From 8f486613be58ced269db1d437e560c16558604e8 Mon Sep 17 00:00:00 2001 From: becquet Date: Thu, 10 May 2007 18:49:20 +0000 Subject: Création de chuck, le programme du robot 2007. --- i/chuck/src/parser/parser.cc | 189 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 189 insertions(+) create mode 100644 i/chuck/src/parser/parser.cc (limited to 'i/chuck/src/parser/parser.cc') diff --git a/i/chuck/src/parser/parser.cc b/i/chuck/src/parser/parser.cc new file mode 100644 index 0000000..4981474 --- /dev/null +++ b/i/chuck/src/parser/parser.cc @@ -0,0 +1,189 @@ +// 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 "parser.hh" + +#include "yyparser.hh" +#include "yylexer.hh" + +#include +#include + +int yyparse (void *); + +/// Constructeur. +Parser::Parser (void) +{ +} + +/// Destructeur +Parser::~Parser (void) +{ +} + +/// Lance le parseur sur un fichier. +void +Parser::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 (*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.error_.empty ()) + throw std::runtime_error (e.error_); + else + throw std::runtime_error ("parse error"); + } + } + catch (const std::exception &e) + { + fclose (f); + throw std::runtime_error ("in file \"" + file + "\": " + e.what ()); + } + fclose (f); +} + +/// Lance le parseur sur une chaîne. +void +Parser::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 (*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.error_.empty ()) + throw std::runtime_error (e.error_); + else + throw std::runtime_error ("parse error"); + } + } + catch (const std::exception &e) + { + throw std::runtime_error ("in string \"" + s + "\": " + e.what ()); + } +} + +/// Fonction appelée lors d'une affectation. VAL peut être modifié, il est +/// détruit suite à l'appel. +void +Parser::assign (const std::string &id, any &val) +{ + throw std::runtime_error ("unexpected assignement"); +} + +/// Fonction appelée lors d'un appel. ARGS peut être modifié, il est +/// détruit suite à l'appel. +void +Parser::call (const std::string &id, AnyList &args) +{ + throw std::runtime_error ("unexpected call"); +} + +/// Constructeur pour initialiser les références. +Parser::Extra::Extra (Parser &parser, bool useLine) + : line (1), parser_ (parser), useLine_ (useLine) +{ +} + +/// Recueille l'erreur de bison. +void +Parser::Extra::error (const std::string &e) +{ + if (error_.empty ()) + { + error_ = e; + if (useLine_) + { + std::stringstream os; + os << line; + error_ += ", line "; + error_ += os.str (); + } + } +} + +/// Fonction appelée lors d'une affectation par bison. +bool +Parser::Extra::assign (const std::string &id, any &val) +{ + try + { + parser_.assign (id, val); + } + catch (const std::exception &e) + { + error (e.what ()); + return false; + } + return true; +} + +/// Fonction appelée lors d'un appel par bison. +bool +Parser::Extra::call (const std::string &id, AnyList &args) +{ + try + { + parser_.call (id, args); + } + catch (const std::exception &e) + { + error (e.what ()); + return false; + } + return true; +} + +/* 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