comparison vendor/phpunit/php-code-coverage/src/CodeCoverage.php @ 0:4c8ae668cc8c

Initial import (non-working)

+<?php
+/*
+ * This file is part of the PHP_CodeCoverage package.
+ *
+ * (c) Sebastian Bergmann <[e-mail]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+use SebastianBergmann\Environment\Runtime;
+
+/**
+ * Provides collection functionality for PHP code coverage information.
+ *
+ * @since Class available since Release 1.0.0
+ */
+class PHP_CodeCoverage
+{
+    /**
+     * @var PHP_CodeCoverage_Driver
+     */
+    private $driver;
+
+    /**
+     * @var PHP_CodeCoverage_Filter
+     */
+    private $filter;
+
+    /**
+     * @var bool
+     */
+    private $cacheTokens = false;
+
+    /**
+     * @var bool
+     */
+    private $checkForUnintentionallyCoveredCode = false;
+
+    /**
+     * @var bool
+     */
+    private $forceCoversAnnotation = false;
+
+    /**
+     * @var bool
+     */
+    private $mapTestClassNameToCoveredClassName = false;
+
+    /**
+     * @var bool
+     */
+    private $addUncoveredFilesFromWhitelist = true;
+
+    /**
+     * @var bool
+     */
+    private $processUncoveredFilesFromWhitelist = false;
+
+    /**
+     * @var mixed
+     */
+    private $currentId;
+
+    /**
+     * Code coverage data.
+     *
+     * @var array
+     */
+    private $data = array();
+
+    /**
+     * @var array
+     */
+    private $ignoredLines = array();
+
+    /**
+     * @var bool
+     */
+    private $disableIgnoredLines = false;
+
+    /**
+     * Test data.
+     *
+     * @var array
+     */
+    private $tests = array();
+
+    /**
+     * Constructor.
+     *
+     * @param  PHP_CodeCoverage_Driver    $driver
+     * @param  PHP_CodeCoverage_Filter    $filter
+     * @throws PHP_CodeCoverage_Exception
+     */
+    public function __construct(PHP_CodeCoverage_Driver $driver = null, PHP_CodeCoverage_Filter $filter = null)
+    {
+        if ($driver === null) {
+            $driver = $this->selectDriver();
+        }
+
+        if ($filter === null) {
+            $filter = new PHP_CodeCoverage_Filter;
+        }
+
+        $this->driver = $driver;
+        $this->filter = $filter;
+    }
+
+    /**
+     * Returns the PHP_CodeCoverage_Report_Node_* object graph
+     * for this PHP_CodeCoverage object.
+     *
+     * @return PHP_CodeCoverage_Report_Node_Directory
+     * @since  Method available since Release 1.1.0
+     */
+    public function getReport()
+    {
+        $factory = new PHP_CodeCoverage_Report_Factory;
+
+        return $factory->create($this);
+    }
+
+    /**
+     * Clears collected code coverage data.
+     */
+    public function clear()
+    {
+        $this->currentId = null;
+        $this->data      = array();
+        $this->tests     = array();
+    }
+
+    /**
+     * Returns the PHP_CodeCoverage_Filter used.
+     *
+     * @return PHP_CodeCoverage_Filter
+     */
+    public function filter()
+    {
+        return $this->filter;
+    }
+
+    /**
+     * Returns the collected code coverage data.
+     * Set $raw = true to bypass all filters.
+     *
+     * @param  bool  $raw
+     * @return array
+     * @since  Method available since Release 1.1.0
+     */
+    public function getData($raw = false)
+    {
+        if (!$raw && $this->addUncoveredFilesFromWhitelist) {
+            $this->addUncoveredFilesFromWhitelist();
+        }
+
+        // We need to apply the blacklist filter a second time
+        // when no whitelist is used.
+        if (!$raw && !$this->filter->hasWhitelist()) {
+            $this->applyListsFilter($this->data);
+        }
+
+        return $this->data;
+    }
+
+    /**
+     * Sets the coverage data.
+     *
+     * @param array $data
+     * @since Method available since Release 2.0.0
+     */
+    public function setData(array $data)
+    {
+        $this->data = $data;
+    }
+
+    /**
+     * Returns the test data.
+     *
+     * @return array
+     * @since  Method available since Release 1.1.0
+     */
+    public function getTests()
+    {
+        return $this->tests;
+    }
+
+    /**
+     * Sets the test data.
