Token

java.lang.Object
- net.sf.saxon.expr.parser.Token

```
public abstract class Token
extends Object
```
This class holds static constants and methods defining the lexical tokens used in XPath and XQuery, and associated keywords.

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`AFTER` "after"
`static int`	`AND` Operator "and"
`static int`	`AS` "as" (in XQuery Update rename expression)
`static int`	`ASSIGN` ":=" symbol (XQuery only)
`static int`	`AT` At token, "@"
`static int`	`ATTRIBUTE_QNAME` composite token <'attribute' QNAME> (XQuery only)
`static int`	`AXIS` Token representing the name of an axis and the following "::" symbol
`static int`	`BANG` Operator "!"
`static int`	`BEFORE` "before"
`static int`	`CASE` Keyword "case"
`static int`	`CAST_AS` operator "cast as"
`static int`	`CASTABLE_AS` operator "castable as"
`static int`	`COLON` ":" (XPath 3.0 maps)
`static int`	`COLONCOLON` "::" symbol
`static int`	`COLONSTAR` ":*" symbol
`static int`	`COMMA` Comma token
`static int`	`CONCAT` Operator "\|\|"
`static int`	`COPY` "copy" keyword
`static int`	`COUNT` "copy" keyword
`static int`	`DECLARE_ANNOTATED` declare %
`static int`	`DECLARE_BASEURI` "declare base-uri"
`static int`	`DECLARE_BOUNDARY_SPACE` "declare boundary-space"
`static int`	`DECLARE_CONSTRUCTION` "declare construction"
`static int`	`DECLARE_CONTEXT` "declare context"
`static int`	`DECLARE_COPY_NAMESPACES` "declare copy-namespaces"
`static int`	`DECLARE_DECIMAL_FORMAT` "declare decimal-format"
`static int`	`DECLARE_DEFAULT` "declare default"
`static int`	`DECLARE_FUNCTION` "declare function"
`static int`	`DECLARE_NAMESPACE` "declare namespace"
`static int`	`DECLARE_OPTION` "declare option"
`static int`	`DECLARE_ORDERING` "declare xmlspace"
`static int`	`DECLARE_REVALIDATION` "declare revalidation"
`static int`	`DECLARE_UPDATING` "declare updating [function]"
`static int`	`DECLARE_VARIABLE` "declare variable"
`static int`	`DEFAULT` Keyword "default"
`static int`	`DELETE_NODE` "delete node/nodes"
`static int`	`DIV` Operator "div"
`static int`	`DOLLAR` "$" symbol
`static int`	`DOT` "." symbol
`static int`	`DOTDOT` ".." symbol
`static HashMap<String,Integer>`	`doubleKeywords` Lookup table for composite (two-keyword) tokens
`static int`	`ELEMENT_QNAME` composite token <'element' QNAME> (XQuery only)
`static int`	`ELSE` Keyword "else"
`static int`	`EOF` Pseudo-token representing the end of the expression
`static int`	`EQUALS` Equals token ("=")
`static int`	`EVERY` Keyword "every"
`static int`	`EXCEPT` Operator "except"
`static int`	`FEQ` operator "eq"
`static int`	`FGE` operator "ge"
`static int`	`FGT` operator "gt"
`static int`	`FIRST_INTO` "first into"
`static int`	`FLE` opeartor "le"
`static int`	`FLT` operator "lt"
`static int`	`FNE` operator "ne"
`static int`	`FOLLOWS` Operator ">>"
`static int`	`FOR` "for" keyword
`static int`	`FOR_SLIDING` "for sliding" (XQuery 3.0)
`static int`	`FOR_TUMBLING` "for tumbling" (XQuery 3.0)
`static int`	`FUNCTION` Token representing the name of a function and the following "(" symbol
`static int`	`GE` Operator ">="
`static int`	`GROUP_BY`
`static int`	`GT` Operator ">"
`static int`	`HASH` # symbol
`static int`	`IDIV` operator "idiv"
