From 0ee364d2a28104aaa36e246fc8a316f86de32aae Mon Sep 17 00:00:00 2001
From: Adrian Prantl <aprantl@apple.com>
Date: Fri, 6 Dec 2024 15:11:21 -0800
Subject: [lldb] Add a compiler/interpreter of LLDB data formatter bytecode to
 lldb/examples (#113398)

This PR adds a proof-of-concept for a bytecode designed to ship and run
LLDB data formatters. More motivation and context can be found in the
`formatter-bytecode.md` file and on discourse.

https://discourse.llvm.org/t/a-bytecode-for-lldb-data-formatters/82696
---
 .../Python/Inputs/FormatterBytecode/MyOptional.cpp | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 lldb/test/Shell/ScriptInterpreter/Python/Inputs/FormatterBytecode/MyOptional.cpp

(limited to 'lldb/test/Shell/ScriptInterpreter/Python/Inputs/FormatterBytecode/MyOptional.cpp')

diff --git a/lldb/test/Shell/ScriptInterpreter/Python/Inputs/FormatterBytecode/MyOptional.cpp b/lldb/test/Shell/ScriptInterpreter/Python/Inputs/FormatterBytecode/MyOptional.cpp
new file mode 100644
index 000000000000..abba34439d88
--- /dev/null
+++ b/lldb/test/Shell/ScriptInterpreter/Python/Inputs/FormatterBytecode/MyOptional.cpp
@@ -0,0 +1,23 @@
+// A bare-bones llvm::Optional reimplementation.
+
+template <typename T> struct MyOptionalStorage {
+  MyOptionalStorage(T val) : value(val), hasVal(true) {}
+  MyOptionalStorage() {}
+  T value;
+  bool hasVal = false;
+};
+
+template <typename T> struct MyOptional {
+  MyOptionalStorage<T> Storage;
+  MyOptional(T val) : Storage(val) {}
+  MyOptional() {}
+  T &operator*() { return Storage.value; }
+};
+
+void stop() {}
+
+int main(int argc, char **argv) {
+  MyOptional<int> x, y = 42;
+  stop(); // break here
+  return *y;
+}
-- 
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