Apply phpmyadmin/coding-standard

Signed-off-by: Maurício Meneghini Fauth <mauriciofauth@gmail.com>

25 files changed, 423 insertions, 265 deletions

diff --git a/src/Components/AlterOperation.php b/src/Components/AlterOperation.php
index e3893f7..25a62a5 100644
--- a/src/Components/AlterOperation.php
+++ b/src/Components/AlterOperation.php
@@ -25,28 +25,67 @@ class AlterOperation extends Component
      *
      * @var array
      */
-    public static $DB_OPTIONS = array(
-        'CHARACTER SET' => array(1, 'var'),
-        'CHARSET' => array(1, 'var'),
-        'DEFAULT CHARACTER SET' => array(1, 'var'),
-        'DEFAULT CHARSET' => array(1, 'var'),
-        'UPGRADE' => array(1, 'var'),
-        'COLLATE' => array(2, 'var'),
-        'DEFAULT COLLATE' => array(2, 'var'),
-    );
+    public static $DB_OPTIONS = [
+        'CHARACTER SET' => [
+            1,
+            'var',
+        ],
+        'CHARSET' => [
+            1,
+            'var',
+        ],
+        'DEFAULT CHARACTER SET' => [
+            1,
+            'var',
+        ],
+        'DEFAULT CHARSET' => [
+            1,
+            'var',
+        ],
+        'UPGRADE' => [
+            1,
+            'var',
+        ],
+        'COLLATE' => [
+            2,
+            'var',
+        ],
+        'DEFAULT COLLATE' => [
+            2,
+            'var',
+        ],
+    ];
 
     /**
      * All table options.
      *
      * @var array
      */
-    public static $TABLE_OPTIONS = array(
-        'ENGINE' => array(1, 'var='),
-        'AUTO_INCREMENT' => array(1, 'var='),
-        'AVG_ROW_LENGTH' => array(1, 'var'),
-        'MAX_ROWS' => array(1, 'var'),
-        'ROW_FORMAT' => array(1, 'var'),
-        'COMMENT' => array(1, 'var'),
+    public static $TABLE_OPTIONS = [
+        'ENGINE' => [
+            1,
+            'var=',
+        ],
+        'AUTO_INCREMENT' => [
+            1,
+            'var=',
+        ],
+        'AVG_ROW_LENGTH' => [
+            1,
+            'var',
+        ],
+        'MAX_ROWS' => [
+            1,
+            'var',
+        ],
+        'ROW_FORMAT' => [
+            1,
+            'var',
+        ],
+        'COMMENT' => [
+            1,
+            'var',
+        ],
         'ADD' => 1,
         'ALTER' => 1,
         'ANALYZE' => 1,
@@ -84,16 +123,16 @@ class AlterOperation extends Component
         'SPATIAL' => 2,
         'TABLESPACE' => 2,
         'INDEX' => 2,
-    );
+    ];
 
     /**
      * All view options.
      *
      * @var array
      */
-    public static $VIEW_OPTIONS = array(
+    public static $VIEW_OPTIONS = [
         'AS' => 1,
-    );
+    ];
 
     /**
      * Options of this operation.
@@ -114,7 +153,7 @@ class AlterOperation extends Component
      *
      * @var Token[]|string
      */
-    public $unknown = array();
+    public $unknown = [];
 
     /**
      * Constructor.
@@ -126,7 +165,7 @@ class AlterOperation extends Component
     public function __construct(
         $options = null,
         $field = null,
-        $unknown = array()
+        $unknown = []
     ) {
         $this->options = $options;
         $this->field = $field;
@@ -140,7 +179,7 @@ class AlterOperation extends Component
      *
      * @return AlterOperation
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
         $ret = new self();
 
@@ -212,10 +251,10 @@ class AlterOperation extends Component
                 $ret->field = Expression::parse(
                     $parser,
                     $list,
-                    array(
+                    [
                         'breakOnAlias' => true,
                         'parseField' => 'column',
-                    )
+                    ]
                 );
                 if ($ret->field === null) {
                     // No field was read. We go back one token so the next
@@ -232,11 +271,11 @@ class AlterOperation extends Component
                     } elseif (($token->value === ',') && ($brackets === 0)) {
                         break;
                     }
-                } elseif (!empty(Parser::$STATEMENT_PARSERS[$token->value])) {
+                } elseif (! empty(Parser::$STATEMENT_PARSERS[$token->value])) {
                     // We have reached the end of ALTER operation and suddenly found
                     // a start to new statement, but have not find a delimiter between them
 
-                    if (!($token->value === 'SET' && $list->tokens[$list->idx - 1]->value === 'CHARACTER')) {
+                    if (! ($token->value === 'SET' && $list->tokens[$list->idx - 1]->value === 'CHARACTER')) {
                         $parser->error(
                             'A new statement was found, but no delimiter between it and the previous one.',
                             $token
@@ -245,7 +284,7 @@ class AlterOperation extends Component
                     }
                 } elseif (array_key_exists($token->value, self::$DB_OPTIONS)
                     || (array_key_exists($token->value, self::$TABLE_OPTIONS)
-                    && !self::checkIfColumnDefinitionKeyword($token->value))
+                    && ! self::checkIfColumnDefinitionKeyword($token->value))
                 ) {
                     // This alter operation has finished, which means a comma was missing before start of new alter operation
                     $parser->error(
@@ -276,7 +315,7 @@ class AlterOperation extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         $ret = $component->options . ' ';
         if ((isset($component->field)) && ($component->field !== '')) {
@@ -293,8 +332,13 @@ class AlterOperation extends Component
      *
      * @param string $tokenValue Value of current token
      */
-    private static function checkIfColumnDefinitionKeyword($tokenValue) {
-        $common_options = array('AUTO_INCREMENT', 'COMMENT', 'DEFAULT');
+    private static function checkIfColumnDefinitionKeyword($tokenValue)
+    {
+        $common_options = [
+            'AUTO_INCREMENT',
+            'COMMENT',
+            'DEFAULT',
+        ];
         // Since AUTO_INCREMENT and COMMENT can be used for
         // both table as well as a specific column in the table
         return in_array($tokenValue, $common_options);
diff --git a/src/Components/Array2d.php b/src/Components/Array2d.php
index 984179c..ced529a 100644
--- a/src/Components/Array2d.php
+++ b/src/Components/Array2d.php
@@ -28,9 +28,9 @@ class Array2d extends Component
      *
      * @return ArrayObj[]
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
-        $ret = array();
+        $ret = [];
 
         /**
          * The number of values in each set.
@@ -124,7 +124,7 @@ class Array2d extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         return ArrayObj::build($component);
     }
diff --git a/src/Components/ArrayObj.php b/src/Components/ArrayObj.php
index e86ddfd..f968d87 100644
--- a/src/Components/ArrayObj.php
+++ b/src/Components/ArrayObj.php
@@ -25,14 +25,14 @@ class ArrayObj extends Component
      *
      * @var array
      */
-    public $raw = array();
+    public $raw = [];
 
     /**
      * The array that contains the processed value of each token.
      *
      * @var array
      */
-    public $values = array();
+    public $values = [];
 
