| java.lang.Object
 pnuts.lang.Token
| Token | | public class Token (Code) | | Describes the input token stream.
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| Field Summary | |
| public int | beginLinebeginColumnendLineendColumn
beginLine and beginColumn describe the position of the first character of
this token; endLine and endColumn describe the position of the last
character of this token. | | public String | image
The string image of the token. | | public int | kind
An integer that describes the kind of this token. | | public Token | next
A reference to the next regular (non-special) token from the input
stream. | | public Token | specialToken
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. |
| Method Summary | |
| final public static Token | newToken(int ofKind)
Returns a new Token object, by default. | | final public String | toString()
Returns the image. |
| beginLinebeginColumnendLineendColumn | | public int beginLinebeginColumnendLineendColumn(Code) | | beginLine and beginColumn describe the position of the first character of
this token; endLine and endColumn describe the position of the last
character of this token.
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| image | | public String image(Code) | | The string image of the token.
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| kind | | public int kind(Code) | | 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.
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| next | | public Token next(Code) | | 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.
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| specialToken | | public Token specialToken(Code) | | 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.
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| newToken | | final public static Token newToken(int ofKind)(Code) | | 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, simlpy add something like :
case MyParserConstants.ID : return new IDToken();
to the following switch statement. Then you can cast matchedToken
variable to the appropriate type and use it in your lexical actions.
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| toString | | final public String toString()(Code) | | Returns the image.
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