assert: custom implementation

1 files changed, 31 insertions, 0 deletions

diff --git a/src/assert.hh b/src/assert.hh
new file mode 100644
index 00000000..c1bfd66b
--- /dev/null
+++ b/src/assert.hh
@@ -0,0 +1,31 @@
+#ifndef assert_hh_INCLUDED
+#define assert_hh_INCLUDED
+
+#include "exception.hh"
+
+namespace Kakoune
+{
+
+struct assert_failed : logic_error
+{
+    assert_failed(const std::string& message);
+    std::string description() const;
+
+private:
+    std::string m_message;
+};
+
+}
+
+#define STRINGIFY(X) #X
+#define TOSTRING(X) STRINGIFY(X)
+
+#ifdef assert
+#undef assert
+#endif
+
+#define assert(condition) \
+    if (not (condition)) \
+        throw assert_failed("assert failed \"" #condition "\" at " __FILE__ ":" TOSTRING(__LINE__))
+
+#endif // assert_hh_INCLUDED