND_LEN(__FILE__), DQN_STR_AND_LEN(__func__), __LINE__, fmt, ## __VA_ARGS__)
#define DQN_LOG_I(fmt, ...) Dqn_Log(Dqn_LogType::Info, DQN_STR_AND_LEN(__FILE__), DQN_STR_AND_LEN(__func__), __LINE__, fmt, ## __VA_ARGS__)
#define DQN_LOG_M(fmt, ...) Dqn_Log(Dqn_LogType::Info, DQN_STR_AND_LEN(__FILE__), DQN_STR_AND_LEN(__func__), __LINE__, fmt, ## __VA_ARGS__)
#define DQN_LOG_M(fmt, ...) Dqn_Log(Dqn_LogType::Memory, DQN_STR_AND_LEN(__FILE__), DQN_STR_AND_LEN(__func__), __LINE__, fmt, ## __VA_ARGS__)
#define DQN_LOG(log_type, fmt, ...) Dqn_Log(log_type, DQN_STR_AND_LEN(__FILE__), DQN_STR_AND_LEN(__func__), __LINE__, fmt, ## __VA_ARGS__)
DQN_HEADER_COPY_END
// @ -------------------------------------------------------------------------------------------------
@ -587,14 +592,27 @@ enum struct Dqn_Allocator_Type
Heap, // Malloc, realloc, free
XHeap, // Malloc realloc, free, crash on failure
Arena,
Custom,
NullAllocator,
};
#define DQN_ALLOCATOR_ALLOCATE_PROC(name) void *name(Dqn_usize size)
#define DQN_ALLOCATOR_REALLOC_PROC(name) void *name(void *old_ptr, Dqn_usize old_size, Dqn_usize new_size)
#define DQN_ALLOCATOR_FREE_PROC(name) void name(void *ptr)
typedef DQN_ALLOCATOR_ALLOCATE_PROC(Dqn_Allocator_AllocateProc);
typedef DQN_ALLOCATOR_REALLOC_PROC(Dqn_Allocator_ReallocProc);
typedef DQN_ALLOCATOR_FREE_PROC(Dqn_Allocator_FreeProc);
struct Dqn_Allocator
{
Dqn_Allocator_Type type;
void *data;
// NOTE: Only required if type == Dqn_Allocator_Type::Custom
Dqn_Allocator_AllocateProc *allocate;
Dqn_Allocator_ReallocProc *realloc;
Dqn_Allocator_FreeProc *free;
};
DQN_HEADER_COPY_END
// @ -------------------------------------------------------------------------------------------------
@ -643,6 +661,7 @@ struct Dqn_MemArenaScopedRegion
#define DQN_DEBUG_PARAMS
#endif
#define DQN_MEM_ARENA_INIT_WITH_ALLOCATOR(arena, allocator, size) Dqn_MemArena_InitWithAllocator(arena, allocator, size DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_INIT_MEMORY(arena, src, size) Dqn_MemArena_InitMemory(arena, src, size DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_ALLOC(arena, size) Dqn_MemArena_Alloc(arena, size DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_ALLOC_ARRAY(arena, T, num) (T *)Dqn_MemArena_Alloc(arena, sizeof(T) * num DQN_DEBUG_PARAMS)
@ -887,11 +906,12 @@ DQN_HEADER_COPY_PROTOTYPE(template <Dqn_usize N> void, Dqn_StringBuilder_Free(Dq
template <typename T>
struct Dqn_Slice
{
union { T *data; T *buf; T *str; };
union { T *data; T *buf; T *str; T const *const_str; };
union { Dqn_isize size; Dqn_isize len; };
Dqn_Slice() = default;
Dqn_Slice(T *str, Dqn_isize len) { this->str = str; this->len = len; }
Dqn_Slice(T *str, Dqn_isize len) { this->str = str; this->len = len; }
Dqn_Slice(T const *str, Dqn_isize len) { this->const_str = str; this->len = len; }
T const &operator[] (Dqn_isize i) const { DQN_ASSERT_MSG(i >= 0 && i < len, "%d >= 0 && %d < %d", i, len); return data[i]; }
T &operator[] (Dqn_isize i) { DQN_ASSERT_MSG(i >= 0 && i < len, "%d >= 0 && %d < %d", i, len); return data[i]; }
@ -1438,6 +1458,13 @@ DQN_HEADER_COPY_PROTOTYPE(void *, Dqn_Allocator_Allocate(Dqn_Allocator *allocato
result = DQN_MEM_ARENA_ALLOC(arena, size);
}
break;
case Dqn_Allocator_Type::Custom:
{
if (allocator->allocate)
result = allocator->allocate(size);
}
break;
}
return result;
@ -1471,6 +1498,13 @@ DQN_HEADER_COPY_PROTOTYPE(void *, Dqn_Allocator_Realloc(Dqn_Allocator *allocator
}
}
break;
case Dqn_Allocator_Type::Custom:
{
if (allocator->realloc)
result = allocator->realloc(old_ptr, old_size, new_size);
}
break;
}
return result;
@ -1488,6 +1522,12 @@ DQN_HEADER_COPY_PROTOTYPE(void, Dqn_Allocator_Free(Dqn_Allocator *allocator, voi
}
break;
case Dqn_Allocator_Type::Custom:
{
allocator->free(ptr);
}
break;
case Dqn_Allocator_Type::Arena:
break;
}
@ -1597,8 +1637,11 @@ DQN_HEADER_COPY_PROTOTYPE(Dqn_b32, Dqn_MemArena_Reserve(Dqn_MemArena *arena, Dqn
#if defined(DQN_DEBUG_DQN_MEM_ARENA_LOGGING)
(void)file; (void)file_len; (void)func; (void)func_len; (void)line;
#endif
Dqn_usize remaining_space = arena->top_mem_block->size - arena->top_mem_block->used;
if (remaining_space >= size) return true;
if (arena->top_mem_block)
{
Dqn_usize remaining_space = arena->top_mem_block->size - arena->top_mem_block->used;
if (remaining_space >= size) return true;
}
Dqn_MemBlock *new_block = Dqn_MemArena__AllocateBlock(arena, size);
if (!new_block) return false;
@ -1606,6 +1649,18 @@ DQN_HEADER_COPY_PROTOTYPE(Dqn_b32, Dqn_MemArena_Reserve(Dqn_MemArena *arena, Dqn
return true;
}
DQN_HEADER_COPY_PROTOTYPE(void, Dqn_MemArena_InitWithAllocator(Dqn_MemArena *arena, Dqn_Allocator allocator, Dqn_usize size DQN_DEBUG_ARGS))
{
#if defined(DQN_DEBUG_DQN_MEM_ARENA_LOGGING)
(void)file; (void)file_len; (void)func; (void)func_len; (void)line;
#endif
DQN_ASSERT_MSG(size >= sizeof(*arena->curr_mem_block), "(%zu >= %zu) There needs to be enough space to encode the Dqn_MemBlock struct into the memory buffer", size, sizeof(*arena->curr_mem_block));
*arena = {};
arena->allocator = allocator;
Dqn_MemBlock *mem_block = Dqn_MemArena__AllocateBlock(arena, size);
