CommonToken

java.lang.Object
- org.antlr.v4.runtime.CommonToken

All Implemented Interfaces:

java.io.Serializable, Token, WritableToken

Direct Known Subclasses:

TokenTagToken
```
public class CommonToken
extends java.lang.Object
implements WritableToken, java.io.Serializable
```
See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field and Description
`protected int`	`channel` This is the backing field for `getChannel()` and `setChannel(int)`.
`protected int`	`charPositionInLine` This is the backing field for `getCharPositionInLine()` and `setCharPositionInLine(int)`.
`protected static Pair<TokenSource,CharStream>`	`EMPTY_SOURCE` An empty `Pair` which is used as the default value of `source` for tokens that do not have a source.
`protected int`	`index` This is the backing field for `getTokenIndex()` and `setTokenIndex(int)`.
`protected int`	`line` This is the backing field for `getLine()` and `setLine(int)`.
`protected Pair<TokenSource,CharStream>`	`source` This is the backing field for `getTokenSource()` and `getInputStream()`.
`protected int`	`start` This is the backing field for `getStartIndex()` and `setStartIndex(int)`.
`protected int`	`stop` This is the backing field for `getStopIndex()` and `setStopIndex(int)`.
`protected java.lang.String`	`text` This is the backing field for `getText()` when the token text is explicitly set in the constructor or via `setText(java.lang.String)`.
`protected int`	`type` This is the backing field for `getType()` and `setType(int)`.

Fields inherited from interface org.antlr.v4.runtime.Token
DEFAULT_CHANNEL, EOF, EPSILON, HIDDEN_CHANNEL, INVALID_TYPE, MIN_USER_CHANNEL_VALUE, MIN_USER_TOKEN_TYPE

Constructor Summary

Constructors
Constructor and Description
`CommonToken(int type)` Constructs a new `CommonToken` with the specified token type.
`CommonToken(int type, java.lang.String text)` Constructs a new `CommonToken` with the specified token type and text.
`CommonToken(Pair<TokenSource,CharStream> source, int type, int channel, int start, int stop)`
`CommonToken(Token oldToken)` Constructs a new `CommonToken` as a copy of another `Token`.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`int`	`getChannel()` Return the channel this token.
`int`	`getCharPositionInLine()` The index of the first character of this token relative to the beginning of the line at which it occurs, 0..n-1
`CharStream`	`getInputStream()` Gets the `CharStream` from which this token was derived.
`int`	`getLine()` The line number on which the 1st character of this token was matched, line=1..n
`int`	`getStartIndex()` The starting character index of the token This method is optional; return -1 if not implemented.
`int`	`getStopIndex()` The last character index of the token.
`java.lang.String`	`getText()` Get the text of the token.
`int`	`getTokenIndex()` An index from 0..n-1 of the token object in the input stream.
`TokenSource`	`getTokenSource()` Gets the `TokenSource` which created this token.
`int`	`getType()` Get the token type of the token
`void`	`setChannel(int channel)`
`void`	`setCharPositionInLine(int charPositionInLine)`
`void`	`setLine(int line)`
`void`	`setStartIndex(int start)`
`void`	`setStopIndex(int stop)`
`void`	`setText(java.lang.String text)` Explicitly set the text for this token.
`void`	`setTokenIndex(int index)`
`void`	`setType(int type)`
`java.lang.String`	`toString()`
`java.lang.String`	`toString(Recognizer r)`

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

- Field Detail
  - EMPTY_SOURCE
```
protected static final Pair<TokenSource,CharStream> EMPTY_SOURCE
```
    An empty Pair which is used as the default value of source for tokens that do not have a source.
  - type
```
protected int type
```
    This is the backing field for getType() and setType(int).
  - line
```
protected int line
```
    This is the backing field for getLine() and setLine(int).
  - charPositionInLine
```
protected int charPositionInLine
```
    This is the backing field for getCharPositionInLine() and setCharPositionInLine(int).
  - channel
```
protected int channel
```
    This is the backing field for getChannel() and setChannel(int).
  - source
```
protected Pair<TokenSource,CharStream> source
```
    This is the backing field for getTokenSource() and getInputStream().
    These properties share a field to reduce the memory footprint of CommonToken. Tokens created by a CommonTokenFactory from the same source and input stream share a reference to the same Pair containing these values.
  - text
```
protected java.lang.String text
```
    This is the backing field for getText() when the token text is explicitly set in the constructor or via setText(java.lang.String).
    
    See Also:
    
    getText()
  - index
```
protected int index
```
    This is the backing field for getTokenIndex() and setTokenIndex(int).
  - start
```
protected int start
```
    This is the backing field for getStartIndex() and setStartIndex(int).
  - stop
```
protected int stop
```
    This is the backing field for getStopIndex() and setStopIndex(int).
- Constructor Detail
  - CommonToken
```
public CommonToken(int type)
```
    Constructs a new CommonToken with the specified token type.
    
