* Implementation of GiNaC's symbolic objects. */
/*
- * GiNaC Copyright (C) 1999 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2000 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 "utils.h"
#include "idx.h"
+#include "archive.h"
#include "debugmsg.h"
+#include "utils.h"
#ifndef NO_GINAC_NAMESPACE
namespace GiNaC {
#endif // ndef NO_GINAC_NAMESPACE
+GINAC_IMPLEMENT_REGISTERED_CLASS(symbol, basic)
+
//////////
// default constructor, destructor, copy constructor assignment operator and helpers
//////////
-symbol::symbol() : basic(TINFO_symbol)
+symbol::symbol() : inherited(TINFO_symbol)
{
- debugmsg("symbol default constructor",LOGLEVEL_CONSTRUCT);
+ debugmsg("symbol default constructor", LOGLEVEL_CONSTRUCT);
serial=next_serial++;
name=autoname_prefix()+ToString(serial);
asexinfop=new assigned_ex_info;
symbol::~symbol()
{
- debugmsg("symbol destructor",LOGLEVEL_DESTRUCT);
+ debugmsg("symbol destructor", LOGLEVEL_DESTRUCT);
destroy(0);
}
symbol::symbol(symbol const & other)
{
- debugmsg("symbol copy constructor",LOGLEVEL_CONSTRUCT);
+ debugmsg("symbol copy constructor", LOGLEVEL_CONSTRUCT);
copy(other);
}
void symbol::copy(symbol const & other)
{
- basic::copy(other);
+ inherited::copy(other);
name=other.name;
serial=other.serial;
asexinfop=other.asexinfop;
delete asexinfop;
}
if (call_parent) {
- basic::destroy(call_parent);
+ inherited::destroy(call_parent);
}
}
// public
-symbol::symbol(string const & initname) : basic(TINFO_symbol)
+symbol::symbol(string const & initname) : inherited(TINFO_symbol)
{
- debugmsg("symbol constructor from string",LOGLEVEL_CONSTRUCT);
+ debugmsg("symbol constructor from string", LOGLEVEL_CONSTRUCT);
name=initname;
serial=next_serial++;
asexinfop=new assigned_ex_info;
setflag(status_flags::evaluated);
}
+//////////
+// archiving
+//////////
+
+/** Construct object from archive_node. */
+symbol::symbol(const archive_node &n, const lst &sym_lst) : inherited(n, sym_lst)
+{
+ debugmsg("symbol constructor from archive_node", LOGLEVEL_CONSTRUCT);
+ serial = next_serial++;
+ if (!(n.find_string("name", name)))
+ name = autoname_prefix() + ToString(serial);
+ asexinfop = new assigned_ex_info;
+ setflag(status_flags::evaluated);
+}
+
+/** Unarchive the object. */
+ex symbol::unarchive(const archive_node &n, const lst &sym_lst)
+{
+ ex s = (new symbol(n, sym_lst))->setflag(status_flags::dynallocated);
+
+ // If symbol is in sym_lst, return the existing symbol
+ for (int i=0; i<sym_lst.nops(); i++) {
+ if (is_ex_of_type(sym_lst.op(i), symbol) && (ex_to_symbol(sym_lst.op(i)).name == ex_to_symbol(s).name))
+ return sym_lst.op(i);
+ }
+ return s;
+}
+
+/** Archive the object. */
+void symbol::archive(archive_node &n) const
+{
+ inherited::archive(n);
+ n.add_string("name", name);
+}
+
//////////
// functions overriding virtual functions from bases classes
//////////
// public
-basic * symbol::duplicate() const
+basic *symbol::duplicate() const
{
- debugmsg("symbol duplicate",LOGLEVEL_DUPLICATE);
+ debugmsg("symbol duplicate", LOGLEVEL_DUPLICATE);
return new symbol(*this);
}
inf==info_flags::rational_function) {
return true;
} else {
- return basic::info(inf);
+ return inherited::info(inf);
}
}
{
GINAC_ASSERT(ls.nops()==lr.nops());
#ifdef DO_GINAC_ASSERT
- for (int i=0; i<ls.nops(); i++) {
+ for (unsigned i=0; i<ls.nops(); i++) {
GINAC_ASSERT(is_ex_exactly_of_type(ls.op(i),symbol)||
is_ex_of_type(ls.op(i),idx));
}
#endif // def DO_GINAC_ASSERT
- for (int i=0; i<ls.nops(); i++) {
+ for (unsigned i=0; i<ls.nops(); i++) {
if (is_ex_exactly_of_type(ls.op(i),symbol)) {
if (compare_same_type(ex_to_symbol(ls.op(i)))==0) return lr.op(i);
}