com.dongxiguo.zeroLog.formatters.Formatter.scala Maven / Gradle / Ivy
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/*
* Copyright 2011 杨博 (Yang Bo)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.dongxiguo.zeroLog.formatters
import com.dongxiguo.zeroLog.Level
import com.dongxiguo.zeroLog.Appendee
/**
* A Formatter provides support for formatting logs.
* Formatting a log consists of three steps:
* 1. Formatter converts various parameters to [[com.dongxiguo.zeroLog.Appendee]].
* 1. If the [[com.dongxiguo.zeroLog.Logger]] decided to print log,
* Formatter.log(Appendee,Level) is called to make final log
* text.
* 1. Formatter passes final log text to the
* [[scala.util.logging.Logged]] implemetation which Formatter
* mixed in.
*/
trait Formatter {
implicit def stringToAppendee(message: String): Appendee =
{ _.++=(message) }
implicit def pairToAppendee[A](
pair: (A, Throwable))(implicit converter: A => Appendee): Appendee
implicit def functionToAppendee[U](appendee: StringBuilder => U): Appendee =
{ (buffer: StringBuilder) => val _ = appendee(buffer) }
implicit def thrownToAppendee(thrown: Throwable): Appendee
implicit def log(content: Appendee, level: Level)
}