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fast-path for string matching

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Nikita Smith
2024-10-30 15:42:39 -07:00
parent baead67a99
commit ee65ea3692
1 changed files with 19 additions and 9 deletions
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src/base/base_strings.c
+17 -7
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@@ -274,31 +274,41 @@ backslashed_from_str8(Arena *arena, String8 string)
//~ rjf: String Matching //~ rjf: String Matching
internal B32 internal B32
str8_match(String8 a, String8 b, StringMatchFlags flags){ str8_match(String8 a, String8 b, StringMatchFlags flags)
{
B32 result = 0; B32 result = 0;
if (a.size == b.size || (flags & StringMatchFlag_RightSideSloppy)){ if(a.size == b.size && flags == 0)
{
result = MemoryMatch(a.str, b.str, b.size);
}
else if(a.size == b.size || (flags & StringMatchFlag_RightSideSloppy))
{
B32 case_insensitive = (flags & StringMatchFlag_CaseInsensitive); B32 case_insensitive = (flags & StringMatchFlag_CaseInsensitive);
B32 slash_insensitive = (flags & StringMatchFlag_SlashInsensitive); B32 slash_insensitive = (flags & StringMatchFlag_SlashInsensitive);
U64 size = Min(a.size, b.size); U64 size = Min(a.size, b.size);
result = 1; result = 1;
for (U64 i = 0; i < size; i += 1){ for(U64 i = 0; i < size; i += 1)
{
U8 at = a.str[i]; U8 at = a.str[i];
U8 bt = b.str[i]; U8 bt = b.str[i];
if (case_insensitive){ if(case_insensitive)
{
at = char_to_upper(at); at = char_to_upper(at);
bt = char_to_upper(bt); bt = char_to_upper(bt);
} }
if (slash_insensitive){ if(slash_insensitive)
{
at = char_to_correct_slash(at); at = char_to_correct_slash(at);
bt = char_to_correct_slash(bt); bt = char_to_correct_slash(bt);
} }
if (at != bt){ if(at != bt)
{
result = 0; result = 0;
break; break;
} }
} }
} }
return(result); return result;
} }
internal U64 internal U64