public static void Run(string program, Func <int> read, Action <char> write)
{
var runner = new ProgramRunner(program);
runner.RegisterCommand('<', b => b.StatePointer--);
runner.RegisterCommand('>', b => b.StatePointer++);
runner.RegisterCommand('+', b => b.State[b.StatePointer]++);
runner.RegisterCommand('-', b => b.State[b.StatePointer]--);
runner.RegisterCommand('.', b => write((char)b.State[b.StatePointer]));
runner.RegisterCommand(',', b => b.State[b.StatePointer] = (byte)read());
var pairBrackets = FindPairBrackets(program);
Action <ProgramRunner, Func <bool> > jumpToPairBracket = (b, predicate) =>
{
if (predicate())
{
b.ProgramPointer = pairBrackets[b.ProgramPointer];
}
};
runner.RegisterCommand('[', b => jumpToPairBracket(b, () => b.State[b.StatePointer] == 0));
runner.RegisterCommand(']', b => jumpToPairBracket(b, () => b.State[b.StatePointer] != 0));
runner.Run();
}
static void GetConstans(ProgramRunner runner)
{
for (char i = '0'; i <= '9'; i++)
{
var j = i;
runner.RegisterCommand(j, b => b.Memory[b.MemoryPointer] = (byte)j);
}
for (char i = 'A'; i <= 'Z'; i++)
{
var j = i;
runner.RegisterCommand(j, b => b.Memory[b.MemoryPointer] = (byte)j);
runner.RegisterCommand(char.ToLower(j), b => b.Memory[b.MemoryPointer] = (byte)char.ToLower(j));
}
}
static void Cycles(ProgramRunner runner)
{
var openBrackets = new int[runner.Instructions.Length];
var closeBrackets = new int[runner.Instructions.Length];
var bracketsStack = new Stack <int>();
for (int i = 0; i < runner.Instructions.Length; i++)
{
if (runner.Instructions[i] == '[')
{
bracketsStack.Push(i);
}
if (runner.Instructions[i] == ']')
{
var openBracket = bracketsStack.Pop();
closeBrackets[openBracket] = i;
openBrackets[i] = openBracket;
}
}
runner.RegisterCommand('[', b =>
{
if (b.Memory[b.MemoryPointer] == 0)
{
b.InstructionPointer = closeBrackets[b.InstructionPointer];
}
});
runner.RegisterCommand(']', b =>
{
if (b.Memory[b.MemoryPointer] != 0)
{
b.InstructionPointer = openBrackets[b.InstructionPointer];
}
});
}
public static void Run(string program, Func <int> read, Action <char> write)
{
var runner = new ProgramRunner(program);
runner.RegisterCommand('<', b =>
{
if (b.MemoryPointer == 0)
{
b.MemoryPointer = 29999;
}
else
{
b.MemoryPointer--;
}
});
runner.RegisterCommand('>', b =>
{
if (b.MemoryPointer == 29999)
{
b.MemoryPointer = 0;
}
else
{
b.MemoryPointer++;
}
});
runner.RegisterCommand('+', b => b.Memory[b.MemoryPointer]++);
runner.RegisterCommand('-', b => b.Memory[b.MemoryPointer]--);
runner.RegisterCommand('.', b => write((char)b.Memory[b.MemoryPointer]));
runner.RegisterCommand(',', b => b.Memory[b.MemoryPointer] = (byte)read());
Cycles(runner);
GetConstans(runner);
runner.Run();
}