/**
* Display a textarea with validation for the entered aliases and expressions
*
* @param array $arFieldInfo Information about the current input field
* @param t3lib_tceforms $tceforms Form rendering library object
* @return string HTML code
*/
public function textCombinations($arFieldInfo, t3lib_tceforms $tceforms)
{
$text = $tceforms->getSingleField_typeText($arFieldInfo['table'], $arFieldInfo['field'], $arFieldInfo['row'], $arFieldInfo);
$evaluator = new Tx_Contexts_Context_Type_Combination_LogicalExpressionEvaluator();
$arTokens = $evaluator->tokenize($arFieldInfo['itemFormElValue']);
$arNotFound = array();
$arUnknownTokens = array();
foreach ($arTokens as $token) {
if (is_array($token) && $token[0] === Tx_Contexts_Context_Type_Combination_LogicalExpressionEvaluator::T_VAR) {
$contexts = Tx_Contexts_Context_Container::get()->initAll();
$bFound = false;
foreach ($contexts as $context) {
if ($context->getAlias() == $token[1]) {
$bFound = true;
}
}
if (!$bFound) {
$arNotFound[] = $token[1];
}
} elseif (is_array($token) && $token[0] === Tx_Contexts_Context_Type_Combination_LogicalExpressionEvaluator::T_UNKNOWN) {
$arUnknownTokens[] = $token[1];
}
}
if (!$arNotFound && !$arUnknownTokens) {
return $text;
}
$html = <<<HTM
{$text}<br />
<div class="typo3-message message-error">
<div class="message-body">
HTM;
if ($arNotFound) {
$strNotFound = implode(', ', $arNotFound);
$html .= <<<HTM
<div>
{$GLOBALS['LANG']->sL('LLL:EXT:contexts/Resources/Private/Language' . '/flexform.xml:aliasesNotFound')}: {$strNotFound}
</div>
HTM;
}
if ($arUnknownTokens) {
$strUnknownTokens = implode(', ', $arUnknownTokens);
$html .= <<<HTM
<div>
{$GLOBALS['LANG']->sL('LLL:EXT:contexts/Resources/Private/Language' . '/flexform.xml:unknownTokensFound')}: {$strUnknownTokens}
</div>
HTM;
}
$html .= <<<HTM
</div>
</div>
HTM;
return $html;
}
/**
* Handle a token: Creates scopes for each expression in parenthesis and
* does some syntax checks
*
* @param int|array $token
* @throws Tx_Contexts_Context_Type_Combination_LogicalExpressionEvaluator_Exception
* @return void
*/
protected function handleToken($token)
{
switch ($token) {
case self::T_NEGATE:
$this->nextTokenNegated = !$this->nextTokenNegated;
break;
case self::T_PL:
$this->pushScope();
break;
case self::T_PR:
$scope = $this->getScope();
$this->popScope();
if (!$scope->parentScope->parentScope) {
throw new Tx_Contexts_Context_Type_Combination_LogicalExpressionEvaluator_Exception('Found not opened closing parentheses');
}
if (is_int(end($this->tokens))) {
throw new Tx_Contexts_Context_Type_Combination_LogicalExpressionEvaluator_Exception('Unexpected )');
}
$this->parentScope->pushToken($scope);
break;
case self::T_AND:
case self::T_OR:
case self::T_XOR:
if (!$this->tokens || is_int(end($this->tokens))) {
throw new Tx_Contexts_Context_Type_Combination_LogicalExpressionEvaluator_Exception('Unexpected Operator');
}
$this->pushToken($token);
break;
case self::T_END:
if (is_int(end($this->tokens))) {
throw new Tx_Contexts_Context_Type_Combination_LogicalExpressionEvaluator_Exception('Unexpected end');
}
if ($this->getScope()->parentScope->parentScope) {
throw new Tx_Contexts_Context_Type_Combination_LogicalExpressionEvaluator_Exception('Missing closing parentheses');
}
break;
default:
if ($token[0] == self::T_VAR) {
if ($this->tokens && !is_int(end($this->tokens))) {
throw new Tx_Contexts_Context_Type_Combination_LogicalExpressionEvaluator_Exception('Unexpected variable');
}
$this->pushToken($token);
} else {
throw new Tx_Contexts_Context_Type_Combination_LogicalExpressionEvaluator_Exception('Unexpected "' . $token[1] . '"');
}
}
}
public function testAndNot()
{
$strExpression = 'a && !b';
$arValues = array('a' => true, 'b' => true);
$this->assertFalse(Tx_Contexts_Context_Type_Combination_LogicalExpressionEvaluator::run($strExpression, $arValues));
}
