vendor/doctrine/dbal/lib/Doctrine/DBAL/SQLParserUtils.php

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<?php
/*
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "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 COPYRIGHT
 * OWNER OR CONTRIBUTORS 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.
 *
 * This software consists of voluntary contributions made by many individuals
 * and is licensed under the MIT license. For more information, see
 * <http://www.doctrine-project.org>.
 */

namespace Doctrine\DBAL;

/**
 * Utility class that parses sql statements with regard to types and parameters.
 *
 * @link   www.doctrine-project.org
 * @since  2.0
 * @author Benjamin Eberlei <kontakt@beberlei.de>
 */
class SQLParserUtils
{
    const POSITIONAL_TOKEN = '\?';
    const NAMED_TOKEN      = '(?<!:):[a-zA-Z_][a-zA-Z0-9_]*';

    // Quote characters within string literals can be preceded by a backslash.
    const ESCAPED_SINGLE_QUOTED_TEXT = "(?:'(?:\\\\\\\\)+'|'(?:[^'\\\\]|\\\\'?|'')*')";
    const ESCAPED_DOUBLE_QUOTED_TEXT = '(?:"(?:\\\\\\\\)+"|"(?:[^"\\\\]|\\\\"?)*")';
    const ESCAPED_BACKTICK_QUOTED_TEXT = '(?:`(?:\\\\\\\\)+`|`(?:[^`\\\\]|\\\\`?)*`)';
    const ESCAPED_BRACKET_QUOTED_TEXT = '(?<!\bARRAY)\[(?:[^\]])*\]';

    /**
     * Gets an array of the placeholders in an sql statements as keys and their positions in the query string.
     *
     * Returns an integer => integer pair (indexed from zero) for a positional statement
     * and a string => int[] pair for a named statement.
     *
     * @param string  $statement
     * @param boolean $isPositional
     *
     * @return array
     */
    static public function getPlaceholderPositions($statement, $isPositional = true)
    {
        $match = ($isPositional) ? '?' : ':';
        if (strpos($statement, $match) === false) {
            return array();
        }

        $token = ($isPositional) ? self::POSITIONAL_TOKEN : self::NAMED_TOKEN;
        $paramMap = array();