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1 using System;
1 using System;
2 using System.Collections.Generic;
2 using System.Collections.Generic;
3 using System.Linq;
3 using System.Linq;
4 using System.Text;
4 using System.Text;
5
5
6 namespace Implab
6 namespace Implab
7 {
7 {
8 public interface IPromise<T>: IPromiseBase
8 public interface IPromise<T>: IPromiseBase
9 {
9 {
10
10
11 T Join();
11
12
13 T Join(int timeout);
14
15 IPromise<T> Then(ResultHandler<T> success, ErrorHandler error);
16 IPromise<T> Then(ResultHandler<T> success, ErrorHandler<T> error);
17 IPromise<T> Then(ResultHandler<T> success);
18 IPromise<T> Error(ErrorHandler error);
19 IPromise<T> Error(ErrorHandler<T> error);
12
20
21 IPromise<T2> Map<T2>(ResultMapper<T,T2> mapper, ErrorHandler error);
22 IPromise<T2> Map<T2>(ResultMapper<T, T2> mapper);
13
23
24 IPromise<T2> Chain<T2>(ChainedOperation<T, T2> chained, ErrorHandler error);
25 IPromise<T2> Chain<T2>(ChainedOperation<T, T2> chained);
26
27 IPromise<T> Cancelled(Action handler);
28 IPromise<T> Finally(Action handler);
29 IPromise<T> Anyway(Action handler);
14
30
15 }
31 }
16 }
32 }
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@@ -1,19 +1,23
1 using System;
1 using System;
2 using System.Collections.Generic;
2 using System.Collections.Generic;
3 using System.Linq;
3 using System.Linq;
4 using System.Text;
4 using System.Text;
5
5
6 namespace Implab {
6 namespace Implab {
7 public interface IPromiseBase: ICancellable {
7 public interface IPromiseBase: ICancellable {
8 /// <summary>
8 /// <summary>
9 /// Check whereather the promise has no more than one dependent promise.
9 /// Check whereather the promise has no more than one dependent promise.
10 /// </summary>
10 /// </summary>
11 bool IsExclusive {
11 bool IsExclusive {
12 get;
12 get;
13 }
13 }
14
14
15 bool IsResolved { get; }
15 bool IsResolved { get; }
16
16
17 bool IsCancelled { get; }
17 bool IsCancelled { get; }
18
19 IPromiseBase Then(Action success,ErrorHandler error);
20 IPromiseBase Then(Action success);
21
18 }
22 }
19 }
23 }
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@@ -1,172 +1,172
1 using System;
1 using System;
2 using System.Collections.Generic;
2 using System.Collections.Generic;
3 using System.Diagnostics;
3 using System.Diagnostics;
4 using System.Linq;
4 using System.Linq;
5 using System.Text;
5 using System.Text;
6 using System.Threading;
6 using System.Threading;
7
7
8 namespace Implab.Parallels {
8 namespace Implab.Parallels {
9 public static class ArrayTraits {
9 public static class ArrayTraits {
10 class ArrayIterator<TSrc> : DispatchPool<int> {
10 class ArrayIterator<TSrc> : DispatchPool<int> {
11 readonly Action<TSrc> m_action;
11 readonly Action<TSrc> m_action;
12 readonly TSrc[] m_source;
12 readonly TSrc[] m_source;
13 readonly Promise<int> m_promise = new Promise<int>();
13 readonly Promise<int> m_promise = new Promise<int>();
14
14
15 int m_pending;
15 int m_pending;
16 int m_next;
16 int m_next;
17
17
18 public ArrayIterator(TSrc[] source, Action<TSrc> action, int threads)
18 public ArrayIterator(TSrc[] source, Action<TSrc> action, int threads)
19 : base(threads) {
19 : base(threads) {
20
20
21 Debug.Assert(source != null);
21 Debug.Assert(source != null);
22 Debug.Assert(action != null);
22 Debug.Assert(action != null);
23
23
24 m_next = 0;
24 m_next = 0;
25 m_source = source;
25 m_source = source;
26 m_pending = source.Length;
26 m_pending = source.Length;
27 m_action = action;
27 m_action = action;
28
28
29 m_promise.Anyway(() => Dispose());
29 m_promise.Anyway(() => Dispose());
30 m_promise.Cancelled(() => Dispose());
30 m_promise.Cancelled(() => Dispose());
31
31
32 InitPool();
32 InitPool();
33 }
33 }
34
34
35 public Promise<int> Promise {
35 public Promise<int> Promise {
36 get {
36 get {
37 return m_promise;
37 return m_promise;
38 }
38 }
39 }
39 }
40
40
41 protected override bool TryDequeue(out int unit) {
41 protected override bool TryDequeue(out int unit) {
42 unit = Interlocked.Increment(ref m_next) - 1;
42 unit = Interlocked.Increment(ref m_next) - 1;
43 return unit >= m_source.Length ? false : true;
43 return unit >= m_source.Length ? false : true;
44 }
44 }
45
45
46 protected override void InvokeUnit(int unit) {
46 protected override void InvokeUnit(int unit) {
47 try {
47 try {
48 m_action(m_source[unit]);
48 m_action(m_source[unit]);
49 var pending = Interlocked.Decrement(ref m_pending);
49 var pending = Interlocked.Decrement(ref m_pending);
50 if (pending == 0)
50 if (pending == 0)
51 m_promise.Resolve(m_source.Length);
51 m_promise.Resolve(m_source.Length);
52 } catch (Exception e) {
52 } catch (Exception e) {
53 m_promise.Reject(e);
53 m_promise.Reject(e);
54 }
54 }
55 }
55 }
56 }
56 }
57
57
58 class ArrayMapper<TSrc, TDst>: DispatchPool<int> {
58 class ArrayMapper<TSrc, TDst>: DispatchPool<int> {
59 readonly Func<TSrc, TDst> m_transform;
59 readonly Func<TSrc, TDst> m_transform;
60 readonly TSrc[] m_source;
60 readonly TSrc[] m_source;
61 readonly TDst[] m_dest;
61 readonly TDst[] m_dest;
62 readonly Promise<TDst[]> m_promise = new Promise<TDst[]>();
62 readonly Promise<TDst[]> m_promise = new Promise<TDst[]>();
63
63
64 int m_pending;
64 int m_pending;
65 int m_next;
65 int m_next;
66
66
67 public ArrayMapper(TSrc[] source, Func<TSrc, TDst> transform, int threads)
67 public ArrayMapper(TSrc[] source, Func<TSrc, TDst> transform, int threads)
68 : base(threads) {
68 : base(threads) {
69
69
70 Debug.Assert (source != null);
70 Debug.Assert (source != null);
71 Debug.Assert( transform != null);
71 Debug.Assert( transform != null);
72
72
73 m_next = 0;
73 m_next = 0;
74 m_source = source;
74 m_source = source;
75 m_dest = new TDst[source.Length];
75 m_dest = new TDst[source.Length];
76 m_pending = source.Length;
76 m_pending = source.Length;
77 m_transform = transform;
77 m_transform = transform;
78
78
79 m_promise.Anyway(() => Dispose());
79 m_promise.Anyway(() => Dispose());
80 m_promise.Cancelled(() => Dispose());
80 m_promise.Cancelled(() => Dispose());
81
81
82 InitPool();
82 InitPool();
83 }
83 }
84
84
85 public Promise<TDst[]> Promise {
85 public Promise<TDst[]> Promise {
86 get {
86 get {
87 return m_promise;
87 return m_promise;
88 }
88 }
89 }
89 }
90
90
91 protected override bool TryDequeue(out int unit) {
91 protected override bool TryDequeue(out int unit) {
92 unit = Interlocked.Increment(ref m_next) - 1;
92 unit = Interlocked.Increment(ref m_next) - 1;
93 return unit >= m_source.Length ? false : true;
93 return unit >= m_source.Length ? false : true;
94 }
94 }
95
95
96 protected override void InvokeUnit(int unit) {
96 protected override void InvokeUnit(int unit) {
97 try {
97 try {
98 m_dest[unit] = m_transform(m_source[unit]);
98 m_dest[unit] = m_transform(m_source[unit]);
99 var pending = Interlocked.Decrement(ref m_pending);
99 var pending = Interlocked.Decrement(ref m_pending);
100 if (pending == 0)
100 if (pending == 0)
101 m_promise.Resolve(m_dest);
101 m_promise.Resolve(m_dest);
102 } catch (Exception e) {
102 } catch (Exception e) {
103 m_promise.Reject(e);
103 m_promise.Reject(e);
104 }
104 }
105 }
105 }
106 }
106 }
107
107
108 public static Promise<TDst[]> ParallelMap<TSrc, TDst> (this TSrc[] source, Func<TSrc,TDst> transform, int threads) {
108 public static Promise<TDst[]> ParallelMap<TSrc, TDst> (this TSrc[] source, Func<TSrc,TDst> transform, int threads) {
109 if (source == null)
109 if (source == null)
110 throw new ArgumentNullException("source");
110 throw new ArgumentNullException("source");
111 if (transform == null)
111 if (transform == null)
112 throw new ArgumentNullException("transform");
112 throw new ArgumentNullException("transform");
113
113
114 var mapper = new ArrayMapper<TSrc, TDst>(source, transform, threads);
114 var mapper = new ArrayMapper<TSrc, TDst>(source, transform, threads);
115 return mapper.Promise;
115 return mapper.Promise;
116 }
116 }
117
117
118 public static Promise<int> ParallelForEach<TSrc>(this TSrc[] source, Action<TSrc> action, int threads) {
118 public static Promise<int> ParallelForEach<TSrc>(this TSrc[] source, Action<TSrc> action, int threads) {
119 if (source == null)
119 if (source == null)
120 throw new ArgumentNullException("source");
120 throw new ArgumentNullException("source");
121 if (action == null)
121 if (action == null)
122 throw new ArgumentNullException("action");
122 throw new ArgumentNullException("action");
123
123
124 var iter = new ArrayIterator<TSrc>(source, action, threads);
124 var iter = new ArrayIterator<TSrc>(source, action, threads);
