Reduce PROGMEM usage for sendstring LUT (#8109)

* Reduce PROGMEM usage for keycode map

Bit-pack the keycode bool array to gain back a small amount of flash space.
The trade-off is an increase in runtime instructions when running macros.

It does make the code a bit harder to read, as well as maintain.

For configs that use send_string() et al, it saves ~100 bytes.

* Switch to macro and common definition

Rewrite the array declarations so both the unpacked (original) and
packed LUT arrays can use the same value definitions. This is done by
defining a macro that "knows what to do".

This makes the code much easier to read and maintain.

* Fix macro typos and improve perf

Pack the bits in a more efficient order for extraction.
And also fix the copy/paste error in the macro...

* Switch fully to packed LUT

Some minor reformatting.
Compile tested all sendstring_xyz.h to make sure they were converted
properly. Also checked that an unconverted version would generate a
compile error.

* Apply whitespace suggestions from code review

Co-Authored-By: Ryan <fauxpark@gmail.com>

Co-authored-by: Ryan <fauxpark@gmail.com>

1 files changed, 35 insertions, 34 deletions

diff --git a/quantum/keymap_extras/sendstring_danish.h b/quantum/keymap_extras/sendstring_danish.h
index 3505a076bd..43b6a56cf8 100644
--- a/quantum/keymap_extras/sendstring_danish.h
+++ b/quantum/keymap_extras/sendstring_danish.h
@@ -19,47 +19,48 @@
 #pragma once
 
 #include "keymap_danish.h"
+#include "quantum.h"
 
 // clang-format off
 
-const bool ascii_to_shift_lut[128] PROGMEM = {
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
+const uint8_t ascii_to_shift_lut[16] PROGMEM = {
+    KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+    KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+    KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+    KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
 
-    0, 1, 1, 1, 0, 1, 1, 0,
-    1, 1, 1, 0, 0, 0, 0, 1,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 1, 1, 0, 1, 1, 1,
-    0, 1, 1, 1, 1, 1, 1, 1,
-    1, 1, 1, 1, 1, 1, 1, 1,
-    1, 1, 1, 1, 1, 1, 1, 1,
-    1, 1, 1, 0, 0, 0, 1, 1,
-    1, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0
+    KCLUT_ENTRY(0, 1, 1, 1, 0, 1, 1, 0),
+    KCLUT_ENTRY(1, 1, 1, 0, 0, 0, 0, 1),
+    KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+    KCLUT_ENTRY(0, 0, 1, 1, 0, 1, 1, 1),
+    KCLUT_ENTRY(0, 1, 1, 1, 1, 1, 1, 1),
+    KCLUT_ENTRY(1, 1, 1, 1, 1, 1, 1, 1),
+    KCLUT_ENTRY(1, 1, 1, 1, 1, 1, 1, 1),
+    KCLUT_ENTRY(1, 1, 1, 0, 0, 0, 1, 1),
+    KCLUT_ENTRY(1, 0, 0, 0, 0, 0, 0, 0),
+    KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+    KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+    KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
 };
 
-const bool ascii_to_altgr_lut[128] PROGMEM = {
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
+const uint8_t ascii_to_altgr_lut[16] PROGMEM = {
+    KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+    KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+    KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+    KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
 
-    0, 0, 0, 0, 1, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    1, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 1, 1, 1, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 1, 1, 1, 1, 0
+    KCLUT_ENTRY(0, 0, 0, 0, 1, 0, 0, 0),
+    KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+    KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+    KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+    KCLUT_ENTRY(1, 0, 0, 0, 0, 0, 0, 0),
+    KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+    KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+    KCLUT_ENTRY(0, 0, 0, 1, 1, 1, 0, 0),
+    KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+    KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+    KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+    KCLUT_ENTRY(0, 0, 0, 1, 1, 1, 1, 0),
 };
 
 const uint8_t ascii_to_keycode_lut[128] PROGMEM = {