Use LLVM casting for TypeSystem so you can cast it to subclasses.

This will keep our code cleaner and it removes the need for intrusive additions to TypeSystem like:

class TypeSystem
{
    virtual ClangASTContext *
    AsClangASTContext() = 0;
}

As you can now just use the llvm::dyn_cast and other casts.

llvm-svn: 247041

1 files changed, 8 insertions, 4 deletions

diff --git a/lldb/source/DataFormatters/NSArray.cpp b/lldb/source/DataFormatters/NSArray.cpp
index 0bf340b1338..7630f6bcbcc 100644
--- a/lldb/source/DataFormatters/NSArray.cpp
+++ b/lldb/source/DataFormatters/NSArray.cpp
@@ -529,11 +529,15 @@ lldb_private::formatters::NSArrayISyntheticFrontEnd::NSArrayISyntheticFrontEnd (
     m_items (0),
     m_data_ptr (0)
 {
-    if (valobj_sp && valobj_sp->GetCompilerType().IsValid())
+    if (valobj_sp)
     {
-        ClangASTContext *ast = valobj_sp->GetCompilerType().GetTypeSystem()->AsClangASTContext();
-        if (ast)
-            m_id_type = CompilerType(ast->getASTContext(), ast->getASTContext()->ObjCBuiltinIdTy);
+        CompilerType type = valobj_sp->GetCompilerType();
+        if (type)
+        {
+            ClangASTContext *ast = valobj_sp->GetExecutionContextRef().GetTargetSP()->GetScratchClangASTContext();
+            if (ast)
+                m_id_type = CompilerType(ast->getASTContext(), ast->getASTContext()->ObjCBuiltinIdTy);
+        }
     }
 }