com.Ostermiller.Syntax.Lexer
Class JavaScriptToken

java.lang.Object
  com.Ostermiller.Syntax.Lexer.Token
      com.Ostermiller.Syntax.Lexer.JavaScriptToken

public class JavaScriptToken
extends Token

A JavaScriptToken is a token that is returned by a lexer that is lexing a javascript source file. It has several attributes describing the token: The type of token, the text of the token, the line number on which it occurred, the number of characters into the input at which it started, and similarly, the number of characters into the input at which it ended.
The tokens should comply with the Java Script Reference.

Field Summary

static int	COMMENT_DOCUMENTATION
static int	COMMENT_END_OF_LINE
static int	COMMENT_TRADITIONAL
static int	ERROR_DOUBLE_SIZE
static int	ERROR_FLOAT
static int	ERROR_FLOAT_SIZE
static int	ERROR_IDENTIFIER
static int	ERROR_INTEGER_DECIMIAL_SIZE
static int	ERROR_INTEGER_HEXIDECIMAL_SIZE
static int	ERROR_INTEGER_OCTAL_SIZE
static int	ERROR_LONG_DECIMIAL_SIZE
static int	ERROR_LONG_HEXIDECIMAL_SIZE
static int	ERROR_LONG_OCTAL_SIZE
static int	ERROR_MALFORMED_CHARACTER
static int	ERROR_MALFORMED_STRING
static int	ERROR_MALFORMED_UNCLOSED_CHARACTER
static int	ERROR_MALFORMED_UNCLOSED_STRING
static int	ERROR_UNCLOSED_CHARACTER
static int	ERROR_UNCLOSED_COMMENT
static int	ERROR_UNCLOSED_STRING
static int	IDENTIFIER
static int	LITERAL_BOOLEAN
static int	LITERAL_CHARACTER
static int	LITERAL_DOUBLE
static int	LITERAL_FLOATING_POINT
static int	LITERAL_INTEGER_DECIMAL
static int	LITERAL_INTEGER_HEXIDECIMAL
static int	LITERAL_INTEGER_OCTAL
static int	LITERAL_LONG_DECIMAL
static int	LITERAL_LONG_HEXIDECIMAL
static int	LITERAL_LONG_OCTAL
static int	LITERAL_NULL
static int	LITERAL_STRING
static int	OPERATOR_ADD
static int	OPERATOR_ADD_ASSIGN
static int	OPERATOR_ASSIGN
static int	OPERATOR_BITWISE_AND
static int	OPERATOR_BITWISE_AND_ASSIGN
static int	OPERATOR_BITWISE_COMPLIMENT
static int	OPERATOR_BITWISE_OR
static int	OPERATOR_BITWISE_OR_ASSIGN
static int	OPERATOR_BITWISE_XOR
static int	OPERATOR_BITWISE_XOR_ASSIGN
static int	OPERATOR_COLON
static int	OPERATOR_DECREMENT
static int	OPERATOR_DIVIDE
static int	OPERATOR_DIVIDE_ASSIGN
static int	OPERATOR_EQUAL
static int	OPERATOR_GREATER_THAN
static int	OPERATOR_GREATER_THAN_OR_EQUAL
static int	OPERATOR_INCREMENT
static int	OPERATOR_LESS_THAN
static int	OPERATOR_LESS_THAN_OR_EQUAL
static int	OPERATOR_LOGICAL_AND
static int	OPERATOR_LOGICAL_NOT
static int	OPERATOR_LOGICAL_OR
static int	OPERATOR_MOD
static int	OPERATOR_MOD_ASSIGN
static int	OPERATOR_MULTIPLY
static int	OPERATOR_MULTIPLY_ASSIGN
static int	OPERATOR_NOT_EQUAL
static int	OPERATOR_QUESTION
static int	OPERATOR_SHIFT_LEFT
static int	OPERATOR_SHIFT_LEFT_ASSIGN
static int	OPERATOR_SHIFT_RIGHT
static int	OPERATOR_SHIFT_RIGHT_ASSIGN
static int	OPERATOR_SHIFT_RIGHT_UNSIGNED
static int	OPERATOR_SHIFT_RIGHT_UNSIGNED_ASSIGN
static int	OPERATOR_SUBTRACT
static int	OPERATOR_SUBTRACT_ASSIGN
static int	RESERVED_WORD_ABSTRACT
static int	RESERVED_WORD_BOOLEAN
static int	RESERVED_WORD_BREAK
static int	RESERVED_WORD_BYTE
static int	RESERVED_WORD_CASE
static int	RESERVED_WORD_CATCH
static int	RESERVED_WORD_CHAR
static int	RESERVED_WORD_CLASS
static int	RESERVED_WORD_CONST
static int	RESERVED_WORD_CONTINUE
static int	RESERVED_WORD_DEFAULT
static int	RESERVED_WORD_DO
static int	RESERVED_WORD_DOUBLE
static int	RESERVED_WORD_ELSE
static int	RESERVED_WORD_EXTENDS
static int	RESERVED_WORD_FALSE
static int	RESERVED_WORD_FINAL
static int	RESERVED_WORD_FINALLY
static int	RESERVED_WORD_FLOAT
static int	RESERVED_WORD_FOR
static int	RESERVED_WORD_FUNCTION
static int	RESERVED_WORD_GOTO
static int	RESERVED_WORD_IF
static int	RESERVED_WORD_IMPLEMENTS
static int	RESERVED_WORD_IMPORT
static int	RESERVED_WORD_IN
static int	RESERVED_WORD_INSTANCEOF
static int	RESERVED_WORD_INT
static int	RESERVED_WORD_INTERFACE
static int	RESERVED_WORD_LONG
static int	RESERVED_WORD_NATIVE
static int	RESERVED_WORD_NEW
static int	RESERVED_WORD_NULL
static int	RESERVED_WORD_PACKAGE
static int	RESERVED_WORD_PRIVATE
static int	RESERVED_WORD_PROTECTED
static int	RESERVED_WORD_PUBLIC
static int	RESERVED_WORD_RETURN
static int	RESERVED_WORD_SHORT
static int	RESERVED_WORD_STATIC
static int	RESERVED_WORD_SUPER
static int	RESERVED_WORD_SWITCH
static int	RESERVED_WORD_SYNCHRONIZED
static int	RESERVED_WORD_THIS
static int	RESERVED_WORD_THROW
static int	RESERVED_WORD_THROWS
static int	RESERVED_WORD_TRANSIENT
static int	RESERVED_WORD_TRUE
static int	RESERVED_WORD_TRY
static int	RESERVED_WORD_VAR
static int	RESERVED_WORD_VOID
static int	RESERVED_WORD_WHILE
static int	RESERVED_WORD_WITH
static int	SEPARATOR_COMMA
static int	SEPARATOR_LBRACE
static int	SEPARATOR_LBRACKET
static int	SEPARATOR_LPAREN
static int	SEPARATOR_PERIOD
static int	SEPARATOR_RBRACE
static int	SEPARATOR_RBRACKET
static int	SEPARATOR_RPAREN
static int	SEPARATOR_SEMICOLON
static int	WHITE_SPACE

