Software / code / prosody
Diff
util/cache.lua @ 7435:8603b16e85c7
util.cache: Add support for creating a proxy table to a cache, that looks and acts (mostly) like a normal table. No tests yet.
| author | Matthew Wild <mwild1@gmail.com> |
|---|---|
| date | Sun, 22 May 2016 18:18:23 +0100 |
| parent | 7354:8ca7f1c2c660 |
| child | 7702:9385c367e920 |
line wrap: on
line diff
--- a/util/cache.lua Sun May 22 14:39:14 2016 +0200 +++ b/util/cache.lua Sun May 22 18:18:23 2016 +0100 @@ -116,6 +116,28 @@ return tail.key, tail.value; end +function cache_methods:table() + if not self.proxy_table then + self.proxy_table = setmetatable({}, { + __index = function (t, k) + return self:get(k); + end; + __newindex = function (t, k, v) + if not self:set(k, v) then + error("failed to insert key into cache - full"); + end + end; + __pairs = function (t) + return self:items(); + end; + __len = function (t) + return self:count(); + end; + }); + end + return self.proxy_table; +end + local function new(size, on_evict) size = assert(tonumber(size), "cache size must be a number"); size = math.floor(size);
