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Adjust to return compatibility version in Swift 3 mode.

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This commit is contained in:
Ted Kremenek
2017-04-19 12:17:54 -07:00
parent b7b9245faa
commit dcc43ec602
1 changed files with 10 additions and 6 deletions
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16
lib/Basic/Version.cpp
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@@ -312,19 +312,23 @@ Optional<Version> Version::getEffectiveLanguageVersion() const {
return None;
}
// FIXME: When we switch to Swift 4 by default, the "3" case should return
// a version newer than any released 3.x compiler (probably "3.2"), and the
// "4" case should start returning getCurrentLanguageVersion. We should
// FIXME: When we switch to Swift 5 by default, the "4" case should return
// a version newer than any released 4.x compiler, and the
// "5" case should start returning getCurrentLanguageVersion. We should
// also check for the presence of SWIFT_VERSION_PATCHLEVEL, and if that's
// set apply it to the "3" case, so that Swift 4.0.1 will automatically
// have a compatibility mode of 3.2.1.
switch (Components[0]) {
case 3:
static_assert(SWIFT_VERSION_MAJOR == 3,
#ifdef SWIFT_VERSION_PATCHLEVEL
return Version{3, 2, SWIFT_VERSION_PATCHLEVEL};
#else
return Version{3, 2};
#endif
case 4:
static_assert(SWIFT_VERSION_MAJOR == 4,
"getCurrentLanguageVersion is no longer correct here");
return Version::getCurrentLanguageVersion();
case 4:
return Version{4, 0};
default:
return None;
}