`static int`	`IF` Keyword "if"
`static int`	`IMPORT_MODULE` "import module"
`static int`	`IMPORT_SCHEMA` "import schema"
`static int`	`IN` Keyword "in"
`static int`	`INLINE_FUNCTION_LITERAL` Token representing a function name and the following "#" symbol
`static int`	`INSERT_NODE` "insert node/nodes"
`static int`	`INSTANCE_OF` operator "instance of"
`static int`	`INTERSECT` Operator "intersect"
`static int`	`INTO` "into"
`static int`	`IS` Operator "is"
`static int`	`KEYWORD_CURLY` composite token: (XQuery only)
`static int`	`LAST_INTO` "last into"
`static int`	`LCURLY` "{" symbol (XQuery only)
`static int`	`LE` Operator "<="
`static int`	`LET` "let" keyword (XQuery only)
`static int`	`LPAR` Left parenthesis
`static int`	`LSQB` Left square bracket
`static int`	`LT` Operator "<"
`static int`	`MINUS` Binary minus operator
`static int`	`MOD` Operator "mod"
`static int`	`MODIFY` Keyword "modify"
`static int`	`MODULE_NAMESPACE` "module namespace"
`static int`	`MULT` Multiply operator, "*" when used in an operator context
`static int`	`NAME` Name token (a QName, in general)
`static int`	`NAMESPACE_QNAME` composite token <'namespace' QNAME> (XQuery only)
`static int`	`NE` Operator not-equals.
`static int`	`NEGATE` Unary minus sign
`static int`	`NODEKIND` Node kind, e.g.
`static int`	`NUMBER` Numeric literal
`static int`	`OR` Operator "or"
`static int`	`PERCENT` percent sign '%'
`static int`	`PI_QNAME` composite token <'pi' QNAME> (XQuery only)
`static int`	`PLUS` Operator "+"
`static int`	`PRAGMA` A token representing an XQuery pragma.
`static int`	`PRECEDES` Operator "<<"
`static int`	`PREFIX` "prefix:*" token
`static int`	`QMARK` Question mark symbol.
`static int`	`RCURLY` "}" symbol (XQuery only)
`static int`	`RENAME_NODE` "rename node"
`static int`	`REPLACE_NODE` "replace node/nodes"
`static int`	`REPLACE_VALUE` "replace value"
`static int`	`RETURN` Keyword "return"
`static int`	`RPAR` Right parenthesis
`static int`	`RSQB` Right square bracket
`static int`	`SATISFIES` Keyword "satisfies"
`static int`	`SEMICOLON` semicolon separator
`static int`	`SLASH` Forwards "/"
`static int`	`SLASH_SLASH` Double forwards slash, "//"
`static int`	`SOME` Keyword "some"
`static int`	`STAR` "*" symbol when used as a wildcard
`static int`	`STRING_LITERAL` String literal
`static int`	`SUFFIX` "*:" token
`static int`	`SWITCH` Keyword "switch" (XQuery 1.1)
`static int`	`TAG` "<" at the start of a tag (XQuery only).
`static int`	`THEN` Ketword "then"
`static int`	`TILDE` Tilde, used in XSLT patterns
`static int`	`TO` Operator "to"
`static String[]`	`tokens` The following strings are used to represent tokens in error messages
`static int`	`TREAT_AS` operator "treat as"
`static int`	`TYPESWITCH` Keyword "typeswitch"
`static int`	`UNION` "union" or "\|" token
`static int`	`UNKNOWN` Pseudo-token representing the start of the expression
`static int`	`VALIDATE` Various compound symbols supporting XQuery validation expression
`static int`	`VALIDATE_LAX`
`static int`	`VALIDATE_STRICT`
`static int`	`VALIDATE_TYPE`
`static int`	`WHERE` Keyword "where"
`static int`	`WITH` "with"
`static int`	`XQUERY_ENCODING` "xquery encoding"
`static int`	`XQUERY_VERSION` "xquery version"