+     *
+     * @param array $tests
+     * @since Method available since Release 2.0.0
+     */
+    public function setTests(array $tests)
+    {
+        $this->tests = $tests;
+    }
+
+    /**
+     * Start collection of code coverage information.
+     *
+     * @param  mixed                      $id
+     * @param  bool                       $clear
+     * @throws PHP_CodeCoverage_Exception
+     */
+    public function start($id, $clear = false)
+    {
+        if (!is_bool($clear)) {
+            throw PHP_CodeCoverage_Util_InvalidArgumentHelper::factory(
+                1,
+                'boolean'
+            );
+        }
+
+        if ($clear) {
+            $this->clear();
+        }
+
+        $this->currentId = $id;
+
+        $this->driver->start();
+    }
+
+    /**
+     * Stop collection of code coverage information.
+     *
+     * @param  bool                       $append
+     * @param  mixed                      $linesToBeCovered
+     * @param  array                      $linesToBeUsed
+     * @return array
+     * @throws PHP_CodeCoverage_Exception
+     */
+    public function stop($append = true, $linesToBeCovered = array(), array $linesToBeUsed = array())
+    {
+        if (!is_bool($append)) {
+            throw PHP_CodeCoverage_Util_InvalidArgumentHelper::factory(
+                1,
+                'boolean'
+            );
+        }
+
+        if (!is_array($linesToBeCovered) && $linesToBeCovered !== false) {
+            throw PHP_CodeCoverage_Util_InvalidArgumentHelper::factory(
+                2,
+                'array or false'
+            );
+        }
+
+        $data = $this->driver->stop();
+        $this->append($data, null, $append, $linesToBeCovered, $linesToBeUsed);
+
+        $this->currentId = null;
+
+        return $data;
+    }
+
+    /**
+     * Appends code coverage data.
+     *
+     * @param  array                      $data
+     * @param  mixed                      $id
+     * @param  bool                       $append
+     * @param  mixed                      $linesToBeCovered
+     * @param  array                      $linesToBeUsed
+     * @throws PHP_CodeCoverage_Exception
+     */
+    public function append(array $data, $id = null, $append = true, $linesToBeCovered = array(), array $linesToBeUsed = array())
+    {
+        if ($id === null) {
+            $id = $this->currentId;
+        }
+
+        if ($id === null) {
+            throw new PHP_CodeCoverage_Exception;
+        }
+
+        $this->applyListsFilter($data);
+        $this->applyIgnoredLinesFilter($data);
+        $this->initializeFilesThatAreSeenTheFirstTime($data);
+
+        if (!$append) {
+            return;
+        }
+
+        if ($id != 'UNCOVERED_FILES_FROM_WHITELIST') {
+            $this->applyCoversAnnotationFilter(
+                $data,
+                $linesToBeCovered,
+                $linesToBeUsed
+            );
+        }
+
+        if (empty($data)) {
+            return;
+        }
+
+        $size   = 'unknown';
+        $status = null;
+
+        if ($id instanceof PHPUnit_Framework_TestCase) {
+            $_size = $id->getSize();
+
+            if ($_size == PHPUnit_Util_Test::SMALL) {
+                $size = 'small';
+            } elseif ($_size == PHPUnit_Util_Test::MEDIUM) {
+                $size = 'medium';
+            } elseif ($_size == PHPUnit_Util_Test::LARGE) {
+                $size = 'large';
+            }
+
+            $status = $id->getStatus();
+            $id     = get_class($id) . '::' . $id->getName();
+        } elseif ($id instanceof PHPUnit_Extensions_PhptTestCase) {
+            $size = 'large';
+            $id   = $id->getName();
+        }
+
+        $this->tests[$id] = array('size' => $size, 'status' => $status);
+
+        foreach ($data as $file => $lines) {
+            if (!$this->filter->isFile($file)) {
+                continue;
+            }
+
+            foreach ($lines as $k => $v) {
+                if ($v == PHP_CodeCoverage_Driver::LINE_EXECUTED) {
+                    if (empty($this->data[$file][$k]) || !in_array($id, $this->data[$file][$k])) {
+                        $this->data[$file][$k][] = $id;
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * Merges the data from another instance of PHP_CodeCoverage.