125 return iter.Promise;
125 return iter.Promise;
126 }
126 }
127
127
128 public static Promise<TDst[]> ChainedMap<TSrc, TDst>(this TSrc[] source, ChainedOperation<TSrc, TDst> transform, int threads) {
128 public static IPromise<TDst[]> ChainedMap<TSrc, TDst>(this TSrc[] source, ChainedOperation<TSrc, TDst> transform, int threads) {
129 if (source == null)
129 if (source == null)
130 throw new ArgumentNullException("source");
130 throw new ArgumentNullException("source");
131 if (transform == null)
131 if (transform == null)
132 throw new ArgumentNullException("transform");
132 throw new ArgumentNullException("transform");
133 if (threads <= 0)
133 if (threads <= 0)
134 throw new ArgumentOutOfRangeException("Threads number must be greater then zero");
134 throw new ArgumentOutOfRangeException("Threads number must be greater then zero");
135
135
136 var promise = new Promise<TDst[]>();
136 var promise = new Promise<TDst[]>();
137 var res = new TDst[source.Length];
137 var res = new TDst[source.Length];
138 var pending = source.Length;
138 var pending = source.Length;
139 var semaphore = new Semaphore(threads, threads);
139 var semaphore = new Semaphore(threads, threads);
140
140
141 AsyncPool.InvokeNewThread(() => {
141 AsyncPool.InvokeNewThread(() => {
142 for (int i = 0; i < source.Length; i++) {
142 for (int i = 0; i < source.Length; i++) {
143 if(promise.IsResolved)
143 if(promise.IsResolved)
144 break; // stop processing in case of error or cancellation
144 break; // stop processing in case of error or cancellation
145 var idx = i;
145 var idx = i;
146 semaphore.WaitOne();
146 semaphore.WaitOne();
147 try {
147 try {
148 var p1 = transform(source[i]);
148 var p1 = transform(source[i]);
149 p1.Anyway(() => semaphore.Release());
149 p1.Anyway(() => semaphore.Release());
150 p1.Cancelled(() => semaphore.Release());
150 p1.Cancelled(() => semaphore.Release());
151 p1.Then(
151 p1.Then(
152 x => {
152 x => {
153 res[idx] = x;
153 res[idx] = x;
154 var left = Interlocked.Decrement(ref pending);
154 var left = Interlocked.Decrement(ref pending);
155 if (left == 0)
155 if (left == 0)
156 promise.Resolve(res);
156 promise.Resolve(res);
157 },
157 },
158 e => promise.Reject(e)
158 e => promise.Reject(e)
159 );
159 );
160
160
161 } catch (Exception e) {
161 } catch (Exception e) {
162 promise.Reject(e);
162 promise.Reject(e);
163 }
163 }
164 }
164 }
165 return 0;
165 return 0;
166 });
166 });
167
167
168 return promise.Anyway(() => semaphore.Dispose());
168 return promise.Anyway(() => semaphore.Dispose());
169 }
169 }
170
170
171 }
171 }
172 }
172 }
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@@ -1,646 +1,656
1 using System;
1 using System;
2 using System.Collections.Generic;
2 using System.Collections.Generic;
3 using System.Reflection;
3 using System.Reflection;
4 using System.Diagnostics;
4 using System.Diagnostics;
5 using System.Threading;
5 using System.Threading;
6 using Implab.Parallels;
6 using Implab.Parallels;
7
7
8 namespace Implab {
8 namespace Implab {
9
9
10 public delegate void ErrorHandler(Exception e);
10 public delegate void ErrorHandler(Exception e);
11 public delegate T ErrorHandler<out T>(Exception e);
11 public delegate T ErrorHandler<out T>(Exception e);
12 public delegate void ResultHandler<in T>(T result);
12 public delegate void ResultHandler<in T>(T result);
13 public delegate TNew ResultMapper<in TSrc, out TNew>(TSrc result);
13 public delegate TNew ResultMapper<in TSrc, out TNew>(TSrc result);
14 public delegate Promise<TNew> ChainedOperation<in TSrc, TNew>(TSrc result);
14 public delegate Promise<TNew> ChainedOperation<in TSrc, TNew>(TSrc result);
15
15
16 /// <summary>
16 /// <summary>
17 /// Класс для асинхронного получСния Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠ². Π’Π°ΠΊ Π½Π°Π·Ρ‹Π²Π°Π΅ΠΌΠΎΠ΅ "ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅".
17 /// Класс для асинхронного получСния Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠ². Π’Π°ΠΊ Π½Π°Π·Ρ‹Π²Π°Π΅ΠΌΠΎΠ΅ "ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅".
18 /// </summary>
18 /// </summary>
19 /// <typeparam name="T">Π’ΠΈΠΏ ΠΏΠΎΠ»ΡƒΡ‡Π°Π΅ΠΌΠΎΠ³ΠΎ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π°</typeparam>
19 /// <typeparam name="T">Π’ΠΈΠΏ ΠΏΠΎΠ»ΡƒΡ‡Π°Π΅ΠΌΠΎΠ³ΠΎ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π°</typeparam>
20 /// <remarks>
20 /// <remarks>
21 /// <para>БСрвис ΠΏΡ€ΠΈ ΠΎΠ±Ρ€Π°Ρ‰Π΅Π½ΠΈΠΈ ΠΊ Π΅Π³ΠΎ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρƒ Π΄Π°Π΅Ρ‚ ΠΎΠ±Π΅Ρ‰Π°ΠΈΠ½ΠΈΠ΅ ΠΎ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ,
21 /// <para>БСрвис ΠΏΡ€ΠΈ ΠΎΠ±Ρ€Π°Ρ‰Π΅Π½ΠΈΠΈ ΠΊ Π΅Π³ΠΎ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρƒ Π΄Π°Π΅Ρ‚ ΠΎΠ±Π΅Ρ‰Π°ΠΈΠ½ΠΈΠ΅ ΠΎ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ,
22 /// ΠΊΠ»ΠΈΠ΅Π½Ρ‚ ΠΏΠΎΠ»ΡƒΡ‡ΠΈΠ² Ρ‚Π°ΠΊΠΎΠ΅ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ ΠΌΠΎΠΆΠ΅Ρ‚ ΡƒΡΡ‚Π°Π½ΠΎΠ²ΠΈΡ‚ΡŒ ряд ΠΎΠ±Ρ€Π°Ρ‚Π½Ρ‹Ρ… Π²Ρ‹Π·ΠΎΠ²ΠΎ для получСния
22 /// ΠΊΠ»ΠΈΠ΅Π½Ρ‚ ΠΏΠΎΠ»ΡƒΡ‡ΠΈΠ² Ρ‚Π°ΠΊΠΎΠ΅ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ ΠΌΠΎΠΆΠ΅Ρ‚ ΡƒΡΡ‚Π°Π½ΠΎΠ²ΠΈΡ‚ΡŒ ряд ΠΎΠ±Ρ€Π°Ρ‚Π½Ρ‹Ρ… Π²Ρ‹Π·ΠΎΠ²ΠΎ для получСния
23 /// событий выполнСния обСщания, Ρ‚ΠΎΠ΅ΡΡ‚ΡŒ Π·Π°Π²Π΅Ρ€ΡˆΠ΅Π½ΠΈΡ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ ΠΈ прСдоставлСнии Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠ².</para>
23 /// событий выполнСния обСщания, Ρ‚ΠΎΠ΅ΡΡ‚ΡŒ Π·Π°Π²Π΅Ρ€ΡˆΠ΅Π½ΠΈΡ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ ΠΈ прСдоставлСнии Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠ².</para>
24 /// <para>
24 /// <para>
25 /// ΠžΠ±Π΅Ρ‰Π΅Π½ΠΈΠ΅ ΠΌΠΎΠΆΠ΅Ρ‚ Π±Ρ‹Ρ‚ΡŒ ΠΊΠ°ΠΊ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ, Ρ‚Π°ΠΊ ΠΈ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ с ошибкой. Для подписки Π½Π°
25 /// ΠžΠ±Π΅Ρ‰Π΅Π½ΠΈΠ΅ ΠΌΠΎΠΆΠ΅Ρ‚ Π±Ρ‹Ρ‚ΡŒ ΠΊΠ°ΠΊ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ, Ρ‚Π°ΠΊ ΠΈ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ с ошибкой. Для подписки Π½Π°
26 /// Π΄Π°Π½Π½Ρ‹Π΅ события ΠΊΠ»ΠΈΠ΅Π½Ρ‚ Π΄ΠΎΠ»ΠΆΠ΅Π½ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹ <c>Then</c>.
26 /// Π΄Π°Π½Π½Ρ‹Π΅ события ΠΊΠ»ΠΈΠ΅Π½Ρ‚ Π΄ΠΎΠ»ΠΆΠ΅Π½ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹ <c>Then</c>.
27 /// </para>
27 /// </para>
28 /// <para>
28 /// <para>
29 /// БСрвис, Π² свою ΠΎΡ‡Π΅Ρ€Π΅Π΄ΡŒ, ΠΏΠΎ ΠΎΠΊΠΎΠ½Ρ‡Π°Π½ΠΈΡŽ выполнСния ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ (Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎ с ошибкой),
29 /// БСрвис, Π² свою ΠΎΡ‡Π΅Ρ€Π΅Π΄ΡŒ, ΠΏΠΎ ΠΎΠΊΠΎΠ½Ρ‡Π°Π½ΠΈΡŽ выполнСния ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ (Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎ с ошибкой),
30 /// ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅Ρ‚ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹ <c>Resolve</c> Π»ΠΈΠ±ΠΎ <c>Reject</c> для оповСщСния ΠΊΠ»ΠΈΠ΅Ρ‚Π½Π° ΠΎ
30 /// ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅Ρ‚ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹ <c>Resolve</c> Π»ΠΈΠ±ΠΎ <c>Reject</c> для оповСщСния ΠΊΠ»ΠΈΠ΅Ρ‚Π½Π° ΠΎ
31 /// Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ обСщания.
31 /// Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ обСщания.
32 /// </para>
32 /// </para>
33 /// <para>
33 /// <para>
34 /// Если сСрвСр успСл Π²Ρ‹ΠΏΠΎΠ»Π½ΠΈΡ‚ΡŒ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ Π΅Ρ‰Π΅ Π΄ΠΎ Ρ‚ΠΎΠ³ΠΎ, ΠΊΠ°ΠΊ ΠΊΠ»ΠΈΠ΅Π½Ρ‚ Π½Π° Π½Π΅Π³ΠΎ подписался,
34 /// Если сСрвСр успСл Π²Ρ‹ΠΏΠΎΠ»Π½ΠΈΡ‚ΡŒ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ Π΅Ρ‰Π΅ Π΄ΠΎ Ρ‚ΠΎΠ³ΠΎ, ΠΊΠ°ΠΊ ΠΊΠ»ΠΈΠ΅Π½Ρ‚ Π½Π° Π½Π΅Π³ΠΎ подписался,
35 /// Ρ‚ΠΎ Π² ΠΌΠΎΠΌΠ΅Π½Ρ‚ подписки ΠΊΠ»ΠΈΠ΅Π½Ρ‚Π° Π±ΡƒΠ΄ΡƒΡ‚ Π²Ρ‹Π·Π²Π°Π½Ρ‹ ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΠ²ΡƒΡŽΡ‰ΠΈΠ΅ события Π² синхронном
35 /// Ρ‚ΠΎ Π² ΠΌΠΎΠΌΠ΅Π½Ρ‚ подписки ΠΊΠ»ΠΈΠ΅Π½Ρ‚Π° Π±ΡƒΠ΄ΡƒΡ‚ Π²Ρ‹Π·Π²Π°Π½Ρ‹ ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΠ²ΡƒΡŽΡ‰ΠΈΠ΅ события Π² синхронном
36 /// Ρ€Π΅ΠΆΠΈΠΌΠ΅ ΠΈ ΠΊΠ»ΠΈΠ΅Π½Ρ‚ Π±ΡƒΠ΄Π΅Ρ‚ ΠΎΠΏΠΎΠ²Π΅Ρ‰Π΅Π½ Π² любом случаС. Π˜Π½Π°Ρ‡Π΅, ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊΠΈ Π΄ΠΎΠ±Π°Π²Π»ΡΡŽΡ‚ΡΡ Π²
36 /// Ρ€Π΅ΠΆΠΈΠΌΠ΅ ΠΈ ΠΊΠ»ΠΈΠ΅Π½Ρ‚ Π±ΡƒΠ΄Π΅Ρ‚ ΠΎΠΏΠΎΠ²Π΅Ρ‰Π΅Π½ Π² любом случаС. Π˜Π½Π°Ρ‡Π΅, ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊΠΈ Π΄ΠΎΠ±Π°Π²Π»ΡΡŽΡ‚ΡΡ Π²
37 /// список Π² порядкС подписания ΠΈ Π² этом ΠΆΠ΅ порядкС ΠΎΠ½ΠΈ Π±ΡƒΠ΄ΡƒΡ‚ Π²Ρ‹Π·Π²Π°Π½Ρ‹ ΠΏΡ€ΠΈ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ
37 /// список Π² порядкС подписания ΠΈ Π² этом ΠΆΠ΅ порядкС ΠΎΠ½ΠΈ Π±ΡƒΠ΄ΡƒΡ‚ Π²Ρ‹Π·Π²Π°Π½Ρ‹ ΠΏΡ€ΠΈ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ
38 /// обСщания.
