Add support for LOCK and UNLOCK Statements

Signed-off-by: Deven Bansod <devenbansod.bits@gmail.com>

42 files changed, 568 insertions, 0 deletions

diff --git a/src/Components/LockExpression.php b/src/Components/LockExpression.php
new file mode 100644
index 0000000..644e3ca
--- /dev/null
+++ b/src/Components/LockExpression.php
@@ -0,0 +1,203 @@
+<?php
+
+/**
+ * Parses a reference to a LOCK expression.
+ */
+
+namespace PhpMyAdmin\SqlParser\Components;
+
+use PhpMyAdmin\SqlParser\Component;
+use PhpMyAdmin\SqlParser\Parser;
+use PhpMyAdmin\SqlParser\Token;
+use PhpMyAdmin\SqlParser\TokensList;
+
+/**
+ * Parses a reference to a LOCK expression.
+ *
+ * @category   Components
+ *
+ * @license    https://www.gnu.org/licenses/gpl-2.0.txt GPL-2.0+
+ */
+class LockExpression extends Component
+{
+    /**
+     * The table to be locked.
+     *
+     * @var Expression
+     */
+    public $table;
+
+    /**
+     * The type of lock to be applied.
+     *
+     * @var string
+     */
+    public $type;
+
+    /**
+     * @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())
+    {
+        $ret = new self();
+
+        /**
+         * The state of the parser.
+         *
+         * Below are the states of the parser.
+         *
+         *      0 ---------------- [ tbl_name ] -----------------> 1
+         *      1 ---------------- [ lock_type ] ----------------> 2
+         *      2 -------------------- [ , ] --------------------> break
+         *
+         * @var int
+         */
+        $state = 0;
+
+        $prevToken = null;
+
+        for (; $list->idx < $list->count; ++$list->idx) {
+            /**
+             * Token parsed at this moment.
+             *
+             * @var Token
+             */
+            $token = $list->tokens[$list->idx];
+
+            // End of statement.
+            if ($token->type === Token::TYPE_DELIMITER
+                || ($token->type === Token::TYPE_OPERATOR
+                && $token->value === ',')
+            ) {
+                break;
+            }
+
+            if ($state === 0) {
+                $ret->table = Expression::parse($parser, $list, array('parseField' => 'table'));
+                $state = 1;
+            } elseif ($state === 1) {
+                // parse lock type
+                $ret->type = self::parseLockType($parser, $list);
+                $state = 2;
+            }
+            $prevToken = $token;
+        }
+
+        // 2 is the only valid end state
+        if ($state !== 2) {
+            $parser->error('Unexpected end of LOCK expression.', $prevToken);
+        }
+
+        --$list->idx;
+
+        return $ret;
+    }
+
+    /**
+     * @param LockExpression|LockExpression[] $component the component to be built
+     * @param array                           $options   parameters for building
+     *
+     * @return string
+     */
+    public static function build($component, array $options = array())
+    {
+        if (is_array($component)) {
+            return implode(', ', $component);
+        }
+
+        return $component->table . ' ' . $component->type;
+    }
+
+    private static function parseLockType(Parser $parser, TokensList $list) {
+        $lockType = '';
+
+        /**
+         * The state of the parser while parsing for lock type.
+         *
+         * Below are the states of the parser.
+         *
+         *      0 ---------------- [ READ ] -----------------> 1
+         *      0 ------------- [ LOW_PRIORITY ] ------------> 2
+         *      0 ---------------- [ WRITE ] ----------------> 3
+         *      1 ---------------- [ LOCAL ] ----------------> 3
+         *      2 ---------------- [ WRITE ] ----------------> 3
+         *
+         * @var int
+         */
+        $state = 0;
+
+        $prevToken = null;
+
+        for (; $list->idx < $list->count; ++$list->idx) {
+            /**
+             * Token parsed at this moment.
+             *
+             * @var Token
+             */
+            $token = $list->tokens[$list->idx];
+
+            // End of statement.