Fields inherited from class com.Ostermiller.Syntax.Lexer.Token

INITIAL_STATE, UNDEFINED_STATE

Constructor Summary

JavaScriptToken(int ID, String contents, int lineNumber, int charBegin, int charEnd)
Create a new token.

JavaScriptToken(int ID, String contents, int lineNumber, int charBegin, int charEnd, int state)
Create a new token.

Method Summary

String	errorString() get a String that explains the error, if this token is an error.
int	getCharBegin() get the offset into the input in characters at which this token started
int	getCharEnd() get the offset into the input in characters at which this token ended
String	getContents() get the contents of this token
String	getDescription() A description of this token.
int	getID() get the ID number of this token
int	getLineNumber() get the line number of the input on which this token started
int	getState() Get an integer representing the state the tokenizer is in after returning this token.
boolean	isComment() Checks this token to see if it is a comment.
boolean	isError() Checks this token to see if it is an Error.
boolean	isIdentifier() Checks this token to see if it is an identifier.
boolean	isLiteral() Checks this token to see if it is a literal.
boolean	isOperator() Checks this token to see if it is a Operator.
boolean	isReservedWord() Checks this token to see if it is a reserved word.
boolean	isSeparator() Checks this token to see if it is a Separator.
boolean	isWhiteSpace() Checks this token to see if it is White Space.
String	toString() get a representation of this token as a human readable string.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