    Parameters:
    
    type - The token type.
  - CommonToken
```
public CommonToken(Pair<TokenSource,CharStream> source,
                   int type,
                   int channel,
                   int start,
                   int stop)
```
  - CommonToken
```
public CommonToken(int type,
                   java.lang.String text)
```
    Constructs a new CommonToken with the specified token type and text.
    
    Parameters:
    
    type - The token type.
    
    text - The text of the token.
  - CommonToken
```
public CommonToken(Token oldToken)
```
    Constructs a new CommonToken as a copy of another Token.
    If oldToken is also a CommonToken instance, the newly constructed token will share a reference to the text field and the Pair stored in source. Otherwise, text will be assigned the result of calling getText(), and source will be constructed from the result of Token.getTokenSource() and Token.getInputStream().
    
    Parameters:
    
    oldToken - The token to copy.
- Method Detail
  - getType
```
public int getType()
```
    Description copied from interface: Token
    
    Get the token type of the token
    
    Specified by:
    
    getType in interface Token
  - setLine
```
public void setLine(int line)
```
    Specified by:
    
    setLine in interface WritableToken
  - getText
```
public java.lang.String getText()
```
    Description copied from interface: Token
    
    Get the text of the token.
    
    Specified by:
    
    getText in interface Token
  - setText
```
public void setText(java.lang.String text)
```
    Explicitly set the text for this token. If {code text} is not null, then getText() will return this value rather than extracting the text from the input.
    
    Specified by:
    
    setText in interface WritableToken
    
    Parameters:
    
    text - The explicit text of the token, or null if the text should be obtained from the input along with the start and stop indexes of the token.
  - getLine
```
public int getLine()
```
    Description copied from interface: Token
    
    The line number on which the 1st character of this token was matched, line=1..n
    
    Specified by:
    
    getLine in interface Token
  - getCharPositionInLine
```
public int getCharPositionInLine()
```
    Description copied from interface: Token
    
    The index of the first character of this token relative to the beginning of the line at which it occurs, 0..n-1
    
    Specified by:
    
    getCharPositionInLine in interface Token
  - setCharPositionInLine
```
public void setCharPositionInLine(int charPositionInLine)
```
    Specified by:
    
    setCharPositionInLine in interface WritableToken
  - getChannel
```
public int getChannel()
```
    Description copied from interface: Token
    
    Return the channel this token. Each token can arrive at the parser on a different channel, but the parser only "tunes" to a single channel. The parser ignores everything not on DEFAULT_CHANNEL.
    
    Specified by:
    
    getChannel in interface Token
  - setChannel
```
public void setChannel(int channel)
```
    Specified by:
    
    setChannel in interface WritableToken
  - setType
```
public void setType(int type)
```
    Specified by:
    
    setType in interface WritableToken
  - getStartIndex
```
public int getStartIndex()
```
    Description copied from interface: Token
    
    The starting character index of the token This method is optional; return -1 if not implemented.
    
    Specified by:
    
    getStartIndex in interface Token
  - setStartIndex
```
public void setStartIndex(int start)
```
  - getStopIndex
```
public int getStopIndex()
```
    Description copied from interface: Token
    
    The last character index of the token. This method is optional; return -1 if not implemented.
    
    Specified by:
    
    getStopIndex in interface Token
  - setStopIndex
```
public void setStopIndex(int stop)
```
  - getTokenIndex
```
public int getTokenIndex()
```
    Description copied from interface: Token
    
    An index from 0..n-1 of the token object in the input stream. This must be valid in order to print token streams and use TokenRewriteStream. Return -1 to indicate that this token was conjured up since it doesn't have a valid index.
    
    Specified by:
    
    getTokenIndex in interface Token
  - setTokenIndex
```
public void setTokenIndex(int index)
```
    Specified by:
    
    setTokenIndex in interface WritableToken
  - getTokenSource
```
public TokenSource getTokenSource()
```
    Description copied from interface: Token
    
    Gets the TokenSource which created this token.
    
    Specified by:
    
    getTokenSource in interface Token
  - getInputStream
```
public CharStream getInputStream()
```
    Description copied from interface: Token
    
    Gets the CharStream from which this token was derived.
    
    Specified by:
    
    getInputStream in interface Token
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - toString
```
public java.lang.String toString(Recognizer r)
```

Class CommonToken

Field Summary

Fields inherited from interface org.antlr.v4.runtime.Token

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

EMPTY_SOURCE

type

line

charPositionInLine

channel

source

text

index

start

stop

Constructor Detail

CommonToken

CommonToken

CommonToken

CommonToken

Method Detail

getType

setLine

getText

setText

getLine

getCharPositionInLine

setCharPositionInLine

getChannel

setChannel

setType

getStartIndex

setStartIndex

getStopIndex

setStopIndex

getTokenIndex

setTokenIndex

getTokenSource

getInputStream

toString

toString