Swift AST: add GenericSignature.mapTypeIntoContext

Author: eeckstein

SwiftCompilerSources/Sources/AST/GenericSignature.swift

@@ -29,4 +29,8 @@ public struct GenericSignature: CustomStringConvertible, NoReflectionChildren {
   public var genericParameters: TypeArray {
     TypeArray(bridged: bridged.getGenericParams())
   }
+
+  public func mapTypeIntoContext(_ type: Type) -> Type {
+    Type(bridged: bridged.mapTypeIntoContext(type.bridged))
+  }
 }

include/swift/AST/ASTBridging.h

@@ -3189,6 +3189,7 @@ struct BridgedGenericSignature {
   BRIDGED_INLINE swift::GenericSignature unbridged() const;
   BridgedOwnedString getDebugDescription() const;
   SWIFT_IMPORT_UNSAFE BRIDGED_INLINE BridgedASTTypeArray getGenericParams() const;
+  SWIFT_IMPORT_UNSAFE BRIDGED_INLINE BridgedASTType mapTypeIntoContext(BridgedASTType type) const;
 };
 
 struct BridgedFingerprint {

include/swift/AST/ASTBridgingImpl.h

@@ -20,6 +20,7 @@
 #include "swift/AST/Decl.h"
 #include "swift/AST/Expr.h"
 #include "swift/AST/GenericSignature.h"
+#include "swift/AST/GenericEnvironment.h"
 #include "swift/AST/IfConfigClauseRangeInfo.h"
 #include "swift/AST/MacroDeclaration.h"
 #include "swift/AST/ProtocolConformance.h"
@@ -823,6 +824,10 @@ BridgedASTTypeArray BridgedGenericSignature::getGenericParams() const {
   return {unbridged().getGenericParams()};
 }
 
+BridgedASTType BridgedGenericSignature::mapTypeIntoContext(BridgedASTType type) const {
+  return {unbridged().getGenericEnvironment()->mapTypeIntoContext(type.unbridged()).getPointer()};
+}
+
 //===----------------------------------------------------------------------===//
 // MARK: BridgedFingerprint
 //===----------------------------------------------------------------------===//