growableArray.hpp

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/* Copyright 1994, 1995 LongView Technologies L.L.C. $Revision: 1.15 $ */
/* Copyright (c) 2006, Sun Microsystems, Inc.
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// A growable array.

typedef void (*voidDoFn)(void* p);
typedef bool (*growableArrayFindFn)(void* token, void* elem);

class GenericGrowableArray : public PrintableResourceObj {
 protected:
  int    len;           // current length
  int    max;           // maximum length
  void** data;          // data array
  bool   on_C_heap;     // is data allocated on C heap?

  void grow(int j);     // grow data array (double length until j is a valid index)

  bool  raw_contains(const void* p) const;
  int   raw_find(const void* p) const; 
  int   raw_find(void* token, growableArrayFindFn f) const; 
  void  raw_remove(const void* p);
  void  raw_apply(voidDoFn f) const;
  void* raw_at_grow(int i, const void* fill);
  void  raw_at_put_grow(int i, const void* p, const void* fill);
  void  raw_appendAll(GenericGrowableArray* l);
  GenericGrowableArray* raw_copy() const;
  void  raw_sort(int f(const void *, const void *));

  GenericGrowableArray(int initial_size, bool on_C_heap = false);
  GenericGrowableArray(int initial_size, int initial_len, void* filler, bool on_C_heap = false);

 public:
  void  clear()                 { len = 0; }
  int   length() const          { return len; }
  int   capacity() const        { return max; }
  bool  isEmpty() const         { return len == 0; }
  bool  nonEmpty() const        { return len != 0; }
  bool  isFull() const          { return len == max; }
  void** data_addr() const      { return data; }        // for sorting

  void print_short();
  void print();
};

template<class E> class GrowableArray : public GenericGrowableArray {
 public:
  GrowableArray(int initial_size, bool on_C_heap = false) : GenericGrowableArray(initial_size, on_C_heap) {}
  GrowableArray(int initial_size, int initial_len, E filler, bool on_C_heap = false) : GenericGrowableArray(initial_size, initial_len, (void*)filler, on_C_heap) {}
  GrowableArray() : GenericGrowableArray(2) {}

  void append(const E elem) {
    if (len == max) grow(len);
    data[len++] = (void*) elem;
  }

  E at(int i) const {
    assert(0 <= i && i < len, "illegal index");
    return (E) data[i];
  }

  E first() const {
    assert(len > 0, "empty list");
    return (E) data[0];
  }

  E last() const {                                                  
    assert(len > 0, "empty list");
    return (E) data[len-1];
  }

  void push(const E elem) { append(elem); }

  E pop() {
    assert(len > 0, "empty list");
    return (E) data[--len];
  }

  E top() const { return last(); }

  void at_put(int i, const E elem) {
    assert(0 <= i && i < len, "illegal index");
    data[i] = (void*) elem;
  }

  E at_grow(int i) {
    assert(0 <= i, "negative index");
    return (E) raw_at_grow(i, NULL);
  }

  void at_put_grow(int i, const E elem) {
    assert(0 <= i, "negative index");
    raw_at_put_grow(i, (void*) elem, NULL);
  }

  void apply(Closure<E>* c) const {
    for (int i = 0; i < len; i++) c->do_it((E)data[i]);
  }

  bool contains(const E elem) const             { return raw_contains((const void*) elem);           }
  int find(const E elem) const                  { return raw_find((const void*) elem);               }
  int find(void* token, bool f(void*, E)) const { return raw_find(token, (growableArrayFindFn)f);    }
  void remove(const E elem)                     { raw_remove((const void*) elem);                    }
  void apply(void f(E)) const                   { raw_apply((voidDoFn)f);                            }
  GrowableArray<E>* copy() const                { return (GrowableArray<E>*) raw_copy();             }
  void appendAll(GrowableArray<E>* l)           { raw_appendAll((GenericGrowableArray*)l);           }
  void sort(int f(E*,E*))                       { raw_sort((int (*)(const void *, const void *)) f); }
};

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