+     *
+     * @param PHP_CodeCoverage $that
+     */
+    public function merge(PHP_CodeCoverage $that)
+    {
+        $this->filter->setBlacklistedFiles(
+            array_merge($this->filter->getBlacklistedFiles(), $that->filter()->getBlacklistedFiles())
+        );
+
+        $this->filter->setWhitelistedFiles(
+            array_merge($this->filter->getWhitelistedFiles(), $that->filter()->getWhitelistedFiles())
+        );
+
+        foreach ($that->data as $file => $lines) {
+            if (!isset($this->data[$file])) {
+                if (!$this->filter->isFiltered($file)) {
+                    $this->data[$file] = $lines;
+                }
+
+                continue;
+            }
+
+            foreach ($lines as $line => $data) {
+                if ($data !== null) {
+                    if (!isset($this->data[$file][$line])) {
+                        $this->data[$file][$line] = $data;
+                    } else {
+                        $this->data[$file][$line] = array_unique(
+                            array_merge($this->data[$file][$line], $data)
+                        );
+                    }
+                }
+            }
+        }
+
+        $this->tests = array_merge($this->tests, $that->getTests());
+
+    }
+
+    /**
+     * @param  bool                       $flag
+     * @throws PHP_CodeCoverage_Exception
+     * @since  Method available since Release 1.1.0
+     */
+    public function setCacheTokens($flag)
+    {
+        if (!is_bool($flag)) {
+            throw PHP_CodeCoverage_Util_InvalidArgumentHelper::factory(
+                1,
+                'boolean'
+            );
+        }
+
+        $this->cacheTokens = $flag;
+    }
+
+    /**
+     * @since Method available since Release 1.1.0
+     */
+    public function getCacheTokens()
+    {
+        return $this->cacheTokens;
+    }
+
+    /**
+     * @param  bool                       $flag
+     * @throws PHP_CodeCoverage_Exception
+     * @since  Method available since Release 2.0.0
+     */
+    public function setCheckForUnintentionallyCoveredCode($flag)
+    {
+        if (!is_bool($flag)) {
+            throw PHP_CodeCoverage_Util_InvalidArgumentHelper::factory(
+                1,
+                'boolean'
+            );
+        }
+
+        $this->checkForUnintentionallyCoveredCode = $flag;
+    }
+
+    /**
+     * @param  bool                       $flag
+     * @throws PHP_CodeCoverage_Exception
+     */
+    public function setForceCoversAnnotation($flag)
+    {
+        if (!is_bool($flag)) {
+            throw PHP_CodeCoverage_Util_InvalidArgumentHelper::factory(
+                1,
+                'boolean'
+            );
+        }
+
+        $this->forceCoversAnnotation = $flag;
+    }
+
+    /**
+     * @param  bool                       $flag
+     * @throws PHP_CodeCoverage_Exception
+     */
+    public function setMapTestClassNameToCoveredClassName($flag)
+    {
+        if (!is_bool($flag)) {
+            throw PHP_CodeCoverage_Util_InvalidArgumentHelper::factory(
+                1,
+                'boolean'
+            );
+        }
+
+        $this->mapTestClassNameToCoveredClassName = $flag;
+    }
+
+    /**
+     * @param  bool                       $flag
+     * @throws PHP_CodeCoverage_Exception
+     */
+    public function setAddUncoveredFilesFromWhitelist($flag)
+    {
+        if (!is_bool($flag)) {
+            throw PHP_CodeCoverage_Util_InvalidArgumentHelper::factory(
+                1,
+                'boolean'
+            );
+        }
+
+        $this->addUncoveredFilesFromWhitelist = $flag;
+    }
+
+    /**
+     * @param  bool                       $flag
+     * @throws PHP_CodeCoverage_Exception
+     */
+    public function setProcessUncoveredFilesFromWhitelist($flag)
+    {
+        if (!is_bool($flag)) {
+            throw PHP_CodeCoverage_Util_InvalidArgumentHelper::factory(
+                1,
+                'boolean'
+            );
+        }
+
+        $this->processUncoveredFilesFromWhitelist = $flag;
+    }
+
+    /**
+     * @param  bool                       $flag
+     * @throws PHP_CodeCoverage_Exception
+     */
+    public function setDisableIgnoredLines($flag)
+    {
+        if (!is_bool($flag)) {
+            throw PHP_CodeCoverage_Util_InvalidArgumentHelper::factory(
+                1,
+                'boolean'
+            );
+        }
+
+        $this->disableIgnoredLines = $flag;
+    }
+
+    /**
+     * Applies the @covers annotation filtering.
