//===--- FlatMapDiagnostics.swift -----------------------------*- swift -*-===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
// RUN: rm -rf %t && mkdir -p %t
// RUN: %gyb %s -o %t/FlatMapDiagnostics.swift
// RUN: %target-swift-frontend -typecheck -verify %t/FlatMapDiagnostics.swift


% for Type in [
%   'Sequence',
%   'Collection',
%   'LazySequenceProtocol',
%   'LazyCollectionProtocol']:

func testGeneric${Type}<T : ${Type}>(xs: T) {
  _ = xs.flatMap { $0 } // expected-warning {{Please use map instead.}}
}

% end

func testArray(xs: [Int]) {
 _ = xs.flatMap { $0 } // expected-warning {{Please use map instead.}}
 _ = xs.lazy.flatMap { $0 } // expected-warning {{Please use map instead.}}
}

func testGenericLazyBidirectionalCollection<
  T : LazyCollectionProtocol & BidirectionalCollection
>(xs: T) where T.Elements : BidirectionalCollection {
  _ = xs.flatMap { $0 } // expected-warning {{Please use map instead.}}
}