/**
* @param mixed $context
*
* @return mixed
* @throws \Exception
*/
public function decide($context = null)
{
if (null === $context) {
$context = [];
}
$visitor = new ClosureExpressionVisitor();
foreach ($this->rules as $rule) {
$expression = $rule->getExpression();
if ($expression instanceof Expression) {
if (null === $this->el) {
$this->el = new ExpressionLanguage();
}
$response = $this->el->evaluate($expression, $context);
} else {
$filter = $visitor->dispatch($expression);
$response = $filter($context);
}
if ($response) {
$return = $rule->getReturn();
if (is_callable($return)) {
return call_user_func($return, $context);
}
return $return;
}
}
throw new InvalidRuleException('No rules matched');
}
/**
* @param string $expression
* @param mixed $data
* @return mixed
*/
public function evaluate($expression, $data)
{
if (!is_string($expression)) {
return $expression;
}
$key = $expression;
if (!array_key_exists($key, $this->cache)) {
if (!preg_match(self::EXPRESSION_REGEX, $expression, $matches)) {
$this->cache[$key] = false;
} else {
$expression = $matches['expression'];
$context = $this->context;
$context['object'] = $data;
$this->cache[$key] = $this->expressionLanguage->parse($expression, array_keys($context));
}
}
if (false !== $this->cache[$key]) {
if (!isset($context)) {
$context = $this->context;
$context['object'] = $data;
}
return $this->expressionLanguage->evaluate($this->cache[$key], $context);
}
return $expression;
}
/**
* @see MetaborStd\Statemachine.ConditionInterface::checkCondition()
*/
public function checkCondition($subject, \ArrayAccess $context)
{
$values = $this->values;
$values['subject'] = $subject;
$values['context'] = $context;
return (bool) $this->expressionLanguage->evaluate($this->getExpression(), $values);
}
/**
* {@inheritdoc}
*/
public function provide($entity, $name)
{
try {
return $this->expressionLanguage->evaluate($name, ['object' => $entity, 'translator' => $this->translator]);
} catch (\Exception $e) {
throw new CannotEvaluateTokenException($name, $entity, $e);
}
}
/**
* @param Rule $rule
* @param WorkingMemory $workingMemory
*
* @return bool
*/
public function checkCondition(Rule $rule, WorkingMemory $workingMemory)
{
try {
return (bool) $this->expressionLanguage->evaluate($rule->getCondition(), $workingMemory->getAllFacts());
} catch (SyntaxError $e) {
return false;
}
}
public function handle($arg)
{
$expressionDetected = preg_match('/expr\\((.+)\\)/', $arg, $matches);
if (1 !== $expressionDetected) {
throw new NotResolvableValueException($arg);
}
return $this->expressionLanguage->evaluate($matches[1], $this->expressionContext->getData());
}
/**
* @param string $expression
* @param Request $request
*
* @return string
*/
private function parseRequestValueExpression($expression, Request $request)
{
$expression = preg_replace_callback('/(\\$\\w+)/', function ($matches) use($request) {
$variable = $request->get(substr($matches[1], 1));
return is_string($variable) ? sprintf('"%s"', $variable) : $variable;
}, $expression);
return $this->expression->evaluate($expression, ['container' => $this->container]);
}
/**
* {@inheritdoc}
*/
public function evaluate(RuleInterface $rule, RuleSubjectInterface $subject)
{
try {
return (bool) $this->expression->evaluate($rule->getExpression(), [$subject->getSubjectType() => $subject]);
} catch (\Exception $e) {
$this->logger->error(sprintf('%s Trace: %s', $e->getMessage(), $e->getTraceAsString()));
}
return false;
}
/**
* @param InterceptionInterface $interception
* @param CacheAnnotationInterface $annotation
*
* @return string
* @throws \Phpro\AnnotatedCache\Exception\UnsupportedKeyParameterException
*/
public function generateKey(InterceptionInterface $interception, CacheAnnotationInterface $annotation) : string
{
$format = property_exists($annotation, 'key') ? $annotation->key : '';
$parameters = array_merge($interception->getParams(), ['interception' => $interception]);
if ($format && ($result = $this->language->evaluate($format, $parameters))) {
return sha1(serialize($result));
}
return $this->keyGenerator->generateKey($interception, $annotation);
}
/**
* @return string
*/
public function __invoke()
{
if (empty($this->keys)) {
$values = array();
} else {
$args = func_get_args();
$values = array_combine($this->keys, $args);
}
return $this->expressionLanguage->evaluate($this->getExpression(), $values);
}
/**
* @param string $expression
* @param mixed $data
* @return mixed
*/
public function evaluate($expression, $data)
{
if (!preg_match(self::EXPRESSION_REGEX, $expression, $matches)) {
