X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?a=blobdiff_plain;f=ginac%2Fbasic.h;h=28568c56025353be45b9b7d3cb5be1e0c39b7e36;hb=6399332bf75937cf57b5352884680897b517f4ba;hp=375f25070776fd3525599701314bd138e629b233;hpb=e58f5808a2d0fe6cb9d60370ede700d97a8bb702;p=ginac.git diff --git a/ginac/basic.h b/ginac/basic.h index 375f2507..28568c56 100644 --- a/ginac/basic.h +++ b/ginac/basic.h @@ -45,13 +45,16 @@ class relational; class archive_node; class print_context; -// 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 exvector; -#else - typedef std::vector exvector; -#endif +typedef std::vector exvector; + + +/** Function object for map(). */ +struct map_function { + typedef const ex & argument_type; + typedef ex result_type; + virtual ex operator()(const ex & e) = 0; +}; + /** This class is the ABC (abstract base class) of GiNaC's class hierarchy. * It is responsible for the reference counting. */ @@ -93,8 +96,6 @@ protected: { /* 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) @@ -102,44 +103,49 @@ public: // only const functions please (may break reference counting) 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 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_free_indices(void) const; - virtual ex simplify_ncmul(const exvector & v) 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; -protected: // non-const functions should be called from class ex only + 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; @@ -153,10 +159,6 @@ public: /** Clear some status_flags. */ const basic & clearflag(unsigned f) const {flags &= ~f; return *this;} - /** Get relative precedence level (useful for implementing pretty-printed - * output). */ - unsigned get_precedence(void) const {return precedence;} - protected: void ensure_if_modifiable(void) const; @@ -165,7 +167,6 @@ protected: unsigned tinfo_key; ///< typeinfo mutable unsigned flags; ///< of type status_flags mutable unsigned hashvalue; ///< hash value - static unsigned precedence; ///< precedence for printing parens private: unsigned refcount; ///< Number of reference counts }; @@ -174,24 +175,66 @@ private: 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(&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((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 +inline bool is_a(const basic & obj) +{ + return dynamic_cast(&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 +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 +inline bool is_a(const ex & obj) +{ + return is_a(*obj.bp); +} + +/** Check if ex is a handle to a T, not including base classes. */ +template +inline bool is_exactly_a(const ex & obj) +{ + return is_exactly_a(*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() */ +template +inline const T &ex_to(const ex &e) +{ + return static_cast(*e.bp); +} + } // namespace GiNaC #endif // ndef __GINAC_BASIC_H__