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-rw-r--r--dom/xslt/xpath/txExprResult.h131
1 files changed, 131 insertions, 0 deletions
diff --git a/dom/xslt/xpath/txExprResult.h b/dom/xslt/xpath/txExprResult.h
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+/* -*- 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
+