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
143,733 Commits 623 Branches 2,949 Tags
cc3a53091d0dbab44415defca3de7d661c38cb15
Commit Graph

18 Commits

Author SHA1 Message Date
Holly Borla
f4bfce6448 [RequirementMachine] Map same-shape requriements to rewrite rules. 
A same-shape requirement 'length(T...) == length(U...)' becomes a rewrite
rule 'T.[shape] => U.[shape]'. Reduced shape rules will drop the [shape]
term from each side of the rule, and create a same-shape requirement
between the two type parameter packs.
 2022-10-06 20:38:31 -07:00
Holly Borla
0f13eda26c [RequirementMachine] Add a new symbol kind for the shape of a parameter 
pack.
 2022-10-06 20:38:30 -07:00
Josh Soref
81d3ad76ac Spelling ast (#42463) 
* spelling: accessor

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: accommodates

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: argument

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: associated

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: availability

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: available

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: belongs

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: bookkeeping

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: building

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: clazz

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: clonable

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: closure

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: concatenated

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: conformance

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: context

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: conversion

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: correspondence

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: declarations

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: declared

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: defining

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: delayed

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: dependency

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: deployed

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: descendants

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: diagnose

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: diagnostic

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: equitable

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: evaluation

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: exclusivity

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: existence

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: existential

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: explicit

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: expressed

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: for

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: foreign

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: function

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: identifier

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: implicit

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: indices

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: information

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: instance

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: interchangeable

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: interface

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: introduced

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: invalid

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: kind-in

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: least

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: library

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: location

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: namespace

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: necessary

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: nonexistent

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: not

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: number

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: obtains

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: occurs

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: opaque

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: overridden

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: parameter

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: precede

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: preceding

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: property

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: protocol

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: qualified

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: recognized

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: recursively

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: references

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: relaxing

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: represented

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: request

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: requirement

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: requirements

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: retrieve

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: returned

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: satisfied

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: satisfy

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: scanner

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: siblings

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: simplified

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: something

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: source

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: specializations

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: specially

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: statement

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: stripped

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: structure

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: substitution

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: the

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: transform

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: transformed

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: transitively

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: transparent

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: typecheck

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: unknown

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: unlabeled

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: unqualified

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: whether

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: with

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: scanner

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

Co-authored-by: Josh Soref <jsoref@users.noreply.github.com>
 2022-04-21 12:57:16 -07:00
Slava Pestov
755941c21f RequirementMachine: Split off Rule.cpp from RewriteSystem.cpp 2022-03-15 13:35:34 -04:00
Slava Pestov
aa210d29ae RequirementMachine: Prefer to eliminate concrete type requirements over superclass requirements again 
If you have something like this:

    protocol P {
      associatedtype A : Q where Self == Self.A.B
    }

    protocol Q {
      associatedtype B
    }

    class C : P {
      typealias A = D
    }

    class D : P {
      typealias B = C
    }

The GSB would minimize the generic signature <T where T : P, T : C>
to <T where T == C>, because of the same-type requirement in
protocol P.

However in reality, the conformance 'C : P' is unsound, because it
is no longer covariant. I added a warning in commit d831eff74879cb.

Because the upcoming 'concrete contraction' pass eliminates 'T : P'
before homotopy reduction gets a chance to run, I'm changing the
Requirement Machine to produce a different minimization from the
GSB. This is technically an ABI break, but it should not impact any
real code in practice. If it does, I'll need to come up with a
different workaround in concrete contraction.
 2022-02-25 11:48:38 -05:00
Slava Pestov
966620bbaa RequirementMachine: Swap reduction order of ConcreteType and Superclass symbols 
This ensures we produce the same minimal signature as the GSB
in a couple of really silly examples where a superclass requirement
and a concrete type requirement imply each other.
 2022-02-17 19:40:58 -05:00
Slava Pestov
0d0bcb2ff1 RequirementMachine: Simplify the Symbol API for removal of merged associated types 2022-02-07 18:57:45 -05:00
Slava Pestov
037dc98845 RequirementMachine: Generalize compare() methods to return None instead of asserting on incomparable symbols 2022-02-07 08:20:59 -05:00
Slava Pestov
4f3d05f502 RequirementMachine: Remove Symbol::getSuperclass() 2022-02-04 22:47:19 -05:00
Slava Pestov
4cc7589f7b RequirementMachine: Symbols and Terms should have PointerLikeTypeTraits 2021-12-17 10:04:51 -05:00
Slava Pestov
26293c4695 RequirementMachine: Factor out Symbol::withConcreteSubstitutions() 2021-12-07 15:31:47 -05:00
Slava Pestov
d19b15b66c RequirementMachine: Introduce Symbol::Kind::ConcreteConformance 2021-12-06 23:04:46 -05:00
Slava Pestov
0571b65cb8 RequirementMachine: Move protocol linear order from ProtocolGraph to RewriteContext 2021-10-21 19:00:10 -04:00
Slava Pestov
0935952038 RequirementMachine: Cache result of mergeAssociatedTypes() 2021-08-19 22:14:58 -04:00
Slava Pestov
bc398ae1df RequirementMachine: Make Symbols hashable 2021-08-05 21:42:50 -04:00
Slava Pestov
92ac06a25b RequirementMachine: Rules store uniqued Terms 2021-08-05 21:42:50 -04:00
Slava Pestov
ed966e7337 RequirementMachine: Add histograms for symbol kinds and term length 2021-08-05 21:42:50 -04:00
Slava Pestov
7adfd86e37 RequirementMachine: Split off Symbol.cpp and Term.cpp from RewriteSystem.cpp 2021-08-05 21:42:49 -04:00