Big change, detail see README.

1 files changed, 76 insertions, 0 deletions

diff --git a/meowpp/debug/assert.h b/meowpp/debug/assert.h
new file mode 100644
index 0000000..30659b7
--- /dev/null
+++ b/meowpp/debug/assert.h
@@ -0,0 +1,76 @@
+/*!
+ * @file assert.h
+ * @brief Contains assert macro for meowpp's debugging tools.
+ *
+ * You can use
+ * @code{.cpp}
+ * #define MEOWPP_NODEBUG
+ * @endcode
+ * to remove all the debugging code.
+ *
+ * @author cathook
+ */
+
+#ifndef __MEOWPP_ASSERT_H__
+#define __MEOWPP_ASSERT_H__
+
+#include <cstdio>
+#include <cstdlib>
+
+
+namespace meow {
+
+
+/*!
+ * @def Assert
+ * @brief A macro for assert whether a expression is failed or not.
+ * @param expr The expression to be tested.
+ * @param ... Error information to be printed to stderr when the expr is failed.
+ *
+ * When expression is failed, it will call `fprintf(stderr, ...)` to print out
+ * the message follows by calling `abort()` to halt the program.
+ *
+ * @note You can use
+ * @code{.cpp}
+ * #define MEOWPP_TESTING
+ * @endcode
+ * to tell this macro calls `test::abort()` instead of normal `abort()`
+ * function.
+ */
+
+
+#ifndef MEOWPP_NODEBUG
+
+#define MEOWPP_STRINGIFY(x) #x
+#define MEOWPP_TOSTRING(x) MEOWPP_STRINGIFY(x)
+
+#ifndef MEOWPP_DEBUG_ASSERT_TESTING
+
+#define Assert(expr,...) \
+  while (((expr) || \
+          (fprintf(stderr, "Assertion error at " \
+                   __FILE__ ":" MEOWPP_TOSTRING(__LINE__) \
+                   " >>>" __VA_ARGS__), \
+           abort(), false)) && false)
+
+#else  // MEOWPP_DEBUG_ASSERT_TESTING
+
+#define Assert(expr,...) \
+  while (((expr) || \
+          (fprintf(stderr, "Assertion error at " \
+                   __FILE__ ":" MEOWPP_TOSTRING(__LINE__) \
+                   " >>> " __VA_ARGS__), \
+           test::abort(), false)) && false)
+
+#endif  // MEOWPP_DEBUG_ASSERT_TESTING
+
+#else  // MEOWPP_NODEBUG
+
+#define Assert(expr,...) \
+  while (false)
+
+#endif  // MEOWPP_NODEBUG
+
+}  // meow
+
+#endif  // __MEOWPP_ASSERT_H__