38 /// обСщания.
39 /// </para>
39 /// </para>
40 /// <para>
40 /// <para>
41 /// ΠžΠ±Ρ€Π°Π±Π°Ρ‚Ρ‹Π²Π°Ρ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ обСщания ΠΌΠΎΠΆΠ½ΠΎ ΠΏΡ€Π΅ΠΎΠ±Ρ€Π°Π·ΠΎΠ²Ρ‹Π²Π°Ρ‚ΡŒ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ Π»ΠΈΠ±ΠΎ ΠΈΠ½ΠΈΡ†ΠΈΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ
41 /// ΠžΠ±Ρ€Π°Π±Π°Ρ‚Ρ‹Π²Π°Ρ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ обСщания ΠΌΠΎΠΆΠ½ΠΎ ΠΏΡ€Π΅ΠΎΠ±Ρ€Π°Π·ΠΎΠ²Ρ‹Π²Π°Ρ‚ΡŒ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ Π»ΠΈΠ±ΠΎ ΠΈΠ½ΠΈΡ†ΠΈΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ
42 /// связанныС асинхронныС ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ Ρ‚Π°ΠΊΠΆΠ΅ Π²ΠΎΠ·Π²Ρ€Π°Ρ‰Π°ΡŽΡ‚ обСщания. Для этого слСдуСт
42 /// связанныС асинхронныС ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ Ρ‚Π°ΠΊΠΆΠ΅ Π²ΠΎΠ·Π²Ρ€Π°Ρ‰Π°ΡŽΡ‚ обСщания. Для этого слСдуСт
43 /// ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‰ΡƒΡŽ Ρ„ΠΎΡ€ΠΌΡƒ ΠΌΠ΅Ρ‚ΠΎΠ΄Π΅ <c>Then</c>.
43 /// ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‰ΡƒΡŽ Ρ„ΠΎΡ€ΠΌΡƒ ΠΌΠ΅Ρ‚ΠΎΠ΄Π΅ <c>Then</c>.
44 /// </para>
44 /// </para>
45 /// <para>
45 /// <para>
46 /// Π’Π°ΠΊΠΆΠ΅ Ρ…ΠΎΡ€ΠΎΡˆΠΈΠΌ ΠΏΡ€Π°Π²ΠΈΠ»ΠΎΠΌ являСтся Ρ‚ΠΎ, Ρ‡Ρ‚ΠΎ <c>Resolve</c> ΠΈ <c>Reject</c> Π΄ΠΎΠ»ΠΆΠ΅Π½ Π²Ρ‹Π·Ρ‹Π²Π°Ρ‚ΡŒ
46 /// Π’Π°ΠΊΠΆΠ΅ Ρ…ΠΎΡ€ΠΎΡˆΠΈΠΌ ΠΏΡ€Π°Π²ΠΈΠ»ΠΎΠΌ являСтся Ρ‚ΠΎ, Ρ‡Ρ‚ΠΎ <c>Resolve</c> ΠΈ <c>Reject</c> Π΄ΠΎΠ»ΠΆΠ΅Π½ Π²Ρ‹Π·Ρ‹Π²Π°Ρ‚ΡŒ
47 /// Ρ‚ΠΎΠ»ΡŒΠΊΠΎ ΠΈΠ½ΠΈΡ†ΠΈΠ°Ρ‚ΠΎΡ€ обСщания ΠΈΠ½Π°Ρ‡Π΅ ΠΌΠΎΠ³ΡƒΡ‚ Π²ΠΎΠ·Π½ΠΈΠΊΠ½ΡƒΡ‚ΡŒ противорСчия.
47 /// Ρ‚ΠΎΠ»ΡŒΠΊΠΎ ΠΈΠ½ΠΈΡ†ΠΈΠ°Ρ‚ΠΎΡ€ обСщания ΠΈΠ½Π°Ρ‡Π΅ ΠΌΠΎΠ³ΡƒΡ‚ Π²ΠΎΠ·Π½ΠΈΠΊΠ½ΡƒΡ‚ΡŒ противорСчия.
48 /// </para>
48 /// </para>
49 /// </remarks>
49 /// </remarks>
50 public class Promise<T> : IPromise<T> {
50 public class Promise<T> : IPromise<T> {
51
51
52 struct HandlerDescriptor {
52 struct HandlerDescriptor {
53 public ResultHandler<T> resultHandler;
53 public ResultHandler<T> resultHandler;
54 public ErrorHandler errorHandler;
54 public ErrorHandler errorHandler;
55 public Action cancellHandler;
55 public Action cancellHandler;
56
56
57 public void Resolve(T result) {
57 public void Resolve(T result) {
58 if (resultHandler != null)
58 if (resultHandler != null)
59 try {
59 try {
60 resultHandler(result);
60 resultHandler(result);
61 } catch (Exception e) {
61 } catch (Exception e) {
62 Reject(e);
62 Reject(e);
63 }
63 }
64 }
64 }
65
65
66 public void Reject(Exception err) {
66 public void Reject(Exception err) {
67 if (errorHandler != null)
67 if (errorHandler != null)
68 try {
68 try {
69 errorHandler(err);
69 errorHandler(err);
70 } catch {
70 } catch {
71 }
71 }
72 }
72 }
73
73
74 public void Cancel() {
74 public void Cancel() {
75 if (cancellHandler != null)
75 if (cancellHandler != null)
76 try {
76 try {
77 cancellHandler();
77 cancellHandler();
78 } catch {
78 } catch {
79 }
79 }
80 }
80 }
81 }
81 }
82
82
83 const int UnresolvedSate = 0;
83 const int UnresolvedSate = 0;
84 const int TransitionalState = 1;
84 const int TransitionalState = 1;
85 const int SucceededState = 2;
85 const int SucceededState = 2;
86 const int RejectedState = 3;
86 const int RejectedState = 3;
87 const int CancelledState = 4;
87 const int CancelledState = 4;
88
88
89 readonly IPromiseBase m_parent;
89 readonly IPromiseBase m_parent;
90 readonly bool m_cancellable;
90 readonly bool m_cancellable;
91
91
92 int m_childrenCount = 0;
92 int m_childrenCount = 0;
93 int m_state;
93 int m_state;
94 T m_result;
94 T m_result;
95 Exception m_error;
95 Exception m_error;
96
96
97 readonly MTQueue<HandlerDescriptor> m_handlers = new MTQueue<HandlerDescriptor>();
97 readonly MTQueue<HandlerDescriptor> m_handlers = new MTQueue<HandlerDescriptor>();
98
98
99 public Promise() {
99 public Promise() {
100 m_cancellable = true;
100 m_cancellable = true;
101 }
101 }
102
102
103 public Promise(IPromiseBase parent, bool cancellable) {
103 public Promise(IPromiseBase parent, bool cancellable) {
104 m_cancellable = cancellable;
104 m_cancellable = cancellable;
105 m_parent = parent;
105 m_parent = parent;
106 }
106 }
107
107
108 void InternalCancel() {
108 void InternalCancel() {
109 // don't try to cancel parent :)
109 // don't try to cancel parent :)
110 Cancel(false);
110 Cancel(false);
111 }
111 }
112
112
113 bool BeginTransit() {
113 bool BeginTransit() {
114 return UnresolvedSate == Interlocked.CompareExchange(ref m_state, TransitionalState, UnresolvedSate);
114 return UnresolvedSate == Interlocked.CompareExchange(ref m_state, TransitionalState, UnresolvedSate);
115 }
115 }
116
116
117 void CompleteTransit(int state) {
117 void CompleteTransit(int state) {
118 if (TransitionalState != Interlocked.CompareExchange(ref m_state, state, TransitionalState))
118 if (TransitionalState != Interlocked.CompareExchange(ref m_state, state, TransitionalState))
119 throw new InvalidOperationException("Can't complete transition when the object isn't in the transitional state");
119 throw new InvalidOperationException("Can't complete transition when the object isn't in the transitional state");
120 }
120 }
121
121
122 void WaitTransition() {
122 void WaitTransition() {
123 while (m_state == TransitionalState) {
123 while (m_state == TransitionalState) {
124 /* noop */
124 /* noop */
125 }
125 }
126 }
126 }
127
127
128 public bool IsResolved {
128 public bool IsResolved {
129 get {
129 get {
130 return m_state > 1;
130 return m_state > 1;
131 }
131 }
132 }
132 }
133
133
134 public bool IsCancelled {
134 public bool IsCancelled {
135 get {
135 get {
136 return m_state == CancelledState;
136 return m_state == CancelledState;
137 }
137 }
138 }
138 }
139
139
140 /// <summary>
140 /// <summary>
141 /// ВыполняСт ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅, сообщая ΠΎΠ± ΡƒΡΠΏΠ΅ΡˆΠ½ΠΎΠΌ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ.
141 /// ВыполняСт ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅, сообщая ΠΎΠ± ΡƒΡΠΏΠ΅ΡˆΠ½ΠΎΠΌ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ.
