Add m-esr52 at 52.6.0

1 files changed, 113 insertions, 0 deletions

diff --git a/storage/mozStorageBindingParams.h b/storage/mozStorageBindingParams.h
new file mode 100644
index 0000000000..86d00b02b6
--- /dev/null
+++ b/storage/mozStorageBindingParams.h
@@ -0,0 +1,113 @@
+/* -*- 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 mozStorageBindingParams_h
+#define mozStorageBindingParams_h
+
+#include "nsCOMArray.h"
+#include "nsIVariant.h"
+#include "nsInterfaceHashtable.h"
+
+#include "mozStorageBindingParamsArray.h"
+#include "mozStorageStatement.h"
+#include "mozStorageAsyncStatement.h"
+#include "Variant.h"
+
+#include "mozIStorageBindingParams.h"
+#include "IStorageBindingParamsInternal.h"
+
+namespace mozilla {
+namespace storage {
+
+class BindingParams : public mozIStorageBindingParams
+                    , public IStorageBindingParamsInternal
+{
+public:
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_MOZISTORAGEBINDINGPARAMS
+  NS_DECL_ISTORAGEBINDINGPARAMSINTERNAL
+
+  /**
+   * Locks the parameters and prevents further modification to it (such as
+   * binding more elements to it).
+   */
+  void lock();
+
+  /**
+   * Unlocks the parameters and allows modification to it again.
+   *
+   * @param aOwningStatement
+   *        The statement that owns us.  We cleared this when we were locked,
+   *        and our invariant requires us to have this, so you need to tell us
+   *        again.
+   */
+  void unlock(Statement *aOwningStatement);
+
+  /**
+   * @returns the pointer to the owning BindingParamsArray.  Used by a
+   *          BindingParamsArray to verify that we belong to it when added.
+   */
+  const mozIStorageBindingParamsArray *getOwner() const;
+
+  BindingParams(mozIStorageBindingParamsArray *aOwningArray,
+                Statement *aOwningStatement);
+protected:
+  virtual ~BindingParams() {}
+
+  explicit BindingParams(mozIStorageBindingParamsArray *aOwningArray);
+  // Note that this is managed as a sparse array, so particular caution should
+  // be used for out-of-bounds usage.
+  nsTArray<RefPtr<Variant_base> > mParameters;
+  bool mLocked;
+
+private:
+
+  /**
+   * Track the BindingParamsArray that created us until we are added to it.
+   * (Once we are added we are locked and no one needs to look up our owner.)
+   * Ref-counted since there is no invariant that guarantees it stays alive
+   * otherwise.  This keeps mOwningStatement alive for us too since the array
+   * also holds a reference.
+   */
+  nsCOMPtr<mozIStorageBindingParamsArray> mOwningArray;
+  /**
+   * Used in the synchronous binding case to map parameter names to indices.
+   * Not reference-counted because this is only non-null as long as mOwningArray
+   * is non-null and mOwningArray also holds a statement reference.
+   */
+  Statement *mOwningStatement;
+  uint32_t mParamCount;
+};
+
+/**
+ * Adds late resolution of named parameters so they don't get resolved until we
+ * try and bind the parameters on the async thread.  We also stop checking
+ * parameter indices for being too big since we just just don't know how many
+ * there are.
+ *
+ * We support *either* binding by name or binding by index.  Trying to do both
+ * results in only binding by name at sqlite3_stmt bind time.
+ */
+class AsyncBindingParams : public BindingParams
+{
+public:
+  NS_IMETHOD BindByName(const nsACString & aName,
+                                      nsIVariant *aValue);
+  NS_IMETHOD BindByIndex(uint32_t aIndex, nsIVariant *aValue);
+
+  virtual already_AddRefed<mozIStorageError> bind(sqlite3_stmt * aStatement);
+
+  explicit AsyncBindingParams(mozIStorageBindingParamsArray *aOwningArray);
+  virtual ~AsyncBindingParams() {}
+
+private:
+  nsInterfaceHashtable<nsCStringHashKey, nsIVariant> mNamedParameters;
+};
+
+} // namespace storage
+} // namespace mozilla
+
+#endif // mozStorageBindingParams_h