     /**
      * Constructor.
@@ -40,7 +40,7 @@ class ArrayObj extends Component
      * @param array $raw    the unprocessed values
      * @param array $values the processed values
      */
-    public function __construct(array $raw = array(), array $values = array())
+    public function __construct(array $raw = [], array $values = [])
     {
         $this->raw = $raw;
         $this->values = $values;
@@ -53,9 +53,9 @@ class ArrayObj extends Component
      *
      * @return ArrayObj|Component[]
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
-        $ret = empty($options['type']) ? new self() : array();
+        $ret = empty($options['type']) ? new self() : [];
 
         /**
          * The last raw expression.
@@ -144,7 +144,7 @@ class ArrayObj extends Component
                 $ret[] = $options['type']::parse(
                     $parser,
                     $list,
-                    empty($options['typeOptions']) ? array() : $options['typeOptions']
+                    empty($options['typeOptions']) ? [] : $options['typeOptions']
                 );
             }
         }
@@ -176,11 +176,11 @@ class ArrayObj extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         if (is_array($component)) {
             return implode(', ', $component);
-        } elseif (!empty($component->raw)) {
+        } elseif (! empty($component->raw)) {
             return '(' . implode(', ', $component->raw) . ')';
         }
 
diff --git a/src/Components/CaseExpression.php b/src/Components/CaseExpression.php
index ab90768..d66ddc3 100644
--- a/src/Components/CaseExpression.php
+++ b/src/Components/CaseExpression.php
@@ -84,7 +84,7 @@ class CaseExpression extends Component
      *
      * @return CaseExpression
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
         $ret = new self();
 
@@ -121,26 +121,26 @@ class CaseExpression extends Component
 
             if ($state === 0) {
                 if ($token->type === Token::TYPE_KEYWORD) {
-                    switch($token->keyword) {
+                    switch ($token->keyword) {
                         case 'WHEN':
                             ++$list->idx; // Skip 'WHEN'
                             $new_condition = Condition::parse($parser, $list);
                             $type = 1;
                             $state = 1;
                             $ret->conditions[] = $new_condition;
-                        break;
+                            break;
                         case 'ELSE':
                             ++$list->idx; // Skip 'ELSE'
                             $ret->else_result = Expression::parse($parser, $list);
                             $state = 0; // last clause of CASE expression
-                        break;
+                            break;
                         case 'END':
                             $state = 3; // end of CASE expression
                             ++$list->idx;
-                        break 2;
+                            break 2;
                         default:
                             $parser->error('Unexpected keyword.', $token);
-                        break 2;
+                            break 2;
                     }
                 } else {
                     $ret->value = Expression::parse($parser, $list);
@@ -150,25 +150,25 @@ class CaseExpression extends Component
             } elseif ($state === 1) {
                 if ($type === 0) {
                     if ($token->type === Token::TYPE_KEYWORD) {
-                        switch($token->keyword) {
+                        switch ($token->keyword) {
                             case 'WHEN':
                                 ++$list->idx; // Skip 'WHEN'
                                 $new_value = Expression::parse($parser, $list);
                                 $state = 2;
                                 $ret->compare_values[] = $new_value;
-                            break;
+                                break;
                             case 'ELSE':
                                 ++$list->idx; // Skip 'ELSE'
                                 $ret->else_result = Expression::parse($parser, $list);
                                 $state = 0; // last clause of CASE expression
-                            break;
+                                break;
                             case 'END':
                                 $state = 3; // end of CASE expression
                                 ++$list->idx;
-                            break 2;
+                                break 2;
                             default:
                                 $parser->error('Unexpected keyword.', $token);
-                            break 2;
+                                break 2;
                         }
                     }
                 } else {
@@ -227,7 +227,7 @@ class CaseExpression extends Component
                 // Handle optional AS keyword before alias
                 if ($token->type === Token::TYPE_KEYWORD
                     && $token->keyword === 'AS') {
-                    if ($asFound || !empty($ret->alias)) {
+                    if ($asFound || ! empty($ret->alias)) {
                         $parser->error('Potential duplicate alias of CASE expression.', $token);
                         break;
                     }
@@ -245,11 +245,11 @@ class CaseExpression extends Component
 
                 if ($asFound
                     || $token->type === Token::TYPE_STRING
-                    || ($token->type === Token::TYPE_SYMBOL && !$token->flags & Token::FLAG_SYMBOL_VARIABLE)
+                    || ($token->type === Token::TYPE_SYMBOL && ! $token->flags & Token::FLAG_SYMBOL_VARIABLE)
                     || $token->type === Token::TYPE_NONE
                 ) {
                     // An alias is expected (the keyword `AS` was previously found).
-                    if (!empty($ret->alias)) {
+                    if (! empty($ret->alias)) {
                         $parser->error('An alias was previously found.', $token);
                         break;
                     }
@@ -279,7 +279,7 @@ class CaseExpression extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         $ret = 'CASE ';
         if (isset($component->value)) {
diff --git a/src/Components/Condition.php b/src/Components/Condition.php
index 2be0abd..83b80b2 100644
--- a/src/Components/Condition.php
+++ b/src/Components/Condition.php
@@ -25,14 +25,20 @@ class Condition extends Component
      *
      * @var array
      */
-    public static $DELIMITERS = array('&&', '||', 'AND', 'OR', 'XOR');
+    public static $DELIMITERS = [
+        '&&',
+        '||',
+        'AND',
+        'OR',
+        'XOR',
+    ];
 
     /**
      * List of allowed reserved keywords in conditions.
      *
      * @var array
      */
-    public static $ALLOWED_KEYWORDS = array(
+    public static $ALLOWED_KEYWORDS = [
         'ALL' => 1,
         'AND' => 1,
         'BETWEEN' => 1,
@@ -51,14 +57,14 @@ class Condition extends Component
         'REGEXP' => 1,
         'RLIKE' => 1,
         'XOR' => 1,
-    );
+    ];
 
     /**
      * Identifiers recognized.
      *
      * @var array
      */
-    public $identifiers = array();
+    public $identifiers = [];
 
     /**
      * Whether this component is an operator.
@@ -91,9 +97,9 @@ class Condition extends Component
      *
      * @return Condition[]
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
-        $ret = array();
+        $ret = [];
 
         $expr = new self();
 
@@ -148,7 +154,7 @@ class Condition extends Component
                 } else {
                     // The expression ended.
                     $expr->expr = trim($expr->expr);
-                    if (!empty($expr->expr)) {
+                    if (! empty($expr->expr)) {
                         $ret[] = $expr;
                     }
 
@@ -165,7 +171,7 @@ class Condition extends Component
 
             if (($token->type === Token::TYPE_KEYWORD)
                 && ($token->flags & Token::FLAG_KEYWORD_RESERVED)
-                && !($token->flags & Token::FLAG_KEYWORD_FUNCTION)
+                && ! ($token->flags & Token::FLAG_KEYWORD_FUNCTION)
             ) {
                 if ($token->value === 'BETWEEN') {
                     $betweenBefore = true;
@@ -189,11 +195,11 @@ class Condition extends Component
             $expr->expr .= $token->token;
             if (($token->type === Token::TYPE_NONE)
                 || (($token->type === Token::TYPE_KEYWORD)
-                && (!($token->flags & Token::FLAG_KEYWORD_RESERVED)))
+                && (! ($token->flags & Token::FLAG_KEYWORD_RESERVED)))
                 || ($token->type === Token::TYPE_STRING)
                 || ($token->type === Token::TYPE_SYMBOL)
             ) {
-                if (!in_array($token->value, $expr->identifiers)) {
+                if (! in_array($token->value, $expr->identifiers)) {
                     $expr->identifiers[] = $token->value;
                 }
             }
@@ -201,7 +207,7 @@ class Condition extends Component
 