Dqn_MemArena__AttachBlock(arena, mem_block);
}
DQN_HEADER_COPY_PROTOTYPE(void, Dqn_MemArena_InitMemory(Dqn_MemArena *arena, void *memory, Dqn_usize size DQN_DEBUG_ARGS))
{
#if defined(DQN_DEBUG_DQN_MEM_ARENA_LOGGING)
@ -1621,6 +1676,17 @@ DQN_HEADER_COPY_PROTOTYPE(void, Dqn_MemArena_InitMemory(Dqn_MemArena *arena, voi
Dqn_MemArena__AttachBlock(arena, mem_block);
}
DQN_HEADER_COPY_PROTOTYPE(void, Dqn_MemArena_ResetUsage(Dqn_MemArena *arena, Dqn_ZeroMem zero_mem))
{
for (Dqn_MemBlock *block = arena->top_mem_block; block; block = block->prev)
{
if (zero_mem == Dqn_ZeroMem::Yes)
memset(block->memory, 0, block->used);
block->used = 0;
if (!block->prev) arena->curr_mem_block = block;
}
}
DQN_HEADER_COPY_PROTOTYPE(Dqn_MemArenaScopedRegion, Dqn_MemArena_MakeScopedRegion(Dqn_MemArena *arena))
{
return Dqn_MemArenaScopedRegion(arena);
@ -2281,6 +2347,20 @@ DQN_HEADER_COPY_PROTOTYPE(char *, Dqn_File_ReadWithArena(Dqn_MemArena *arena, ch
if (file_size) *file_size = file_size_;
return result;
}
// @ -------------------------------------------------------------------------------------------------
// @
// @ NOTE: Utils
// @
// @ -------------------------------------------------------------------------------------------------
#include <time.h>
DQN_HEADER_COPY_PROTOTYPE(char *, Dqn_EpochTimeToDate(i64 timestamp, char *buf, isize buf_len))
{
time_t time = DQN_CAST(time_t)timestamp;
tm *date_time = localtime(&time);
strftime(buf, buf_len, "%c", date_time);
return buf;
}
#undef _CRT_SECURE_NO_WARNINGS
#endif // DQN_IMPLEMENTATION

622
Code/DqnHeader_Generated.h
View File

@ -0,0 +1,622 @@
// -------------------------------------------------------------------------------------------------
//
// NOTE: Typedefs, Macros, Utils
//
// -------------------------------------------------------------------------------------------------
constexpr Dqn_usize Dqn_ArrayCount(T const (&)[N]);
constexpr Dqn_isize Dqn_ArrayCountI(T const (&)[N]);
constexpr Dqn_usize Dqn_CharCount(char const (&)[N]);
constexpr Dqn_isize Dqn_CharCountI(char const (&)[N]);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Logging
//
// -------------------------------------------------------------------------------------------------
constexpr inline char const * Dqn_LogTypeTag(Dqn_LogType type);
// NOTE: Set the callback to get called whenever a log message has been printed
#define DQN_LOG_CALLBACK(name) void name(Dqn_LogType type, char const *file, Dqn_usize file_len, char const *func, Dqn_usize func_len, Dqn_usize line, char const *log_str)
typedef DQN_LOG_CALLBACK(Dqn_LogCallback);
Dqn_LogCallback *Dqn_log_callback;
#define DQN_LOG_E(fmt, ...) Dqn_Log(Dqn_LogType::Error, DQN_STR_AND_LEN(__FILE__), DQN_STR_AND_LEN(__func__), __LINE__, fmt, ## __VA_ARGS__)
#define DQN_LOG_D(fmt, ...) Dqn_Log(Dqn_LogType::Debug, DQN_STR_AND_LEN(__FILE__), DQN_STR_AND_LEN(__func__), __LINE__, fmt, ## __VA_ARGS__)
#define DQN_LOG_W(fmt, ...) Dqn_Log(Dqn_LogType::Warning, DQN_STR_AND_LEN(__FILE__), DQN_STR_AND_LEN(__func__), __LINE__, fmt, ## __VA_ARGS__)
#define DQN_LOG_I(fmt, ...) Dqn_Log(Dqn_LogType::Info, DQN_STR_AND_LEN(__FILE__), DQN_STR_AND_LEN(__func__), __LINE__, fmt, ## __VA_ARGS__)
#define DQN_LOG_M(fmt, ...) Dqn_Log(Dqn_LogType::Memory, DQN_STR_AND_LEN(__FILE__), DQN_STR_AND_LEN(__func__), __LINE__, fmt, ## __VA_ARGS__)
#define DQN_LOG(log_type, fmt, ...) Dqn_Log(log_type, DQN_STR_AND_LEN(__FILE__), DQN_STR_AND_LEN(__func__), __LINE__, fmt, ## __VA_ARGS__)
// -------------------------------------------------------------------------------------------------
//
// NOTE: Math
//
// -------------------------------------------------------------------------------------------------
union Dqn_V2I
{
struct { Dqn_i32 x, y; };
struct { Dqn_i32 w, h; };
struct { Dqn_i32 min, max; };
Dqn_i32 e[2];
Dqn_V2I() = default;
constexpr Dqn_V2I(Dqn_f32 x_, Dqn_f32 y_): x((Dqn_i32)x_), y((Dqn_i32)y_) {}
constexpr Dqn_V2I(Dqn_i32 x_, Dqn_i32 y_): x(x_), y(y_) {}
constexpr Dqn_V2I(Dqn_i32 xy): x(xy), y(xy) {}
constexpr bool operator!=(Dqn_V2I other) const { return !(*this == other); }
constexpr bool operator==(Dqn_V2I other) const { return (x == other.x) && (y == other.y); }
constexpr bool operator>=(Dqn_V2I other) const { return (x >= other.x) && (y >= other.y); }
constexpr bool operator<=(Dqn_V2I other) const { return (x <= other.x) && (y <= other.y); }
constexpr bool operator< (Dqn_V2I other) const { return (x < other.x) && (y < other.y); }
constexpr bool operator> (Dqn_V2I other) const { return (x > other.x) && (y > other.y); }
constexpr Dqn_V2I operator- (Dqn_V2I other) const { Dqn_V2I result(x - other.x, y - other.y); return result; }
constexpr Dqn_V2I operator+ (Dqn_V2I other) const { Dqn_V2I result(x + other.x, y + other.y); return result; }
constexpr Dqn_V2I operator* (Dqn_V2I other) const { Dqn_V2I result(x * other.x, y * other.y); return result; }
constexpr Dqn_V2I operator* (Dqn_f32 other) const { Dqn_V2I result(x * other, y * other); return result; }
constexpr Dqn_V2I operator* (Dqn_i32 other) const { Dqn_V2I result(x * other, y * other); return result; }