+            if ($token->type === Token::TYPE_DELIMITER
+                || ($token->type === Token::TYPE_OPERATOR
+                && $token->value === ',')
+            ) {
+                --$list->idx;
+                break;
+            }
+
+            // Skipping whitespaces and comments.
+            if ($token->type === Token::TYPE_WHITESPACE || $token->type === Token::TYPE_COMMENT) {
+                continue;
+            }
+
+            // We only expect keywords
+            if ($token->type !== Token::TYPE_KEYWORD) {
+                $parser->error('Unexpected token.', $token);
+                break;
+            }
+
+            if ($state === 0) {
+                if ($token->keyword === 'READ') {
+                    $state = 1;
+                } elseif ($token->keyword === 'LOW_PRIORITY') {
+                    $state = 2;
+                } elseif ($token->keyword === 'WRITE') {
+                    $state = 3;
+                } else {
+                    $parser->error('Unexpected keyword.', $token);
+                    break;
+                }
+                $lockType .= $token->keyword;
+            } elseif ($state === 1) {
+                if ($token->keyword === 'LOCAL') {
+                    $lockType .= ' ' . $token->keyword;
+                    $state = 3;
+                } else {
+                    $parser->error('Unexpected keyword.', $token);
+                    break;
+                }
+            } elseif ($state === 2) {
+                if ($token->keyword === 'WRITE') {
+                    $lockType .= ' ' . $token->keyword;
+                    $state = 3; // parsing over
+                } else {
+                    $parser->error('Unexpected keyword.', $token);
+                    break;
+                }
+            }
+
+            $prevToken = $token;
+        }
+
+        // Only  two possible end states
+        if ($state !== 1 && $state !== 3) {
+            $parser->error('Unexpected end of Lock expression.', $prevToken);
+        }
+
+        return $lockType;
+    }
+}
diff --git a/src/Parser.php b/src/Parser.php
index 738872a..c4db416 100644
--- a/src/Parser.php
+++ b/src/Parser.php
@@ -88,6 +88,11 @@ class Parser extends Core
         'START TRANSACTION' => 'PhpMyAdmin\\SqlParser\\Statements\\TransactionStatement',
 
         'PURGE' => 'PhpMyAdmin\\SqlParser\\Statements\\PurgeStatement',
+
+        // Lock statements
+        // https://dev.mysql.com/doc/refman/5.7/en/lock-tables.html
+        'LOCK' => 'PhpMyAdmin\\SqlParser\\Statements\\LockStatement',
+        'UNLOCK' => 'PhpMyAdmin\\SqlParser\\Statements\\LockStatement',
     );
 
     /**
diff --git a/src/Statements/LockStatement.php b/src/Statements/LockStatement.php
new file mode 100644
index 0000000..2ba70c4
--- /dev/null
+++ b/src/Statements/LockStatement.php
@@ -0,0 +1,128 @@
+<?php
+
+/**
+ * `LOCK` statement.
+ */
+
+namespace PhpMyAdmin\SqlParser\Statements;
+
+use PhpMyAdmin\SqlParser\Components\LockExpression;
+use PhpMyAdmin\SqlParser\Parser;
+use PhpMyAdmin\SqlParser\Statement;
+use PhpMyAdmin\SqlParser\Token;
+use PhpMyAdmin\SqlParser\TokensList;
+
+/**
+ * `LOCK` statement.
+ *
+ * @category   Statements
+ *
+ * @license    https://www.gnu.org/licenses/gpl-2.0.txt GPL-2.0+
+ */
+class LockStatement extends Statement
+{
+    /**
+     * Tables with their Lock expressions.
+     *
+     * @var LockExpression[]
+     */
+    public $locked = array();
+
+    /**
+     * Whether it's a LOCK statement
+     * if false, it's an UNLOCK statement
+     */
+    public $isLock = true;
+
+    /**
+     * @param Parser     $parser the instance that requests parsing
+     * @param TokensList $list   the list of tokens to be parsed
+     */
+    public function parse(Parser $parser, TokensList $list)
+    {
+        if ($list->tokens[$list->idx]->value === 'UNLOCK') {
+            // this is in fact an UNLOCK statement
+            $this->isLock = false;
+        }
+        ++$list->idx; // Skipping `LOCK`.
