public string ProcessCode(string code)
{
byte register = 0;
var pointer = new MemoryCell();
try
{
var output = ProcessCodeBlock(ref pointer, code, ref register);
return output;
}
catch (ArgumentException e)
{
return e.Message;
}
}
public string ProcessCode(string code)
{
byte register = 0;
var pointer = new MemoryCell();
try
{
var output = ProcessCodeBlock(ref pointer, code, ref register);
return(output);
}
catch (ArgumentException e)
{
return(e.Message);
}
}
private string ProcessCodeBlock(ref MemoryCell pointer, string code, ref byte register)
{
var outputBuilder = new StringBuilder();
for (var i = 0; i < code.Length; i++)
{
switch (code[i])
{
case '>':
pointer = pointer.Next;
break;
case '<':
pointer = pointer.Previous;
break;
case '+':
pointer.Value++;
break;
case '-':
pointer.Value--;
break;
/*case 'r':
* register = pointer.Value;
* break;
* case 'w':
* pointer.Value = register;
* break;*/
case '[':
var depth = 0;
var length = -1;
for (var j = i; j < code.Length; j++)
{
if (code[j] == '[')
{
depth++;
}
else if (code[j] == ']')
{
depth--;
if (depth == 0)
{
length = j - i;
break;
}
}
}
if (length == -1)
{
Logger.Log(this, depth.ToString());
throw new ArgumentException("Syntax Error: '[' and ']' do not match up.");
}
while (pointer.Value != 0)
{
var codeBlock = code.Substring(i + 1, length - 1);
outputBuilder.Append(ProcessCodeBlock(ref pointer, codeBlock, ref register));
}
i += length;
break;
case '.':
outputBuilder.Append(Encoding.ASCII.GetString(new[] { pointer.Value }));
break;
}
}
return(outputBuilder.ToString());
}
private string ProcessCodeBlock(ref MemoryCell pointer, string code, ref byte register)
{
var outputBuilder = new StringBuilder();
for (var i = 0; i < code.Length; i++)
{
switch (code[i])
{
case '>':
pointer = pointer.Next;
break;
case '<':
pointer = pointer.Previous;
break;
case '+':
pointer.Value++;
break;
case '-':
pointer.Value--;
break;
/*case 'r':
register = pointer.Value;
break;
case 'w':
pointer.Value = register;
break;*/
case '[':
var depth = 0;
var length = -1;
for (var j = i; j < code.Length; j++)
{
if (code[j] == '[')
{
depth++;
}
else if (code[j] == ']')
{
depth--;
if (depth == 0)
{
length = j - i;
break;
}
}
}
if (length == -1)
{
Logger.Log(this, depth.ToString());
throw new ArgumentException("Syntax Error: '[' and ']' do not match up.");
}
while (pointer.Value != 0)
{
var codeBlock = code.Substring(i + 1, length - 1);
outputBuilder.Append(ProcessCodeBlock(ref pointer, codeBlock, ref register));
}
i += length;
break;
case '.':
outputBuilder.Append(Encoding.ASCII.GetString(new[] { pointer.Value }));
break;
}
}
return outputBuilder.ToString();
}
