Start plumbing the type validator logic through to the ValueObjects; allow a ValueObject to have a validator, to update it from the FormatManager, and to retrieve (and cache) the result of the validation

llvm-svn: 217282

lldb/source/Core/ValueObject.cpp

@@ -77,6 +77,7 @@ ValueObject::ValueObject (ValueObject &parent) :
     m_location_str (),
     m_summary_str (),
     m_object_desc_str (),
+    m_validation_result(),
     m_manager(parent.GetManager()),
     m_children (),
     m_synthetic_children (),
@@ -89,6 +90,7 @@ ValueObject::ValueObject (ValueObject &parent) :
     m_type_summary_sp(),
     m_type_format_sp(),
     m_synthetic_children_sp(),
+    m_type_validator_sp(),
     m_user_id_of_forced_summary(),
     m_address_type_of_ptr_or_ref_children(eAddressTypeInvalid),
     m_value_is_valid (false),
@@ -123,6 +125,7 @@ ValueObject::ValueObject (ExecutionContextScope *exe_scope,
     m_location_str (),
     m_summary_str (),
     m_object_desc_str (),
+    m_validation_result(),
     m_manager(),
     m_children (),
     m_synthetic_children (),
@@ -135,6 +138,7 @@ ValueObject::ValueObject (ExecutionContextScope *exe_scope,
     m_type_summary_sp(),
     m_type_format_sp(),
     m_synthetic_children_sp(),
+    m_type_validator_sp(),
     m_user_id_of_forced_summary(),
     m_address_type_of_ptr_or_ref_children(child_ptr_or_ref_addr_type),
     m_value_is_valid (false),
@@ -253,6 +257,7 @@ ValueObject::UpdateFormatsIfNeeded()
 #ifndef LLDB_DISABLE_PYTHON
         SetSyntheticChildren(DataVisualization::GetSyntheticChildren (*this, GetDynamicValueType()));
 #endif
+        SetValidator(DataVisualization::GetValidator(*this, GetDynamicValueType()));
     }
 
     return any_change;
@@ -1341,6 +1346,23 @@ ValueObject::ReadPointedString (Stream& s,
     return total_bytes_read;
 }
 
+std::pair<TypeValidatorResult, std::string>
+ValueObject::GetValidationStatus ()
+{
+    if (!UpdateValueIfNeeded(true))
+        return {TypeValidatorResult::Success,""}; // not the validator's job to discuss update problems
+    
+    if (m_validation_result.hasValue())
+        return m_validation_result.getValue();
+    
+    if (!m_type_validator_sp)
+        return {TypeValidatorResult::Success,""}; // no validator no failure
+    
+    auto outcome = m_type_validator_sp->FormatObject(this);
+    
+    return (m_validation_result = {outcome.m_result,outcome.m_message}).getValue();
+}
+
 const char *
 ValueObject::GetObjectDescription ()
 {
@@ -3900,9 +3922,7 @@ ValueObject::ClearUserVisibleData(uint32_t clear_mask)
         m_location_str.clear();
     
     if ((clear_mask & eClearUserVisibleDataItemsSummary) == eClearUserVisibleDataItemsSummary)
-    {
         m_summary_str.clear();
-    }
     
     if ((clear_mask & eClearUserVisibleDataItemsDescription) == eClearUserVisibleDataItemsDescription)
         m_object_desc_str.clear();
@@ -3912,6 +3932,9 @@ ValueObject::ClearUserVisibleData(uint32_t clear_mask)
             if (m_synthetic_value)
                 m_synthetic_value = NULL;
     }
+    
+    if ((clear_mask & eClearUserVisibleDataItemsValidator) == eClearUserVisibleDataItemsValidator)
+        m_validation_result.reset();
 }
 
 SymbolContextScope *