+     *
+     * @param  array                                                 $data
+     * @param  mixed                                                 $linesToBeCovered
+     * @param  array                                                 $linesToBeUsed
+     * @throws PHP_CodeCoverage_Exception_UnintentionallyCoveredCode
+     */
+    private function applyCoversAnnotationFilter(array &$data, $linesToBeCovered, array $linesToBeUsed)
+    {
+        if ($linesToBeCovered === false ||
+            ($this->forceCoversAnnotation && empty($linesToBeCovered))) {
+            $data = array();
+
+            return;
+        }
+
+        if (empty($linesToBeCovered)) {
+            return;
+        }
+
+        if ($this->checkForUnintentionallyCoveredCode) {
+            $this->performUnintentionallyCoveredCodeCheck(
+                $data,
+                $linesToBeCovered,
+                $linesToBeUsed
+            );
+        }
+
+        $data = array_intersect_key($data, $linesToBeCovered);
+
+        foreach (array_keys($data) as $filename) {
+            $_linesToBeCovered = array_flip($linesToBeCovered[$filename]);
+
+            $data[$filename] = array_intersect_key(
+                $data[$filename],
+                $_linesToBeCovered
+            );
+        }
+    }
+
+    /**
+     * Applies the blacklist/whitelist filtering.
+     *
+     * @param array $data
+     */
+    private function applyListsFilter(array &$data)
+    {
+        foreach (array_keys($data) as $filename) {
+            if ($this->filter->isFiltered($filename)) {
+                unset($data[$filename]);
+            }
+        }
+    }
+
+    /**
+     * Applies the "ignored lines" filtering.
+     *
+     * @param array $data
+     */
+    private function applyIgnoredLinesFilter(array &$data)
+    {
+        foreach (array_keys($data) as $filename) {
+            if (!$this->filter->isFile($filename)) {
+                continue;
+            }
+
+            foreach ($this->getLinesToBeIgnored($filename) as $line) {
+                unset($data[$filename][$line]);
+            }
+        }
+    }
+
+    /**
+     * @param array $data
+     * @since Method available since Release 1.1.0
+     */
+    private function initializeFilesThatAreSeenTheFirstTime(array $data)
+    {
+        foreach ($data as $file => $lines) {
+            if ($this->filter->isFile($file) && !isset($this->data[$file])) {
+                $this->data[$file] = array();
+
+                foreach ($lines as $k => $v) {
+                    $this->data[$file][$k] = $v == -2 ? null : array();
+                }
+            }
+        }
+    }
+
+    /**
+     * Processes whitelisted files that are not covered.
+     */
+    private function addUncoveredFilesFromWhitelist()
+    {
+        $data           = array();
+        $uncoveredFiles = array_diff(
+            $this->filter->getWhitelist(),
+            array_keys($this->data)
+        );
+
+        foreach ($uncoveredFiles as $uncoveredFile) {
+            if (!file_exists($uncoveredFile)) {
+                continue;
+            }
+
+            if ($this->processUncoveredFilesFromWhitelist) {
+                $this->processUncoveredFileFromWhitelist(
+                    $uncoveredFile,
+                    $data,
+                    $uncoveredFiles
+                );
+            } else {
+                $data[$uncoveredFile] = array();
+
+                $lines = count(file($uncoveredFile));
+
+                for ($i = 1; $i <= $lines; $i++) {
+                    $data[$uncoveredFile][$i] = PHP_CodeCoverage_Driver::LINE_NOT_EXECUTED;
+                }
+            }
+        }
+
+        $this->append($data, 'UNCOVERED_FILES_FROM_WHITELIST');
+    }
+
+    /**
+     * @param string $uncoveredFile
+     * @param array  $data
+     * @param array  $uncoveredFiles
+     */
+    private function processUncoveredFileFromWhitelist($uncoveredFile, array &$data, array $uncoveredFiles)
+    {
+        $this->driver->start();
+        include_once $uncoveredFile;
+        $coverage = $this->driver->stop();
+
+        foreach ($coverage as $file => $fileCoverage) {
+            if (!isset($data[$file]) &&
+                in_array($file, $uncoveredFiles)) {
+                foreach (array_keys($fileCoverage) as $key) {
+                    if ($fileCoverage[$key] == PHP_CodeCoverage_Driver::LINE_EXECUTED) {
+                        $fileCoverage[$key] = PHP_CodeCoverage_Driver::LINE_NOT_EXECUTED;
+                    }
+                }
+
+                $data[$file] = $fileCoverage;
+            }
+        }
+    }
+
+    /**
+     * Returns the lines of a source file that should be ignored.
