/**
* Calculate cyclomatic complexity number
*
* We can calculate ccn in two ways (we choose the second):
*
* 1. Cyclomatic complexity (CC) = E - N + 2P
* Where:
* P = number of disconnected parts of the flow graph (e.g. a calling program and a subroutine)
* E = number of edges (transfers of control)
* N = number of nodes (sequential group of statements containing only one transfer of control)
*
* 2. CC = Number of each decision point
*
* @param string $filename
* @return Result
*/
public function calculate($filename)
{
$info = new Result();
$tokens = $this->tokenizer->tokenize($filename);
$ccn = 0;
foreach ($tokens as $token) {
switch ($token->getType()) {
case T_IF:
case T_ELSEIF:
case T_FOREACH:
case T_FOR:
case T_WHILE:
case T_DO:
case T_BOOLEAN_AND:
case T_LOGICAL_AND:
case T_BOOLEAN_OR:
case T_LOGICAL_OR:
case T_CASE:
case T_DEFAULT:
case T_CATCH:
case T_CONTINUE:
$ccn++;
break;
}
}
$info->setCyclomaticComplexityNumber(max(1, $ccn));
return $info;
}
/**
* Calculate cyclomatic complexity number
*
* We can calculate ccn in two ways (we choose the second):
*
* 1. Cyclomatic complexity (CC) = E - N + 2P
* Where:
* P = number of disconnected parts of the flow graph (e.g. a calling program and a subroutine)
* E = number of edges (transfers of control)
* N = number of nodes (sequential group of statements containing only one transfer of control)
*
* 2. CC = Number of each decision point
*
* @param string $filename
* @return Result
*/
public function calculate($filename)
{
$info = new Result();
$tokens = $this->tokenizer->tokenize($filename);
$ccn = 1;
// default path
foreach ($tokens as $token) {
switch ($token->getType()) {
case T_IF:
case T_ELSEIF:
case T_FOREACH:
case T_FOR:
case T_WHILE:
case T_DO:
case T_BOOLEAN_AND:
case T_LOGICAL_AND:
case T_BOOLEAN_OR:
case T_LOGICAL_OR:
case T_SPACESHIP:
case T_CASE:
case T_DEFAULT:
case T_CATCH:
case T_CONTINUE:
$ccn++;
break;
case T_STRING:
if ('?' == $token->getValue()) {
$ccn = $ccn + 2;
}
break;
case T_COALESCE:
$ccn = $ccn + 2;
break;
}
}
$info->setCyclomaticComplexityNumber(max(1, $ccn));
return $info;
}
