// RUN: rm -rf %t && mkdir -p %t

// RUN: %gyb -DOPT_KIND=None %s -o %t/pointer_conversion.swift
// RUN: %line-directive %t/pointer_conversion.swift -- %target-swift-frontend -typecheck -verify %t/pointer_conversion.swift

// RUN: %gyb -DOPT_KIND=Optional %s -o %t/pointer_conversion_opt.swift
// RUN: %line-directive %t/pointer_conversion_opt.swift -- %target-swift-frontend -typecheck -verify %t/pointer_conversion_opt.swift

// RUN: %gyb -DOPT_KIND=ImplicitlyUnwrappedOptional %s -o %t/pointer_conversion_iuo.swift
// RUN: %line-directive %t/pointer_conversion_iuo.swift -- %target-swift-frontend -typecheck -verify %t/pointer_conversion_iuo.swift

// REQUIRES: objc_interop

%{
if OPT_KIND == 'Optional':
  suffix='?'
elif OPT_KIND == 'ImplicitlyUnwrappedOptional':
  suffix='!'
else:
  suffix=''
}%

class C {}
class D {}

func takesMutablePointer(_ x: UnsafeMutablePointer<Int>${suffix}) {}
func takesMutableVoidPointer(_ x: UnsafeMutableRawPointer${suffix}) {}
@discardableResult
func takesConstPointer(_ x: UnsafePointer<Int>${suffix}) -> Character { return "x" }
func takesConstVoidPointer(_ x: UnsafeRawPointer${suffix}) {}

func takesAutoreleasingPointer(_ x: AutoreleasingUnsafeMutablePointer<C>${suffix}) {}

func pointerArgumentsObjC(ap: AutoreleasingUnsafeMutablePointer<Int>,
                          afp: AutoreleasingUnsafeMutablePointer<Float>) {
  takesMutablePointer(ap) // expected-error{{cannot convert value of type 'AutoreleasingUnsafeMutablePointer<Int>' to expected argument type 'UnsafeMutablePointer<Int>${suffix}'}}
  takesMutableVoidPointer(ap) // expected-error{{cannot convert value of type 'AutoreleasingUnsafeMutablePointer<Int>' to expected argument type 'UnsafeMutableRawPointer${suffix}'}}
  takesConstPointer(ap)
  takesConstVoidPointer(ap)
  takesConstVoidPointer(afp)

  var x: UnsafeRawPointer
  x = ap // expected-error{{cannot assign value of type 'AutoreleasingUnsafeMutablePointer<Int>' to type 'UnsafeRawPointer'}}
  _ = x
}

func autoreleasingPointerArguments(p: UnsafeMutablePointer<Int>,
                                   cp: UnsafePointer<Int>,
                                   ap: AutoreleasingUnsafeMutablePointer<C>) {
  takesAutoreleasingPointer(nil)
% if not suffix:
  // expected-error@-2 {{nil is not compatible with expected argument type}}
% end

  takesAutoreleasingPointer(p) // expected-error{{cannot convert value of type 'UnsafeMutablePointer<Int>' to expected argument type 'AutoreleasingUnsafeMutablePointer<C>${suffix}'}}
  takesAutoreleasingPointer(cp) // expected-error{{cannot convert value of type 'UnsafePointer<Int>' to expected argument type 'AutoreleasingUnsafeMutablePointer<C>${suffix}'}}
  takesAutoreleasingPointer(ap)

  var c: C = C()
  takesAutoreleasingPointer(&c)
  takesAutoreleasingPointer(c) // expected-error{{cannot convert value of type 'C' to expected argument type 'AutoreleasingUnsafeMutablePointer<C>${suffix}'}}
  var d: D = D()
  takesAutoreleasingPointer(&d) // expected-error{{cannot convert value of type 'D' to expected argument type 'C'}}
  takesAutoreleasingPointer(d) // expected-error{{cannot convert value of type 'D' to expected argument type 'AutoreleasingUnsafeMutablePointer<C>${suffix}'}}
  var cc: [C] = [C(), C()]
  var dd: [D] = [D(), D()]
  takesAutoreleasingPointer(&cc) // expected-error{{cannot convert value of type '[C]' to expected argument type 'C'}}
  takesAutoreleasingPointer(&dd) // expected-error{{cannot convert value of type '[D]' to expected argument type 'C'}}

  let _: AutoreleasingUnsafeMutablePointer<C> = &c // expected-error{{cannot pass immutable value of type 'C' as inout argument}}
}