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rewrite(phase2): fix wU16 & experiment a cached machanism

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This commit is contained in:
Khietsly Tristan 2026-02-11 17:03:40 +07:00
parent 3d32c4c87f
commit 04216ce24b
1 changed files with 17 additions and 6 deletions
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23
src/Buffer/init.luau
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@ -163,7 +163,7 @@ end
local function wU16(w: Writer, v: number)
ensureSpace(w, 2)
buffer.writei16(w.buf, w.cursor, v)
buffer.writeu16(w.buf, w.cursor, v)
w.cursor += 2
end
@ -210,6 +210,7 @@ local function wString(w: Writer, s: string)
end
local packValue: (w: Writer, v: any) -> ()
local F32_TEST_BUF = buffer.create(4)
local function packNumber(w: Writer, n: number)
if n ~= n then
@ -267,9 +268,8 @@ local function packNumber(w: Writer, n: number)
end
else
-- float: try f32 first
local testBuf = buffer.create(4)
buffer.writef32(testBuf, 0, n)
local f32Val = buffer.readf32(testBuf, 0)
buffer.writef32(F32_TEST_BUF, 0, n)
local f32Val = buffer.readf32(F32_TEST_BUF, 0)
if f32Val == n or math.abs(n - f32Val) < math.abs(n) * 1e-6 then
wByte(w, T_F32)
@ -1262,13 +1262,24 @@ local function compileReader(s: SchemaType): (buffer, number, { any }?) -> (any,
end
end
local packerCache = setmetatable({}, { __mode = "k" })
local readerCache = setmetatable({}, { __mode = "k" })
local function packStrict(w: Writer, s: SchemaType, v: any)
local packer = compilePacker(s)
local packer = packerCache[s]
if not packer then
packer = compilePacker(s)
packerCache[s] = packer
end
packer(w, v)
end
local function readStrict(buf: buffer, cursor: number, s: SchemaType, refs: { any }?): (any, number)
local reader = compileReader(s)
local reader = readerCache[s]
if not reader then
reader = compileReader(s)
readerCache[s] = reader
end
return reader(buf, cursor, refs)
end