+
+        /**
+         * The state of the parser.
+         *
+         * Below are the states of the parser.
+         *
+         *      0 ---------------- [ TABLES ] -----------------> 1
+         *      1 -------------- [ lock_expr ] ----------------> 2
+         *      2 ------------------ [ , ] --------------------> 1
+         *
+         * @var int
+         */
+        $state = 0;
+
+        /**
+         * Previous parsed token
+         */
+        $prevToken = null;
+
+        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 ($token->type === Token::TYPE_KEYWORD) {
+                    if ($token->keyword !== 'TABLES') {
+                        $parser->error('Unexpected keyword.', $token);
+                        break;
+                    }
+                    $state = 1;
+                    continue;
+                } else {
+                    $parser->error('Unexpected token.', $token);
+                    break;
+                }
+            } elseif ($state === 1) {
+                if (!$this->isLock) {
+                    // UNLOCK statement should not have any more tokens
+                    $parser->error('Unexpected token.', $token);
+                    break;
+                }
+                $this->locked[] = LockExpression::parse($parser, $list);
+                $state = 2;
+            } elseif ($state === 2) {
+                if ($token->value === ',') {
+                    // move over to parsing next lock expression
+                    $state = 1;
+                }
+            }
+
+            $prevToken = $token;
+        }
+
+        if ($state !== 2 && $prevToken != null) {
+            $parser->error('Unexpected end of LOCK statement.', $prevToken);
+        }
+    }
+
+    /**
+     * @return string
+     */
+    public function build()
+    {
+        return trim(($this->isLock ? 'LOCK' : 'UNLOCK')
+            . ' TABLES ' . LockExpression::build($this->locked));
+    }
+}
diff --git a/tests/Builder/LockStatementTest.php b/tests/Builder/LockStatementTest.php
new file mode 100644
index 0000000..b0b4d38
--- /dev/null
+++ b/tests/Builder/LockStatementTest.php
@@ -0,0 +1,68 @@
+<?php
+
+namespace PhpMyAdmin\SqlParser\Tests\Builder;
+
+use PhpMyAdmin\SqlParser\Parser;
+use PhpMyAdmin\SqlParser\Tests\TestCase;
+
+class LockStatementTest extends TestCase
+{
+    public function testBuilder()
+    {
+        /* Assertion 1 */
+        $query = 'LOCK TABLES table1 AS `t1` READ LOCAL';
+
+        $parser = new Parser($query);
+        $stmt = $parser->statements[0];
+
+        $this->assertEquals($query, $stmt->build());
+
+        /* Assertion 2 */
+        $query = 'LOCK TABLES table1 AS `t1` READ';
+
+        $parser = new Parser($query);
+        $stmt = $parser->statements[0];
+
+        $this->assertEquals($query, $stmt->build());
+
+        /* Assertion 3 */
+        $query = 'LOCK TABLES table1 AS `t1` LOW_PRIORITY WRITE';
+
+        $parser = new Parser($query);
+        $stmt = $parser->statements[0];
+
+        $this->assertEquals($query, $stmt->build());
+
+        /* Assertion 4 */
+        $query = 'LOCK TABLES table1 AS `t1` WRITE';
+
+        $parser = new Parser($query);
+        $stmt = $parser->statements[0];
+
+        $this->assertEquals($query, $stmt->build());
+
+        /* Assertion 5 */
