Unless I'm greatly misunderstanding things, this won't enter the language until after at least December, probably more like February or March of 2017, as it is purely additive.
You can see the proposals marked for "post 3.0" in the Github pull requests list. -- E > On Jun 29, 2016, at 12:55 AM, Jacob Bandes-Storch <[email protected]> wrote: > > +1 on getting this proposal reviewed soon; I ran into the lack of > TARGET_OS_SIMULATOR today (and was about to send an email, before I > searched a little harder and found this). > > On Thu, Jun 16, 2016 at 9:49 AM, Erica Sadun via swift-evolution < > [email protected]> wrote: > >> This is an omnibus conditional compilation block proposal. It is built out >> of Swift Evolution community requests and discussions dating back on >> various threads to the genesis of the list. >> >> >> - This draft does not include tests for debug conditions. That was >> pitched under separate cover using runtime functions instead of conditional >> compilation blocks. >> - This draft does not include tests for OS versions, as that seems to >> be better addressed using the existing availability tests. >> - This draft is rewritten with respect to Jordan Rose's "Rename "build >> configurations" to "conditional compilation blocks"" swift commit >> >> <https://github.com/apple/swift/commit/6272941c5cba9581a5ee93d92a6ee66e28c1bf13> >> from >> 12 February (rdar://problem/19812930). >> - It is offered as an omnibus because all the tests fall under the >> same "conditional compilation block" umbrella. Using an omnibus reduces >> list traffic and demands on core team resources. It's understood that the >> proposal is likely to be accepted with modifications (or rejected as a >> whole) due to the multiple tests. >> >> >> -- Erica >> >> gist: https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298 >> >> Enhancing the Platform Configuration Test Suite for Conditional >> Compilation Blocks >> >> - Proposal: TBD >> - Author: Erica Sadun <http://github.com/erica> >> - Status: TBD >> - Review manager: TBD >> >> >> <https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#introduction> >> Introduction >> >> This proposal introduces additional configuration tests to differentiate >> platform conditions in conditional compilation blocks. >> >> This proposal was first discussed on-list in the [Draft] Introducing >> Build Configuration Tests for Platform Conditions >> <http://thread.gmane.org/gmane.comp.lang.swift.evolution/12140/focus=12267> >> thread >> and then re-pitched in TBD <https://gist.github.com/erica/TBD>. >> <https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#note>Note >> >> The term "build configuration" is subsumed by "conditional compilation >> block". See this accepted patch >> <https://github.com/apple/swift/commit/6272941c5cba9581a5ee93d92a6ee66e28c1bf13> >> <https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#motivation> >> Motivation >> >> Testing for platform conditions is a typical developer task. Although some >> built-in features like CFByteOrderGetCurrentexist, it seems a natural >> match for Swift to introduce conditional compilation blocks specific to >> common platform conditions. >> >> <https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#current-art>Current >> Art >> >> Swift currently supports the following platform configuration tests, >> defined in lib/Basic/LangOptions.cpp. >> >> - The literals true and false >> - The os() function that tests for OSX, iOS, watchOS, tvOS, Linux, >> Windows, Android, and FreeBSD >> - The arch() function that tests for x86_64, arm, arm64, i386, >> powerpc64, s390x, and powerpc64le >> - The swift() function that tests for specific Swift language >> releases, e.g. swift(>=2.2) >> >> The following platform configuration test has been accepted in SE-0075 >> <https://github.com/apple/swift-evolution/blob/master/proposals/0075-import-test.md> >> but >> not yet implemented: >> >> - The canImport() function that tests whether specific modules can be >> imported. >> >> >> <https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#detailed-design>Detailed >> Design >> >> This proposal introduces several platform condition tests for use in >> conditional compilation blocks: endianness, bitwidth, vendor, objc interop, >> and simulator. >> <https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#endianness> >> Endianness >> >> Endianness refers to the byte order used in memory. This proposal exposes >> endian test conditions, promoting them from private underscored