From 31f7f1db984eefb67be19e6e7fe68102147337bb Mon Sep 17 00:00:00 2001
From: Andreas Fankhauser hiddenalpha.ch
Date: Fri, 2 Jan 2026 17:20:48 +0100
Subject: Add an abstract Logger.

---
 include/qntan/Qntan.h | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

(limited to 'include/qntan/Qntan.h')

diff --git a/include/qntan/Qntan.h b/include/qntan/Qntan.h
index 075c7f9..f28d19a 100644
--- a/include/qntan/Qntan.h
+++ b/include/qntan/Qntan.h
@@ -55,6 +55,7 @@ struct Qntan_Mallocator;
 struct Qntan_MemArena;
 struct Qntan_Executor;
 struct Qntan_Scheduler;
+struct Qntan_Logger;
 struct Qntan_IoMux;
 struct Qntan_File;
 struct Qntan_FileSystem;
@@ -258,6 +259,36 @@ struct Qntan_Scheduler {
 
 
 
+struct Qntan_Logger {
+	/* Logger impls MUST prefer format specifiers that are specified in
+	 * stdio printf and related functions.
+	 * Logger impls SHOULD NOT implement format specifiers that could be
+	 * confused by standard specifiers specified by stdio printf and
+	 * related APIs.
+	 */
+	void (*fatal)( struct Qntan_Logger**, char const*fmt, ...);
+	/**/
+	void (*error)( struct Qntan_Logger**, char const*fmt, ...);
+	/**/
+	void (*warn)( struct Qntan_Logger**, char const*fmt, ...);
+	/**/
+	void (*info)( struct Qntan_Logger**, char const*fmt, ...);
+	/**/
+	void (*debug)( struct Qntan_Logger**, char const*fmt, ...);
+	/**/
+	void (*trace)( struct Qntan_Logger**, char const*fmt, ...);
+	/**/
+};
+
+
+
+
+
+
+
+
+
+
 struct Qntan_IoMux {
 	/* An IO Multiplexer.
 	 *
-- 
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