constexpr Dqn_V2I operator/ (Dqn_V2I other) const { Dqn_V2I result(x / other.x, y / other.y); return result; }
constexpr Dqn_V2I operator/ (Dqn_f32 other) const { Dqn_V2I result(x / other, y / other); return result; }
constexpr Dqn_V2I operator/ (Dqn_i32 other) const { Dqn_V2I result(x / other, y / other); return result; }
constexpr Dqn_V2I &operator*=(Dqn_V2I other) { *this = *this * other; return *this; }
constexpr Dqn_V2I &operator*=(Dqn_f32 other) { *this = *this * other; return *this; }
constexpr Dqn_V2I &operator*=(Dqn_i32 other) { *this = *this * other; return *this; }
constexpr Dqn_V2I &operator-=(Dqn_V2I other) { *this = *this - other; return *this; }
constexpr Dqn_V2I &operator+=(Dqn_V2I other) { *this = *this + other; return *this; }
};
union Dqn_V2
{
struct { Dqn_f32 x, y; };
struct { Dqn_f32 w, h; };
struct { Dqn_f32 min, max; };
Dqn_f32 e[2];
Dqn_V2() = default;
constexpr Dqn_V2(Dqn_f32 a) : x(a), y(a) {}
constexpr Dqn_V2(Dqn_i32 a) : x((Dqn_f32)a), y((Dqn_f32)a) {}
constexpr Dqn_V2(Dqn_f32 x_, Dqn_f32 y_): x(x_), y(y_) {}
constexpr Dqn_V2(Dqn_i32 x_, Dqn_i32 y_): x((Dqn_f32)x_), y((Dqn_f32)y_) {}
constexpr Dqn_V2(Dqn_V2I a) : x((Dqn_f32)a.x), y((Dqn_f32)a.y) {}
constexpr bool operator!=(Dqn_V2 other) const { return !(*this == other); }
constexpr bool operator==(Dqn_V2 other) const { return (x == other.x) && (y == other.y); }
constexpr bool operator>=(Dqn_V2 other) const { return (x >= other.x) && (y >= other.y); }
constexpr bool operator<=(Dqn_V2 other) const { return (x <= other.x) && (y <= other.y); }
constexpr bool operator< (Dqn_V2 other) const { return (x < other.x) && (y < other.y); }
constexpr bool operator> (Dqn_V2 other) const { return (x > other.x) && (y > other.y); }
constexpr Dqn_V2 operator- (Dqn_V2 other) const { Dqn_V2 result(x - other.x, y - other.y); return result; }
constexpr Dqn_V2 operator+ (Dqn_V2 other) const { Dqn_V2 result(x + other.x, y + other.y); return result; }
constexpr Dqn_V2 operator* (Dqn_V2 other) const { Dqn_V2 result(x * other.x, y * other.y); return result; }
constexpr Dqn_V2 operator* (Dqn_f32 other) const { Dqn_V2 result(x * other, y * other); return result; }
constexpr Dqn_V2 operator* (Dqn_i32 other) const { Dqn_V2 result(x * other, y * other); return result; }
constexpr Dqn_V2 operator/ (Dqn_V2 other) const { Dqn_V2 result(x / other.x, y / other.y); return result; }
constexpr Dqn_V2 operator/ (Dqn_f32 other) const { Dqn_V2 result(x / other, y / other); return result; }
constexpr Dqn_V2 operator/ (Dqn_i32 other) const { Dqn_V2 result(x / other, y / other); return result; }
constexpr Dqn_V2 &operator*=(Dqn_V2 other) { *this = *this * other; return *this; }
constexpr Dqn_V2 &operator*=(Dqn_f32 other) { *this = *this * other; return *this; }
constexpr Dqn_V2 &operator*=(Dqn_i32 other) { *this = *this * other; return *this; }
constexpr Dqn_V2 &operator/=(Dqn_V2 other) { *this = *this / other; return *this; }
constexpr Dqn_V2 &operator/=(Dqn_f32 other) { *this = *this / other; return *this; }
constexpr Dqn_V2 &operator/=(Dqn_i32 other) { *this = *this / other; return *this; }
constexpr Dqn_V2 &operator-=(Dqn_V2 other) { *this = *this - other; return *this; }
constexpr Dqn_V2 &operator+=(Dqn_V2 other) { *this = *this + other; return *this; }
};
union Dqn_V3
{
struct { Dqn_f32 x, y, z; };
struct { Dqn_f32 r, g, b; };
Dqn_V2 xy;
Dqn_f32 e[3];
Dqn_V3() = default;
constexpr Dqn_V3(Dqn_f32 a) : x(a), y(a), z(a) {}
constexpr Dqn_V3(Dqn_i32 a) : x((Dqn_f32)a), y((Dqn_f32)a), z((Dqn_f32)a) {}
constexpr Dqn_V3(Dqn_f32 x_, Dqn_f32 y_, Dqn_f32 z_): x(x_), y(y_), z(z_) {}
constexpr Dqn_V3(Dqn_i32 x_, Dqn_i32 y_, Dqn_f32 z_): x((Dqn_f32)x_), y((Dqn_f32)y_), z((Dqn_f32)z_) {}
constexpr Dqn_V3(Dqn_V2 xy, Dqn_f32 z_) : x(xy.x), y(xy.y), z(z_) {}
constexpr bool operator!= (Dqn_V3 other) const { return !(*this == other); }
constexpr bool operator== (Dqn_V3 other) const { return (x == other.x) && (y == other.y) && (z == other.z); }
constexpr bool operator>= (Dqn_V3 other) const { return (x >= other.x) && (y >= other.y) && (z >= other.z); }
constexpr bool operator<= (Dqn_V3 other) const { return (x <= other.x) && (y <= other.y) && (z <= other.z); }
constexpr bool operator< (Dqn_V3 other) const { return (x < other.x) && (y < other.y) && (z < other.z); }
constexpr bool operator> (Dqn_V3 other) const { return (x > other.x) && (y > other.y) && (z > other.z); }
constexpr Dqn_V3 operator- (Dqn_V3 other) const { Dqn_V3 result(x - other.x, y - other.y, z - other.z); return result; }
constexpr Dqn_V3 operator+ (Dqn_V3 other) const { Dqn_V3 result(x + other.x, y + other.y, z + other.z); return result; }
constexpr Dqn_V3 operator* (Dqn_V3 other) const { Dqn_V3 result(x * other.x, y * other.y, z * other.z); return result; }
constexpr Dqn_V3 operator* (Dqn_f32 other) const { Dqn_V3 result(x * other, y * other, z * other); return result; }
constexpr Dqn_V3 operator* (Dqn_i32 other) const { Dqn_V3 result(x * other, y * other, z * other); return result; }
constexpr Dqn_V3 operator/ (Dqn_V3 other) const { Dqn_V3 result(x / other.x, y / other.y, z / other.z); return result; }