         // Last iteration was not processed.
         $expr->expr = trim($expr->expr);
-        if (!empty($expr->expr)) {
+        if (! empty($expr->expr)) {
             $ret[] = $expr;
         }
 
@@ -216,7 +222,7 @@ class Condition extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         if (is_array($component)) {
             return implode(' ', $component);
diff --git a/src/Components/CreateDefinition.php b/src/Components/CreateDefinition.php
index 21ddae9..ccf8497 100644
--- a/src/Components/CreateDefinition.php
+++ b/src/Components/CreateDefinition.php
@@ -30,30 +30,53 @@ class CreateDefinition extends Component
      *
      * @var array
      */
-    public static $FIELD_OPTIONS = array(
+    public static $FIELD_OPTIONS = [
         // Tells the `OptionsArray` to not sort the options.
         // See the note below.
         '_UNSORTED' => true,
 
         'NOT NULL' => 1,
         'NULL' => 1,
-        'DEFAULT' => array(2, 'expr', array('breakOnAlias' => true)),
+        'DEFAULT' => [
+            2,
+            'expr',
+            ['breakOnAlias' => true],
+        ],
         /* Following are not according to grammar, but MySQL happily accepts
          * these at any location */
-        'CHARSET' => array(2, 'var'),
-        'COLLATE' => array(3, 'var'),
+        'CHARSET' => [
+            2,
+            'var',
+        ],
+        'COLLATE' => [
+            3,
+            'var',
+        ],
         'AUTO_INCREMENT' => 3,
         'PRIMARY' => 4,
         'PRIMARY KEY' => 4,
         'UNIQUE' => 4,
         'UNIQUE KEY' => 4,
-        'COMMENT' => array(5, 'var'),
-        'COLUMN_FORMAT' => array(6, 'var'),
-        'ON UPDATE' => array(7, 'expr'),
+        'COMMENT' => [
+            5,
+            'var',
+        ],
+        'COLUMN_FORMAT' => [
+            6,
+            'var',
+        ],
+        'ON UPDATE' => [
+            7,
+            'expr',
+        ],
 
         // Generated columns options.
         'GENERATED ALWAYS' => 8,
-        'AS' => array(9, 'expr', array('parenthesesDelimited' => true)),
+        'AS' => [
+            9,
+            'expr',
+            ['parenthesesDelimited' => true],
+        ],
         'VIRTUAL' => 10,
         'PERSISTENT' => 11,
         'STORED' => 11,
@@ -71,7 +94,7 @@ class CreateDefinition extends Component
         // 'NULL'                          => 1,
         // 'PRIMARY'                       => 4,
         // 'PRIMARY KEY'                   => 4,
-    );
+    ];
 
     /**
      * The name of the new column.
@@ -149,9 +172,9 @@ class CreateDefinition extends Component
      *
      * @return CreateDefinition[]
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
-        $ret = array();
+        $ret = [];
 
         $expr = new self();
 
@@ -216,7 +239,7 @@ class CreateDefinition extends Component
                     $state = 4;
                 } elseif ($token->type === Token::TYPE_SYMBOL || $token->type === Token::TYPE_NONE) {
                     $expr->name = $token->value;
-                    if (!$expr->isConstraint) {
+                    if (! $expr->isConstraint) {
                         $state = 2;
                     }
                 } elseif ($token->type === Token::TYPE_KEYWORD) {
@@ -259,7 +282,7 @@ class CreateDefinition extends Component
                 }
                 $state = 5;
             } elseif ($state === 5) {
-                if (!empty($expr->type) || !empty($expr->key)) {
+                if (! empty($expr->type) || ! empty($expr->key)) {
                     $ret[] = $expr;
                 }
                 $expr = new self();
@@ -281,7 +304,7 @@ class CreateDefinition extends Component
         }
 
         // Last iteration was not saved.
-        if (!empty($expr->type) || !empty($expr->key)) {
+        if (! empty($expr->type) || ! empty($expr->key)) {
             $ret[] = $expr;
         }
 
@@ -303,7 +326,7 @@ class CreateDefinition extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         if (is_array($component)) {
             return "(\n  " . implode(",\n  ", $component) . "\n)";
@@ -319,18 +342,18 @@ class CreateDefinition extends Component
             $tmp .= Context::escape($component->name) . ' ';
         }
 
-        if (!empty($component->type)) {
+        if (! empty($component->type)) {
             $tmp .= DataType::build(
                 $component->type,
-                array('lowercase' => true)
+                ['lowercase' => true]
             ) . ' ';
         }
 
-        if (!empty($component->key)) {
+        if (! empty($component->key)) {
             $tmp .= $component->key . ' ';
         }
 
-        if (!empty($component->references)) {
+        if (! empty($component->references)) {
             $tmp .= 'REFERENCES ' . $component->references . ' ';
         }
 
diff --git a/src/Components/DataType.php b/src/Components/DataType.php
index 51f04fa..47fffba 100644
--- a/src/Components/DataType.php
+++ b/src/Components/DataType.php
@@ -25,14 +25,23 @@ class DataType extends Component
      *
      * @var array
      */
-    public static $DATA_TYPE_OPTIONS = array(
+    public static $DATA_TYPE_OPTIONS = [
         'BINARY' => 1,
-        'CHARACTER SET' => array(2, 'var'),
-        'CHARSET' => array(2, 'var'),
-        'COLLATE' => array(3, 'var'),
+        'CHARACTER SET' => [
+            2,
+            'var',
+        ],
+        'CHARSET' => [
+            2,
+            'var',
+        ],
+        'COLLATE' => [
+            3,
+            'var',
+        ],
         'UNSIGNED' => 4,
         'ZEROFILL' => 5,
-    );
+    ];
 
     /**
      * The name of the data type.
@@ -54,7 +63,7 @@ class DataType extends Component
      *
      * @var array
      */
-    public $parameters = array();
+    public $parameters = [];
 
     /**
      * The options of this data type.
@@ -72,7 +81,7 @@ class DataType extends Component
      */
     public function __construct(
         $name = null,
-        array $parameters = array(),
+        array $parameters = [],
         $options = null
     ) {
         $this->name = $name;
@@ -87,7 +96,7 @@ class DataType extends Component
      *
      * @return DataType
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
         $ret = new self();
 
@@ -119,7 +128,7 @@ class DataType extends Component
 
             if ($state === 0) {
                 $ret->name = strtoupper($token->value);
-                if (($token->type !== Token::TYPE_KEYWORD) || (!($token->flags & Token::FLAG_KEYWORD_DATA_TYPE))) {
+                if (($token->type !== Token::TYPE_KEYWORD) || (! ($token->flags & Token::FLAG_KEYWORD_DATA_TYPE))) {
                     $parser->error('Unrecognized data type.', $token);
                 }
                 $state = 1;
@@ -151,13 +160,13 @@ class DataType extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         $name = empty($options['lowercase']) ?
             $component->name : strtolower($component->name);
 
