[TypeCategory] Nothing passes down a list of languages.

[davide]

Summary

This should allow further simplifications, but it's a first step.

lldb/include/lldb/DataFormatters/TypeCategory.h

private:
 
     SynthContainer::ExactMatchForEachCallback m_synth_exact;
     SynthContainer::RegexMatchForEachCallback m_synth_regex;
 
     ValidatorContainer::ExactMatchForEachCallback m_validator_exact;
     ValidatorContainer::RegexMatchForEachCallback m_validator_regex;
   };
 
-  TypeCategoryImpl(IFormatChangeListener *clist, ConstString name,
-                   std::initializer_list<lldb::LanguageType> langs = {});
+  TypeCategoryImpl(IFormatChangeListener *clist, ConstString name);
 
   template <typename T> void ForEach(const ForEachCallbacks<T> &foreach) {
     GetTypeFormatsContainer()->ForEach(foreach.GetFormatExactCallback());
     GetRegexTypeFormatsContainer()->ForEach(foreach.GetFormatRegexCallback());
 
     GetTypeSummariesContainer()->ForEach(foreach.GetSummaryExactCallback());
     GetRegexTypeSummariesContainer()->ForEach(
         foreach.GetSummaryRegexCallback());

lldb/source/DataFormatters/TypeCategory.cpp

 //===-- TypeCategory.cpp -----------------------------------------*- C++-*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 #include "lldb/DataFormatters/TypeCategory.h"
 #include "lldb/Target/Language.h"
 
 
 using namespace lldb;
 using namespace lldb_private;
 
-TypeCategoryImpl::TypeCategoryImpl(
-    IFormatChangeListener *clist, ConstString name,
-    std::initializer_list<lldb::LanguageType> langs)
+TypeCategoryImpl::TypeCategoryImpl(IFormatChangeListener *clist,
+                                   ConstString name)
     : m_format_cont("format", "regex-format", clist),
       m_summary_cont("summary", "regex-summary", clist),
       m_filter_cont("filter", "regex-filter", clist),
       m_synth_cont("synth", "regex-synth", clist),
       m_validator_cont("validator", "regex-validator", clist), m_enabled(false),
-      m_change_listener(clist), m_mutex(), m_name(name), m_languages() {
-  for (const lldb::LanguageType lang : langs)
-    AddLanguage(lang);
-}
+      m_change_listener(clist), m_mutex(), m_name(name), m_languages() {}
 
 static bool IsApplicable(lldb::LanguageType category_lang,
                          lldb::LanguageType valobj_lang) {
   switch (category_lang) {
   // Unless we know better, allow only exact equality.
   default:
     return category_lang == valobj_lang;