| Current File : //var/www/vinorea/vendor/greenlion/php-sql-parser/src/PHPSQLParser/processors/IndexProcessor.php |
<?php
/**
* IndexProcessor.php
*
* This file implements the processor for the INDEX statements.
*
* PHP version 5
*
* LICENSE:
* Copyright (c) 2010-2014 Justin Swanhart and André Rothe
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @author André Rothe <andre.rothe@phosco.info>
* @copyright 2010-2014 Justin Swanhart and André Rothe
* @license http://www.debian.org/misc/bsd.license BSD License (3 Clause)
* @version SVN: $Id$
*
*/
namespace PHPSQLParser\processors;
use PHPSQLParser\utils\ExpressionType;
/**
* This class processes the INDEX statements.
*
* @author André Rothe <andre.rothe@phosco.info>
* @license http://www.debian.org/misc/bsd.license BSD License (3 Clause)
*
*/
class IndexProcessor extends AbstractProcessor {
protected function getReservedType($token) {
return array('expr_type' => ExpressionType::RESERVED, 'base_expr' => $token);
}
protected function getConstantType($token) {
return array('expr_type' => ExpressionType::CONSTANT, 'base_expr' => $token);
}
protected function getOperatorType($token) {
return array('expr_type' => ExpressionType::OPERATOR, 'base_expr' => $token);
}
protected function processIndexColumnList($parsed) {
$processor = new IndexColumnListProcessor($this->options);
return $processor->process($parsed);
}
public function process($tokens) {
$currCategory = 'INDEX_NAME';
$result = array('base_expr' => false, 'name' => false, 'no_quotes' => false, 'index-type' => false, 'on' => false,
'options' => array());
$expr = array();
$base_expr = '';
$skip = 0;
foreach ($tokens as $tokenKey => $token) {
$trim = trim($token);
$base_expr .= $token;
if ($skip > 0) {
$skip--;
continue;
}
if ($skip < 0) {
break;
}
if ($trim === '') {
continue;
}
$upper = strtoupper($trim);
switch ($upper) {
case 'USING':
if ($prevCategory === 'CREATE_DEF') {
$expr[] = $this->getReservedType($trim);
$currCategory = 'TYPE_OPTION';
continue 2;
}
if ($prevCategory === 'TYPE_DEF') {
$expr[] = $this->getReservedType($trim);
$currCategory = 'INDEX_TYPE';
continue 2;
}
// else ?
break;
case 'KEY_BLOCK_SIZE':
if ($prevCategory === 'CREATE_DEF') {
$expr[] = $this->getReservedType($trim);
$currCategory = 'INDEX_OPTION';
continue 2;
}
// else ?
break;
case 'WITH':
if ($prevCategory === 'CREATE_DEF') {
$expr[] = $this->getReservedType($trim);
$currCategory = 'INDEX_PARSER';
continue 2;
}
// else ?
break;
case 'PARSER':
if ($currCategory === 'INDEX_PARSER') {
$expr[] = $this->getReservedType($trim);
continue 2;
}
// else ?
break;
case 'COMMENT':
if ($prevCategory === 'CREATE_DEF') {
$expr[] = $this->getReservedType($trim);
$currCategory = 'INDEX_COMMENT';
continue 2;
}
// else ?
break;
case 'ALGORITHM':
case 'LOCK':
if ($prevCategory === 'CREATE_DEF') {
$expr[] = $this->getReservedType($trim);
$currCategory = $upper . '_OPTION';
continue 2;
}
// else ?
break;
case '=':
// the optional operator
if (substr($currCategory, -7, 7) === '_OPTION') {
$expr[] = $this->getOperatorType($trim);
continue 2; // don't change the category
}
// else ?
break;
case 'ON':
if ($prevCategory === 'CREATE_DEF' || $prevCategory === 'TYPE_DEF') {
$expr[] = $this->getReservedType($trim);
$currCategory = 'TABLE_DEF';
continue 2;
}
// else ?