         $parameters = '';
-        if (!empty($component->parameters)) {
+        if (! empty($component->parameters)) {
             $parameters = '(' . implode(',', $component->parameters) . ')';
         }
 
diff --git a/src/Components/Expression.php b/src/Components/Expression.php
index 5350e36..7383275 100644
--- a/src/Components/Expression.php
+++ b/src/Components/Expression.php
@@ -28,10 +28,19 @@ class Expression extends Component
      *
      * @var array
      */
-    private static $ALLOWED_KEYWORDS = array(
-        'AS' => 1, 'DUAL' => 1, 'NULL' => 1, 'REGEXP' => 1, 'CASE' => 1,
-        'DIV' => 1, 'AND' => 1, 'OR' => 1, 'XOR' => 1, 'NOT' => 1, 'MOD' => 1,
-    );
+    private static $ALLOWED_KEYWORDS = [
+        'AS' => 1,
+        'DUAL' => 1,
+        'NULL' => 1,
+        'REGEXP' => 1,
+        'CASE' => 1,
+        'DIV' => 1,
+        'AND' => 1,
+        'OR' => 1,
+        'XOR' => 1,
+        'NOT' => 1,
+        'MOD' => 1,
+    ];
 
     /**
      * The name of this database.
@@ -146,7 +155,7 @@ class Expression extends Component
      *
      * @return Expression
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
         $ret = new self();
 
@@ -183,10 +192,13 @@ class Expression extends Component
          *
          * @var Token[]
          */
-        $prev = array(null, null);
+        $prev = [
+            null,
+            null,
+        ];
 
         // When a field is parsed, no parentheses are expected.
-        if (!empty($options['parseField'])) {
+        if (! empty($options['parseField'])) {
             $options['breakOnParentheses'] = true;
             $options['field'] = $options['parseField'];
         }
@@ -216,14 +228,14 @@ class Expression extends Component
 
             if ($token->type === Token::TYPE_KEYWORD) {
                 if (($brackets > 0) && empty($ret->subquery)
-                    && !empty(Parser::$STATEMENT_PARSERS[$token->keyword])
+                    && ! empty(Parser::$STATEMENT_PARSERS[$token->keyword])
                 ) {
                     // A `(` was previously found and this keyword is the
                     // beginning of a statement, so this is a subquery.
                     $ret->subquery = $token->keyword;
                 } elseif (($token->flags & Token::FLAG_KEYWORD_FUNCTION)
                     && (empty($options['parseField'])
-                    && !$alias)
+                    && ! $alias)
                 ) {
                     $isExpr = true;
                 } elseif (($token->flags & Token::FLAG_KEYWORD_RESERVED)
@@ -236,7 +248,7 @@ class Expression extends Component
                         break;
                     }
                     if ($token->keyword === 'AS') {
-                        if (!empty($options['breakOnAlias'])) {
+                        if (! empty($options['breakOnAlias'])) {
                             break;
                         }
                         if ($alias) {
@@ -257,7 +269,7 @@ class Expression extends Component
                         continue;
                     }
                     $isExpr = true;
-                } elseif ($brackets === 0 && strlen($ret->expr) > 0 && !$alias) {
+                } elseif ($brackets === 0 && strlen($ret->expr) > 0 && ! $alias) {
                     /* End of expression */
                     break;
                 }
@@ -272,7 +284,7 @@ class Expression extends Component
                 || (($token->type === Token::TYPE_OPERATOR)
                 && ($token->value !== '.'))
             ) {
-                if (!empty($options['parseField'])) {
+                if (! empty($options['parseField'])) {
                     break;
                 }
 
@@ -282,7 +294,7 @@ class Expression extends Component
             }
 
             if ($token->type === Token::TYPE_OPERATOR) {
-                if (!empty($options['breakOnParentheses'])
+                if (! empty($options['breakOnParentheses'])
                     && (($token->value === '(') || ($token->value === ')'))
                 ) {
                     // No brackets were expected.
@@ -305,7 +317,7 @@ class Expression extends Component
                     } else {
                         --$brackets;
                         if ($brackets === 0) {
-                            if (!empty($options['parenthesesDelimited'])) {
+                            if (! empty($options['parenthesesDelimited'])) {
                                 // The current token is the last bracket, the next
                                 // one will be outside the expression.
                                 $ret->expr .= $token->token;
@@ -332,7 +344,7 @@ class Expression extends Component
 
             if ($alias) {
                 // An alias is expected (the keyword `AS` was previously found).
-                if (!empty($ret->alias)) {
+                if (! empty($ret->alias)) {
                     $parser->error('An alias was previously found.', $token);
                     break;
                 }
@@ -345,13 +357,13 @@ class Expression extends Component
                     || ((($prev[0]->type !== Token::TYPE_OPERATOR)
                     || ($prev[0]->token === ')'))
                     && (($prev[0]->type !== Token::TYPE_KEYWORD)
-                    || (!($prev[0]->flags & Token::FLAG_KEYWORD_RESERVED)))))
+                    || (! ($prev[0]->flags & Token::FLAG_KEYWORD_RESERVED)))))
                     && (($prev[1]->type === Token::TYPE_STRING)
                     || (($prev[1]->type === Token::TYPE_SYMBOL)
-                    && (!($prev[1]->flags & Token::FLAG_SYMBOL_VARIABLE)))
+                    && (! ($prev[1]->flags & Token::FLAG_SYMBOL_VARIABLE)))
                     || ($prev[1]->type === Token::TYPE_NONE))
                 ) {
-                    if (!empty($ret->alias)) {
+                    if (! empty($ret->alias)) {
                         $parser->error('An alias was previously found.', $token);
                         break;
                     }
@@ -359,12 +371,12 @@ class Expression extends Component
                 } else {
                     $ret->expr .= $token->token;
                 }
-            } elseif (!$isExpr) {
+            } elseif (! $isExpr) {
                 if (($token->type === Token::TYPE_OPERATOR) && ($token->value === '.')) {
                     // Found a `.` which means we expect a column name and
                     // the column name we parsed is actually the table name
                     // and the table name is actually a database name.
-                    if (!empty($ret->database) || $dot) {
+                    if (! empty($ret->database) || $dot) {
                         $parser->error('Unexpected dot.', $token);
                     }
                     $ret->database = $ret->table;
@@ -380,10 +392,10 @@ class Expression extends Component
                         $dot = false;
                     } else {
                         // No alias is expected.
-                        if (!empty($options['breakOnAlias'])) {
+                        if (! empty($options['breakOnAlias'])) {
                             break;
                         }
-                        if (!empty($ret->alias)) {
+                        if (! empty($ret->alias)) {
                             $parser->error('An alias was previously found.', $token);
                             break;
                         }
@@ -418,16 +430,16 @@ class Expression extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         if (is_array($component)) {
             return implode($component, ', ');
         }
 
-        if ($component->expr !== '' && !is_null($component->expr)) {
+        if ($component->expr !== '' && ! is_null($component->expr)) {
             $ret = $component->expr;
         } else {
-            $fields = array();
+            $fields = [];
             if (isset($component->database) && ($component->database !== '')) {
                 $fields[] = $component->database;
             }
@@ -440,7 +452,7 @@ class Expression extends Component
             $ret = implode('.', Context::escape($fields));
         }
 
