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<?php
/**
* `CREATE` statement.
*/
declare(strict_types=1);
namespace PhpMyAdmin\SqlParser\Statements;
use PhpMyAdmin\SqlParser\Components\ArrayObj;
use PhpMyAdmin\SqlParser\Components\CreateDefinition;
use PhpMyAdmin\SqlParser\Components\DataType;
use PhpMyAdmin\SqlParser\Components\Expression;
use PhpMyAdmin\SqlParser\Components\OptionsArray;
use PhpMyAdmin\SqlParser\Components\ParameterDefinition;
use PhpMyAdmin\SqlParser\Components\PartitionDefinition;
use PhpMyAdmin\SqlParser\Parser;
use PhpMyAdmin\SqlParser\Statement;
use PhpMyAdmin\SqlParser\Token;
use PhpMyAdmin\SqlParser\TokensList;
use function is_array;
use function trim;
/**
* `CREATE` statement.
*/
class CreateStatement extends Statement
{
/**
* Options for `CREATE` statements.
*
* @var array
*/
public static $OPTIONS = [
// CREATE TABLE
'TEMPORARY' => 1,
// CREATE VIEW
'OR REPLACE' => 2,
'ALGORITHM' => [
3,
'var=',
],
// `DEFINER` is also used for `CREATE FUNCTION / PROCEDURE`
'DEFINER' => [
4,
'expr=',
],
// Used in `CREATE VIEW`
'SQL SECURITY' => [
5,
'var',
],
'DATABASE' => 6,
'EVENT' => 6,
'FUNCTION' => 6,
'INDEX' => 6,
'UNIQUE INDEX' => 6,
'FULLTEXT INDEX' => 6,
'SPATIAL INDEX' => 6,
'PROCEDURE' => 6,
'SERVER' => 6,
'TABLE' => 6,
'TABLESPACE' => 6,
'TRIGGER' => 6,
'USER' => 6,
'VIEW' => 6,
'SCHEMA' => 6,
// CREATE TABLE
'IF NOT EXISTS' => 7,
];
/**
* All database options.
*
* @var array
*/
public static $DB_OPTIONS = [
'CHARACTER SET' => [
1,
'var=',
],
'CHARSET' => [
1,
'var=',
],
'DEFAULT CHARACTER SET' => [
1,
'var=',
],
'DEFAULT CHARSET' => [
1,
'var=',
],
'DEFAULT COLLATE' => [
2,
'var=',
],
'COLLATE' => [
2,
'var=',
],
];
/**
* All table options.
*
* @var array
*/
public static $TABLE_OPTIONS = [
'ENGINE' => [
1,
'var=',
],
'AUTO_INCREMENT' => [
2,
'var=',
],
'AVG_ROW_LENGTH' => [
3,
'var',
],
'CHARACTER SET' => [
4,
'var=',
],
'CHARSET' => [
4,
'var=',
],
'DEFAULT CHARACTER SET' => [
4,
'var=',
],
'DEFAULT CHARSET' => [
4,
'var=',
],
'CHECKSUM' => [
5,
'var',
],
'DEFAULT COLLATE' => [
6,
'var=',
],
'COLLATE' => [
6,
'var=',
],
'COMMENT' => [
7,
'var=',
],
'CONNECTION' => [
8,
'var',
],
'DATA DIRECTORY' => [
9,
'var',
],
'DELAY_KEY_WRITE' => [
10,
'var',
],
'INDEX DIRECTORY' => [
11,
'var',
],
'INSERT_METHOD' => [
12,
'var',
],
'KEY_BLOCK_SIZE' => [
13,
'var',
],
'MAX_ROWS' => [
14,
'var',
],
'MIN_ROWS' => [
15,
'var',
],
'PACK_KEYS' => [
16,
'var',
],
'PASSWORD' => [
17,
'var',
],
'ROW_FORMAT' => [
18,
'var',
],
'TABLESPACE' => [
19,
'var',
],
'STORAGE' => [
20,
'var',
],
'UNION' => [
21,
'var',
],
];
/**
* All function options.
*
* @var array
*/
public static $FUNC_OPTIONS = [
'NOT' => [
2,
'var',
],
'FUNCTION' => [
3,
'var=',
],
'PROCEDURE' => [
3,
'var=',
],
'CONTAINS' => [
4,
'expr',
],
'NO' => [
4,
'var',
],
'READS' => [
4,
'var',
],
'MODIFIES' => [
4,
'expr',
],
'SQL SECURITY' => [
6,
'var',
],
'LANGUAGE' => [
7,
'var',
],
'COMMENT' => [
8,
'var',
],
'CREATE' => 1,
'DETERMINISTIC' => 2,
'DATA' => 5,
];
/**
* All trigger options.
