Hacky streaming of VariableGet

runtime/vm/kernel_binary.cc

 // Copyright (c) 2016, 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.
 #if !defined(DART_PRECOMPILED_RUNTIME)
 
 #include "vm/kernel_binary.h"
 #include "platform/globals.h"
 #include "vm/flags.h"
 #include "vm/growable_array.h"
 #include "vm/kernel.h"
@@ skipping 503 matching lines @@
       reader->offset() - 1;  // -1 to include tag byte.
   return invalid_expression;
 }
 
 
 VariableGet* VariableGet::ReadFrom(Reader* reader) {
   TRACE_READ_OFFSET();
   VariableGet* get = new VariableGet();
   get->kernel_offset_ = reader->offset() - 1;  // -1 to include tag byte.
   get->position_ = reader->ReadPosition();
+  get->variable_kernel_offset_ = reader->ReadUInt();
   get->variable_ = reader->helper()->variables().Lookup(reader->ReadUInt());
+  ASSERT(get->variable_->kernel_offset() == get->variable_kernel_offset_);
   reader->ReadOptional<DartType>();  // Unused promoted type.
   return get;
 }
 
 
 VariableGet* VariableGet::ReadFrom(Reader* reader, uint8_t payload) {
   TRACE_READ_OFFSET();
   VariableGet* get = new VariableGet();
   get->kernel_offset_ = reader->offset() - 1;  // -1 to include tag byte.
   get->position_ = reader->ReadPosition();
+  get->variable_kernel_offset_ = reader->ReadUInt();
   get->variable_ = reader->helper()->variables().Lookup(payload);
+  ASSERT(get->variable_->kernel_offset() == get->variable_kernel_offset_);
   return get;
 }
 
 
 VariableSet* VariableSet::ReadFrom(Reader* reader) {
   TRACE_READ_OFFSET();
   VariableSet* set = new VariableSet();
   set->kernel_offset_ = reader->offset() - 1;  // -1 to include tag byte.
   set->position_ = reader->ReadPosition();
   set->variable_ = reader->helper()->variables().Lookup(reader->ReadUInt());
@@ skipping 912 matching lines @@
 
 kernel::Program* ReadPrecompiledKernelFromBuffer(const uint8_t* buffer,
                                                  intptr_t buffer_length) {
   kernel::Reader reader(buffer, buffer_length);
   return kernel::Program::ReadFrom(&reader);
 }
 
 
 }  // namespace dart
 #endif  // !defined(DART_PRECOMPILED_RUNTIME)