SimpleCharStream (Apache Tomcat 8.0.15 API Documentation)

java.lang.Object
- org.apache.el.parser.SimpleCharStream

```
public class SimpleCharStream
extends Object
```
An implementation of interface CharStream, where the stream is assumed to contain only ASCII characters (without unicode processing).

Field Summary

Fields
Modifier and Type	Field and Description
`protected int[]`	`bufcolumn`
`protected char[]`	`buffer`
`protected int[]`	`bufline`
`int`	`bufpos` Position in buffer.
`protected int`	`column`
`protected int`	`inBuf`
`protected Reader`	`inputStream`
`protected int`	`line`
`protected int`	`maxNextCharInd`
`protected boolean`	`prevCharIsCR`
`protected boolean`	`prevCharIsLF`
`static boolean`	`staticFlag` Whether parser is static.
`protected int`	`tabSize`

Constructor Summary

Constructors
Constructor and Description
`SimpleCharStream(InputStream dstream)` Constructor.
`SimpleCharStream(InputStream dstream, int startline, int startcolumn)` Constructor.
`SimpleCharStream(InputStream dstream, int startline, int startcolumn, int buffersize)` Constructor.
`SimpleCharStream(InputStream dstream, String encoding)` Constructor.
`SimpleCharStream(InputStream dstream, String encoding, int startline, int startcolumn)` Constructor.
`SimpleCharStream(InputStream dstream, String encoding, int startline, int startcolumn, int buffersize)` Constructor.
`SimpleCharStream(Reader dstream)` Constructor.
`SimpleCharStream(Reader dstream, int startline, int startcolumn)` Constructor.
`SimpleCharStream(Reader dstream, int startline, int startcolumn, int buffersize)` Constructor.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`adjustBeginLineColumn(int newLine, int newCol)` Method to adjust line and column numbers for the start of a token.
`void`	`backup(int amount)` Backup a number of characters.
`char`	`BeginToken()` Start.
`void`	`Done()` Reset buffer when finished.
`protected void`	`ExpandBuff(boolean wrapAround)`
`protected void`	`FillBuff()`
`int`	`getBeginColumn()` Get token beginning column number.
`int`	`getBeginLine()` Get token beginning line number.
`int`	`getColumn()` Deprecated.
`int`	`getEndColumn()` Get token end column number.
`int`	`getEndLine()` Get token end line number.
`String`	`GetImage()` Get token literal value.
`int`	`getLine()` Deprecated.
`char[]`	`GetSuffix(int len)` Get the suffix.
`protected int`	`getTabSize(int i)`
`char`	`readChar()` Read a character.
`void`	`ReInit(InputStream dstream)` Reinitialise.
`void`	`ReInit(InputStream dstream, int startline, int startcolumn)` Reinitialise.
`void`	`ReInit(InputStream dstream, int startline, int startcolumn, int buffersize)` Reinitialise.
`void`	`ReInit(InputStream dstream, String encoding)` Reinitialise.
`void`	`ReInit(InputStream dstream, String encoding, int startline, int startcolumn)` Reinitialise.
`void`	`ReInit(InputStream dstream, String encoding, int startline, int startcolumn, int buffersize)` Reinitialise.
`void`	`ReInit(Reader dstream)` Reinitialise.
`void`	`ReInit(Reader dstream, int startline, int startcolumn)` Reinitialise.
`void`	`ReInit(Reader dstream, int startline, int startcolumn, int buffersize)` Reinitialise.
`protected void`	`setTabSize(int i)`
`protected void`	`UpdateLineColumn(char c)`

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

Field Detail

staticFlag
```
public static final boolean staticFlag
```
Whether parser is static.

See Also:
Constant Field Values

bufpos
```
public int bufpos
```
Position in buffer.

bufline
```
protected int[] bufline
```

bufcolumn
```
protected int[] bufcolumn
```

column
```
protected int column
```

line
```
protected int line
```

prevCharIsCR
```
protected boolean prevCharIsCR
```

prevCharIsLF
```
protected boolean prevCharIsLF
```

inputStream
```
protected Reader inputStream
```

buffer
```
protected char[] buffer
```

maxNextCharInd
```
protected int maxNextCharInd
```

inBuf
```
protected int inBuf
```

tabSize
```
protected int tabSize
```

Constructor Detail

SimpleCharStream

public SimpleCharStream(Reader dstream,
                int startline,
                int startcolumn,
                int buffersize)

Constructor.

SimpleCharStream

public SimpleCharStream(Reader dstream,
                int startline,
                int startcolumn)

Constructor.

