Magentix2  2.1.1
es.upv.dsic.gti_ia.norms.Token Class Reference
Collaboration diagram for es.upv.dsic.gti_ia.norms.Token:

List of all members.

Public Member Functions

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

Static Public Member Functions

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

Public Attributes

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

Detailed Description

Describes the input token stream.

Definition at line 9 of file Token.java.


Constructor & Destructor Documentation

No-argument constructor

Definition at line 78 of file Token.java.

{}

Constructs a new token for the specified Image.

Definition at line 83 of file Token.java.

  {
    this(kind, null);
  }
es.upv.dsic.gti_ia.norms.Token.Token ( int  kind,
String  image 
)

Constructs a new token for the specified Image and Kind.

Definition at line 91 of file Token.java.

  {
    this.kind = kind;
    this.image = image;
  }

Member Function Documentation

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.

Definition at line 71 of file Token.java.

                           {
    return null;
  }
static Token es.upv.dsic.gti_ia.norms.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.

Definition at line 117 of file Token.java.

  {
    switch(ofKind)
    {
      default : return new Token(ofKind, image);
    }
  }
static Token es.upv.dsic.gti_ia.norms.Token.newToken ( int  ofKind) [static]

Definition at line 125 of file Token.java.

  {
    return newToken(ofKind, null);
  }

Returns the image.

Definition at line 100 of file Token.java.

  {
    return image;
  }

Member Data Documentation

The column number of the first character of this Token.

Definition at line 28 of file Token.java.

The line number of the first character of this Token.

Definition at line 26 of file Token.java.

The column number of the last character of this Token.

Definition at line 32 of file Token.java.

The line number of the last character of this Token.

Definition at line 30 of file Token.java.

The string image of the token.

Definition at line 37 of file Token.java.

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.

Definition at line 23 of file Token.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.

Definition at line 47 of file Token.java.

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.

Definition at line 61 of file Token.java.


The documentation for this class was generated from the following file:
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