names to >> public developer-referencable ones. >> >> // Set the "_endian" platform condition. >> switch (Target.getArch()) { >> case llvm::Triple::ArchType::arm: >> case llvm::Triple::ArchType::thumb: >> addPlatformConditionValue("_endian", "little"); >> break; >> case llvm::Triple::ArchType::aarch64: >> addPlatformConditionValue("_endian", "little"); >> break; >> case llvm::Triple::ArchType::ppc64: >> addPlatformConditionValue("_endian", "big"); >> break; >> case llvm::Triple::ArchType::ppc64le: >> addPlatformConditionValue("_endian", "little"); >> break; >> case llvm::Triple::ArchType::x86: >> addPlatformConditionValue("_endian", "little"); >> break; >> case llvm::Triple::ArchType::x86_64: >> addPlatformConditionValue("_endian", "little"); >> break; >> case llvm::Triple::ArchType::systemz: >> addPlatformConditionValue("_endian", "big"); >> break; >> default: >> llvm_unreachable("undefined architecture endianness"); >> >> Under this proposal _endian is renamed to endian and made a public API. >> >> Use: >> >> #if endian(big) >> // Big endian code >> #endif >> >> <https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#bitwidth> >> Bitwidth >> >> Bitwidth describes the number of bits used to represent a number. This >> proposal introduces a bitwidth test with two options: 32 and 64. >> >> Use: >> >> #if bitwidth(64) >> // 64-bit code >> #endif >> >> List members briefly discussed whether it was better to measure pointer >> width or the size of Int. William Dillon suggested renaming bitwidth to >> either intwidth or intsize. Brent Royal-Gordon suggests intbits. >> Alternatives include bitsand bitsize. This proposal avoids wordbits because >> of the way, for example, Intel ends up doing “dword”, “qword”, and so forth >> for backwards compatibility. >> <https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#vendor> >> Vendor >> >> A vendor describes the corporate or other originator of a platform. This >> proposal introduces a test that returns platform vendor, with one option at >> this time: Apple. Apple deployment provides an umbrella case for wide >> range of coding norms that may not be available on non-Apple platforms. >> This "family of targets" provides a simpler test than looking for specific >> modules or listing individual operating systems, both of which provide >> fragile approaches to this requirement. >> >> This call would be supported in Swift's source-code by the existing >> private getVendor() used in lib/Basic/LangOptions.cpp. >> >> Use: >> >> #if vendor(Apple) >> // Code specific to Apple platform deployment >> #endif >> >> <https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#interop> >> Interop >> >> Swift's Objective-C compatibility enables developers to build >> mix-and-match projects with a mixed-language codebase. This proposal >> introduces a test to determine whether the Objective-C runtime is available >> for use. This test uses only one option, objc, although it could >> potentially expand to other scenarios, such as jvm, clr, and C++. >> >> if (EnableObjCInterop) >> addPlatformConditionValue("_runtime", "_ObjC");else >> addPlatformConditionValue("_runtime", "_Native") >> >> Use: >> >> #if interop(objc) >> // Code that depends on Objective-C >> #endif >> >> >> <https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#simulator-conditions>Simulator >> Conditions >> >> Xcode simulators enable developers to test code on a wide range of >> platforms without directly using physical devices. A simulator may not >> offer the full suite of modules available with device deployment or provide >> device-only hardware hooks like GPS. This proposal introduces a test for >> simulator platform conditions, enabling developers to omit references to >> unsupported features. It offers two options: simulator and device. >> >> bool swift::tripleIsAnySimulator(const llvm::Triple &triple) { >> return tripleIsiOSSimulator(triple) || >> tripleIsWatchSimulator(triple) || >> tripleIsAppleTVSimulator(triple); >> } >> >> This proposal uses a targetEnvironment test as target or platform are too >> valuable burn on this test. >> >> Use: >> >> #if targetEnvironment(simulator) >> // Code specific to simulator use >> #endif >> >> This condition test would reduce the fragility and special casing >> currently in use: >> >> #if (arch(i386) || arch(x86_64)) && os(iOS) >> print("Probably simulator") >> #endif >> >> >> <https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#impact-on-existing-code>Impact >> on Existing Code >> >> This