+        $query = 'LOCK TABLES table1 AS `t1` READ LOCAL, table2 AS `t2` WRITE';
+
+        $parser = new Parser($query);
+        $stmt = $parser->statements[0];
+
+        $this->assertEquals($query, $stmt->build());
+
+        /* Assertion 6 */
+        $query = 'LOCK TABLES table1 READ LOCAL, table2 AS `t2` WRITE';
+
+        $parser = new Parser($query);
+        $stmt = $parser->statements[0];
+
+        $this->assertEquals($query, $stmt->build());
+
+        /* Assertion 7 */
+        $query = 'UNLOCK TABLES';
+
+        $parser = new Parser($query);
+        $stmt = $parser->statements[0];
+
+        $this->assertEquals($query, $stmt->build());
+    }
+}
diff --git a/tests/Components/LockExpressionTest.php b/tests/Components/LockExpressionTest.php
new file mode 100644
index 0000000..56654a6
--- /dev/null
+++ b/tests/Components/LockExpressionTest.php
@@ -0,0 +1,71 @@
+<?php
+
+namespace PhpMyAdmin\SqlParser\Tests\Components;
+
+use PhpMyAdmin\SqlParser\Components\LockExpression;
+use PhpMyAdmin\SqlParser\Parser;
+use PhpMyAdmin\SqlParser\Tests\TestCase;
+
+class LockExpressionTest extends TestCase
+{
+    public function testParse()
+    {
+        $component = LockExpression::parse(new Parser(), $this->getTokensList('table1 AS t1 READ LOCAL'));
+        $this->assertNotNull($component->table);
+        $this->assertEquals($component->table->table, 'table1');
+        $this->assertEquals($component->table->alias, 't1');
+        $this->assertEquals($component->type, 'READ LOCAL');
+    }
+
+    public function testParse2()
+    {
+        $component = LockExpression::parse(new Parser(), $this->getTokensList('table1 LOW_PRIORITY WRITE'));
+        $this->assertNotNull($component->table);
+        $this->assertEquals($component->table->table, 'table1');
+        $this->assertEquals($component->type, 'LOW_PRIORITY WRITE');
+    }
+
+    /**
+     * @dataProvider testParseErrProvider
+     *
+     * @param mixed $expr
+     * @param mixed $error
+     */
+    public function testParseErr($expr, $error)
+    {
+        $parser = new Parser();
+        LockExpression::parse($parser, $this->getTokensList($expr));
+        $errors = $this->getErrorsAsArray($parser);
+        $this->assertEquals($errors[0][0], $error);
+    }
+
+    public function testParseErrProvider()
+    {
+        return array(
+            array(
+                'table1 AS t1',
+                'Unexpected end of LOCK expression.',
+            ),
+            array(
+                'table1 AS t1 READ WRITE',
+                'Unexpected keyword.',
+            ),
+            array(
+                'table1 AS t1 READ 2',
+                'Unexpected token.',
+            ),
+        );
+    }
+
+    public function testBuild()
+    {
+        $component = array(
+            LockExpression::parse(new Parser(), $this->getTokensList('table1 AS t1 READ LOCAL')),
+            LockExpression::parse(new Parser(), $this->getTokensList('table2 LOW_PRIORITY WRITE')),
+        );
+        $this->assertEquals(
+            LockExpression::build($component),
+            'table1 AS `t1` READ LOCAL, table2 LOW_PRIORITY WRITE'
+        );
+    }
+}
diff --git a/tests/Parser/LockStatementTest.php b/tests/Parser/LockStatementTest.php
new file mode 100644
index 0000000..3458e0a
--- /dev/null
+++ b/tests/Parser/LockStatementTest.php
@@ -0,0 +1,41 @@
+<?php
+
