// trseize.cpp -- Regression test program, resizing tests
// $Id$
// This is part of Metakit, see http://www.equi4.com/metakit/

#include "regress.h"

#include <stdlib.h>   // strtol
#include <string.h>   // memory functions

class CResizer : public c4_Storage
{
public:
  CResizer (const char* file);
  ~CResizer ();

  void Verify();

  int Ins(int, int);
  int Del(int, int);

private:
  enum { kMaxData = 15000 };
  char* _refData;
  int _refSize;

  c4_View _attached;
  c4_View _unattached;
  c4_IntProp _prop;

  char _seed;

  CResizer (const CResizer&);     // not implemented
  void operator= (const CResizer&); // not implemented
};

CResizer::CResizer (const char* file)
  : c4_Storage (file, 1), _refSize (0), _prop ("p1"), _seed (0)
{
  SetStructure("a[p1:I]");
  
  _refData = new char [kMaxData];
  
  _attached = View("a");

  Verify();
}

CResizer::~CResizer ()
{
  Verify();

  Commit();

  Verify();
  
  delete [] _refData;
}

void CResizer::Verify()
{
  int i;

  A(_refSize == _unattached.GetSize());
  A(_refSize == _attached.GetSize());

  for (i = 0; i < _refSize; ++i)
  {
    A(_refData[i] == _prop (_unattached[i]));
    A(_refData[i] == _prop (_attached[i]));
  }
}

int CResizer::Ins(int pos_, int cnt_)
{
  A(pos_ <= _refSize);
  A(_refSize + cnt_ < kMaxData);

  memmove(_refData + pos_ + cnt_, _refData + pos_, _refSize - pos_);
  _refSize += cnt_;

  c4_Row row;
  _unattached.InsertAt(pos_, row, cnt_);
  _attached.InsertAt(pos_, row, cnt_);

  for (int i = pos_; i < pos_ + cnt_; ++i)  
  {
    _refData[i] = ++_seed;
    _prop (_unattached[i]) = _seed;
    _prop (_attached[i]) = _seed;

    if (_seed >= 123)
      _seed = 0;
  }

  Verify();

  return _refSize;
}

int CResizer::Del(int pos_, int cnt_)
{
  A(pos_ + cnt_ <= _refSize);

  _refSize -= cnt_;
  memmove(_refData + pos_, _refData + pos_ + cnt_, _refSize - pos_); 

  _unattached.RemoveAt(pos_, cnt_);
  _attached.RemoveAt(pos_, cnt_);

  Verify();

  return _refSize;
}

void TestResize()
{
  B(r00, Simple insert, 0) W(r00a);
  {
    CResizer r1 ("r00a");
    
    int n = r1.Ins(0, 250);
      A(n == 250);

  } D(r00a); R(r00a); E;

  B(r01, Simple removes, 0) W(r01a);
  {
    CResizer r1 ("r01a");
    int n;
    
    n = r1.Ins(   0,  500);   A(n ==   500);

    n = r1.Del(   0,   50);   A(n ==   450);
    n = r1.Del( 350,  100);   A(n ==   350);
    n = r1.Del(  25,  150);   A(n ==   200);
    n = r1.Del(   0,  200);   A(n ==     0);

    n = r1.Ins(   0,   15);   A(n ==    15);

  } D(r01a); R(r01a); E;

  B(r02, Large inserts and removes, 0) W(r02a);
  { 
    int big = sizeof (int) == sizeof (short) ? 1000 : 4000;
    
    CResizer r1 ("r02a");
    int n;
    
    n = r1.Ins(   0, 2000);     A(n ==  2000);
    n = r1.Ins(   0, 3000);     A(n ==  5000);
    n = r1.Ins(5000, 1000 + big); A(n ==  6000 + big);
    n = r1.Ins( 100,   10);     A(n ==  6010 + big);
    n = r1.Ins(4000,  100);     A(n ==  6110 + big);
    n = r1.Ins(   0, 1001);     A(n ==  7111 + big);

    n = r1.Del(7111,  big);     A(n ==  7111);
    n = r1.Del(   0, 4111);     A(n ==  3000);
    n = r1.Del(  10,   10);     A(n ==  2990);
    n = r1.Del(  10,   10);     A(n ==  2980);
    n = r1.Del(   5,   10);     A(n ==  2970);
    n = r1.Del(   0,  990);     A(n ==  1980);
    n = r1.Del(   3, 1975);     A(n ==     5);

  } D(r02a); R(r02a); E;