constexpr Dqn_V3 operator/ (Dqn_f32 other) const { Dqn_V3 result(x / other, y / other, z / other); return result; }
constexpr Dqn_V3 operator/ (Dqn_i32 other) const { Dqn_V3 result(x / other, y / other, z / other); return result; }
constexpr Dqn_V3 &operator*=(Dqn_V3 other) { *this = *this * other; return *this; }
constexpr Dqn_V3 &operator*=(Dqn_f32 other) { *this = *this * other; return *this; }
constexpr Dqn_V3 &operator*=(Dqn_i32 other) { *this = *this * other; return *this; }
constexpr Dqn_V3 &operator/=(Dqn_V3 other) { *this = *this / other; return *this; }
constexpr Dqn_V3 &operator/=(Dqn_f32 other) { *this = *this / other; return *this; }
constexpr Dqn_V3 &operator/=(Dqn_i32 other) { *this = *this / other; return *this; }
constexpr Dqn_V3 &operator-=(Dqn_V3 other) { *this = *this - other; return *this; }
constexpr Dqn_V3 &operator+=(Dqn_V3 other) { *this = *this + other; return *this; }
};
union Dqn_V4
{
struct { Dqn_f32 x, y, z, w; };
struct { Dqn_f32 r, g, b, a; };
Dqn_V3 rgb;
Dqn_f32 e[4];
Dqn_V4() = default;
constexpr Dqn_V4(Dqn_f32 xyzw) : x(xyzw), y(xyzw), z(xyzw), w(xyzw) {}
constexpr Dqn_V4(Dqn_f32 x_, Dqn_f32 y_, Dqn_f32 z_, Dqn_f32 w_): x(x_), y(y_), z(z_), w(w_) {}
constexpr Dqn_V4(Dqn_i32 x_, Dqn_i32 y_, Dqn_i32 z_, Dqn_i32 w_): x((Dqn_f32)x_), y((Dqn_f32)y_), z((Dqn_f32)z_), w((Dqn_f32)w_) {}
constexpr Dqn_V4(Dqn_V3 xyz, Dqn_f32 w_) : x(xyz.x), y(xyz.y), z(xyz.z), w(w_) {}
constexpr bool operator!=(Dqn_V4 other) const { return !(*this == other); }
constexpr bool operator==(Dqn_V4 other) const { return (x == other.x) && (y == other.y) && (z == other.z) && (w == other.w); }
constexpr bool operator>=(Dqn_V4 other) const { return (x >= other.x) && (y >= other.y) && (z >= other.z) && (w >= other.w); }
constexpr bool operator<=(Dqn_V4 other) const { return (x <= other.x) && (y <= other.y) && (z <= other.z) && (w <= other.w); }
constexpr bool operator< (Dqn_V4 other) const { return (x < other.x) && (y < other.y) && (z < other.z) && (w < other.w); }
constexpr bool operator> (Dqn_V4 other) const { return (x > other.x) && (y > other.y) && (z > other.z) && (w > other.w); }
constexpr Dqn_V4 operator- (Dqn_V4 other) const { Dqn_V4 result(x - other.x, y - other.y, z - other.z, w - other.w); return result; }
constexpr Dqn_V4 operator+ (Dqn_V4 other) const { Dqn_V4 result(x + other.x, y + other.y, z + other.z, w + other.w); return result; }
constexpr Dqn_V4 operator* (Dqn_V4 other) const { Dqn_V4 result(x * other.x, y * other.y, z * other.z, w * other.w); return result; }
constexpr Dqn_V4 operator* (Dqn_f32 other) const { Dqn_V4 result(x * other, y * other, z * other, w * other); return result; }
constexpr Dqn_V4 operator* (Dqn_i32 other) const { Dqn_V4 result(x * other, y * other, z * other, w * other); return result; }
constexpr Dqn_V4 operator/ (Dqn_f32 other) const { Dqn_V4 result(x / other, y / other, z / other, w / other); return result; }
constexpr Dqn_V4 &operator*=(Dqn_V4 other) { *this = *this * other; return *this; }
constexpr Dqn_V4 &operator*=(Dqn_f32 other) { *this = *this * other; return *this; }
constexpr Dqn_V4 &operator*=(Dqn_i32 other) { *this = *this * other; return *this; }
constexpr Dqn_V4 &operator-=(Dqn_V4 other) { *this = *this - other; return *this; }
constexpr Dqn_V4 &operator+=(Dqn_V4 other) { *this = *this + other; return *this; }
};
struct Dqn_Rect
{
Dqn_V2 min, max;
Dqn_Rect() = default;
Dqn_Rect(Dqn_V2 min, Dqn_V2 max) : min(min), max(max) {}
Dqn_Rect(Dqn_V2I min, Dqn_V2I max) : min(min), max(max) {}
};
struct Dqn_RectI32
{
Dqn_V2I min, max;
Dqn_RectI32() = default;
Dqn_RectI32(Dqn_V2I min, Dqn_V2I max) : min(min), max(max) {}
};
union Dqn_Mat4
{
Dqn_f32 e[16];
Dqn_V4 row[4];
Dqn_f32 row_major[4][4];
Dqn_f32 operator[](Dqn_usize i) const { return e[i]; }
};
template <typename T> int Dqn_MemCmpType(T const *ptr1, T const *ptr2);
template <typename T> T * Dqn_MemZero(T *src);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_Allocator
//
// -------------------------------------------------------------------------------------------------
// NOTE: The default allocator is the heap allocator
enum struct Dqn_Allocator_Type
{
Heap, // Malloc, realloc, free
XHeap, // Malloc realloc, free, crash on failure
Arena,
Custom,
NullAllocator,
};
#define DQN_ALLOCATOR_ALLOCATE_PROC(name) void *name(Dqn_usize size)
#define DQN_ALLOCATOR_REALLOC_PROC(name) void *name(void *old_ptr, Dqn_usize old_size, Dqn_usize new_size)
#define DQN_ALLOCATOR_FREE_PROC(name) void name(void *ptr)
typedef DQN_ALLOCATOR_ALLOCATE_PROC(Dqn_Allocator_AllocateProc);
typedef DQN_ALLOCATOR_REALLOC_PROC(Dqn_Allocator_ReallocProc);
typedef DQN_ALLOCATOR_FREE_PROC(Dqn_Allocator_FreeProc);
struct Dqn_Allocator
{
Dqn_Allocator_Type type;
void *data;
// NOTE: Only required if type == Dqn_Allocator_Type::Custom
Dqn_Allocator_AllocateProc *allocate;
Dqn_Allocator_ReallocProc *realloc;
Dqn_Allocator_FreeProc *free;
};
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_MemArena
//
// -------------------------------------------------------------------------------------------------
struct Dqn_MemBlock
