#include "basic.h"
#include "operators.h"
+#include <functional>
+
namespace GiNaC {
// Sorry, this is the only constant to pollute the global scope, the other ones
class lst;
class scalar_products;
+
/** Lightweight wrapper for GiNaC's symbolic objects. Basically all it does is
* to hold a pointer to the other objects, manage the reference counting and
* provide methods for manipulation of these objects. (Some people call such
* symbols and other parser errors will throw an exception. */
ex(const std::string &s, const ex &l);
- // functions overriding virtual functions from bases classes
- // none
-
- // new virtual functions which can be overridden by derived classes
- // none
-
// non-virtual functions in this class
public:
void swap(ex & other);
bool info(unsigned inf) const { return bp->info(inf); }
unsigned nops() const { return bp->nops(); }
ex expand(unsigned options=0) const;
- bool has(const ex & other) const { return bp->has(other); }
- ex map(map_func f) const { return bp->map(f); }
+ bool has(const ex & pattern) const { return bp->has(pattern); }
+ ex map(map_function & f) const { return bp->map(f); }
+ ex map(ex (*f)(const ex & e)) const;
+ bool find(const ex & pattern, lst & found) const;
int degree(const ex & s) const { return bp->degree(s); }
int ldegree(const ex & s) const { return bp->ldegree(s); }
ex coeff(const ex & s, int n = 1) const { return bp->coeff(s, n); }
ex symmetrize(const lst & l) const;
ex antisymmetrize(void) const;
ex antisymmetrize(const lst & l) const;
+ ex symmetrize_cyclic(void) const;
+ ex symmetrize_cyclic(const lst & l) const;
ex simplify_ncmul(const exvector & v) const { return bp->simplify_ncmul(v); }
ex operator[](const ex & index) const;
ex operator[](int i) const;
inline ex expand(const ex & thisex, unsigned options = 0)
{ return thisex.expand(options); }
-inline bool has(const ex & thisex, const ex & other)
-{ return thisex.has(other); }
+inline bool has(const ex & thisex, const ex & pattern)
+{ return thisex.has(pattern); }
+
+inline bool find(const ex & thisex, const ex & pattern, lst & found)
+{ return thisex.find(pattern, found); }
inline int degree(const ex & thisex, const ex & s)
{ return thisex.degree(s); }
inline ex antisymmetrize(const ex & thisex, const lst & l)
{ return thisex.antisymmetrize(l); }
+inline ex symmetrize_cyclic(const ex & thisex)
+{ return thisex.symmetrize_cyclic(); }
+
+inline ex symmetrize_cyclic(const ex & thisex, const lst & l)
+{ return thisex.symmetrize_cyclic(l); }
+
inline ex op(const ex & thisex, int i)
{ return thisex.op(i); }
inline void swap(ex & e1, ex & e2)
{ e1.swap(e2); }
+
+/* Function objects for STL sort() etc. */
+struct ex_is_less : public std::binary_function<ex, ex, bool> {
+ bool operator() (const ex &lh, const ex &rh) const { return lh.compare(rh) < 0; }
+};
+
+struct ex_is_equal : public std::binary_function<ex, ex, bool> {
+ bool operator() (const ex &lh, const ex &rh) const { return lh.is_equal(rh); }
+};
+
+struct ex_swap : public std::binary_function<ex, ex, void> {
+ void operator() (ex &lh, ex &rh) const { lh.swap(rh); }
+};
+
+
+/* Convert function pointer to function object suitable for map(). */
+class pointer_to_map_function : public map_function {
+protected:
+ ex (*ptr)(const ex &);
+public:
+ explicit pointer_to_map_function(ex (*x)(const ex &)) : ptr(x) {}
+ ex operator()(const ex & e) { return ptr(e); }
+};
+
+template<class T1>
+class pointer_to_map_function_1arg : public map_function {
+protected:
+ ex (*ptr)(const ex &, T1);
+ T1 arg1;
+public:
+ explicit pointer_to_map_function_1arg(ex (*x)(const ex &, T1), T1 a1) : ptr(x), arg1(a1) {}
+ ex operator()(const ex & e) { return ptr(e, arg1); }
+};
+
+template<class T1, class T2>
+class pointer_to_map_function_2args : public map_function {
+protected:
+ ex (*ptr)(const ex &, T1, T2);
+ T1 arg1;
+ T2 arg2;
+public:
+ explicit pointer_to_map_function_2args(ex (*x)(const ex &, T1, T2), T1 a1, T2 a2) : ptr(x), arg1(a1), arg2(a2) {}
+ ex operator()(const ex & e) { return ptr(e, arg1, arg2); }
+};
+
+template<class T1, class T2, class T3>
+class pointer_to_map_function_3args : public map_function {
+protected:
+ ex (*ptr)(const ex &, T1, T2, T3);
+ T1 arg1;
+ T2 arg2;
+ T3 arg3;
+public:
+ explicit pointer_to_map_function_3args(ex (*x)(const ex &, T1, T2, T3), T1 a1, T2 a2, T3 a3) : ptr(x), arg1(a1), arg2(a2), arg3(a3) {}
+ ex operator()(const ex & e) { return ptr(e, arg1, arg2, arg3); }
+};
+
+inline ex ex::map(ex (*f)(const ex & e)) const
+{
+ pointer_to_map_function fcn(f);
+ return bp->map(fcn);
+}
+
+
} // namespace GiNaC
#endif // ndef __GINAC_EX_H__