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da07ff577c
PrintAsClang is supposed to emit declarations in the same order regardless of the compiler’s internal state, but we have repeatedly found that our current criteria are inadequate, resulting in non-functionality-affecting changes to generated header content. Add a diagnostic that’s emitted when this happens soliciting a bug report. Since there *should* be no cases where the compiler fails to order declarations, this diagnostic is never actually emitted. Instead, we test this change by enabling `-verify` on nearly all PrintAsClang tests to make sure they are unaffected. This did demonstrate a missing criterion that only mattered in C++ mode: extensions that varied only in their generic signature were not sorted stably. Add a sort criterion for this.
148 lines
3.4 KiB
C++
148 lines
3.4 KiB
C++
// RUN: %empty-directory(%t)
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// RUN: split-file %s %t
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// RUN: %target-swift-frontend %t/use-optional.swift -module-name UseOptional -enable-experimental-cxx-interop -typecheck -verify -emit-clang-header-path %t/UseOptional.h
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// RUN: %target-interop-build-clangxx -fno-exceptions -std=gnu++20 -c %t/optional-execution.cpp -I %t -o %t/swift-stdlib-execution.o
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// RUN: %target-build-swift %t/use-optional.swift -o %t/swift-stdlib-execution -Xlinker %t/swift-stdlib-execution.o -module-name UseOptional -Xfrontend -entry-point-function-name -Xfrontend swiftMain
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// RUN: %target-codesign %t/swift-stdlib-execution
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// RUN: %target-run %t/swift-stdlib-execution | %FileCheck %s
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// REQUIRES: executable_test
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//--- use-optional.swift
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@_expose(Cxx)
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public struct SmallStruct {
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public let x: Int16
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}
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@_expose(Cxx)
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public enum RawEnum: Int16 {
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case first = 1
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case second = 3
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}
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@_expose(Cxx)
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public class Klass {
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public let x: Int16
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init(_ x: Int16) {
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self.x = x
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print("init-Klass")
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}
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deinit {
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print("deinit-Klass")
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}
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}
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@_expose(Cxx)
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public func createCIntOpt(_ val: CInt) -> Optional<CInt> {
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return val
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}
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@_expose(Cxx)
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public func takeCIntOpt(_ val: Optional<CInt>) {
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print(String(describing: val))
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}
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@_expose(Cxx)
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public func createSmallStructOpt(_ val: Int16) -> Optional<SmallStruct> {
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return SmallStruct(x: val)
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}
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@_expose(Cxx)
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public func takeSmallStructOpt(_ val: Optional<SmallStruct>) {
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print(String(describing: val))
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}
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@_expose(Cxx)
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public func createKlassOpt(_ val: Int16) -> Klass? {
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return Klass(val)
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}
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@_expose(Cxx)
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public func takeKlassOpt(_ val: Klass?) {
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print(String(describing: val))
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}
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@_expose(Cxx)
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public func resetOpt<T>(_ val: inout Optional<T>) {
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val = .none
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}
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//--- optional-execution.cpp
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#include <cassert>
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#include "UseOptional.h"
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int main() {
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using namespace swift;
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using namespace UseOptional;
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{
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auto val = createCIntOpt(2);
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takeCIntOpt(val);
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assert((bool)val);
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assert(val.isSome());
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assert(val.getUnsafelyUnwrapped() == 2);
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assert(val.get() == 2);
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resetOpt(val);
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assert(!(bool)val);
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assert(val.isNone());
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takeCIntOpt(val);
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}
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// CHECK: Optional(2)
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// CHECK-NEXT: nil
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{
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auto val = Optional<int>::some(-97);
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takeCIntOpt(val);
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assert((bool)val);
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assert(val.get() == -97);
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auto val2 = Optional<int>::none();
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assert(!(bool)val2);
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takeCIntOpt(val2);
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}
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// CHECK-NEXT: Optional(-97)
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// CHECK-NEXT: nil
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{
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auto val = createSmallStructOpt(0xFA);
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takeSmallStructOpt(val);
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assert((bool)val);
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assert(val.isSome());
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assert(val.getUnsafelyUnwrapped().getX() == 0xFA);
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assert(val.get().getX() == 0xFA);
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resetOpt(val);
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assert(!(bool)val);
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assert(val.isNone());
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takeSmallStructOpt(val);
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}
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// CHECK-NEXT: Optional(UseOptional.SmallStruct(x: 250))
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// CHECK-NEXT: nil
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{
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auto val = createKlassOpt(-256);
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takeKlassOpt(val);
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assert(val.isSome());
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auto ptr = val.getUnsafelyUnwrapped();
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assert(ptr.getX() == -256);
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resetOpt(val);
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assert(val.isNone());
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takeKlassOpt(val);
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}
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// CHECK-NEXT: init-Klass
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// CHECK-NEXT: Optional(UseOptional.Klass)
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// CHECK-NEXT: nil
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// CHECK-NEXT: deinit-Klass
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{
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auto val = RawEnum::init(1);
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assert(val.isSome());
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assert(val.getUnsafelyUnwrapped() == RawEnum::first);
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assert(val.getUnsafelyUnwrapped().getRawValue() == 1);
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auto val2 = RawEnum::init(2);
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assert(val2.isNone());
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}
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return 0;
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}
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