- virtual basic * duplicate() const;
- virtual void printraw(ostream & os) const;
- virtual void printtree(ostream & os, unsigned indent) const;
- virtual void print(ostream & os,unsigned upper_precedence=0) const;
- virtual void printcsrc(ostream & os, unsigned type, unsigned upper_precedence=0) const;
- virtual void dbgprint(void) const;
- virtual void dbgprinttree(void) const;
- virtual bool info(unsigned inf) const;
- virtual int nops() const;
- virtual ex op(int const i) const;
- virtual ex & let_op(int const i);
- virtual ex operator[](ex const & index) const;
- virtual ex operator[](int const i) const;
- virtual bool has(ex const & other) const;
- virtual int degree(symbol const & s) const;
- virtual int ldegree(symbol const & s) const;
- virtual ex coeff(symbol const & s, int const n=1) const;
- virtual ex collect(symbol const & s) const;
- virtual ex eval(int level=0) const;
- virtual ex evalf(int level=0) const;
- virtual ex diff(symbol const & s) const;
- virtual ex series(symbol const & s, ex const & point, int order) const;
- virtual ex subs(lst const & ls, lst const & lr) const;
- virtual ex normal(lst &sym_lst, lst &repl_lst, int level=0) const;
- virtual numeric integer_content(void) const;
- virtual ex smod(numeric const &xi) const;
- virtual numeric max_coefficient(void) const;
- virtual exvector get_indices(void) const;
- virtual ex simplify_ncmul(exvector const & v) const;
-protected: // non-const functions should be called from class ex only
- virtual int compare_same_type(basic const & other) const;
- virtual bool is_equal_same_type(basic const & other) const;
- virtual unsigned return_type(void) const;
- virtual unsigned return_type_tinfo(void) const;
- virtual unsigned calchash(void) const;
- virtual ex expand(unsigned options=0) const;
-
- // non-virtual functions in this class
+
+ /** 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); }
+
+ // evaluation
+ virtual ex eval(int level = 0) const;
+ virtual ex evalf(int level = 0) const;
+ virtual ex evalm() const;
+protected:
+ virtual ex eval_ncmul(const exvector & v) const;
+public:
+ virtual ex eval_indexed(const basic & i) const;
+
+ // printing
+ virtual void print(const print_context & c, unsigned level = 0) const;
+ virtual void dbgprint() const;
+ virtual void dbgprinttree() const;
+ virtual unsigned precedence() const;
+
+ // info
+ virtual bool info(unsigned inf) const;
+
+ // operand access
+ virtual size_t nops() const;
+ virtual ex op(size_t i) const;
+ virtual ex operator[](const ex & index) const;
+ virtual ex operator[](size_t i) const;
+ virtual ex & let_op(size_t i);
+ virtual ex & operator[](const ex & index);
+ virtual ex & operator[](size_t i);
+
+ // pattern matching
+ virtual bool has(const ex & other) const;
+ virtual bool match(const ex & pattern, lst & repl_lst) const;
+protected:
+ virtual bool match_same_type(const basic & other) const;