RESERVED_WORD_ABSTRACT

public static final int RESERVED_WORD_ABSTRACT

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RESERVED_WORD_BOOLEAN

public static final int RESERVED_WORD_BOOLEAN

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RESERVED_WORD_BREAK

public static final int RESERVED_WORD_BREAK

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RESERVED_WORD_BYTE

public static final int RESERVED_WORD_BYTE

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RESERVED_WORD_CASE

public static final int RESERVED_WORD_CASE

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RESERVED_WORD_CATCH

public static final int RESERVED_WORD_CATCH

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RESERVED_WORD_CHAR

public static final int RESERVED_WORD_CHAR

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RESERVED_WORD_CLASS

public static final int RESERVED_WORD_CLASS

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RESERVED_WORD_CONST

public static final int RESERVED_WORD_CONST

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RESERVED_WORD_CONTINUE

public static final int RESERVED_WORD_CONTINUE

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RESERVED_WORD_DEFAULT

public static final int RESERVED_WORD_DEFAULT

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RESERVED_WORD_DO

public static final int RESERVED_WORD_DO

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RESERVED_WORD_DOUBLE

public static final int RESERVED_WORD_DOUBLE

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RESERVED_WORD_ELSE

public static final int RESERVED_WORD_ELSE

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RESERVED_WORD_EXTENDS

public static final int RESERVED_WORD_EXTENDS

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RESERVED_WORD_FALSE

public static final int RESERVED_WORD_FALSE

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RESERVED_WORD_FINAL

public static final int RESERVED_WORD_FINAL

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RESERVED_WORD_FINALLY

public static final int RESERVED_WORD_FINALLY

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RESERVED_WORD_FLOAT

public static final int RESERVED_WORD_FLOAT

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RESERVED_WORD_FOR

public static final int RESERVED_WORD_FOR

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RESERVED_WORD_FUNCTION

public static final int RESERVED_WORD_FUNCTION

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RESERVED_WORD_GOTO

public static final int RESERVED_WORD_GOTO

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RESERVED_WORD_IF

public static final int RESERVED_WORD_IF

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RESERVED_WORD_IMPLEMENTS

public static final int RESERVED_WORD_IMPLEMENTS

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RESERVED_WORD_IMPORT

public static final int RESERVED_WORD_IMPORT

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RESERVED_WORD_IN

public static final int RESERVED_WORD_IN

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RESERVED_WORD_INSTANCEOF

public static final int RESERVED_WORD_INSTANCEOF

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RESERVED_WORD_INT

public static final int RESERVED_WORD_INT

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RESERVED_WORD_INTERFACE

public static final int RESERVED_WORD_INTERFACE

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RESERVED_WORD_LONG

public static final int RESERVED_WORD_LONG

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RESERVED_WORD_NATIVE

public static final int RESERVED_WORD_NATIVE

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RESERVED_WORD_NEW

public static final int RESERVED_WORD_NEW

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RESERVED_WORD_NULL

public static final int RESERVED_WORD_NULL

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RESERVED_WORD_PACKAGE

public static final int RESERVED_WORD_PACKAGE

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RESERVED_WORD_PRIVATE

public static final int RESERVED_WORD_PRIVATE

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RESERVED_WORD_PROTECTED

public static final int RESERVED_WORD_PROTECTED

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RESERVED_WORD_PUBLIC

public static final int RESERVED_WORD_PUBLIC

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RESERVED_WORD_RETURN

public static final int RESERVED_WORD_RETURN

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RESERVED_WORD_SHORT

public static final int RESERVED_WORD_SHORT

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RESERVED_WORD_STATIC

public static final int RESERVED_WORD_STATIC

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RESERVED_WORD_SUPER

public static final int RESERVED_WORD_SUPER

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RESERVED_WORD_SWITCH

public static final int RESERVED_WORD_SWITCH

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RESERVED_WORD_SYNCHRONIZED

public static final int RESERVED_WORD_SYNCHRONIZED

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RESERVED_WORD_THIS

public static final int RESERVED_WORD_THIS

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RESERVED_WORD_THROW

public static final int RESERVED_WORD_THROW

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RESERVED_WORD_THROWS

