added online help for conjugate()

[ginac.git] / ginsh / ginsh_lexer.ll

diff --git a/ginsh/ginsh_lexer.ll b/ginsh/ginsh_lexer.ll
index 4194f94337af97e8ecfa155cee9c34a3c892ac61..896c28d34a3ae38eb91fce11cd2b95eb619dfda9 100644 (file)
--- a/ginsh/ginsh_lexer.ll
+++ b/ginsh/ginsh_lexer.ll
@@ -4,7 +4,7 @@
  *  This file must be processed with flex. */
 
 /*
- *  GiNaC Copyright (C) 1999-2003 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2004 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
@@ -37,6 +37,9 @@
 // Table of all used symbols
 sym_tab syms;
 
+// Type of symbols to generate (real or complex)
+unsigned symboltype = symbol_options::complex;
+
 // lex input function
 static int ginsh_input(char *buf, int max_size);
 %}
@@ -79,6 +82,8 @@ xyzzy                 return T_XYZZY;
 inventory              return T_INVENTORY;
 look                   return T_LOOK;
 score                  return T_SCORE;
+complex_symbols return T_COMPLEX_SYMBOLS;
+real_symbols    return T_REAL_SYMBOLS;
 
                        /* comparison */
 "=="                   return T_EQUAL;
@@ -105,7 +110,11 @@ score                      return T_SCORE;
 {A}{AN}*               {
                                sym_tab::const_iterator i = syms.find(yytext);
                                if (i == syms.end()) {
-                                       yylval = syms[yytext] = *(new symbol(yytext));
+                                       if (symboltype == symbol_options::complex) {
+                                               yylval = syms[yytext] = *(new symbol(yytext));
+                                       } else {
+                                               yylval = syms[yytext] = *(new symbol(yytext, symbol_options::real));
+                                       }
                                } else
                                        yylval = i->second;
                                return T_SYMBOL;