-        if (!empty($component->alias)) {
+        if (! empty($component->alias)) {
             $ret .= ' AS ' . Context::escape($component->alias);
         }
 
diff --git a/src/Components/ExpressionArray.php b/src/Components/ExpressionArray.php
index ab6988d..5d94681 100644
--- a/src/Components/ExpressionArray.php
+++ b/src/Components/ExpressionArray.php
@@ -27,9 +27,9 @@ class ExpressionArray extends Component
      *
      * @return Expression[]
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
-        $ret = array();
+        $ret = [];
 
         /**
          * The state of the parser.
@@ -115,9 +115,9 @@ class ExpressionArray extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
-        $ret = array();
+        $ret = [];
         foreach ($component as $frag) {
             $ret[] = $frag::build($frag);
         }
diff --git a/src/Components/FunctionCall.php b/src/Components/FunctionCall.php
index 8334676..067987f 100644
--- a/src/Components/FunctionCall.php
+++ b/src/Components/FunctionCall.php
@@ -57,7 +57,7 @@ class FunctionCall extends Component
      *
      * @return FunctionCall
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
         $ret = new self();
 
@@ -112,7 +112,7 @@ class FunctionCall extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         return $component->name . $component->parameters;
     }
diff --git a/src/Components/GroupKeyword.php b/src/Components/GroupKeyword.php
index 314201b..86de663 100644
--- a/src/Components/GroupKeyword.php
+++ b/src/Components/GroupKeyword.php
@@ -44,9 +44,9 @@ class GroupKeyword extends Component
      *
      * @return GroupKeyword[]
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
-        $ret = array();
+        $ret = [];
 
         $expr = new self();
 
@@ -93,7 +93,7 @@ class GroupKeyword extends Component
                 } elseif (($token->type === Token::TYPE_OPERATOR)
                     && ($token->value === ',')
                 ) {
-                    if (!empty($expr->expr)) {
+                    if (! empty($expr->expr)) {
                         $ret[] = $expr;
                     }
                     $expr = new self();
@@ -105,7 +105,7 @@ class GroupKeyword extends Component
         }
 
         // Last iteration was not processed.
-        if (!empty($expr->expr)) {
+        if (! empty($expr->expr)) {
             $ret[] = $expr;
         }
 
@@ -120,7 +120,7 @@ class GroupKeyword extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         if (is_array($component)) {
             return implode(', ', $component);
diff --git a/src/Components/IndexHint.php b/src/Components/IndexHint.php
index 9534d2d..12edda7 100644
--- a/src/Components/IndexHint.php
+++ b/src/Components/IndexHint.php
@@ -44,9 +44,9 @@ class IndexHint extends Component
     /**
      * List of indexes in this hint
      *
-     *  @var array
+     * @var array
      */
-    public $indexes = array();
+    public $indexes = [];
 
     /**
      * Constructor.
@@ -56,7 +56,7 @@ class IndexHint extends Component
      * @param string $for        the clause for which this hint is (JOIN/ORDER BY/GROUP BY)
      * @param string $indexes    List of indexes in this hint
      */
-    public function __construct(string $type = null, string $indexOrKey = null, string $for = null, array $indexes = array())
+    public function __construct(string $type = null, string $indexOrKey = null, string $for = null, array $indexes = [])
     {
         $this->type = $type;
         $this->indexOrKey = $indexOrKey;
@@ -71,9 +71,9 @@ class IndexHint extends Component
      *
      * @return IndexHint|Component[]
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
-        $ret = array();
+        $ret = [];
         $expr = new self();
         $expr->type = isset($options['type']) ? $options['type'] : null;
         /**
@@ -178,7 +178,7 @@ class IndexHint extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         if (is_array($component)) {
             return implode(' ', $component);
diff --git a/src/Components/IntoKeyword.php b/src/Components/IntoKeyword.php
index c0fa390..524d94c 100644
--- a/src/Components/IntoKeyword.php
+++ b/src/Components/IntoKeyword.php
@@ -25,22 +25,37 @@ class IntoKeyword extends Component
      *
      * @var array
      */
-    public static $FIELDS_OPTIONS = array(
-        'TERMINATED BY' => array(1, 'expr'),
+    public static $FIELDS_OPTIONS = [
+        'TERMINATED BY' => [
+            1,
+            'expr',
+        ],
         'OPTIONALLY' => 2,
-        'ENCLOSED BY' => array(3, 'expr'),
-        'ESCAPED BY' => array(4, 'expr'),
-    );
+        'ENCLOSED BY' => [
+            3,
+            'expr',
+        ],
+        'ESCAPED BY' => [
+            4,
+            'expr',
+        ],
+    ];
 
     /**
      * LINES Options for `SELECT...INTO` statements.
      *
      * @var array
      */
-    public static $LINES_OPTIONS = array(
-        'STARTING BY' => array(1, 'expr'),
-        'TERMINATED BY' => array(2, 'expr'),
-    );
+    public static $LINES_OPTIONS = [
+        'STARTING BY' => [
+            1,
+            'expr',
+        ],
+        'TERMINATED BY' => [
+            2,
+            'expr',
+        ],
+    ];
 
     /**
      * Type of target (OUTFILE or SYMBOL).
@@ -128,7 +143,7 @@ class IntoKeyword extends Component
      *
      * @return IntoKeyword
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
         $ret = new self();
 
@@ -188,10 +203,10 @@ class IntoKeyword extends Component
                     $ret->dest = Expression::parse(
                         $parser,
                         $list,
-                        array(
+                        [
                             'parseField' => 'table',
                             'breakOnAlias' => true,
-                        )
+                        ]
                     );
                 } else {
                     $ret->values = ExpressionArray::parse($parser, $list);
@@ -254,10 +269,10 @@ class IntoKeyword extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         if ($component->dest instanceof Expression) {
-            $columns = !empty($component->columns) ? '(`' . implode('`, `', $component->columns) . '`)' : '';
+            $columns = ! empty($component->columns) ? '(`' . implode('`, `', $component->columns) . '`)' : '';
 
             return $component->dest . $columns;
         } elseif (isset($component->values)) {
@@ -272,7 +287,7 @@ class IntoKeyword extends Component
             $ret .= ' ' . $fields_options_str;
         }
 
-        $lines_options_str = OptionsArray::build($component->lines_options, array('expr' => true));
+        $lines_options_str = OptionsArray::build($component->lines_options, ['expr' => true]);
         if (trim($lines_options_str) !== '') {
             $ret .= ' LINES ' . $lines_options_str;
         }
diff --git a/src/Components/JoinKeyword.php b/src/Components/JoinKeyword.php
index 786092d..6a13177 100644
--- a/src/Components/JoinKeyword.php
+++ b/src/Components/JoinKeyword.php
@@ -25,7 +25,7 @@ class JoinKeyword extends Component
      *
      * @var array
      */
-    public static $JOINS = array(
+    public static $JOINS = [
         'CROSS JOIN' => 'CROSS',
         'FULL JOIN' => 'FULL',
         'FULL OUTER JOIN' => 'FULL',
@@ -41,7 +41,7 @@ class JoinKeyword extends Component
         'NATURAL LEFT OUTER JOIN' => 'NATURAL LEFT OUTER',
         'NATURAL RIGHT OUTER JOIN' => 'NATURAL RIGHT OUTER',
         'STRAIGHT_JOIN' => 'STRAIGHT',
-    );
+    ];
 
