First part of inspecting local variables

runtime/vm/raw_object.h

 // Copyright (c) 2011, 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_RAW_OBJECT_H_
 #define VM_RAW_OBJECT_H_
 
 #include "vm/assert.h"
 #include "vm/globals.h"
 #include "vm/snapshot.h"
@@ skipping 15 matching lines @@
     V(InstantiatedTypeArguments)                                               \
   V(Function)                                                                  \
   V(Field)                                                                     \
   V(TokenStream)                                                               \
   V(Script)                                                                    \
   V(Library)                                                                   \
   V(LibraryPrefix)                                                             \
   V(Code)                                                                      \
   V(Instructions)                                                              \
   V(PcDescriptors)                                                             \
+  V(LocalVarDescriptors)                                                       \
   V(ExceptionHandlers)                                                         \
   V(Context)                                                                   \
   V(ContextScope)                                                              \
   V(UnhandledException)                                                        \
   V(ApiError)                                                                  \
   V(Instance)                                                                  \
     V(Number)                                                                  \
       V(Integer)                                                               \
         V(Smi)                                                                 \
         V(Mint)                                                                \
@@ skipping 520 matching lines @@
 class RawCode : public RawObject {
   RAW_HEAP_OBJECT_IMPLEMENTATION(Code);
 
   RawObject** from() {
     return reinterpret_cast<RawObject**>(&ptr()->instructions_);
   }
   RawInstructions* instructions_;
   RawFunction* function_;
   RawExceptionHandlers* exception_handlers_;
   RawPcDescriptors* pc_descriptors_;
+  RawLocalVarDescriptors* var_descriptors_;
   // Ongoing redesign of inline caches may soon remove the need for 'ic_data_'.
   RawArray* ic_data_;  // Used to store IC stub data (see class ICData).
   RawObject** to() {
     return reinterpret_cast<RawObject**>(&ptr()->ic_data_);
   }
 
   intptr_t pointer_offsets_length_;
   // This cannot be boolean because of alignment issues on x64 architectures.
   intptr_t is_optimized_;
 
@@ skipping 18 matching lines @@
 class RawPcDescriptors : public RawObject {
   RAW_HEAP_OBJECT_IMPLEMENTATION(PcDescriptors);
 
   RawSmi* length_;  // Number of descriptors.
 
   // Variable length data follows here.
   intptr_t data_[0];
 };
 
 
+class RawLocalVarDescriptors : public RawObject {
+  RAW_HEAP_OBJECT_IMPLEMENTATION(LocalVarDescriptors);
+
+  struct VarInfo {
+    intptr_t index;      // Slot index on stack.
+    intptr_t begin_pos;  // Token position of scope start.
+    intptr_t end_pos;    // Token position of scope end.
+  };
+
+  intptr_t length_;  // Number of descriptors.
+  RawArray* names_;  // Array of [length_] variable names.
+
+  VarInfo data_[0];   // Variable info with [length_] entries.
+};
+
+
 class RawExceptionHandlers : public RawObject {
   RAW_HEAP_OBJECT_IMPLEMENTATION(ExceptionHandlers);
 
   RawSmi* length_;  // Number of exception handler entries.
 
   // Variable length data follows here.
   intptr_t data_[0];
 };
 
 
@@ skipping 276 matching lines @@
   intptr_t type_;  // Uninitialized, simple or complex.
   intptr_t flags_;  // Represents global/local, case insensitive, multiline.
 
   // Variable length data follows here.
   uint8_t data_[0];
 };
 
 }  // namespace dart
 
 #endif  // VM_RAW_OBJECT_H_