[kernel] Delete most of the AST

runtime/vm/debugger.cc

 // 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.
 
 #include "vm/debugger.h"
 
 #include "include/dart_api.h"
 
 #include "platform/address_sanitizer.h"
 
 #include "vm/code_patcher.h"
 #include "vm/compiler.h"
 #include "vm/dart_entry.h"
 #include "vm/deopt_instructions.h"
 #include "vm/disassembler.h"
 #include "vm/flags.h"
 #include "vm/globals.h"
 #include "vm/json_stream.h"
+#include "vm/kernel_to_il.h"
 #include "vm/longjump.h"
 #include "vm/message_handler.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/os.h"
 #include "vm/parser.h"
 #include "vm/port.h"
 #include "vm/runtime_entry.h"
 #include "vm/service.h"
 #include "vm/service_event.h"
@@ skipping 3738 matching lines @@
 bool Debugger::IsAtAsyncJump(ActivationFrame* top_frame) {
   Zone* zone = Thread::Current()->zone();
   Object& closure_or_null =
       Object::Handle(zone, top_frame->GetAsyncOperation());
   if (!closure_or_null.IsNull()) {
     ASSERT(closure_or_null.IsInstance());
     ASSERT(Instance::Cast(closure_or_null).IsClosure());
     const Script& script = Script::Handle(zone, top_frame->SourceScript());
     if (script.kind() == RawScript::kKernelTag) {
       // Are we at a yield point (previous await)?
-      const Array& yields = Array::Handle(script.yield_positions());
+      Array& yields = Array::Handle(script.yield_positions());

[Kevin Millikin (Google), 2017/06/29 12:27:36]

It can still be const, can't it?

[jensj, 2017/06/30 05:51:17]

Yes.
In fact, this file no longer needs to change at all.

       intptr_t looking_for = top_frame->TokenPos().value();
       Smi& value = Smi::Handle(zone);
       for (int i = 0; i < yields.Length(); i++) {
         value ^= yields.At(i);
         if (value.Value() == looking_for) return true;
       }
       return false;
     }
     const TokenStream& tokens = TokenStream::Handle(zone, script.tokens());
     TokenStream::Iterator iter(zone, tokens, top_frame->TokenPos());
@@ skipping 741 matching lines @@
 
 void Debugger::RegisterCodeBreakpoint(CodeBreakpoint* bpt) {
   ASSERT(bpt->next() == NULL);
   bpt->set_next(code_breakpoints_);
   code_breakpoints_ = bpt;
 }
 
 #endif  // !PRODUCT
 
 }  // namespace dart