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|
<?php
/**
* `INSERT` statement.
*/
declare(strict_types=1);
namespace PhpMyAdmin\SqlParser\Statements;
use PhpMyAdmin\SqlParser\Components\Array2d;
use PhpMyAdmin\SqlParser\Components\ArrayObj;
use PhpMyAdmin\SqlParser\Components\IntoKeyword;
use PhpMyAdmin\SqlParser\Components\OptionsArray;
use PhpMyAdmin\SqlParser\Components\SetOperation;
use PhpMyAdmin\SqlParser\Parser;
use PhpMyAdmin\SqlParser\Statement;
use PhpMyAdmin\SqlParser\Token;
use PhpMyAdmin\SqlParser\TokensList;
/**
* `INSERT` statement.
*
* INSERT [LOW_PRIORITY | DELAYED | HIGH_PRIORITY] [IGNORE]
* [INTO] tbl_name
* [PARTITION (partition_name,...)]
* [(col_name,...)]
* {VALUES | VALUE} ({expr | DEFAULT},...),(...),...
* [ ON DUPLICATE KEY UPDATE
* col_name=expr
* [, col_name=expr] ... ]
*
* or
*
* INSERT [LOW_PRIORITY | DELAYED | HIGH_PRIORITY] [IGNORE]
* [INTO] tbl_name
* [PARTITION (partition_name,...)]
* SET col_name={expr | DEFAULT}, ...
* [ ON DUPLICATE KEY UPDATE
* col_name=expr
* [, col_name=expr] ... ]
*
* or
*
* INSERT [LOW_PRIORITY | HIGH_PRIORITY] [IGNORE]
* [INTO] tbl_name
* [PARTITION (partition_name,...)]
* [(col_name,...)]
* SELECT ...
* [ ON DUPLICATE KEY UPDATE
* col_name=expr
* [, col_name=expr] ... ]
*/
class InsertStatement extends Statement
{
/**
* Options for `INSERT` statements.
*
* @var array
*/
public static $OPTIONS = [
'LOW_PRIORITY' => 1,
'DELAYED' => 2,
'HIGH_PRIORITY' => 3,
'IGNORE' => 4,
];
/**
* Tables used as target for this statement.
*
* @var IntoKeyword
*/
public $into;
/**
* Values to be inserted.
*
* @var ArrayObj[]|null
*/
public $values;
/**
* If SET clause is present
* holds the SetOperation.
*
* @var SetOperation[]
*/
public $set;
/**
* If SELECT clause is present
* holds the SelectStatement.
*
* @var SelectStatement
*/
public $select;
/**
* If ON DUPLICATE KEY UPDATE clause is present
* holds the SetOperation.
*
* @var SetOperation[]
*/
public $onDuplicateSet;
/**
* @return string
*/
public function build()
{
$ret = 'INSERT ' . $this->options;
$ret = trim($ret) . ' INTO ' . $this->into;
if ($this->values !== null && count($this->values) > 0) {
$ret .= ' VALUES ' . Array2d::build($this->values);
} elseif ($this->set !== null && count($this->set) > 0) {
$ret .= ' SET ' . SetOperation::build($this->set);
} elseif ($this->select !== null && strlen((string) $this->select) > 0) {
$ret .= ' ' . $this->select->build();
}
if ($this->onDuplicateSet !== null && count($this->onDuplicateSet) > 0) {
$ret .= ' ON DUPLICATE KEY UPDATE ' . SetOperation::build($this->onDuplicateSet);
}
return $ret;
}
/**
* @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 `INSERT`.
// parse any options if provided
$this->options = OptionsArray::parse(
$parser,
$list,
static::$OPTIONS
);
++$list->idx;
/**
* The state of the parser.
*
* Below are the states of the parser.
*
* 0 ---------------------------------[ INTO ]----------------------------------> 1
*
* 1 -------------------------[ VALUES/VALUE/SET/SELECT ]-----------------------> 2
*
* 2 -------------------------[ ON DUPLICATE KEY UPDATE ]-----------------------> 3
*
* @var int
*/
$state = 0;
/**
* For keeping track of semi-states on encountering
* ON DUPLICATE KEY UPDATE ...
*/
$miniState = 0;
for (; $list->idx < $list->count; ++$list->idx) {
/**
* Token parsed at this moment.
*
* @var Token
*/
$token = $list->tokens[$list->idx];
// End of statement.
if ($token->type === Token::TYPE_DELIMITER) {
break;
}
// Skipping whitespaces and comments.
if (($token->type === Token::TYPE_WHITESPACE) || ($token->type === Token::TYPE_COMMENT)) {
continue;
}
if ($state === 0) {
if ($token->type === Token::TYPE_KEYWORD
&& $token->keyword !== 'INTO'
) {
$parser->error('Unexpected keyword.', $token);
break;
}
++$list->idx;
$this->into = IntoKeyword::parse(
$parser,
$list,
['fromInsert' => true]
);
$state = 1;
} elseif ($state === 1) {
if ($token->type === Token::TYPE_KEYWORD) {
if ($token->keyword === 'VALUE'
|| $token->keyword === 'VALUES'
) {
++$list->idx; // skip VALUES
$this->values = Array2d::parse($parser, $list);
} elseif ($token->keyword === 'SET') {
++$list->idx; // skip SET
$this->set = SetOperation::parse($parser, $list);
} elseif ($token->keyword === 'SELECT') {
$this->select = new SelectStatement($parser, $list);
} else {
$parser->error(
'Unexpected keyword.',
$token
);
break;
}
$state = 2;
$miniState = 1;
} else {
$parser->error(
'Unexpected token.',
$token
);
break;
}
} elseif ($state === 2) {
$lastCount = $miniState;
if ($miniState === 1 && $token->keyword === 'ON') {
++$miniState;
} elseif ($miniState === 2 && $token->keyword === 'DUPLICATE') {
++$miniState;
} elseif ($miniState === 3 && $token->keyword === 'KEY') {
++$miniState;
} elseif ($miniState === 4 && $token->keyword === 'UPDATE') {
++$miniState;
}
if ($lastCount === $miniState) {
$parser->error(
'Unexpected token.',
$token
);
break;
}
if ($miniState === 5) {
++$list->idx;
$this->onDuplicateSet = SetOperation::parse($parser, $list);
$state = 3;
}
}
}
--$list->idx;
}
}
|
