程序包 bsh
类 Token
java.lang.Object
bsh.Token
- 所有已实现的接口:
Serializable
Describes the input token stream.
- 另请参阅:
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字段概要
字段修饰符和类型字段说明int
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.int
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.int
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.int
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.The string image of the token.int
An integer that describes the kind of this token.A reference to the next regular (non-special) token from the input stream.This field is used to access special tokens that occur prior to this token, but after the immediately preceding regular (non-special) token. -
构造器概要
构造器 -
方法概要
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字段详细资料
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kind
public int kindAn 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. -
beginLine
public int beginLinebeginLine 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. -
beginColumn
public int beginColumnbeginLine 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. -
endLine
public int endLinebeginLine 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. -
endColumn
public int endColumnbeginLine 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
The string image of the token. -
next
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
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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构造器详细资料
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Token
public Token()
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方法详细资料
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toString
Returns the image. -
newToken
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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