// Copyright 2008, Google Inc.
//
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// modification, are permitted provided that the following conditions are met:
//
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//     this list of conditions and the following disclaimer.
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//     used to endorse or promote products derived from this software without
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#ifndef GEARS_BLOB_BLOB_H__
#define GEARS_BLOB_BLOB_H__

#include "gears/base/common/base_class.h"
#include "gears/base/common/common.h"
#include "gears/base/common/scoped_refptr.h"
#include "gears/blob/blob_interface.h"

class GearsBlob : public ModuleImplBaseClass {
 public:
  static const std::string kModuleName;

  GearsBlob()
      : ModuleImplBaseClass(kModuleName),
        contents_(new EmptyBlob()) {}

  // IN: nothing
  // OUT: int64
  void GetLength(JsCallContext *context);

#ifdef DEBUG
  // Returns whether or not this Blob has identical contents to another Blob.
  // IN: GearsBlob anotherBlob
  // OUT: bool
  void HasSameContentsAs(JsCallContext *context);
#endif

  // IN: int64 offset, optional int64 length
  // OUT: GearsBlob
  void Slice(JsCallContext *context);

  void GetContents(scoped_refptr<BlobInterface> *out) {
    *out = contents_;
  }

  void Reset(BlobInterface *blob) {
    contents_.reset(blob);
  }

  virtual MarshaledModule *AsMarshaledModule();

 private:
  scoped_refptr<BlobInterface> contents_;

  DISALLOW_EVIL_CONSTRUCTORS(GearsBlob);
};

#endif  // GEARS_BLOB_BLOB_H__