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[TextEncoder] 3x faster in hot loops

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This commit is contained in:
Jarred Sumner
2022-05-21 02:15:46 -07:00
committed by Jarred Sumner
parent 9fcc5f27e8
commit f0e58fec49
21 changed files with 752 additions and 133 deletions
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7
src/string_immutable.zig
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@@ -974,7 +974,7 @@ pub fn toUTF8AllocWithType(allocator: std.mem.Allocator, comptime Type: type, ut
utf16_remaining = utf16_remaining[replacement.len..];
const count: usize = replacement.utf8Width();
try list.ensureUnusedCapacity(i + count);
try list.ensureTotalCapacityPrecise(i + count + list.items.len + @floatToInt(usize, (@intToFloat(f64, @truncate(u52, utf16_remaining.len)) * 1.2)));
list.items.len += i;
copyU16IntoU8(
@@ -992,12 +992,13 @@ pub fn toUTF8AllocWithType(allocator: std.mem.Allocator, comptime Type: type, ut
);
}
try list.ensureUnusedCapacity(utf16_remaining.len);
try list.ensureTotalCapacityPrecise(utf16_remaining.len + list.items.len);
const old_len = list.items.len;
list.items.len += utf16_remaining.len;
copyU16IntoU8(list.items[old_len..], Type, utf16_remaining);
return list.toOwnedSlice();
// don't call toOwnedSlice() because our
return list.items;
}
pub const EncodeIntoResult = struct {