142 /// </summary>
142 /// </summary>
143 /// <param name="result">Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ выполнСния.</param>
143 /// <param name="result">Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ выполнСния.</param>
144 /// <exception cref="InvalidOperationException">Π”Π°Π½Π½ΠΎΠ΅ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ ΡƒΠΆΠ΅ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ</exception>
144 /// <exception cref="InvalidOperationException">Π”Π°Π½Π½ΠΎΠ΅ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ ΡƒΠΆΠ΅ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ</exception>
145 public void Resolve(T result) {
145 public void Resolve(T result) {
146 if (BeginTransit()) {
146 if (BeginTransit()) {
147 m_result = result;
147 m_result = result;
148 CompleteTransit(SucceededState);
148 CompleteTransit(SucceededState);
149 OnStateChanged();
149 OnStateChanged();
150 } else {
150 } else {
151 WaitTransition();
151 WaitTransition();
152 if (m_state != CancelledState)
152 if (m_state != CancelledState)
153 throw new InvalidOperationException("The promise is already resolved");
153 throw new InvalidOperationException("The promise is already resolved");
154 }
154 }
155 }
155 }
156
156
157 /// <summary>
157 /// <summary>
158 /// ВыполняСт ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅, сообщая ΠΎΠ± ошибкС
158 /// ВыполняСт ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅, сообщая ΠΎΠ± ошибкС
159 /// </summary>
159 /// </summary>
160 /// <remarks>
160 /// <remarks>
161 /// ΠŸΠΎΡΠΊΠΎΠ»ΡŒΠΊΡƒ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ Π΄ΠΎΠ»ΠΆΠ½ΠΎ Ρ€Π°Π±ΠΎΡ‚Π°Ρ‚ΡŒ Π² ΠΌΠ½ΠΎΠ³ΠΎΠΏΡ‚ΠΎΡ‡Π½ΠΎΠΉ срСдС, ΠΏΡ€ΠΈ Π΅Π³ΠΎ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ сразу нСсколько ΠΏΠΎΡ‚ΠΎΠΊΠΎΠ²
161 /// ΠŸΠΎΡΠΊΠΎΠ»ΡŒΠΊΡƒ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ Π΄ΠΎΠ»ΠΆΠ½ΠΎ Ρ€Π°Π±ΠΎΡ‚Π°Ρ‚ΡŒ Π² ΠΌΠ½ΠΎΠ³ΠΎΠΏΡ‚ΠΎΡ‡Π½ΠΎΠΉ срСдС, ΠΏΡ€ΠΈ Π΅Π³ΠΎ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ сразу нСсколько ΠΏΠΎΡ‚ΠΎΠΊΠΎΠ²
162 /// ΠΌΠΎΠ³Ρƒ Π²Π΅Ρ€Π½ΡƒΡ‚ΡŒ ΠΎΡˆΠΈΠ±ΠΊΡƒ, ΠΏΡ€ΠΈ этом Ρ‚ΠΎΠ»ΡŒΠΊΠΎ пСрвая Π±ΡƒΠ΄Π΅Ρ‚ использована Π² качСствС Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π°, ΠΎΡΡ‚Π°Π»ΡŒΠ½Ρ‹Π΅
162 /// ΠΌΠΎΠ³Ρƒ Π²Π΅Ρ€Π½ΡƒΡ‚ΡŒ ΠΎΡˆΠΈΠ±ΠΊΡƒ, ΠΏΡ€ΠΈ этом Ρ‚ΠΎΠ»ΡŒΠΊΠΎ пСрвая Π±ΡƒΠ΄Π΅Ρ‚ использована Π² качСствС Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π°, ΠΎΡΡ‚Π°Π»ΡŒΠ½Ρ‹Π΅
163 /// Π±ΡƒΠ΄ΡƒΡ‚ ΠΏΡ€ΠΎΠΈΠ³Π½ΠΎΡ€ΠΈΡ€ΠΎΠ²Π°Π½Ρ‹.
163 /// Π±ΡƒΠ΄ΡƒΡ‚ ΠΏΡ€ΠΎΠΈΠ³Π½ΠΎΡ€ΠΈΡ€ΠΎΠ²Π°Π½Ρ‹.
164 /// </remarks>
164 /// </remarks>
165 /// <param name="error">Π˜ΡΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅ возникшСС ΠΏΡ€ΠΈ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ</param>
165 /// <param name="error">Π˜ΡΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅ возникшСС ΠΏΡ€ΠΈ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ</param>
166 /// <exception cref="InvalidOperationException">Π”Π°Π½Π½ΠΎΠ΅ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ ΡƒΠΆΠ΅ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ</exception>
166 /// <exception cref="InvalidOperationException">Π”Π°Π½Π½ΠΎΠ΅ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ ΡƒΠΆΠ΅ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ</exception>
167 public void Reject(Exception error) {
167 public void Reject(Exception error) {
168 if (BeginTransit()) {
168 if (BeginTransit()) {
169 m_error = error;
169 m_error = error;
170 CompleteTransit(RejectedState);
170 CompleteTransit(RejectedState);
171 OnStateChanged();
171 OnStateChanged();
172 } else {
172 } else {
173 WaitTransition();
173 WaitTransition();
174 if (m_state == SucceededState)
174 if (m_state == SucceededState)
175 throw new InvalidOperationException("The promise is already resolved");
175 throw new InvalidOperationException("The promise is already resolved");
176 }
176 }
177 }
177 }
178
178
179 /// <summary>
179 /// <summary>
180 /// ΠžΡ‚ΠΌΠ΅Π½ΡΠ΅Ρ‚ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΡŽ, Ссли это Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎ.
180 /// ΠžΡ‚ΠΌΠ΅Π½ΡΠ΅Ρ‚ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΡŽ, Ссли это Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎ.
181 /// </summary>
181 /// </summary>
182 /// <returns><c>true</c> ΠžΠΏΠ΅Ρ€Π°Ρ†ΠΈΡ Π±Ρ‹Π»Π° ΠΎΡ‚ΠΌΠ΅Π½Π΅Π½Π°, ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊΠΈ Π½Π΅ Π±ΡƒΠ΄ΡƒΡ‚ Π²Ρ‹Π·Π²Π°Π½Ρ‹.<c>false</c> ΠΎΡ‚ΠΌΠ΅Π½Π° Π½Π΅ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½Π°, ΠΏΠΎΡΠΊΠΎΠ»ΡŒΠΊΡƒ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ ΡƒΠΆΠ΅ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ ΠΈ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊΠΈ ΠΎΡ‚Ρ€Π°Π±ΠΎΡ‚Π°Π»ΠΈ.</returns>
182 /// <returns><c>true</c> ΠžΠΏΠ΅Ρ€Π°Ρ†ΠΈΡ Π±Ρ‹Π»Π° ΠΎΡ‚ΠΌΠ΅Π½Π΅Π½Π°, ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊΠΈ Π½Π΅ Π±ΡƒΠ΄ΡƒΡ‚ Π²Ρ‹Π·Π²Π°Π½Ρ‹.<c>false</c> ΠΎΡ‚ΠΌΠ΅Π½Π° Π½Π΅ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½Π°, ΠΏΠΎΡΠΊΠΎΠ»ΡŒΠΊΡƒ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ ΡƒΠΆΠ΅ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ ΠΈ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊΠΈ ΠΎΡ‚Ρ€Π°Π±ΠΎΡ‚Π°Π»ΠΈ.</returns>
183 public bool Cancel() {
183 public bool Cancel() {
184 return Cancel(true);
184 return Cancel(true);
185 }
185 }
186
186
187 /// <summary>
187 /// <summary>
188 /// Adds new handlers to this promise.
188 /// Adds new handlers to this promise.
189 /// </summary>
189 /// </summary>
190 /// <param name="success">The handler of the successfully completed operation.
190 /// <param name="success">The handler of the successfully completed operation.
191 /// This handler will recieve an operation result as a parameter.</param>
191 /// This handler will recieve an operation result as a parameter.</param>
192 /// <param name="error">Handles an exception that may occur during the operation.</param>
192 /// <param name="error">Handles an exception that may occur during the operation.</param>
193 /// <returns>The new promise chained to this one.</returns>
193 /// <returns>The new promise chained to this one.</returns>
194 public Promise<T> Then(ResultHandler<T> success, ErrorHandler error) {
194 public IPromise<T> Then(ResultHandler<T> success, ErrorHandler error) {
195 if (success == null && error == null)
195 if (success == null && error == null)
196 return this;
196 return this;
197
197
198 var medium = new Promise<T>(this, true);
198 var medium = new Promise<T>(this, true);
199
199
200 ResultHandler<T> resultHandler;
200 ResultHandler<T> resultHandler;
201 if (success != null)
201 if (success != null)
202 resultHandler = x => {
202 resultHandler = x => {
203 success(x);
203 success(x);
204 medium.Resolve(x);
204 medium.Resolve(x);
205 };
205 };
206 else
206 else
207 resultHandler = medium.Resolve;
207 resultHandler = medium.Resolve;
208
208
209 ErrorHandler errorHandler;
209 ErrorHandler errorHandler;
210 if (error != null)
210 if (error != null)
211 errorHandler = x => {
211 errorHandler = x => {
212 // нСсмотря Π½Π° Ρ‚ΠΎ, Ρ‡Ρ‚ΠΎ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊ ошибки вызываСтся бСзопасно,
212 // нСсмотря Π½Π° Ρ‚ΠΎ, Ρ‡Ρ‚ΠΎ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊ ошибки вызываСтся бСзопасно,
213 // Ρ‚.Π΅. возникшиС Π² Π½Π΅ΠΌ ошибки Π±ΡƒΠ΄ΡƒΡ‚ ΠΏΠΎΠ΄Π°Π²Π»Π΅Π½Ρ‹, Π½Π°ΠΌ Π½ΡƒΠΆΠ½ΠΎ
213 // Ρ‚.Π΅. возникшиС Π² Π½Π΅ΠΌ ошибки Π±ΡƒΠ΄ΡƒΡ‚ ΠΏΠΎΠ΄Π°Π²Π»Π΅Π½Ρ‹, Π½Π°ΠΌ Π½ΡƒΠΆΠ½ΠΎ
214 // Π³Π°Ρ€Π°Π½Ρ‚ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ, Ρ‡Ρ‚ΠΎ ошибка Π±ΡƒΠ΄Π΅Ρ‚ ΠΏΠ΅Ρ€Π΅Π΄Π°Π½Π° дальшС ΠΏΠΎ Ρ†Π΅ΠΏΠΎΡ‡ΠΊΠ΅ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠΉ
214 // Π³Π°Ρ€Π°Π½Ρ‚ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ, Ρ‡Ρ‚ΠΎ ошибка Π±ΡƒΠ΄Π΅Ρ‚ ΠΏΠ΅Ρ€Π΅Π΄Π°Π½Π° дальшС ΠΏΠΎ Ρ†Π΅ΠΏΠΎΡ‡ΠΊΠ΅ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠΉ
215 try {
215 try {
216 error(x);
216 error(x);
217 } catch { }
217 } catch { }
218 medium.Reject(x);
218 medium.Reject(x);
219 };
219 };
220 else
220 else
221 errorHandler = medium.Reject;
221 errorHandler = medium.Reject;
222
222
223 AddHandler(resultHandler, errorHandler, medium.InternalCancel);
223 AddHandler(resultHandler, errorHandler, medium.InternalCancel);
224
224
225 return medium;
225 return medium;
226 }
226 }
227
227
228 public IPromiseBase Then(Action success,ErrorHandler error)
229 {
230 return Then(x => success(), error);
231 }
232
233 public IPromiseBase Then(Action success)
234 {
235 return Then(success);
236 }
237
228 /// <summary>
238 /// <summary>
229 /// Adds new handlers to this promise.
239 /// Adds new handlers to this promise.
230 /// </summary>
240 /// </summary>
231 /// <param name="success">The handler of the successfully completed operation.
