/**
* @param Parser $parser The instance that requests parsing.
* @param TokensList $list The list of tokens to be parsed.
*
* @return void
*/
public function parse(Parser $parser, TokensList $list)
{
++$list->idx;
// Skipping `ALTER`.
$this->options = OptionsArray::parse($parser, $list, static::$OPTIONS);
// Skipping `TABLE`.
$list->getNextOfTypeAndValue(Token::TYPE_KEYWORD, 'TABLE');
// Parsing affected table.
$this->table = Expression::parse($parser, $list, array('noAlias' => true, 'noBrackets' => true));
++$list->idx;
// Skipping field.
/**
* The state of the parser.
*
* Below are the states of the parser.
*
* 0 -----------------[ alter operation ]-----------------> 1
*
* 1 -------------------------[ , ]-----------------------> 0
*
* @var int $state
*/
$state = 0;
for (; $list->idx < $list->count; ++$list->idx) {
/**
* Token parsed at this moment.
*
* @var Token $token
*/
$token = $list->tokens[$list->idx];
// End of statement.
if ($token->type === Token::TYPE_DELIMITER) {
break;
}
// Skipping whitespaces and comments.
if ($token->type === Token::TYPE_WHITESPACE || $token->type === Token::TYPE_COMMENT) {
continue;
}
if ($state === 0) {
$this->altered[] = AlterOperation::parse($parser, $list);
$state = 1;
} elseif ($state === 1) {
if ($token->type === Token::TYPE_OPERATOR && $token->value === ',') {
$state = 0;
}
}
}
}
/**
* @param Parser $parser The instance that requests parsing.
* @param TokensList $list The list of tokens to be parsed.
*
* @return void
*/
public function parse(Parser $parser, TokensList $list)
{
++$list->idx;
// Skipping `ALTER`.
$this->options = OptionsArray::parse($parser, $list, static::$OPTIONS);
++$list->idx;
// Parsing affected table.
$this->table = Expression::parse($parser, $list, array('parseField' => 'table', 'breakOnAlias' => true));
++$list->idx;
// Skipping field.
/**
* The state of the parser.
*
* Below are the states of the parser.
*
* 0 -----------------[ alter operation ]-----------------> 1
*
* 1 -------------------------[ , ]-----------------------> 0
*
* @var int $state
*/
$state = 0;
for (; $list->idx < $list->count; ++$list->idx) {
/**
* Token parsed at this moment.
*
* @var Token $token
*/
$token = $list->tokens[$list->idx];
// End of statement.
if ($token->type === Token::TYPE_DELIMITER) {
break;
}
// Skipping whitespaces and comments.
if ($token->type === Token::TYPE_WHITESPACE || $token->type === Token::TYPE_COMMENT) {
continue;
}
if ($state === 0) {
$options = array();
if ($this->options->has('DATABASE')) {
$options = AlterOperation::$DB_OPTIONS;
} elseif ($this->options->has('TABLE')) {
$options = AlterOperation::$TABLE_OPTIONS;
} elseif ($this->options->has('VIEW')) {
$options = AlterOperation::$VIEW_OPTIONS;
}
$this->altered[] = AlterOperation::parse($parser, $list, $options);
$state = 1;
} elseif ($state === 1) {
if ($token->type === Token::TYPE_OPERATOR && $token->value === ',') {
$state = 0;
}
}
}
}