Very basic Notcurses support. There are bugs! (0.37.45)

lib/ui/notcurses.fun

@@ -0,0 +1,42 @@
+#!/usr/bin/env fun
+
+/*
+ * This file is part of the Fun programming language.
+ * https://fun-lang.xyz/
+ *
+ * Copyright 2025 Johannes Findeisen <you@hanez.org>
+ * Licensed under the terms of the Apache-2.0 license.
+ * https://opensource.org/license/apache-2-0
+ *
+ * Added: 2026-01-03
+ */
+
+// Notcurses stdlib abstraction wrapping VM NC_* builtins.
+// Provides a tiny OO-style helper around nc_init/nc_clear/nc_draw_text/nc_getch/nc_shutdown.
+// If Fun was built without Notcurses support, init() returns 0 and methods are no-ops.
+
+class Notcurses()
+  // Initialize Notcurses core. Returns 1 on success, 0 on failure.
+  fun init(this)
+    return nc_init()
+
+  // Clear the screen and render. Returns 0 on success, -1 on error.
+  fun clear(this)
+    return nc_clear()
+
+  // Draw text at y, x and render. Returns 0 on success, -1 on error.
+  fun draw_text(this, y, x, text)
+    // allow flexible types
+    return nc_draw_text(to_number(y), to_number(x), to_string(text))
+
+  // Get a Unicode codepoint (int). timeout_ms<=0 blocks; >0 returns -1 if no key ready.
+  fun getch(this, timeout_ms)
+    if timeout_ms == nil
+      timeout_ms = 0
+    return nc_getch(to_number(timeout_ms))
+
+  // Shut down Notcurses, restoring the terminal.
+  fun shutdown(this)
+    return nc_shutdown()
+
+  // (banner helper removed temporarily due to parser limitations)