VM basics (#5)

Co-authored-by: Andre Wagner <WagnerAndre@JohnDeere.com>
Reviewed-on: https://192.168.5.48/andre/tyche/pulls/5

src/vm/vm.hh

@@ -0,0 +1,35 @@
+#ifndef TYCHE_VM_HH
+#define TYCHE_VM_HH
+
+#include "code.hh"
+#include "location.hh"
+#include "stack.hh"
+
+namespace tyche::vm {
+
+class VM {
+public:
+    void load_bytecode(ByteArray const& ba);
+
+    void call(size_t n_params);
+
+    [[nodiscard]] int32_t to_integer(int index) const;
+
+    void push_integer(int32_t value);
+
+    [[nodiscard]] std::string debug_stack() const { return stack_.debug(); }
+
+private:
+    void run_until_return();
+    void step();
+
+    static void assert_type(Value const& val, Type type);
+
+    Stack stack_;
+    Code code_;
+    std::stack<Location> loc_;
+};
+
+} // tyche
+
+#endif //TYCHE_VM_HH