From 012cf9c86cf91cb8354e229bde335592d41b84b2 Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Thu, 27 Apr 2023 10:32:39 -0300
Subject: Compact charsets used in trees, too.

---
 lptree.h | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

(limited to 'lptree.h')

diff --git a/lptree.h b/lptree.h
index aa331d2..b76c235 100644
--- a/lptree.h
+++ b/lptree.h
@@ -3,7 +3,7 @@
 #define lptree_h
 
 
-#include "lptypes.h" 
+#include "lptypes.h"
 
 
 /*
@@ -11,7 +11,7 @@
 */
 typedef enum TTag {
   TChar = 0,  /* 'n' = char */
-  TSet,  /* the set is stored in next CHARSETSIZE bytes */
+  TSet,  /* the set is encoded in 'u.set' and the next 'u.set.size' bytes */
   TAny,
   TTrue,
   TFalse,
@@ -52,6 +52,11 @@ typedef struct TTree {
   union {
     int ps;  /* occasional second child */
     int n;  /* occasional counter */
+    struct {
+      byte offset;  /* compact set offset (in bytes) */
+      byte size;  /* compact set size (in bytes) */
+      byte deflt;  /* default value */
+    } set;  /* for compact sets */
   } u;
 } TTree;
 
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