averello/swift-mirror
1
0
Fork 0
mirror of https://github.com/apple/swift.git synced 2025-12-21 12:14:44 +01:00
Code Issues Packages Projects Releases Wiki Activity

Sema: Hook up layout constraints to the solver

Browse Source 
There were various problems with layout constraints either
being ignored or handled incorrectly. Now that I've exercised
this support with an upcoming patch, there are some fixes
here.

Also, introduce a new ExistentialLayout::getLayoutConstriant()
which returns a value for existentials which are class-constrained
but don't have a superclass or any class-constrained protocols;
an example would be AnyObject, or AnyObject & P for some
non-class protocol P.

NFC for now, since these layout-constrained existentials cannot
be constructed yet.
This commit is contained in:
Slava Pestov
2017-04-13 01:27:44 -07:00
parent d58f049608
commit db58e02cb2
14 changed files with 96 additions and 68 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
lib/Sema/CSGen.cpp
View File

@@ -3261,7 +3261,8 @@ bool swift::isExtensionApplied(DeclContext &DC, Type BaseTy,
createMemberConstraint(Req, ConstraintKind::ConformsTo);
break;
case RequirementKind::Layout:
createMemberConstraint(Req, ConstraintKind::Layout);
// FIXME FIXME FIXME
createMemberConstraint(Req, ConstraintKind::ConformsTo);
break;
case RequirementKind::Superclass:
createMemberConstraint(Req, ConstraintKind::Subtype);