+     *
+     * @param  string                     $filename
+     * @return array
+     * @throws PHP_CodeCoverage_Exception
+     * @since  Method available since Release 2.0.0
+     */
+    private function getLinesToBeIgnored($filename)
+    {
+        if (!is_string($filename)) {
+            throw PHP_CodeCoverage_Util_InvalidArgumentHelper::factory(
+                1,
+                'string'
+            );
+        }
+
+        if (!isset($this->ignoredLines[$filename])) {
+            $this->ignoredLines[$filename] = array();
+
+            if ($this->disableIgnoredLines) {
+                return $this->ignoredLines[$filename];
+            }
+
+            $ignore   = false;
+            $stop     = false;
+            $lines    = file($filename);
+            $numLines = count($lines);
+
+            foreach ($lines as $index => $line) {
+                if (!trim($line)) {
+                    $this->ignoredLines[$filename][] = $index + 1;
+                }
+            }
+
+            if ($this->cacheTokens) {
+                $tokens = PHP_Token_Stream_CachingFactory::get($filename);
+            } else {
+                $tokens = new PHP_Token_Stream($filename);
+            }
+
+            $classes = array_merge($tokens->getClasses(), $tokens->getTraits());
+            $tokens  = $tokens->tokens();
+
+            foreach ($tokens as $token) {
+                switch (get_class($token)) {
+                    case 'PHP_Token_COMMENT':
+                    case 'PHP_Token_DOC_COMMENT':
+                        $_token = trim($token);
+                        $_line  = trim($lines[$token->getLine() - 1]);
+
+                        if ($_token == '// @codeCoverageIgnore' ||
+                            $_token == '//@codeCoverageIgnore') {
+                            $ignore = true;
+                            $stop   = true;
+                        } elseif ($_token == '// @codeCoverageIgnoreStart' ||
+                            $_token == '//@codeCoverageIgnoreStart') {
+                            $ignore = true;
+                        } elseif ($_token == '// @codeCoverageIgnoreEnd' ||
+                            $_token == '//@codeCoverageIgnoreEnd') {
+                            $stop = true;
+                        }
+
+                        if (!$ignore) {
+                            $start = $token->getLine();
+                            $end   = $start + substr_count($token, "\n");
+
+                            // Do not ignore the first line when there is a token
+                            // before the comment
+                            if (0 !== strpos($_token, $_line)) {
+                                $start++;
+                            }
+
+                            for ($i = $start; $i < $end; $i++) {
+                                $this->ignoredLines[$filename][] = $i;
+                            }
+
+                            // A DOC_COMMENT token or a COMMENT token starting with "/*"
+                            // does not contain the final \n character in its text
+                            if (isset($lines[$i-1]) && 0 === strpos($_token, '/*') && '*/' === substr(trim($lines[$i-1]), -2)) {
+                                $this->ignoredLines[$filename][] = $i;
+                            }
+                        }
+                        break;
+
+                    case 'PHP_Token_INTERFACE':
+                    case 'PHP_Token_TRAIT':
+                    case 'PHP_Token_CLASS':
+                    case 'PHP_Token_FUNCTION':
+                        $docblock = $token->getDocblock();
+
+                        $this->ignoredLines[$filename][] = $token->getLine();
+
+                        if (strpos($docblock, '@codeCoverageIgnore') || strpos($docblock, '@deprecated')) {
+                            $endLine = $token->getEndLine();
+
+                            for ($i = $token->getLine(); $i <= $endLine; $i++) {
+                                $this->ignoredLines[$filename][] = $i;
+                            }
+                        } elseif ($token instanceof PHP_Token_INTERFACE ||
+                            $token instanceof PHP_Token_TRAIT ||
+                            $token instanceof PHP_Token_CLASS) {
+                            if (empty($classes[$token->getName()]['methods'])) {
+                                for ($i = $token->getLine();
+                                     $i <= $token->getEndLine();
+                                     $i++) {
+                                    $this->ignoredLines[$filename][] = $i;
+                                }
+                            } else {
+                                $firstMethod = array_shift(
+                                    $classes[$token->getName()]['methods']
+                                );
+
+                                do {
+                                    $lastMethod = array_pop(
+                                        $classes[$token->getName()]['methods']
+                                    );
+                                } while ($lastMethod !== null &&
