Online PHP editor | output for bgW9t

@ 2014-02-16T09:32:08Z

<?PHP

class InvalidStateException extends RuntimeException { }

class Compiler {
	private $ptr;
	private $arr;
	private $code;
	private $commands = array('>', '<', '+', '-', '.', ',', '[', ']');
	private $call_stack = array();
	private $cellsize = 8;
	
	public function parseString($code, $throwException = true) {
		$this->code = $code;
		for ($i=0;$i<strlen($this->code);$i++) {
			$c = substr($this->code, $i, 1);
			if (!in_array($c, $this->commands)) {
				continue;
			}
		}
	}
	
	public function execute($code) {
		$this->arr = array(0 => 0);
		$this->ptr = 0;
		$this->code = $code;
		
		for ($this->i=0;$this->i<strlen($this->code);$this->i++) {
			$c = $this->c = substr($this->code, $this->i, 1);
			if (!in_array($c, $this->commands)) {
				continue;
			}
			elseif ($c == '>') {
				$this->increment_pointer();
			}
			elseif ($c == '<') {
				$this->decrement_pointer();
			}
			elseif ($c == '+') {
				$this->increment_val();
			}
			elseif ($c == '-') {
				$this->decrement_val();
			}
			elseif ($c == '.') {
				$this->output_val();
			}
			elseif ($c == ',') {
				$this->store_val($this->input_val());
			}
			elseif ($c == '[') {
				$this->loop($this->i);
			}
		}
	}
	
	private function stack($func) {
		if (is_null($func)) {
			if (count($this->call_stack) == 0) {
				throw new InvalidStateException("Trying to pop empty call stack.");
				return false;
			}
			array_pop($this->call_stack);
			return true;
		}
		else {
			$info = array('command' => $this->c, 'pos' => $this->i, 'internal_function' => $func);
			array_push($this->call_stack, $info);
			return true;
		}
	}
	
	public function minimum_cellsize() {
		return (-1*(pow(2, $this->cellsize-1)));
	}
	
	public function maximum_cellsize() {
		return pow(2, $this->cellsize-1)-1;
	}
	
	private function increment_pointer() {
		$this->stack(__FUNCTION__);
		$this->ptr++;
		if (!isset($this->arr[$this->ptr])) $this->arr[$this->ptr] = 0;
		$this->stack();
		return true;
	}
	
	private function decrement_pointer() {
		$this->stack(__FUNCTION__);
		$this->ptr--;
		if ($this->ptr < 0) {
			throw new IllegalStateException("The data pointer is less than 0.");
			return false;
		}
		$this->stack();
		return true;
	}
	
	private function increment_val() {
		$x = $this->arr[$this->ptr]++;
		if ($x < $this->minimum_cellsize()) {
			$this->arr[$this->ptr] = $this->maximum_cellsize();
		}
		elseif ($x > $this->maximum_cellsize()) {
			$this->arr[$this->ptr] = $this->minimum_cellsize();
		}
		return true;
	}
	
	public function getCallStack() {
		return $this->call_stack;
	}
}

$c = new Compiler();
$bf = '+++++++++ +++++++++ +++++++++ + > +++++++++ +++++++++ +++++++++ ++ < . < .';
$c->execute($bf);

?>

Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Deprecated: Creation of dynamic property Compiler::$i is deprecated in /in/bgW9t on line 28 Deprecated: Creation of dynamic property Compiler::$c is deprecated in /in/bgW9t on line 29 Fatal error: Uncaught ArgumentCountError: Too few arguments to function Compiler::stack(), 0 passed in /in/bgW9t on line 85 and exactly 1 expected in /in/bgW9t:57 Stack trace: #0 /in/bgW9t(85): Compiler->stack() #1 /in/bgW9t(34): Compiler->increment_pointer() #2 /in/bgW9t(118): Compiler->execute('+++++++++ +++++...') #3 {main} thrown in /in/bgW9t on line 57
Process exited with code 255.
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28: Fatal error: Uncaught ArgumentCountError: Too few arguments to function Compiler::stack(), 0 passed in /in/bgW9t on line 85 and exactly 1 expected in /in/bgW9t:57 Stack trace: #0 /in/bgW9t(85): Compiler->stack() #1 /in/bgW9t(34): Compiler->increment_pointer() #2 /in/bgW9t(118): Compiler->execute('+++++++++ +++++...') #3 {main} thrown in /in/bgW9t on line 57
Process exited with code 255.
Output for 7.0.0 - 7.0.20: Warning: Missing argument 1 for Compiler::stack(), called in /in/bgW9t on line 85 and defined in /in/bgW9t on line 57 Notice: Undefined variable: func in /in/bgW9t on line 58 Warning: Missing argument 1 for Compiler::stack(), called in /in/bgW9t on line 96 and defined in /in/bgW9t on line 57 Notice: Undefined variable: func in /in/bgW9t on line 58 Fatal error: Uncaught Error: Call to undefined method Compiler::output_val() in /in/bgW9t:46 Stack trace: #0 /in/bgW9t(118): Compiler->execute('+++++++++ +++++...') #1 {main} thrown in /in/bgW9t on line 46
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28: Warning: Missing argument 1 for Compiler::stack(), called in /in/bgW9t on line 85 and defined in /in/bgW9t on line 57 Notice: Undefined variable: func in /in/bgW9t on line 58 Warning: Missing argument 1 for Compiler::stack(), called in /in/bgW9t on line 96 and defined in /in/bgW9t on line 57 Notice: Undefined variable: func in /in/bgW9t on line 58 Fatal error: Call to undefined method Compiler::output_val() in /in/bgW9t on line 46
Process exited with code 255.
Output for 5.0.0 - 5.0.5: Fatal error: Class 'RuntimeException' not found in /in/bgW9t on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9: Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/bgW9t on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1: Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/bgW9t on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/bgW9t on line 6
Process exited with code 255.

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