Made Target hold a map of languages to TypeSystems, and added some accessors.
Also added some target-level search functions so that persistent variables and
symbols can be searched for without hand-iterating across the map of
TypeSystems.

llvm-svn: 249027
diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ASTResultSynthesizer.cpp b/lldb/source/Plugins/ExpressionParser/Clang/ASTResultSynthesizer.cpp
index 7845d04..02505bd 100644
--- a/lldb/source/Plugins/ExpressionParser/Clang/ASTResultSynthesizer.cpp
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ASTResultSynthesizer.cpp
@@ -464,7 +464,7 @@
                                                                  D);
 
     if (TypeDecl *TypeDecl_scratch = dyn_cast<TypeDecl>(D_scratch))
-        llvm::cast<ClangPersistentVariables>(m_target.GetScratchTypeSystemForLanguage(lldb::eLanguageTypeC)->GetPersistentExpressionState())->RegisterPersistentType(name_cs, TypeDecl_scratch);
+        llvm::cast<ClangPersistentVariables>(m_target.GetPersistentExpressionStateForLanguage(lldb::eLanguageTypeC))->RegisterPersistentType(name_cs, TypeDecl_scratch);
 }
 
 void
diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionDeclMap.cpp b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionDeclMap.cpp
index 40fb6c8..4356297 100644
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionDeclMap.cpp
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionDeclMap.cpp
@@ -104,7 +104,7 @@
 
     if (target)
     {
-        m_parser_vars->m_persistent_vars = llvm::cast<ClangPersistentVariables>(target->GetScratchTypeSystemForLanguage(eLanguageTypeC)->GetPersistentExpressionState());
+        m_parser_vars->m_persistent_vars = llvm::cast<ClangPersistentVariables>(target->GetPersistentExpressionStateForLanguage(eLanguageTypeC));
 
         if (!target->GetScratchClangASTContext())
             return false;
diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
index af148b4..729c50e 100644
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
@@ -331,7 +331,7 @@
     
     if (ClangModulesDeclVendor *decl_vendor = target_sp->GetClangModulesDeclVendor())
     {
-        ClangPersistentVariables *clang_persistent_vars = llvm::cast<ClangPersistentVariables>(target_sp->GetScratchTypeSystemForLanguage(lldb::eLanguageTypeC)->GetPersistentExpressionState());
+        ClangPersistentVariables *clang_persistent_vars = llvm::cast<ClangPersistentVariables>(target_sp->GetPersistentExpressionStateForLanguage(lldb::eLanguageTypeC));
         std::unique_ptr<PPCallbacks> pp_callbacks(new LLDBPreprocessorCallbacks(*decl_vendor, *clang_persistent_vars));
         m_pp_callbacks = static_cast<LLDBPreprocessorCallbacks*>(pp_callbacks.get());
         m_compiler->getPreprocessor().addPPCallbacks(std::move(pp_callbacks));
diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangUserExpression.cpp b/lldb/source/Plugins/ExpressionParser/Clang/ClangUserExpression.cpp
index c5e125f..c32ad57 100644
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangUserExpression.cpp
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangUserExpression.cpp
@@ -357,7 +357,7 @@
     
     if (ClangModulesDeclVendor *decl_vendor = m_target->GetClangModulesDeclVendor())
     {
-        const ClangModulesDeclVendor::ModuleVector &hand_imported_modules = llvm::cast<ClangPersistentVariables>(m_target->GetScratchTypeSystemForLanguage(lldb::eLanguageTypeC)->GetPersistentExpressionState())->GetHandLoadedClangModules();
+        const ClangModulesDeclVendor::ModuleVector &hand_imported_modules = llvm::cast<ClangPersistentVariables>(m_target->GetPersistentExpressionStateForLanguage(lldb::eLanguageTypeC))->GetHandLoadedClangModules();
         ClangModulesDeclVendor::ModuleVector modules_for_macros;
         
         for (ClangModulesDeclVendor::ModuleID module : hand_imported_modules)