proposal is additive and should not affect existing code. Some >> developers may refactor code as in the case of the simulator/device test. >> >> <https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#alternatives-considered>Alternatives >> Considered >> Not accepting this proposal >> >> _______________________________________________ >> swift-evolution mailing list >> [email protected] >> https://lists.swift.org/mailman/listinfo/swift-evolution >> >> > > --94eb2c06f27acab4dd0536653f4f > Content-Type: text/html; charset=UTF-8 > Content-Transfer-Encoding: quoted-printable > > <div dir="ltr">+1 on getting this proposal reviewed soon; I ran into the lack > of TARGET_OS_SIMULATOR today (and was about to send an email, before I > searched a little harder and found this).<div class="gmail_extra"> > <br><div class="gmail_quote">On Thu, Jun 16, 2016 at 9:49 AM, Erica Sadun via > swift-evolution <span dir="ltr"><<a > href="mailto:[email protected]"; > target="_blank">[email protected]</a>></span> > wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 > .8ex;border-left:1px #ccc solid;padding-left:1ex"><div > style="word-wrap:break-word"><div>This is an omnibus conditional compilation > block proposal. It is built out of Swift Evolution community requests and > discussions dating back on various threads to the genesis of the list. > </div><div><br></div><div><ul><li>This draft does not include tests for debug > conditions. That was pitched under separate cover using runtime functions > instead of conditional compilation blocks.</li><li>This draft does not > include tests for OS versions, as that seems to be better addressed using the > existing availability tests.</li><li>This draft is rewritten with respect to > Jordan Rose's "Rename "build configurations" to > "conditional compilation blocks"" <a > href="https://github.com/apple/swift/commit/6272941c5cba9581a5ee93d92a6ee66e28c1bf13"; > target="_blank">swift commit</a> from 12 February > (<a>rdar://problem/19812930</a>). </li><li>It is offered as an omnibus > because all the tests fall under the same "conditional compilation > block" umbrella. Using an omnibus reduces list traffic and demands on > core team resources. It's understood that the proposal is likely to be > accepted with modifications (or rejected as a whole) due to the multiple > tests. </li></ul></div><div><br></div><div>-- > Erica</div><div><br></div><div><div>gist: <a > href="https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298"; > target="_blank">https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298</a></div></div><div><br></div><div><h1 > > style="font-size:2.25em;margin-right:0px;margin-bottom:16px;margin-left:0px;line-height:1.2;padding-bottom:0.3em;border-bottom-width:1px;border-bottom-style:solid;border-bottom-color:rgb(238,238,238);color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';background-color:rgb(255,255,255);margin-top:0px!important">Enhancing > the Platform Configuration Test Suite for Conditional Compilation > Blocks</h1><ul > style="padding-left:2em;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)"><li>Proposal: > TBD</li><li>Author: <a href="http://github.com/erica"; > style="background-color:transparent;color:rgb(64,120,192);text-decoration:none" > target="_blank">Erica Sadun</a></li><li>Status: TBD</li><li>Review manager: > TBD</li></ul><h2 > style="margin-top:1em;margin-bottom:16px;line-height:1.225;font-size:1.75em;padding-bottom:0.3em;border-bottom-width:1px;border-bottom-style:solid;border-bottom-color:rgb(238,238,238);color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';background-color:rgb(255,255,255)"><a > href="https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#introduction"; > > style="background-color:transparent;color:rgb(64,120,192);text-decoration:none;display:inline-block;padding-right:2px;line-height:1" > target="_blank"><u></u><u></u><u></u><u></u></a>Introduction</h2><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">This proposal > introduces additional configuration tests to differentiate platform > conditions in conditional compilation blocks.</p><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">This proposal > was first discussed on-list in the <a > href="http://thread.gmane.org/gmane.comp.lang.swift.evolution/12140/focus=12267"; > > style="background-color:transparent;color:rgb(64,120,192);text-decoration:none" > target="_blank">[Draft] Introducing Build Configuration Tests for Platform > Conditions</a> thread and then re-pitched in <a > href="https://gist.github.com/erica/TBD"; > style="background-color:transparent;color:rgb(64,120,192);text-decoration:none" > target="_blank">TBD</a>.