/**
* Generates a mutant file from a mutation
* @param Mutation $mutation
*
* @return string
*/
public function generateFile(Mutation $mutation)
{
$id = $this->createId($mutation);
// uniqid()
$file = $this->tempDirectory . '/mutant.humbug.' . $id . '.php';
// generate mutated file
$mutatorClass = $mutation->getMutator();
$originalFileContent = file_get_contents($mutation->getFile());
$tokens = Tokenizer::getTokens($originalFileContent);
$mutatedFileContent = $mutatorClass::mutate($tokens, $mutation->getIndex());
file_put_contents($file, $mutatedFileContent);
return $file;
}
/**
* Based on the current file, generate mutations
*
* @return void
*/
public function generate()
{
$source = file_get_contents($this->getFilename());
$tokens = Tokenizer::getTokens($source);
$lineNumber = 1;
$methodName = '???';
$className = '???';
$namespace = '';
$inMethod = false;
$inMethodBlock = false;
$methodCurlyCount = 0;
$tokenCount = count($tokens);
foreach ($tokens as $index => $token) {
if (is_array($token) && $token[0] == Tokenizer::T_NEWLINE) {
$lineNumber = $token[2] + 1;
continue;
}
if (is_array($token) && $token[0] == T_NAMESPACE) {
for ($j = $index + 1; $j < $tokenCount; $j++) {
if ($tokens[$j][0] == T_STRING) {
$namespace .= '\\' . $tokens[$j][1];
} elseif ($tokens[$j] == '{' || $tokens[$j] == ';') {
break;
}
}
continue;
}
if (is_array($token) && ($token[0] == T_CLASS || $token[0] == T_INTERFACE) && $tokens[$index - 1][0] !== T_DOUBLE_COLON) {
$className = $namespace . '\\' . $tokens[$index + 2][1];
continue;
}
//TODO: handle whitespace!
if (is_array($token) && $token[0] == T_FUNCTION) {
if (!isset($tokens[$index + 2][1])) {
continue;
// ignore closure
}
$methodName = $tokens[$index + 2][1];
$inMethod = true;
continue;
}
/**
* Limit mutation generation to the interior of methods (for now!)
*/
if (true === $inMethod && false === $inMethodBlock && $methodCurlyCount == 0 && !($token == '{' || is_array($token) && $token[0] == T_CURLY_OPEN)) {
continue;
//skip over argument list
}
if ($inMethod) {
if ($token == '{' || is_array($token) && $token[0] == T_CURLY_OPEN) {
$methodCurlyCount += 1;
$inMethodBlock = true;
continue;
} elseif ($token == '}') {
$methodCurlyCount -= 1;
continue;
}
if ($methodCurlyCount == 0) {
$inMethodBlock = false;
$inMethod = false;
continue;
}
}
if (true === $inMethodBlock) {
foreach ($this->mutators as $mutator) {
if ($mutator::mutates($tokens, $index)) {
$this->mutations[] = new Mutation($this->getFilename(), $lineNumber, $className, $methodName, $index, $mutator);
}
}
}
}
return $this;
}