| java.lang.Object
 org.openrdf.query.parser.serql.ast.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.
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). |
| Method Summary | |
| final public static Token | newToken(int ofKind)
Returns a new Token object, by default. | | 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.
|
| image | | public String image(Code) | | The string image of the token.
|
| 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.
|
| 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.
|
| 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.
|
| 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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