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coroutine_accessors.swift
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// RUN: %target-typecheck-verify-swift \
// RUN: -verify-additional-prefix enabled- \
// RUN: -enable-experimental-feature CoroutineAccessors \
// RUN: -debug-diagnostic-names
// RUN: %target-typecheck-verify-swift \
// RUN: -verify-additional-prefix disabled- \
// RUN: -debug-diagnostic-names
// REQUIRES: swift_feature_CoroutineAccessors
var_i:Int=0
// Order of accessor kinds:
// readers:
// - get
// - unsafeAddress
// - _read
// - read
// writers:
// - set
// - unsafeMutableAddress
// - _modify
// - modify
// =============================================================================
// Two reads
// =============================================================================
// enabled: conflicting accessors
// disabled: implicit getter.
varir_r:Int{
read{ // expected-disabled-error{{cannot_find_in_scope}}
// expected-enabled-error@-1{{variable cannot provide both a 'read' accessor and a '_read' accessor}}
fatalError()
}
_read{ // expected-disabled-error{{cannot_find_in_scope}}
// expected-enabled-note@-1{{previous_accessor}}
fatalError()
}
}
// enabled: conflicting accessors
varigr:Int{
get{
1
}
read{ // expected-error{{variable cannot provide both a 'read' accessor and a getter}}
// expected-note@-4{{previous_accessor}}
// expected-disabled-error@-2{{'read' accessor is only valid when experimental feature coroutine accessors is enabled}}
yield _i
}
}
// =============================================================================
// One read, one write.
// =============================================================================
// enabled: ok
// disabled: bad keyword
varigm:Int{
get{
0
}
modify{ // expected-disabled-error{{'modify' accessor is only valid when experimental feature coroutine accessors is enabled}}
yield &_i
}
}
// enabled: ok
// disabled: implicit getter
varimg:Int{
modify{ // expected-disabled-error{{cannot_find_in_scope}}
fatalError()
}
get{ // expected-disabled-error{{cannot_find_in_scope}}
0
}
}
// enabled: ok
// disabled: bad keyword
variuam:Int{
unsafeAddress{
UnsafePointer<Int>(bitPattern:0x0)!
}
modify{ // expected-disabled-error{{'modify' accessor is only valid when experimental feature coroutine accessors is enabled}}
yield &_i
}
}
// enabled: ok
// disabled: bad keyword
varimua:Int{
modify{ // expected-disabled-error{{cannot_find_in_scope}}
fatalError()
}
unsafeAddress{ // expected-disabled-error{{cannot_find_in_scope}}
UnsafePointer<Int>(bitPattern:0x0)!
}
}
// enabled: ok
// disabled: bad keyword
vari_rm:Int{
_read{
yield _i
}
modify{ // expected-disabled-error{{'modify' accessor is only valid when experimental feature coroutine accessors is enabled}}
yield &_i
}
}
// enabled: ok
// disabled: implicit getter.
varim_r:Int{
modify{ // expected-disabled-error{{cannot_find_in_scope}}
fatalError()
}
_read{ // expected-disabled-error{{cannot_find_in_scope}}
fatalError()
}
}
// enabled: ok
// disabled: implicit getter
varirm:Int{
read{ // expected-disabled-error{{cannot_find_in_scope}}
fatalError()
}
modify{ // expected-disabled-error{{cannot_find_in_scope}}
fatalError()
}
}
// enabled: ok
// disabled: implicit getter.
varimr:Int{
modify{ // expected-disabled-error{{cannot_find_in_scope}}
fatalError()
}
read{ // expected-disabled-error{{cannot_find_in_scope}}
fatalError()
}
}
// enabled: ok
// disabled: implicit getter
varirs:Int{
read{ // expected-disabled-error{{cannot_find_in_scope}}
fatalError()
}
set{ // expected-disabled-error{{cannot_find_in_scope}}
}
}
// enabled: ok
// disabled: bad keyword
varisr:Int{
set{
}
read{ // expected-disabled-error{{'read' accessor is only valid when experimental feature coroutine accessors is enabled}}
fatalError()
}
}
// enabled: ok
// disabled: implicit getter.
variruma:Int{
read{ // expected-disabled-error{{cannot_find_in_scope}}
fatalError()
}
unsafeMutableAddress{ // expected-disabled-error{{cannot_find_in_scope}}
UnsafeMutablePointer<Int>(bitPattern:0x0)!
}
}
// enabled: ok
// disabled: implicit getter.
variumar:Int{
read{ // expected-disabled-error{{cannot_find_in_scope}}
fatalError()
}
unsafeMutableAddress{ // expected-disabled-error{{cannot_find_in_scope}}
UnsafeMutablePointer<Int>(bitPattern:0x0)!
}
}
// enabled: ok
// disabled: implicit getter
varir_m:Int{
read{ // expected-disabled-error{{cannot_find_in_scope}}
fatalError()
}
_modify{ // expected-disabled-error{{cannot_find_in_scope}}
fatalError()
}
}
// enabled: ok
// disabled: bad keyword
vari_mr:Int{
_modify{
fatalError()
}
read{ // expected-disabled-error{{'read' accessor is only valid when experimental feature coroutine accessors is enabled}}
fatalError()
}
}
// =============================================================================
// Multiple mutating only.
// =============================================================================
// enabled: need a reader.
