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-rw-r--r--src/log.h57
1 files changed, 57 insertions, 0 deletions
diff --git a/src/log.h b/src/log.h
new file mode 100644
index 0000000000..45c8fdbfd8
--- /dev/null
+++ b/src/log.h
@@ -0,0 +1,57 @@
+#ifndef NEOVIM_LOG_H
+#define NEOVIM_LOG_H
+
+#include <stdbool.h>
+
+#include "func_attr.h"
+
+#define DEBUG_LOG_LEVEL 0
+#define INFO_LOG_LEVEL 1
+#define WARNING_LOG_LEVEL 2
+#define ERROR_LOG_LEVEL 3
+
+bool do_log(int log_level, const char *func_name, int line_num,
+ const char* fmt, ...) FUNC_ATTR_UNUSED;
+
+#define DLOG(...)
+#define ILOG(...)
+#define WLOG(...)
+#define ELOG(...)
+
+// Logging is disabled if NDEBUG or DISABLE_LOG is defined.
+#ifdef NDEBUG
+# define DISABLE_LOG
+#endif
+
+// MIN_LOG_LEVEL can be defined during compilation to adjust the desired level
+// of logging. DEBUG_LOG_LEVEL is used by default.
+#ifndef MIN_LOG_LEVEL
+# define MIN_LOG_LEVEL DEBUG_LOG_LEVEL
+#endif
+
+#ifndef DISABLE_LOG
+
+# if MIN_LOG_LEVEL <= DEBUG_LOG_LEVEL
+# undef DLOG
+# define DLOG(...) do_log(DEBUG_LOG_LEVEL, __func__, __LINE__, __VA_ARGS__)
+# endif
+
+# if MIN_LOG_LEVEL <= INFO_LOG_LEVEL
+# undef ILOG
+# define ILOG(...) do_log(INFO_LOG_LEVEL, __func__, __LINE__, __VA_ARGS__)
+# endif
+
+# if MIN_LOG_LEVEL <= WARNING_LOG_LEVEL
+# undef WLOG
+# define WLOG(...) do_log(WARNING_LOG_LEVEL, __func__, __LINE__, __VA_ARGS__)
+# endif
+
+# if MIN_LOG_LEVEL <= ERROR_LOG_LEVEL
+# undef ELOG
+# define ELOG(...) do_log(ERROR_LOG_LEVEL, __func__, __LINE__, __VA_ARGS__)
+# endif
+
+#endif
+
+#endif // NEOVIM_LOG_H
+