*
* @var array
*/
public static $TRIGGER_OPTIONS = [
'BEFORE' => 1,
'AFTER' => 1,
'INSERT' => 2,
'UPDATE' => 2,
'DELETE' => 2,
];
/**
* The name of the entity that is created.
*
* Used by all `CREATE` statements.
*
* @var Expression
*/
public $name;
/**
* The options of the entity (table, procedure, function, etc.).
*
* Used by `CREATE TABLE`, `CREATE FUNCTION` and `CREATE PROCEDURE`.
*
* @see static::$TABLE_OPTIONS
* @see static::$FUNC_OPTIONS
* @see static::$TRIGGER_OPTIONS
*
* @var OptionsArray
*/
public $entityOptions;
/**
* If `CREATE TABLE`, a list of columns and keys.
* If `CREATE VIEW`, a list of columns.
*
* Used by `CREATE TABLE` and `CREATE VIEW`.
*
* @var CreateDefinition[]|ArrayObj
*/
public $fields;
/**
* If `CREATE TABLE ... SELECT`.
* If `CREATE VIEW AS ` ... SELECT`.
*
* Used by `CREATE TABLE`, `CREATE VIEW`
*
* @var SelectStatement|null
*/
public $select;
/**
* If `CREATE TABLE ... LIKE`.
*
* Used by `CREATE TABLE`
*
* @var Expression
*/
public $like;
/**
* Expression used for partitioning.
*
* @var string
*/
public $partitionBy;
/**
* The number of partitions.
*
* @var int
*/
public $partitionsNum;
/**
* Expression used for subpartitioning.
*
* @var string
*/
public $subpartitionBy;
/**
* The number of subpartitions.
*
* @var int
*/
public $subpartitionsNum;
/**
* The partition of the new table.
*
* @var PartitionDefinition[]
*/
public $partitions;
/**
* If `CREATE TRIGGER` the name of the table.
*
* Used by `CREATE TRIGGER`.
*
* @var Expression
*/
public $table;
/**
* The return data type of this routine.
*
* Used by `CREATE FUNCTION`.
*
* @var DataType
*/
public $return;
/**
* The parameters of this routine.
*
* Used by `CREATE FUNCTION` and `CREATE PROCEDURE`.
*
* @var ParameterDefinition[]
*/
public $parameters;
/**
* The body of this function or procedure.
* For views, it is the select statement that creates the view.
* Used by `CREATE FUNCTION`, `CREATE PROCEDURE` and `CREATE VIEW`.
*
* @var Token[]|string
*/
public $body = [];
/**
* @return string
*/
public function build()
{
$fields = '';
if (! empty($this->fields)) {
if (is_array($this->fields)) {
$fields = CreateDefinition::build($this->fields) . ' ';
} elseif ($this->fields instanceof ArrayObj) {
$fields = ArrayObj::build($this->fields);
}
}
if ($this->options->has('DATABASE') || $this->options->has('SCHEMA')) {
return 'CREATE '
. OptionsArray::build($this->options) . ' '
. Expression::build($this->name) . ' '
. OptionsArray::build($this->entityOptions);
}
if ($this->options->has('TABLE')) {
if ($this->select !== null) {
return 'CREATE '
. OptionsArray::build($this->options) . ' '
. Expression::build($this->name) . ' '
. $this->select->build();
}
if ($this->like !== null) {
return 'CREATE '
. OptionsArray::build($this->options) . ' '
. Expression::build($this->name) . ' LIKE '
. Expression::build($this->like);
}
$partition = '';
if (! empty($this->partitionBy)) {
$partition .= "\nPARTITION BY " . $this->partitionBy;
}
if (! empty($this->partitionsNum)) {
$partition .= "\nPARTITIONS " . $this->partitionsNum;
}
if (! empty($this->subpartitionBy)) {
$partition .= "\nSUBPARTITION BY " . $this->subpartitionBy;
}
if (! empty($this->subpartitionsNum)) {
$partition .= "\nSUBPARTITIONS " . $this->subpartitionsNum;
}
if (! empty($this->partitions)) {
$partition .= "\n" . PartitionDefinition::build($this->partitions);
}
return 'CREATE '
. OptionsArray::build($this->options) . ' '
. Expression::build($this->name) . ' '
. $fields
. OptionsArray::build($this->entityOptions)
. $partition;
} elseif ($this->options->has('VIEW')) {
return 'CREATE '
. OptionsArray::build($this->options) . ' '
. Expression::build($this->name) . ' '
. $fields . ' AS ' . ($this->select ? $this->select->build() : '')
. (! empty($this->body) ? TokensList::build($this->body) : '') . ' '
. OptionsArray::build($this->entityOptions);
} elseif ($this->options->has('TRIGGER')) {
return 'CREATE '
. OptionsArray::build($this->options) . ' '
. Expression::build($this->name) . ' '
. OptionsArray::build($this->entityOptions) . ' '
. 'ON ' . Expression::build($this->table) . ' '
. 'FOR EACH ROW ' . TokensList::build($this->body);
} elseif ($this->options->has('PROCEDURE') || $this->options->has('FUNCTION')) {
$tmp = '';
if ($this->options->has('FUNCTION')) {
$tmp = 'RETURNS ' . DataType::build($this->return);
}
return 'CREATE '
. OptionsArray::build($this->options) . ' '
. Expression::build($this->name) . ' '
. ParameterDefinition::build($this->parameters) . ' '
. $tmp . ' ' . OptionsArray::build($this->entityOptions) . ' '
. TokensList::build($this->body);
}
return 'CREATE '
. OptionsArray::build($this->options) . ' '
. Expression::build($this->name) . ' '
. TokensList::build($this->body);
}
/**
* @param Parser $parser the instance that requests parsing
* @param TokensList $list the list of tokens to be parsed
*/
public function parse(Parser $parser, TokensList $list)
{
++$list->idx; // Skipping `CREATE`.
