ADDITION_OP
public static final char ADDITION_OP
AT_SYMBOL
public static final char AT_SYMBOL
COLON
public static final char COLON
COMMA
public static final char COMMA
CR
public static final char CR
DOLLAR_SYMBOL
public static final char DOLLAR_SYMBOL
D_QUOTE
public static final char D_QUOTE
EQUALS_OP
public static final char EQUALS_OP
FORWARD_SLASH
public static final char FORWARD_SLASH
GREATER_THAN_OP
public static final char GREATER_THAN_OP
LESS_THAN_OP
public static final char LESS_THAN_OP
LF
public static final char LF
L_BRACKET
public static final char L_BRACKET
L_PAREN
public static final char L_PAREN
MULTIPLY_OP
public static final char MULTIPLY_OP
NEGATION_OP
public static final char NEGATION_OP
PERIOD
public static final char PERIOD
R_BRACKET
public static final char R_BRACKET
R_PAREN
public static final char R_PAREN
SPACE
public static final char SPACE
SUBTRACTION_OP
public static final char SUBTRACTION_OP
S_QUOTE
public static final char S_QUOTE
TAB
public static final char TAB
VERT_BAR
public static final char VERT_BAR
tokenSet
public static final Token[] tokenSet
the delimiter set of an ExprLexer
countTokens
public int countTokens()
Counts the number of times nextToken can be called without
returning null
hasMoreTokens
public boolean hasMoreTokens()
Determines if there are any tokens available
- true if there are tokens available, otherwise false
isAdditiveOp
public static boolean isAdditiveOp(Token token)
isAxisIdentifier
public static boolean isAxisIdentifier(Token token)
isBinaryOp
public static boolean isBinaryOp(Token token)
isDelimiter
public boolean isDelimiter(char ch)
Determines if the specified char is a delimiter
ch
- the char to compare to the delimiters
- true if the String argument is a delimiter
isDigit
public static boolean isDigit(char ch)
Returns true if the char argument is a digit
- true if the char argument is a digit
isEqualityOp
public static boolean isEqualityOp(Token token)
isLetter
public static boolean isLetter(char ch)
Returns true if the char argument is a letter
- true if the char argument is a letter
isMultiplicativeOp
public static boolean isMultiplicativeOp(Token token)
isNCNameChar
public static boolean isNCNameChar(char ch)
Returns true if the char argument is an NCNameChar,
as defined by the XML Namespaces recommendation
http://www.w3c.org/TR/1999/REC-xml-names-199904114
- true if the char argument is an NCNameChar
isOperator
public boolean isOperator(Token token)
isQNameChar
public static boolean isQNameChar(char ch)
Returns true if the char argument is an QName character,
as defined by the XML Namespaces recommendation
http://www.w3c.org/TR/1999/REC-xml-names-199904114
- true if the char argument is an QName character
isRelationalOp
public static boolean isRelationalOp(Token token)
isWhitespace
public static boolean isWhitespace(char ch)
lookAhead
public Token lookAhead(int offset)
throws IllegalArgumentException
Allows looking ahead for tokens without affecting the
token sequence as called by nextToken or previousToken.
If offset based on the next token, so an offset of 0 will
offset
- the number of tokens to lookAhead
- the next token
nextToken
public Token nextToken()
Retrieves the next available token
- the next available token or null if there are none
pushBack
public void pushBack()
Moves the position of this Lexer back one
resetPosition
public void resetPosition()
Resets the position of the token pointer to the beginning
toString
public String toString()
toStringPrevious
public String toStringPrevious()
toStringRemainder
public String toStringRemainder()