summaryrefslogtreecommitdiffstats
path: root/storage/mozStorageStatementJSHelper.h
blob: 0061d7d6a02ba70806fa957e6fb5b82496f24ee3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef MOZSTORAGESTATEMENTJSHELPER_H
#define MOZSTORAGESTATEMENTJSHELPER_H

#include "nsIXPCScriptable.h"

class Statement;

namespace mozilla {
namespace storage {

class StatementParams;
class StatementRow;

class StatementJSHelper : public nsIXPCScriptable {
 public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIXPCSCRIPTABLE

 private:
  nsresult getRow(Statement*, JSContext*, JSObject*, JS::Value*);
  nsresult getParams(Statement*, JSContext*, JSObject*, JS::Value*);
};

/**
 * Wrappers used to clean up the references JS helpers hold to the statement.
 * For cycle-avoidance reasons they do not hold reference-counted references,
 * so it is important we do this.
 */

class StatementParamsHolder final : public nsISupports {
 public:
  NS_DECL_ISUPPORTS

  explicit StatementParamsHolder(StatementParams* aParams) : mParams(aParams) {}

  StatementParams* Get() const {
    MOZ_ASSERT(mParams);
    return mParams;
  }

 private:
  virtual ~StatementParamsHolder();

  RefPtr<StatementParams> mParams;
};

class StatementRowHolder final : public nsISupports {
 public:
  NS_DECL_ISUPPORTS

  explicit StatementRowHolder(StatementRow* aRow) : mRow(aRow) {}

  StatementRow* Get() const {
    MOZ_ASSERT(mRow);
    return mRow;
  }

 private:
  virtual ~StatementRowHolder();

  RefPtr<StatementRow> mRow;
};

}  // namespace storage
}  // namespace mozilla

#endif  // MOZSTORAGESTATEMENTJSHELPER_H