     /**
      * Type of this join.
@@ -98,9 +98,9 @@ class JoinKeyword extends Component
      *
      * @return JoinKeyword[]
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
-        $ret = array();
+        $ret = [];
 
         $expr = new self();
 
@@ -151,7 +151,7 @@ class JoinKeyword extends Component
 
             if ($state === 0) {
                 if (($token->type === Token::TYPE_KEYWORD)
-                    && !empty(static::$JOINS[$token->keyword])
+                    && ! empty(static::$JOINS[$token->keyword])
                 ) {
                     $expr->type = static::$JOINS[$token->keyword];
                     $state = 1;
@@ -159,19 +159,19 @@ class JoinKeyword extends Component
                     break;
                 }
             } elseif ($state === 1) {
-                $expr->expr = Expression::parse($parser, $list, array('field' => 'table'));
+                $expr->expr = Expression::parse($parser, $list, ['field' => 'table']);
                 $state = 2;
             } elseif ($state === 2) {
                 if ($token->type === Token::TYPE_KEYWORD) {
-                    switch($token->keyword) {
+                    switch ($token->keyword) {
                         case 'ON':
                             $state = 3;
-                        break;
+                            break;
                         case 'USING':
                             $state = 4;
-                        break;
+                            break;
                         default:
-                            if (!empty(static::$JOINS[$token->keyword])
+                            if (! empty(static::$JOINS[$token->keyword])
                             ) {
                                 $ret[] = $expr;
                                 $expr = new self();
@@ -181,7 +181,7 @@ class JoinKeyword extends Component
                                 /* Next clause is starting */
                                 break 2;
                             }
-                        break;
+                            break;
                     }
                 }
             } elseif ($state === 3) {
@@ -197,7 +197,7 @@ class JoinKeyword extends Component
             }
         }
 
-        if (!empty($expr->type)) {
+        if (! empty($expr->type)) {
             $ret[] = $expr;
         }
 
@@ -212,14 +212,14 @@ class JoinKeyword extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
-        $ret = array();
+        $ret = [];
         foreach ($component as $c) {
             $ret[] = array_search($c->type, static::$JOINS) . ' ' . $c->expr
-                . (!empty($c->on)
+                . (! empty($c->on)
                     ? ' ON ' . Condition::build($c->on) : '')
-                . (!empty($c->using)
+                . (! empty($c->using)
                     ? ' USING ' . ArrayObj::build($c->using) : '');
         }
 
diff --git a/src/Components/Key.php b/src/Components/Key.php
index bd3bbd1..3093f01 100644
--- a/src/Components/Key.php
+++ b/src/Components/Key.php
@@ -28,12 +28,24 @@ class Key extends Component
      *
      * @var array
      */
-    public static $KEY_OPTIONS = array(
-        'KEY_BLOCK_SIZE' => array(1, 'var'),
-        'USING' => array(2, 'var'),
-        'WITH PARSER' => array(3, 'var'),
-        'COMMENT' => array(4, 'var='),
-    );
+    public static $KEY_OPTIONS = [
+        'KEY_BLOCK_SIZE' => [
+            1,
+            'var',
+        ],
+        'USING' => [
+            2,
+            'var',
+        ],
+        'WITH PARSER' => [
+            3,
+            'var',
+        ],
+        'COMMENT' => [
+            4,
+            'var=',
+        ],
+    ];
 
     /**
      * The name of this key.
@@ -73,7 +85,7 @@ class Key extends Component
      */
     public function __construct(
         $name = null,
-        array $columns = array(),
+        array $columns = [],
         $type = null,
         $options = null
     ) {
@@ -90,7 +102,7 @@ class Key extends Component
      *
      * @return Key
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
         $ret = new self();
 
@@ -99,7 +111,7 @@ class Key extends Component
          *
          * @var array
          */
-        $lastColumn = array();
+        $lastColumn = [];
 
         /**
          * The state of the parser.
@@ -150,9 +162,9 @@ class Key extends Component
                         $state = 3;
                     } elseif (($token->value === ',') || ($token->value === ')')) {
                         $state = ($token->value === ',') ? 2 : 4;
-                        if (!empty($lastColumn)) {
+                        if (! empty($lastColumn)) {
                             $ret->columns[] = $lastColumn;
-                            $lastColumn = array();
+                            $lastColumn = [];
                         }
                     }
                 } else {
@@ -182,14 +194,14 @@ class Key extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         $ret = $component->type . ' ';
-        if (!empty($component->name)) {
+        if (! empty($component->name)) {
             $ret .= Context::escape($component->name) . ' ';
         }
 
-        $columns = array();
+        $columns = [];
         foreach ($component->columns as $column) {
             $tmp = Context::escape($column['name']);
             if (isset($column['length'])) {
diff --git a/src/Components/Limit.php b/src/Components/Limit.php
index 17423e2..d02ce49 100644
--- a/src/Components/Limit.php
+++ b/src/Components/Limit.php
@@ -53,7 +53,7 @@ class Limit extends Component
      *
      * @return Limit
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
         $ret = new self();
 
@@ -121,7 +121,7 @@ class Limit extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         return $component->offset . ', ' . $component->rowCount;
     }
diff --git a/src/Components/LockExpression.php b/src/Components/LockExpression.php
index 644e3ca..7cbfa72 100644
--- a/src/Components/LockExpression.php
+++ b/src/Components/LockExpression.php
@@ -35,13 +35,13 @@ class LockExpression extends Component
     public $type;
 
     /**
-     * @param Parser     $parser the parser that serves as context
-     * @param TokensList $list   the list of tokens that are being parsed
+     * @param Parser     $parser  the parser that serves as context
+     * @param TokensList $list    the list of tokens that are being parsed
      * @param array      $options parameters for parsing
      *
      * @return CaseExpression
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
         $ret = new self();
 
@@ -77,7 +77,7 @@ class LockExpression extends Component
             }
 
             if ($state === 0) {
-                $ret->table = Expression::parse($parser, $list, array('parseField' => 'table'));
+                $ret->table = Expression::parse($parser, $list, ['parseField' => 'table']);
                 $state = 1;
             } elseif ($state === 1) {
                 // parse lock type
@@ -103,7 +103,7 @@ class LockExpression extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         if (is_array($component)) {
             return implode(', ', $component);
@@ -112,7 +112,8 @@ class LockExpression extends Component
         return $component->table . ' ' . $component->type;
     }
 
-    private static function parseLockType(Parser $parser, TokensList $list) {
+    private static function parseLockType(Parser $parser, TokensList $list)
+    {
         $lockType = '';
 
         /**
diff --git a/src/Components/OptionsArray.php b/src/Components/OptionsArray.php
index fd02d22..2b17cdd 100644
--- a/src/Components/OptionsArray.php
+++ b/src/Components/OptionsArray.php
@@ -26,7 +26,7 @@ class OptionsArray extends Component
      *
      * @var array
      */
-    public $options = array();
+    public $options = [];
 
