Move global conformance lookup entry points to ConformanceLookup.h

include/swift/AST/ConformanceLookup.h

@@ -0,0 +1,98 @@
+//===--- ConformanceLookup.h - Global conformance lookup --------*- C++ -*-===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2024 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See https://swift.org/LICENSE.txt for license information
+// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SWIFT_AST_CONFORMANCELOOKUP_H
+#define SWIFT_AST_CONFORMANCELOOKUP_H
+
+#include "llvm/ADT/ArrayRef.h"
+#include <optional>
+
+namespace swift {
+
+class CanType;
+class Type;
+class ProtocolConformanceRef;
+class ProtocolDecl;
+
+/// Global conformance lookup, does not check conditional requirements.
+///
+/// \param type The type for which we are computing conformance.
+///
+/// \param protocol The protocol to which we are computing conformance.
+///
+/// \param allowMissing When \c true, the resulting conformance reference
+/// might include "missing" conformances, which are synthesized for some
+/// protocols as an error recovery mechanism.
+///
+/// \returns An invalid conformance if the search failed, otherwise an
+/// abstract, concrete or pack conformance, depending on the lookup type.
+ProtocolConformanceRef lookupConformance(Type type, ProtocolDecl *protocol,
+                                         bool allowMissing = false);
+
+/// Global conformance lookup, checks conditional requirements.
+/// Requires a contextualized type.
+///
+/// \param type The type for which we are computing conformance. Must not
+/// contain type parameters.
+///
+/// \param protocol The protocol to which we are computing conformance.
+///
+/// \param allowMissing When \c true, the resulting conformance reference
+/// might include "missing" conformances, which are synthesized for some
+/// protocols as an error recovery mechanism.
+///
+/// \returns An invalid conformance if the search failed, otherwise an
+/// abstract, concrete or pack conformance, depending on the lookup type.
+ProtocolConformanceRef checkConformance(Type type, ProtocolDecl *protocol,
+                                        // Note: different default from
+                                        // lookupConformance
+                                        bool allowMissing = true);
+
+/// Global conformance lookup, checks conditional requirements.
+/// Accepts interface types without context. If the conformance cannot be
+/// definitively established without the missing context, returns \c nullopt.
+///
+/// \param type The type for which we are computing conformance. Must not
+/// contain type parameters.
+///
+/// \param protocol The protocol to which we are computing conformance.
+///
+/// \param allowMissing When \c true, the resulting conformance reference
+/// might include "missing" conformances, which are synthesized for some
+/// protocols as an error recovery mechanism.
+///
+/// \returns An invalid conformance if the search definitively failed. An
+/// abstract, concrete or pack conformance, depending on the lookup type,
+/// if the search succeeded. `std::nullopt` if the type could have
+/// conditionally conformed depending on the context of the interface types.
+std::optional<ProtocolConformanceRef>
+checkConformanceWithoutContext(Type type,
+                               ProtocolDecl *protocol,
+                               // Note: different default from
+                               // lookupConformance
+                               bool allowMissing = true);
+
+
+/// Look for the conformance of the given existential type to the given
+/// protocol.
+ProtocolConformanceRef lookupExistentialConformance(Type type,
+                                                    ProtocolDecl *protocol);
+
+/// Collect the conformances of \c fromType to each of the protocols of an
+/// existential type's layout.
+llvm::ArrayRef<ProtocolConformanceRef>
+collectExistentialConformances(CanType fromType, CanType existential,
+                               bool allowMissing = false);
+
+}
+
+#endif // SWIFT_AST_CONFORMANCELOOKUP_H

include/swift/AST/Module.h

@@ -876,76 +876,6 @@ class ModuleDecl
                          DeclName name,
                          SmallVectorImpl<ValueDecl*> &results) const;
 
