/**
* ReferenceDefinition ::= REFERENCES tbl_name (index_col_name,...)
* [MATCH FULL | MATCH PARTIAL | MATCH SIMPLE]
* [ON DELETE reference_option]
* [ON UPDATE reference_option]
*
* @return \TYPO3\CMS\Core\Database\Schema\Parser\AST\ReferenceDefinition
* @throws \TYPO3\CMS\Core\Database\Schema\Exception\StatementException
*/
protected function referenceDefinition() : AST\ReferenceDefinition
{
$this->match(Lexer::T_REFERENCES);
$tableName = $this->schemaObjectName();
$this->match(Lexer::T_OPEN_PARENTHESIS);
$referenceColumns = [];
$referenceColumns[] = $this->indexColumnName();
while ($this->lexer->isNextToken(Lexer::T_COMMA)) {
$this->match(Lexer::T_COMMA);
$referenceColumns[] = $this->indexColumnName();
}
$this->match(Lexer::T_CLOSE_PARENTHESIS);
$referenceDefinition = new AST\ReferenceDefinition($tableName, $referenceColumns);
while (!$this->lexer->isNextTokenAny([Lexer::T_COMMA, Lexer::T_CLOSE_PARENTHESIS])) {
switch ($this->lexer->lookahead['type']) {
case Lexer::T_MATCH:
$this->match(Lexer::T_MATCH);
$referenceDefinition->match = $this->lexer->lookahead['value'];
$this->lexer->moveNext();
break;
case Lexer::T_ON:
$this->match(Lexer::T_ON);
if ($this->lexer->isNextToken(Lexer::T_DELETE)) {
$this->match(Lexer::T_DELETE);
$referenceDefinition->onDelete = $this->referenceOption();
} else {
$this->match(Lexer::T_UPDATE);
$referenceDefinition->onUpdate = $this->referenceOption();
}
break;
default:
$this->syntaxError('MATCH, ON DELETE or ON UPDATE');
}
}
return $referenceDefinition;
}