</p><h2 > style="margin-top:1em;margin-bottom:16px;line-height:1.225;font-size:1.75em;padding-bottom:0.3em;border-bottom-width:1px;border-bottom-style:solid;border-bottom-color:rgb(238,238,238);color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';background-color:rgb(255,255,255)"><a > href="https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#note"; > style="background-color:transparent;color:rgb(64,120,192);text-decoration:none;display:inline-block;padding-right:2px;line-height:1" > target="_blank"><u></u><u></u><u></u><u></u></a>Note</h2><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">The term > "build configuration" is subsumed by "conditional compilation > block". See <a > href="https://github.com/apple/swift/commit/6272941c5cba9581a5ee93d92a6ee66e28c1bf13"; > > style="background-color:transparent;color:rgb(64,120,192);text-decoration:none" > target="_blank">this accepted patch</a></p><h2 > style="margin-top:1em;margin-bottom:16px;line-height:1.225;font-size:1.75em;padding-bottom:0.3em;border-bottom-width:1px;border-bottom-style:solid;border-bottom-color:rgb(238,238,238);color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';background-color:rgb(255,255,255)"><a > href="https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#motivation"; > > style="background-color:transparent;color:rgb(64,120,192);text-decoration:none;display:inline-block;padding-right:2px;line-height:1" > target="_blank"><u></u><u></u><u></u><u></u></a>Motivation</h2><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">Testing for > platform conditions is a typical developer task. Although some built-in > features like <code style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">CFByteOrderGetCurrent</code>exist, > it seems a natural match for Swift to introduce conditional compilation > blocks specific to common platform conditions.</p><h2 > style="margin-top:1em;margin-bottom:16px;line-height:1.225;font-size:1.75em;padding-bottom:0.3em;border-bottom-width:1px;border-bottom-style:solid;border-bottom-color:rgb(238,238,238);color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';background-color:rgb(255,255,255)"><a > href="https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#current-art"; > > style="background-color:transparent;color:rgb(64,120,192);text-decoration:none;display:inline-block;padding-right:2px;line-height:1" > target="_blank"><u></u><u></u><u></u><u></u></a>Current Art</h2><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">Swift currently > supports the following platform configuration tests, defined in > lib/Basic/LangOptions.cpp.</p><ul > style="padding-left:2em;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)"><li>The > literals <code style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">true</code> > and <code style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">false</code></li><li>The > <code style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">os()</code> > function that tests for <code style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">OSX, > iOS, watchOS, tvOS, Linux, Windows, Android, and FreeBSD</code></li><li>The > <code style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">arch()</code> > function that tests for <code style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">x86_64, > arm, arm64, i386, powerpc64, s390x, and powerpc64le</code></li><li>The <code > style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">swift()</code> > function that tests for specific Swift language releases, e.g. <code > style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">swift(>=2.2)</code></li></ul><p > > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">The following > platform configuration test has been accepted in <a > href="https://github.com/apple/swift-evolution/blob/master/proposals/0075-import-test.md"; > > style="background-color:transparent;color:rgb(64,120,192);text-decoration:none" > target="_blank">SE-0075</a> but not yet implemented:</p><ul > style="padding-left:2em;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)"><li>The <code > style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">canImport()</code> > function that tests whether specific modules can be imported.