regex engine - replace many attribute arrays with one

This replaces PL_regnode_arg_len, PL_regnode_arg_len_varies,
PL_regnode_off_by_arg and PL_regnode_kind with a single PL_regnode_info
array, which is an array of struct regnode_meta, which contains the same
data but as a struct. Since PL_regnode_name is only used in debugging
builds of the regex engine we keep it separate. If we add more debug
properties it might be good to create a PL_regnode_debug_info[] to hold
that data instead.

This means when we add new properties we do not need to modify any
secondary sources to add new properites, just the struct definition
and regen/regcomp.pl

1 files changed, 7 insertions, 0 deletions

diff --git a/regexp.h b/regexp.h
index 7bd7162d33..230488f03d 100644
--- a/regexp.h
+++ b/regexp.h
@@ -22,6 +22,13 @@
 
 typedef SSize_t regnode_offset;
 
+struct regnode_meta {
+    U8 type;
+    U8 arg_len;
+    U8 arg_len_varies;
+    U8 off_by_arg;
+};
+
 struct regnode {
     U8	flags;
     U8  type;