mirror of
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102 lines
3.4 KiB
C++
102 lines
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla XForms support.
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*
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* The Initial Developer of the Original Code is
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* Novell, Inc.
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* Portions created by the Initial Developer are Copyright (C) 2004
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Allan Beaufour <abeaufour@novell.com>
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* David Landwehr <dlandwehr@novell.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef __NSXFORMSXPATHSCANNER_H__
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#define __NSXFORMSXPATHSCANNER_H__
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#include "nsString.h"
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/**
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* The XPath Expression scanner, used by nsXFormsXPathParser.
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*
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* @note Should be reimplemented and moved to Transformiix
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*
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*/
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class nsXFormsXPathScanner
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{
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public:
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enum XPATHTOKEN {
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LPARAN, RPARAN, LBRACK, RBRACK, AT, COMMA,
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COLONCOLON, DOT, DOTDOT, SLASH, SLASHSLASH, UNION,
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PLUS, MINUS, EQUAL, NOTEQUAL, LEQUAL, LESS, GEQUAL,
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GREATER, MULTIPLYOPERATOR, WHITESPACE, NUMBER,
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LITERAL, AND, OR, MOD, DIV, NODE, PI, TEXT, COMMENT,
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FUNCTIONNAME, NCNAME, QNAME, VARIABLE, STAR, ANCESTOR,
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ANCESTOR_OR_SELF, ATTRIBUTE, CHILD, DESCENDANT,
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DESCENDANT_OR_SELF, FOLLOWING, FOLLOWING_SIBLING, NAMESPACE,
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PARENT, PRECEDING, PRECEDING_SIBLING, SELF, XPATHEOF, ERRORXPATHTOKEN, NONE
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};
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private:
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XPATHTOKEN mState, mLast;
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nsAutoString mExpression;
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PRInt32 mOffset, mLength, mSize;
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PRUnichar PopChar();
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PRUnichar PeekChar();
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PRUnichar PeekChar(PRInt32 offset);
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PRUnichar NextNonWhite();
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PRInt32 GetOffsetForNonWhite();
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PRBool SolveDiambiguate();
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XPATHTOKEN SolveStar();
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XPATHTOKEN ScanNumber();
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XPATHTOKEN ScanVariable();
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XPATHTOKEN ScanWhitespace();
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XPATHTOKEN ScanLiteral();
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XPATHTOKEN ScanQName();
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XPATHTOKEN ScanNCName();
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public:
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nsXFormsXPathScanner();
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nsXFormsXPathScanner(const nsAString& aExpression);
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~nsXFormsXPathScanner();
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void Init(const nsAString& aExpression);
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XPATHTOKEN NextToken();
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PRInt32 Offset();
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PRInt32 Length();
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void Image(PRInt32& aOffset, PRInt32& aLength);
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PRBool HasMoreTokens();
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nsAString& Expression();
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};
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#endif
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