home *** CD-ROM | disk | FTP | other *** search
- // Main templates for the -*- C++ -*- string classes.
- // Copyright (C) 1994, 1995 Free Software Foundation
-
- // This file is part of the GNU ANSI C++ Library. This library is free
- // software; you can redistribute it and/or modify it under the
- // terms of the GNU General Public License as published by the
- // Free Software Foundation; either version 2, or (at your option)
- // any later version.
-
- // This library is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- // GNU General Public License for more details.
-
- // You should have received a copy of the GNU General Public License
- // along with this library; see the file COPYING. If not, write to the Free
- // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- // As a special exception, if you link this library with files
- // compiled with a GNU compiler to produce an executable, this does not cause
- // the resulting executable to be covered by the GNU General Public License.
- // This exception does not however invalidate any other reasons why
- // the executable file might be covered by the GNU General Public License.
-
- // Written by Jason Merrill based upon the specification by Takanori Adachi
- // in ANSI X3J16/94-0013R2.
-
- #ifndef __BASTRING__
- #define __BASTRING__
-
- #ifdef __GNUG__
- #pragma interface
- #endif
-
- #include <std/stddef.h>
- #include <std/straits.h>
-
- #if _G_USE_EXCEPTIONS
-
- #include <stdexcept>
- #define OUTOFRANGE(cond) \
- do { if (!(cond)) throw out_of_range (#cond); } while (0)
- #define LENGTHERROR(cond) \
- do { if (!(cond)) throw length_error (#cond); } while (0)
-
- #else
-
- #include <cassert>
- #define OUTOFRANGE(cond) assert (!(cond))
- #define LENGTHERROR(cond) assert (!(cond))
-
- #endif
-
- extern "C++" {
- class istream; class ostream;
-
- // Should be a nested class basic_string<charT, traits>::Rep, but nested
- // classes don't work well with templates in g++.
- template <class charT, class traits = string_char_traits<charT> >
- struct __bsrep {
- typedef __bsrep Rep;
-
- size_t len, res, ref;
- bool selfish;
-
- charT* data () { return reinterpret_cast<charT *>(this + 1); }
- charT& operator[] (size_t s) { return data () [s]; }
- charT* grab () { if (selfish) return clone (); ++ref; return data (); }
- void release () { if (--ref == 0) delete this; }
-
- inline static void * operator new (size_t, size_t);
- inline static Rep* create (size_t);
- charT* clone ();
-
- inline void copy (size_t, const charT *, size_t);
- inline void move (size_t, const charT *, size_t);
- inline void set (size_t, const charT, size_t);
-
- #if _G_ALLOC_CONTROL
- // These function pointers allow you to modify the allocation policy used
- // by the string classes. By default they expand by powers of two, but
- // this may be excessive for space-critical applications.
-
- // Returns true if ALLOCATED is too much larger than LENGTH
- static bool (*excess_slop) (size_t length, size_t allocated);
- inline static bool default_excess (size_t, size_t);
-
- // Returns a good amount of space to allocate for a string of length LENGTH
- static size_t (*frob_size) (size_t length);
- inline static size_t default_frob (size_t);
- #else
- inline static bool excess_slop (size_t, size_t);
- inline static size_t frob_size (size_t);
- #endif
-
- private:
- Rep &operator= (const Rep &);
- };
-
- // #include <iterator.h>
-
- template <class charT, class traits = string_char_traits<charT> >
- class basic_string
- {
- private:
- typedef __bsrep<charT, traits> Rep;
-
- public:
- // types:
- typedef traits traits_type;
- typedef charT value_type;
- typedef size_t size_type;
- typedef ptrdiff_t difference_type;
- typedef charT& reference;
- typedef const charT& const_reference;