Method Summary

Methods
Modifier and Type	Method and Description
`static int`	`inverse(int operator)` Return the inverse of a relational operator, so that "a op b" can be rewritten as "b inverse(op) a"
`static boolean`	`isOrderedOperator(int operator)`
`static int`	`negate(int operator)` Return the negation of a relational operator, so that "a op b" can be rewritten as not(b op' a)

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - EOF
```
public static final int EOF
```
    Pseudo-token representing the end of the expression
    
    See Also:
    Constant Field Values
  - UNION
```
public static final int UNION
```
    "union" or "|" token
    
    See Also:
    Constant Field Values
  - SLASH
```
public static final int SLASH
```
    Forwards "/"
    
    See Also:
    Constant Field Values
  - AT
```
public static final int AT
```
    At token, "@"
    
    See Also:
    Constant Field Values
  - LSQB
```
public static final int LSQB
```
    Left square bracket
    
    See Also:
    Constant Field Values
  - LPAR
```
public static final int LPAR
```
    Left parenthesis
    
    See Also:
    Constant Field Values
  - EQUALS
```
public static final int EQUALS
```
    Equals token ("=")
    
    See Also:
    Constant Field Values
  - COMMA
```
public static final int COMMA
```
    Comma token
    
    See Also:
    Constant Field Values
  - SLASH_SLASH
```
public static final int SLASH_SLASH
```
    Double forwards slash, "//"
    
    See Also:
    Constant Field Values
  - OR
```
public static final int OR
```
    Operator "or"
    
    See Also:
    Constant Field Values
  - AND
```
public static final int AND
```
    Operator "and"
    
    See Also:
    Constant Field Values
  - GT
```
public static final int GT
```
    Operator ">"
    
    See Also:
    Constant Field Values
  - LT
```
public static final int LT
```
    Operator "<"
    
    See Also:
    Constant Field Values
  - GE
```
public static final int GE
```
    Operator ">="
    
    See Also:
    Constant Field Values
  - LE
```
public static final int LE
```
    Operator "<="
    
    See Also:
    Constant Field Values
  - PLUS
```
public static final int PLUS
```
    Operator "+"
    
    See Also:
    Constant Field Values
  - MINUS
```
public static final int MINUS
```
    Binary minus operator
    
    See Also:
    Constant Field Values
  - MULT
```
public static final int MULT
```
    Multiply operator, "*" when used in an operator context
    
    See Also:
    Constant Field Values
  - DIV
```
public static final int DIV
```
    Operator "div"
    
    See Also:
    Constant Field Values
  - MOD
```
public static final int MOD
```
    Operator "mod"
    
    See Also:
    Constant Field Values
  - IS
```
public static final int IS
```
    Operator "is"
    
    See Also:
    Constant Field Values
  - DOLLAR
```
public static final int DOLLAR
```
    "$" symbol
    
    See Also:
    Constant Field Values
  - NE
```
public static final int NE
```
    Operator not-equals. That is, "!="
    
    See Also:
    Constant Field Values
  - INTERSECT
```
public static final int INTERSECT
```
    Operator "intersect"
    
    See Also:
    Constant Field Values
  - EXCEPT
```
public static final int EXCEPT
```
    Operator "except"
    
    See Also:
    Constant Field Values
  - RETURN
```
public static final int RETURN
```
    Keyword "return"
    
    See Also:
    Constant Field Values
  - THEN
```
public static final int THEN
```
    Ketword "then"
    
    See Also:
    Constant Field Values
  - ELSE
```
public static final int ELSE
```
    Keyword "else"
    
    See Also:
    Constant Field Values
  - WHERE
```
public static final int WHERE
```
    Keyword "where"
    
    See Also:
    Constant Field Values
  - TO
```
public static final int TO
```
    Operator "to"
    
    See Also:
    Constant Field Values
  - CONCAT
```
public static final int CONCAT
```
    Operator "||"
    
    See Also:
    Constant Field Values
  - IN
```
public static final int IN
```
    Keyword "in"
    
    See Also:
    Constant Field Values
  - SOME
```
public static final int SOME
```
    Keyword "some"
    
    See Also:
    Constant Field Values
  - EVERY
```
public static final int EVERY
```
    Keyword "every"
    
    See Also:
    Constant Field Values
  - SATISFIES
```
public static final int SATISFIES
```
    Keyword "satisfies"
    
    See Also:
    Constant Field Values
  - FUNCTION
```
public static final int FUNCTION
```
    Token representing the name of a function and the following "(" symbol
    
    See Also:
    Constant Field Values
  - AXIS
```
public static final int AXIS
```
    Token representing the name of an axis and the following "::" symbol
    
    See Also:
    Constant Field Values
  - IF
```
public static final int IF
```
    Keyword "if"
    
    See Also:
    Constant Field Values
  - PRECEDES
```
public static final int PRECEDES
```
    Operator "<<"
    
    See Also:
    Constant Field Values
  - FOLLOWS
```
public static final int FOLLOWS
```
    Operator ">>"
    
    See Also:
    Constant Field Values
  - BANG
```
public static final int BANG
```
    Operator "!"
    
