* 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_NAMESPACE_GINAC
namespace GiNaC {
+#endif // ndef NO_NAMESPACE_GINAC
+
+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);
- serial=next_serial++;
- name=autoname_prefix()+ToString(serial);
- asexinfop=new assigned_ex_info;
+ debugmsg("symbol default constructor", LOGLEVEL_CONSTRUCT);
+ serial = next_serial++;
+ name = autoname_prefix()+ToString(serial);
+ asexinfop = new assigned_ex_info;
setflag(status_flags::evaluated);
}
symbol::~symbol()
{
- debugmsg("symbol destructor",LOGLEVEL_DESTRUCT);
+ debugmsg("symbol destructor", LOGLEVEL_DESTRUCT);
destroy(0);
}
-symbol::symbol(symbol const & other)
+symbol::symbol(const symbol & other)
{
- debugmsg("symbol copy constructor",LOGLEVEL_CONSTRUCT);
+ debugmsg("symbol copy constructor", LOGLEVEL_CONSTRUCT);
copy(other);
}
-void symbol::copy(symbol const & other)
+void symbol::copy(const symbol & other)
{
- basic::copy(other);
- name=other.name;
- serial=other.serial;
- asexinfop=other.asexinfop;
+ inherited::copy(other);
+ name = other.name;
+ serial = other.serial;
+ asexinfop = other.asexinfop;
++asexinfop->refcount;
}
delete asexinfop;
}
if (call_parent) {
- basic::destroy(call_parent);
+ inherited::destroy(call_parent);
}
}
// public
-symbol::symbol(string const & initname) : basic(TINFO_symbol)
+symbol::symbol(const string & initname) : inherited(TINFO_symbol)
+{
+ 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 string",LOGLEVEL_CONSTRUCT);
- name=initname;
- serial=next_serial++;
- asexinfop=new assigned_ex_info;
+ 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 (unsigned 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);
}
+void symbol::print(ostream & os, unsigned upper_precedence) const
+{
+ debugmsg("symbol print",LOGLEVEL_PRINT);
+ os << name;
+}
+
+void symbol::printraw(ostream & os) const
+{
+ debugmsg("symbol printraw",LOGLEVEL_PRINT);
+ os << "symbol(" << "name=" << name << ",serial=" << serial
+ << ",hash=" << hashvalue << ",flags=" << flags << ")";
+}
+
+void symbol::printtree(ostream & os, unsigned indent) const
+{
+ debugmsg("symbol printtree",LOGLEVEL_PRINT);
+ os << string(indent,' ') << name << " (symbol): "
+ << "serial=" << serial
+ << ", hash=" << hashvalue << " (0x" << hex << hashvalue << dec << ")"
+ << ", flags=" << flags << endl;
+}
+
+void symbol::printcsrc(ostream & os, unsigned type, unsigned upper_precedence) const
+{
+ debugmsg("symbol print csrc", LOGLEVEL_PRINT);
+ os << name;
+}
+
bool symbol::info(unsigned inf) const
{
if (inf==info_flags::symbol) return true;
- if (inf==info_flags::polynomial || inf==info_flags::integer_polynomial || inf==info_flags::rational_polynomial || inf==info_flags::rational_function) {
+ if (inf==info_flags::polynomial ||
+ inf==info_flags::integer_polynomial ||
+ inf==info_flags::cinteger_polynomial ||
+ inf==info_flags::rational_polynomial ||
+ inf==info_flags::crational_polynomial ||
+ inf==info_flags::rational_function) {
return true;
} else {
- return basic::info(inf);
+ return inherited::info(inf);
}
}
return this->hold();
}
-bool symbol::has(ex const & other) const
+bool symbol::has(const ex & other) const
{
if (is_equal(*other.bp)) return true;
return false;
}
-int symbol::degree(symbol const & s) const
+int symbol::degree(const symbol & s) const
{
return compare_same_type(s)==0 ? 1 : 0;
}
-int symbol::ldegree(symbol const & s) const
+int symbol::ldegree(const symbol & s) const
{
return compare_same_type(s)==0 ? 1 : 0;
}
-ex symbol::coeff(symbol const & s, int const n) const
+ex symbol::coeff(const symbol & s, int n) const
{
if (compare_same_type(s)==0) {
- return n==1 ? exONE() : exZERO();
+ return n==1 ? _ex1() : _ex0();
} else {
- return n==0 ? *this : exZERO();
+ return n==0 ? *this : _ex0();
}
}
}
}
-ex symbol::subs(lst const & ls, lst const & lr) const
+ex symbol::subs(const lst & ls, const lst & lr) const
{
- ASSERT(ls.nops()==lr.nops());
-#ifdef DOASSERT
- for (int i=0; i<ls.nops(); i++) {
- ASSERT(is_ex_exactly_of_type(ls.op(i),symbol)||
+ GINAC_ASSERT(ls.nops()==lr.nops());
+#ifdef DO_GINAC_ASSERT
+ 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 DOASSERT
+#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);
}
// protected
-int symbol::compare_same_type(basic const & other) const
+/** Implementation of ex::diff() for single differentiation of a symbol.
+ * It returns 1 or 0.
+ *
+ * @see ex::diff */
+ex symbol::derivative(const symbol & s) const
+{
+ if (compare_same_type(s)) {
+ return _ex0();
+ } else {
+ return _ex1();
+ }
+}
+
+int symbol::compare_same_type(const basic & other) const
{
- ASSERT(is_of_type(other,symbol));
+ GINAC_ASSERT(is_of_type(other,symbol));
const symbol *o = static_cast<const symbol *>(&other);
if (serial==o->serial) return 0;
return serial < o->serial ? -1 : 1;
}
-bool symbol::is_equal_same_type(basic const & other) const
+bool symbol::is_equal_same_type(const basic & other) const
{
- ASSERT(is_of_type(other,symbol));
+ GINAC_ASSERT(is_of_type(other,symbol));
const symbol *o = static_cast<const symbol *>(&other);
return serial==o->serial;
}
// public
-void symbol::assign(ex const & value)
+void symbol::assign(const ex & value)
{
asexinfop->is_assigned=1;
asexinfop->assigned_expression=value;
{
if (asexinfop->is_assigned) {
asexinfop->is_assigned=0;
- asexinfop->assigned_expression=exZERO();
+ asexinfop->assigned_expression=_ex0();
}
setflag(status_flags::evaluated);
}
//////////
const symbol some_symbol;
-type_info const & typeid_symbol=typeid(some_symbol);
+const type_info & typeid_symbol=typeid(some_symbol);
//////////
// subclass assigned_ex_info
{
}
+#ifndef NO_NAMESPACE_GINAC
} // namespace GiNaC
+#endif // ndef NO_NAMESPACE_GINAC
git://www.ginac.de / ginac.git / blobdiff