From 7e2e6ca176afbde66e1f5ae147470fd229da97de Mon Sep 17 00:00:00 2001 From: schodet Date: Wed, 8 Feb 2006 23:02:23 +0000 Subject: - restructuration du parser - création de ConfigParser - amélioration du report d'erreur - passage en 2006 --- i/marvin/src/config/config_parser.cc | 142 +++++++++++++++++++++++++++++++++++ 1 file changed, 142 insertions(+) create mode 100644 i/marvin/src/config/config_parser.cc (limited to 'i/marvin/src/config/config_parser.cc') diff --git a/i/marvin/src/config/config_parser.cc b/i/marvin/src/config/config_parser.cc new file mode 100644 index 0000000..ee0a6e3 --- /dev/null +++ b/i/marvin/src/config/config_parser.cc @@ -0,0 +1,142 @@ +// config_parser.cc +// marvin - programme du robot 2006. {{{ +// +// Copyright (C) 2006 Nicolas Schodet +// +// Robot APB Team/Efrei 2006. +// Web: http://assos.efrei.fr/robot/ +// Email: robot AT efrei DOT fr +// +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation; either version 2 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +// +// }}} +#include "config_parser.hh" +#include "config.hh" + +#include "parser.hh" +#include "lexer.hh" + +#include +#include + +int yyparse (void *); + +/// Constructeur. +ConfigParser::ConfigParser (ConfigData &configData) + : configData_ (configData) +{ +} + +/// Lance le parseur sur un fichier. +void +ConfigParser::parseFile (const std::string &file) +{ + FILE *f; + f = fopen (file.c_str (), "r"); + if (!f) + throw std::runtime_error ("can not open file \"" + file + "\""); + try + { + // Crée un scanner, initialise son tampon d'entré, puis parse. + yyscan_t scanner; + YY_BUFFER_STATE buf; + Extra e (configData_, *this, true); + yylex_init (&scanner); + yyset_extra (&e, scanner); + buf = yy_create_buffer (f, YY_READ_BUF_SIZE, scanner); + yy_switch_to_buffer (buf, scanner); + int ret = yyparse (scanner); + yy_delete_buffer (buf, scanner); + yylex_destroy (scanner); + if (ret) + { + if (e.errorValid_) + throw std::runtime_error (e.error_); + else + throw std::runtime_error ("parse error"); + } + } + catch (const std::runtime_error &e) + { + fclose (f); + throw std::runtime_error ("in file \"" + file + "\": " + e.what ()); + } + fclose (f); +} + +/// Lance le parseur sur une chaîne. +void +ConfigParser::parseString (const std::string &s) +{ + try + { + // Crée un scanner, initialise son tampon d'entré, puis parse. + yyscan_t scanner; + YY_BUFFER_STATE buf; + Extra e (configData_, *this, false); + yylex_init (&scanner); + yyset_extra (&e, scanner); + buf = yy_scan_bytes (s.data (), s.size (), scanner); + int ret = yyparse (scanner); + yy_delete_buffer (buf, scanner); + yylex_destroy (scanner); + if (ret) + { + if (e.errorValid_) + throw std::runtime_error (e.error_); + else + throw std::runtime_error ("parse error"); + } + } + catch (const std::runtime_error &e) + { + throw std::runtime_error ("in config string \"" + s + "\": " + + e.what ()); + } +} + +/// Constructeur pour initialiser les références. +ConfigParser::Extra::Extra (ConfigData &configData_, ConfigParser + &configParser_, bool useLine) + : configData (configData_), configParser (configParser_), + line (1), errorValid_ (false), useLine_ (useLine) +{ +} + +/// Recueille l'erreur de bison. +void +ConfigParser::Extra::error (const std::string &e) +{ + if (!errorValid_) + { + error_ = e; + errorValid_ = true; + if (useLine_) + { + std::stringstream os; + os << line; + error_ += ", line "; + error_ += os.str (); + } + } +} + +/* Shut up warning for this wrongly declared static function. */ +static int +yy_init_globals (yyscan_t yyscanner) +{ + return yy_init_globals (yyscanner); +} + -- cgit v1.2.3