+namespace PhpMyAdmin\SqlParser\Tests\Parser;
+
+use PhpMyAdmin\SqlParser\Tests\TestCase;
+
+class LockStatementTest extends TestCase
+{
+    /**
+     * @dataProvider testLockProvider
+     *
+     * @param mixed $test
+     */
+    public function testLock($test)
+    {
+        $this->runParserTest($test);
+    }
+
+    public function testLockProvider()
+    {
+        return array(
+            array('parser/parseLock1'),
+            array('parser/parseLock2'),
+            array('parser/parseLock3'),
+            array('parser/parseLock4'),
+            array('parser/parseLock5'),
+            array('parser/parseLockErr1'),
+            array('parser/parseLockErr2'),
+            array('parser/parseLockErr3'),
+            array('parser/parseLockErr4'),
+            array('parser/parseLockErr5'),
+            array('parser/parseLockErr6'),
+            array('parser/parseLockErr7'),
+            array('parser/parseLockErr8'),
+            array('parser/parseLockErr9'),
+            array('parser/parseLockErr10'),
+            array('parser/parseUnlock1'),
+            array('parser/parseUnlockErr1'),
+        );
+    }
+}
diff --git a/tests/data/parser/parseLock1.in b/tests/data/parser/parseLock1.in
new file mode 100644
index 0000000..cfed7a3
--- /dev/null
+++ b/tests/data/parser/parseLock1.in
@@ -0,0 +1 @@
+LOCK TABLES   table1 AS `t1` READ    LOCAL;
\ No newline at end of file
diff --git a/tests/data/parser/parseLock1.out b/tests/data/parser/parseLock1.out
new file mode 100644
index 0000000..678bd43
--- /dev/null
+++ b/tests/data/parser/parseLock1.out
@@ -0,0 +1 @@
+a:4:{s:5:"query";s:43:"LOCK TABLES   table1 AS `t1` READ    LOCAL;";s:5:"lexer";O:26:"PhpMyAdmin\SqlParser\Lexer":8:{s:3:"str";s:43:"LOCK TABLES   table1 AS `t1` READ    LOCAL;";s:3:"len";i:43;s:4:"last";i:43;s:4:"list";O:31:"PhpMyAdmin\SqlParser\TokensList":3:{s:6:"tokens";a:15:{i:0;O:26:"PhpMyAdmin\SqlParser\Token":6:{s:5:"token";s:4:"LOCK";s:5:"value";s:4:"LOCK";s:7:"keyword";s:4:"LOCK";s:4:"type";i:1;s:5:"flags";i:3;s:8:"position";i:0;}i:1;O:26:"PhpMyAdmin\SqlParser\Token":6:{s:5:"token";s:1:" ";s:5:"value";s:1:" ";s:7:"keyword";N;s:4:"type";i:3;s:5:"flags";i:0;s:8:"position";i:4;}i:2;O:26:"PhpMyAdmin\SqlParser\Token":6:{s:5:"token";s:6:"TABLES";s:5:"value";s:6:"TABLES";s:7:"keyword";s:6:"TABLES";s:4:"type";i:1;s:5:"flags";i:1;s:8:"position";i:5;}i:3;O:26:"PhpMyAdmin\SqlParser\Token":6:{s:5:"token";s:3:"   ";s:5:"value";s:1:" ";s:7:"keyword";N;s:4:"type";i:3;s:5:"flags";i:0;s:8:"position";i:11;}i:4;O:26:"PhpMyAdmin\SqlParser\Token":6:{s:5:"token";s:6:"table1";s:5:"value";s:6:"table1";s:7:"keyword";N;s:4:"type";i:0;s:5:"flags";i:0;s:8:"position";i:14;}i:5;O:26:"PhpMyAdmin\SqlParser\Token":6:{s:5:"token";s:1:" ";s:5:"value";s:1:" ";s:7:"keyword";N;s:4:"type";i:3;s:5:"flags";i:0;s:8:"position";i:20;}i:6;O:26:"PhpMyAdmin\SqlParser\Token":6:{s:5:"token";s:2:"AS";s:5:"value";s:2:"AS";s:7:"keyword";s:2:"AS";s:4:"type";i:1;s:5:"flags";i:3;s:8:"position";i:21;}i:7;O:26:"PhpMyAdmin\SqlParser\Token":6:{s:5:"token";s:1:" ";s:5:"value";s:1:" ";s:7:"keyword";N;s:4:"type";i:3;s:5:"flags";i:0;s:8:"position";i:23;}i:8;O:26:"PhpMyAdmin\SqlParser\Token":6:{s:5:"token";s:4:"`t1`";s:5:"value";s:2:"t1";s:7:"keyword";N;s:4:"type";i:8;s:5:"flags";i:2;s:8:"position";i:24;}i:9;O:26:"PhpMyAdmin\SqlParser\Token":6:{s:5:"token";s:1:" ";s:5:"value";s:1:" ";s:7:"keyword";N;s:4:"type";i:3;s:5:"flags";i:0;s:8:"position";i:28;}i:10;O:26:"PhpMyAdmin\SqlParser\Token":6:{s:5:"token";s:4:"READ";s:5:"value";s:4:"READ";s:7:"keyword";s:4:"READ";s:4:"type";i:1;s:5:"flags";i:3;s:8:"position";i:29;}i:11;O:26:"PhpMyAdmin\SqlParser\Token":6:{s:5:"token";s:4:"    ";s:5:"value";s:1:" ";s:7:"keyword";N;s:4:"type";i:3;s:5:"flags";i:0;s:8:"position";i:33;}i:12;O:26:"PhpMyAdmin\SqlParser\Token":6:{s:5:"token";s:5:"LOCAL";s:5:"value";s:5:"LOCAL";s:7:"keyword";s:5:"LOCAL";s:4:"type";i:1;s:5:"flags";i:1;s:8:"position";i:37;}i:13;O:26:"PhpMyAdmin\SqlParser\Token":6:{s:5:"token";s:1:";";s:5:"value";s:1:";";s:7:"keyword";N;s:4:"type";i:9;s:5:"flags";i:0;s:8:"position";i:42;}i:14;O:26:"PhpMyAdmin\SqlParser\Token":6:{s:5:"token";N;s:5:"value";N;s:7:"keyword";N;s:4:"type";i:9;s:5:"flags";i:0;s:8:"position";N;}}s:5:"count";i:15;s:3:"idx";i:15;}s:9:"delimiter";s:1:";";s:12:"delimiterLen";i:1;s:6:"strict";b:0;s:6:"errors";a:0:{}}s:6:"parser";O:27:"PhpMyAdmin\SqlParser\Parser":5:{s:4:"list";r:7;s:10:"statements";a:1:{i:0;O:45:"PhpMyAdmin\SqlParser\Statements\LockStatement":5:{s:6:"locked";a:1:{i:0;O:46:"PhpMyAdmin\SqlParser\Components\LockExpression":2:{s:5:"table";O:42:"PhpMyAdmin\SqlParser\Components\Expression":7:{s:8:"database";N;s:5:"table";s:6:"table1";s:6:"column";N;s:4:"expr";s:6:"table1";s:5:"alias";s:2:"t1";s:8:"function";N;s:8:"subquery";N;}s:4:"type";s:10:"READ LOCAL";}}s:6:"isLock";b:1;s:7:"options";N;s:5:"first";i:0;s:4:"last";i:13;}}s:8:"brackets";i:0;s:6:"strict";b:0;s:6:"errors";a:0:{}}s:6:"errors";a:2:{s:5:"lexer";a:0:{}s:6:"parser";a:0:{}}}
\ No newline at end of file
diff --git a/tests/data/parser/parseLock2.in b/tests/data/parser/parseLock2.in
new file mode 100644
index 0000000..8740746
--- /dev/null
+++ b/tests/data/parser/parseLock2.in
@@ -0,0 +1 @@
+LOCK TABLES table1 AS `t1` READ;
\ No newline at end of file
diff --git a/tests/data/parser/parseLock2.out b/tests/data/parser/parseLock2.out
new file mode 100644
index 0000000..f0fbdd9
--- /dev/null
+++ b/tests/data/parser/parseLock2.out
@@ -0,0 +1 @@
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diff --git a/tests/data/parser/parseLock3.in b/tests/data/parser/parseLock3.in
new file mode 100644
index 0000000..4d57f17
--- /dev/null
+++ b/tests/data/parser/parseLock3.in
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+LOCK TABLES table1 AS `t1` LOW_PRIORITY WRITE;
\ No newline at end of file
diff --git a/tests/data/parser/parseLock3.out b/tests/data/parser/parseLock3.out
new file mode 100644
index 0000000..d49f618
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diff --git a/tests/data/parser/parseLock4.in b/tests/data/parser/parseLock4.in
new file mode 100644
index 0000000..dd99683
--- /dev/null
+++ b/tests/data/parser/parseLock4.in
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diff --git a/tests/data/parser/parseLock4.out b/tests/data/parser/parseLock4.out
new file mode 100644
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diff --git a/tests/data/parser/parseLock5.in b/tests/data/parser/parseLock5.in
new file mode 100644
index 0000000..bc87291
--- /dev/null
+++ b/tests/data/parser/parseLock5.in
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\ No newline at end of file
diff --git a/tests/data/parser/parseLock5.out b/tests/data/parser/parseLock5.out
new file mode 100644
