a

3 files changed, 99 insertions, 0 deletions

diff --git a/compat/assert.hpp b/compat/assert.hpp
new file mode 100644
index 00000000..b2022231
--- /dev/null
+++ b/compat/assert.hpp
@@ -0,0 +1,70 @@
+#pragma once
+#include "defs.hpp"
+#include <limits>
+
+namespace Magnum::Examples {
+
+struct exception {
+    const char* file = nullptr;
+    const char* function = nullptr;
+    int line = -1;
+};
+
+struct assertion_failure final : exception
+{
+    char msg[128 - sizeof(int) - sizeof(char*)];
+};
+
+struct out_of_range final : exception {
+    ssize_t value = 0;
+    ssize_t min = std::numeric_limits<ssize_t>::min();
+    ssize_t max = std::numeric_limits<ssize_t>::max();
+};
+
+struct key_error final : exception {
+    ssize_t value = 0;
+};
+
+#define KEY_ERROR(value) \
+    ::Magnum::Examples::key_error{{__FILE__, FUNCTION_NAME, __LINE__}, (value)}
+
+#define OUT_OF_RANGE(value, min, max)                           \
+    ::Magnum::Examples::out_of_range{                           \
+        {__FILE__, FUNCTION_NAME, __LINE__},                    \
+        ::Magnum::Examples::ssize_t((value)),                   \
+        ::Magnum::Examples::ssize_t((min)),                     \
+        ::Magnum::Examples::ssize_t((max))                      \
+    }
+
+#define ABORT_WITH(exc_type, ...) ([&]() {                      \
+    exc_type _e;                                                \
+    _e.line = __LINE__;                                         \
+    _e.file = __FILE__;                                         \
+    _e.function = FUNCTION_NAME;                                \
+    std::snprintf(_e.msg, sizeof(_e.msg), __VA_ARGS__);         \
+    throw _e;/*NOLINT(misc-throw-by-value-catch-by-reference)*/ \
+}())
+
+#define ABORT(...) \
+    ABORT_WITH(::Magnum::Examples::assertion_failure, __VA_ARGS__)
+
+#define ASSERT(expr)                                            \
+    do {                                                        \
+        if (!(expr))                                            \
+            ABORT("assertion failed: '%s' in %s:%d",            \
+                  #expr, __FILE__, __LINE__);                   \
+    } while(false)
+
+#define GAME_DEBUG_OUT(pfx, ...) ([&]() {                       \
+    if constexpr (sizeof((pfx)) > 1)                            \
+        std::fputs((pfx), stderr);                              \
+    std::fprintf(stderr, __VA_ARGS__);                          \
+    std::fputs("\n", stderr);                                   \
+    std::fflush(stderr);                                        \
+}())
+
+#define WARN(...)   GAME_DEBUG_OUT("warning: ", __VA_ARGS__)
+#define ERR(...)    GAME_DEBUG_OUT("error: ", __VA_ARGS__)
+#define DEBUG(...)  GAME_DEBUG_OUT("", __VA_ARGS__)
+
+} // namespace Magnum::Examples
diff --git a/compat/defs.hpp b/compat/defs.hpp
new file mode 100644
index 00000000..cc238022
--- /dev/null
+++ b/compat/defs.hpp
@@ -0,0 +1,18 @@
+#pragma once
+#include <cstddef>
+#include <type_traits>
+
+namespace Magnum::Examples {
+
+using size_t = std::size_t;
+using ssize_t = std::make_signed_t<std::size_t>;
+
+} // namespace Magnum::Examples
+
+#ifdef _MSC_VER
+#   define FUNCTION_NAME __FUNCSIG__
+#else
+#   define FUNCTION_NAME __PRETTY_FUNCTION__
+#endif
+
+#define progn(...) [&]{__VA_ARGS__;}()
diff --git a/compat/sysexits.hpp b/compat/sysexits.hpp
new file mode 100644
index 00000000..a7a9c317
--- /dev/null
+++ b/compat/sysexits.hpp
@@ -0,0 +1,11 @@
+#pragma once
+#ifdef _WIN32
+#   define EX_OK        0   /* successful termination */
+#   define EX_USAGE     64  /* command line usage error */
+#   define EX_DATAERR   65  /* data format error */
+#   define EX_SOFTWARE  70  /* internal software error */
+#   define EX_CANTCREAT 73  /* can't create (user) output file */
+#   define EX_IOERR     74  /* input/output error */
+#else
+#   include <sysexits.h>
+#endif