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2b5ada11cb
In particular, this fixes the size calculation for nested enums,
specifically enums within Optionals. Without this, the
reflection library computes `v` below as requiring two bytes
instead of one.
```
enum E {
case a
case b
}
let v = Optional<E>
```
This also adds a number of test cases for enums alone and
wrapped in optionals, including:
* Zero-case enums are allocated zero size and have zero extra inhabitants
* Zero-case enums in optionals also get zero size
* One-case no-payload enums are allocated zero size and have zero extra inhabitants
* One-case no-payload enums in optionals get one byte allocated and have zero extra inhabitants
* 254-case enums have only two extra inhabitants, so putting them in thrice-nested optionals requires an extra byte
* Various cases where each nested optional gets an extra byte
Resolves rdar://31154770
82 lines
3.7 KiB
Swift
82 lines
3.7 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-build-swift -g -lswiftSwiftReflectionTest %s -o %t/reflect_Enum_SingleCasePointerPayload
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// RUN: %target-codesign %t/reflect_Enum_SingleCasePointerPayload
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// RUN: %target-run %target-swift-reflection-test %t/reflect_Enum_SingleCasePointerPayload | %FileCheck %s --check-prefix=CHECK-%target-ptrsize
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// REQUIRES: objc_interop
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// REQUIRES: executable_test
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import SwiftReflectionTest
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class Marker {
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let value = 1
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}
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enum SingleCasePointerPayloadEnum {
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case only(Marker)
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}
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class ClassWithSingleCasePointerPayloadEnum {
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var e1: SingleCasePointerPayloadEnum?
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var e2: SingleCasePointerPayloadEnum = .only(Marker())
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var e3: SingleCasePointerPayloadEnum? = .some(.only(Marker()))
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var e4: SingleCasePointerPayloadEnum??
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}
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reflect(object: ClassWithSingleCasePointerPayloadEnum())
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// CHECK-64: Reflecting an object.
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// CHECK-64: Instance pointer in child address space: 0x{{[0-9a-fA-F]+}}
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// CHECK-64: Type reference:
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// CHECK-64: (class reflect_Enum_SingleCasePointerPayload.ClassWithSingleCasePointerPayloadEnum)
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// CHECK-64: Type info:
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// CHECK-64: (class_instance size=48 alignment=8 stride=48 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64: (field name=e1 offset=16
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// CHECK-64: (single_payload_enum size=8 alignment=8 stride=8 num_extra_inhabitants=2147483646 bitwise_takable=1
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// CHECK-64: (field name=some offset=0
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// CHECK-64: (reference kind=strong refcounting=native))))
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// CHECK-64: (field name=e2 offset=24
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// CHECK-64: (reference kind=strong refcounting=native))
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// CHECK-64: (field name=e3 offset=32
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// CHECK-64: (single_payload_enum size=8 alignment=8 stride=8 num_extra_inhabitants=2147483646 bitwise_takable=1
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// CHECK-64: (field name=some offset=0
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// CHECK-64: (reference kind=strong refcounting=native))))
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// CHECK-64: (field name=e4 offset=40
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// CHECK-64: (single_payload_enum size=8 alignment=8 stride=8 num_extra_inhabitants=2147483645 bitwise_takable=1
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// CHECK-64: (field name=some offset=0
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// CHECK-64: (single_payload_enum size=8 alignment=8 stride=8 num_extra_inhabitants=2147483646 bitwise_takable=1
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// CHECK-64: (field name=some offset=0
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// CHECK-64: (reference kind=strong refcounting=native)))))))
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// CHECK-32: Reflecting an object.
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// CHECK-32: Instance pointer in child address space: 0x{{[0-9a-fA-F]+}}
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// CHECK-32: Type reference:
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// CHECK-32: (class reflect_Enum_SingleCasePointerPayload.ClassWithSingleCasePointerPayloadEnum)
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// CHECK-32: Type info:
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// CHECK-32: (class_instance size=24 alignment=4 stride=24 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32: (field name=e1 offset=8
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// CHECK-32: (single_payload_enum size=4 alignment=4 stride=4 num_extra_inhabitants=4095 bitwise_takable=1
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// CHECK-32: (field name=some offset=0
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// CHECK-32: (reference kind=strong refcounting=native))))
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// CHECK-32: (field name=e2 offset=12
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// CHECK-32: (reference kind=strong refcounting=native))
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// CHECK-32: (field name=e3 offset=16
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// CHECK-32: (single_payload_enum size=4 alignment=4 stride=4 num_extra_inhabitants=4095 bitwise_takable=1
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// CHECK-32: (field name=some offset=0
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// CHECK-32: (reference kind=strong refcounting=native))))
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// CHECK-32: (field name=e4 offset=20
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// CHECK-32: (single_payload_enum size=4 alignment=4 stride=4 num_extra_inhabitants=4094 bitwise_takable=1
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// CHECK-32: (field name=some offset=0
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// CHECK-32: (single_payload_enum size=4 alignment=4 stride=4 num_extra_inhabitants=4095 bitwise_takable=1
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// CHECK-32: (field name=some offset=0
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// CHECK-32: (reference kind=strong refcounting=native)))))))
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doneReflecting()
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// CHECK-64: Done.
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// CHECK-32: Done.
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