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Update function-buffer-varints.md

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docs/function-buffer-varints.md
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@ -21,13 +21,21 @@ The following are implementations of ULEB-128 reading/writing in Luau:
```lua ```lua
local function writeuleb128(stream, offset, value) local function writeuleb128(stream, offset, value)
local start = offset local start = offset
local length = buffer.len(stream)
while value >= 0x80 do while true do
if offset >= length then
error("buffer access out of bounds")
end
if value >= 0x80 then
buffer.writeu8(stream, offset, bit32.bor(bit32.band(value, 0x7f), 0x80)) buffer.writeu8(stream, offset, bit32.bor(bit32.band(value, 0x7f), 0x80))
value = bit32.rshift(value, 7) value = bit32.rshift(value, 7)
offset = offset + 1 offset = offset + 1
end else
buffer.writeu8(stream, offset, value) buffer.writeu8(stream, offset, value)
break
end
end
return (offset - start) + 1 return (offset - start) + 1
end end