// Parsing options.
$this->options = OptionsArray::parse($parser, $list, static::$OPTIONS);
++$list->idx; // Skipping last option.
$isDatabase = $this->options->has('DATABASE') || $this->options->has('SCHEMA');
$fieldName = $isDatabase ? 'database' : 'table';
// Parsing the field name.
$this->name = Expression::parse(
$parser,
$list,
[
'parseField' => $fieldName,
'breakOnAlias' => true,
]
);
if (! isset($this->name) || ($this->name === '')) {
$parser->error('The name of the entity was expected.', $list->tokens[$list->idx]);
} else {
++$list->idx; // Skipping field.
}
/**
* Token parsed at this moment.
*
* @var Token
*/
$token = $list->tokens[$list->idx];
$nextidx = $list->idx + 1;
while ($nextidx < $list->count && $list->tokens[$nextidx]->type === Token::TYPE_WHITESPACE) {
++$nextidx;
}
if ($isDatabase) {
$this->entityOptions = OptionsArray::parse($parser, $list, static::$DB_OPTIONS);
} elseif ($this->options->has('TABLE')) {
if (($token->type === Token::TYPE_KEYWORD) && ($token->keyword === 'SELECT')) {
/* CREATE TABLE ... SELECT */
$this->select = new SelectStatement($parser, $list);
} elseif (
($token->type === Token::TYPE_KEYWORD) && ($token->keyword === 'AS')
&& ($list->tokens[$nextidx]->type === Token::TYPE_KEYWORD)
&& ($list->tokens[$nextidx]->value === 'SELECT')
) {
/* CREATE TABLE ... AS SELECT */
$list->idx = $nextidx;
$this->select = new SelectStatement($parser, $list);
} elseif ($token->type === Token::TYPE_KEYWORD && $token->keyword === 'LIKE') {
/* CREATE TABLE `new_tbl` LIKE 'orig_tbl' */
$list->idx = $nextidx;
$this->like = Expression::parse(
$parser,
$list,
[
'parseField' => 'table',
'breakOnAlias' => true,
]
);
// The 'LIKE' keyword was found, but no table_name was found next to it
if ($this->like === null) {
$parser->error('A table name was expected.', $list->tokens[$list->idx]);
}
} else {
$this->fields = CreateDefinition::parse($parser, $list);
if (empty($this->fields)) {
$parser->error('At least one column definition was expected.', $list->tokens[$list->idx]);
}
++$list->idx;
$this->entityOptions = OptionsArray::parse($parser, $list, static::$TABLE_OPTIONS);
/**
* The field that is being filled (`partitionBy` or
* `subpartitionBy`).
*
* @var string
*/
$field = null;
/**
* The number of brackets. `false` means no bracket was found
* previously. At least one bracket is required to validate the
* expression.
*
* @var int|bool
*/
$brackets = false;
/*
* Handles partitions.
*/
for (; $list->idx < $list->count; ++$list->idx) {
/**
* Token parsed at this moment.
*
* @var Token
*/
$token = $list->tokens[$list->idx];
// End of statement.
if ($token->type === Token::TYPE_DELIMITER) {
break;
}
// Skipping comments.
if ($token->type === Token::TYPE_COMMENT) {
continue;
}
if (($token->type === Token::TYPE_KEYWORD) && ($token->keyword === 'PARTITION BY')) {
$field = 'partitionBy';
$brackets = false;
} elseif (($token->type === Token::TYPE_KEYWORD) && ($token->keyword === 'SUBPARTITION BY')) {
$field = 'subpartitionBy';
$brackets = false;
} elseif (($token->type === Token::TYPE_KEYWORD) && ($token->keyword === 'PARTITIONS')) {
$token = $list->getNextOfType(Token::TYPE_NUMBER);
--$list->idx; // `getNextOfType` also advances one position.
