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using System;
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using System.Diagnostics;
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namespace Implab {
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class PromiseFuncReaction<TRet> : PromiseReaction {
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readonly Action m_fulfilled;
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readonly Action<Exception> m_rejected;
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readonly Deferred<TRet> m_next;
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public PromiseFuncReaction(Func<TRet> fulfilled, Func<Exception, TRet> rejected, Deferred<TRet> next, IDispatcher dispatcher) : base(dispatcher) {
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if (fulfilled != null)
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m_fulfilled = () => { next.Resolve(fulfilled()); };
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if (rejected != null)
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m_rejected = (e) => { next.Resolve(rejected(e)); };
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m_next = next;
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}
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public PromiseFuncReaction(Func<IPromise<TRet>> fulfilled, Func<Exception, IPromise<TRet>> rejected, Deferred<TRet> next, IDispatcher dispatcher) : base(dispatcher) {
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if (fulfilled != null)
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m_fulfilled = () => { next.Resolve(fulfilled()); };
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if (rejected != null)
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m_rejected = (e) => { next.Resolve(rejected(e)); };
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m_next = next;
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}
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public PromiseFuncReaction(Func<TRet> fulfilled, Func<Exception, IPromise<TRet>> rejected, Deferred<TRet> next, IDispatcher dispatcher) : base(dispatcher) {
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if (fulfilled != null)
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m_fulfilled = () => { next.Resolve(fulfilled()); };
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if (rejected != null)
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m_rejected = (e) => { next.Resolve(rejected(e)); };
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m_next = next;
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}
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public PromiseFuncReaction(Func<IPromise<TRet>> fulfilled, Func<Exception, TRet> rejected, Deferred<TRet> next, IDispatcher dispatcher) : base(dispatcher) {
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if (fulfilled != null)
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m_fulfilled = () => { next.Resolve(fulfilled()); };
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if (rejected != null)
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m_rejected = (e) => { next.Resolve(rejected(e)); };
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m_next = next;
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}
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protected override bool HasFulfilHandler => m_fulfilled != null;
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protected override bool HasRejectHandler => m_rejected != null;
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protected override void DefaultReject(Exception reason) {
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m_next.Reject(reason);
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}
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protected override void DefaultResolve() {
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throw new NotImplementedException();
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}
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protected override void RejectImpl(Exception reason) {
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try {
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m_rejected(reason);
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} catch (Exception e){
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m_next.Reject(e);
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}
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}
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protected override void ResolveImpl() {
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try {
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m_fulfilled();
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} catch (Exception e){
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m_next.Reject(e);
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}
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}
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}
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}
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