+                                    substr($lastMethod['signature'], 0, 18) == 'anonymous function');
+
+                                if ($lastMethod === null) {
+                                    $lastMethod = $firstMethod;
+                                }
+
+                                for ($i = $token->getLine();
+                                     $i < $firstMethod['startLine'];
+                                     $i++) {
+                                    $this->ignoredLines[$filename][] = $i;
+                                }
+
+                                for ($i = $token->getEndLine();
+                                     $i > $lastMethod['endLine'];
+                                     $i--) {
+                                    $this->ignoredLines[$filename][] = $i;
+                                }
+                            }
+                        }
+                        break;
+
+                    case 'PHP_Token_NAMESPACE':
+                        $this->ignoredLines[$filename][] = $token->getEndLine();
+
+                    // Intentional fallthrough
+                    case 'PHP_Token_OPEN_TAG':
+                    case 'PHP_Token_CLOSE_TAG':
+                    case 'PHP_Token_USE':
+                        $this->ignoredLines[$filename][] = $token->getLine();
+                        break;
+                }
+
+                if ($ignore) {
+                    $this->ignoredLines[$filename][] = $token->getLine();
+
+                    if ($stop) {
+                        $ignore = false;
+                        $stop   = false;
+                    }
+                }
+            }
+
+            $this->ignoredLines[$filename][] = $numLines + 1;
+
+            $this->ignoredLines[$filename] = array_unique(
+                $this->ignoredLines[$filename]
+            );
+
+            sort($this->ignoredLines[$filename]);
+        }
+
+        return $this->ignoredLines[$filename];
+    }
+
+    /**
+     * @param  array                                                 $data
+     * @param  array                                                 $linesToBeCovered
+     * @param  array                                                 $linesToBeUsed
+     * @throws PHP_CodeCoverage_Exception_UnintentionallyCoveredCode
+     * @since Method available since Release 2.0.0
+     */
+    private function performUnintentionallyCoveredCodeCheck(array &$data, array $linesToBeCovered, array $linesToBeUsed)
+    {
+        $allowedLines = $this->getAllowedLines(
+            $linesToBeCovered,
+            $linesToBeUsed
+        );
+
+        $message = '';
+
+        foreach ($data as $file => $_data) {
+            foreach ($_data as $line => $flag) {
+                if ($flag == 1 &&
+                    (!isset($allowedLines[$file]) ||
+                        !isset($allowedLines[$file][$line]))) {
+                    $message .= sprintf(
+                        '- %s:%d' . PHP_EOL,
+                        $file,
+                        $line
+                    );
+                }
+            }
+        }
+
+        if (!empty($message)) {
+            throw new PHP_CodeCoverage_Exception_UnintentionallyCoveredCode(
+                $message
+            );
+        }
+    }
+
+    /**
+     * @param  array $linesToBeCovered
+     * @param  array $linesToBeUsed
+     * @return array
+     * @since Method available since Release 2.0.0
+     */
+    private function getAllowedLines(array $linesToBeCovered, array $linesToBeUsed)
+    {
+        $allowedLines = array();
+
+        foreach (array_keys($linesToBeCovered) as $file) {
+            if (!isset($allowedLines[$file])) {
+                $allowedLines[$file] = array();
+            }
+
+            $allowedLines[$file] = array_merge(
+                $allowedLines[$file],
+                $linesToBeCovered[$file]
+            );
+        }
+
+        foreach (array_keys($linesToBeUsed) as $file) {
+            if (!isset($allowedLines[$file])) {
+                $allowedLines[$file] = array();
+            }
+
+            $allowedLines[$file] = array_merge(
+                $allowedLines[$file],
+                $linesToBeUsed[$file]
+            );
+        }
+
+        foreach (array_keys($allowedLines) as $file) {
+            $allowedLines[$file] = array_flip(
+                array_unique($allowedLines[$file])
+            );
+        }
+
+        return $allowedLines;
+    }
+
+    /**
+     * @return PHP_CodeCoverage_Driver
+     * @throws PHP_CodeCoverage_Exception
+     */
+    private function selectDriver()
+    {
+        $runtime = new Runtime;
+
+        if (!$runtime->canCollectCodeCoverage()) {
+            throw new PHP_CodeCoverage_Exception('No code coverage driver available');
+        }
+
+        if ($runtime->isHHVM()) {
+            return new PHP_CodeCoverage_Driver_HHVM;
+        } elseif ($runtime->isPHPDBG()) {
+            return new PHP_CodeCoverage_Driver_PHPDBG;
+        } else {
+            return new PHP_CodeCoverage_Driver_Xdebug;
+        }
+    }
+}