First part of inspecting local variables

runtime/vm/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_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "vm/assert.h"
 #include "vm/dart.h"
 #include "vm/globals.h"
@@ skipping 120 matching lines @@
     kInstantiatedTypeArgumentsClass,
     kFunctionClass,
     kFieldClass,
     kTokenStreamClass,
     kScriptClass,
     kLibraryClass,
     kLibraryPrefixClass,
     kCodeClass,
     kInstructionsClass,
     kPcDescriptorsClass,
+    kLocalVarDescriptorsClass,
     kExceptionHandlersClass,
     kContextClass,
     kContextScopeClass,
     kApiErrorClass,
     kMaxId,
     kInvalidIndex = -1,
   };
 
   virtual ~Object() { }
 
@@ skipping 98 matching lines @@
   }
   static RawClass* function_class() { return function_class_; }
   static RawClass* field_class() { return field_class_; }
   static RawClass* token_stream_class() { return token_stream_class_; }
   static RawClass* script_class() { return script_class_; }
   static RawClass* library_class() { return library_class_; }
   static RawClass* library_prefix_class() { return library_prefix_class_; }
   static RawClass* code_class() { return code_class_; }
   static RawClass* instructions_class() { return instructions_class_; }
   static RawClass* pc_descriptors_class() { return pc_descriptors_class_; }
+  static RawClass* var_descriptors_class() { return var_descriptors_class_; }
   static RawClass* exception_handlers_class() {
     return exception_handlers_class_;
   }
   static RawClass* context_class() { return context_class_; }
   static RawClass* context_scope_class() { return context_scope_class_; }
   static RawClass* api_error_class() { return api_error_class_; }
 
   static int GetSingletonClassIndex(const RawClass* raw_class);
   static RawClass* GetSingletonClass(int index);
   static const char* GetSingletonClassName(int index);
@@ skipping 85 matching lines @@
   static RawClass* instantiated_type_arguments_class_;  // Class of Inst..ments.
   static RawClass* function_class_;  // Class of the Function vm object.
   static RawClass* field_class_;  // Class of the Field vm object.
   static RawClass* token_stream_class_;  // Class of the TokenStream vm object.
   static RawClass* script_class_;  // Class of the Script vm object.
   static RawClass* library_class_;  // Class of the Library vm object.
   static RawClass* library_prefix_class_;  // Class of Library prefix vm object.
   static RawClass* code_class_;  // Class of the Code vm object.
   static RawClass* instructions_class_;  // Class of the Instructions vm object.
   static RawClass* pc_descriptors_class_;  // Class of PcDescriptors vm object.
+  static RawClass* var_descriptors_class_;  // Class of LocalVarDescriptors.
   static RawClass* exception_handlers_class_;  // Class of ExceptionHandlers.
   static RawClass* context_class_;  // Class of the Context vm object.
   static RawClass* context_scope_class_;  // Class of ContextScope vm object.
   static RawClass* api_error_class_;  // Class of ApiError.
 
   friend class Class;
   friend class SnapshotReader;
 
   // Disallow allocation.
   void* operator new(size_t size);
@@ skipping 1361 matching lines @@
   // the RawInstruction and RawCode objects, sets up the pointer offsets
   // and links the two in a GC safe manner.
   static RawInstructions* New(intptr_t size);
 
   HEAP_OBJECT_IMPLEMENTATION(Instructions, Object);
   friend class Code;
   friend class Class;
 };
 
 
+class LocalVarDescriptors : public Object {
+ public:
+  intptr_t Length() const;
+
+  RawString* GetName(intptr_t var_index) const;
+  void GetRange(intptr_t var_index,
+                intptr_t* begin_pos, intptr_t* end_pos) const;
+
+  void SetVar(intptr_t var_index,
+              const String& name,
+              intptr_t stack_slot,
+              intptr_t begin_pos,
+              intptr_t end_pos) const;
+
+  static intptr_t InstanceSize() {
+    ASSERT(sizeof(RawLocalVarDescriptors) ==
+        OFFSET_OF(RawLocalVarDescriptors, data_));
+    return 0;
+  }
+  static intptr_t InstanceSize(intptr_t len) {
+    return RoundedAllocationSize(
+        sizeof(RawLocalVarDescriptors) +
+        (len * sizeof(RawLocalVarDescriptors::VarInfo)));
+  }
+
+  static RawLocalVarDescriptors* New(intptr_t num_variables);
+
+ private:
+  HEAP_OBJECT_IMPLEMENTATION(LocalVarDescriptors, Object);
+  friend class Class;
+};
+
+
 class PcDescriptors : public Object {
  public:
   enum Kind {
     kDeopt = 0,  // Deoptimization cotinuation point.
     kPatchCode,  // Buffer for patching code entry.
     kIcCall,     // IC call.
     kOther
   };
 
   intptr_t Length() const;
@@ skipping 144 matching lines @@
     return instr.size();
   }
 
   RawPcDescriptors* pc_descriptors() const {
     return raw_ptr()->pc_descriptors_;
   }
   void set_pc_descriptors(const PcDescriptors& descriptors) const {
     StorePointer(&raw_ptr()->pc_descriptors_, descriptors.raw());
   }
 
+  RawLocalVarDescriptors* var_descriptors() const {
+    return raw_ptr()->var_descriptors_;
+  }
+  void set_var_descriptors(const LocalVarDescriptors& value) const {
+    StorePointer(&raw_ptr()->var_descriptors_, value.raw());
+  }
+
   // See class ICData for interpretation of the 'ic_data_' array.
   RawArray* ic_data() const;
   void set_ic_data(const Array& ic_data) const;
 
   RawExceptionHandlers* exception_handlers() const {
     return raw_ptr()->exception_handlers_;
   }
   void set_exception_handlers(const ExceptionHandlers& handlers) const {
     StorePointer(&raw_ptr()->exception_handlers_, handlers.raw());
   }
@@ skipping 1385 matching lines @@
 }
 
 
 void Context::SetAt(intptr_t index, const Instance& value) const {
   StorePointer(InstanceAddr(index), value.raw());
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_