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Throw InvalidArgumentException if argument to resolve() is neither callable nor an instance of Generator

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This commit is contained in:
Niklas Keller 2016-05-11 18:49:25 +02:00
parent 92e004264c
commit d9aa8573f0
1 changed files with 4 additions and 2 deletions
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6
lib/functions.php
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@ -757,10 +757,12 @@ function coroutine(callable $func) {
*/ */
function resolve($generator) { function resolve($generator) {
if (!$generator instanceof \Generator) { if (!$generator instanceof \Generator) {
if (is_callable($generator)) { if (!is_callable($generator)) {
$generator = call_user_func($generator); throw new \InvalidArgumentException('Coroutine to resolve must be callable or instance of Generator');
} }
$generator = call_user_func($generator);
if (!$generator instanceof \Generator) { if (!$generator instanceof \Generator) {
throw new \LogicException('Callable passed to resolve() did not return an instance of Generator'); throw new \LogicException('Callable passed to resolve() did not return an instance of Generator');
} }