// REQUIRES: swift_swift_parser, executable_test

// RUN: %empty-directory(%t)
// RUN: %host-build-swift -swift-version 5 -emit-library -o %t/%target-library-name(MacroDefinition) -module-name=MacroDefinition %S/Inputs/syntax_macro_definitions.swift -g -no-toolchain-stdlib-rpath
// RUN: %target-swift-frontend -swift-version 5 -emit-module -o %t/ModuleWithEquatable.swiftmodule %s -DMODULE_EXPORTING_TYPE -module-name ModuleWithEquatable -load-plugin-library %t/%target-library-name(MacroDefinition) -emit-module-interface-path %t/ModuleWithEquatable.swiftinterface

// Check the generated .swiftinterface
// RUN: %FileCheck -check-prefix INTERFACE %s < %t/ModuleWithEquatable.swiftinterface

// RUN: %target-swift-frontend -swift-version 5 -typecheck -load-plugin-library %t/%target-library-name(MacroDefinition) %s -I %t -disable-availability-checking -dump-macro-expansions > %t/expansions-dump.txt 2>&1
// RUN: %FileCheck -check-prefix=CHECK-DUMP %s < %t/expansions-dump.txt
// RUN: %target-typecheck-verify-swift -swift-version 5 -load-plugin-library %t/%target-library-name(MacroDefinition) -module-name MacroUser -DTEST_DIAGNOSTICS -swift-version 5 -I %t
// RUN: %target-build-swift -swift-version 5 -load-plugin-library %t/%target-library-name(MacroDefinition) %s -o %t/main -module-name MacroUser -swift-version 5 -emit-tbd -emit-tbd-path %t/MacroUser.tbd -I %t
// RUN: %target-codesign %t/main
// RUN: %target-run %t/main | %FileCheck %s

#if TEST_DIAGNOSTICS
@attached(conformance) // expected-error{{conformance macros are replaced by extension macros}}
macro InvalidEquatable() = #externalMacro(module: "MacroDefinition", type: "EquatableMacro")
#endif

@attached(extension, conformances: Equatable)
macro Equatable() = #externalMacro(module: "MacroDefinition", type: "EquatableMacro")

@attached(extension, conformances: Hashable)
macro Hashable() = #externalMacro(module: "MacroDefinition", type: "HashableMacro")

#if MODULE_EXPORTING_TYPE
@Equatable
public struct PublicEquatable {
  public init() { }
}

// INTERFACE-NOT: @Equatable
// INTERFACE: public struct PublicEquatable
// INTERFACE: extension ModuleWithEquatable.PublicEquatable : Swift.Equatable

#else
import ModuleWithEquatable

func requireEquatable(_ value: some Equatable) {
  print(value == value)
}

// expected-note@+1{{where 'some Hashable' = 'PublicEquatable'}}
func requireHashable(_ value: some Hashable) {
  print(value.hashValue)
}

@Equatable
struct S {}

@Hashable
struct S2 {}

enum E {
  @Equatable struct Nested {}
}

// CHECK-DUMP: @__swiftmacro_25macro_expand_conformances1S9EquatablefMe_.swift
// CHECK-DUMP: extension S: Equatable  {
// CHECK-DUMP: }

// CHECK: true
requireEquatable(S())

requireEquatable(S2())
requireHashable(S2())

requireEquatable(E.Nested())

extension E {
  @Equatable struct NestedInExtension {}
}

requireEquatable(E.NestedInExtension())

#if TEST_DIAGNOSTICS
requireEquatable(PublicEquatable())

requireHashable(PublicEquatable())
//expected-error@-1{{global function 'requireHashable' requires that 'PublicEquatable' conform to 'Hashable'}}
#endif

@attached(extension, conformances: P)
@attached(member, names: named(requirement))
macro DelegatedConformance() = #externalMacro(module: "MacroDefinition", type: "DelegatedConformanceMacro")

protocol P {
  static func requirement()
}

struct Wrapped: P {
  static func requirement() {
    print("Wrapped.requirement")
  }
}

@DelegatedConformance
struct Generic<Element> {}

// CHECK-DUMP: @__swiftmacro_25macro_expand_conformances7Generic20DelegatedConformancefMe_.swift
// CHECK-DUMP: extension Generic: P where Element: P {
// CHECK-DUMP: }

func requiresP(_ value: (some P).Type) {
  value.requirement()
}

// CHECK: Wrapped.requirement
requiresP(Generic<Wrapped>.self)
#endif