swift-mirror/stdlib/objc/Foundation/MixedStringNSStringOperations.swift.gyb

//===--- MixedStringNSStringOperations.swift.gyb --------------*- swift -*-===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//

//
// Mixed-type comparisons between String and NSString.
//

% for op in [ '==', '!=', '<', '<=', '>=', '>' ]:

@transparent
public func ${op} (lhs: String, rhs: NSString) -> Bool {
  // FIXME(performance): constructing a temporary string is extremely
  // wasteful and inefficient.
  return lhs ${op} (rhs as String)
}

@transparent
public func ${op} (lhs: NSString, rhs: String) -> Bool {
  // FIXME(performance): constructing a temporary string is extremely
  // wasteful and inefficient.
  return (lhs as String) ${op} rhs
}

% end

public func != (lhs: String, rhs: String) -> Bool {
  // FIXME(performance): constructing a temporary string is extremely
  // wasteful and inefficient.
  return !(lhs == rhs)
}

public func <= (lhs: String, rhs: String) -> Bool {
  // FIXME(performance): constructing a temporary string is extremely
  // wasteful and inefficient.
  return !(rhs < lhs)
}

public func >= (lhs: String, rhs: String) -> Bool {
  // FIXME(performance): constructing a temporary string is extremely
  // wasteful and inefficient.
  return !(lhs < rhs)
}

public func > (lhs: String, rhs: String) -> Bool {
  // FIXME(performance): constructing a temporary string is extremely
  // wasteful and inefficient.
  return rhs < lhs
}

// This overload is required to disambiguate homogeneous NSString/NSString
// comparisons in non-generic code.
@transparent
public func == (lhs: NSString, rhs: NSString) -> Bool {
  return lhs as NSObject == rhs as NSObject
}

// This overload is required to disambiguate homogeneous NSString/NSString
// comparisons in non-generic code.
@transparent
public func != (lhs: NSString, rhs: NSString) -> Bool {
  return !(lhs == rhs)
}