SimpleCharStream

public SimpleCharStream(Reader dstream)

Constructor.

SimpleCharStream

public SimpleCharStream(InputStream dstream,
                String encoding,
                int startline,
                int startcolumn,
                int buffersize)
                 throws UnsupportedEncodingException

Constructor.

Throws:: UnsupportedEncodingException

SimpleCharStream

public SimpleCharStream(InputStream dstream,
                int startline,
                int startcolumn,
                int buffersize)

Constructor.

SimpleCharStream

public SimpleCharStream(InputStream dstream,
                String encoding,
                int startline,
                int startcolumn)
                 throws UnsupportedEncodingException

Constructor.

Throws:: UnsupportedEncodingException

SimpleCharStream

public SimpleCharStream(InputStream dstream,
                int startline,
                int startcolumn)

Constructor.

SimpleCharStream

public SimpleCharStream(InputStream dstream,
                String encoding)
                 throws UnsupportedEncodingException

Constructor.

Throws:: UnsupportedEncodingException

SimpleCharStream

public SimpleCharStream(InputStream dstream)

Constructor.

Method Detail

setTabSize
```
protected void setTabSize(int i)
```

getTabSize
```
protected int getTabSize(int i)
```

ExpandBuff

protected void ExpandBuff(boolean wrapAround)

FillBuff

protected void FillBuff()
                 throws IOException

Throws:: IOException

BeginToken

public char BeginToken()
                throws IOException

Start.

Throws:: IOException

UpdateLineColumn

protected void UpdateLineColumn(char c)

readChar

public char readChar()
              throws IOException

Read a character.

Throws:: IOException

getColumn
```
@Deprecated
public int getColumn()
```
Deprecated.

getLine
```
@Deprecated
public int getLine()
```
Deprecated.

getEndColumn
```
public int getEndColumn()
```
Get token end column number.

getEndLine
```
public int getEndLine()
```
Get token end line number.

getBeginColumn
```
public int getBeginColumn()
```
Get token beginning column number.

getBeginLine
```
public int getBeginLine()
```
Get token beginning line number.

backup
```
public void backup(int amount)
```
Backup a number of characters.

ReInit

public void ReInit(Reader dstream,
          int startline,
          int startcolumn,
          int buffersize)

Reinitialise.

ReInit

public void ReInit(Reader dstream,
          int startline,
          int startcolumn)

Reinitialise.

ReInit
```
public void ReInit(Reader dstream)
```
Reinitialise.

ReInit

public void ReInit(InputStream dstream,
          String encoding,
          int startline,
          int startcolumn,
          int buffersize)
            throws UnsupportedEncodingException

Reinitialise.

Throws:: UnsupportedEncodingException

ReInit

public void ReInit(InputStream dstream,
          int startline,
          int startcolumn,
          int buffersize)

Reinitialise.

ReInit

public void ReInit(InputStream dstream,
          String encoding)
            throws UnsupportedEncodingException

Reinitialise.

Throws:: UnsupportedEncodingException

ReInit

public void ReInit(InputStream dstream)

Reinitialise.

ReInit

public void ReInit(InputStream dstream,
          String encoding,
          int startline,
          int startcolumn)
            throws UnsupportedEncodingException

Reinitialise.

Throws:: UnsupportedEncodingException

ReInit

public void ReInit(InputStream dstream,
          int startline,
          int startcolumn)

Reinitialise.

GetImage
```
public String GetImage()
```
Get token literal value.

GetSuffix
```
public char[] GetSuffix(int len)
```
Get the suffix.

Done
```
public void Done()
```
Reset buffer when finished.

adjustBeginLineColumn

public void adjustBeginLineColumn(int newLine,
                         int newCol)

Method to adjust line and column numbers for the start of a token.

Class SimpleCharStream

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

staticFlag

bufpos

bufline

bufcolumn

column

line

prevCharIsCR

prevCharIsLF

inputStream

buffer

maxNextCharInd

inBuf

tabSize

Constructor Detail

SimpleCharStream

SimpleCharStream

SimpleCharStream

SimpleCharStream

SimpleCharStream

SimpleCharStream

SimpleCharStream

SimpleCharStream

SimpleCharStream

Method Detail

setTabSize

getTabSize

ExpandBuff

FillBuff

BeginToken

UpdateLineColumn

readChar

getColumn

getLine

getEndColumn

getEndLine

getBeginColumn

getBeginLine

backup

ReInit

ReInit

ReInit

ReInit

ReInit

ReInit

ReInit

ReInit

ReInit

GetImage

GetSuffix

Done

adjustBeginLineColumn