Save exception and stack trace variables in async catch clauses and use them

runtime/vm/parser.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_PARSER_H_
 #define VM_PARSER_H_
 
 #include "include/dart_api.h"
 
 #include "platform/assert.h"
@@ skipping 584 matching lines @@
   RawClass* CheckCaseExpressions(const GrowableArray<LiteralNode*>& values);
   CaseNode* ParseCaseClause(LocalVariable* switch_expr_value,
                             GrowableArray<LiteralNode*>* case_expr_values,
                             SourceLabel* case_label);
   AstNode* ParseSwitchStatement(String* label_name);
 
   // try/catch/finally parsing.
   void AddCatchParamsToScope(CatchParamDesc* exception_param,
                              CatchParamDesc* stack_trace_param,
                              LocalScope* scope);
+  void AddSavedExceptionAndStacktraceToScope(LocalVariable* exception_var,
+                                             LocalVariable* stack_trace_var,
+                                             LocalScope* scope);
   // Parse all the catch clause of a try.
   SequenceNode* ParseCatchClauses(intptr_t handler_pos,
                                   LocalVariable* exception_var,
                                   LocalVariable* stack_trace_var,
                                   const GrowableObjectArray& handler_types,
                                   bool* needs_stack_trace);
   // Parse finally block and create an AST for it.
   SequenceNode* ParseFinallyBlock();
   // Adds try block to the list of try blocks seen so far.
   void PushTryBlock(Block* try_block);
@@ skipping 226 matching lines @@
 
   // Indentation of parser trace.
   intptr_t trace_indent_;
 
   DISALLOW_COPY_AND_ASSIGN(Parser);
 };
 
 }  // namespace dart
 
 #endif  // VM_PARSER_H_