- typedef charT* pointer;
- typedef const charT* const_pointer;
- typedef pointer iterator;
- typedef const_pointer const_iterator;
- #if 0
- typedef reverse_iterator<iterator, value_type,
- reference, difference_type> reverse_iterator;
- typedef reverse_iterator<const_iterator, value_type, const_reference,
- difference_type> const_reverse_iterator;
- #endif
- static const size_type npos = static_cast<size_type>(-1);
-
- private:
- Rep *rep () const { return reinterpret_cast<Rep *>(dat) - 1; }
- void repup (Rep *p) { rep ()->release (); dat = p->data (); }
-
- public:
- const charT* data () const
- { return rep ()->data(); }
- size_type length () const
- { return rep ()->len; }
- size_type size () const
- { return rep ()->len; }
- size_type capacity () const
- { return rep ()->res; }
- size_type max_size () const
- { return npos - 1; } // XXX
- bool empty () const
- { return size () == 0; }
-
- // _lib.string.cons_ construct/copy/destroy:
- basic_string& operator= (const basic_string& str)
- {
- if (&str != this) { rep ()->release (); dat = str.rep ()->grab (); }
- return *this;
- }
-
- explicit basic_string (): dat (nilRep.grab ()) { }
- basic_string (const basic_string& str): dat (str.rep ()->grab ()) { }
- basic_string (const basic_string& str, size_type pos, size_type n = npos)
- : dat (nilRep.grab ()) { assign (str, pos, n); }
- basic_string (const charT* s, size_type n)
- : dat (nilRep.grab ()) { assign (s, n); }
- basic_string (const charT* s)
- : dat (nilRep.grab ()) { assign (s); }
- basic_string (size_type n, charT c)
- : dat (nilRep.grab ()) { assign (n, c); }
- #if 0
- template<class InputIterator>
- basic_string(InputIterator begin, InputIterator end,
- Allocator& = Allocator());
- #endif
-
- ~basic_string ()
- { rep ()->release (); }
-
- void swap (basic_string &s) { charT *d = dat; dat = s.dat; s.dat = d; }
-
- basic_string& append (const basic_string& str, size_type pos = 0,
- size_type n = npos)
- { return replace (length (), 0, str, pos, n); }
- basic_string& append (const charT* s, size_type n)
- { return replace (length (), 0, s, n); }
- basic_string& append (const charT* s)
- { return append (s, traits::length (s)); }
- basic_string& append (size_type n, charT c)
- { return replace (length (), 0, n, c); }
- #if 0
- template<class InputIterator>
- basic_string& append(InputIterator first, InputIterator last);
- #endif
-
- basic_string& assign (const basic_string& str, size_type pos = 0,
- size_type n = npos)
- { return replace (0, npos, str, pos, n); }
- basic_string& assign (const charT* s, size_type n)
- { return replace (0, npos, s, n); }
- basic_string& assign (const charT* s)
- { return assign (s, traits::length (s)); }
- basic_string& assign (size_type n, charT c)
- { return replace (0, npos, n, c); }
- #if 0
- template<class InputIterator>
- basic_string& assign(InputIterator first, InputIterator last);
- #endif
-
- basic_string& operator= (const charT* s)
- { return assign (s); }
- basic_string& operator= (charT c)
- { return assign (1, c); }
-
- basic_string& operator+= (const basic_string& rhs)
- { return append (rhs); }
- basic_string& operator+= (const charT* s)
- { return append (s); }
- basic_string& operator+= (charT c)
- { return append (1, c); }
-
- basic_string& insert (size_type pos1, const basic_string& str,
- size_type pos2 = 0, size_type n = npos)
- { return replace (pos1, 0, str, pos2, n); }
- basic_string& insert (size_type pos, const charT* s, size_type n)
- { return replace (pos, 0, s, n); }
- basic_string& insert (size_type pos, const charT* s)
- { return insert (pos, s, traits::length (s)); }
- basic_string& insert (size_type pos, size_type n, charT c)
- { return replace (pos, 0, n, c); }
- iterator insert(iterator p, charT c)
- { insert (p - begin (), 1, c); return p; }
