Public Member Functions | Static Public Member Functions | Public Attributes | Static Private Attributes

de.fraunhofer.isst.axbench.axlang.parser.Token Class Reference

List of all members.

Public Member Functions

Object getValue ()
 Token ()
 Token (int kind, String image)
 Token (int kind)
String toString ()

Static Public Member Functions

static Token newToken (int ofKind, String image)
static Token newToken (int ofKind)

Public Attributes

int beginColumn
int beginLine
int endColumn
int endLine
String image
int kind
Token next
Token specialToken

Static Private Attributes

static final long serialVersionUID = 1L

Detailed Description

Describes the input token stream.


Constructor & Destructor Documentation

de.fraunhofer.isst.axbench.axlang.parser.Token.Token (  ) 

No-argument constructor

de.fraunhofer.isst.axbench.axlang.parser.Token.Token ( int  kind  ) 

Constructs a new token for the specified Image.

de.fraunhofer.isst.axbench.axlang.parser.Token.Token ( int  kind,
String  image 
)

Constructs a new token for the specified Image and Kind.


Member Function Documentation

Object de.fraunhofer.isst.axbench.axlang.parser.Token.getValue (  ) 

An optional attribute value of the Token. Tokens which are not used as syntactic sugar will often contain meaningful values that will be used later on by the compiler or interpreter. This attribute value is often different from the image. Any subclass of Token that actually wants to return a non-null value can override this method as appropriate.

static Token de.fraunhofer.isst.axbench.axlang.parser.Token.newToken ( int  ofKind  )  [static]
static Token de.fraunhofer.isst.axbench.axlang.parser.Token.newToken ( int  ofKind,
String  image 
) [static]

Returns a new Token object, by default. However, if you want, you can create and return subclass objects based on the value of ofKind. Simply add the cases to the switch for all those special cases. For example, if you have a subclass of Token called IDToken that you want to create if ofKind is ID, simply add something like :

case MyParserConstants.ID : return new IDToken(ofKind, image);

to the following switch statement. Then you can cast matchedToken variable to the appropriate type and use sit in your lexical actions.

String de.fraunhofer.isst.axbench.axlang.parser.Token.toString (  ) 

Returns the image.


Member Data Documentation

The column number of the first character of this Token.

The line number of the first character of this Token.

The column number of the last character of this Token.

The line number of the last character of this Token.

The string image of the token.

An integer that describes the kind of this token. This numbering system is determined by JavaCCParser, and a table of these numbers is stored in the file ...Constants.java.

A reference to the next regular (non-special) token from the input stream. If this is the last token from the input stream, or if the token manager has not read tokens beyond this one, this field is set to null. This is true only if this token is also a regular token. Otherwise, see below for a description of the contents of this field.

The version identifier for this Serializable class. Increment only if the serialized form of the class changes.

This field is used to access special tokens that occur prior to this token, but after the immediately preceding regular (non-special) token. If there are no such special tokens, this field is set to null. When there are more than one such special token, this field refers to the last of these special tokens, which in turn refers to the next previous special token through its specialToken field, and so on until the first special token (whose specialToken field is null). The next fields of special tokens refer to other special tokens that immediately follow it (without an intervening regular token). If there is no such token, this field is null.