SebastianBergmann\CodeCoverage\Node\File::calculateStatistics PHP Method

    protected function calculateStatistics()
    {
        $classStack = $functionStack = [];
        if ($this->cacheTokens) {
            $tokens = \PHP_Token_Stream_CachingFactory::get($this->getPath());
        } else {
            $tokens = new \PHP_Token_Stream($this->getPath());
        }
        $this->processClasses($tokens);
        $this->processTraits($tokens);
        $this->processFunctions($tokens);
        $this->linesOfCode = $tokens->getLinesOfCode();
        unset($tokens);
        for ($lineNumber = 1; $lineNumber <= $this->linesOfCode['loc']; $lineNumber++) {
            if (isset($this->startLines[$lineNumber])) {
                // Start line of a class.
                if (isset($this->startLines[$lineNumber]['className'])) {
                    if (isset($currentClass)) {
                        $classStack[] =& $currentClass;
                    }
                    $currentClass =& $this->startLines[$lineNumber];
                } elseif (isset($this->startLines[$lineNumber]['traitName'])) {
                    $currentTrait =& $this->startLines[$lineNumber];
                } elseif (isset($this->startLines[$lineNumber]['methodName'])) {
                    $currentMethod =& $this->startLines[$lineNumber];
                } elseif (isset($this->startLines[$lineNumber]['functionName'])) {
                    if (isset($currentFunction)) {
                        $functionStack[] =& $currentFunction;
                    }
                    $currentFunction =& $this->startLines[$lineNumber];
                }
            }
            if (isset($this->coverageData[$lineNumber])) {
                if (isset($currentClass)) {
                    $currentClass['executableLines']++;
                }
                if (isset($currentTrait)) {
                    $currentTrait['executableLines']++;
                }
                if (isset($currentMethod)) {
                    $currentMethod['executableLines']++;
                }
                if (isset($currentFunction)) {
                    $currentFunction['executableLines']++;
                }
                $this->numExecutableLines++;
                if (count($this->coverageData[$lineNumber]) > 0) {
                    if (isset($currentClass)) {
                        $currentClass['executedLines']++;
                    }
                    if (isset($currentTrait)) {
                        $currentTrait['executedLines']++;
                    }
                    if (isset($currentMethod)) {
                        $currentMethod['executedLines']++;
                    }
                    if (isset($currentFunction)) {
                        $currentFunction['executedLines']++;
                    }
                    $this->numExecutedLines++;
                }
            }
            if (isset($this->endLines[$lineNumber])) {
                // End line of a class.
                if (isset($this->endLines[$lineNumber]['className'])) {
                    unset($currentClass);
                    if ($classStack) {
                        end($classStack);
                        $key = key($classStack);
                        $currentClass =& $classStack[$key];
                        unset($classStack[$key]);
                    }
                } elseif (isset($this->endLines[$lineNumber]['traitName'])) {
                    unset($currentTrait);
                } elseif (isset($this->endLines[$lineNumber]['methodName'])) {
                    unset($currentMethod);
                } elseif (isset($this->endLines[$lineNumber]['functionName'])) {
                    unset($currentFunction);
                    if ($functionStack) {
                        end($functionStack);
                        $key = key($functionStack);
                        $currentFunction =& $functionStack[$key];
                        unset($functionStack[$key]);
                    }
                }
            }
        }
        foreach ($this->traits as &$trait) {
            foreach ($trait['methods'] as &$method) {
                if ($method['executableLines'] > 0) {
                    $method['coverage'] = $method['executedLines'] / $method['executableLines'] * 100;
                } else {
                    $method['coverage'] = 100;
                }
                $method['crap'] = $this->crap($method['ccn'], $method['coverage']);
                $trait['ccn'] += $method['ccn'];
            }
            if ($trait['executableLines'] > 0) {
                $trait['coverage'] = $trait['executedLines'] / $trait['executableLines'] * 100;
                if ($trait['coverage'] == 100) {
                    $this->numTestedClasses++;
                }
            } else {
                $trait['coverage'] = 100;
            }
            $trait['crap'] = $this->crap($trait['ccn'], $trait['coverage']);
        }
        foreach ($this->classes as &$class) {
            foreach ($class['methods'] as &$method) {
                if ($method['executableLines'] > 0) {
                    $method['coverage'] = $method['executedLines'] / $method['executableLines'] * 100;
                } else {
                    $method['coverage'] = 100;
                }
                $method['crap'] = $this->crap($method['ccn'], $method['coverage']);
                $class['ccn'] += $method['ccn'];
            }
            if ($class['executableLines'] > 0) {
                $class['coverage'] = $class['executedLines'] / $class['executableLines'] * 100;
                if ($class['coverage'] == 100) {
                    $this->numTestedClasses++;
                }
            } else {
                $class['coverage'] = 100;
            }
            $class['crap'] = $this->crap($class['ccn'], $class['coverage']);
        }
    }