public function __construct($scanner, $_symTable)
{
parent::requireKeyword($scanner, 'case');
$scanner->next();
$this->condition = new Expression($scanner, $_symTable);
parent::requireKeyword($scanner, 'of');
$scanner->next();
Globals::$switchDepth++;
while (true) {
if ($scanner->get()->isKeyword('else')) {
$scanner->next();
$this->default = CompoundStatement::smartParse($scanner, $_symTable);
parent::semicolonPass($scanner);
break;
}
$caseCondition = new Expression($scanner, $_symTable);
$caseCondition = TypeCast::tryTypeCast($caseCondition, $this->condition->symType, false);
parent::requireOperator($scanner, ':');
$scanner->next();
$caseStatements = CompoundStatement::smartParse($scanner, $_symTable);
$this->cases[] = ["condition" => $caseCondition, "statements" => $caseStatements];
parent::semicolonPass($scanner);
if ($scanner->get()->isKeyword('end')) {
break;
}
}
Globals::$switchDepth--;
parent::requireKeyword($scanner, 'end');
$scanner->next();
}
public function __construct($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, $_symTable)
{
if ($scanner->get()->isUnSignedConst()) {
$this->node = $scanner->get();
$this->symType = SymType::recognizeSimpleType($this->node, $_symTable);
$scanner->next();
return;
}
if ($scanner->get()->isLBracket()) {
$scanner->next();
$this->node = new Expression($scanner, $_symTable);
parent::requireOperator($scanner, ')');
$this->symType = $this->node->symType;
$scanner->next();
return;
}
if ($scanner->get()->isKeyword('not')) {
$this->keyword = $scanner->get();
$scanner->next();
$this->node = new Factor($scanner, $_symTable);
$this->node = TypeCast::tryTypeCast($this->node, 'boolean');
$this->symType = $this->node->symType;
return;
}
if ($scanner->get()->isIdentifier()) {
$identifier = $scanner->get();
$symbol = $_symTable->findRecursive($identifier->getValue());
if (is_a($symbol, 'vendor\\SemanticParser\\Nodes\\SymType')) {
$scanner->next();
if (!$scanner->get()->isLBracket()) {
parent::simpleException($scanner, ['<OPERATOR \'(\'>']);
}
$scanner->next();
$expression = new Expression($scanner, $_symTable);
if (!$scanner->get()->isRBracket()) {
parent::simpleException($scanner, ["<OPERATOR ')'>"]);
}
$scanner->next();
$class = get_class($expression->symType);
if (!$class::equal($expression->symType, $symbol)) {
$expression = new TypeCast($expression, $symbol);
}
$this->node = $expression;
$this->symType = $this->node->symType;
return;
}
$scanner->next();
if ($scanner->get()->isLBracket()) {
$actualParamList = new ActualParamList($scanner, $_symTable);
$this->node = new FunctionDesignator($identifier, $actualParamList, $_symTable);
} else {
$this->node = VariableAccess::parse($scanner, $_symTable, $identifier);
}
$this->symType = $this->node->symType;
return;
}
}
public function __construct($scanner, $_symTable)
{
if (!$scanner->get()->isIdentifier()) {
parent::simpleException($scanner, ['<IDENTIFIER>']);
}
$identifier = $scanner->get();
$scanner->next();
parent::requireOperator($scanner, '=');
$scanner->next();
$this->symbol = SymType::parse($scanner, $_symTable, $identifier->getValue());
$_symTable->append($this->symbol);
}
public function __construct($scanner)
{
$scanner->next();
$this->symTable = new SymTable(null);
Globals::init($this->symTable);
$this->heading = new ProgramHeading($scanner);
parent::semicolonPass($scanner);
$this->block = new Block($scanner, $this->symTable);
parent::requireOperator($scanner, '.');
$scanner->next();
if (!$scanner->get()->isEOF()) {
parent::simpleException($scanner, ['<EOF>']);
}
}
public function __construct($scanner, $_symTable)
{
$identifier = $scanner->get();
if (!$identifier->isIdentifier()) {
parent::simpleException($scanner, ['<IDENTIFIER>']);
}
$scanner->next();
parent::requireOperator($scanner, '=');
$constant = $scanner->nget();
if (!$constant->isConst()) {
parent::simpleException($scanner, ['<CONSTANT']);
}
$this->symbol = new SymConst($identifier->getValue(), $constant->getValue(), $constant->type, $_symTable);
$_symTable->append($this->symbol);
$scanner->next();
}
public function __construct($scanner, $_symTable)
{
$this->params = [];
parent::requireOperator($scanner, '(');
$scanner->next();
if ($scanner->get()->isRBracket()) {
$scanner->next();
$this->params = [];
return;
}
$this->params[] = new SimpleExpression($scanner, $_symTable);
while (!$scanner->get()->isRBracket()) {
parent::requireOperator($scanner, ',');
$scanner->next();
$this->params[] = new SimpleExpression($scanner, $_symTable);
}
$scanner->next();
}
protected static function parseSignature($scanner, $_symTable)
{
if (!$scanner->get()->isIdentifier()) {
parent::simpleException($scanner, ['<IDENTIFIER>']);
}
$symTable = new SymTable($_symTable);
$identifier = $scanner->get()->getValue();
$scanner->next();
if ($scanner->get()->isOperator('(')) {
$scanner->next();
$idx = 0;
while (true) {
$identifiers = [];
while ($scanner->get()->isIdentifier()) {
$identifiers[] = $scanner->get()->getValue();
$scanner->next();
if (!$scanner->get()->isOperator(',')) {
break;
}
$scanner->next();
}
if (count($identifiers) > 0) {
parent::requireOperator($scanner, ':');
$scanner->next();
$type = SymType::parseFixed($scanner, $symTable);
foreach ($identifiers as $arg) {
$symTable->append(new SymArg($arg, $type, $idx));
$idx++;
}
}
if ($scanner->get()->isOperator(')')) {
$scanner->next();
break;
}
parent::semicolonPass($scanner);
}
}
return [$identifier, $symTable];
}
