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Safety but with less freak-outs
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1 changed files with 9 additions and 3 deletions
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@ -55,7 +55,7 @@ Promise.then_ = function(self, onFulfilled, onRejected)
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end
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end
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-- If self.state is not "pending" then error
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-- If self.state is not "pending" then error
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if self.state ~= "pending" then
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if self.state ~= "pending" then
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error("Error (Promise.then_): Promise is already " .. self.state)
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return Promise.reject("Error (Promise.then_): Promise is already " .. self.state)
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end
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end
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-- Make locals to collect the results of self.fn
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-- Make locals to collect the results of self.fn
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@ -74,9 +74,11 @@ Promise.then_ = function(self, onFulfilled, onRejected)
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-- Return a new promise with the results
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-- Return a new promise with the results
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if success and not force_reject then
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if success and not force_reject then
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onFulfilled(result[1])
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onFulfilled(result[1])
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self.state = "fulfilled"
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return Promise.resolve(result[1])
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return Promise.resolve(result[1])
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else
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else
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onRejected(result[1])
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onRejected(result[1])
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self.state = "rejected"
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return Promise.reject(success and result[1] or err)
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return Promise.reject(success and result[1] or err)
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end
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end
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end
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end
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@ -137,10 +139,10 @@ return Promise
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Promise = require "promise_tech"
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Promise = require "promise_tech"
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tmp = Promise.resolve(5)
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tmp = Promise.resolve(5)
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tmp:then_(print, nil)
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tmp:then_(print, nil):then_(print, nil):then_(print, nil)
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tmp = Promise.reject(7)
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tmp = Promise.reject(7)
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tmp:then_(nil, print)
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tmp:then_(nil, print):then_(nil, print):then_(nil, print)
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--- BIG TESTS
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--- BIG TESTS
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@ -166,4 +168,8 @@ function do_if_fails(err)
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end
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end
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test():then_(do_if_passes, do_if_fails)
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test():then_(do_if_passes, do_if_fails)
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Vx2 = 0
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test():then_(function(value) Vx2 = value end, function(value) print("caught rejection, value", value) end):
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then_(function(value) print("Sqrt is", math.sqrt(value)) end)
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if Vx2 ~= 0 then print("Vx2", Vx2) end
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]]
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]]
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