add ffi-reflect doc

meta/3rd/ffi-reflect/config.json

@@ -0,0 +1,3 @@
+{
+
+}

meta/3rd/ffi-reflect/library/reflect.lua

@@ -0,0 +1,128 @@
+---@meta
+
+---@alias ffi.typeinfo.what "int"
+---|"void"
+---|"float"
+---|"enum"
+---|"constant"
+---|"ptr"
+---|"ref"
+---|"array"
+---|"struct"
+---|"union"
+---|"func"
+---|"field"
+---|"bitfield"
+---|"typedef"
+
+---@class ffi.typeinfo
+---@field what ffi.typeinfo.what
+
+---@class ffi.enuminfo : ffi.typeinfo
+---@field name string?
+---@field size number|string
+---@field alignment number
+---@field type ffi.typeinfo
+local enuminfo = {}
+
+---@return ffi.constantinfo[]
+function enuminfo:values()
+end
+
+---@return ffi.constantinfo
+function enuminfo:value(name_or_index)
+end
+
+---@class ffi.funcinfo : ffi.typeinfo
+---@field name string?
+---@field sym_name string?
+---@field return_type ffi.funcinfo
+---@field nargs integer
+---@field vararg boolean
+---@field sse_reg_params boolean
+---@field convention "cdecl"|"thiscall"|"fastcall"|"stdcall"
+local funcinfo = {}
+
+---@return ffi.fieldinfo[]
+function funcinfo:arguments()
+end
+
+---@return ffi.fieldinfo
+function funcinfo:argument(name_or_index)
+end
+
+---@class ffi.unioninfo : ffi.typeinfo
+---@field name string?
+---@field size integer
+---@field alignment number
+---@field const boolean
+---@field volatile boolean
+---@field transparent boolean
+local unioninfo = {}
+
+---@return ffi.typeinfo[]
+function unioninfo:members()
+end
+
+---@return ffi.typeinfo
+function unioninfo:member(name_or_index)
+end
+
+---@class ffi.structinfo : ffi.unioninfo
+---@field vla boolean
+
+---@class ffi.floatinfo : ffi.typeinfo
+---@field size integer
+---@field alignment number
+---@field const boolean
+---@field volatile boolean
+
+---@alias ffi.voidinfo ffi.floatinfo
+
+---@class ffi.intinfo : ffi.floatinfo
+---@field bool boolean
+---@field unsigned boolean
+---@field long boolean
+
+---@class ffi.constantinfo : ffi.typeinfo
+---@field name string?
+---@field type ffi.typeinfo
+---@field value integer
+
+---@class ffi.ptrinfo : ffi.typeinfo
+---@field size integer
+---@field alignment number
+---@field const boolean
+---@field volatile boolean
+---@field element_type ffi.typeinfo
+
+---@alias ffi.refinfo ffi.ptrinfo
+
+---@class ffi.arrayinfo : ffi.ptrinfo
+---@field vla boolean
+---@field vector boolean
+---@field complex boolean
+
+---@class ffi.fieldinfo : ffi.typeinfo
+---@field name string?
+---@field offset number
+---@field type ffi.typeinfo
+
+---@class ffi.bitfield : ffi.fieldinfo
+---@field size integer|string
+
+local reflect = {}
+
+---reflection cdata c defined
+---@param v ffi.cdata*
+---@return ffi.typeinfo
+function reflect.typeof(v)
+end
+
+---try get cdata metatable
+---@param v ffi.cdata*
+---@return table
+function reflect.getmetatable(v)
+end
+
+return reflect