public function __construct($scanner, $_symTable, $array)
{
$arrayType = $array->variable->symType;
if (!is_a($arrayType, 'vendor\\SemanticParser\\Nodes\\SymArrayType')) {
SemanticException::varAccessTypeMismatch($scanner, $arrayType, 'array');
}
$this->array = $array;
$this->indexes = [];
$continue = true;
$idx = 0;
while (!$scanner->get()->isOperator(']')) {
if (!$continue) {
parent::simpleException($scanner, ["<OPERATOR ']'>"]);
}
$this->indexes[$idx] = new Expression($scanner, $_symTable);
if (!$arrayType->checkIndex($this->indexes[$idx], $idx, $_symTable)) {
SemanticException::raw($scanner, "Array index type mismatch");
}
$idx++;
$continue = $scanner->get()->isOperator(',');
if ($scanner->get()->isOperator(']')) {
break;
}
$scanner->next();
}
if ($idx != count($arrayType->dimensions)) {
SemanticException::raw($scanner, "Array should be dereferenced completely");
}
$this->symType = $arrayType->type;
if ($continue) {
parent::simpleException($scanner, ['<INDEX-EXPRESSION>']);
}
$scanner->next();
}
public function checkIndex($expression, $idx, $_symTable)
{
if (count($this->dimensions) <= $idx) {
SemanticException::raw('Array has already completely dereferenced');
}
return SymSimpleType::equal($expression->symType, $_symTable->findRecursive('integer'));
}
public function __construct($scanner, $_symTable)
{
parent::requireKeyword($scanner, 'for');
$scanner->next();
$this->counter = VariableAccess::parse($scanner, $_symTable);
if (!SymSimpleType::equal($this->counter->symType, Globals::getSimpleType('integer'))) {
SemanticException::raw($scanner, 'Counter must be integer');
}
parent::requireOperator($scanner, ':=');
$scanner->next();
$this->from = new Expression($scanner, $_symTable);
$this->from = TypeCast::tryTypeCast($this->from, 'integer');
switch ($scanner->get()->getValue()) {
case 'to':
$this->direction = self::DIRECTION_ASC;
break;
case 'downto':
$this->direction = self::DIRECTION_DESC;
break;
default:
parent::simpleException($scanner, ['<KEYWORD \'to\'>', '<KEYWORD \'downto\'>']);
}
$scanner->next();
$this->to = new Expression($scanner, $_symTable);
$this->to = TypeCast::tryTypeCast($this->to, 'integer');
parent::requireKeyword($scanner, 'do');
$scanner->next();
Globals::$loopDepth++;
$this->statements = CompoundStatement::smartParse($scanner, $_symTable);
Globals::$loopDepth--;
}
public function __construct($scanner, $_symTable, $identifier)
{
$this->identifier = $identifier;
$this->from = self::getRangeValue($scanner, $_symTable);
$dots = $scanner->nget();
if (!$dots->isOperator('..')) {
Node::simpleException($scanner, ['<OPERATOR \'..\'>']);
}
$scanner->next();
$this->to = self::getRangeValue($scanner, $_symTable);
if ($this->from > $this->to) {
SemanticException::raw($scanner, 'Found Subrange type, but FROM > TO');
}
$scanner->next();
}
public function appendForwardable($forwardable)
{
$pretendent = $this->findRecursive($forwardable->identifier);
if (!is_a($forwardable, 'vendor\\SemanticParser\\Nodes\\SymProc')) {
SemanticException::raw(null, '{$forwardable->identifier} is not forwardable!');
}
$pretendent = $this->find($forwardable->identifier);
if ($pretendent == null) {
$this->append($forwardable);
return;
}
if (is_a($pretendent, 'vendor\\SemanticParser\\Nodes\\SymProc') && $pretendent->isDefined()) {
SemanticException::raw(null, "<{$forwardable->identifier}> has been already defined!");
}
if (get_class($forwardable) != get_class($pretendent)) {
SemanticException::raw(null, "<{$forwardable->identifier}> definition and declaration are different!");
}
$class = get_class($forwardable);
if (!$class::cmpSignature($forwardable, $pretendent)) {
SemanticException::raw(null, "<{$forwardable->identifier}> definition and declaration are different!");
}
$pretendent->mergeWith($forwardable);
}