{
void *memory;
Dqn_usize size;
Dqn_usize used;
Dqn_MemBlock *prev;
Dqn_MemBlock *next;
};
struct Dqn_MemArena
{
// NOTE: Configuration (fill once after "Zero Initialisation {}")
int min_block_size = DQN_KILOBYTES(4);
Dqn_Allocator allocator;
// NOTE: Read Only
Dqn_MemBlock *curr_mem_block;
Dqn_MemBlock *top_mem_block;
Dqn_usize highest_used_mark;
int total_allocated_mem_blocks;
};
struct Dqn_MemArenaScopedRegion
{
Dqn_MemArenaScopedRegion(Dqn_MemArena *arena);
~Dqn_MemArenaScopedRegion();
Dqn_MemArena *arena;
Dqn_MemBlock *curr_mem_block;
Dqn_usize curr_mem_block_used;
Dqn_MemBlock *top_mem_block;
};
#if defined(DQN_DEBUG_DQN_MEM_ARENA_LOGGING)
#define DQN_DEBUG_ARGS , char const *file, Dqn_isize file_len, char const *func, Dqn_isize func_len, Dqn_isize line
#define DQN_DEBUG_PARAMS , DQN_STR_AND_LEN(__FILE__), DQN_STR_AND_LEN(__func__), __LINE__
#else
#define DQN_DEBUG_ARGS
#define DQN_DEBUG_PARAMS
#endif
#define DQN_MEM_ARENA_INIT_WITH_ALLOCATOR(arena, allocator, size) Dqn_MemArena_InitWithAllocator(arena, allocator, size DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_INIT_MEMORY(arena, src, size) Dqn_MemArena_InitMemory(arena, src, size DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_ALLOC(arena, size) Dqn_MemArena_Alloc(arena, size DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_ALLOC_ARRAY(arena, T, num) (T *)Dqn_MemArena_Alloc(arena, sizeof(T) * num DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_ALLOC_STRUCT(arena, T) (T *)Dqn_MemArena_Alloc(arena, sizeof(T) DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_RESERVE(arena, size) Dqn_MemArena_Reserve(arena, size DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_FREE(arena) Dqn_MemArena_Free(arena)
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_Allocator
//
// -------------------------------------------------------------------------------------------------
Dqn_Allocator inline Dqn_Allocator_NullAllocator();
Dqn_Allocator inline Dqn_Allocator_HeapAllocator();
Dqn_Allocator inline Dqn_Allocator_XHeapAllocator();
Dqn_Allocator inline Dqn_Allocator_ArenaAllocator(Dqn_MemArena *arena);
// -------------------------------------------------------------------------------------------------
//
// NOTE: String Builder
//
// -------------------------------------------------------------------------------------------------
struct Dqn_StringBuilderBuffer
{
char *mem;
Dqn_usize size;
usize used;
Dqn_StringBuilderBuffer *next;
};
Dqn_usize constexpr DQN_STRING_BUILDER_MIN_MEM_BUF_ALLOC_SIZE = DQN_KILOBYTES(4);
template <Dqn_usize N = DQN_KILOBYTES(16)>
struct Dqn_StringBuilder
{
Dqn_Allocator allocator;
char fixed_mem[N];
Dqn_usize fixed_mem_used;
Dqn_StringBuilderBuffer *next_mem_buf;
Dqn_StringBuilderBuffer *last_mem_buf;
Dqn_isize string_len;
};
// The necessary length to build the string, it returns the length including the null-terminator
template <Dqn_usize N> Dqn_isize Dqn_StringBuilder_BuildLen(Dqn_StringBuilder<N> const *builder);
template <Dqn_usize N> void Dqn_StringBuilder_BuildInBuffer(Dqn_StringBuilder<N> const *builder, char *dest, Dqn_usize dest_size);
template <Dqn_usize N> char * Dqn_StringBuilder_BuildFromMalloc(Dqn_StringBuilder<N> *builder, Dqn_isize *len = nullptr);
template <Dqn_usize N> char * Dqn_StringBuilder_BuildFromArena(Dqn_StringBuilder<N> *builder, Dqn_MemArena *arena, Dqn_isize *len = nullptr);
template <Dqn_usize N> void Dqn_StringBuilder_VFmtAppend(Dqn_StringBuilder<N> *builder, char const *fmt, va_list va);
template <Dqn_usize N> void Dqn_StringBuilder_FmtAppend(Dqn_StringBuilder<N> *builder, char const *fmt, ...);
template <Dqn_usize N> void Dqn_StringBuilder_Append(Dqn_StringBuilder<N> *builder, char const *str, Dqn_isize len = -1);
template <Dqn_usize N> void Dqn_StringBuilder_AppendChar(Dqn_StringBuilder<N> *builder, char ch);
template <Dqn_usize N> void Dqn_StringBuilder_Free(Dqn_StringBuilder<N> *builder);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_Slices
//
// -------------------------------------------------------------------------------------------------
template <typename T> inline Dqn_Slice<T> Dqn_Slice_CopyNullTerminated(Dqn_MemArena *arena, T const *src, Dqn_isize len);
template <typename T> inline Dqn_Slice<T> Dqn_Slice_CopyNullTerminated(Dqn_MemArena *arena, Dqn_Slice<T> const src);
template <typename T> inline Dqn_Slice<T> Dqn_Slice_Copy(Dqn_MemArena *arena, T const *src, Dqn_isize len);
template <typename T> inline Dqn_Slice<T> Dqn_Slice_Copy(Dqn_MemArena *arena, Dqn_Slice<T> const src);
template <typename T> inline bool Dqn_Slice_Equals(Dqn_Slice<T> const a, Dqn_Slice<T> const b);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_Asprintf (Allocate Sprintf)
//
// -------------------------------------------------------------------------------------------------
template <typename T> Dqn_Slice<char> Dqn_AsprintfSlice(T *arena, char const *fmt, va_list va);
template <typename T> Dqn_Slice<char> Dqn_AsprintfSlice(T *arena, char const *fmt, ...);
template <typename T> char * Dqn_Asprintf(T *arena, int *len, char const *fmt, ...);
