* Improved lsolve() of systems containing non-numeric coefficients.

[ginac.git] / ginac / input_lexer.h

diff --git a/ginac/input_lexer.h b/ginac/input_lexer.h
index 575c836c75c9bca76adbcccbf38446e0a3084ce9..3ea44f71f8022bb76d460053eac477368c9eb5e1 100644 (file)
--- a/ginac/input_lexer.h
+++ b/ginac/input_lexer.h
@@ -4,7 +4,7 @@
  *  This file must be processed with flex. */
 
 /*
- *  GiNaC Copyright (C) 1999-2000 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2007 Johannes Gutenberg University Mainz, Germany
  *
  *  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
@@ -18,14 +18,16 @@
  *
  *  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
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
 #ifndef __GINAC_INPUT_LEXER_H__
 #define __GINAC_INPUT_LEXER_H__
 
+extern "C" {
 #include <stdio.h>
-
+}
+       
 #include "config.h"
 
 // yacc stack type
@@ -35,35 +37,33 @@
 extern int ginac_yyerror(char *s);
 extern int ginac_yylex(void);
 extern void ginac_yyrestart(FILE *f);
-#if YYTEXT_POINTER
 extern char *ginac_yytext;
-#else
-extern char ginac_yytext[];
-#endif
 
-#ifndef NO_NAMESPACE_GINAC
 namespace GiNaC {
-#endif // ndef NO_NAMESPACE_GINAC
 
 class ex;
 
-/** Set the input string to be parsed by yyparse(). */
-extern void set_lexer_string(const string &s);
+/** Set the input string to be parsed by ginac_yyparse() (used internally). */
+extern void set_lexer_string(const std::string &s);
+
+/** Get name of symbol/index (used internally). */
+extern std::string get_symbol_name(const ex & s);
 
-/** Set the list of predefined symbols for the lexer (used internally for stream input). */
+/** Set the list of predefined symbols for the lexer (used internally). */
 extern void set_lexer_symbols(ex l);
 
-/** The expression parser function (used internally for stream input). */
-extern int yyparse();
+/** Check whether lexer symbol was predefined (vs. created by the lexer, e.g. function names). */
+extern bool is_lexer_symbol_predefined(const ex &s);
+
+/** The expression parser function (used internally). */
+extern int ginac_yyparse(void);
 
-/** The expression returned by the parser (used internally for stream input). */
+/** The expression returned by the parser (used internally). */
 extern ex parsed_ex;
 
 /** Get error message from the parser. */
-extern string get_parser_error(void);
+extern std::string get_parser_error(void);
 
-#ifndef NO_NAMESPACE_GINAC
 } // namespace GiNaC
-#endif // ndef NO_NAMESPACE_GINAC
 
 #endif // ndef __GINAC_INPUT_LEXER_H__