  B(r03, Binary property insertions, 0) W(r03a);
  {
    c4_BytesProp p1 ("p1");
    c4_Storage s1 ("r03a", 1);
    s1.SetStructure("a[p1:B]");
    c4_View v1 = s1.View("a");
    
    char buf [1024];

    memset(buf, 0x11, sizeof buf);
    v1.Add(p1 [c4_Bytes (buf, sizeof buf)]);
    
    memset(buf, 0x22, sizeof buf);
    v1.Add(p1 [c4_Bytes (buf, sizeof buf / 2)]);

    s1.Commit();

    memset(buf, 0x33, sizeof buf);
    p1 (v1[1]) = c4_Bytes (buf, sizeof buf); // fix c4_Column::CopyData

    memset(buf, 0x44, sizeof buf);
    v1.Add(p1 [c4_Bytes (buf, sizeof buf / 3)]);

    s1.Commit();

    memset(buf, 0x55, sizeof buf);
    v1.InsertAt(1, p1 [c4_Bytes (buf, sizeof buf)]);

    memset(buf, 0x66, sizeof buf);
    v1.InsertAt(1, p1 [c4_Bytes (buf, sizeof buf / 4)]);

    s1.Commit();

  } D(r03a); R(r03a); E;

  B(r04, Scripted string property tests, 0) W(r04a);
  {
    c4_StringProp p1 ("p1");
    c4_Storage s1 ("r04a", 1);
    s1.SetStructure("a[p1:S]");

      // This code implements a tiny language to specify tests in:
      //
      //  "<X>,<Y>A"  add X partial buffers of size Y
      //  "<X>a"    add X full buffers at end
      //  "<X>,<Y>C"  change entry X to a partial buffer of size Y
      //  "<X>c"    change entry at position X to a full buffer
      //  "<X>,<Y>I"  insert partial buffer of size Y at position X
      //  "<X>i"    insert a full buffer at position X
      //  "<X>,<Y>R"  remove Y entries at position X
      //  "<X>r"    remove one entry at position X
      //
      //  ">"     commit changes
      //  "<"     rollback changes
      //
      //  " "     ignore spaces
      //  "<X>,"    for additional args
      //  "<X>="    verify number of rows is X

    const char* scripts [] =
    {
    //   A  B  C  D    E    F   G    H    I J
      "5a 5a 5a 1r   5r   10r   6r     2r   > 10=",
      "5a 5a 5a 1,200C 5,200C 10,200C 6,200C 2,200C > 15=",
      "5a 5a 5a 1,300C 5,300C 10,300C 6,300C 2,300C > 15=",

    //   A   B   C   D     E     F      G     H     I J
      "50a 50a 50a 10r   50r   100r   60r   20r   > 145=",
      "50a 50a 50a 10,200C 50,200C 100,200C 60,200C 20,200C > 150=",
      "50a 50a 50a 10,300C 50,300C 100,300C 60,300C 20,300C > 150=",

    //   A     B   C     D   E   F  G H I J
      "50,0A 50,0A 50,0A 10c 50c 100c 60c 20c > 150=", // asserts in 1.7b1

    //   A    B   C  D E
      "3,3A 1,10C 1,1C > 3=", // asserts in 1.7 - June 6 build

      "",
      0
    };

    for (int i = 0; scripts[i]; ++i)
    {
      c4_View v1 = s1.View("a");
      v1.RemoveAll();
      s1.Commit();
        A(v1.GetSize() == 0); // start with a clean slate each time

      const char* p = scripts[i];

      char fill = '@';
      int save = 0;
      c4_Row row;

      while (*p)
      {
          // default is a string of 255 chars (with additional null byte)
        p1 (row) = c4_String (++fill, 255);

        int arg = (int) strtol(p, (char**) &p, 10); // loses const

        switch (*p++)
        {
          case 'A': p1 (row) = c4_String (fill, arg); arg = save;
          case 'a': while (--arg >= 0) v1.Add(row); break;
          case 'C': p1 (row) = c4_String (fill, arg); arg = save;
          case 'c': v1.SetAt(arg, row); break;
          case 'I': p1 (row) = c4_String (fill, arg); arg = save;
          case 'i': v1.InsertAt(arg, row); break;
          case 'R': v1.RemoveAt(save, arg); break;
          case 'r': v1.RemoveAt(arg); break;
          case '>': s1.Commit(); break;
          case '<': s1.Rollback(); v1 = s1.View("a"); break;
          case ' ': break;
          case ',': save = arg; break;
          case '=': A(v1.GetSize() == arg); break;
        }
      }
    }
  
    s1.Commit();

  } D(r04a); R(r04a); E;
}