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/**
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Copyright 2018 Google Inc. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at:
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#import "FBLPromise.h"
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NS_ASSUME_NONNULL_BEGIN
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@interface FBLPromise<Value>(ValidateAdditions)
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typedef BOOL (^FBLPromiseValidateWorkBlock)(Value __nullable value) NS_SWIFT_UNAVAILABLE("");
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/**
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Validates a fulfilled value or rejects the value if it can not be validated.
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@param predicate An expression to validate.
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@return A new pending promise that gets either resolved with same resolution as the receiver or
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rejected with `FBLPromiseErrorCodeValidationFailure` error code in `FBLPromiseErrorDomain`.
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*/
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- (FBLPromise *)validate:(FBLPromiseValidateWorkBlock)predicate NS_SWIFT_UNAVAILABLE("");
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/**
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Validates a fulfilled value or rejects the value if it can not be validated.
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@param queue A queue to dispatch on.
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@param predicate An expression to validate.
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@return A new pending promise that gets either resolved with same resolution as the receiver or
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rejected with `FBLPromiseErrorCodeValidationFailure` error code in `FBLPromiseErrorDomain`.
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*/
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- (FBLPromise *)onQueue:(dispatch_queue_t)queue
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validate:(FBLPromiseValidateWorkBlock)predicate NS_REFINED_FOR_SWIFT;
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@end
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/**
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Convenience dot-syntax wrappers for `FBLPromise` `validate` operators.
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Usage: promise.validate(^BOOL(id value) { ... })
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*/
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@interface FBLPromise<Value>(DotSyntax_ValidateAdditions)
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- (FBLPromise * (^)(FBLPromiseValidateWorkBlock))validate FBL_PROMISES_DOT_SYNTAX
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NS_SWIFT_UNAVAILABLE("");
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- (FBLPromise * (^)(dispatch_queue_t, FBLPromiseValidateWorkBlock))validateOn
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FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
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@end
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NS_ASSUME_NONNULL_END
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