Implement ClangImporter importSourceLoc and importSourceRange (#40010)

Co-authored-by: Nuri Amari <nuriamari@fb.com>

Author: NuriAmari

lib/ClangImporter/ClangImporter.cpp

@@ -2265,14 +2265,13 @@ ClangImporter::Implementation::exportSourceLoc(SourceLoc loc) {
 
 SourceLoc
 ClangImporter::Implementation::importSourceLoc(clang::SourceLocation loc) {
-  // FIXME: Implement!
-  return SourceLoc();
+  return getBufferImporterForDiagnostics().resolveSourceLocation(
+      getClangASTContext().getSourceManager(), loc);
 }
 
 SourceRange
 ClangImporter::Implementation::importSourceRange(clang::SourceRange loc) {
-  // FIXME: Implement!
-  return SourceRange();
+  return SourceRange(importSourceLoc(loc.getBegin()), importSourceLoc(loc.getEnd()));
 }
 
 #pragma mark Importing names

lib/ClangImporter/ImportDecl.cpp

@@ -3376,8 +3376,11 @@ namespace {
       if (alreadyImportedResult != Impl.ImportedDecls.end())
         return alreadyImportedResult->second;
       result = Impl.createDeclWithClangNode<StructDecl>(
-          decl, AccessLevel::Public, Impl.importSourceLoc(decl->getBeginLoc()),
-          name, Impl.importSourceLoc(decl->getLocation()), None, nullptr, dc);
+          decl, AccessLevel::Public,
+          SourceLoc(), // FIXME: Impl.importSourceLoc(decl->getBeginLoc()) results in a bad import: SR-15440
+          name,
+          SourceLoc(), // FIXME: Impl.importSourceLoc(decl->getLocation()) result in a bad import: SR-15440
+          None, nullptr, dc);
       Impl.ImportedDecls[{decl->getCanonicalDecl(), getVersion()}] = result;
 
       // FIXME: Figure out what to do with superclasses in C++. One possible
@@ -4215,7 +4218,7 @@ namespace {
         Impl.createDeclWithClangNode<VarDecl>(decl, AccessLevel::Public,
                               /*IsStatic*/ false,
                               VarDecl::Introducer::Var,
-                              Impl.importSourceLoc(decl->getLocation()),
+                              SourceLoc(), // FIXME: Impl.importSourceLoc(decl->getLocation()) result in a bad import: SR-15440
                               name, dc);
       if (decl->getType().isConstQualified()) {
         // Note that in C++ there are ways to change the values of const
@@ -6939,7 +6942,7 @@ ConstructorDecl *SwiftDeclConverter::importConstructor(
   assert(!importedName.getAsyncInfo());
   auto result = Impl.createDeclWithClangNode<ConstructorDecl>(
       objcMethod, AccessLevel::Public, importedName.getDeclName(),
-      /*NameLoc=*/SourceLoc(), failability, /*FailabilityLoc=*/SourceLoc(),
+      /*NameLoc=*/Impl.importSourceLoc(objcMethod->getBeginLoc()), failability, /*FailabilityLoc=*/SourceLoc(),
       /*Async=*/false, /*AsyncLoc=*/SourceLoc(),
       /*Throws=*/importedName.getErrorInfo().hasValue(),
       /*ThrowsLoc=*/SourceLoc(), bodyParams,