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Lazy hot path lookup for entities #1150

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Lazy hot path lookup for entities #1150

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12 changes: 9 additions & 3 deletions src/entities.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2077,6 +2077,8 @@ static const entity entities[] =
{ NULL, VERS_UNKNOWN, 0 },
};

static entity* entity_lookup_by_initial[128];

/*
** Pure static implementation. Trades off lookup speed
** for faster setup time (well, none actually).
Expand All @@ -2094,12 +2096,16 @@ static const entity* entitiesLookup( ctmbstr s )
const entity *np = entities;
if (ch == 0)
return NULL;
while (np->name)
{

if (entity_lookup_by_initial[ch] == 0) {
while (np->name) {
if (ch == *np->name)
break; /* stop when first letter matches */
break; /* stop when first letter matches */
np++;
}
entity_lookup_by_initial[ch] = np;
}
np = entity_lookup_by_initial[ch];
while (np->name)
{
if (ch != *np->name)
Expand Down