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diff --git a/tests/data/parser/parseLock6.in b/tests/data/parser/parseLock6.in
new file mode 100644
index 0000000..9f69346
--- /dev/null
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\ No newline at end of file
diff --git a/tests/data/parser/parseLock6.out b/tests/data/parser/parseLock6.out
new file mode 100644
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diff --git a/tests/data/parser/parseLockErr1.in b/tests/data/parser/parseLockErr1.in
new file mode 100644
index 0000000..7eed140
--- /dev/null
+++ b/tests/data/parser/parseLockErr1.in
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\ No newline at end of file
diff --git a/tests/data/parser/parseLockErr1.out b/tests/data/parser/parseLockErr1.out
new file mode 100644
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\ No newline at end of file
diff --git a/tests/data/parser/parseLockErr10.in b/tests/data/parser/parseLockErr10.in
new file mode 100644
index 0000000..5fbeff7
--- /dev/null
+++ b/tests/data/parser/parseLockErr10.in
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\ No newline at end of file
diff --git a/tests/data/parser/parseLockErr10.out b/tests/data/parser/parseLockErr10.out
new file mode 100644
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diff --git a/tests/data/parser/parseLockErr2.in b/tests/data/parser/parseLockErr2.in
new file mode 100644
index 0000000..df0081f
--- /dev/null
+++ b/tests/data/parser/parseLockErr2.in
@@ -0,0 +1 @@
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diff --git a/tests/data/parser/parseLockErr2.out b/tests/data/parser/parseLockErr2.out
new file mode 100644
index 0000000..7df1eae
--- /dev/null
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\ No newline at end of file
diff --git a/tests/data/parser/parseLockErr3.in b/tests/data/parser/parseLockErr3.in
new file mode 100644
index 0000000..b779b58
--- /dev/null
+++ b/tests/data/parser/parseLockErr3.in
@@ -0,0 +1,2 @@
+-- TABLES misspelled
+LOCK TABLE table1 AS t1 READ
\ No newline at end of file
diff --git a/tests/data/parser/parseLockErr3.out b/tests/data/parser/parseLockErr3.out
new file mode 100644
index 0000000..46c59de
--- /dev/null
+++ b/tests/data/parser/parseLockErr3.out
@@ -0,0 +1,4 @@
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\ No newline at end of file
diff --git a/tests/data/parser/parseLockErr4.in b/tests/data/parser/parseLockErr4.in
new file mode 100644
index 0000000..9fe5811
--- /dev/null
+++ b/tests/data/parser/parseLockErr4.in
@@ -0,0 +1,2 @@
+-- missing TABLES keyword
+LOCK table1 READ LOCAL
\ No newline at end of file
diff --git a/tests/data/parser/parseLockErr4.out b/tests/data/parser/parseLockErr4.out
new file mode 100644
index 0000000..865c309
--- /dev/null
+++ b/tests/data/parser/parseLockErr4.out
@@ -0,0 +1,4 @@
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\ No newline at end of file
diff --git a/tests/data/parser/parseLockErr5.in b/tests/data/parser/parseLockErr5.in
new file mode 100644
index 0000000..3737540
--- /dev/null
+++ b/tests/data/parser/parseLockErr5.in
@@ -0,0 +1,2 @@
+-- extraneous comma
+LOCK TABLES table1 READ LOCAL,
\ No newline at end of file
diff --git a/tests/data/parser/parseLockErr5.out b/tests/data/parser/parseLockErr5.out
new file mode 100644
index 0000000..7c35cad
--- /dev/null
