aparser.hpp
上传用户:yhdzpy8989
上传日期:2007-06-13
资源大小:13604k
文件大小:7k
- /*
- * ===========================================================================
- * PRODUCTION $Log: aparser.hpp,v $
- * PRODUCTION Revision 1000.0 2003/10/29 17:33:40 gouriano
- * PRODUCTION PRODUCTION: IMPORTED [ORIGINAL] Dev-tree R1.8
- * PRODUCTION
- * ===========================================================================
- */
- #ifndef ABSTRACT_PARSER_HPP
- #define ABSTRACT_PARSER_HPP
- /* $Id: aparser.hpp,v 1000.0 2003/10/29 17:33:40 gouriano Exp $
- * ===========================================================================
- *
- * PUBLIC DOMAIN NOTICE
- * National Center for Biotechnology Information
- *
- * This software/database is a "United States Government Work" under the
- * terms of the United States Copyright Act. It was written as part of
- * the author's official duties as a United States Government employee and
- * thus cannot be copyrighted. This software/database is freely available
- * to the public for use. The National Library of Medicine and the U.S.
- * Government have not placed any restriction on its use or reproduction.
- *
- * Although all reasonable efforts have been taken to ensure the accuracy
- * and reliability of the software and data, the NLM and the U.S.
- * Government do not and cannot warrant the performance or results that
- * may be obtained by using this software or data. The NLM and the U.S.
- * Government disclaim all warranties, express or implied, including
- * warranties of performance, merchantability or fitness for any particular
- * purpose.
- *
- * Please cite the author in any work or product based on this material.
- *
- * ===========================================================================
- *
- * Author: Eugene Vasilchenko
- *
- * File Description:
- * Abstract parser
- *
- * ---------------------------------------------------------------------------
- * $Log: aparser.hpp,v $
- * Revision 1000.0 2003/10/29 17:33:40 gouriano
- * PRODUCTION: IMPORTED [ORIGINAL] Dev-tree R1.8
- *
- * Revision 1.8 2002/10/18 14:32:17 gouriano
- * added possibility to replace lexer "on the fly"
- *
- * Revision 1.7 2001/05/17 15:00:42 lavr
- * Typos corrected
- *
- * Revision 1.6 2000/11/29 17:42:29 vasilche
- * Added CComment class for storing/printing ASN.1/XML module comments.
- * Added srcutil.hpp file to reduce file dependency.
- *
- * Revision 1.5 2000/11/15 20:34:40 vasilche
- * Added user comments to ENUMERATED types.
- * Added storing of user comments to ASN.1 module definition.
- *
- * Revision 1.4 2000/11/14 21:41:12 vasilche
- * Added preserving of ASN.1 definition comments.
- *
- * Revision 1.3 2000/08/25 15:58:45 vasilche
- * Renamed directory tool -> datatool.
- *
- * Revision 1.2 2000/04/07 19:26:06 vasilche
- * Added namespace support to datatool.
- * By default with argument -oR datatool will generate objects in namespace
- * NCBI_NS_NCBI::objects (aka ncbi::objects).
- * Datatool's classes also moved to NCBI namespace.
- *
- * Revision 1.1 2000/02/01 21:46:13 vasilche
- * Added CGeneratedChoiceTypeInfo for generated choice classes.
- * Removed CMemberInfo subclasses.
- * Added support for DEFAULT/OPTIONAL members.
- * Changed class generation.
- * Moved datatool headers to include/internal/serial/tool.
- *
- * Revision 1.4 1999/11/15 19:36:12 vasilche
- * Fixed warnings on GCC
- *
- * ===========================================================================
- */
- #include <corelib/ncbistd.hpp>
- #include <serial/datatool/alexer.hpp>
- #include <serial/datatool/atoken.hpp>
- #include <list>
- BEGIN_NCBI_SCOPE
- class CComments;
- class AbstractParser {
- public:
- AbstractParser(AbstractLexer& lexer);
- virtual ~AbstractParser(void);
- virtual void ParseError(const char* error, const char* expected,
- const AbstractToken& token);
- void ParseError(const char* error, const char* expected)
- {
- ParseError(error, expected, NextToken());
- }
- void ParseError(const char* expected)
- {
- ParseError("", expected);
- }
- string Location(void) const;
- AbstractLexer& Lexer(void)
- {
- return *m_Lexer;
- }
- const AbstractLexer& Lexer(void) const
- {
- return *m_Lexer;
- }
- const AbstractToken& NextToken(void) const
- {
- return m_Lexer->NextToken();
- }
- TToken Next(void) const
- {
- return NextToken().GetToken();
- }
- int NextTokenLine(void) const
- {
- return NextToken().GetLine();
- }
- int LastTokenLine(void) const
- {
- return Lexer().LastTokenLine();
- }
- void Consume(void)
- {
- Lexer().Consume();
- }
- const string& ConsumeAndValue(void)
- {
- return Lexer().ConsumeAndValue();
- }
- bool Check(TToken token)
- {
- return Next() == token;
- }
- void Expect(TToken token, const char* expected)
- {
- if ( !Check(token) )
- ParseError(expected);
- }
- bool ConsumeIf(TToken token)
- {
- if ( !Check(token) )
- return false;
- Consume();
- return true;
- }
- void Consume(TToken token, const char* expected)
- {
- Expect(token, expected);
- Consume();
- }
- const string& ValueOf(TToken token, const char* expected)
- {
- Expect(token, expected);
- return ConsumeAndValue();
- }
- bool CheckSymbol(char symbol)
- {
- return Lexer().CheckSymbol(symbol);
- }
- void ExpectSymbol(char symbol)
- {
- if ( !CheckSymbol(symbol) ) {
- char expected[2] = { symbol, ' ' };
- ParseError(expected);
- }
- }
- bool ConsumeIfSymbol(char symbol)
- {
- if ( !CheckSymbol(symbol) )
- return false;
- Consume();
- return true;
- }
- void ConsumeSymbol(char symbol)
- {
- ExpectSymbol(symbol);
- Consume();
- }
- char CheckSymbols(char symbol1, char symbol2)
- {
- if ( Next() == T_SYMBOL ) {
- char symbol = NextToken().GetSymbol();
- if ( symbol == symbol1 || symbol == symbol2 )
- return symbol;
- }
- return ' ';
- }
-
- void CopyComments(CComments& comments)
- {
- Lexer().FlushCommentsTo(comments);
- }
- enum {
- eNoFetchNext = 1,
- eCombineNext = 2
- };
- void CopyLineComment(int line, CComments& comments, int flags = 0);
- protected:
- void SetLexer(AbstractLexer* lexer)
- {
- m_Lexer = lexer;
- }
- private:
- AbstractLexer* m_Lexer;
- };
- END_NCBI_SCOPE
- #endif