* Implementation of GiNaC's symbolic objects. */
/*
- * GiNaC Copyright (C) 1999-2010 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2018 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
#include "symbol.h"
#include "lst.h"
#include "archive.h"
-#include "tostring.h"
#include "utils.h"
#include "hash_seed.h"
#include "inifcns.h"
n.find_string("name", tmp_name);
// If symbol is in sym_lst, return the existing symbol
- for (lst::const_iterator it = sym_lst.begin(); it != sym_lst.end(); ++it) {
- if (is_a<symbol>(*it) && (ex_to<symbol>(*it).name == tmp_name)) {
- *this = ex_to<symbol>(*it);
+ for (auto & s : sym_lst) {
+ if (is_a<symbol>(s) && (ex_to<symbol>(s).name == tmp_name)) {
+ *this = ex_to<symbol>(s);
+ // XXX: This method is responsible for reading realsymbol
+ // and possymbol objects too. But
+ // basic::operator=(const basic& other)
+ // resets status_flags::evaluated if other and *this are
+ // of different types. Usually this is a good idea, but
+ // doing this for symbols is wrong (for one, nothing is
+ // going to set status_flags::evaluated, evaluation will
+ // loop forever). Therefore we need to restore flags.
+ setflag(status_flags::evaluated | status_flags::expanded);
return;
}
}
// public
+std::string symbol::get_name() const
+{
+ if (name.empty()) {
+ name = "symbol" + std::to_string(serial);
+ }
+ return name;
+}
+
+std::string symbol::get_TeX_name() const
+{
+ if (TeX_name.empty()) {
+ return get_default_TeX_name(get_name());
+ }
+ return TeX_name;
+}
+
+// protected
+
void symbol::do_print(const print_context & c, unsigned level) const
{
- if (!name.empty())
- c.s << name;
- else
- c.s << "symbol" << serial;
+ c.s << get_name();
}
void symbol::do_print_latex(const print_latex & c, unsigned level) const