template <typename T> char * Dqn_Asprintf(T *arena, char const *fmt, ...);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_FixedArray
//
// -------------------------------------------------------------------------------------------------
#define DQN_FIXED_ARRAY_TEMPLATE template <typename T, int MAX_>
#define DQN_FIXED_ARRAY_TEMPLATE_DECL Dqn_FixedArray<T, MAX_>
DQN_FIXED_ARRAY_TEMPLATE struct Dqn_FixedArray
{
T data[MAX_];
Dqn_isize len;
T &operator[] (Dqn_isize i) { DQN_ASSERT_MSG(i >= 0 && i <= len, "%jd >= 0 && %jd < %jd", i, len); return data[i]; }
T *begin () { return data; }
T *end () { return data + len; }
T *operator+ (Dqn_isize i) { DQN_ASSERT_MSG(i >= 0 && i <= len, "%jd >= 0 && %jd < %jd", i, len); return data + i; }
T const &operator[] (Dqn_isize i) const { DQN_ASSERT_MSG(i >= 0 && i <= len, "%jd >= 0 && %jd < %jd", i, i, len); return data[i]; }
T const *begin () const { return data; }
T const *end () const { return data + len; }
T const *operator+ (Dqn_isize i) const { DQN_ASSERT_MSG(i >= 0 && i <= len, "%jd >= 0 && %jd < %jd", i, len); return data + i; }
};
int Dqn_FixedArray_Capacity(DQN_FIXED_ARRAY_TEMPLATE_DECL *);
DQN_FIXED_ARRAY_TEMPLATE_DECL Dqn_FixedArray_Init(T const *item, int num);
T * Dqn_FixedArray_Add(DQN_FIXED_ARRAY_TEMPLATE_DECL *a, T const *items, Dqn_isize num);
T * Dqn_FixedArray_Add(DQN_FIXED_ARRAY_TEMPLATE_DECL *a, T const item);
T * Dqn_FixedArray_Make(DQN_FIXED_ARRAY_TEMPLATE_DECL *a, Dqn_isize num);
void Dqn_FixedArray_Clear(DQN_FIXED_ARRAY_TEMPLATE_DECL *a);
void Dqn_FixedArray_EraseStable(DQN_FIXED_ARRAY_TEMPLATE_DECL *a, Dqn_isize index);
void Dqn_FixedArray_EraseUnstable(DQN_FIXED_ARRAY_TEMPLATE_DECL *a, Dqn_isize index);
void Dqn_FixedArray_Pop(DQN_FIXED_ARRAY_TEMPLATE_DECL *a, Dqn_isize num);
T * Dqn_FixedArray_Peek(DQN_FIXED_ARRAY_TEMPLATE_DECL *a);
Dqn_isize Dqn_FixedArray_GetIndex(DQN_FIXED_ARRAY_TEMPLATE_DECL *a, T const *entry);
T * Dqn_FixedArray_Find(DQN_FIXED_ARRAY_TEMPLATE_DECL *a, EqualityProc IsEqual);
T * Dqn_FixedArray_Find(DQN_FIXED_ARRAY_TEMPLATE_DECL *a, T *find);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_FixedStack
//
// -------------------------------------------------------------------------------------------------
template <typename T, int MAX_> using Dqn_FixedStack = DQN_FIXED_ARRAY_TEMPLATE_DECL;
template <typename T, int MAX_> T Dqn_FixedStack_Pop (Dqn_FixedStack<T, MAX_> *array) { T result = *Dqn_FixedArray_Peek(array); Dqn_FixedArray_Pop(array, 1); return result; }
template <typename T, int MAX_> T *Dqn_FixedStack_Peek (Dqn_FixedStack<T, MAX_> *array) { return Dqn_FixedArray_Peek(array); }
template <typename T, int MAX_> T *Dqn_FixedStack_Push (Dqn_FixedStack<T, MAX_> *array, T item) { return Dqn_FixedArray_Add(array, item); }
template <typename T, int MAX_> void Dqn_FixedStack_Clear(Dqn_FixedStack<T, MAX_> *array) { Dqn_FixedArray_Clear(array); }
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_Array
//
// -------------------------------------------------------------------------------------------------
// TODO(doyle): Make this either initialised from memory or dynamically allocating
template <typename T> struct Dqn_Array
{
Dqn_Allocator allocator;
T *data;
Dqn_isize len;
Dqn_isize max;
T const operator[](Dqn_isize i) const { DQN_ASSERT_MSG(i >= 0 && i < len, "%d >= 0 && %d < %d", i, len); return data[i]; }
T operator[](Dqn_isize i) { DQN_ASSERT_MSG(i >= 0 && i < len, "%d >= 0 && %d < %d", i, len); return data[i]; }
T const *begin () const { return data; }
T const *end () const { return data + len; }
T *begin () { return data; }
T *end () { return data + len; }
T const *operator+(Dqn_isize i) const { DQN_ASSERT_MSG(i >= 0 && i < len, "%d >= 0 && %d < %d", i, len); return data + i; }
T *operator+(Dqn_isize i) { DQN_ASSERT_MSG(i >= 0 && i < len, "%d >= 0 && %d < %d", i, len); return data + i; }
};
template <typename T> Dqn_Array<T> Dqn_Array_InitMemory(T *memory, Dqn_isize max, Dqn_isize len = 0);
template <typename T> bool Dqn_Array_Reserve(Dqn_Array<T> *a, Dqn_isize size);
template <typename T> void Dqn_Array_Free(Dqn_Array<T> *a);
template <typename T> T * Dqn_Array_Add(Dqn_Array<T> *a, T const *items, Dqn_isize num);
template <typename T> T * Dqn_Array_Add(Dqn_Array<T> *a, T const item);
template <typename T> T * Dqn_Array_Make(Dqn_Array<T> *a, Dqn_isize num);
template <typename T> void Dqn_Array_Clear(Dqn_Array<T> *a, bool zero_mem = false);
template <typename T> void Dqn_Array_EraseStable(Dqn_Array<T> *a, Dqn_isize index);
template <typename T> void Dqn_Array_EraseUnstable(Dqn_Array<T> *a, Dqn_isize index);
template <typename T> void Dqn_Array_Pop(Dqn_Array<T> *a, Dqn_isize num);
template <typename T> T * Dqn_Array_Peek(Dqn_Array<T> *a);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_FixedString
//
// -------------------------------------------------------------------------------------------------
template <Dqn_isize MAX_>
struct Dqn_FixedString
{
union { char data[MAX_]; char str[MAX_]; char buf[MAX_]; };
Dqn_isize len;
Dqn_FixedString() { data[0] = 0; len = 0; }
Dqn_FixedString(char const *fmt, ...)
