================
@@ -251,3 +253,122 @@ std::string ScriptedSyntheticChildren::GetDescription() {
return std::string(sstr.GetString());
}
+
+BytecodeSyntheticChildren::FrontEnd::FrontEnd(
+ ValueObject &backend,
+ FormatterBytecode::SyntheticProviderDefinition &definition)
+ : SyntheticChildrenFrontEnd(backend), m_definition(definition) {
+ FormatterBytecode::DataStack data(backend.GetSP());
+ if (!m_definition.init) {
+ m_self = std::move(data);
+ return;
+ }
+
+ FormatterBytecode::ControlStack control = {m_definition.init->getBuffer()};
+ auto error =
+ FormatterBytecode::Interpret(control, data, FormatterBytecode::sig_init);
+
+ if (!error && data.size() > 0)
+ m_self = std::move(data);
+}
+
+lldb::ChildCacheState BytecodeSyntheticChildren::FrontEnd::Update() {
+ if (!m_definition.update)
+ return ChildCacheState::eRefetch;
+
+ FormatterBytecode::ControlStack control = {m_definition.update->getBuffer()};
+ FormatterBytecode::DataStack data = m_self;
+ auto error = FormatterBytecode::Interpret(control, data,
+ FormatterBytecode::sig_update);
+ if (!error && data.size() > 0)
+ m_self = std::move(data);
+
+ return ChildCacheState::eRefetch;
+}
+
+llvm::Expected<uint32_t>
+BytecodeSyntheticChildren::FrontEnd::CalculateNumChildren() {
+ if (!m_definition.num_children)
+ return 0;
+
+ FormatterBytecode::ControlStack control = {
+ m_definition.num_children->getBuffer()};
+ FormatterBytecode::DataStack data = m_self;
+ auto error = FormatterBytecode::Interpret(
+ control, data, FormatterBytecode::sig_get_num_children);
+ if (error)
+ return error;
+
+ if (data.size() == 0)
+ return llvm::createStringError(
+ "@get_num_children returned empty data stack");
+
+ const auto &top = data.back();
----------------
adrian-prantl wrote:
let's spell out the type again
https://github.com/llvm/llvm-project/pull/179832
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