- iterator insert(iterator p, size_type n, charT c)
- { insert (p - begin (), n, c); return p; }
- #if 0
- template<class InputIterator>
- void insert(iterator p, InputIterator first, InputIterator last);
- #endif
-
- basic_string& remove (size_type pos = 0, size_type n = npos)
- { return replace (pos, n, 0, (charT)0); }
- basic_string& remove (iterator pos)
- { return replace (pos - begin (), 1, 0, (charT)0); }
- basic_string& remove (iterator first, iterator last)
- { return replace (first - begin (), last - first, 0, (charT)0); }
-
- basic_string& replace (size_type pos1, size_type n1, const basic_string& str,
- size_type pos2 = 0, size_type n2 = npos);
- basic_string& replace (size_type pos, size_type n1, const charT* s,
- size_type n2);
- basic_string& replace (size_type pos, size_type n1, const charT* s)
- { return replace (pos, n1, s, traits::length (s)); }
- basic_string& replace (size_type pos, size_type n1, size_type n2, charT c);
- basic_string& replace (size_type pos, size_type n, charT c)
- { return replace (pos, n, 1, c); }
- basic_string& replace (iterator i1, iterator i2, const basic_string& str)
- { return replace (i1 - begin (), i2 - i1, str); }
- basic_string& replace (iterator i1, iterator i2, const charT* s, size_type n)
- { return replace (i1 - begin (), i2 - i1, s, n); }
- basic_string& replace (iterator i1, iterator i2, const charT* s)
- { return replace (i1 - begin (), i2 - i1, s); }
- basic_string& replace (iterator i1, iterator i2, size_type n, charT c)
- { return replace (i1 - begin (), i2 - i1, n, c); }
- #if 0
- template<class InputIterator>
- basic_string& replace(iterator i1, iterator i2,
- InputIterator j1, InputIterator j2);
- #endif
-
- private:
- static charT eos () { return traits::eos (); }
- void unique () { if (rep ()->ref > 1) alloc (capacity (), true); }
- void selfish () { unique (); rep ()->selfish = true; }
-
- public:
- charT operator[] (size_type pos) const
- {
- if (pos == length ())
- return eos ();
- return data ()[pos];
- }
-
- reference operator[] (size_type pos)
- { unique (); return (*rep ())[pos]; }
-
- reference at (size_type pos)
- {
- OUTOFRANGE (pos >= length ());
- return (*this)[pos];
- }
- const_reference at (size_type pos) const
- {
- OUTOFRANGE (pos >= length ());
- return data ()[pos];
- }
-
- private:
- void terminate () const
- { traits::assign ((*rep ())[length ()], eos ()); }
-
- public:
- const charT* c_str () const
- { terminate (); return data (); }
- void resize (size_type n, charT c);
- void resize (size_type n)
- { resize (n, eos ()); }
- void reserve (size_type) { }
-
- size_type copy (charT* s, size_type n, size_type pos = 0);
-
- size_type find (const basic_string& str, size_type pos = 0) const
- { return find (str.data(), pos, str.length()); }
- size_type find (const charT* s, size_type pos, size_type n) const;
- size_type find (const charT* s, size_type pos = 0) const
- { return find (s, pos, traits::length (s)); }
- size_type find (charT c, size_type pos = 0) const;
-
- size_type rfind (const basic_string& str, size_type pos = npos) const
- { return rfind (str.data(), pos, str.length()); }
- size_type rfind (const charT* s, size_type pos, size_type n) const;
- size_type rfind (const charT* s, size_type pos = npos) const
- { return rfind (s, pos, traits::length (s)); }
- size_type rfind (charT c, size_type pos = npos) const;
-
- size_type find_first_of (const basic_string& str, size_type pos = 0) const
- { return find_first_of (str.data(), pos, str.length()); }
- size_type find_first_of (const charT* s, size_type pos, size_type n) const;
- size_type find_first_of (const charT* s, size_type pos = 0) const
- { return find_first_of (s, pos, traits::length (s)); }
- size_type find_first_of (charT c, size_type pos = 0) const