241 /// <param name="success">The handler of the successfully completed operation.
232 /// This handler will recieve an operation result as a parameter.</param>
242 /// This handler will recieve an operation result as a parameter.</param>
233 /// <param name="error">Handles an exception that may occur during the operation and returns the value which will be used as the result of the operation.</param>
243 /// <param name="error">Handles an exception that may occur during the operation and returns the value which will be used as the result of the operation.</param>
234 /// <returns>The new promise chained to this one.</returns>
244 /// <returns>The new promise chained to this one.</returns>
235 public Promise<T> Then(ResultHandler<T> success, ErrorHandler<T> error) {
245 public IPromise<T> Then(ResultHandler<T> success, ErrorHandler<T> error) {
236 if (success == null && error == null)
246 if (success == null && error == null)
237 return this;
247 return this;
238
248
239 var medium = new Promise<T>(this, true);
249 var medium = new Promise<T>(this, true);
240
250
241 ResultHandler<T> resultHandler;
251 ResultHandler<T> resultHandler;
242 ErrorHandler errorHandler;
252 ErrorHandler errorHandler;
243
253
244 if (success != null)
254 if (success != null)
245 resultHandler = x => {
255 resultHandler = x => {
246 success(x);
256 success(x);
247 medium.Resolve(x);
257 medium.Resolve(x);
248 };
258 };
249 else
259 else
250 resultHandler = medium.Resolve;
260 resultHandler = medium.Resolve;
251
261
252 if (error != null)
262 if (error != null)
253 errorHandler = x => {
263 errorHandler = x => {
254 try {
264 try {
255 medium.Resolve(error(x));
265 medium.Resolve(error(x));
256 } catch(Exception e) {
266 } catch(Exception e) {
257 medium.Reject(e);
267 medium.Reject(e);
258 }
268 }
259 };
269 };
260 else
270 else
261 errorHandler = medium.Reject;
271 errorHandler = medium.Reject;
262
272
263 AddHandler(resultHandler, errorHandler, medium.InternalCancel);
273 AddHandler(resultHandler, errorHandler, medium.InternalCancel);
264
274
265 return medium;
275 return medium;
266 }
276 }
267
277
268
278
269 public Promise<T> Then(ResultHandler<T> success) {
279 public IPromise<T> Then(ResultHandler<T> success) {
270 if (success == null)
280 if (success == null)
271 return this;
281 return this;
272
282
273 var medium = new Promise<T>(this, true);
283 var medium = new Promise<T>(this, true);
274
284
275 ResultHandler<T> resultHandler;
285 ResultHandler<T> resultHandler;
276
286
277 if (success != null)
287 if (success != null)
278 resultHandler = x => {
288 resultHandler = x => {
279 success(x);
289 success(x);
280 medium.Resolve(x);
290 medium.Resolve(x);
281 };
291 };
282 else
292 else
283 resultHandler = medium.Resolve;
293 resultHandler = medium.Resolve;
284
294
285 AddHandler(resultHandler, medium.Reject, medium.InternalCancel);
295 AddHandler(resultHandler, medium.Reject, medium.InternalCancel);
286
296
287 return medium;
297 return medium;
288 }
298 }
289
299
290 public Promise<T> Error(ErrorHandler error) {
300 public IPromise<T> Error(ErrorHandler error) {
291 return Then(null, error);
301 return Then((ResultHandler<T>)null, error);
292 }
302 }
293
303
294 /// <summary>
304 /// <summary>
295 /// Handles error and allows to keep the promise.
305 /// Handles error and allows to keep the promise.
296 /// </summary>
306 /// </summary>
297 /// <remarks>
307 /// <remarks>
298 /// If the specified handler throws an exception, this exception will be used to reject the promise.
308 /// If the specified handler throws an exception, this exception will be used to reject the promise.
299 /// </remarks>
309 /// </remarks>
300 /// <param name="handler">The error handler which returns the result of the promise.</param>
310 /// <param name="handler">The error handler which returns the result of the promise.</param>
301 /// <returns>New promise.</returns>
311 /// <returns>New promise.</returns>
302 public Promise<T> Error(ErrorHandler<T> handler) {
312 public IPromise<T> Error(ErrorHandler<T> handler) {
303 if (handler == null)
313 if (handler == null)
304 return this;
314 return this;
305
315
306 var medium = new Promise<T>(this, true);
316 var medium = new Promise<T>(this, true);
307
317
308 AddHandler(
318 AddHandler(
309 null,
319 null,
310 e => {
320 e => {
311 try {
321 try {
312 medium.Resolve(handler(e));
322 medium.Resolve(handler(e));
313 } catch (Exception e2) {
323 } catch (Exception e2) {
314 medium.Reject(e2);
324 medium.Reject(e2);
315 }
325 }
316 },
326 },
317 medium.InternalCancel
327 medium.InternalCancel
318 );
328 );
319
329
320 return medium;
330 return medium;
321 }
331 }
322
332
323 public Promise<T> Anyway(Action handler) {
333 public IPromise<T> Anyway(Action handler) {
324 if (handler == null)
334 if (handler == null)
325 return this;
335 return this;
326
336
327 var medium = new Promise<T>();
337 var medium = new Promise<T>();
328
338
329 AddHandler(
339 AddHandler(
330 x => {
340 x => {
331 // to avoid handler being called multiple times we handle exception by ourselfs
341 // to avoid handler being called multiple times we handle exception by ourselfs
332 try {
342 try {
333 handler();
343 handler();
334 medium.Resolve(x);
344 medium.Resolve(x);
335 } catch (Exception e) {
345 } catch (Exception e) {
336 medium.Reject(e);
346 medium.Reject(e);
337 }
347 }
338 },
348 },
339
349
340 e => {
350 e => {
341 try {
351 try {
342 handler();
352 handler();
343 } catch { }
353 } catch { }
344 medium.Reject(e);
354 medium.Reject(e);
345 },
355 },
346
356
347 medium.InternalCancel
357 medium.InternalCancel
348 );
358 );
349
359
350 return medium;
360 return medium;
351 }
361 }
352
362
353 /// <summary>
363 /// <summary>
354 /// ΠŸΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ‚ ΠΏΡ€Π΅ΠΎΠ±Ρ€Π°Π·ΠΎΠ²Π°Ρ‚ΡŒ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ выполСния ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ ΠΊ Π½ΠΎΠ²ΠΎΠΌΡƒ Ρ‚ΠΈΠΏΡƒ.
364 /// ΠŸΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ‚ ΠΏΡ€Π΅ΠΎΠ±Ρ€Π°Π·ΠΎΠ²Π°Ρ‚ΡŒ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ выполСния ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ ΠΊ Π½ΠΎΠ²ΠΎΠΌΡƒ Ρ‚ΠΈΠΏΡƒ.
355 /// </summary>
365 /// </summary>
356 /// <typeparam name="TNew">Новый Ρ‚ΠΈΠΏ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π°.</typeparam>
366 /// <typeparam name="TNew">Новый Ρ‚ΠΈΠΏ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π°.</typeparam>
357 /// <param name="mapper">ΠŸΡ€Π΅ΠΎΠ±Ρ€Π°Π·ΠΎΠ²Π°Π½ΠΈΠ΅ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π° ΠΊ Π½ΠΎΠ²ΠΎΠΌΡƒ Ρ‚ΠΈΠΏΡƒ.</param>
367 /// <param name="mapper">ΠŸΡ€Π΅ΠΎΠ±Ρ€Π°Π·ΠΎΠ²Π°Π½ΠΈΠ΅ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π° ΠΊ Π½ΠΎΠ²ΠΎΠΌΡƒ Ρ‚ΠΈΠΏΡƒ.</param>
358 /// <param name="error">ΠžΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊ ошибки. Π”Π°Π½Π½Ρ‹ΠΉ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊ ΠΏΠΎΠ»ΡƒΡ‡ΠΈΡ‚
368 /// <param name="error">ΠžΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊ ошибки. Π”Π°Π½Π½Ρ‹ΠΉ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊ ΠΏΠΎΠ»ΡƒΡ‡ΠΈΡ‚
359 /// ΠΈΡΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅ возникшСС ΠΏΡ€ΠΈ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ.</param>
369 /// ΠΈΡΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅ возникшСС ΠΏΡ€ΠΈ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ.</param>
360 /// <returns>НовоС ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅, ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠ΅ Π±ΡƒΠ΄Π΅Ρ‚ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ ΠΏΡ€ΠΈ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ исходного обСщания.</returns>
370 /// <returns>НовоС ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅, ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠ΅ Π±ΡƒΠ΄Π΅Ρ‚ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ ΠΏΡ€ΠΈ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ исходного обСщания.</returns>
361 public Promise<TNew> Map<TNew>(ResultMapper<T, TNew> mapper, ErrorHandler error) {
371 public IPromise<TNew> Map<TNew>(ResultMapper<T, TNew> mapper, ErrorHandler error) {
362 if (mapper == null)
372 if (mapper == null)
363 throw new ArgumentNullException("mapper");
373 throw new ArgumentNullException("mapper");
364
374
365 // создаСм ΠΏΡ€ΠΈΡ†Π΅ΠΏΠ»Π΅Π½Π½ΠΎΠ΅ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅
375 // создаСм ΠΏΡ€ΠΈΡ†Π΅ΠΏΠ»Π΅Π½Π½ΠΎΠ΅ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅
366 var chained = new Promise<TNew>();
376 var chained = new Promise<TNew>();
367
377
368 ResultHandler<T> resultHandler = result => chained.Resolve(mapper(result));
378 ResultHandler<T> resultHandler = result => chained.Resolve(mapper(result));
369 ErrorHandler errorHandler = delegate(Exception e) {
379 ErrorHandler errorHandler = delegate(Exception e) {
370 if (error != null)
380 if (error != null)
371 try {
381 try {
372 error(e);
382 error(e);
373 } catch { }
383 } catch { }
374 // Π² случаС ошибки Π½ΡƒΠΆΠ½ΠΎ ΠΏΠ΅Ρ€Π΅Π΄Π°Ρ‚ΡŒ ΠΈΡΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅ дальшС ΠΏΠΎ Ρ†Π΅ΠΏΠΎΡ‡ΠΊΠ΅
384 // Π² случаС ошибки Π½ΡƒΠΆΠ½ΠΎ ΠΏΠ΅Ρ€Π΅Π΄Π°Ρ‚ΡŒ ΠΈΡΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅ дальшС ΠΏΠΎ Ρ†Π΅ΠΏΠΎΡ‡ΠΊΠ΅
375 chained.Reject(e);
385 chained.Reject(e);
376 };
386 };
377
387
378
388
379 AddHandler(
389 AddHandler(
380 resultHandler,
390 resultHandler,
381 errorHandler,
391 errorHandler,
382 chained.InternalCancel
392 chained.InternalCancel
383 );
393 );
384
394
385 return chained;
395 return chained;
386 }
396 }
387
397
388 public Promise<TNew> Map<TNew>(ResultMapper<T, TNew> mapper) {
398 public IPromise<TNew> Map<TNew>(ResultMapper<T, TNew> mapper) {
389 return Map(mapper, null);
399 return Map(mapper, null);
390 }
400 }
391
401
392 /// <summary>
402 /// <summary>
393 /// БцСпляСт нСсколько аснхронных ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΉ. Указанная асинхронная опСрация Π±ΡƒΠ΄Π΅Ρ‚ Π²Ρ‹Π·Π²Π°Π½Π° послС
403 /// БцСпляСт нСсколько аснхронных ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΉ. Указанная асинхронная опСрация Π±ΡƒΠ΄Π΅Ρ‚ Π²Ρ‹Π·Π²Π°Π½Π° послС
394 /// выполнСния Ρ‚Π΅ΠΊΡƒΡ‰Π΅ΠΉ, Π° Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ Ρ‚Π΅ΠΊΡƒΡ‰Π΅ΠΉ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ ΠΌΠΎΠΆΠ΅Ρ‚ Π±Ρ‹Ρ‚ΡŒ использован для ΠΈΠ½ΠΈΡ†ΠΈΠ°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ
404 /// выполнСния Ρ‚Π΅ΠΊΡƒΡ‰Π΅ΠΉ, Π° Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ Ρ‚Π΅ΠΊΡƒΡ‰Π΅ΠΉ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ ΠΌΠΎΠΆΠ΅Ρ‚ Π±Ρ‹Ρ‚ΡŒ использован для ΠΈΠ½ΠΈΡ†ΠΈΠ°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ
395 /// Π½ΠΎΠ²ΠΎΠΉ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ.
