[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..970a13a47a0cc64de05a1f9d05955e72b0682e7b 100644
--- a/src/interpreter/bytecode-generator.h
+++ b/src/interpreter/bytecode-generator.h
@@ -49,10 +49,32 @@ class BytecodeGenerator final : public AstVisitor<BytecodeGenerator> {
   class RegisterAllocationScope;
   class TestResultScope;
   class ValueResultScope;
+  class SimpleTryCatchBuilder;
+  class SimpleTryFinallyBuilder;
+
+  template <class T>
+  class TryBlockBuilder;
+  typedef TryBlockBuilder<SimpleTryCatchBuilder> TryBlockBuilderForCatch;
+  typedef TryBlockBuilder<SimpleTryFinallyBuilder> TryBlockBuilderForFinally;
+  class CatchBlockBuilder;
+  class FinallyBlockBuilder;
+
+  friend class SimpleTryCatchBuilder;
+  friend class SimpleTryFinallyBuilder;
 
   enum class TestFallthrough { kThen, kElse, kNone };
 
   void GenerateBytecodeBody();
+  void GenerateBytecodeBodyForAsyncFunction(FunctionLiteral* literal);
+  void GenerateBytecodeBodyForGenerator(FunctionLiteral* literal);
+  void GenerateBytecodeBodyForModule(FunctionLiteral* literal);
+
+  enum class BuildJSGeneratorObject { kNoInitialYield, kInitialYield };
+  void BuildAllocateAndStoreJSGeneratorObject(FunctionLiteral* literal,
+                                              BuildJSGeneratorObject tag);
+  void BuildAllocateAndStoreJSPromise();
+  void BindUnboundGeneratorResumePoints();
+
   void AllocateDeferredConstants(Isolate* isolate);
 
   DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
@@ -164,6 +186,10 @@ 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);
+
   // Returns the runtime function id for a store to super for the function's
   // language mode.
   inline Runtime::FunctionId StoreToSuperRuntimeId();
@@ -220,6 +246,7 @@ 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_;