119 lines
4.1 KiB
PHP
119 lines
4.1 KiB
PHP
<?php
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/**
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* WithProcessor.php
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*
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* This file implements the processor for Oracle's WITH statements.
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*
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* Copyright (c) 2010-2012, Justin Swanhart
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* with contributions by André Rothe <arothe@phosco.info, phosco@gmx.de>
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*/
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namespace PHPSQLParser\processors;
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use PHPSQLParser\utils\ExpressionType;
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/**
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*
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* This class processes Oracle's WITH statements.
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*
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* @author André Rothe <andre.rothe@phosco.info>
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* @license http://www.debian.org/misc/bsd.license BSD License (3 Clause)
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*
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*/
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class WithProcessor extends AbstractProcessor {
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protected function processTopLevel($sql) {
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$processor = new DefaultProcessor($this->options);
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return $processor->process($sql);
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}
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protected function buildTableName($token) {
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return array('expr_type' => ExpressionType::TEMPORARY_TABLE, 'name'=>$token, 'base_expr' => $token, 'no_quotes' => $this->revokeQuotation($token));
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}
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public function process($tokens) {
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$out = array();
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$resultList = array();
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$category = '';
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$base_expr = '';
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$prev = '';
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foreach ($tokens as $token) {
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$base_expr .= $token;
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$upper = strtoupper(trim($token));
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if ($this->isWhitespaceToken($token)) {
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continue;
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}
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$trim = trim($token);
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switch ($upper) {
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case 'AS':
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if ($prev !== 'TABLENAME') {
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// error or tablename is AS
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$resultList[] = $this->buildTableName($trim);
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$category = 'TABLENAME';
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break;
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}
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$resultList[] = array('expr_type' => ExpressionType::RESERVED, 'base_expr' => $trim);
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$category = $upper;
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break;
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case ',':
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// ignore
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$base_expr = '';
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break;
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default:
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switch ($prev) {
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case 'AS':
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// it follows a parentheses pair
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$subtree = $this->processTopLevel($this->removeParenthesisFromStart($token));
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$resultList[] = array('expr_type' => ExpressionType::BRACKET_EXPRESSION, 'base_expr' => $trim, 'sub_tree' => $subtree);
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$out[] = array('expr_type' => ExpressionType::SUBQUERY_FACTORING, 'base_expr' => trim($base_expr), 'sub_tree' => $resultList);
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$resultList = array();
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$category = '';
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break;
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case '':
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// we have the name of the table
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$resultList[] = $this->buildTableName($trim);
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$category = 'TABLENAME';
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break;
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default:
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// ignore
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break;
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}
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break;
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}
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$prev = $category;
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}
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return $out;
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}
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}
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?>
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