$this->partitionsNum = $token->value;
} elseif (($token->type === Token::TYPE_KEYWORD) && ($token->keyword === 'SUBPARTITIONS')) {
$token = $list->getNextOfType(Token::TYPE_NUMBER);
--$list->idx; // `getNextOfType` also advances one position.
$this->subpartitionsNum = $token->value;
} elseif (! empty($field)) {
/*
* Handling the content of `PARTITION BY` and `SUBPARTITION BY`.
*/
// Counting brackets.
if ($token->type === Token::TYPE_OPERATOR) {
if ($token->value === '(') {
// This is used instead of `++$brackets` because,
// initially, `$brackets` is `false` cannot be
// incremented.
$brackets += 1;
} elseif ($token->value === ')') {
--$brackets;
}
}
// Building the expression used for partitioning.
$this->$field .= $token->type === Token::TYPE_WHITESPACE ? ' ' : $token->token;
// Last bracket was read, the expression ended.
// Comparing with `0` and not `false`, because `false` means
// that no bracket was found and at least one must is
// required.
if ($brackets === 0) {
$this->$field = trim($this->$field);
$field = null;
}
} elseif (($token->type === Token::TYPE_OPERATOR) && ($token->value === '(')) {
if (! empty($this->partitionBy)) {
$this->partitions = ArrayObj::parse(
$parser,
$list,
['type' => 'PhpMyAdmin\\SqlParser\\Components\\PartitionDefinition']
);
}
break;
}
}
}
} elseif ($this->options->has('PROCEDURE') || $this->options->has('FUNCTION')) {
$this->parameters = ParameterDefinition::parse($parser, $list);
if ($this->options->has('FUNCTION')) {
$prevToken = $token;
$token = $list->getNextOfType(Token::TYPE_KEYWORD);
if ($token === null || $token->keyword !== 'RETURNS') {
$parser->error('A "RETURNS" keyword was expected.', $token ?? $prevToken);
} else {
++$list->idx;
$this->return = DataType::parse($parser, $list);
}
}
++$list->idx;
$this->entityOptions = OptionsArray::parse($parser, $list, static::$FUNC_OPTIONS);
++$list->idx;
for (; $list->idx < $list->count; ++$list->idx) {
$token = $list->tokens[$list->idx];
$this->body[] = $token;
}
} elseif ($this->options->has('VIEW')) {
/** @var Token $token */
$token = $list->getNext(); // Skipping whitespaces and comments.
// Parsing columns list.
if (($token->type === Token::TYPE_OPERATOR) && ($token->value === '(')) {
--$list->idx; // getNext() also goes forward one field.
$this->fields = ArrayObj::parse($parser, $list);
++$list->idx; // Skipping last token from the array.
$list->getNext();
}
// Parsing the SELECT expression if the view started with it.
if (
$token->type === Token::TYPE_KEYWORD
&& $token->keyword === 'AS'
&& $list->tokens[$nextidx]->type === Token::TYPE_KEYWORD
&& $list->tokens[$nextidx]->value === 'SELECT'
) {
$list->idx = $nextidx;
$this->select = new SelectStatement($parser, $list);
}
// Parsing all other tokens
for (; $list->idx < $list->count; ++$list->idx) {
$token = $list->tokens[$list->idx];
if ($token->type === Token::TYPE_DELIMITER) {
break;
}
$this->body[] = $token;
}
} elseif ($this->options->has('TRIGGER')) {
// Parsing the time and the event.
$this->entityOptions = OptionsArray::parse($parser, $list, static::$TRIGGER_OPTIONS);
++$list->idx;
$list->getNextOfTypeAndValue(Token::TYPE_KEYWORD, 'ON');
++$list->idx; // Skipping `ON`.
// Parsing the name of the table.
$this->table = Expression::parse(
$parser,
$list,
[
'parseField' => 'table',
'breakOnAlias' => true,
]
);
++$list->idx;
$list->getNextOfTypeAndValue(Token::TYPE_KEYWORD, 'FOR EACH ROW');
++$list->idx; // Skipping `FOR EACH ROW`.
for (; $list->idx < $list->count; ++$list->idx) {
$token = $list->tokens[$list->idx];
$this->body[] = $token;
}
} else {
for (; $list->idx < $list->count; ++$list->idx) {
$token = $list->tokens[$list->idx];
if ($token->type === Token::TYPE_DELIMITER) {
break;
}
$this->body[] = $token;
}
}
}
}