1 files changed, 131 insertions, 0 deletions
diff --git a/dom/xslt/xpath/txExprResult.h b/dom/xslt/xpath/txExprResult.h
new file mode 100644
index 000000000..73e2f0772
--- /dev/null
+++ b/dom/xslt/xpath/txExprResult.h
@@ -0,0 +1,131 @@
+/* -*- 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 TRANSFRMX_EXPRRESULT_H
+#define TRANSFRMX_EXPRRESULT_H
+
+#include "nsString.h"
+#include "nsAutoPtr.h"
+#include "txCore.h"
+#include "txResultRecycler.h"
+
+/*
+ * ExprResult
+ *
+ * Classes Represented:
+ * BooleanResult, ExprResult, NumberResult, StringResult
+ *
+ * Note: for NodeSet, see NodeSet.h
+*/
+
+class txAExprResult
+{
+public:
+    friend class txResultRecycler;
+
+    // Update txLiteralExpr::getReturnType and sTypes in txEXSLTFunctions.cpp if
+    // this enum is changed.
+    enum ResultType {
+        NODESET = 0,
+        BOOLEAN,
+        NUMBER,
+        STRING,
+        RESULT_TREE_FRAGMENT
+    };
+
+    explicit txAExprResult(txResultRecycler* aRecycler) : mRecycler(aRecycler)
+    {
+    }
+    virtual ~txAExprResult()
+    {
+    }
+
+    void AddRef()
+    {
+        ++mRefCnt;
+        NS_LOG_ADDREF(this, mRefCnt, "txAExprResult", sizeof(*this));
+    }
+    
+    void Release(); // Implemented in txResultRecycler.cpp
+
+    /**
+     * Returns the type of ExprResult represented
+     * @return the type of ExprResult represented
+    **/
+    virtual short getResultType()      = 0;
+
+    /**
+     * Creates a String representation of this ExprResult
+     * @param aResult the destination string to append the String
+     *                representation to.
+    **/
+    virtual void stringValue(nsString& aResult) = 0;
+
+    /**
+     * Returns a pointer to the stringvalue if possible. Otherwise null is
+     * returned.
+     */
+    virtual const nsString* stringValuePointer() = 0;
+
+    /**
+     * Converts this ExprResult to a Boolean (bool) value
+     * @return the Boolean value
+    **/
+    virtual bool booleanValue()          = 0;
+
+    /**
+     * Converts this ExprResult to a Number (double) value
+     * @return the Number value
+    **/
+    virtual double numberValue()          = 0;
+
+private:
+    nsAutoRefCnt mRefCnt;
+    RefPtr<txResultRecycler> mRecycler;
+};
+
+#define TX_DECL_EXPRRESULT                                        \
+    virtual short getResultType();                                \
+    virtual void stringValue(nsString& aString);                  \
+    virtual const nsString* stringValuePointer();                 \
+    virtual bool booleanValue();                                \
+    virtual double numberValue();                                 \
+
+
+class BooleanResult : public txAExprResult {
+
+public:
+    explicit BooleanResult(bool aValue);
+
+    TX_DECL_EXPRRESULT
+
+private:
+    bool value;
+};
+
+class NumberResult : public txAExprResult {
+
+public:
+    NumberResult(double aValue, txResultRecycler* aRecycler);
+
+    TX_DECL_EXPRRESULT
+
+    double value;
+
+};
+
+
+class StringResult : public txAExprResult {
+public:
+    explicit StringResult(txResultRecycler* aRecycler);
+    StringResult(const nsAString& aValue, txResultRecycler* aRecycler);
+
+    TX_DECL_EXPRRESULT
+
+    nsString mValue;
+};
+
+#endif
+