    See Also:
    Constant Field Values
  - COLONCOLON
```
public static final int COLONCOLON
```
    "::" symbol
    
    See Also:
    Constant Field Values
  - COLONSTAR
```
public static final int COLONSTAR
```
    ":*" symbol
    
    See Also:
    Constant Field Values
  - INLINE_FUNCTION_LITERAL
```
public static final int INLINE_FUNCTION_LITERAL
```
    Token representing a function name and the following "#" symbol
    
    See Also:
    Constant Field Values
  - HASH
```
public static final int HASH
```
    # symbol
    
    See Also:
    Constant Field Values
  - INSTANCE_OF
```
public static final int INSTANCE_OF
```
    operator "instance of"
    
    See Also:
    Constant Field Values
  - CAST_AS
```
public static final int CAST_AS
```
    operator "cast as"
    
    See Also:
    Constant Field Values
  - TREAT_AS
```
public static final int TREAT_AS
```
    operator "treat as"
    
    See Also:
    Constant Field Values
  - TILDE
```
public static final int TILDE
```
    Tilde, used in XSLT patterns
    
    See Also:
    Constant Field Values
  - FEQ
```
public static final int FEQ
```
    operator "eq"
    
    See Also:
    Constant Field Values
  - FNE
```
public static final int FNE
```
    operator "ne"
    
    See Also:
    Constant Field Values
  - FGT
```
public static final int FGT
```
    operator "gt"
    
    See Also:
    Constant Field Values
  - FLT
```
public static final int FLT
```
    operator "lt"
    
    See Also:
    Constant Field Values
  - FGE
```
public static final int FGE
```
    operator "ge"
    
    See Also:
    Constant Field Values
  - FLE
```
public static final int FLE
```
    opeartor "le"
    
    See Also:
    Constant Field Values
  - IDIV
```
public static final int IDIV
```
    operator "idiv"
    
    See Also:
    Constant Field Values
  - CASTABLE_AS
```
public static final int CASTABLE_AS
```
    operator "castable as"
    
    See Also:
    Constant Field Values
  - ASSIGN
```
public static final int ASSIGN
```
    ":=" symbol (XQuery only)
    
    See Also:
    Constant Field Values
  - LCURLY
```
public static final int LCURLY
```
    "{" symbol (XQuery only)
    
    See Also:
    Constant Field Values
  - KEYWORD_CURLY
```
public static final int KEYWORD_CURLY
```
    composite token: (XQuery only)
    
    See Also:
    Constant Field Values
  - ELEMENT_QNAME
```
public static final int ELEMENT_QNAME
```
    composite token <'element' QNAME> (XQuery only)
    
    See Also:
    Constant Field Values
  - ATTRIBUTE_QNAME
```
public static final int ATTRIBUTE_QNAME
```
    composite token <'attribute' QNAME> (XQuery only)
    
    See Also:
    Constant Field Values
  - PI_QNAME
```
public static final int PI_QNAME
```
    composite token <'pi' QNAME> (XQuery only)
    
    See Also:
    Constant Field Values
  - NAMESPACE_QNAME
```
public static final int NAMESPACE_QNAME
```
    composite token <'namespace' QNAME> (XQuery only)
    
    See Also:
    Constant Field Values
  - TYPESWITCH
```
public static final int TYPESWITCH
```
    Keyword "typeswitch"
    
    See Also:
    Constant Field Values
  - SWITCH
```
public static final int SWITCH
```
    Keyword "switch" (XQuery 1.1)
    
    See Also:
    Constant Field Values
  - CASE
```
public static final int CASE
```
    Keyword "case"
    
    See Also:
    Constant Field Values
  - MODIFY
```
public static final int MODIFY
```
    Keyword "modify"
    
    See Also:
    Constant Field Values
  - NODEKIND
```
public static final int NODEKIND
```
    Node kind, e.g. "node()" or "comment()"
    
    See Also:
    Constant Field Values
  - SUFFIX
```
public static final int SUFFIX
```
    "*:" token
    
    See Also:
    Constant Field Values
  - AS
```
public static final int AS
```
    "as" (in XQuery Update rename expression)
    
    See Also:
    Constant Field Values
  - GROUP_BY
```
public static final int GROUP_BY
```
    See Also:
    Constant Field Values
  - FOR_TUMBLING
```
public static final int FOR_TUMBLING
```
    "for tumbling" (XQuery 3.0)
    
    See Also:
    Constant Field Values
  - FOR_SLIDING
```
public static final int FOR_SLIDING
```
    "for sliding" (XQuery 3.0)
    
    See Also:
    Constant Field Values
  - COLON
```
public static final int COLON
```
    ":" (XPath 3.0 maps)
    
