| commit | author | age | ||
| a6c014 | 1 | /** |
| L | 2 | Copyright 2018 Google Inc. All rights reserved. |
| 3 | ||
| 4 | Licensed under the Apache License, Version 2.0 (the "License"); | |
| 5 | you may not use this file except in compliance with the License. | |
| 6 | You may obtain a copy of the License at: | |
| 7 | ||
| 8 | http://www.apache.org/licenses/LICENSE-2.0 | |
| 9 | ||
| 10 | Unless required by applicable law or agreed to in writing, software | |
| 11 | distributed under the License is distributed on an "AS IS" BASIS, | |
| 12 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 13 | See the License for the specific language governing permissions and | |
| 14 | limitations under the License. | |
| 15 | */ | |
| 16 | ||
| 17 | #import "FBLPromise.h" | |
| 18 | ||
| 19 | NS_ASSUME_NONNULL_BEGIN | |
| 20 | ||
| 21 | @interface FBLPromise<Value>(ThenAdditions) | |
| 22 | ||
| 23 | typedef id __nullable (^FBLPromiseThenWorkBlock)(Value __nullable value) NS_SWIFT_UNAVAILABLE(""); | |
| 24 | ||
| 25 | /** | |
| 26 | Creates a pending promise which eventually gets resolved with resolution returned from `work` | |
| 27 | block: either value, error or another promise. The `work` block is executed asynchronously only | |
| 28 | when the receiver is fulfilled. If receiver is rejected, the returned promise is also rejected with | |
| 29 | the same error. | |
| 30 | ||
| 31 | @param work A block to handle the value that receiver was fulfilled with. | |
| 32 | @return A new pending promise to be resolved with resolution returned from the `work` block. | |
| 33 | */ | |
| 34 | - (FBLPromise *)then:(FBLPromiseThenWorkBlock)work NS_SWIFT_UNAVAILABLE(""); | |
| 35 | ||
| 36 | /** | |
| 37 | Creates a pending promise which eventually gets resolved with resolution returned from `work` | |
| 38 | block: either value, error or another promise. The `work` block is executed asynchronously when the | |
| 39 | receiver is fulfilled. If receiver is rejected, the returned promise is also rejected with the same | |
| 40 | error. | |
| 41 | ||
| 42 | @param queue A queue to invoke the `work` block on. | |
| 43 | @param work A block to handle the value that receiver was fulfilled with. | |
| 44 | @return A new pending promise to be resolved with resolution returned from the `work` block. | |
| 45 | */ | |
| 46 | - (FBLPromise *)onQueue:(dispatch_queue_t)queue | |
| 47 | then:(FBLPromiseThenWorkBlock)work NS_REFINED_FOR_SWIFT; | |
| 48 | ||
| 49 | @end | |
| 50 | ||
| 51 | /** | |
| 52 | Convenience dot-syntax wrappers for `FBLPromise` `then` operators. | |
| 53 | Usage: promise.then(^id(id value) { ... }) | |
| 54 | */ | |
| 55 | @interface FBLPromise<Value>(DotSyntax_ThenAdditions) | |
| 56 | ||
| 57 | - (FBLPromise* (^)(FBLPromiseThenWorkBlock))then FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE(""); | |
| 58 | - (FBLPromise* (^)(dispatch_queue_t, FBLPromiseThenWorkBlock))thenOn FBL_PROMISES_DOT_SYNTAX | |
| 59 | NS_SWIFT_UNAVAILABLE(""); | |
| 60 | ||
| 61 | @end | |
| 62 | ||
| 63 | NS_ASSUME_NONNULL_END | |
