From a35dd91a12ab72517329e810aea69a8f50e09b48 Mon Sep 17 00:00:00 2001 From: Kim Alvefur Date: Sat, 5 Jan 2019 07:08:24 +0100 Subject: util.promise: Support delayed promise execution --- util/promise.lua | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) (limited to 'util') diff --git a/util/promise.lua b/util/promise.lua index ea30898c..c4e166ed 100644 --- a/util/promise.lua +++ b/util/promise.lua @@ -78,14 +78,20 @@ local function new_resolve_functions(p) return _resolve, _reject; end +local next_tick = function (f) + f(); +end + local function new(f) local p = setmetatable({ _state = "pending", _next = next_pending, _pending_on_fulfilled = {}, _pending_on_rejected = {} }, promise_mt); if f then - local resolve, reject = new_resolve_functions(p); - local ok, ret = xpcall(f, debug.traceback, resolve, reject); - if not ok and p._state == "pending" then - reject(ret); - end + next_tick(function() + local resolve, reject = new_resolve_functions(p); + local ok, ret = xpcall(f, debug.traceback, resolve, reject); + if not ok and p._state == "pending" then + reject(ret); + end + end); end return p; end @@ -203,4 +209,5 @@ return { race = race; try = try; is_promise = is_promise; + set_nexttick = function(new_next_tick) next_tick = new_next_tick; end; } -- cgit v1.2.3