IndentationCorrectingWriter

java.lang.Object
- java.io.Writer
- - org.mapstruct.ap.internal.writer.IndentationCorrectingWriter

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable, java.lang.Appendable, java.lang.AutoCloseable
```
class IndentationCorrectingWriter
extends java.io.Writer
```
EXPERIMENTAL: A writer used to write processed templates which corrects line indentation based on the nesting level as implied by (normal and curly) braces.
This writer discards any leading whitespace characters following to a line break character. When the first non-whitespace character is written after a line break, the correct indentation characters are added, which is four whitespace characters per indentation level.
The state pattern is line oriented. It starts by writing text. Indentation is increased if a brace '('or brace '{' is encountered in the code to be generated and written out in state: IN_TEXT_START_OF_LINE. Whenever a line end occurs (PC or Linux style) the amount of enters is checked and at max set to 2. Whenever a string definition is encountered in the code that should be generated, increasing the indentation is stopped (so `{` and '(' are ignored) until the end of the string is encountered ('"'). To avoid writing a new indentation, the state then returns to IN_TEXT.
This is a very basic implementation which does not take into account comments, escaping etc.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`private static class`	`IndentationCorrectingWriter.State`	A state of parsing a given character buffer.
`private static class`	`IndentationCorrectingWriter.StateContext`	Keeps the current context of parsing the given character buffer.

Field Summary

Fields
Modifier and Type	Field	Description
`private IndentationCorrectingWriter.StateContext`	`context`
`private IndentationCorrectingWriter.State`	`currentState`
`private static boolean`	`DEBUG`	Set to true to enable output of written characters on the console.
`private static boolean`	`IS_WINDOWS`
`private static java.lang.String`	`LINE_SEPARATOR`

Fields inherited from class java.io.Writer
lock

Constructor Summary

Constructors
Constructor Description

IndentationCorrectingWriter(java.io.Writer out)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`close()`
`void`	`flush()`
`private static char[]`	`getIndentation(int indentationLevel)`
`private static boolean`	`isWindows()`
`void`	`write(char[] cbuf, int off, int len)`

Methods inherited from class java.io.Writer
append, append, append, nullWriter, write, write, write, write

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DEBUG
```
private static final boolean DEBUG
```
Set to true to enable output of written characters on the console.

See Also:

Constant Field Values

LINE_SEPARATOR

private static final java.lang.String LINE_SEPARATOR

IS_WINDOWS

private static final boolean IS_WINDOWS

currentState

private IndentationCorrectingWriter.State currentState

context

private final IndentationCorrectingWriter.StateContext context

Constructor Detail

IndentationCorrectingWriter

IndentationCorrectingWriter(java.io.Writer out)

Method Detail
- write
```
public void write(char[] cbuf,
                  int off,
                  int len)
           throws java.io.IOException
```
  Specified by:
  
  write in class java.io.Writer
  
  Throws:
  
  java.io.IOException
- flush
```
public void flush()
           throws java.io.IOException
```
  Specified by:
  
  flush in interface java.io.Flushable
  
  Specified by:
  
  flush in class java.io.Writer
  
  Throws:
  
  java.io.IOException
- close
```
public void close()
           throws java.io.IOException
```
  Specified by:
  
  close in interface java.lang.AutoCloseable
  
  Specified by:
  
  close in interface java.io.Closeable
  
  Specified by:
  
  close in class java.io.Writer
  
  Throws:
  
  java.io.IOException
- isWindows
```
private static boolean isWindows()
```
- getIndentation
```
private static char[] getIndentation(int indentationLevel)
```