return $expression;
}
$expression = $matches['expression'];
$context = array_merge($this->context, array('object' => $data));
$parsedExpression = $this->expressionLanguage->parse($expression, array_keys($context));
return $this->expressionLanguage->evaluate($parsedExpression, $context);
}
/**
* Evaluate value
*
* @param string $value
* @param array $attributes
*
* @return mixed
*/
private function evaluateValue($value, array $attributes)
{
if ($value[0] == '@') {
if (!$this->expressionLanguage) {
throw new \LogicException('Can not evaluate expression language. Please inject ExpressionLanguage to ORMParameterConverter.');
}
$value = substr($value, 1);
$value = $this->expressionLanguage->evaluate($value, $attributes);
}
return $value;
}
/**
* Checks the limits against the actual recorded values and determines whether they have exceeded
*
* @return void
*/
public function checkResults()
{
$data = $this->params->all();
foreach ($data as $key => $value) {
$failed = $this->expression->evaluate($value['expression'], array('value' => $value['value'], 'limit' => $value['limit']));
if ($failed) {
// We throw the exception because the limit has been breached.
throw new Exceptions\LimitExceededException($value['value'], $value['limit'], $key);
}
}
}
/**
* @inheritdoc
*/
public function resolve($func)
{
if (!is_array($func)) {
return null;
}
$key = key($func);
$expression = array_shift($func);
return function ($item) use($key, $expression, $func) {
return $this->expressionLanguage->evaluate($expression, array_merge($func, [$key => $item]));
};
}
/**
* @param array $input
*/
public function filterPrice(array $input = [])
{
if (empty($input) || $this->collection->isEmpty()) {
return null;
}
foreach ($input as $nested) {
list($operand, $value) = array_values($this->getOperandAndValue($nested));
$this->collection = $this->collection->filter(function (array $entry) use($operand, $value) {
return $this->expression->evaluate("entry['price'] {$operand} value", compact('entry', 'value'));
});
}
}
/**
* @param Condition $condition
* @param mixed $subject
* @return bool
*/
public function evaluate(Condition $condition, $subject)
{
try {
/** @var ExpressionLanguageCondition $condition */
return (bool) $this->expressionLanguage->evaluate($condition->expression(), ['subject' => $subject]);
} catch (SyntaxError $syntaxError) {
if ($this->evaluateSyntaxErrorsToFalse) {
return false;
}
throw $syntaxError;
}
}
function it_should_parse_expression_with_parameters(ContainerInterface $container, ExpressionLanguage $expression, Request $request)
{
$request->get('foo')->willReturn('bar');
$request->get('baz')->willReturn(1);
$expression->evaluate('service("demo_service")', ['container' => $container])->willReturn('demo_object');
$this->parseRequestValues(['factory' => ['method' => 'createByParameter', 'arguments' => ['expr:service("demo_service")']]], $request)->shouldReturn(['factory' => ['method' => 'createByParameter', 'arguments' => ['demo_object']]]);
$expression->evaluate('service("demo_service")->getWith("bar")', ['container' => $container])->willReturn('demo_object->getWith("bar")');
$this->parseRequestValues(['factory' => ['method' => 'createByParameter', 'arguments' => ['expr:service("demo_service")->getWith($foo)']]], $request)->shouldReturn(['factory' => ['method' => 'createByParameter', 'arguments' => ['demo_object->getWith("bar")']]]);
$expression->evaluate('service("demo_service")->getWith("bar", 1)', ['container' => $container])->willReturn('demo_object->getWith("bar", 1)');
$this->parseRequestValues(['factory' => ['method' => 'createByParameter', 'arguments' => ['expr:service("demo_service")->getWith($foo, $baz)']]], $request)->shouldReturn(['factory' => ['method' => 'createByParameter', 'arguments' => ['demo_object->getWith("bar", 1)']]]);
$expression->evaluate('service("demo_service")->getWith("bar")->andGet(1)', ['container' => $container])->willReturn('demo_object->getWith("bar")->andGet(1)');
$this->parseRequestValues(['factory' => ['method' => 'createByParameter', 'arguments' => ['expr:service("demo_service")->getWith($foo)->andGet($baz)']]], $request)->shouldReturn(['factory' => ['method' => 'createByParameter', 'arguments' => ['demo_object->getWith("bar")->andGet(1)']]]);
}
/**
* {@inheritdoc}
*/
public function validate($value)
{
$errors = array();
$this->addVariable('value', $value);
// Sometime ExpressionValueValidator is constructed without the
// ExpressionLanguage object, so it can be cached. ExpressionLanguage
// can't be cached because of closures.
