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Merge pull request #779 from MihailRis/fix-bytearray-view-classes

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fix bytearray view classes
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MihailRis 2026-02-08 16:49:32 +03:00 • committed by GitHub
commit 1ae2ec62d8
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1 changed files with 15 additions and 14 deletions
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29
res/modules/internal/bytearray.lua
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@ -231,44 +231,45 @@ local function FFIBytearray_as_string(bytes)
end end
local function create_FFIview_class(name, typename, typesize) local function create_FFIview_class(name, typename, typesize)
local FFIU16view_mt = { local ptrtype = typename .. "*"
local FFIview_mt = {
__index = function(self, key) __index = function(self, key)
if key <= 0 or key > self.size then if key == 'size' then
return self.bytes.size / typesize
end
if key <= 0 or key > self.bytes.size / typesize then
return return
end end
return self.ptr[key - 1] local ptr = FFI.cast(ptrtype, self.bytes.bytes)
return ptr[key - 1]
end, end,
__newindex = function(self, key, value) __newindex = function(self, key, value)
if key == self.size + 1 then if key <= 0 or key > self.bytes.size / typesize then
return append(self, value)
elseif key <= 0 or key > self.size then
return return
end end
self.ptr[key - 1] = value local ptr = FFI.cast(ptrtype, self.bytes.bytes)
ptr[key - 1] = value
end, end,
__len = function(self) __len = function(self)
return self.size return self.bytes.size / typesize
end, end,
__tostring = function(self) __tostring = function(self)
return string.format(name .. "[%s]{...}", tonumber(self.size)) return string.format(name .. "[%s]{...}", tonumber(self.bytes.size / typesize))
end, end,
__ipairs = function(self) __ipairs = function(self)
local i = 0 local i = 0
return function() return function()
i = i + 1 i = i + 1
if i <= self.size then if i <= self.bytes.size / typesize then
return i, self.ptr[i - 1] return i, self.ptr[i - 1]
end end
end end
end end
} }
return function (bytes) return function (bytes)
local ptr = FFI.cast(typename .. "*", bytes.bytes)
local x = setmetatable({ local x = setmetatable({
bytes=bytes, bytes=bytes,
ptr=ptr, }, FFIview_mt)
size=math.floor(bytes.size / typesize),
}, FFIU16view_mt)
return x return x
end end
end end