// disabled: implicit getter.
varims:Int{
modify{ // expected-disabled-error{{cannot_find_in_scope}}
fatalError()
}
set{ // expected-enabled-error{{variable with a setter must also have a getter, addressor, or 'read' accessor}}
// expected-disabled-error@-1{{cannot_find_in_scope}}
}
}
// enabled: need a reader
// disabled: bad keyword
varism:Int{
set{ // expected-error{{variable with a setter must also have a getter, addressor, or 'read' accessor}}
fatalError()
}
modify{// expected-disabled-error{{'modify' accessor is only valid when experimental feature coroutine accessors is enabled}}
fatalError()
}
}
// enabled: need a reader.
// disabled: implicit getter.
varimuma:Int{
modify{ // expected-enabled-error{{variable with a 'modify' accessor must also have a getter, addressor, or 'read' accessor}}
// expected-disabled-error@-1{{cannot_find_in_scope}}
fatalError()
}
unsafeMutableAddress{ // expected-disabled-error{{cannot_find_in_scope}}
UnsafeMutablePointer<Int>(bitPattern:0x0)!
}
}
// enabled: need a reader
// disabled: bad keyword
variumam:Int{
unsafeMutableAddress{
fatalError()
}
modify{ // expected-error{{variable with a 'modify' accessor must also have a getter, addressor, or 'read' accessor}}
// expected-disabled-error@-1{{'modify' accessor is only valid when experimental feature coroutine accessors is enabled}}
fatalError()
}
}
// enabled: conflicting accessors. need a reader.
// disabled: implicit getter.
varim_m:Int{
modify{ // expected-disabled-error{{cannot_find_in_scope}}
// expected-enabled-error@-1{{variable cannot provide both a 'modify' accessor and a '_modify' accessor}}
fatalError()
}
_modify{ // expected-enabled-error{{variable with a '_modify' accessor must also have a getter, addressor, or 'read' accessor}}
// expected-disabled-error@-1{{cannot_find_in_scope}}
// expected-enabled-note@-2{{previous_accessor}}
fatalError()
}
}
// enabled: need a reader.
// disabled: implicit getter.
vari_mm:Int{
_modify{ // expected-enabled-error{{variable with a '_modify' accessor must also have a getter, addressor, or 'read' accessor}}
// expected-disabled-error@-1{{variable with a 'modify' accessor must also have a getter, addressor, or 'read' accessor}}
// expected-note@-2{{previous_accessor}}
fatalError()
}
modify{ // expected-disabled-error{{'modify' accessor is only valid when experimental feature coroutine accessors is enabled}}
// expected-error@-1{{variable cannot provide both a 'modify' accessor and a '_modify' accessor}}
fatalError()
}
}
// enabled: need a reader.
// disabled: implicit getter.
varimm:Int{
modify{ // expected-enabled-error{{variable with a 'modify' accessor must also have a getter, addressor, or 'read' accessor}}
// expected-disabled-error@-1{{cannot_find_in_scope}}
fatalError()
}
modify{ // expected-enabled-error{{variable already has a 'modify' accessor}}
// expected-enabled-note@-5{{previous_accessor}}
// expected-disabled-error@-2{{cannot_find_in_scope}}
fatalError()
}
}
// =============================================================================
// Multiple
// =============================================================================
// enabled: ok
// disabled: bad keyword
vari_rm_m:Int{
_read{
yield _i
}
modify{ // expected-disabled-error{{'modify' accessor is only valid when experimental feature coroutine accessors is enabled}}
// expected-error@-1{{variable cannot provide both a 'modify' accessor and a '_modify' accessor}}
yield &_i
}
_modify{ // expected-note{{previous_accessor}}
yield &_i
}
}
// enabled: ok
// disabled: implicit getter
varir_rm_m:Int{
read{ // expected-disabled-error{{cannot_find_in_scope}}
// expected-enabled-error@-1{{variable cannot provide both a 'read' accessor and a '_read' accessor}}
fatalError()
}
_read{ // expected-disabled-error{{cannot_find_in_scope}}
// expected-enabled-note@-1{{previous_accessor}}
fatalError()
}
modify{ // expected-disabled-error{{cannot_find_in_scope}}
// expected-enabled-error@-1{{variable cannot provide both a 'modify' accessor and a '_modify' accessor}}
fatalError()
}
_modify{ // expected-disabled-error{{cannot_find_in_scope}}
// expected-enabled-note@-1{{previous_accessor}}
fatalError()
}
}
// =============================================================================
// Protocol Requirements
// =============================================================================
protocolP{
vargoodP:Int{ read set} //expected-disabled-error{{property in protocol must have explicit { get } or { get set } specifier}}
//expected-disabled-error@-1{{expected get or set in a protocol property}}
varbadP:Int{ read modify } //expected-enabled-error{{expected get, read, or set in a protocol property}}
//expected-disabled-error@-1{{property in protocol must have explicit { get } or { get set } specifier}}
//expected-disabled-error@-2{{expected get or set in a protocol property}}
subscript(goodS goodS:Int)->Int{ read set } //expected-disabled-error{{expected get or set in a protocol property}}
subscript(badS badS:Int)->Int{ read modify } //expected-enabled-error{{expected get, read, or set in a protocol property}}
//expected-disabled-error@-1{{expected get or set in a protocol property}}
}
