| /* |
| * Copyright 2005 Maksim Orlovich <maksim@kde.org> |
| * Copyright (C) 2006, 2013 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #pragma once |
| |
| #include "ExceptionOr.h" |
| #include "XPathPredicate.h" |
| |
| union YYSTYPE; |
| |
| namespace WebCore { |
| |
| class XPathNSResolver; |
| |
| namespace XPath { |
| |
| class Parser { |
| WTF_MAKE_NONCOPYABLE(Parser); |
| public: |
| static ExceptionOr<std::unique_ptr<Expression>> parseStatement(const String& statement, RefPtr<XPathNSResolver>&&); |
| |
| int lex(YYSTYPE&); |
| bool expandQualifiedName(const String& qualifiedName, String& localName, String& namespaceURI); |
| void setParseResult(std::unique_ptr<Expression>&& expression) { m_result = WTFMove(expression); } |
| |
| private: |
| Parser(const String&, RefPtr<XPathNSResolver>&&); |
| |
| struct Token; |
| |
| bool isBinaryOperatorContext() const; |
| |
| void skipWS(); |
| Token makeTokenAndAdvance(int type, int advance = 1); |
| Token makeTokenAndAdvance(int type, NumericOp::Opcode, int advance = 1); |
| Token makeTokenAndAdvance(int type, EqTestOp::Opcode, int advance = 1); |
| char peekAheadHelper(); |
| char peekCurHelper(); |
| |
| Token lexString(); |
| Token lexNumber(); |
| bool lexNCName(String&); |
| bool lexQName(String&); |
| |
| Token nextToken(); |
| Token nextTokenInternal(); |
| |
| const String& m_data; |
| RefPtr<XPathNSResolver> m_resolver; |
| |
| unsigned m_nextPos { 0 }; |
| int m_lastTokenType { 0 }; |
| |
| std::unique_ptr<Expression> m_result; |
| bool m_sawNamespaceError { false }; |
| }; |
| |
| } } |