405 /// Π½ΠΎΠ²ΠΎΠΉ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ.
396 /// </summary>
406 /// </summary>
397 /// <typeparam name="TNew">Π’ΠΈΠΏ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π° ΡƒΠΊΠ°Π·Π°Π½Π½ΠΎΠΉ асинхронной ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ.</typeparam>
407 /// <typeparam name="TNew">Π’ΠΈΠΏ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π° ΡƒΠΊΠ°Π·Π°Π½Π½ΠΎΠΉ асинхронной ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ.</typeparam>
398 /// <param name="chained">Асинхронная опСрация, которая Π΄ΠΎΠ»ΠΆΠ½Π° Π±ΡƒΠ΄Π΅Ρ‚ Π½Π°Ρ‡Π°Ρ‚ΡŒΡΡ послС выполнСния Ρ‚Π΅ΠΊΡƒΡ‰Π΅ΠΉ.</param>
408 /// <param name="chained">Асинхронная опСрация, которая Π΄ΠΎΠ»ΠΆΠ½Π° Π±ΡƒΠ΄Π΅Ρ‚ Π½Π°Ρ‡Π°Ρ‚ΡŒΡΡ послС выполнСния Ρ‚Π΅ΠΊΡƒΡ‰Π΅ΠΉ.</param>
399 /// <param name="error">ΠžΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊ ошибки. Π”Π°Π½Π½Ρ‹ΠΉ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊ ΠΏΠΎΠ»ΡƒΡ‡ΠΈΡ‚
409 /// <param name="error">ΠžΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊ ошибки. Π”Π°Π½Π½Ρ‹ΠΉ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊ ΠΏΠΎΠ»ΡƒΡ‡ΠΈΡ‚
400 /// ΠΈΡΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅ возникшСС ΠΏΡ€ΠΈ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ Ρ‚Π΅ΠΊΡƒΠ΅Ρ‰ΠΉ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ.</param>
410 /// ΠΈΡΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅ возникшСС ΠΏΡ€ΠΈ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ Ρ‚Π΅ΠΊΡƒΠ΅Ρ‰ΠΉ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ.</param>
401 /// <returns>НовоС ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅, ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠ΅ Π±ΡƒΠ΄Π΅Ρ‚ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ ΠΏΠΎ ΠΎΠΊΠΎΠ½Ρ‡Π°Π½ΠΈΡŽ ΡƒΠΊΠ°Π·Π°Π½Π½ΠΎΠΉ аснхронной ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ.</returns>
411 /// <returns>НовоС ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅, ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠ΅ Π±ΡƒΠ΄Π΅Ρ‚ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ ΠΏΠΎ ΠΎΠΊΠΎΠ½Ρ‡Π°Π½ΠΈΡŽ ΡƒΠΊΠ°Π·Π°Π½Π½ΠΎΠΉ аснхронной ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ.</returns>
402 public Promise<TNew> Chain<TNew>(ChainedOperation<T, TNew> chained, ErrorHandler error) {
412 public IPromise<TNew> Chain<TNew>(ChainedOperation<T, TNew> chained, ErrorHandler error) {
403
413
404 // ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΠ° Π² Ρ‚ΠΎΠΌ, Ρ‡Ρ‚ΠΎ Π½Π° ΠΌΠΎΠΌΠ΅Π½Ρ‚ связывания Π΅Ρ‰Π΅ Π½Π΅ Π½Π°Ρ‡Π°Ρ‚Π° асинхронная опСрация, поэтому Π½ΡƒΠΆΠ½ΠΎ
414 // ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΠ° Π² Ρ‚ΠΎΠΌ, Ρ‡Ρ‚ΠΎ Π½Π° ΠΌΠΎΠΌΠ΅Π½Ρ‚ связывания Π΅Ρ‰Π΅ Π½Π΅ Π½Π°Ρ‡Π°Ρ‚Π° асинхронная опСрация, поэтому Π½ΡƒΠΆΠ½ΠΎ
405 // ΡΠΎΠ·Π΄Π°Ρ‚ΡŒ посрСдника, ΠΊ ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠΌΡƒ Π±ΡƒΠ΄ΡƒΡ‚ ΠΏΠΎΠ΄Π²Ρ‹Π·ΡΠ²Π°Ρ‚ΡŒΡΡ ΡΠ»Π΅Π΄ΡƒΡŽΡ‰ΠΈΠ΅ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊΠΈ.
415 // ΡΠΎΠ·Π΄Π°Ρ‚ΡŒ посрСдника, ΠΊ ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠΌΡƒ Π±ΡƒΠ΄ΡƒΡ‚ ΠΏΠΎΠ΄Π²Ρ‹Π·ΡΠ²Π°Ρ‚ΡŒΡΡ ΡΠ»Π΅Π΄ΡƒΡŽΡ‰ΠΈΠ΅ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊΠΈ.
406 // ΠΊΠΎΠ³Π΄Π° Π±ΡƒΠ΄Π΅Ρ‚ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½Π° Ρ€Π΅Π°Π»ΡŒΠ½Π°Ρ асинхронная опСрация, ΠΎΠ½Π° ΠΎΠ±Ρ€Π°Ρ‚ΠΈΡ‚ΡŒΡΡ ΠΊ посрСднику, Ρ‡Ρ‚ΠΎΠ±Ρ‹
416 // ΠΊΠΎΠ³Π΄Π° Π±ΡƒΠ΄Π΅Ρ‚ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½Π° Ρ€Π΅Π°Π»ΡŒΠ½Π°Ρ асинхронная опСрация, ΠΎΠ½Π° ΠΎΠ±Ρ€Π°Ρ‚ΠΈΡ‚ΡŒΡΡ ΠΊ посрСднику, Ρ‡Ρ‚ΠΎΠ±Ρ‹
407 // ΠΏΠ΅Ρ€Π΅Π΄Π°Ρ‚ΡŒ Ρ‡Π΅Ρ€Π΅Π· Π½Π΅Π³ΠΎ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ Ρ€Π°Π±ΠΎΡ‚Ρ‹.
417 // ΠΏΠ΅Ρ€Π΅Π΄Π°Ρ‚ΡŒ Ρ‡Π΅Ρ€Π΅Π· Π½Π΅Π³ΠΎ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ Ρ€Π°Π±ΠΎΡ‚Ρ‹.
408 var medium = new Promise<TNew>(this, true);
418 var medium = new Promise<TNew>(this, true);
409
419
410 ResultHandler<T> resultHandler = delegate(T result) {
420 ResultHandler<T> resultHandler = delegate(T result) {
411 if (medium.IsCancelled)
421 if (medium.IsCancelled)
412 return;
422 return;
413
423
414 var promise = chained(result);
424 var promise = chained(result);
415
425
416 // notify chained operation that it's not needed
426 // notify chained operation that it's not needed
417 medium.Cancelled(() => promise.Cancel());
427 medium.Cancelled(() => promise.Cancel());
418 promise.Then(
428 promise.Then(
419 x => medium.Resolve(x),
429 x => medium.Resolve(x),
420 e => medium.Reject(e)
430 e => medium.Reject(e)
421 );
431 );
422 };
432 };
423
433
424 ErrorHandler errorHandler = delegate(Exception e) {
434 ErrorHandler errorHandler = delegate(Exception e) {
425 if (error != null)
435 if (error != null)
426 error(e);
436 error(e);
427 // Π² случаС ошибки Π½ΡƒΠΆΠ½ΠΎ ΠΏΠ΅Ρ€Π΅Π΄Π°Ρ‚ΡŒ ΠΈΡΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅ дальшС ΠΏΠΎ Ρ†Π΅ΠΏΠΎΡ‡ΠΊΠ΅
437 // Π² случаС ошибки Π½ΡƒΠΆΠ½ΠΎ ΠΏΠ΅Ρ€Π΅Π΄Π°Ρ‚ΡŒ ΠΈΡΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅ дальшС ΠΏΠΎ Ρ†Π΅ΠΏΠΎΡ‡ΠΊΠ΅
428 medium.Reject(e);
438 medium.Reject(e);
429 };
439 };
430
440
431 AddHandler(
441 AddHandler(
432 resultHandler,
442 resultHandler,
433 errorHandler,
443 errorHandler,
434 medium.InternalCancel
444 medium.InternalCancel
435 );
445 );
436
446
437 return medium;
447 return medium;
438 }
448 }
439
449
440 public Promise<TNew> Chain<TNew>(ChainedOperation<T, TNew> chained) {
450 public IPromise<TNew> Chain<TNew>(ChainedOperation<T, TNew> chained) {
441 return Chain(chained, null);
451 return Chain(chained, null);
442 }
452 }
443
453
444 public Promise<T> Cancelled(Action handler) {
454 public IPromise<T> Cancelled(Action handler) {
445 AddHandler(null, null, handler);
455 AddHandler(null, null, handler);
446 return this;
456 return this;
447 }
457 }
448
458
449 /// <summary>
459 /// <summary>
450 /// Adds the specified handler for all cases (success, error, cancel)
460 /// Adds the specified handler for all cases (success, error, cancel)
451 /// </summary>
461 /// </summary>
452 /// <param name="handler">The handler that will be called anyway</param>
462 /// <param name="handler">The handler that will be called anyway</param>
453 /// <returns>self</returns>
463 /// <returns>self</returns>
454 public Promise<T> Finally(Action handler) {
464 public IPromise<T> Finally(Action handler) {
455 if (handler == null)
465 if (handler == null)
456 throw new ArgumentNullException("handler");
466 throw new ArgumentNullException("handler");
457 AddHandler(
467 AddHandler(
458 x => handler(),
468 x => handler(),
459 e => handler(),
469 e => handler(),
460 handler
470 handler
461 );
471 );
462 return this;
472 return this;
463 }
473 }
464
474
465 /// <summary>
475 /// <summary>
466 /// ДоТидаСтся ΠΎΡ‚Π»ΠΎΠΆΠ΅Π½Π½ΠΎΠ³ΠΎ обСщания ΠΈ Π² случаС успСха, Π²ΠΎΠ·Π²Ρ€Π°Ρ‰Π°Π΅Ρ‚
476 /// ДоТидаСтся ΠΎΡ‚Π»ΠΎΠΆΠ΅Π½Π½ΠΎΠ³ΠΎ обСщания ΠΈ Π² случаС успСха, Π²ΠΎΠ·Π²Ρ€Π°Ρ‰Π°Π΅Ρ‚
467 /// Π΅Π³ΠΎ, Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚, Π² ΠΏΡ€ΠΎΡ‚ΠΈΠ²Π½ΠΎΠΌ случаС бросаСт ΠΈΡΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅.