    See Also:
    Constant Field Values
  - XQUERY_VERSION
```
public static final int XQUERY_VERSION
```
    "xquery version"
    
    See Also:
    Constant Field Values
  - XQUERY_ENCODING
```
public static final int XQUERY_ENCODING
```
    "xquery encoding"
    
    See Also:
    Constant Field Values
  - DECLARE_NAMESPACE
```
public static final int DECLARE_NAMESPACE
```
    "declare namespace"
    
    See Also:
    Constant Field Values
  - DECLARE_DEFAULT
```
public static final int DECLARE_DEFAULT
```
    "declare default"
    
    See Also:
    Constant Field Values
  - DECLARE_CONSTRUCTION
```
public static final int DECLARE_CONSTRUCTION
```
    "declare construction"
    
    See Also:
    Constant Field Values
  - DECLARE_BASEURI
```
public static final int DECLARE_BASEURI
```
    "declare base-uri"
    
    See Also:
    Constant Field Values
  - DECLARE_BOUNDARY_SPACE
```
public static final int DECLARE_BOUNDARY_SPACE
```
    "declare boundary-space"
    
    See Also:
    Constant Field Values
  - DECLARE_DECIMAL_FORMAT
```
public static final int DECLARE_DECIMAL_FORMAT
```
    "declare decimal-format"
    
    See Also:
    Constant Field Values
  - IMPORT_SCHEMA
```
public static final int IMPORT_SCHEMA
```
    "import schema"
    
    See Also:
    Constant Field Values
  - IMPORT_MODULE
```
public static final int IMPORT_MODULE
```
    "import module"
    
    See Also:
    Constant Field Values
  - DECLARE_VARIABLE
```
public static final int DECLARE_VARIABLE
```
    "declare variable"
    
    See Also:
    Constant Field Values
  - DECLARE_CONTEXT
```
public static final int DECLARE_CONTEXT
```
    "declare context"
    
    See Also:
    Constant Field Values
  - DECLARE_FUNCTION
```
public static final int DECLARE_FUNCTION
```
    "declare function"
    
    See Also:
    Constant Field Values
  - MODULE_NAMESPACE
```
public static final int MODULE_NAMESPACE
```
    "module namespace"
    
    See Also:
    Constant Field Values
  - VALIDATE
```
public static final int VALIDATE
```
    Various compound symbols supporting XQuery validation expression
    
    See Also:
    Constant Field Values
  - VALIDATE_STRICT
```
public static final int VALIDATE_STRICT
```
    See Also:
    Constant Field Values
  - VALIDATE_LAX
```
public static final int VALIDATE_LAX
```
    See Also:
    Constant Field Values
  - VALIDATE_TYPE
```
public static final int VALIDATE_TYPE
```
    See Also:
    Constant Field Values
  - PERCENT
```
public static final int PERCENT
```
    percent sign '%'
    
    See Also:
    Constant Field Values
  - DECLARE_ORDERING
```
public static final int DECLARE_ORDERING
```
    "declare xmlspace"
    
    See Also:
    Constant Field Values
  - DECLARE_COPY_NAMESPACES
```
public static final int DECLARE_COPY_NAMESPACES
```
    "declare copy-namespaces"
    
    See Also:
    Constant Field Values
  - DECLARE_OPTION
```
public static final int DECLARE_OPTION
```
    "declare option"
    
    See Also:
    Constant Field Values
  - DECLARE_REVALIDATION
```
public static final int DECLARE_REVALIDATION
```
    "declare revalidation"
    
    See Also:
    Constant Field Values
  - INSERT_NODE
```
public static final int INSERT_NODE
```
    "insert node/nodes"
    
    See Also:
    Constant Field Values
  - DELETE_NODE
```
public static final int DELETE_NODE
```
    "delete node/nodes"
    
    See Also:
    Constant Field Values
  - REPLACE_NODE
```
public static final int REPLACE_NODE
```
    "replace node/nodes"
    
    See Also:
    Constant Field Values
  - REPLACE_VALUE
```
public static final int REPLACE_VALUE
```
    "replace value"
    
    See Also:
    Constant Field Values
  - RENAME_NODE
```
public static final int RENAME_NODE
```
    "rename node"
    
    See Also:
    Constant Field Values
  - FIRST_INTO
```
public static final int FIRST_INTO
```
    "first into"
    
    See Also:
    Constant Field Values
  - LAST_INTO
```
public static final int LAST_INTO
```
    "last into"
    
