[ignition] desugar async functions/generators/modules in BytecodeGenerator

src/interpreter/bytecode-generator.h

Index: src/interpreter/bytecode-generator.h
diff --git a/src/interpreter/bytecode-generator.h b/src/interpreter/bytecode-generator.h
index f15829dea82514ca6f8fb7ebbebbcd16e3afdaa7..dc0141d4b32f9be8e8bdd1e1a450f3377802774e 100644
--- a/src/interpreter/bytecode-generator.h
+++ b/src/interpreter/bytecode-generator.h
@@ -53,6 +53,15 @@ class BytecodeGenerator final : public AstVisitor<BytecodeGenerator> {
   enum class TestFallthrough { kThen, kElse, kNone };
 
   void GenerateBytecodeBody();
+  void GenerateBytecodeBodyForAsyncFunction();
+  void GenerateBytecodeBodyForGenerator();
+  void GenerateBytecodeBodyForModule();
+
+  enum class BuildJSGeneratorObject { kNoInitialYield, kInitialYield };
+  void BuildAllocateAndStoreJSGeneratorObject(BuildJSGeneratorObject tag);
+  void BuildAllocateAndStoreJSPromise();
+  void BindUnboundGeneratorResumePoints();
+
   void AllocateDeferredConstants(Isolate* isolate);
 
   DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
@@ -164,6 +173,16 @@ class BytecodeGenerator final : public AstVisitor<BytecodeGenerator> {
   void VisitForTest(Expression* expr, BytecodeLabels* then_labels,
                     BytecodeLabels* else_labels, TestFallthrough fallthrough);
 
+  void BuildYield(int yield_id, Register generator, Register value);
+  void BuildYieldResumePoint(int yield_id, Yield::OnException on_exception,
+                             Register generator, int position);
+
+  void BuildTryCatch(HandlerTable::CatchPrediction catch_prediction,
+                     std::function<void()> build_try,
+                     std::function<void(Register context)> build_catch);
+  void BuildTryFinally(std::function<void()> build_try,
+                       std::function<void()> build_finally);
+
   // Returns the runtime function id for a store to super for the function's
   // language mode.
   inline Runtime::FunctionId StoreToSuperRuntimeId();
@@ -220,6 +239,7 @@ class BytecodeGenerator final : public AstVisitor<BytecodeGenerator> {
   ZoneVector<BytecodeLabel> generator_resume_points_;
   Register generator_state_;
   int loop_depth_;
+  HandlerTable::CatchPrediction catch_prediction_;
 
   Handle<Name> home_object_symbol_;
   Handle<Name> iterator_symbol_;