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32 lines
960 B
C
32 lines
960 B
C
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef txXPathOptimizer_h__
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#define txXPathOptimizer_h__
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#include "txCore.h"
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class Expr;
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class txXPathOptimizer
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{
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public:
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/**
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* Optimize the given expression.
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* @param aInExpr Expression to optimize.
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* @param aOutExpr Resulting expression, null if optimization didn't
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* result in a new expression.
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*/
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nsresult optimize(Expr* aInExpr, Expr** aOutExpr);
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private:
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// Helper methods for optimizing specific classes
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nsresult optimizeStep(Expr* aInExpr, Expr** aOutExpr);
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nsresult optimizePath(Expr* aInExpr, Expr** aOutExpr);
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nsresult optimizeUnion(Expr* aInExpr, Expr** aOutExpr);
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};
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#endif
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