</li></ul><h2 > style="margin-top:1em;margin-bottom:16px;line-height:1.225;font-size:1.75em;padding-bottom:0.3em;border-bottom-width:1px;border-bottom-style:solid;border-bottom-color:rgb(238,238,238);color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';background-color:rgb(255,255,255)"><a > href="https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#detailed-design"; > > style="background-color:transparent;color:rgb(64,120,192);text-decoration:none;display:inline-block;padding-right:2px;line-height:1" > target="_blank"><u></u><u></u><u></u><u></u></a>Detailed Design</h2><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">This proposal > introduces several platform condition tests for use in conditional > compilation blocks: endianness, bitwidth, vendor, objc interop, and > simulator.</p><h3 > style="margin-top:1em;margin-bottom:16px;line-height:1.43;font-size:1.5em;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';background-color:rgb(255,255,255)"><a > href="https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#endianness"; > > style="background-color:transparent;color:rgb(64,120,192);text-decoration:none;display:inline-block;padding-right:2px;line-height:1.2" > target="_blank"><u></u><u></u><u></u><u></u></a>Endianness</h3><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">Endianness > refers to the byte order used in memory. This proposal exposes endian test > conditions, promoting them from private underscored names to public > developer-referencable ones.</p><div > style="margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)"><pre > style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;margin-top:0px;margin-bottom:0px;line-height:1.45;word-wrap:normal;padding:16px;overflow:auto;background-color:rgb(247,247,247);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-break:normal"><span > style="color:rgb(150,152,150)">// Set the "_endian" platform > condition.</span> > <span style="color:rgb(167,29,93)">switch</span> (Target<span > style="color:rgb(167,29,93)">.</span>getArch()) { > <span style="color:rgb(167,29,93)">case</span> llvm::Triple::ArchType::arm: > <span style="color:rgb(167,29,93)">case</span> llvm::Triple::ArchType::thumb: > addPlatformConditionValue(<span > style="color:rgb(24,54,145)"><span>"</span>_endian<span>"</span></span>, > <span > style="color:rgb(24,54,145)"><span>"</span>little<span>"</span></span>); > <span style="color:rgb(167,29,93)">break</span>; > <span style="color:rgb(167,29,93)">case</span> > llvm::Triple::ArchType::aarch64: > addPlatformConditionValue(<span > style="color:rgb(24,54,145)"><span>"</span>_endian<span>"</span></span>, > <span > style="color:rgb(24,54,145)"><span>"</span>little<span>"</span></span>); > <span style="color:rgb(167,29,93)">break</span>; > <span style="color:rgb(167,29,93)">case</span> llvm::Triple::ArchType::ppc64: > addPlatformConditionValue(<span > style="color:rgb(24,54,145)"><span>"</span>_endian<span>"</span></span>, > <span > style="color:rgb(24,54,145)"><span>"</span>big<span>"</span></span>); > <span style="color:rgb(167,29,93)">break</span>; > <span style="color:rgb(167,29,93)">case</span> > llvm::Triple::ArchType::ppc64le: > addPlatformConditionValue(<span > style="color:rgb(24,54,145)"><span>"</span>_endian<span>"</span></span>, > <span > style="color:rgb(24,54,145)"><span>"</span>little<span>"</span></span>); > <span style="color:rgb(167,29,93)">break</span>; > <span style="color:rgb(167,29,93)">case</span> llvm::Triple::ArchType::x86: > addPlatformConditionValue(<span > style="color:rgb(24,54,145)"><span>"</span>_endian<span>"</span></span>, > <span > style="color:rgb(24,54,145)"><span>"</span>little<span>"</span></span>); > <span style="color:rgb(167,29,93)">break</span>; > <span style="color:rgb(167,29,93)">case</span> > llvm::Triple::ArchType::x86_64: > addPlatformConditionValue(<span > style="color:rgb(24,54,145)"><span>"</span>_endian<span>"</span></span>, > <span > style="color:rgb(24,54,145)"><span>"</span>little<span>"</span></span>); > <span style="color:rgb(167,29,93)">break</span>; > <span style="color:rgb(167,29,93)">case</span> > llvm::Triple::ArchType::systemz: > addPlatformConditionValue(<span > style="color:rgb(24,54,145)"><span>"</span>_endian<span>"</span></span>, > <span > style="color:rgb(24,54,145)"><span>"</span>big<span>"</span></span>); > <span style="color:rgb(167,29,93)">break</span>; > <span style="color:rgb(167,29,93)">default</span>: > llvm_unreachable(<span > style="color:rgb(24,54,145)"><span>"</span>undefined architecture > endianness<span>"</span></span>);</pre></div><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">Under this > proposal <code style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">_endian</code> > is renamed to <code style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">endian</code> > and made a public API.