Absorb TypeCheckerFlags into the Swift Frontend

Supports swiftlang/swift#28173

Author: CodaFi

lldb/include/lldb/Core/SwiftForward.h

@@ -64,6 +64,7 @@ class TupleTypeElt;
 class Type;
 class TypeAliasType;
 class TypeBase;
+class TypeCheckerOptions;
 class TypeDecl;
 class TypeInfo;
 class UnionElementDecl;

lldb/include/lldb/Symbol/SwiftASTContext.h

@@ -166,6 +166,8 @@ class SwiftASTContext : public TypeSystem {
 
   swift::LangOptions &GetLanguageOptions();
 
+  swift::TypeCheckerOptions &GetTypeCheckerOptions();
+
   swift::DiagnosticEngine &GetDiagnosticEngine();
 
   swift::SearchPathOptions &GetSearchPathOptions();

lldb/source/Plugins/ExpressionParser/Swift/SwiftExpressionParser.cpp

@@ -1465,10 +1465,7 @@ unsigned SwiftExpressionParser::Parse(DiagnosticManager &diagnostic_manager,
 
   // Not persistent because we're building source files one at a time.
   swift::TopLevelContext top_level_context;
-  swift::OptionSet<swift::TypeCheckingFlags> type_checking_options;
-
-  swift::performTypeChecking(parsed_expr->source_file, top_level_context,
-                             type_checking_options);
+  swift::performTypeChecking(parsed_expr->source_file, top_level_context);
 
   if (swift_ast_ctx->HasErrors()) {
     DiagnoseSwiftASTContextError();

lldb/source/Symbol/SwiftASTContext.cpp

@@ -2695,6 +2695,10 @@ swift::LangOptions &SwiftASTContext::GetLanguageOptions() {
   return GetCompilerInvocation().getLangOptions();
 }
 
+swift::TypeCheckerOptions &SwiftASTContext::GetTypeCheckerOptions() {
+  return GetCompilerInvocation().getTypeCheckerOptions();
+}
+
 swift::DiagnosticEngine &SwiftASTContext::GetDiagnosticEngine() {
   if (!m_diagnostic_engine_ap) {
     m_diagnostic_engine_ap.reset(
@@ -3394,7 +3398,8 @@ swift::ASTContext *SwiftASTContext::GetASTContext() {
     return m_ast_context_ap.get();
 
   m_ast_context_ap.reset(
-      swift::ASTContext::get(GetLanguageOptions(), GetSearchPathOptions(),
+      swift::ASTContext::get(GetLanguageOptions(), GetTypeCheckerOptions(),
+                             GetSearchPathOptions(),
                              GetSourceManager(), GetDiagnosticEngine()));
   m_diagnostic_consumer_ap.reset(new StoringDiagnosticConsumer(*this));