152 lines
3.3 KiB
C++
152 lines
3.3 KiB
C++
/*
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----
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This file is part of SECONDO.
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Copyright (C) 2004, University in Hagen, Department of Computer Science,
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Database Systems for New Applications.
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SECONDO is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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SECONDO is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with SECONDO; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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----
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August 8, 2000 RHG Added print command to show result of text to list translation.
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March 2002 Ulrich Telle Port to C++
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December 2004 M. Spiekermann. The error function was moved here and revised to
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report messages to a ~cmsg~ which will read in the ~SecondoInterface~. The Secondo
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parser is a bit messy because Scanner and Parser classes are not well separated.
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During implementation of ~xxerror~ this was confusing.
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*/
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#include "SecParser.h"
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#include <stdlib.h>
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#include <iostream>
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#include <sstream>
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#include <string>
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#include "NestedText.h"
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#include "LogMsg.h"
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using namespace std;
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#ifndef yyFlexLexer
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#define yyFlexLexer xxFlexLexer
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#include <FlexLexer.h>
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#endif
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string SecParser::error;
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extern string* yacc_outtext;
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extern int xxparse();
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extern int xxdebug;
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extern CMsg cmsg;
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static xxFlexLexer* lexPtr;
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#ifndef YY_CURRENT_BUFFER
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#define YY_CURRENT_BUFFER ( (yy_buffer_stack) \
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? (yy_buffer_stack)[(yy_buffer_stack_top)] \
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: NULL)
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#endif
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class Text2ListScan : public xxFlexLexer {
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public:
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Text2ListScan( istream* is ) : xxFlexLexer( is ) {};
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~Text2ListScan(){ deleteAllBuffers(); }
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int getLine() { return yylineno; }
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void SetDebug( const int value ) { yy_flex_debug = value; }
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void deleteAllBuffers(){
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#if YY_FLEX_MAJOR_VERSION >1 && \
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YY_FLEX_MINOR_VERSION > 4 && \
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YY_FLEX_SUBMINOR_VERSION > 32
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while(YY_CURRENT_BUFFER){
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yy_delete_buffer(YY_CURRENT_BUFFER);
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}
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if(yy_buffer_stack){
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free(yy_buffer_stack);
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yy_buffer_stack=0;
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}
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#endif
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}
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};
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int xxlex()
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{
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return (lexPtr->yylex());
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}
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void xxerror( const char* s )
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{
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stringstream ss;
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ss << "SECONDO Parser: " << s
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<< " in line "
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<< dynamic_cast<Text2ListScan*>(lexPtr)->getLine()
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<< " at symbol '"
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<< dynamic_cast<Text2ListScan*>(lexPtr)->YYText() << "'"
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<< endl;
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SecParser::error = ss.str();
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cmsg.error() << SecParser::error;
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cmsg.send();
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}
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SecParser::SecParser()
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{
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}
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SecParser::~SecParser()
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{
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}
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int
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SecParser::Text2List( const string& inputString, string& outputString )
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{
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istringstream is( inputString );
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outputString = "";
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error = "";
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Text2ListScan lex( &is );
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// this must be a global variable, where is it defined?
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lexPtr = &lex;
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yacc_outtext = &outputString;
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NestedText::ReleaseStorage();
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if ( RTFlag::isActive("SecondoScanner:Debug") ) {
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lex.SetDebug(1);
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} else {
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lex.SetDebug(0);
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}
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if ( RTFlag::isActive("SecondoParser:Debug") ) {
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xxdebug = 1;
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} else {
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xxdebug = 0;
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}
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return ( xxparse() );
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}
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