* Interface to GiNaC's ABC. */
/*
- * GiNaC Copyright (C) 1999-2006 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
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifndef __GINAC_BASIC_H__
-#define __GINAC_BASIC_H__
-
-#include <cstddef> // for size_t
-#include <vector>
-#include <map>
-// CINT needs <algorithm> to work properly with <vector>
-#include <algorithm>
+#ifndef GINAC_BASIC_H
+#define GINAC_BASIC_H
#include "flags.h"
#include "ptr.h"
#include "assertion.h"
#include "registrar.h"
+#include <cstddef> // for size_t
+#include <map>
+#include <set>
+#include <typeinfo> // for typeid
+#include <vector>
+#include <utility>
+
namespace GiNaC {
class ex;
-class ex_is_less;
+struct ex_is_less;
class symbol;
class numeric;
class relational;
class print_context;
typedef std::vector<ex> exvector;
+typedef std::set<ex, ex_is_less> exset;
typedef std::map<ex, ex, ex_is_less> exmap;
// Define this to enable some statistical output for comparisons and hashing
/** Degenerate base class for visitors. basic and derivative classes
* support Robert C. Martin's Acyclic Visitor pattern (cf.
- * http://objectmentor.com/publications/acv.pdf). */
+ * http://condor.depaul.edu/dmumaugh/OOT/Design-Principles/acv.pdf
+ * or chapter 10 of Andrei Alexandrescu's "Modern C++ Design"). */
class visitor {
protected:
virtual ~visitor() {}
// default constructor, destructor, copy constructor and assignment operator
protected:
- basic() : tinfo_key(&tinfo_static), flags(0) {}
+ basic() : flags(0) {}
public:
/** basic destructor, virtual because class ex will delete objects of
const basic & operator=(const basic & other);
protected:
- /** Constructor with specified tinfo_key (used by derived classes instead
- * of the default constructor to avoid assigning tinfo_key twice). */
- basic(tinfo_t ti) : tinfo_key(ti), flags(0) {}
-
// new virtual functions which can be overridden by derived classes
public: // only const functions please (may break reference counting)
/** Create a clone of this object on the heap. One can think of this as
* simulating a virtual copy constructor which is needed for instance by
* the refcounted construction of an ex from a basic. */
- virtual basic * duplicate() const { return new basic(*this); }
+ virtual basic * duplicate() const
+ {
+ basic * bp = new basic(*this);
+ bp->setflag(status_flags::dynallocated);
+ return bp;
+ }
// evaluation
- virtual ex eval(int level = 0) const;
- virtual ex evalf(int level = 0) const;
+ virtual ex eval() const;
+ virtual ex evalf() const;
virtual ex evalm() const;
virtual ex eval_integ() const;
protected:
// pattern matching
virtual bool has(const ex & other, unsigned options = 0) const;
- virtual bool match(const ex & pattern, lst & repl_lst) const;
+ virtual bool match(const ex & pattern, exmap & repls) const;
protected:
virtual bool match_same_type(const basic & other) const;
public:
virtual ex series(const relational & r, int order, unsigned options = 0) const;
// rational functions
- virtual ex normal(exmap & repl, exmap & rev_lookup, int level = 0) const;
+ virtual ex normal(exmap & repl, exmap & rev_lookup) const;
virtual ex to_rational(exmap & repl) const;
virtual ex to_polynomial(exmap & repl) const;
// noncommutativity
virtual unsigned return_type() const;
- virtual tinfo_t return_type_tinfo() const;
+ virtual return_type_t return_type_tinfo() const;
- // complex conjugation
+ // functions for complex expressions
virtual ex conjugate() const;
+ virtual ex real_part() const;
+ virtual ex imag_part() const;
// functions that should be called from class ex only
protected:
void print_dispatch(const registered_class_info & ri, const print_context & c, unsigned level) const;
+ /** Save (serialize) the object into archive node.
+ *
+ * Losely speaking, this method turns an expression into a byte
+ * stream (which can be saved and restored later on, or sent via
+ * network, etc.)
+ */
+ virtual void archive(archive_node& n) const;
+ /** Load (deserialize) the object from an archive node.
+ *
+ * @note This method is essentially a constructor. However,
+ * constructors can't be virtual. So, if unarchiving routines
+ * are implemented as constructors one would need to define such
+ * a constructor in every class, even if all it does is simply
+ * calling constructor of a superclass.
+ */
+ virtual void read_archive(const archive_node& n, lst& syms); // no const
+
ex subs_one_level(const exmap & m, unsigned options) const;
ex diff(const symbol & s, unsigned nth = 1) const;
int compare(const basic & other) const;
}
}
- tinfo_t tinfo() const {return tinfo_key;}
-
/** Set some status_flags. */
const basic & setflag(unsigned f) const {flags |= f; return *this;}
// member variables
protected:
- tinfo_t tinfo_key; ///< type info
mutable unsigned flags; ///< of type status_flags
mutable unsigned hashvalue; ///< hash value
};
-
// global variables
-extern int max_recursion_level;
-
// convenience type checker template functions
template <class T>
inline bool is_a(const basic &obj)
{
- return dynamic_cast<const T *>(&obj) != 0;
+ return dynamic_cast<const T *>(&obj) != nullptr;
}
/** Check if obj is a T, not including base classes. */
template <class T>
inline bool is_exactly_a(const basic & obj)
{
- return obj.tinfo() == &T::tinfo_static;
+ return typeid(T) == typeid(obj);
+}
+
+/** Constructs a new (class basic or derived) B object on the heap.
+ *
+ * This function picks the object's ctor based on the given argument types.
+ *
+ * This helps the constructor of ex from basic (or a derived class B) because
+ * then the constructor doesn't have to duplicate the object onto the heap.
+ * See ex::construct_from_basic(const basic &) for more information.
+ */
+template<class B, typename... Args>
+inline B & dynallocate(Args &&... args)
+{
+ return const_cast<B &>(static_cast<const B &>((new B(std::forward<Args>(args)...))->setflag(status_flags::dynallocated)));
+}
+/** Constructs a new (class basic or derived) B object on the heap.
+ *
+ * This function is needed for GiNaC classes which have public ctors from
+ * initializer lists of expressions (which are not a type and not captured
+ * by the variadic template version).
+ */
+template<class B>
+inline B & dynallocate(std::initializer_list<ex> il)
+{
+ return const_cast<B &>(static_cast<const B &>((new B(il))->setflag(status_flags::dynallocated)));
}
} // namespace GiNaC
-#endif // ndef __GINAC_BASIC_H__
+#endif // ndef GINAC_BASIC_H