-  /// Global conformance lookup, does not check conditional requirements.
-  ///
-  /// \param type The type for which we are computing conformance.
-  ///
-  /// \param protocol The protocol to which we are computing conformance.
-  ///
-  /// \param allowMissing When \c true, the resulting conformance reference
-  /// might include "missing" conformances, which are synthesized for some
-  /// protocols as an error recovery mechanism.
-  ///
-  /// \returns An invalid conformance if the search failed, otherwise an
-  /// abstract, concrete or pack conformance, depending on the lookup type.
-  static ProtocolConformanceRef lookupConformance(Type type, ProtocolDecl *protocol,
-                                                  bool allowMissing = false);
-
-  /// Global conformance lookup, checks conditional requirements.
-  /// Requires a contextualized type.
-  ///
-  /// \param type The type for which we are computing conformance. Must not
-  /// contain type parameters.
-  ///
-  /// \param protocol The protocol to which we are computing conformance.
-  ///
-  /// \param allowMissing When \c true, the resulting conformance reference
-  /// might include "missing" conformances, which are synthesized for some
-  /// protocols as an error recovery mechanism.
-  ///
-  /// \returns An invalid conformance if the search failed, otherwise an
-  /// abstract, concrete or pack conformance, depending on the lookup type.
-  static ProtocolConformanceRef checkConformance(Type type, ProtocolDecl *protocol,
-                                                 // Note: different default from
-                                                 // lookupConformance
-                                                 bool allowMissing = true);
-
-  /// Global conformance lookup, checks conditional requirements.
-  /// Accepts interface types without context. If the conformance cannot be
-  /// definitively established without the missing context, returns \c nullopt.
-  ///
-  /// \param type The type for which we are computing conformance. Must not
-  /// contain type parameters.
-  ///
-  /// \param protocol The protocol to which we are computing conformance.
-  ///
-  /// \param allowMissing When \c true, the resulting conformance reference
-  /// might include "missing" conformances, which are synthesized for some
-  /// protocols as an error recovery mechanism.
-  ///
-  /// \returns An invalid conformance if the search definitively failed. An
-  /// abstract, concrete or pack conformance, depending on the lookup type,
-  /// if the search succeeded. `std::nullopt` if the type could have
-  /// conditionally conformed depending on the context of the interface types.
-  std::optional<ProtocolConformanceRef>
-  static checkConformanceWithoutContext(Type type,
-                                        ProtocolDecl *protocol,
-                                        // Note: different default from
-                                        // lookupConformance
-                                        bool allowMissing = true);
-
-
-  /// Look for the conformance of the given existential type to the given
-  /// protocol.
-  static ProtocolConformanceRef lookupExistentialConformance(Type type,
-                                                             ProtocolDecl *protocol);
-
-  /// Collect the conformances of \c fromType to each of the protocols of an
-  /// existential type's layout.
-  ArrayRef<ProtocolConformanceRef>
-  static collectExistentialConformances(CanType fromType, CanType existential,
-                                        bool allowMissing = false);
-
   /// Find a member named \p name in \p container that was declared in this
   /// module.
   ///

include/swift/SIL/SILCloner.h

@@ -17,6 +17,7 @@
 #ifndef SWIFT_SIL_SILCLONER_H
 #define SWIFT_SIL_SILCLONER_H
 
+#include "swift/AST/ConformanceLookup.h"
 #include "swift/AST/GenericEnvironment.h"
 #include "swift/AST/ProtocolConformance.h"
 #include "swift/SIL/BasicBlockUtils.h"
@@ -50,7 +51,7 @@ struct SubstitutionMapWithLocalArchetypes {
                                     Type substType,
                                     ProtocolDecl *proto) {
     if (isa<LocalArchetypeType>(origType))
-      return ModuleDecl::lookupConformance(substType, proto);
+      return swift::lookupConformance(substType, proto);
     if (SubsMap)
       return SubsMap->lookupConformance(origType, proto);
 

lib/AST/ASTContext.cpp

@@ -21,6 +21,7 @@
 #include "swift/ABI/MetadataValues.h"
 #include "swift/AST/ClangModuleLoader.h"
 #include "swift/AST/ConcreteDeclRef.h"
+#include "swift/AST/ConformanceLookup.h"
 #include "swift/AST/DiagnosticEngine.h"
 #include "swift/AST/DiagnosticsFrontend.h"
 #include "swift/AST/DiagnosticsSema.h"
@@ -1613,8 +1614,7 @@ ASTContext::getBuiltinInitDecl(NominalTypeDecl *decl,
 
   auto type = decl->getDeclaredInterfaceType();
   auto builtinProtocol = getProtocol(builtinProtocolKind);
-  auto builtinConformance = ModuleDecl::lookupConformance(
-      type, builtinProtocol);
+  auto builtinConformance = lookupConformance(type, builtinProtocol);
   if (builtinConformance.isInvalid()) {
     assert(false && "Missing required conformance");
     witness = ConcreteDeclRef();
@@ -5834,7 +5834,7 @@ ASTContext::getForeignRepresentationInfo(NominalTypeDecl *nominal,
     if (nominal != dc->getASTContext().getOptionalDecl()) {
       if (auto objcBridgeable
             = getProtocol(KnownProtocolKind::ObjectiveCBridgeable)) {
-        auto conformance = ModuleDecl::lookupConformance(
+        auto conformance = lookupConformance(
             nominal->getDeclaredInterfaceType(), objcBridgeable);
         if (conformance) {
           result =
@@ -5986,7 +5986,7 @@ Type ASTContext::getBridgedToObjC(const DeclContext *dc, Type type,
     if (!proto)
       return ProtocolConformanceRef::forInvalid();
 
-    return ModuleDecl::lookupConformance(type, proto);
+    return lookupConformance(type, proto);
   };
 
   // Do we conform to _ObjectiveCBridgeable?

lib/AST/ASTPrinter.cpp

@@ -23,6 +23,7 @@
 #include "swift/AST/Builtins.h"
 #include "swift/AST/ClangModuleLoader.h"
 #include "swift/AST/Comment.h"
+#include "swift/AST/ConformanceLookup.h"
 #include "swift/AST/Decl.h"
 #include "swift/AST/Expr.h"
 #include "swift/AST/FileUnit.h"
@@ -1799,7 +1800,7 @@ void PrintAST::printSingleDepthOfGenericSignature(
         return type;
       },
       [&](CanType depType, Type substType, ProtocolDecl *proto) {
-        return ModuleDecl::lookupConformance(substType, proto);
+        return lookupConformance(substType, proto);
       });
   };