/**
* @dataProvider impactedVariablesProvider
*
* @param TemplateProcessing $templateProcessing
* @param array $expectedIdentifiers
*/
public function testImpactedVariables(TemplateProcessing $templateProcessing, array $expectedIdentifiers)
{
$this->assertEquals($expectedIdentifiers, Utils::templateProcessingImpactedVariables($templateProcessing));
}
/**
* Process the template processing.
*
* @throws \qtism\runtime\common\ProcessingException If an error occurs while executing the TemplateProcessing.
*/
public function process()
{
$context = $this->getContext();
$templateProcessing = $this->getComponent();
$trialCount = 0;
// Make a copy of possibly impacted variables.
$impactedVariables = Utils::templateProcessingImpactedVariables($templateProcessing);
$tplVarCopies = array();
foreach ($impactedVariables as $varIdentifier) {
$tplVarCopies[] = clone $context->getVariable($varIdentifier);
}
do {
$validConstraints = true;
try {
$trialCount++;
foreach ($templateProcessing->getTemplateRules() as $rule) {
$processor = $this->getRuleProcessorFactory()->createProcessor($rule);
$processor->setState($context);
$processor->process();
$this->trace($rule->getQtiClassName() . ' executed.');
}
} catch (RuleProcessingException $e) {
if ($e->getCode() === RuleProcessingException::EXIT_TEMPLATE) {
$this->trace('Termination of template processing.');
} else {
if ($e->getCode() === RuleProcessingException::TEMPLATE_CONSTRAINT_UNSATISFIED) {
$this->trace('Unsatisfied template constraint.');
// Reset variables with their originals.
foreach ($tplVarCopies as $copy) {
$context->getVariable($copy->getIdentifier())->setValue($copy->getDefaultValue());
$context->getVariable($copy->getIdentifier())->setDefaultValue($copy->getDefaultValue());
if ($copy instanceof ResponseVariable) {
$context->getVariable($copy->getIdentifier())->setCorrectResponse($copy->getCorrectResponse());
}
}
$validConstraints = false;
} else {
throw $e;
}
}
}
} while ($validConstraints === false && $trialCount < 100);
}