$this->expressionLanguage = $this->expressionLanguage ?: new ExpressionLanguage();
if (!$this->expressionLanguage->evaluate($this->expression, $this->variables)) {
$errors[] = new Error($this->options['message']);
}
return $errors;
}
/**
* @param FeatureExpressionInterface $feature
* @param array $context
*
* @throws \RuntimeException if expression could not be validated
*
* @return bool|string
*/
private function validate(FeatureExpressionInterface $feature, array $context = [])
{
$expression = $feature->getExpression();
if ('' !== $expression && $this->expressionLanguage instanceof ExpressionLanguage) {
try {
return (bool) $this->expressionLanguage->evaluate($expression, $context);
} catch (\Exception $e) {
throw new \RuntimeException("Could not evaluate expression " . $expression, 0, $e);
}
}
return true;
// no expression to validate
}
/**
* Returns the objects filtered by the given path value.
*
* @param array $objects
* @param string $expression
*
* @return array
*/
public function filter(array $objects, $expression)
{
$filteredObjects = array();
foreach ($objects as $key => $object) {
try {
if (@$this->language->evaluate('object.' . $expression, array('object' => $object))) {
$filteredObjects[] = $object;
}
} catch (\Exception $exception) {
// Property does not exist: ignore this item
}
}
return $filteredObjects;
}
public function count($arrayOrObject, $expression = null)
{
$count = 0;
foreach ($arrayOrObject as $value) {
$shouldSum = true;
if (null !== $expression) {
$shouldSum = $this->language->evaluate($expression, array('value' => $value));
}
if ($shouldSum) {
$count++;
}
}
return $count;
}
public function evaluate($data, $expression = null)
{
if ($this->id === null) {
throw new \InvalidArgumentException('Policy not loaded!');
}
$expression = $expression === null ? $this->expression : $expression;
if (!is_array($data)) {
$data = array($data);
}
$context = array();
foreach ($data as $index => $item) {
if (is_numeric($index)) {
// Resolve it to a class name
$ns = explode('\\', get_class($item));
$index = str_replace('Model', '', array_pop($ns));
}
$context[strtolower($index)] = $item;
}
$language = new ExpressionLanguage();
try {
return $language->evaluate($expression, $context);
} catch (\Exception $e) {
throw new Exception\InvalidExpressionException($e->getMessage());
}
}
public function testConstantFunction()
{
$expressionLanguage = new ExpressionLanguage();
$this->assertEquals(PHP_VERSION, $expressionLanguage->evaluate('constant("PHP_VERSION")'));
$expressionLanguage = new ExpressionLanguage();
$this->assertEquals('constant("PHP_VERSION")', $expressionLanguage->compile('constant("PHP_VERSION")'));
}
protected function execute(InputInterface $input, OutputInterface $output)
{
$api = $this->getApplication()->getApi();
$analysis = $api->getProject($input->getArgument('project-uuid'))->getLastAnalysis();
if (!$analysis) {
$output->writeln('<error>There are no analyses</error>');
return 1;
}
$helper = new DescriptorHelper($api->getSerializer());
$helper->describe($output, $analysis, $input->getOption('format'));
if ('txt' === $input->getOption('format') && OutputInterface::VERBOSITY_VERBOSE > $output->getVerbosity()) {
$output->writeln('');
$output->writeln('Re-run this command with <comment>-v</comment> option to get the full report');
}
if (!($expr = $input->getOption('fail-condition'))) {
return;
}
$el = new ExpressionLanguage();
$counts = array();
foreach ($analysis->getViolations() as $violation) {
if (!isset($counts[$violation->getCategory()])) {