+++ b/tests/data/parser/parseLockErr5.out
@@ -0,0 +1,4 @@
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\ No newline at end of file
diff --git a/tests/data/parser/parseLockErr6.in b/tests/data/parser/parseLockErr6.in
new file mode 100644
index 0000000..5223189
--- /dev/null
+++ b/tests/data/parser/parseLockErr6.in
@@ -0,0 +1,2 @@
+-- missing lock type
+LOCK TABLES table1
\ No newline at end of file
diff --git a/tests/data/parser/parseLockErr6.out b/tests/data/parser/parseLockErr6.out
new file mode 100644
index 0000000..bb8c1df
--- /dev/null
+++ b/tests/data/parser/parseLockErr6.out
@@ -0,0 +1,4 @@
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\ No newline at end of file
diff --git a/tests/data/parser/parseLockErr7.in b/tests/data/parser/parseLockErr7.in
new file mode 100644
index 0000000..324343a
--- /dev/null
+++ b/tests/data/parser/parseLockErr7.in
@@ -0,0 +1 @@
+LOCK TABLES table1 AS table1 non_keyword
\ No newline at end of file
diff --git a/tests/data/parser/parseLockErr7.out b/tests/data/parser/parseLockErr7.out
new file mode 100644
index 0000000..61e4d99
--- /dev/null
+++ b/tests/data/parser/parseLockErr7.out
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\ No newline at end of file
diff --git a/tests/data/parser/parseLockErr8.in b/tests/data/parser/parseLockErr8.in
new file mode 100644
index 0000000..052824d
--- /dev/null
+++ b/tests/data/parser/parseLockErr8.in
@@ -0,0 +1 @@
+LOCK TABLES table1 AS table1 READ AUTO_INCREMENT
\ No newline at end of file
diff --git a/tests/data/parser/parseLockErr8.out b/tests/data/parser/parseLockErr8.out
new file mode 100644
index 0000000..e37ca06
--- /dev/null
+++ b/tests/data/parser/parseLockErr8.out
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\ No newline at end of file
diff --git a/tests/data/parser/parseLockErr9.in b/tests/data/parser/parseLockErr9.in
new file mode 100644
index 0000000..e44d1dd
--- /dev/null
+++ b/tests/data/parser/parseLockErr9.in
@@ -0,0 +1 @@
+LOCK TABLES table1 AS table1 LOW_PRIORITY READ
\ No newline at end of file
diff --git a/tests/data/parser/parseLockErr9.out b/tests/data/parser/parseLockErr9.out
new file mode 100644
index 0000000..0dcc606
--- /dev/null
+++ b/tests/data/parser/parseLockErr9.out
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\ No newline at end of file
diff --git a/tests/data/parser/parseUnlock1.in b/tests/data/parser/parseUnlock1.in
new file mode 100644
index 0000000..bff5b2a
--- /dev/null
+++ b/tests/data/parser/parseUnlock1.in
@@ -0,0 +1 @@
+UNLOCK TABLES;
\ No newline at end of file
diff --git a/tests/data/parser/parseUnlock1.out b/tests/data/parser/parseUnlock1.out
new file mode 100644
index 0000000..044bfab
--- /dev/null
+++ b/tests/data/parser/parseUnlock1.out
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\ No newline at end of file
diff --git a/tests/data/parser/parseUnlockErr1.in b/tests/data/parser/parseUnlockErr1.in
new file mode 100644
index 0000000..2c0afd4
--- /dev/null
+++ b/tests/data/parser/parseUnlockErr1.in
@@ -0,0 +1 @@
+UNLOCK TABLES abc;
\ No newline at end of file
diff --git a/tests/data/parser/parseUnlockErr1.out b/tests/data/parser/parseUnlockErr1.out
new file mode 100644
index 0000000..6e37572
--- /dev/null
+++ b/tests/data/parser/parseUnlockErr1.out
@@ -0,0 +1 @@
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\ No newline at end of file