- { return find (c, pos); }
-
- size_type find_last_of (const basic_string& str, size_type pos = npos) const
- { return find_last_of (str.data(), pos, str.length()); }
- size_type find_last_of (const charT* s, size_type pos, size_type n) const;
- size_type find_last_of (const charT* s, size_type pos = npos) const
- { return find_last_of (s, pos, traits::length (s)); }
- size_type find_last_of (charT c, size_type pos = npos) const
- { return rfind (c, pos); }
-
- size_type find_first_not_of (const basic_string& str, size_type pos = 0) const
- { return find_first_not_of (str.data(), pos, str.length()); }
- size_type find_first_not_of (const charT* s, size_type pos, size_type n) const;
- size_type find_first_not_of (const charT* s, size_type pos = 0) const
- { return find_first_not_of (s, pos, traits::length (s)); }
- size_type find_first_not_of (charT c, size_type pos = 0) const;
-
- size_type find_last_not_of (const basic_string& str, size_type pos = npos) const
- { return find_last_not_of (str.data(), pos, str.length()); }
- size_type find_last_not_of (const charT* s, size_type pos, size_type n) const;
- size_type find_last_not_of (const charT* s, size_type pos = npos) const
- { return find_last_not_of (s, pos, traits::length (s)); }
- size_type find_last_not_of (charT c, size_type pos = npos) const;
-
- basic_string substr (size_type pos = 0, size_type n = npos) const
- { return basic_string (*this, pos, n); }
-
- int compare (const basic_string& str, size_type pos = 0, size_type n = npos) const;
- // There is no 'strncmp' equivalent for charT pointers.
- int compare (const charT* s, size_type pos, size_type n) const;
- int compare (const charT* s, size_type pos = 0) const
- { return compare (s, pos, traits::length (s)); }
-
- iterator begin () { selfish (); return &(*this)[0]; }
- iterator end () { selfish (); return &(*this)[length ()]; }
- const_iterator begin () const { return &(*rep ())[0]; }
- const_iterator end () const { return &(*rep ())[length ()]; }
-
- #if 0
- reverse_iterator rbegin() { return reverse_iterator (end ()); }
- const_reverse_iterator rbegin() const
- { return const_reverse_iterator (end ()); }
- reverse_iterator rend() { return reverse_iterator (begin ()); }
- const_reverse_iterator rend() const
- { return const reverse_iterator (begin ()); }
- #endif
-
- private:
- void alloc (size_type size, bool save);
- static size_type _find (const charT* ptr, charT c, size_type xpos, size_type len);
- inline bool check_realloc (size_type s) const;
-
- static Rep nilRep;
- charT *dat;
- };
-
- template <class charT, class traits>
- inline basic_string <charT, traits>
- operator+ (const basic_string <charT, traits>& lhs,
- const basic_string <charT, traits>& rhs)
- {
- basic_string <charT, traits> str (lhs);
- str.append (rhs);
- return str;
- }
-
- template <class charT, class traits>
- inline basic_string <charT, traits>
- operator+ (const charT* lhs, const basic_string <charT, traits>& rhs)
- {
- basic_string <charT, traits> str (lhs);
- str.append (rhs);
- return str;
- }
-
- template <class charT, class traits>
- inline basic_string <charT, traits>
- operator+ (charT lhs, const basic_string <charT, traits>& rhs)
- {
- basic_string <charT, traits> str (1, lhs);
- str.append (rhs);
- return str;
- }
-
- template <class charT, class traits>
- inline basic_string <charT, traits>
- operator+ (const basic_string <charT, traits>& lhs, const charT* rhs)
- {
- basic_string <charT, traits> str (lhs);
- str.append (rhs);
- return str;
- }
-
- template <class charT, class traits>
- inline basic_string <charT, traits>
- operator+ (const basic_string <charT, traits>& lhs, charT rhs)
- {
- basic_string <charT, traits> str (lhs);
- str.append (1, rhs);
- return str;
- }
-
- template <class charT, class traits>
