/*
- parray.hh -- declare Pointer_array
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the Flower Library
+ Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ LilyPond 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 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond 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 LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef PARRAY_HH
#include "std-vector.hh"
-/**
- an array of pointers.
+using namespace std;
- TODO
- should init to 0.
-*/
template<class T>
-class Link_array : private Array<void *>
+class Link_array : public vector<T *>
{
- Link_array (Array<void *> const &v)
- :Array<void *> (v)
- {
- }
-
-public:
- Link_array ()
- {
- }
-
- T *const &back() const
- {
- return (T * const &) Array<void *>::back();
- }
-
- T *&back ()
- {
- return (T *&) Array<void *>::back ();
- }
-
- Array<void *>::begin;
- Array<void *>::end;
- Array<void *>::clear;
- Array<void *>::erase;
- Array<void *>::resize;
- Array<void *>::size;
- Array<void *>::empty;
- Array<void *>::pop_back;
-
-
- /* Flower compat */
- Array<void *>::unordered_del;
- Array<void *>::tighten_maxsize;
-
- static int default_compare (T *const &p1, T *const &p2)
- {
- /* can't do p1 -p2, since T might be an incomplete type */
- if (p1 < p2)
- return -1;
- if (p2 < p1)
- return 1;
- return 0;
- }
- Link_array (T *const *tp, int n)
- : Array<void *> ((void **)tp, n)
- {
- }
-
- Link_array (Link_array<T> const &src)
- : Array<void *> (src)
- {
- }
-
- T *at (int i)
- {
- return (T *) Array<void *>::at (i);
- }
- T const *at (int i) const
- {
- return (T const *) Array<void *>::at (i);
- }
-
- /// access element
- T *&operator [] (int i)
- {
- return (T *&) Array<void *>::at (i);
- }
- /// access element
- T *const operator [] (int i) const
- {
- return (T *const) Array<void *>::at (i);
- }
- T *pop ()
- {
- T* t = (T *) Array<void *>::back ();
- pop_back ();
- return t;
- }
- void insert (iterator b, T *t)
- {
- Array<void *>::insert (b, t);
- }
- void insert (iterator pos, const_iterator b, const_iterator e)
- {
- Array<void *>::insert (pos, b, e);
- }
- void push_back (T *t)
- {
- Array<void *>::push_back (t);
- }
-
- /// return last entry
- T *top (int j) const
- {
- return (T *) Array<void *>::top (j);
- }
- T *& top (int i)
- {
- return (T *&) Array<void *>::top (i);
- }
-
- void substitute (T *old, T *new_p)
- {
- int i;
- while ((i = find_index (old)) >= 0)
- if (new_p)
- at (i) = new_p;
- else
- erase (begin () + i);
- }
- void unordered_substitute (T *old, T *new_p)
- {
- int i;
- while ((i = find_index (old)) >= 0)
- if (new_p)
- at (i) = new_p;
- else
- unordered_del (i);
- }
- void default_sort ()
- {
- sort (default_compare);
- }
-
- // quicksort.
- void sort (int (*compare) (T *const &, T *const &),
- int lower = -1, int upper = -1);
-
- void uniq ()
- {
- Link_array<T> ls;
- for (vsize i = 0; i < size (); i++)
- if (!i || at (i - 1) != at (i))
- ls.push_back (at (i));
- *this = ls;
- }
-
- T *& boundary (int d, int i)
- {
- assert (d);
- if (d == 1)
- return top (i);
- else
- return at (i);
- }
- T *boundary (int d, int i)const
- {
- assert (d);
- if (d == 1)
- return top (i);
- else
- return at (i);
- }
-
- T ** accesses () const
- {
- return (T **) Array<void *>::accesses ();
- }
- /**
- remove i-th element, and return it.
- */
- T *get (vsize i)
- {
- T *t = at (i);
- Array<void*>::erase (Array<void*>::begin () + i);
- return t;
- }
- Link_array<T>
- slice (int l, int u) const
- {
- return Array<void *>::Array (begin () + l, begin () + u);
- }
- void concat (Link_array<T> const &a2)
- {
- Array<void *>::insert (end (), a2.begin (), a2.end ());
- }
- int find_index (T const *t) const
- {
- for (vsize i = 0; i < size (); i++)
- if (at (i) == t)
- return i;
- return -1;
- }
- T const *find (T const *t) const
- {
- int i = find_index (t);
- if (i >= 0)
- return at (i);
- else
- return 0;
- }
-
- void swap (vsize i, vsize j)
- {
- T *t ((*this)[i]);
- (*this)[i] = (*this)[j];
- (*this)[j] = t;
- }
- void
- reverse ()
- {
- vsize h = size () / 2;
- for (vsize i = 0, j = size () - 1; i < h; i++, j--)
- swap (i, j);
- }
};
-template<class T, class V>
-Link_array<T>
-typecasts (Link_array<V> const &a, T * /* dummy */)
-{
- Link_array<T> ret;
- for (vsize i = a.size (); i--;)
- ret.push_back (dynamic_cast<T *> (a[i])); // ugh?
- return ret;
-}
-
-template<class T> inline void
-Link_array<T>::sort (int (*compare) (T *const &, T *const &), int lower, int upper)
-{
- if (lower < 0)
- {
- lower = 0;
- upper = size () - 1;
- }
- if (lower >= upper)
- return;
- swap (lower, (lower + upper) / 2);
- int last = lower;
- for (int i = lower +1; i <= upper; i++)
- if (compare (at (i), at (lower)) < 0)
- swap (++last, i);
- swap (lower, last);
- sort (compare, lower, last - 1);
- sort (compare, last + 1, upper);
-}
-
-template<class T>
-void
-junk_pointers (Link_array<T> &a)
-{
- for (vsize i = 0; i < a.size (); i++)
- delete a[i];
- a.clear ();
-}
-
-/*
- lookup with binsearch, return tokencode.
-*/
-template<class T>
-int
-binsearch (Array<T> const &arr, T t, int (*compare) (T const &, T const &))
-{
- int cmp;
- int result;
- int lo = 0;
- int hi = arr.size ();
-
- /* binary search */
- do
- {
- cmp = (lo + hi) / 2;
-
- result = compare (t, arr[cmp]);
-
- if (result < 0)
- hi = cmp;
- else
- lo = cmp;
- }
- while (hi - lo > 1);
-
- if (!compare (t, arr[lo]))
- return lo;
- /* not found */
- return -1;
-}
-
-template<class T>
-int
-binsearch_links (Link_array<T> const &arr, T *t,
- int (*compare) (T *const &, T *const &))
-{
- int cmp;
- int result;
- int lo = 0;
- int hi = arr.size ();
-
- if (hi == 0)
- return -1;
-
- /* binary search */
- do
- {
- cmp = (lo + hi) / 2;
-
- result = (*compare) (t, arr[cmp]);
-
- if (result < 0)
- hi = cmp;
- else
- lo = cmp;
- }
- while (hi - lo > 1);
-
- if (!compare (t, arr[lo]))
- return lo;
- /* not found */
- return -1;
-}
-
-template<class T>
-void
-binary_search_bounds (Link_array<T> const &table,
- T const *key, int (*compare) (T *const &, T *const &),
- int *lo,
- int *hi)
-{
- int cmp;
- int result;
-
- /* binary search */
- do
- {
- cmp = (*lo + *hi) / 2;
-
- result = (*compare) ((T *) key, table[cmp]);
-
- if (result < 0)
- *hi = cmp;
- else
- *lo = cmp;
- }
- while (*hi - *lo > 1);
-}
-
-
#endif // PARRAY_HH
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