#define __GINAC_BASIC_H__
#include <iostream>
-#include <typeinfo>
#include <vector>
// CINT needs <algorithm> to work properly with <vector>
class numeric;
class relational;
class archive_node;
+class print_context;
+
+typedef std::vector<ex> exvector;
+
+
+/** Function object for map(). */
+struct map_function {
+ typedef const ex & argument_type;
+ typedef ex result_type;
+ virtual ex operator()(const ex & e) = 0;
+};
-// Cint doesn't like vector<..,default_alloc> but malloc_alloc is
-// unstandardized and not supported by newer GCCs.
-#if defined(__GNUC__) && ((__GNUC__ == 2) && (__GNUC_MINOR__ < 97))
- typedef std::vector<ex,malloc_alloc> exvector;
-#else
- typedef std::vector<ex> exvector;
-#endif
/** This class is the ABC (abstract base class) of GiNaC's class hierarchy.
* It is responsible for the reference counting. */
friend class ex;
-// member functions
-
// default ctor, dtor, copy ctor assignment operator and helpers
public:
basic() : tinfo_key(TINFO_basic), flags(0), refcount(0)
{
/* debugmsg("basic ctor with tinfo_key", LOGLEVEL_CONSTRUCT); */
}
- // functions overriding virtual functions from bases classes
- // none
// new virtual functions which can be overridden by derived classes
public: // only const functions please (may break reference counting)
virtual basic * duplicate() const;
- virtual void print(std::ostream & os,unsigned upper_precedence = 0) const;
- virtual void printraw(std::ostream & os) const;
- virtual void printtree(std::ostream & os, unsigned indent) const;
- virtual void printcsrc(std::ostream & os, unsigned type, unsigned upper_precedence = 0) const;
+ virtual void print(const print_context & c, unsigned level = 0) const;
virtual void dbgprint(void) const;
virtual void dbgprinttree(void) const;
+ virtual unsigned precedence(void) const;
virtual bool info(unsigned inf) const;
virtual unsigned nops() const;
virtual ex op(int i) const;
virtual ex & let_op(int i);
virtual ex operator[](const ex & index) const;
virtual ex operator[](int i) const;
+ virtual ex expand(unsigned options = 0) const;
virtual bool has(const ex & other) const;
- virtual int degree(const symbol & s) const;
- virtual int ldegree(const symbol & s) const;
- virtual ex coeff(const symbol & s, int n = 1) const;
- virtual ex collect(const symbol & s) const;
+ virtual ex map(map_function & f) const;
+ virtual int degree(const ex & s) const;
+ virtual int ldegree(const ex & s) const;
+ virtual ex coeff(const ex & s, int n = 1) const;
+ virtual ex collect(const ex & s, bool distributed = false) const;
virtual ex eval(int level = 0) const;
virtual ex evalf(int level = 0) const;
+ virtual ex evalm(void) const;
virtual ex series(const relational & r, int order, unsigned options = 0) const;
- virtual ex subs(const lst & ls, const lst & lr) const;
+ virtual bool match(const ex & pattern, lst & repl_lst) const;
+ virtual ex subs(const lst & ls, const lst & lr, bool no_pattern = false) const;
virtual ex normal(lst &sym_lst, lst &repl_lst, int level = 0) const;
virtual ex to_rational(lst &repl_lst) const;
virtual numeric integer_content(void) const;
virtual ex smod(const numeric &xi) const;
virtual numeric max_coefficient(void) const;
- virtual exvector get_indices(void) const;
- virtual ex simplify_ncmul(const exvector & v) const;
-protected: // non-const functions should be called from class ex only
+ virtual exvector get_free_indices(void) const;
+ virtual ex eval_indexed(const basic & i) const;
+ virtual ex add_indexed(const ex & self, const ex & other) const;
+ virtual ex scalar_mul_indexed(const ex & self, const numeric & other) const;
+ virtual bool contract_with(exvector::iterator self, exvector::iterator other, exvector & v) const;
+ virtual unsigned return_type(void) const;
+ virtual unsigned return_type_tinfo(void) const;