{
*this = {};
va_list va;
va_start(va, fmt);
Dqn_FixedString_AppendVFmt(this, fmt, va);
va_end(va);
}
Dqn_b32 operator==(Dqn_FixedString const &other) const
{
if (len != other.len) return false;
bool result = memcmp(data, other.data, len);
return result;
}
Dqn_b32 operator!=(Dqn_FixedString const &other) const { return !(*this == other); }
char const &operator[] (Dqn_isize i) const { DQN_ASSERT_MSG(i >= 0 && i < len, "%d >= 0 && %d < %d", i, len); return data[i]; }
char &operator[] (Dqn_isize i) { DQN_ASSERT_MSG(i >= 0 && i < len, "%d >= 0 && %d < %d", i, len); return data[i]; }
char const *begin () const { return data; }
char const *end () const { return data + len; }
char *begin () { return data; }
char *end () { return data + len; }
};
template <Dqn_isize MAX_> int Dqn_FixedString_Capacity(Dqn_FixedString<MAX_> *);
template <Dqn_isize MAX_> void Dqn_FixedString_Clear(Dqn_FixedString<MAX_> *str);
template <Dqn_isize MAX_> Dqn_b32 Dqn_FixedString_AppendVFmt(Dqn_FixedString<MAX_> *str, char const *fmt, va_list va);
template <Dqn_isize MAX_> Dqn_b32 Dqn_FixedString_AppendFmt(Dqn_FixedString<MAX_> *str, char const *fmt, ...);
template <Dqn_isize MAX_> Dqn_b32 Dqn_FixedString_Append(Dqn_FixedString<MAX_> *str, char const *src, Dqn_isize len = -1);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_U64Str
//
// -------------------------------------------------------------------------------------------------
struct Dqn_U64Str
{
// Points to the start of the str in the buffer, not necessarily buf since
// we write into the buffer in reverse
char *str;
char buf[27]; // NOTE(doyle): 27 is the maximum size of Dqn_u64 including commas
int len;
};
// -------------------------------------------------------------------------------------------------
//
// NOTE: Logging
//
// -------------------------------------------------------------------------------------------------
void Dqn_LogV(Dqn_LogType type, char const *file, Dqn_usize file_len, char const *func, Dqn_usize func_len, Dqn_usize line, char const *fmt, va_list va);
// return: This returns a boolean as a hack so you can combine it in if expressions. I use it for my IF_ASSERT macro
Dqn_b32 Dqn_Log(Dqn_LogType type, char const *file, Dqn_usize file_len, char const *func, Dqn_usize func_len, Dqn_usize line, char const *fmt, ...);
void * Dqn_Allocator_Allocate(Dqn_Allocator *allocator, Dqn_usize size);
void * Dqn_Allocator_Realloc(Dqn_Allocator *allocator, void *old_ptr, Dqn_isize old_size, Dqn_isize new_size);
void Dqn_Allocator_Free(Dqn_Allocator *allocator, void *ptr);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_MemArena
//
// -------------------------------------------------------------------------------------------------
void * Dqn_MemArena_Alloc(Dqn_MemArena *arena, Dqn_usize size DQN_DEBUG_ARGS);
void Dqn_MemArena_Free(Dqn_MemArena *arena DQN_DEBUG_ARGS);
Dqn_b32 Dqn_MemArena_Reserve(Dqn_MemArena *arena, Dqn_usize size DQN_DEBUG_ARGS);
void Dqn_MemArena_InitWithAllocator(Dqn_MemArena *arena, Dqn_Allocator allocator, Dqn_usize size DQN_DEBUG_ARGS);
void Dqn_MemArena_InitMemory(Dqn_MemArena *arena, void *memory, Dqn_usize size DQN_DEBUG_ARGS);
void Dqn_MemArena_ResetUsage(Dqn_MemArena *arena, Dqn_ZeroMem zero_mem);
Dqn_MemArenaScopedRegion Dqn_MemArena_MakeScopedRegion(Dqn_MemArena *arena);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Vectors
//
// -------------------------------------------------------------------------------------------------
Dqn_V2I Dqn_V2_ToV2I(Dqn_V2 a);
Dqn_V2 Dqn_V2_Max(Dqn_V2 a, Dqn_V2 b);
Dqn_V2 Dqn_V2_Abs(Dqn_V2 a);
Dqn_f32 Dqn_V2_Dot(Dqn_V2 a, Dqn_V2 b);
Dqn_f32 Dqn_V2_LengthSq(Dqn_V2 a, Dqn_V2 b);
Dqn_V2 Dqn_V2_Normalise(Dqn_V2 a);
Dqn_V2 Dqn_V2_Perpendicular(Dqn_V2 a);
Dqn_f32 Dqn_V4_Dot(Dqn_V4 const *a, Dqn_V4 const *b);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Rect
//
// -------------------------------------------------------------------------------------------------
Dqn_Rect Dqn_Rect_InitFromPosAndSize(Dqn_V2 pos, Dqn_V2 size);
Dqn_V2 Dqn_Rect_Center(Dqn_Rect rect);
Dqn_b32 Dqn_Rect_ContainsPoint(Dqn_Rect rect, Dqn_V2 p);
Dqn_b32 Dqn_Rect_ContainsRect(Dqn_Rect a, Dqn_Rect b);
Dqn_V2 Dqn_Rect_Size(Dqn_Rect rect);
Dqn_Rect Dqn_Rect_Move(Dqn_Rect src, Dqn_V2 move_amount);
Dqn_Rect Dqn_Rect_Union(Dqn_Rect a, Dqn_Rect b);