$counts[$violation->getCategory()] = 0;
}
++$counts[$violation->getCategory()];
if (!isset($counts[$violation->getSeverity()])) {
$counts[$violation->getSeverity()] = 0;
}
++$counts[$violation->getSeverity()];
}
$vars = array('analysis' => $analysis, 'counts' => (object) $counts);
if ($el->evaluate($expr, $vars)) {
return 70;
}
}
private function postProcessConfigString($string, $parameters)
{
$language = new ExpressionLanguage();
$language->register('env', function ($str) {
// This implementation is only needed if you want to compile
// not needed when simply using the evaluator
throw new RuntimeException("The 'env' method is not yet compilable.");
}, function ($arguments, $str, $required = false) {
$res = getenv($str);
if (!$res && $required) {
throw new RuntimeException("Required environment variable '{$str}' is not defined");
}
return $res;
});
preg_match_all('~\\{\\{(.*?)\\}\\}~', $string, $matches);
$variables = array();
//$variables['hello']='world';
foreach ($matches[1] as $match) {
$out = $language->evaluate($match, $variables);
$string = str_replace('{{' . $match . '}}', $out, $string);
}
// Inject parameters for strings between % characters
if (substr($string, 0, 1) == '%' && substr($string, -1, 1) == '%') {
$string = trim($string, '%');
if (!isset($parameters[$string])) {
throw new RuntimeException("Required parameter '{$string}' not defined");
}
$string = $parameters[$string];
}
return $string;
}
/**
* @param $step
* @return bool|string
*/
private function executeCondition(WizardStep $step)
{
if (null !== $step->getCondition()) {
return $this->expressionLanguage->evaluate($step->getCondition(), $this->getValues());
}
return true;
}
public function it_evaluates_the_rule_based_on_subject_to_false_when_exception_is_thrown(RuleInterface $rule, RuleSubjectInterface $subject, LoggerInterface $logger, ExpressionLanguage $expression)
{
$rule->getExpression()->shouldBeCalled();
$subject->getSubjectType()->shouldBeCalled();
$expression->evaluate(Argument::type('string'), Argument::type('array'))->willReturn(false);
$logger->error(Argument::type('string'))->shouldBeCalled();
$this->evaluate($rule, $subject)->shouldReturn(false);
}
public function testCachingForOverriddenVariableNames()
{
$expressionLanguage = new ExpressionLanguage();
$expression = 'a + b';
$expressionLanguage->evaluate($expression, array('a' => 1, 'b' => 1));
$result = $expressionLanguage->compile($expression, array('a', 'B' => 'b'));
$this->assertSame('($a + $B)', $result);
}
/**
* Prepares the fake parameters
*
* @param array $pathVariables
* @param array $fakeParameters
*
* @return array
*/
public function prepareFakeParameters(array $pathVariables, array $fakeParameters = [])
{
$placeholders = [];
foreach ($pathVariables as $pathVariable) {
if (isset($fakeParameters[$pathVariable])) {
try {
$placeholders[$pathVariable] = $this->language->evaluate($fakeParameters[$pathVariable], $this->expressionContext);
} catch (SyntaxError $e) {
// if the compilation fails, we just use the text as string
// this allows arbitrary strings, which weren't meant as expression
$placeholders[$pathVariable] = $fakeParameters[$pathVariable];
}
} else {
$placeholders[$pathVariable] = 1;
}
}
return $placeholders;
}
/**
* Evaluates expression
*
* @param $expression
*
* @return string
* @throws BuildException
*/
private function evaluate($expression)
{
try {
$evaluatedExpression = $this->expressionLanguage->evaluate($expression, $this->data);
} catch (\Exception $e) {
throw new BuildException($e->getMessage());
}
return $evaluatedExpression;
}