+protected: // functions that should be called from class ex only
virtual ex derivative(const symbol & s) const;
virtual int compare_same_type(const basic & other) const;
virtual bool is_equal_same_type(const basic & other) const;
- virtual unsigned return_type(void) const;
- virtual unsigned return_type_tinfo(void) const;
+ virtual bool match_same_type(const basic & other) const;
virtual unsigned calchash(void) const;
- virtual ex expand(unsigned options = 0) const;
+ virtual ex simplify_ncmul(const exvector & v) const;
// non-virtual functions in this class
public:
- ex subs(const ex & e) const;
+ ex subs(const ex & e, bool no_pattern = false) const;
ex diff(const symbol & s, unsigned nth=1) const;
int compare(const basic & other) const;
bool is_equal(const basic & other) const;
const basic & hold(void) const;
unsigned gethash(void) const { if (flags & status_flags::hash_calculated) return hashvalue; else return calchash(); }
unsigned tinfo(void) const {return tinfo_key;}
+
/** Set some status_flags. */
const basic & setflag(unsigned f) const {flags |= f; return *this;}
+
/** Clear some status_flags. */
const basic & clearflag(unsigned f) const {flags &= ~f; return *this;}
+
protected:
void ensure_if_modifiable(void) const;
-// member variables
-
+ // member variables
protected:
unsigned tinfo_key; ///< typeinfo
mutable unsigned flags; ///< of type status_flags
mutable unsigned hashvalue; ///< hash value
- static unsigned precedence; ///< precedence for printing parens
- static unsigned delta_indent; ///< precedence for printtree
private:
unsigned refcount; ///< Number of reference counts
};
extern int max_recursion_level;
-// convenience macros
+// Obsolete convenience macros. To be phased out soon!
+// Use the inlined template functions below instead of these macros.
-/** Check if OBJ is a TYPE, including base classes. */
#define is_of_type(OBJ,TYPE) \
(dynamic_cast<const TYPE *>(&OBJ)!=0)
-/** Check if OBJ is a TYPE, not including base classes. */
#define is_exactly_of_type(OBJ,TYPE) \
((OBJ).tinfo()==GiNaC::TINFO_##TYPE)
-/** Check if ex is a handle to a TYPE, including base classes. */
#define is_ex_of_type(OBJ,TYPE) \
(dynamic_cast<const TYPE *>((OBJ).bp)!=0)
-/** Check if ex is a handle to a TYPE, not including base classes. */
#define is_ex_exactly_of_type(OBJ,TYPE) \
((*(OBJ).bp).tinfo()==GiNaC::TINFO_##TYPE)
+// convenience type checker template functions
+
+/** Check if obj is a T, including base classes. */
+template <class T>
+inline bool is_a(const basic & obj)
+{
+ return dynamic_cast<const T *>(&obj)!=0;
+}
+
+/** Check if obj is a T, not including base classes. This one is just an
+ * inefficient default. It should in all time-critical cases be overridden
+ * by template specializations that don't create a temporary. */
+template <class T>
+inline bool is_exactly_a(const class basic & obj)
+{
+ const T foo; return foo.tinfo()==obj.tinfo();
+}
+
+/** Check if ex is a handle to a T, including base classes. */
+template <class T>
+inline bool is_a(const ex & obj)
+{
+ return is_a<T>(*obj.bp);
+}
+
+/** Check if ex is a handle to a T, not including base classes. */
+template <class T>
+inline bool is_exactly_a(const ex & obj)
+{
+ return is_exactly_a<T>(*obj.bp);
+}
+
+/** Return a reference to the basic-derived class T object embedded in an
+ * expression. This is fast but unsafe: the result is undefined if the
+ * expression does not contain a T object at its top level.
+ *
+ * @param e expression
+ * @return reference to pseries object
+ * @see is_exactly_a<class T>() */
+template <class T>
+inline const T &ex_to(const ex &e)
+{
+ return static_cast<const T &>(*e.bp);
+}
+
} // namespace GiNaC
#endif // ndef __GINAC_BASIC_H__
git://www.ginac.de / ginac.git / blobdiff