Platform.spells.own

调用方式

Platform.spells.own(record, fields, built)

记录依赖项 Platform.spells.own，然后按该名称调用。带命名空间的调用不会传入 self：请使用冒号调用，或自行传入该对象。

作用

Returns a record holding only the expected fields, each checked by type. A record it did not build itself, a table with a metatable or a non-table goes through copy; a plain table the caller built is checked and stripped of unexpected keys in place. Fails like copy, with "restricted-value" or "invalid-api-result".

参数

名称	类型	作用
`record`	`any`	Native result table, or a table the caller built from a legacy multi-value return.
`fields`	`table`	Map of field name to expected type name.
`built`	`boolean \| nil`	True when the caller built record itself, so it may be modified in place.

返回值

1	`table \| nil`	Record holding only the expected fields; nil on failure.
2	`string \| nil`	Reason on failure.

版本

内置辅助函数在每个版本上都会注册。不同的是它们读取的游戏 API；某个 API 缺失时，辅助函数会改用后备方案，或返回 nil 并附上原因。

它不直接读取任何游戏 API。

秘密值（正式服和永久服）

在正式服和永久服上，游戏交给插件的是秘密值。此辅助函数会检查它读取的内容（addon.Platform:CanReadValue），遇到无法比较的秘密值时返回 nil 并附上原因（例如 restricted-value），而不是返回该秘密值。请将 nil 视为不可用，而不是假。

插件如何调用它

Platform.spells.GetSpellCharges

local charges,why=own(record,chargeFields,built)

Platform.spells.GetSpellCooldown

local cooldown, why = own(record, cooldownFields, built)

依赖项

copy → Platform.spells.copy
platform (builtin:Platform/spells.lua:platform)

源码

Platform/spells.lua，第 65 行。在游戏中为只读；“复制”会生成一份可编辑的副本。

Platform.spells.own(record, fields, built)

    if not built then return copy(record, fields) end
    if not platform:CanReadValue(record) then return nil, "restricted-value" end
    if type(record) ~= "table" or getmetatable(record) ~= nil then return copy(record, fields) end
    for key, kind in pairs(fields) do
        local value = record[key]
        if not platform:CanReadValue(value) then return nil, "restricted-value" end
        if value ~= nil then
            if type(value) ~= kind and not (kind == "icon" and (type(value) == "number" or type(value) == "string")) then
                return nil, "invalid-api-result"
            end
            if type(value) == "number" and (value ~= value or value == math.huge or value == -math.huge) then
                return nil, "invalid-api-result"
            end
        end
    end
    local key = next(record)
    while key ~= nil do
        local following = next(record, key)
        if fields[key] == nil then record[key] = nil end
        key = following
    end
    return record

返回函数参考