</p><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">Use:</p><div > style="margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)"><pre > style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;margin-top:0px;margin-bottom:0px;line-height:1.45;word-wrap:normal;padding:16px;overflow:auto;background-color:rgb(247,247,247);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-break:normal">#<span > style="color:rgb(167,29,93)">if</span> endian(big) > <span style="color:rgb(150,152,150)">// Big endian code</span> > #endif</pre></div><h3 > style="margin-top:1em;margin-bottom:16px;line-height:1.43;font-size:1.5em;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';background-color:rgb(255,255,255)"><a > href="https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#bitwidth"; > > style="background-color:transparent;color:rgb(64,120,192);text-decoration:none;display:inline-block;padding-right:2px;line-height:1.2" > target="_blank"><u></u><u></u><u></u><u></u></a>Bitwidth</h3><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">Bitwidth > describes the number of bits used to represent a number. This proposal > introduces a bitwidth test with two options: 32 and 64. </p><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">Use:</p><div > style="margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)"><pre > style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;margin-top:0px;margin-bottom:0px;line-height:1.45;word-wrap:normal;padding:16px;overflow:auto;background-color:rgb(247,247,247);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-break:normal">#<span > style="color:rgb(167,29,93)">if</span> bitwidth(<span > style="color:rgb(0,134,179)">64</span>) > <span style="color:rgb(150,152,150)">// 64-bit code</span> > #endif</pre></div><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">List members > briefly discussed whether it was better to measure pointer width or the size > of Int. William Dillon suggested renaming bitwidth to either <code > style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">intwidth</code> > or <code style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">intsize</code>. > Brent Royal-Gordon suggests <code > style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">intbits</code>. > Alternatives include <code style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">bits</code>and > <code style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">bitsize</code>. > This proposal avoids <code style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">wordbits</code> > because of the way, for example, Intel ends up doing “dword”, “qword”, and > so forth for backwards compatibility.</p><h3 > style="margin-top:1em;margin-bottom:16px;line-height:1.43;font-size:1.5em;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';background-color:rgb(255,255,255)"><a > href="https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#vendor"; > style="background-color:transparent;color:rgb(64,120,192);text-decoration:none;display:inline-block;padding-right:2px;line-height:1.2" > target="_blank"><u></u><u></u><u></u><u></u></a>Vendor</h3><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">A vendor > describes the corporate or other originator of a platform. This proposal > introduces a test that returns platform vendor, with one option at this time: > <code style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">Apple</code>. > Apple deployment provides an umbrella case for wide range of coding norms > that may not be available on non-Apple platforms. This "family of > targets" provides a simpler test than looking for specific modules or > listing individual operating systems, both of which provide fragile > approaches to this requirement.</p><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">This call would > be supported in Swift's source-code by the existing private <code > style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">getVendor()</code> > used in lib/Basic/LangOptions.cpp.