break;
default:
switch ($currCategory) {
case 'COLUMN_DEF':
if ($upper[0] === '(' && substr($upper, -1) === ')') {
$cols = $this->processIndexColumnList($this->removeParenthesisFromStart($trim));
$result['on']['base_expr'] .= $base_expr;
$result['on']['sub_tree'] = array('expr_type' => ExpressionType::COLUMN_LIST,
'base_expr' => $trim, 'sub_tree' => $cols);
}
$expr = array();
$base_expr = '';
$currCategory = 'CREATE_DEF';
break;
case 'TABLE_DEF':
// the table name
$expr[] = $this->getConstantType($trim);
// TODO: the base_expr should contain the column-def too
$result['on'] = array('expr_type' => ExpressionType::TABLE, 'base_expr' => $base_expr,
'name' => $trim, 'no_quotes' => $this->revokeQuotation($trim),
'sub_tree' => false);
$expr = array();
$base_expr = '';
$currCategory = 'COLUMN_DEF';
continue 3;
case 'INDEX_NAME':
$result['base_expr'] = $result['name'] = $trim;
$result['no_quotes'] = $this->revokeQuotation($trim);
$expr = array();
$base_expr = '';
$currCategory = 'TYPE_DEF';
break;
case 'INDEX_PARSER':
// the parser name
$expr[] = $this->getConstantType($trim);
$result['options'][] = array('expr_type' => ExpressionType::INDEX_PARSER,
'base_expr' => trim($base_expr), 'sub_tree' => $expr);
$expr = array();
$base_expr = '';
$currCategory = 'CREATE_DEF';
break;
case 'INDEX_COMMENT':
// the index comment
$expr[] = $this->getConstantType($trim);
$result['options'][] = array('expr_type' => ExpressionType::COMMENT,
'base_expr' => trim($base_expr), 'sub_tree' => $expr);
$expr = array();
$base_expr = '';
$currCategory = 'CREATE_DEF';
break;
case 'INDEX_OPTION':
// the key_block_size
$expr[] = $this->getConstantType($trim);
$result['options'][] = array('expr_type' => ExpressionType::INDEX_SIZE,
'base_expr' => trim($base_expr), 'size' => $upper,
'sub_tree' => $expr);
$expr = array();
$base_expr = '';
$currCategory = 'CREATE_DEF';
break;
case 'INDEX_TYPE':
case 'TYPE_OPTION':
// BTREE or HASH
$expr[] = $this->getReservedType($trim);
if ($currCategory === 'INDEX_TYPE') {
$result['index-type'] = array('expr_type' => ExpressionType::INDEX_TYPE,
'base_expr' => trim($base_expr), 'using' => $upper,
'sub_tree' => $expr);
} else {
$result['options'][] = array('expr_type' => ExpressionType::INDEX_TYPE,
'base_expr' => trim($base_expr), 'using' => $upper,
'sub_tree' => $expr);
}
$expr = array();
$base_expr = '';
$currCategory = 'CREATE_DEF';
break;
case 'LOCK_OPTION':
// DEFAULT|NONE|SHARED|EXCLUSIVE
$expr[] = $this->getReservedType($trim);
$result['options'][] = array('expr_type' => ExpressionType::INDEX_LOCK,
'base_expr' => trim($base_expr), 'lock' => $upper,
'sub_tree' => $expr);
$expr = array();
$base_expr = '';
$currCategory = 'CREATE_DEF';
break;
case 'ALGORITHM_OPTION':
// DEFAULT|INPLACE|COPY
$expr[] = $this->getReservedType($trim);
$result['options'][] = array('expr_type' => ExpressionType::INDEX_ALGORITHM,
'base_expr' => trim($base_expr), 'algorithm' => $upper,
'sub_tree' => $expr);
$expr = array();
$base_expr = '';
$currCategory = 'CREATE_DEF';
break;
default:
break;
}
break;
}
$prevCategory = $currCategory;
$currCategory = '';
}
if ($result['options'] === array()) {
$result['options'] = false;
}
return $result;
}
}
?>