alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Scala example source code file (CodeWriter.scala)

This example Scala source code file (CodeWriter.scala) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Scala source code examples by using tags.

All credit for the original source code belongs to scala-lang.org; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Scala tags/keywords

boolean, byte, codewriter, double, float, int, io, long, short, string

The CodeWriter.scala Scala example source code

/*     ___ ____ ___   __   ___   ___
**    / _// __// _ | / /  / _ | / _ \    Scala classfile decoder
**  __\ \/ /__/ __ |/ /__/ __ |/ ___/    (c) 2003-2013, LAMP/EPFL
** /____/\___/_/ |_/____/_/ |_/_/        http://scala-lang.org/
**
*/


package scala
package tools.scalap

import java.io._


class CodeWriter(writer: Writer) {

  private val nl = scala.compat.Platform.EOL
  private var step = "  "
  private var level = 0
  private var align = false
  private var space = false
  private var line = false

  def getWriter = writer

  def getIndentLevel = level

  def setIndentLevel(level: Int): CodeWriter = {
    this.level = level
    this
  }

  def getIndentWidth = if (step == null) -1 else step.length()

  def setIndentWidth(width: Int): CodeWriter =
    setIndentString(List.fill(width)(' ').mkString)

  def getIndentString = step;

  def setIndentString(step: String): CodeWriter = {
    this.step = step
    this
  }

  def indent: CodeWriter = {
    level += 1
    this
  }

  def undent: CodeWriter = {
    level -= 1
    this
  }

  def newline: CodeWriter = {
    if (step == null)
      newspace
    else if (!line) {
      try {
        writer.write(nl)
      } catch {
        case e: Exception => sys.error("IO error")
      }
      line = align
      align = true
      space = false
      this
    } else
      this
  }

  def newspace: CodeWriter = {
    space = !align
    this
  }

  def *() = {}

  def println: CodeWriter = newline

  def println(value: Boolean): CodeWriter = print(value).newline

  def println(value: Byte): CodeWriter = print(value).newline

  def println(value: Short): CodeWriter = print(value).newline

  def println(value: Char): CodeWriter = print(value).newline

  def println(value: Int): CodeWriter = print(value).newline

  def println(value: Long): CodeWriter = print(value).newline

  def println(value: Float): CodeWriter = print(value).newline

  def println(value: Double): CodeWriter = print(value).newline

  def println(value: String): CodeWriter = print(value).newline

  def print(value: Boolean): CodeWriter = print(String.valueOf(value))

  def print(value: Byte): CodeWriter = print(String.valueOf(value.toInt))

  def print(value: Short): CodeWriter = print(String.valueOf(value.toInt))

  def print(value: Char): CodeWriter = print(String.valueOf(value))

  def print(value: Int): CodeWriter = print(String.valueOf(value))

  def print(value: Long): CodeWriter = print(String.valueOf(value))

  def print(value: Float): CodeWriter = print(String.valueOf(value))

  def print(value: Double): CodeWriter = print(String.valueOf(value))

  def print(value: String): CodeWriter = try {
    if (align) {
      var i = 0
      while (i < level) {
        writer.write(step)
        i += 1
      }
    }
    if (space)
      writer.write(" ")
    writer.write(value)
    align = false
    space = false
    line = false
    this
  } catch {
    case e: Exception => sys.error("IO error")
  }

  override def toString(): String = writer.toString()
}

Other Scala source code examples

Here is a short list of links related to this Scala CodeWriter.scala source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.