477 /// Π΅Π³ΠΎ, Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚, Π² ΠΏΡ€ΠΎΡ‚ΠΈΠ²Π½ΠΎΠΌ случаС бросаСт ΠΈΡΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅.
468 /// </summary>
478 /// </summary>
469 /// <remarks>
479 /// <remarks>
470 /// <para>
480 /// <para>
471 /// Если ΠΎΠΆΠΈΠ΄Π°Π½ΠΈΠ΅ обСщания Π±Ρ‹Π»ΠΎ ΠΏΡ€Π΅Ρ€Π²Π°Π½ΠΎ ΠΏΠΎ Ρ‚Π°ΠΉΠΌΠ°ΡƒΡ‚Ρƒ, это Π½Π΅ Π·Π½Π°Ρ‡ΠΈΡ‚,
481 /// Если ΠΎΠΆΠΈΠ΄Π°Π½ΠΈΠ΅ обСщания Π±Ρ‹Π»ΠΎ ΠΏΡ€Π΅Ρ€Π²Π°Π½ΠΎ ΠΏΠΎ Ρ‚Π°ΠΉΠΌΠ°ΡƒΡ‚Ρƒ, это Π½Π΅ Π·Π½Π°Ρ‡ΠΈΡ‚,
472 /// Ρ‡Ρ‚ΠΎ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ Π±Ρ‹Π»ΠΎ ΠΎΡ‚ΠΌΠ΅Π½Π΅Π½ΠΎ ΠΈΠ»ΠΈ Ρ‡Ρ‚ΠΎ-Ρ‚ΠΎ Π² этом Ρ€ΠΎΠ΄Π΅, это Ρ‚ΠΎΠ»ΡŒΠΊΠΎ
482 /// Ρ‡Ρ‚ΠΎ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ Π±Ρ‹Π»ΠΎ ΠΎΡ‚ΠΌΠ΅Π½Π΅Π½ΠΎ ΠΈΠ»ΠΈ Ρ‡Ρ‚ΠΎ-Ρ‚ΠΎ Π² этом Ρ€ΠΎΠ΄Π΅, это Ρ‚ΠΎΠ»ΡŒΠΊΠΎ
473 /// ΠΎΠ·Π½Π°Ρ‡Π°Π΅Ρ‚, Ρ‡Ρ‚ΠΎ ΠΌΡ‹ Π΅Π³ΠΎ Π½Π΅ доТдались, ΠΎΠ΄Π½Π°ΠΊΠΎ всС зарСгистрированныС
483 /// ΠΎΠ·Π½Π°Ρ‡Π°Π΅Ρ‚, Ρ‡Ρ‚ΠΎ ΠΌΡ‹ Π΅Π³ΠΎ Π½Π΅ доТдались, ΠΎΠ΄Π½Π°ΠΊΠΎ всС зарСгистрированныС
474 /// ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊΠΈ, ΠΊΠ°ΠΊ Π±Ρ‹Π»ΠΈ Ρ‚Π°ΠΊ ΠΎΡΡ‚Π°Π»ΠΈΡΡŒ ΠΈ ΠΎΠ½ΠΈ Π±ΡƒΠ΄ΡƒΡ‚ Π²Ρ‹Π·Π²Π°Π½Ρ‹, ΠΊΠΎΠ³Π΄Π°
484 /// ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊΠΈ, ΠΊΠ°ΠΊ Π±Ρ‹Π»ΠΈ Ρ‚Π°ΠΊ ΠΎΡΡ‚Π°Π»ΠΈΡΡŒ ΠΈ ΠΎΠ½ΠΈ Π±ΡƒΠ΄ΡƒΡ‚ Π²Ρ‹Π·Π²Π°Π½Ρ‹, ΠΊΠΎΠ³Π΄Π°
475 /// ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ Π±ΡƒΠ΄Π΅Ρ‚ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ.
485 /// ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ Π±ΡƒΠ΄Π΅Ρ‚ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ.
476 /// </para>
486 /// </para>
477 /// <para>
487 /// <para>
478 /// Π’Π°ΠΊΠΎΠ΅ ΠΏΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠ΅ Π²ΠΏΠΎΠ»Π½Π΅ ΠΎΠΏΡ€Π°Π²Π΄Π°Π½ΠΎ ΠΏΠΎΡΠΊΠΎΠ»ΡŒΠΊΡƒ Ρ‚Π°ΠΉΠΌΠ°ΡƒΡ‚ ΠΌΠΎΠΆΠ΅Ρ‚ ΠΈΡΡ‚Π΅Ρ‡ΡŒ
488 /// Π’Π°ΠΊΠΎΠ΅ ΠΏΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠ΅ Π²ΠΏΠΎΠ»Π½Π΅ ΠΎΠΏΡ€Π°Π²Π΄Π°Π½ΠΎ ΠΏΠΎΡΠΊΠΎΠ»ΡŒΠΊΡƒ Ρ‚Π°ΠΉΠΌΠ°ΡƒΡ‚ ΠΌΠΎΠΆΠ΅Ρ‚ ΠΈΡΡ‚Π΅Ρ‡ΡŒ
479 /// Π² Ρ‚ΠΎΡ‚ ΠΌΠΎΠΌΠ΅Π½Ρ‚, ΠΊΠΎΠ³Π΄Π° Π½Π°Ρ‡Π°Π»Π°ΡΡŒ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° Ρ†Π΅ΠΏΠΎΡ‡ΠΊΠΈ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊΠΎΠ², ΠΈ
489 /// Π² Ρ‚ΠΎΡ‚ ΠΌΠΎΠΌΠ΅Π½Ρ‚, ΠΊΠΎΠ³Π΄Π° Π½Π°Ρ‡Π°Π»Π°ΡΡŒ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° Ρ†Π΅ΠΏΠΎΡ‡ΠΊΠΈ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊΠΎΠ², ΠΈ
480 /// ΠΊ Ρ‚ΠΎΠΌΡƒ ΠΆΠ΅ Ρ‚Π΅ΠΊΡƒΡ‰Π΅Π΅ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ ΠΌΠΎΠΆΠ΅Ρ‚ ΡΡ‚ΠΎΡΡ‚ΡŒ Π² Ρ†Π΅ΠΏΠΎΡ‡ΠΊΠ΅ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠΉ ΠΈ Π΅Π³ΠΎ
490 /// ΠΊ Ρ‚ΠΎΠΌΡƒ ΠΆΠ΅ Ρ‚Π΅ΠΊΡƒΡ‰Π΅Π΅ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ ΠΌΠΎΠΆΠ΅Ρ‚ ΡΡ‚ΠΎΡΡ‚ΡŒ Π² Ρ†Π΅ΠΏΠΎΡ‡ΠΊΠ΅ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠΉ ΠΈ Π΅Π³ΠΎ
481 /// ΠΎΡ‚ΠΊΠ»ΠΎΠ½Π΅Π½ΠΈΠ΅ ΠΌΠΎΠΆΠ΅Ρ‚ привСсти ΠΊ Π½Π΅ΠΏΡ€ΠΎΠ³Π½ΠΎΠ·ΠΈΡ€ΡƒΠ΅ΠΌΠΎΠΌΡƒ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρƒ.
491 /// ΠΎΡ‚ΠΊΠ»ΠΎΠ½Π΅Π½ΠΈΠ΅ ΠΌΠΎΠΆΠ΅Ρ‚ привСсти ΠΊ Π½Π΅ΠΏΡ€ΠΎΠ³Π½ΠΎΠ·ΠΈΡ€ΡƒΠ΅ΠΌΠΎΠΌΡƒ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρƒ.