Dqn_Rect Dqn_Rect_FromRectI32(Dqn_RectI32 a);
Dqn_V2I Dqn_RectI32_Size(Dqn_RectI32 rect);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Math Utils
//
// -------------------------------------------------------------------------------------------------
Dqn_V2 Dqn_LerpV2(Dqn_V2 a, Dqn_f32 t, Dqn_V2 b);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_Mat4
//
// -------------------------------------------------------------------------------------------------
Dqn_Mat4 Dqn_Mat4_Identity();
Dqn_Mat4 Dqn_Mat4_Scale3f(Dqn_f32 x, Dqn_f32 y, Dqn_f32 z);
Dqn_Mat4 Dqn_Mat4_ScaleV3(Dqn_V3 vec);
Dqn_Mat4 Dqn_Mat4_Translate3f(Dqn_f32 x, Dqn_f32 y, Dqn_f32 z);
Dqn_Mat4 Dqn_Mat4_TranslateV3(Dqn_V3 vec);
Dqn_Mat4 operator*(Dqn_Mat4 const &a, Dqn_Mat4 const &b);
Dqn_V4 operator*(Dqn_Mat4 const &mat, Dqn_V4 const &vec);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Helper Functions
//
// -------------------------------------------------------------------------------------------------
void Dqn_Bit_UnsetInplace(Dqn_u32 *flags, Dqn_u32 bitfield);
void Dqn_Bit_SetInplace(Dqn_u32 *flags, Dqn_u32 bitfield);
Dqn_b32 Dqn_Bit_IsSet(Dqn_u32 flags, Dqn_u32 bitfield);
Dqn_b32 Dqn_Bit_IsNotSet(Dqn_u32 flags, Dqn_u32 bitfield);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Safe Arithmetic
//
// -------------------------------------------------------------------------------------------------
Dqn_i64 Dqn_Safe_AddI64(Dqn_i64 a, Dqn_i64 b);
Dqn_i64 Dqn_Safe_MulI64(Dqn_i64 a, Dqn_i64 b);
Dqn_u64 Dqn_Safe_AddU64(Dqn_u64 a, Dqn_u64 b);
Dqn_u64 Dqn_Safe_MulU64(Dqn_u64 a, Dqn_u64 b);
int Dqn_Safe_TruncateISizeToInt(Dqn_isize val);
Dqn_i32 Dqn_Safe_TruncateISizeToI32(Dqn_isize val);
Dqn_i8 Dqn_Safe_TruncateISizeToI8(Dqn_isize val);
Dqn_u32 Dqn_Safe_TruncateUSizeToU32(Dqn_u64 val);
int Dqn_Safe_TruncateUSizeToI32(Dqn_usize val);
int Dqn_Safe_TruncateUSizeToInt(Dqn_usize val);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Char Helpers
//
// -------------------------------------------------------------------------------------------------
Dqn_b32 Dqn_Char_IsAlpha(char ch);
Dqn_b32 Dqn_Char_IsDigit(char ch);
Dqn_b32 Dqn_Char_IsAlphaNum(char ch);
Dqn_b32 Dqn_Char_IsWhitespace(char ch);
// -------------------------------------------------------------------------------------------------
//
// NOTE: String Helpers
//
// -------------------------------------------------------------------------------------------------
Dqn_b32 Dqn_Str_Equals(char const *a, char const *b, Dqn_isize a_len = -1, Dqn_isize b_len = -1);
char const * Dqn_Str_FindMulti(char const *buf, char const *find_list[], Dqn_isize const *find_string_lens, Dqn_isize find_len, Dqn_isize *match_index, Dqn_isize buf_len = -1);
char const * Dqn_Str_Find(char const *buf, char const *find, Dqn_isize buf_len = -1, Dqn_isize find_len = -1);
Dqn_b32 Dqn_Str_Match(char const *src, char const *find, int find_len);
char const * Dqn_Str_SkipToChar(char const *src, char ch);
char const * Dqn_Str_SkipToNextAlphaNum(char const *src);
char const * Dqn_Str_SkipToNextDigit(char const *src);
char const * Dqn_Str_SkipToNextChar(char const *src);
char const * Dqn_Str_SkipToNextWord(char const *src);
char const * Dqn_Str_SkipToNextWhitespace(char const *src);
char const * Dqn_Str_SkipWhitespace(char const *src);
char const * Dqn_Str_SkipToCharInPlace(char const **src, char ch);
char const * Dqn_Str_SkipToNextAlphaNumInPlace(char const **src);
char const * Dqn_Str_SkipToNextCharInPlace(char const **src);
char const * Dqn_Str_SkipToNextWhitespaceInPlace(char const **src);
char const * Dqn_Str_SkipToNextWordInPlace(char const **src);
char const * Dqn_Str_SkipWhitespaceInPlace(char const **src);
Dqn_u64 Dqn_Str_ToU64(char const *buf, int len = -1);
Dqn_i64 Dqn_Str_ToI64(char const *buf, int len = -1);
// -------------------------------------------------------------------------------------------------
//
// NOTE: File
//
// -------------------------------------------------------------------------------------------------
char * Dqn_File_ReadWithArena(Dqn_MemArena *arena, char const *file, Dqn_isize *file_size);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Utils
//
// -------------------------------------------------------------------------------------------------
char * Dqn_EpochTimeToDate(i64 timestamp, char *buf, isize buf_len);