- inline bool
- operator== (const basic_string <charT, traits>& lhs,
- const basic_string <charT, traits>& rhs)
- {
- return (lhs.compare (rhs) == 0);
- }
-
- template <class charT, class traits>
- inline bool
- operator== (const charT* lhs, const basic_string <charT, traits>& rhs)
- {
- return (rhs.compare (lhs) == 0);
- }
-
- template <class charT, class traits>
- inline bool
- operator== (const basic_string <charT, traits>& lhs, const charT* rhs)
- {
- return (lhs.compare (rhs) == 0);
- }
-
- template <class charT, class traits>
- inline bool
- operator!= (const charT* lhs, const basic_string <charT, traits>& rhs)
- {
- return (rhs.compare (lhs) != 0);
- }
-
- template <class charT, class traits>
- inline bool
- operator!= (const basic_string <charT, traits>& lhs, const charT* rhs)
- {
- return (lhs.compare (rhs) != 0);
- }
-
- template <class charT, class traits>
- inline bool
- operator< (const basic_string <charT, traits>& lhs,
- const basic_string <charT, traits>& rhs)
- {
- return (lhs.compare (rhs) < 0);
- }
-
- template <class charT, class traits>
- inline bool
- operator< (const charT* lhs, const basic_string <charT, traits>& rhs)
- {
- return (rhs.compare (lhs) > 0);
- }
-
- template <class charT, class traits>
- inline bool
- operator< (const basic_string <charT, traits>& lhs, const charT* rhs)
- {
- return (lhs.compare (rhs) < 0);
- }
-
- template <class charT, class traits>
- inline bool
- operator> (const charT* lhs, const basic_string <charT, traits>& rhs)
- {
- return (rhs.compare (lhs) < 0);
- }
-
- template <class charT, class traits>
- inline bool
- operator> (const basic_string <charT, traits>& lhs, const charT* rhs)
- {
- return (lhs.compare (rhs) > 0);
- }
-
- template <class charT, class traits>
- inline bool
- operator<= (const charT* lhs, const basic_string <charT, traits>& rhs)
- {
- return (rhs.compare (lhs) >= 0);
- }
-
- template <class charT, class traits>
- inline bool
- operator<= (const basic_string <charT, traits>& lhs, const charT* rhs)
- {
- return (lhs.compare (rhs) <= 0);
- }
-
- template <class charT, class traits>
- inline bool
- operator>= (const charT* lhs, const basic_string <charT, traits>& rhs)
- {
- return (rhs.compare (lhs) <= 0);
- }
-
- template <class charT, class traits>
- inline bool
- operator>= (const basic_string <charT, traits>& lhs, const charT* rhs)
- {
- return (lhs.compare (rhs) >= 0);
- }
-
- // Kludge this until g++ supports the new template overloading semantics.
- #if !defined(FUNCTION_H)
- template <class charT, class traits>
- inline bool
- operator!= (const basic_string <charT, traits>& lhs,
- const basic_string <charT, traits>& rhs)
- {
- return (lhs.compare (rhs) != 0);
- }
-
- template <class charT, class traits>
- inline bool
- operator> (const basic_string <charT, traits>& lhs,
- const basic_string <charT, traits>& rhs)
- {
- return (lhs.compare (rhs) > 0);
- }
-
- template <class charT, class traits>
- inline bool
- operator<= (const basic_string <charT, traits>& lhs,
- const basic_string <charT, traits>& rhs)
- {
- return (lhs.compare (rhs) <= 0);
- }
-
- template <class charT, class traits>
- inline bool
- operator>= (const basic_string <charT, traits>& lhs,
- const basic_string <charT, traits>& rhs)
- {
- return (lhs.compare (rhs) >= 0);
- }
- #endif
-
- class istream; class ostream;
- template <class charT, class traits> istream&
- operator>> (istream&, basic_string <charT, traits>&);
- template <class charT, class traits> ostream&
- operator<< (ostream&, const basic_string <charT, traits>&);
- template <class charT, class traits> istream&
- getline (istream&, basic_string <charT, traits>&, charT delim = '\n');
-
- } // extern "C++"
-
- #if !defined (_G_NO_EXTERN_TEMPLATES)
- #include <std/sinst.h>
- #endif
-
- #endif
-