</p><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">Use:</p><div > style="margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)"><pre > style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;margin-top:0px;margin-bottom:0px;line-height:1.45;word-wrap:normal;padding:16px;overflow:auto;background-color:rgb(247,247,247);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-break:normal">#<span > style="color:rgb(167,29,93)">if</span> vendor(Apple) > <span style="color:rgb(150,152,150)">// Code specific to Apple platform > deployment</span> > #endif</pre></div><h3 > style="margin-top:1em;margin-bottom:16px;line-height:1.43;font-size:1.5em;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';background-color:rgb(255,255,255)"><a > href="https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#interop"; > style="background-color:transparent;color:rgb(64,120,192);text-decoration:none;display:inline-block;padding-right:2px;line-height:1.2" > target="_blank"><u></u><u></u><u></u><u></u></a>Interop</h3><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">Swift's > Objective-C compatibility enables developers to build mix-and-match projects > with a mixed-language codebase. This proposal introduces a test to determine > whether the Objective-C runtime is available for use. This test uses only one > option, <code style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">objc</code>, > although it could potentially expand to other scenarios, such as jvm, clr, > and C++. </p><div > style="margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)"><pre > style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;margin-top:0px;margin-bottom:0px;line-height:1.45;word-wrap:normal;padding:16px;overflow:auto;background-color:rgb(247,247,247);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-break:normal"><span > style="color:rgb(167,29,93)">if</span> (EnableObjCInterop) > <span style="color:rgb(121,93,163)">addPlatformConditionValue</span>(<span > style="color:rgb(24,54,145)"><span>"</span>_runtime<span>"</span></span>, > <span > style="color:rgb(24,54,145)"><span>"</span>_ObjC<span>"</span></span>); > <span style="color:rgb(167,29,93)">else</span> > <span style="color:rgb(121,93,163)">addPlatformConditionValue</span>(<span > style="color:rgb(24,54,145)"><span>"</span>_runtime<span>"</span></span>, > <span > style="color:rgb(24,54,145)"><span>"</span>_Native<span>"</span></span>)</pre></div><p > > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">Use:</p><div > style="margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)"><pre > style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;margin-top:0px;margin-bottom:0px;line-height:1.45;word-wrap:normal;padding:16px;overflow:auto;background-color:rgb(247,247,247);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-break:normal">#<span > style="color:rgb(167,29,93)">if</span> interop(objc) > <span style="color:rgb(150,152,150)">// Code that depends on > Objective-C</span> > #endif</pre></div><h3 > style="margin-top:1em;margin-bottom:16px;line-height:1.43;font-size:1.5em;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';background-color:rgb(255,255,255)"><a > href="https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#simulator-conditions"; > > style="background-color:transparent;color:rgb(64,120,192);text-decoration:none;display:inline-block;padding-right:2px;line-height:1.2" > target="_blank"><u></u><u></u><u></u><u></u></a>Simulator Conditions</h3><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">Xcode > simulators enable developers to test code on a wide range of platforms > without directly using physical devices. A simulator may not offer the full > suite of modules available with device deployment or provide device-only > hardware hooks like GPS. This proposal introduces a test for simulator > platform conditions, enabling developers to omit references to unsupported > features. It offers two options: <code > style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">simulator</code> > and <code style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">device</code>.