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<?php
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/*
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 * This file is part of Mustache.php.
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 *
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 * (c) 2010-2017 Justin Hileman
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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/**
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 * Describes a Mustache logger instance.
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 *
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 * This is identical to the Psr\Log\LoggerInterface.
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 *
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 * The message MUST be a string or object implementing __toString().
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 *
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 * The message MAY contain placeholders in the form: {foo} where foo
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 * will be replaced by the context data in key "foo".
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 *
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 * The context array can contain arbitrary data, the only assumption that
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 * can be made by implementors is that if an Exception instance is given
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 * to produce a stack trace, it MUST be in a key named "exception".
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 *
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 * See https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md
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 * for the full interface specification.
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 */
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interface Mustache_Logger
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{
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    /**
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     * Psr\Log compatible log levels.
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     */
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    const EMERGENCY = 'emergency';
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    const ALERT     = 'alert';
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    const CRITICAL  = 'critical';
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    const ERROR     = 'error';
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    const WARNING   = 'warning';
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    const NOTICE    = 'notice';
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    const INFO      = 'info';
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    const DEBUG     = 'debug';
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    /**
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     * System is unusable.
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     *
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     * @param string $message
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     * @param array  $context
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     */
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    public function emergency($message, array $context = array());
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    /**
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     * Action must be taken immediately.
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     *
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     * Example: Entire website down, database unavailable, etc. This should
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     * trigger the SMS alerts and wake you up.
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     *
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     * @param string $message
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     * @param array  $context
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     */
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    public function alert($message, array $context = array());
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    /**
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     * Critical conditions.
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     *
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     * Example: Application component unavailable, unexpected exception.
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     *
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     * @param string $message
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     * @param array  $context
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     */
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    public function critical($message, array $context = array());
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    /**
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     * Runtime errors that do not require immediate action but should typically
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     * be logged and monitored.
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     *
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     * @param string $message
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     * @param array  $context
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     */
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    public function error($message, array $context = array());
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    /**
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     * Exceptional occurrences that are not errors.
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     *
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     * Example: Use of deprecated APIs, poor use of an API, undesirable things
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     * that are not necessarily wrong.
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     *
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     * @param string $message
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     * @param array  $context
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     */
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    public function warning($message, array $context = array());
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    /**
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     * Normal but significant events.
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     *
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     * @param string $message
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     * @param array  $context
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     */
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    public function notice($message, array $context = array());
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    /**
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     * Interesting events.
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     *
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     * Example: User logs in, SQL logs.
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     *
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     * @param string $message
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     * @param array  $context
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     */
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    public function info($message, array $context = array());
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    /**
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     * Detailed debug information.
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     *
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     * @param string $message
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     * @param array  $context
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     */
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    public function debug($message, array $context = array());
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    /**
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     * Logs with an arbitrary level.
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     *
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     * @param mixed  $level
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     * @param string $message
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     * @param array  $context
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     */
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    public function log($level, $message, array $context = array());
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}