Added missing partition definition.

Author: udan11

src/Components/PartitionDefinition.php

@@ -0,0 +1,181 @@
+<?php
+
+/**
+ * Parses the create definition of a partition.
+ *
+ * Used for parsing `CREATE TABLE` statement.
+ *
+ * @package    SqlParser
+ * @subpackage Components
+ */
+namespace SqlParser\Components;
+
+use SqlParser\Context;
+use SqlParser\Component;
+use SqlParser\Parser;
+use SqlParser\Token;
+use SqlParser\TokensList;
+
+/**
+ * Parses the create definition of a partition.
+ *
+ * Used for parsing `CREATE TABLE` statement.
+ *
+ * @category   Components
+ * @package    SqlParser
+ * @subpackage Components
+ * @author     Dan Ungureanu <[email protected]>
+ * @license    http://opensource.org/licenses/GPL-2.0 GNU Public License
+ */
+class PartitionDefinition extends Component
+{
+
+    /**
+     * All field options.
+     *
+     * @var array
+     */
+    public static $OPTIONS = array(
+        'STORAGE'                       => array(1, 'var'),
+        'STORAGE 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'),
+    );
+
+    /**
+     * Whether this entry is a subpartition or a partition.
+     *
+     * @var bool
+     */
+    public $isSubpartition;
+
+    /**
+     * The name of this partition.
+     *
+     * @var string
+     */
+    public $name;
+
+    /**
+     * The type of this partition (what follows the `VALUES` keyword).
+     *
+     * @var string
+     */
+    public $type;
+
+    /**
+     * The expression used to defined this partition.
+     *
+     * @var Expression
+     */
+    public $expr;
+
+    /**
+     * The subpartitions of this partition.
+     *
+     * @var PartitionDefinition[]
+     */
+    public $subpartitions;
+
+    /**
+     * The options of this field.
+     *
+     * @var OptionsArray
+     */
+    public $options;
+
+    /**
+     * @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 PartitionDefinition
+     */
+    public static function parse(Parser $parser, TokensList $list, array $options = array())
+    {
+        $ret = new PartitionDefinition();
+
+        /**
+         * The state of the parser.
+         *
+         * Below are the states of the parser.
+         *
+         *      0 -------------[ PARTITION | SUBPARTITION ]------------> 1
+         *
+         *      1 -----------------------[ name ]----------------------> 2
+         *
+         *      2 ----------------------[ VALUES ]---------------------> 3
+         *
+         *      3 ---------------------[ LESS THAN ]-------------------> 4
+         *      3 ------------------------[ IN ]-----------------------> 4
+         *
+         *      4 -----------------------[ expr ]----------------------> 5
+         *
+         *      5 ----------------------[ options ]--------------------> 6
+         *
+         *      6 ------------------[ subpartitions ]------------------> (END)
+         *
+         * @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) {
+                $ret->isSubpartition = ($token->type === Token::TYPE_KEYWORD) && ($token->value === 'SUBPARTITION');
+                $state = 1;
+            } elseif ($state === 1) {
+                $ret->name = $token->value;
+                $state = $ret->isSubpartition ? 5 : 2;
+            } elseif ($state === 2) {
+                $state = 3;
+            } elseif ($state === 3) {
+                $ret->type = $token->value;
+                $state = 4;
+            } elseif ($state === 4) {
+                $ret->expr = Expression::parse($parser, $list, array('noAlias' => true, 'bracketsDelimited' => true));
+                $state = 5;
+            } elseif ($state === 5) {
+                $ret->options = OptionsArray::parse($parser, $list, static::$OPTIONS);
+                $state = 6;
+            } elseif ($state === 6) {
+                if (($token->type === Token::TYPE_OPERATOR) && ($token->value === '(')) {
+                    $ret->subpartitions = ArrayObj::parse(
+                        $parser,
+                        $list,
+                        array(
+                            'type' => 'SqlParser\Components\PartitionDefinition'
+                        )
+                    );
+                } else {
+                    break;
+                }
+            }
+        }
+
+        --$list->idx;
+        return $ret;
+    }
+}