</p><div > style="margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)"><pre > style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;margin-top:0px;margin-bottom:0px;line-height:1.45;word-wrap:normal;padding:16px;overflow:auto;background-color:rgb(247,247,247);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-break:normal"><span > style="color:rgb(167,29,93)">bool</span> <span > style="color:rgb(121,93,163)">swift::tripleIsAnySimulator</span>(<span > style="color:rgb(167,29,93)">const</span> llvm::Triple &triple) { > <span style="color:rgb(167,29,93)">return</span> <span > style="color:rgb(0,134,179)">tripleIsiOSSimulator</span>(triple) || > <span style="color:rgb(0,134,179)">tripleIsWatchSimulator</span>(triple) || > <span style="color:rgb(0,134,179)">tripleIsAppleTVSimulator</span>(triple); > }</pre></div><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">This proposal > uses a <code style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">targetEnvironment</code> > test as <code style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">target</code> > or <code style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;padding:0.2em > 0px;margin:0px;background-color:rgba(0,0,0,0.0392157);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px">platform</code> > are too valuable burn on this test.</p><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">Use:</p><pre > style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;margin-top:0px;margin-bottom:16px;line-height:1.45;word-wrap:normal;padding:16px;overflow:auto;background-color:rgb(247,247,247);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;color:rgb(51,51,51)"><code > style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;padding:0px;margin:0px;background-color:transparent;border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-break:normal;border:0px;display:inline;overflow:visible;line-height:inherit;word-wrap:normal">#if > targetEnvironment(simulator) > // Code specific to simulator use > #endif > </code></pre><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">This condition > test would reduce the fragility and special casing currently in use: </p><div > style="margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)"><pre > style="font-family:Consolas,'Liberation > Mono',Menlo,Courier,monospace;font-size:14px;margin-top:0px;margin-bottom:0px;line-height:1.45;word-wrap:normal;padding:16px;overflow:auto;background-color:rgb(247,247,247);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-break:normal">#<span > style="color:rgb(167,29,93)">if</span> (arch(i386) <span > style="color:rgb(167,29,93)">||</span> arch(x86_64)) <span > style="color:rgb(167,29,93)">&&</span> os(iOS) > <span style="color:rgb(0,134,179)">print</span>(<span > style="color:rgb(24,54,145)"><span>"</span>Probably > simulator<span>"</span></span>) > #endif</pre></div><h2 > style="margin-top:1em;margin-bottom:16px;line-height:1.225;font-size:1.75em;padding-bottom:0.3em;border-bottom-width:1px;border-bottom-style:solid;border-bottom-color:rgb(238,238,238);color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';background-color:rgb(255,255,255)"><a > href="https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#impact-on-existing-code"; > > style="background-color:transparent;color:rgb(64,120,192);text-decoration:none;display:inline-block;padding-right:2px;line-height:1" > target="_blank"><u></u><u></u><u></u><u></u></a>Impact on Existing > Code</h2><p > style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255)">This proposal > is additive and should not affect existing code. Some developers may refactor > code as in the case of the simulator/device test.</p><h2 > style="margin-top:1em;margin-bottom:16px;line-height:1.225;font-size:1.75em;padding-bottom:0.3em;border-bottom-width:1px;border-bottom-style:solid;border-bottom-color:rgb(238,238,238);color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';background-color:rgb(255,255,255)"><a > href="https://gist.github.com/erica/c9c11b540a2439696b2f514c2ffc6298#alternatives-considered"; > > style="background-color:transparent;color:rgb(64,120,192);text-decoration:none;display:inline-block;padding-right:2px;line-height:1" > target="_blank"><u></u><u></u><u></u><u></u></a>Alternatives > Considered</h2><div > style="margin-top:0px;color:rgb(51,51,51);font-family:'Helvetica > Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif,'Apple > Color Emoji','Segoe UI Emoji','Segoe UI > Symbol';font-size:16px;background-color:rgb(255,255,255);margin-bottom:0px!important">Not > accepting this > proposal</div></div></div><br>_______________________________________________<br> > swift-evolution mailing list<br> > <a href="mailto:[email protected]";>[email protected]</a><br> > <a href="https://lists.swift.org/mailman/listinfo/swift-evolution"; > rel="noreferrer" > target="_blank">https://lists.swift.org/mailman/listinfo/swift-evolution</a><br> > <br></blockquote></div><br></div></div> > > --94eb2c06f27acab4dd0536653f4f-- _______________________________________________ swift-evolution mailing list [email protected] https://lists.swift.org/mailman/listinfo/swift-evolution
