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47 lines
1.3 KiB
Lua
47 lines
1.3 KiB
Lua
local Observable = require "rx.observable"
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local Subscription = require "rx.subscription"
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--- Returns a new Observable that produces the values produced by all the specified Observables in
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-- the order they are produced.
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-- @arg {Observable...} sources - One or more Observables to merge.
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-- @returns {Observable}
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function Observable:merge(...)
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local sources = {...}
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table.insert(sources, 1, self)
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return Observable.create(function(observer)
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local completed = {}
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local subscriptions = {}
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local function onNext(...)
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return observer:onNext(...)
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end
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local function onError(message)
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return observer:onError(message)
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end
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local function onCompleted(i)
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return function()
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table.insert(completed, i)
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if #completed == #sources then
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observer:onCompleted()
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end
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end
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end
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for i = 1, #sources do
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subscriptions[i] = sources[i]:subscribe(onNext, onError, onCompleted(i))
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end
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return Subscription.create(function()
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for i = 1, #sources do
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if subscriptions[i] then
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subscriptions[i]:unsubscribe()
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end
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end
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end)
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end)
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end
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