private Instruction GetComboInstruction(CharReader cr)
{
var newInstruction = new Instruction(InstructionType.Combo);
while (cr.HasCharacters())
{
var c = cr.GetChar();
if (c == '[' || c == ']' || c == '.' || c == ',')
{
break;
}
if (c == '+')
{
newInstruction.Add();
}
if (c == '-')
{
newInstruction.Subtract();
}
if (c == '<')
{
newInstruction.ShiftLeft();
}
if (c == '>')
{
newInstruction.ShiftRight();
}
cr.Forward();
}
cr.Back();
newInstruction.Complete();
return(newInstruction);
}
public void Run(FileStream source)
{
var pointer = 0;
var memory = new byte[1024 * 1024];
var cr = new CharReader(source);
_seriesCache = new byte[cr.Length];
var jumpTable = new Stack <int>();
while (cr.HasCharacters())
{
var c = cr.GetChar();
switch (c)
{
case '>':
pointer++;
break;
case '<':
pointer--;
break;
case '+':
memory[pointer] += GetSumFromSeries(cr, '+');
break;
case '-':
memory[pointer] -= GetSumFromSeries(cr, '-');
break;
case '.':
Console.Write((char)memory[pointer]);
break;
case ',':
var newChar = Console.Read();
memory[pointer] = (byte)newChar;
break;
case '[':
var nesting = 0;
if (memory[pointer] == 0)
{
while (cr.HasCharacters())
{
cr.Forward();
var tempChar = cr.GetChar();
if (tempChar == ']' && nesting == 0)
{
break;
}
if (tempChar == '[')
{
nesting++;
}
if (tempChar == ']')
{
nesting--;
}
}
}
else
{
jumpTable.Push(cr.Position);
}
break;
case ']':
nesting = 0;
if (memory[pointer] != 0)
{
cr.Position = jumpTable.Peek();
}
else
{
jumpTable.Pop();
}
break;
}
cr.Forward();
}
Console.WriteLine("Cache hits: " + _cacheHits);
Console.WriteLine("Cache misses: " + (_hits - _cacheHits));
}
public void Run(FileStream source)
{
var pointer = 0;
var memory = new byte[1024 * 1024];
var cr = new CharReader(source);
_jumpTableForward = new int[cr.Length];
var jumpTable = new Stack <int>();
while (cr.HasCharacters())
{
var c = cr.GetChar();
switch (c)
{
case '>':
pointer++;
break;
case '<':
pointer--;
break;
case '+':
memory[pointer]++;
break;
case '-':
memory[pointer]--;
break;
case '.':
Console.Write((char)memory[pointer]);
break;
case ',':
var newChar = Console.Read();
memory[pointer] = (byte)newChar;
break;
case '[':
var nesting = 0;
if (memory[pointer] == 0)
{
var startPosition = cr.Position;
if (_jumpTableForward[startPosition] > 0)
{
cr.Position = _jumpTableForward[startPosition] - 1;
}
else
{
while (cr.HasCharacters())
{
cr.Forward();
var tempChar = cr.GetChar();
if (tempChar == ']' && nesting == 0)
{
_jumpTableForward[startPosition] = cr.Position + 1;
break;
}
if (tempChar == '[')
{
nesting++;
}
if (tempChar == ']')
{
nesting--;
}
}
}
}
else
{
jumpTable.Push(cr.Position);
}
break;
case ']':
nesting = 0;
if (memory[pointer] != 0)
{
cr.Position = jumpTable.Peek();
}
else
{
jumpTable.Pop();
}
break;
}
cr.Forward();
}
}
public void Run(FileStream source)
{
var pointer = 0;
var memory = new byte[1024 * 1024];
var cr = new CharReader(source);
while (cr.HasCharacters())
{
var c = cr.GetChar();
switch (c)
{
case '>':
pointer++;
break;
case '<':
pointer--;
break;
case '+':
memory[pointer]++;
break;
case '-':
memory[pointer]--;
break;
case '.':
Console.Write((char)memory[pointer]);
break;
case ',':
var newChar = Console.Read();
memory[pointer] = (byte)newChar;
break;
case '[':
var nesting = 0;
if (memory[pointer] == 0)
{
while (cr.HasCharacters())
{
cr.Forward();
var tempChar = cr.GetChar();
if (tempChar == ']' && nesting == 0)
{
break;
}
if (tempChar == '[')
{
nesting++;
}
if (tempChar == ']')
{
nesting--;
}
}
}
break;
case ']':
nesting = 0;
if (memory[pointer] != 0)
{
while (true)
{
cr.Back();
var tempChar = cr.GetChar();
if (tempChar == '[' && nesting == 0)
{
cr.GetChar(); break;
}
if (tempChar == ']')
{
nesting++;
}
if (tempChar == '[')
{
nesting--;
}
}
}
break;
}
cr.Forward();
}
}