482 /// </para>
492 /// </para>
483 /// </remarks>
493 /// </remarks>
484 /// <param name="timeout">ВрСмя оТидания</param>
494 /// <param name="timeout">ВрСмя оТидания</param>
485 /// <returns>Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ выполнСния обСщания</returns>
495 /// <returns>Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ выполнСния обСщания</returns>
486 public T Join(int timeout) {
496 public T Join(int timeout) {
487 var evt = new ManualResetEvent(false);
497 var evt = new ManualResetEvent(false);
488 Anyway(() => evt.Set());
498 Anyway(() => evt.Set());
489 Cancelled(() => evt.Set());
499 Cancelled(() => evt.Set());
490
500
491 if (!evt.WaitOne(timeout, true))
501 if (!evt.WaitOne(timeout, true))
492 throw new TimeoutException();
502 throw new TimeoutException();
493
503
494 switch (m_state) {
504 switch (m_state) {
495 case SucceededState:
505 case SucceededState:
496 return m_result;
506 return m_result;
497 case CancelledState:
507 case CancelledState:
498 throw new OperationCanceledException();
508 throw new OperationCanceledException();
499 case RejectedState:
509 case RejectedState:
500 throw new TargetInvocationException(m_error);
510 throw new TargetInvocationException(m_error);
501 default:
511 default:
502 throw new ApplicationException(String.Format("Invalid promise state {0}", m_state));
512 throw new ApplicationException(String.Format("Invalid promise state {0}", m_state));
503 }
513 }
504 }
514 }
505
515
506 public T Join() {
516 public T Join() {
507 return Join(Timeout.Infinite);
517 return Join(Timeout.Infinite);
508 }
518 }
509
519
510 void AddHandler(ResultHandler<T> success, ErrorHandler error, Action cancel) {
520 void AddHandler(ResultHandler<T> success, ErrorHandler error, Action cancel) {
511 Interlocked.Increment(ref m_childrenCount);
521 Interlocked.Increment(ref m_childrenCount);
512
522
513 HandlerDescriptor handler = new HandlerDescriptor {
523 HandlerDescriptor handler = new HandlerDescriptor {
514 resultHandler = success,
524 resultHandler = success,
515 errorHandler = error,
525 errorHandler = error,
516 cancellHandler = cancel
526 cancellHandler = cancel
517 };
527 };
518
528
519 bool queued;
529 bool queued;
520
530
521 if (!IsResolved) {
531 if (!IsResolved) {
522 m_handlers.Enqueue(handler);
532 m_handlers.Enqueue(handler);
523 queued = true;
533 queued = true;
524 } else {
534 } else {
525 // the promise is in resolved state, just invoke the handled with minimum overhead
535 // the promise is in resolved state, just invoke the handled with minimum overhead
526 queued = false;
536 queued = false;
527 InvokeHandler(handler);
537 InvokeHandler(handler);
528 }
538 }
529
539
530 if (queued && IsResolved && m_handlers.TryDequeue(out handler))
540 if (queued && IsResolved && m_handlers.TryDequeue(out handler))
531 // if the promise have been resolved while we was adding handler to the queue
541 // if the promise have been resolved while we was adding handler to the queue
532 // we can't guarantee that someone is still processing it
542 // we can't guarantee that someone is still processing it
533 // therefore we will fetch a handler from the queue and execute it
543 // therefore we will fetch a handler from the queue and execute it
534 // note that fetched handler may be not the one we have added
544 // note that fetched handler may be not the one we have added
535 InvokeHandler(handler);
545 InvokeHandler(handler);
536
546
537 }
547 }
538
548
539 void InvokeHandler(HandlerDescriptor handler) {
549 void InvokeHandler(HandlerDescriptor handler) {
540 switch (m_state) {
550 switch (m_state) {
541 case SucceededState:
551 case SucceededState:
542 handler.Resolve(m_result);
552 handler.Resolve(m_result);
543 break;
553 break;
544 case RejectedState:
554 case RejectedState:
545 handler.Reject(m_error);
555 handler.Reject(m_error);
546 break;
556 break;
547 case CancelledState:
557 case CancelledState:
548 handler.Cancel();
558 handler.Cancel();
549 break;
559 break;
550 default:
560 default:
551 // do nothing
561 // do nothing
552 return;
562 return;
553 }
563 }
554 }
564 }
555
565
556 protected virtual void OnStateChanged() {
566 protected virtual void OnStateChanged() {
557 HandlerDescriptor handler;
567 HandlerDescriptor handler;
558 while (m_handlers.TryDequeue(out handler))
568 while (m_handlers.TryDequeue(out handler))
559 InvokeHandler(handler);
569 InvokeHandler(handler);
560 }
570 }
561
571
562 public bool IsExclusive {
572 public bool IsExclusive {
563 get {
573 get {
564 return m_childrenCount <= 1;
574 return m_childrenCount <= 1;
565 }
575 }
566 }
576 }
567
577
568 protected bool Cancel(bool dependencies) {
578 protected bool Cancel(bool dependencies) {
569 if (BeginTransit()) {
579 if (BeginTransit()) {
570 CompleteTransit(CancelledState);
580 CompleteTransit(CancelledState);
571 OnStateChanged();
581 OnStateChanged();
572
582
573 if (dependencies && m_parent != null && m_parent.IsExclusive)
583 if (dependencies && m_parent != null && m_parent.IsExclusive)
574 m_parent.Cancel();
584 m_parent.Cancel();
575
585
576 return true;
586 return true;
577 } else {
587 } else {
578 return false;
588 return false;
579 }
589 }
580 }
590 }
581
591
582 /// <summary>
592 /// <summary>
583 /// ΠžΠ±ΡŠΠ΅Π΄ΠΈΠ½ΡΠ΅Ρ‚ нСсколько ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠΉ Π² ΠΎΠ΄Π½ΠΎ, Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠΌ ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠ³ΠΎ являСтся массив Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠ² Π΄Ρ€ΡƒΠ³ΠΈΡ… ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠΉ.
593 /// ΠžΠ±ΡŠΠ΅Π΄ΠΈΠ½ΡΠ΅Ρ‚ нСсколько ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠΉ Π² ΠΎΠ΄Π½ΠΎ, Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠΌ ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠ³ΠΎ являСтся массив Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠ² Π΄Ρ€ΡƒΠ³ΠΈΡ… ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠΉ.
584 /// Если хотябы ΠΎΠ΄Π½ΠΎ ΠΈΠ· ΠΏΠ΅Ρ€Π΅Π΄Π°Π½Π½Ρ‹Ρ… ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠΉ Π½Π΅ Π±ΡƒΠ΄Π΅Ρ‚ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ, Ρ‚ΠΎ Π½ΠΎΠ²ΠΎΠ΅ ΠΎΠ±Π΅Ρ‰Π΅Π½ΠΈΠ΅ Ρ‚ΠΎΠΆΠ΅ Π½Π΅ Π±ΡƒΠ΄Π΅Ρ‚ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ.
594 /// Если хотябы ΠΎΠ΄Π½ΠΎ ΠΈΠ· ΠΏΠ΅Ρ€Π΅Π΄Π°Π½Π½Ρ‹Ρ… ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠΉ Π½Π΅ Π±ΡƒΠ΄Π΅Ρ‚ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ, Ρ‚ΠΎ Π½ΠΎΠ²ΠΎΠ΅ ΠΎΠ±Π΅Ρ‰Π΅Π½ΠΈΠ΅ Ρ‚ΠΎΠΆΠ΅ Π½Π΅ Π±ΡƒΠ΄Π΅Ρ‚ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ.
585 /// ΠŸΡ€ΠΈ ΠΎΡ‚ΠΌΠ΅Π½Π΅ Π½ΠΎΠ²ΠΎΠ³ΠΎ обСщания, ΠΏΠ΅Ρ€Π΅Π΄Π°Π½Π½Ρ‹Π΅ обСщания Ρ‚Π°ΠΊΠΆΠ΅ Π±ΡƒΠ΄ΡƒΡ‚ ΠΎΡ‚ΠΌΠ΅Π½Π΅Π½Ρ‹, Ссли Π½ΠΈΠΊΡ‚ΠΎ большС Π½Π° Π½ΠΈΡ… Π½Π΅ подписан.
595 /// ΠŸΡ€ΠΈ ΠΎΡ‚ΠΌΠ΅Π½Π΅ Π½ΠΎΠ²ΠΎΠ³ΠΎ обСщания, ΠΏΠ΅Ρ€Π΅Π΄Π°Π½Π½Ρ‹Π΅ обСщания Ρ‚Π°ΠΊΠΆΠ΅ Π±ΡƒΠ΄ΡƒΡ‚ ΠΎΡ‚ΠΌΠ΅Π½Π΅Π½Ρ‹, Ссли Π½ΠΈΠΊΡ‚ΠΎ большС Π½Π° Π½ΠΈΡ… Π½Π΅ подписан.
586 /// </summary>
596 /// </summary>
587 /// <param name="promises">Бписок ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠΉ. Если список пустой, Ρ‚ΠΎ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚ΠΈΡ€ΡƒΡŽΡ‰Π΅Π΅ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ возвращаСтся ΡƒΠΆΠ΅ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½Π½Ρ‹ΠΌ.</param>
597 /// <param name="promises">Бписок ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠΉ. Если список пустой, Ρ‚ΠΎ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚ΠΈΡ€ΡƒΡŽΡ‰Π΅Π΅ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ возвращаСтся ΡƒΠΆΠ΅ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½Π½Ρ‹ΠΌ.</param>
588 /// <returns>ΠžΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ ΠΎΠ±ΡŠΠ΅Π΄ΠΈΠ½ΡΡŽΡ‰Π΅Π΅ Π² сСбС Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ ΠΏΠ΅Ρ€Π΅Π΄Π°Π½Π½Ρ‹Ρ… ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠΉ.</returns>
598 /// <returns>ΠžΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅ ΠΎΠ±ΡŠΠ΅Π΄ΠΈΠ½ΡΡŽΡ‰Π΅Π΅ Π² сСбС Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ ΠΏΠ΅Ρ€Π΅Π΄Π°Π½Π½Ρ‹Ρ… ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠΉ.</returns>
589 /// <exception cref="ArgumentNullException"><paramref name="promises"/> Π½Π΅ ΠΌΠΎΠΆΠ΅Ρ‚ Π±Ρ‹Ρ‚ΡŒ null</exception>
599 /// <exception cref="ArgumentNullException"><paramref name="promises"/> Π½Π΅ ΠΌΠΎΠΆΠ΅Ρ‚ Π±Ρ‹Ρ‚ΡŒ null</exception>
590 public static Promise<T[]> CreateComposite(IList<Promise<T>> promises) {
600 public static Promise<T[]> CreateComposite(IList<Promise<T>> promises) {
591 if (promises == null)
601 if (promises == null)
592 throw new ArgumentNullException();
602 throw new ArgumentNullException();
593
603
594 // создаСм аккумулятор для Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠ² ΠΈ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚ΠΈΡ€ΡƒΡŽΡ‰Π΅Π΅ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅
604 // создаСм аккумулятор для Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠ² ΠΈ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚ΠΈΡ€ΡƒΡŽΡ‰Π΅Π΅ ΠΎΠ±Π΅Ρ‰Π°Π½ΠΈΠ΅
595 var result = new T[promises.Count];
605 var result = new T[promises.Count];
596 var promise = new Promise<T[]>();
606 var promise = new Promise<T[]>();
597
607
598 // special case
608 // special case
599 if (promises.Count == 0) {
609 if (promises.Count == 0) {
600 promise.Resolve(result);
610 promise.Resolve(result);
601 return promise;
611 return promise;
602 }
612 }
603
613
604 int pending = promises.Count;
614 int pending = promises.Count;
605
615
606 for (int i = 0; i < promises.Count; i++) {
616 for (int i = 0; i < promises.Count; i++) {
607 var dest = i;
617 var dest = i;
608
618
609 promises[i].Then(
619 promises[i].Then(
610 x => {
620 x => {
611 result[dest] = x;
621 result[dest] = x;
612 if(Interlocked.Decrement(ref pending) == 0)
622 if(Interlocked.Decrement(ref pending) == 0)
613 promise.Resolve(result);
623 promise.Resolve(result);
614 },
624 },
615 e => promise.Reject(e)
625 e => promise.Reject(e)
616 );
626 );
617 }
627 }
618
628
619 promise.Cancelled(
629 promise.Cancelled(
620 () => {
630 () => {
621 foreach(var d in promises)
631 foreach(var d in promises)
622 if(d.IsExclusive)
632 if(d.IsExclusive)
623 d.Cancel();
633 d.Cancel();
624 }
634 }
625 );
635 );
626
636
627 return promise;
637 return promise;
628 }
638 }
629
639
630 public static Promise<T> ResultToPromise(T result) {
640 public static Promise<T> ResultToPromise(T result) {
631 var p = new Promise<T>();
641 var p = new Promise<T>();
632 p.Resolve(result);
642 p.Resolve(result);
633 return p;
643 return p;
634 }
644 }
635
645
636 public static Promise<T> ExceptionToPromise(Exception error) {
646 public static Promise<T> ExceptionToPromise(Exception error) {
637 if (error == null)
647 if (error == null)
638 throw new ArgumentNullException();
648 throw new ArgumentNullException();
639
649
640 var p = new Promise<T>();
650 var p = new Promise<T>();
641 p.Reject(error);
651 p.Reject(error);
642 return p;
652 return p;
643 }
653 }
644
654
645 }
655 }
646 }
656 }
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