     /**
      * Constructor.
@@ -35,7 +35,7 @@ class OptionsArray extends Component
      *                       must be an array with at least two keys `name` and
      *                       `expr` or `value`.
      */
-    public function __construct(array $options = array())
+    public function __construct(array $options = [])
     {
         $this->options = $options;
     }
@@ -47,7 +47,7 @@ class OptionsArray extends Component
      *
      * @return OptionsArray
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
         $ret = new self();
 
@@ -156,7 +156,7 @@ class OptionsArray extends Component
             }
 
             if ($state === 0) {
-                if (!is_array($lastOption)) {
+                if (! is_array($lastOption)) {
                     // This is a just keyword option without any value.
                     // This is the beginning and the end of it.
                     $ret->options[$lastOptionId] = $token->value;
@@ -167,7 +167,7 @@ class OptionsArray extends Component
                     // This is only the beginning. The value is parsed in state
                     // 1 and 2. State 1 is used to skip the first equals sign
                     // and state 2 to parse the actual value.
-                    $ret->options[$lastOptionId] = array(
+                    $ret->options[$lastOptionId] = [
                         // @var string The name of the option.
                         'name' => $token->value,
                         // @var bool Whether it contains an equal sign.
@@ -177,7 +177,7 @@ class OptionsArray extends Component
                         'expr' => '',
                         // @var string Processed value.
                         'value' => '',
-                    );
+                    ];
                     $state = 1;
                 } elseif ($lastOption[1] === 'expr' || $lastOption[1] === 'expr=') {
                     // This is a keyword that is followed by an expression.
@@ -185,7 +185,7 @@ class OptionsArray extends Component
 
                     // Skipping this option in order to parse the expression.
                     ++$list->idx;
-                    $ret->options[$lastOptionId] = array(
+                    $ret->options[$lastOptionId] = [
                         // @var string The name of the option.
                         'name' => $token->value,
                         // @var bool Whether it contains an equal sign.
@@ -193,7 +193,7 @@ class OptionsArray extends Component
                         'equals' => $lastOption[1] === 'expr=',
                         // @var Expression The parsed expression.
                         'expr' => '',
-                    );
+                    ];
                     $state = 1;
                 }
             } elseif ($state === 1) {
@@ -211,7 +211,7 @@ class OptionsArray extends Component
                     $ret->options[$lastOptionId]['expr'] = Expression::parse(
                         $parser,
                         $list,
-                        empty($lastOption[2]) ? array() : $lastOption[2]
+                        empty($lastOption[2]) ? [] : $lastOption[2]
                     );
                     $ret->options[$lastOptionId]['value']
                         = $ret->options[$lastOptionId]['expr']->expr;
@@ -226,7 +226,7 @@ class OptionsArray extends Component
 
                     $ret->options[$lastOptionId]['expr'] .= $token->token;
 
-                    if (!((($token->token === '(') && ($brackets === 1))
+                    if (! ((($token->token === '(') && ($brackets === 1))
                         || (($token->token === ')') && ($brackets === 0)))
                     ) {
                         // First pair of brackets is being skipped.
@@ -276,20 +276,20 @@ class OptionsArray extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         if (empty($component->options)) {
             return '';
         }
 
-        $options = array();
+        $options = [];
         foreach ($component->options as $option) {
-            if (!is_array($option)) {
+            if (! is_array($option)) {
                 $options[] = $option;
             } else {
                 $options[] = $option['name']
-                    . ((!empty($option['equals']) && $option['equals']) ? '=' : ' ')
-                    . (!empty($option['expr']) ? $option['expr'] : $option['value']);
+                    . ((! empty($option['equals']) && $option['equals']) ? '=' : ' ')
+                    . (! empty($option['expr']) ? $option['expr'] : $option['value']);
             }
         }
 
@@ -309,10 +309,10 @@ class OptionsArray extends Component
     {
         foreach ($this->options as $option) {
             if (is_array($option)) {
-                if (!strcasecmp($key, $option['name'])) {
+                if (! strcasecmp($key, $option['name'])) {
                     return $getExpr ? $option['expr'] : $option['value'];
                 }
-            } elseif (!strcasecmp($key, $option)) {
+            } elseif (! strcasecmp($key, $option)) {
                 return true;
             }
         }
@@ -331,12 +331,12 @@ class OptionsArray extends Component
     {
         foreach ($this->options as $idx => $option) {
             if (is_array($option)) {
-                if (!strcasecmp($key, $option['name'])) {
+                if (! strcasecmp($key, $option['name'])) {
                     unset($this->options[$idx]);
 
                     return true;
                 }
-            } elseif (!strcasecmp($key, $option)) {
+            } elseif (! strcasecmp($key, $option)) {
                 unset($this->options[$idx]);
 
                 return true;
diff --git a/src/Components/OrderKeyword.php b/src/Components/OrderKeyword.php
index 77d5a3d..f6d60eb 100644
--- a/src/Components/OrderKeyword.php
+++ b/src/Components/OrderKeyword.php
@@ -53,9 +53,9 @@ class OrderKeyword extends Component
      *
      * @return OrderKeyword[]
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
-        $ret = array();
+        $ret = [];
 
         $expr = new self();
 
@@ -102,7 +102,7 @@ class OrderKeyword extends Component
                 } elseif (($token->type === Token::TYPE_OPERATOR)
                     && ($token->value === ',')
                 ) {
-                    if (!empty($expr->expr)) {
+                    if (! empty($expr->expr)) {
                         $ret[] = $expr;
                     }
                     $expr = new self();
@@ -114,7 +114,7 @@ class OrderKeyword extends Component
         }
 
         // Last iteration was not processed.
-        if (!empty($expr->expr)) {
+        if (! empty($expr->expr)) {
             $ret[] = $expr;
         }
 
@@ -129,7 +129,7 @@ class OrderKeyword extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         if (is_array($component)) {
             return implode(', ', $component);
diff --git a/src/Components/ParameterDefinition.php b/src/Components/ParameterDefinition.php
index 1f810f5..f45d6ac 100644
--- a/src/Components/ParameterDefinition.php
+++ b/src/Components/ParameterDefinition.php
@@ -63,9 +63,9 @@ class ParameterDefinition extends Component
      *
      * @return ParameterDefinition[]
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
-        $ret = array();
+        $ret = [];
 
         $expr = new self();
 
@@ -153,14 +153,14 @@ class ParameterDefinition extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         if (is_array($component)) {
             return '(' . implode(', ', $component) . ')';
         }
 
