summaryrefslogtreecommitdiffstats
path: root/dom/xslt/xpath/txResultRecycler.h
diff options
context:
space:
mode:
authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /dom/xslt/xpath/txResultRecycler.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
downloadUXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.lz
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.xz
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.zip
Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/xslt/xpath/txResultRecycler.h')
-rw-r--r--dom/xslt/xpath/txResultRecycler.h80
1 files changed, 80 insertions, 0 deletions
diff --git a/dom/xslt/xpath/txResultRecycler.h b/dom/xslt/xpath/txResultRecycler.h
new file mode 100644
index 000000000..eec7d75e8
--- /dev/null
+++ b/dom/xslt/xpath/txResultRecycler.h
@@ -0,0 +1,80 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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 txResultRecycler_h__
+#define txResultRecycler_h__
+
+#include "nsCOMPtr.h"
+#include "nsAutoPtr.h"
+#include "txStack.h"
+
+class txAExprResult;
+class StringResult;
+class txNodeSet;
+class txXPathNode;
+class NumberResult;
+class BooleanResult;
+
+class txResultRecycler
+{
+public:
+ txResultRecycler();
+ ~txResultRecycler();
+
+ void AddRef()
+ {
+ ++mRefCnt;
+ NS_LOG_ADDREF(this, mRefCnt, "txResultRecycler", sizeof(*this));
+ }
+ void Release()
+ {
+ --mRefCnt;
+ NS_LOG_RELEASE(this, mRefCnt, "txResultRecycler");
+ if (mRefCnt == 0) {
+ mRefCnt = 1; //stabilize
+ delete this;
+ }
+ }
+
+ /**
+ * Returns an txAExprResult to this recycler for reuse.
+ * @param aResult result to recycle
+ */
+ void recycle(txAExprResult* aResult);
+
+ /**
+ * Functions to return results that will be fully used by the caller.
+ * Returns nullptr on out-of-memory and an inited result otherwise.
+ */
+ nsresult getStringResult(StringResult** aResult);
+ nsresult getStringResult(const nsAString& aValue, txAExprResult** aResult);
+ nsresult getNodeSet(txNodeSet** aResult);
+ nsresult getNodeSet(txNodeSet* aNodeSet, txNodeSet** aResult);
+ nsresult getNodeSet(const txXPathNode& aNode, txAExprResult** aResult);
+ nsresult getNumberResult(double aValue, txAExprResult** aResult);
+
+ /**
+ * Functions to return a txAExprResult that is shared across several
+ * clients and must not be modified. Never returns nullptr.
+ */
+ void getEmptyStringResult(txAExprResult** aResult);
+ void getBoolResult(bool aValue, txAExprResult** aResult);
+
+ /**
+ * Functions that return non-shared resultsobjects
+ */
+ nsresult getNonSharedNodeSet(txNodeSet* aNodeSet, txNodeSet** aResult);
+
+private:
+ nsAutoRefCnt mRefCnt;
+ txStack mStringResults;
+ txStack mNodeSetResults;
+ txStack mNumberResults;
+ RefPtr<StringResult> mEmptyStringResult;
+ RefPtr<BooleanResult> mTrueResult;
+ RefPtr<BooleanResult> mFalseResult;
+};
+
+#endif //txResultRecycler_h__