+ Add vendor of sqlparser.

2022-08-16 15:02:27 +08:00
parent b6dcbaa519
commit c8f3aec35b
979 changed files with 321906 additions and 0 deletions
@@ -0,0 +1,162 @@
+<?php
+/**
+ * `REFERENCES` keyword parser.
+ */
+
+declare(strict_types=1);
+
+namespace PhpMyAdmin\SqlParser\Components;
+
+use PhpMyAdmin\SqlParser\Component;
+use PhpMyAdmin\SqlParser\Context;
+use PhpMyAdmin\SqlParser\Parser;
+use PhpMyAdmin\SqlParser\Token;
+use PhpMyAdmin\SqlParser\TokensList;
+
+use function implode;
+use function trim;
+
+/**
+ * `REFERENCES` keyword parser.
+ *
+ * @final
+ */
+class Reference extends Component
+{
+    /**
+     * All references options.
+     *
+     * @var array
+     */
+    public static $REFERENCES_OPTIONS = [
+        'MATCH' => [
+            1,
+            'var',
+        ],
+        'ON DELETE' => [
+            2,
+            'var',
+        ],
+        'ON UPDATE' => [
+            3,
+            'var',
+        ],
+    ];
+
+    /**
+     * The referenced table.
+     *
+     * @var Expression
+     */
+    public $table;
+
+    /**
+     * The referenced columns.
+     *
+     * @var array
+     */
+    public $columns;
+
+    /**
+     * The options of the referencing.
+     *
+     * @var OptionsArray
+     */
+    public $options;
+
+    /**
+     * @param Expression   $table   the name of the table referenced
+     * @param array        $columns the columns referenced
+     * @param OptionsArray $options the options
+     */
+    public function __construct($table = null, array $columns = [], $options = null)
+    {
+        $this->table = $table;
+        $this->columns = $columns;
+        $this->options = $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 Reference
+     */
+    public static function parse(Parser $parser, TokensList $list, array $options = [])
+    {
+        $ret = new static();
+
+        /**
+         * The state of the parser.
+         *
+         * Below are the states of the parser.
+         *
+         *      0 ----------------------[ table ]---------------------> 1
+         *
+         *      1 ---------------------[ columns ]--------------------> 2
+         *
+         *      2 ---------------------[ options ]--------------------> (END)
+         *
+         * @var int
+         */
+        $state = 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) {
+                $ret->table = Expression::parse(
+                    $parser,
+                    $list,
+                    [
+                        'parseField' => 'table',
+                        'breakOnAlias' => true,
+                    ]
+                );
+                $state = 1;
+            } elseif ($state === 1) {
+                $ret->columns = ArrayObj::parse($parser, $list)->values;
+                $state = 2;
+            } elseif ($state === 2) {
+                $ret->options = OptionsArray::parse($parser, $list, static::$REFERENCES_OPTIONS);
+                ++$list->idx;
+                break;
+            }
+        }
+
+        --$list->idx;
+
+        return $ret;
+    }
+
+    /**
+     * @param Reference $component the component to be built
+     * @param array     $options   parameters for building
+     *
+     * @return string
+     */
+    public static function build($component, array $options = [])
+    {
+        return trim(
+            $component->table
+            . ' (' . implode(', ', Context::escape($component->columns)) . ') '
+            . $component->options
+        );
+    }
+}