X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fbasic.h;h=d7fef59385856882a370e4f8383e67700a784e63;hp=e7238e5705ac2c74f29736bf47cff6d194c2580b;hb=e93f20fd0deb9b45d2163cbec247e5181f021a28;hpb=e5362a33f72613b324b3714524a8c2e5f7b7f46f diff --git a/ginac/basic.h b/ginac/basic.h index e7238e57..d7fef593 100644 --- a/ginac/basic.h +++ b/ginac/basic.h @@ -3,7 +3,7 @@ * Interface to GiNaC's ABC. */ /* - * GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany + * GiNaC Copyright (C) 1999-2002 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 @@ -23,10 +23,7 @@ #ifndef __GINAC_BASIC_H__ #define __GINAC_BASIC_H__ -#include -#include #include - // CINT needs to work properly with #include @@ -35,196 +32,186 @@ #include "assertion.h" #include "registrar.h" -#ifndef NO_NAMESPACE_GINAC namespace GiNaC { -#endif // ndef NO_NAMESPACE_GINAC -class basic; class ex; class symbol; class lst; class numeric; 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 -#define INLINE_BASIC_CONSTRUCTORS + +/** 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. */ class basic { GINAC_DECLARE_REGISTERED_CLASS_NO_CTORS(basic, void) - + friend class ex; - -// member functions - - // default constructor, destructor, copy constructor assignment operator and helpers + + // default ctor, dtor, copy ctor, assignment operator and helpers public: - basic() -#ifdef INLINE_BASIC_CONSTRUCTORS - : tinfo_key(TINFO_basic), flags(0), refcount(0) - { - } -#else -; -#endif // def INLINE_BASIC_CONSTRUCTORS - + basic() : tinfo_key(TINFO_basic), flags(0), refcount(0) {} + /** basic dtor, virtual because class ex will delete objects via ptr. */ virtual ~basic() -#ifdef INLINE_BASIC_CONSTRUCTORS { - destroy(0); + destroy(false); GINAC_ASSERT((!(flags & status_flags::dynallocated))||(refcount==0)); } -#else -; -#endif // def INLINE_BASIC_CONSTRUCTORS - - basic(const basic & other) -#ifdef INLINE_BASIC_CONSTRUCTORS - { - copy(other); - } -#else -; -#endif // def INLINE_BASIC_CONSTRUCTORS - + basic(const basic & other); const basic & operator=(const basic & other); - protected: + /** For use by copy ctor and assignment operator. */ void copy(const basic & other) { flags = other.flags & ~status_flags::dynallocated; hashvalue = other.hashvalue; tinfo_key = other.tinfo_key; } - void destroy(bool call_parent) {} - - // other constructors - basic(unsigned ti) -#ifdef INLINE_BASIC_CONSTRUCTORS - : tinfo_key(ti), flags(0), refcount(0) - { - } -#else -; -#endif // def INLINE_BASIC_CONSTRUCTORS - - // functions overriding virtual functions from bases classes - // none + /** For use by dtor and assignment operator. */ + virtual void destroy(bool call_parent) { } + + // other ctors + /** ctor with specified tinfo_key */ + basic(unsigned ti) : tinfo_key(ti), flags(0), refcount(0) {} // 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 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; - mutable unsigned flags; - mutable unsigned hashvalue; - static unsigned precedence; - static unsigned delta_indent; + unsigned tinfo_key; ///< typeinfo + mutable unsigned flags; ///< of type status_flags + mutable unsigned hashvalue; ///< hash value private: - unsigned refcount; + unsigned refcount; ///< Number of reference counts }; // global variables extern int max_recursion_level; -// convenience macros - -#ifndef NO_NAMESPACE_GINAC - -#define is_of_type(OBJ,TYPE) \ - (dynamic_cast(const_cast(&OBJ))!=0) +// convenience type checker template functions -#define is_exactly_of_type(OBJ,TYPE) \ - ((OBJ).tinfo()==GiNaC::TINFO_##TYPE) - -#define is_ex_of_type(OBJ,TYPE) \ - (dynamic_cast(const_cast((OBJ).bp))!=0) - -#define is_ex_exactly_of_type(OBJ,TYPE) \ - ((*(OBJ).bp).tinfo()==GiNaC::TINFO_##TYPE) - -#else // ndef NO_NAMESPACE_GINAC - -#define is_of_type(OBJ,TYPE) \ - (dynamic_cast(const_cast(&OBJ))!=0) - -#define is_exactly_of_type(OBJ,TYPE) \ - ((OBJ).tinfo()==TINFO_##TYPE) +/** 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(); +} -#define is_ex_of_type(OBJ,TYPE) \ - (dynamic_cast(const_cast((OBJ).bp))!=0) +/** 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); +} -#define is_ex_exactly_of_type(OBJ,TYPE) \ - ((*(OBJ).bp).tinfo()==TINFO_##TYPE) +/** 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); +} -#endif // ndef NO_NAMESPACE_GINAC +/** 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. Hence, you + * should generally check the type of e first. + * + * @param e expression + * @return reference to pseries object + * @see is_exactly_a() */ +template +inline const T &ex_to(const ex &e) +{ + GINAC_ASSERT(is_a(e)); + return static_cast(*e.bp); +} -#ifndef NO_NAMESPACE_GINAC } // namespace GiNaC -#endif // ndef NO_NAMESPACE_GINAC #endif // ndef __GINAC_BASIC_H__