         $tmp = '';
-        if (!empty($component->inOut)) {
+        if (! empty($component->inOut)) {
             $tmp .= $component->inOut . ' ';
         }
 
diff --git a/src/Components/PartitionDefinition.php b/src/Components/PartitionDefinition.php
index 2fc769e..03f4aa6 100644
--- a/src/Components/PartitionDefinition.php
+++ b/src/Components/PartitionDefinition.php
@@ -29,17 +29,44 @@ class PartitionDefinition extends Component
      *
      * @var array
      */
-    public static $OPTIONS = array(
-        'STORAGE ENGINE' => array(1, 'var'),
-        'ENGINE' => array(1, 'var'),
-        'COMMENT' => array(2, 'var'),
-        'DATA DIRECTORY' => array(3, 'var'),
-        'INDEX DIRECTORY' => array(4, 'var'),
-        'MAX_ROWS' => array(5, 'var'),
-        'MIN_ROWS' => array(6, 'var'),
-        'TABLESPACE' => array(7, 'var'),
-        'NODEGROUP' => array(8, 'var'),
-    );
+    public static $OPTIONS = [
+        'STORAGE ENGINE' => [
+            1,
+            'var',
+        ],
+        'ENGINE' => [
+            1,
+            'var',
+        ],
+        'COMMENT' => [
+            2,
+            'var',
+        ],
+        'DATA DIRECTORY' => [
+            3,
+            'var',
+        ],
+        'INDEX DIRECTORY' => [
+            4,
+            'var',
+        ],
+        'MAX_ROWS' => [
+            5,
+            'var',
+        ],
+        'MIN_ROWS' => [
+            6,
+            'var',
+        ],
+        'TABLESPACE' => [
+            7,
+            'var',
+        ],
+        'NODEGROUP' => [
+            8,
+            'var',
+        ],
+    ];
 
     /**
      * Whether this entry is a subpartition or a partition.
@@ -90,7 +117,7 @@ class PartitionDefinition extends Component
      *
      * @return PartitionDefinition
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
         $ret = new self();
 
@@ -163,10 +190,10 @@ class PartitionDefinition extends Component
                     $ret->expr = Expression::parse(
                         $parser,
                         $list,
-                        array(
+                        [
                             'parenthesesDelimited' => true,
                             'breakOnAlias' => true,
-                        )
+                        ]
                     );
                 }
                 $state = 5;
@@ -178,9 +205,9 @@ class PartitionDefinition extends Component
                     $ret->subpartitions = ArrayObj::parse(
                         $parser,
                         $list,
-                        array(
+                        [
                             'type' => 'PhpMyAdmin\\SqlParser\\Components\\PartitionDefinition',
-                        )
+                        ]
                     );
                     ++$list->idx;
                 }
@@ -199,7 +226,7 @@ class PartitionDefinition extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         if (is_array($component)) {
             return "(\n" . implode(",\n", $component) . "\n)";
@@ -214,7 +241,7 @@ class PartitionDefinition extends Component
         return trim(
             'PARTITION ' . $component->name
             . (empty($component->type) ? '' : ' VALUES ' . $component->type . ' ' . $component->expr . ' ')
-            . ((!empty($component->options) && !empty($component->type)) ? '' : ' ') . $component->options . $subpartitions
+            . ((! empty($component->options) && ! empty($component->type)) ? '' : ' ') . $component->options . $subpartitions
         );
     }
 }
diff --git a/src/Components/Reference.php b/src/Components/Reference.php
index 798eb68..3f8e453 100644
--- a/src/Components/Reference.php
+++ b/src/Components/Reference.php
@@ -26,11 +26,20 @@ class Reference extends Component
      *
      * @var array
      */
-    public static $REFERENCES_OPTIONS = array(
-        'MATCH' => array(1, 'var'),
-        'ON DELETE' => array(2, 'var'),
-        'ON UPDATE' => array(3, 'var'),
-    );
+    public static $REFERENCES_OPTIONS = [
+        'MATCH' => [
+            1,
+            'var',
+        ],
+        'ON DELETE' => [
+            2,
+            'var',
+        ],
+        'ON UPDATE' => [
+            3,
+            'var',
+        ],
+    ];
 
     /**
      * The referenced table.
@@ -60,7 +69,7 @@ class Reference extends Component
      * @param array        $columns the columns referenced
      * @param OptionsArray $options the options
      */
-    public function __construct($table = null, array $columns = array(), $options = null)
+    public function __construct($table = null, array $columns = [], $options = null)
     {
         $this->table = $table;
         $this->columns = $columns;
@@ -74,7 +83,7 @@ class Reference extends Component
      *
      * @return Reference
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
         $ret = new self();
 
@@ -115,10 +124,10 @@ class Reference extends Component
                 $ret->table = Expression::parse(
                     $parser,
                     $list,
-                    array(
+                    [
                         'parseField' => 'table',
                         'breakOnAlias' => true,
-                    )
+                    ]
                 );
                 $state = 1;
             } elseif ($state === 1) {
@@ -142,7 +151,7 @@ class Reference extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         return trim(
             $component->table
diff --git a/src/Components/RenameOperation.php b/src/Components/RenameOperation.php
index e9bd9ce..4bdb67e 100644
--- a/src/Components/RenameOperation.php
+++ b/src/Components/RenameOperation.php
@@ -53,9 +53,9 @@ class RenameOperation extends Component
      *
      * @return RenameOperation[]
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
-        $ret = array();
+        $ret = [];
 
         $expr = new self();
 
@@ -99,10 +99,10 @@ class RenameOperation extends Component
                 $expr->old = Expression::parse(
                     $parser,
                     $list,
-                    array(
+                    [
                         'breakOnAlias' => true,
                         'parseField' => 'table',
-                    )
+                    ]
                 );
                 if (empty($expr->old)) {
                     $parser->error(
@@ -125,10 +125,10 @@ class RenameOperation extends Component
                 $expr->new = Expression::parse(
                     $parser,
                     $list,
-                    array(
+                    [
                         'breakOnAlias' => true,
                         'parseField' => 'table',
-                    )
+                    ]
                 );
                 if (empty($expr->new)) {
                     $parser->error(
@@ -156,7 +156,7 @@ class RenameOperation extends Component
         }
 
         // Last iteration was not saved.
-        if (!empty($expr->old)) {
+        if (! empty($expr->old)) {
             $ret[] = $expr;
         }
 
@@ -171,7 +171,7 @@ class RenameOperation extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         if (is_array($component)) {
             return implode(', ', $component);
diff --git a/src/Components/SetOperation.php b/src/Components/SetOperation.php
index 2945a8e..68f2297 100644
--- a/src/Components/SetOperation.php
+++ b/src/Components/SetOperation.php
@@ -53,9 +53,9 @@ class SetOperation extends Component
      *
      * @return SetOperation[]
      */
-    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
     {
-        $ret = array();
+        $ret = [];
 
         $expr = new self();
 
@@ -118,9 +118,9 @@ class SetOperation extends Component
                 $tmp = Expression::parse(
                     $parser,
                     $list,
-                    array(
+                    [
                         'breakOnAlias' => true,
-                    )
+                    ]
                 );
                 if (is_null($tmp)) {
                     $parser->error('Missing expression.', $token);
@@ -150,7 +150,7 @@ class SetOperation extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
         if (is_array($component)) {
             return implode(', ', $component);
diff --git a/src/Components/UnionKeyword.php b/src/Components/UnionKeyword.php
index 2de5126..220f86e 100644
--- a/src/Components/UnionKeyword.php
+++ b/src/Components/UnionKeyword.php
@@ -23,9 +23,9 @@ class UnionKeyword extends Component
      *
      * @return string
      */
-    public static function build($component, array $options = array())
+    public static function build($component, array $options = [])
     {
-        $tmp = array();
+        $tmp = [];
         foreach ($component as $componentPart) {
             $tmp[] = $componentPart[0] . ' ' . $componentPart[1];
         }