    See Also:
    Constant Field Values
  - AFTER
```
public static final int AFTER
```
    "after"
    
    See Also:
    Constant Field Values
  - BEFORE
```
public static final int BEFORE
```
    "before"
    
    See Also:
    Constant Field Values
  - INTO
```
public static final int INTO
```
    "into"
    
    See Also:
    Constant Field Values
  - WITH
```
public static final int WITH
```
    "with"
    
    See Also:
    Constant Field Values
  - DECLARE_UPDATING
```
public static final int DECLARE_UPDATING
```
    "declare updating [function]"
    
    See Also:
    Constant Field Values
  - DECLARE_ANNOTATED
```
public static final int DECLARE_ANNOTATED
```
    declare %
    
    See Also:
    Constant Field Values
  - SEMICOLON
```
public static final int SEMICOLON
```
    semicolon separator
    
    See Also:
    Constant Field Values
  - NAME
```
public static final int NAME
```
    Name token (a QName, in general)
    
    See Also:
    Constant Field Values
  - STRING_LITERAL
```
public static final int STRING_LITERAL
```
    String literal
    
    See Also:
    Constant Field Values
  - RSQB
```
public static final int RSQB
```
    Right square bracket
    
    See Also:
    Constant Field Values
  - RPAR
```
public static final int RPAR
```
    Right parenthesis
    
    See Also:
    Constant Field Values
  - DOT
```
public static final int DOT
```
    "." symbol
    
    See Also:
    Constant Field Values
  - DOTDOT
```
public static final int DOTDOT
```
    ".." symbol
    
    See Also:
    Constant Field Values
  - STAR
```
public static final int STAR
```
    "*" symbol when used as a wildcard
    
    See Also:
    Constant Field Values
  - PREFIX
```
public static final int PREFIX
```
    "prefix:*" token
    
    See Also:
    Constant Field Values
  - NUMBER
```
public static final int NUMBER
```
    Numeric literal
    
    See Also:
    Constant Field Values
  - FOR
```
public static final int FOR
```
    "for" keyword
    
    See Also:
    Constant Field Values
  - DEFAULT
```
public static final int DEFAULT
```
    Keyword "default"
    
    See Also:
    Constant Field Values
  - QMARK
```
public static final int QMARK
```
    Question mark symbol. That is, "?"
    
    See Also:
    Constant Field Values
  - RCURLY
```
public static final int RCURLY
```
    "}" symbol (XQuery only)
    
    See Also:
    Constant Field Values
  - LET
```
public static final int LET
```
    "let" keyword (XQuery only)
    
    See Also:
    Constant Field Values
  - TAG
```
public static final int TAG
```
    "<" at the start of a tag (XQuery only). The pseudo-XML syntax that follows is read character-by-character by the XQuery parser
    
    See Also:
    Constant Field Values
  - PRAGMA
```
public static final int PRAGMA
```
    A token representing an XQuery pragma. This construct "(# .... #)" is regarded as a single token, for the QueryParser to sort out.
    
    See Also:
    Constant Field Values
  - COPY
```
public static final int COPY
```
    "copy" keyword
    
    See Also:
    Constant Field Values
  - COUNT
```
public static final int COUNT
```
    "copy" keyword
    
    See Also:
    Constant Field Values
  - NEGATE
```
public static final int NEGATE
```
    Unary minus sign
    
    See Also:
    Constant Field Values
  - tokens
```
public static final String[] tokens
```
    The following strings are used to represent tokens in error messages
  - doubleKeywords
```
public static HashMap<String,Integer> doubleKeywords
```
    Lookup table for composite (two-keyword) tokens
  - UNKNOWN
```
public static final int UNKNOWN
```
    Pseudo-token representing the start of the expression
    
    See Also:
    Constant Field Values
- Method Detail
  - inverse
```
public static int inverse(int operator)
```
    Return the inverse of a relational operator, so that "a op b" can be rewritten as "b inverse(op) a"
    
    Parameters:
    operator - the operator whose inverse is required
    
    Returns:
    the inverse operator
  - negate
```
public static int negate(int operator)
```
    Return the negation of a relational operator, so that "a op b" can be rewritten as not(b op' a)
    
    Parameters:
    operator - the operator to be negated
    
    Returns:
    the negated operator
  - isOrderedOperator
```
public static boolean isOrderedOperator(int operator)
```

Class Token

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

EOF

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