public static final int RESERVED_WORD_THROWS

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RESERVED_WORD_TRANSIENT

public static final int RESERVED_WORD_TRANSIENT

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RESERVED_WORD_TRUE

public static final int RESERVED_WORD_TRUE

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RESERVED_WORD_TRY

public static final int RESERVED_WORD_TRY

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RESERVED_WORD_VAR

public static final int RESERVED_WORD_VAR

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RESERVED_WORD_VOID

public static final int RESERVED_WORD_VOID

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RESERVED_WORD_WHILE

public static final int RESERVED_WORD_WHILE

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RESERVED_WORD_WITH

public static final int RESERVED_WORD_WITH

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IDENTIFIER

public static final int IDENTIFIER

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LITERAL_BOOLEAN

public static final int LITERAL_BOOLEAN

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LITERAL_INTEGER_DECIMAL

public static final int LITERAL_INTEGER_DECIMAL

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LITERAL_INTEGER_OCTAL

public static final int LITERAL_INTEGER_OCTAL

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LITERAL_INTEGER_HEXIDECIMAL

public static final int LITERAL_INTEGER_HEXIDECIMAL

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LITERAL_LONG_DECIMAL

public static final int LITERAL_LONG_DECIMAL

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LITERAL_LONG_OCTAL

public static final int LITERAL_LONG_OCTAL

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LITERAL_LONG_HEXIDECIMAL

public static final int LITERAL_LONG_HEXIDECIMAL

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LITERAL_FLOATING_POINT

public static final int LITERAL_FLOATING_POINT

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LITERAL_DOUBLE

public static final int LITERAL_DOUBLE

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LITERAL_CHARACTER

public static final int LITERAL_CHARACTER

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LITERAL_STRING

public static final int LITERAL_STRING

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LITERAL_NULL

public static final int LITERAL_NULL

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SEPARATOR_LPAREN

public static final int SEPARATOR_LPAREN

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SEPARATOR_RPAREN

public static final int SEPARATOR_RPAREN

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SEPARATOR_LBRACE

public static final int SEPARATOR_LBRACE

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SEPARATOR_RBRACE

public static final int SEPARATOR_RBRACE

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SEPARATOR_LBRACKET

public static final int SEPARATOR_LBRACKET

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SEPARATOR_RBRACKET

public static final int SEPARATOR_RBRACKET

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SEPARATOR_SEMICOLON

public static final int SEPARATOR_SEMICOLON

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SEPARATOR_COMMA

public static final int SEPARATOR_COMMA

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SEPARATOR_PERIOD

public static final int SEPARATOR_PERIOD

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OPERATOR_GREATER_THAN

public static final int OPERATOR_GREATER_THAN

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OPERATOR_LESS_THAN

public static final int OPERATOR_LESS_THAN

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OPERATOR_LESS_THAN_OR_EQUAL

public static final int OPERATOR_LESS_THAN_OR_EQUAL

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OPERATOR_GREATER_THAN_OR_EQUAL

public static final int OPERATOR_GREATER_THAN_OR_EQUAL

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OPERATOR_EQUAL

public static final int OPERATOR_EQUAL

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OPERATOR_NOT_EQUAL

public static final int OPERATOR_NOT_EQUAL

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OPERATOR_LOGICAL_NOT

public static final int OPERATOR_LOGICAL_NOT

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OPERATOR_LOGICAL_AND

public static final int OPERATOR_LOGICAL_AND

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OPERATOR_LOGICAL_OR

public static final int OPERATOR_LOGICAL_OR

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OPERATOR_ADD

public static final int OPERATOR_ADD

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OPERATOR_SUBTRACT

public static final int OPERATOR_SUBTRACT

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OPERATOR_MULTIPLY

public static final int OPERATOR_MULTIPLY

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OPERATOR_DIVIDE

public static final int OPERATOR_DIVIDE

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OPERATOR_MOD

public static final int OPERATOR_MOD

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OPERATOR_BITWISE_COMPLIMENT

public static final int OPERATOR_BITWISE_COMPLIMENT

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OPERATOR_BITWISE_AND

public static final int OPERATOR_BITWISE_AND

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OPERATOR_BITWISE_OR

public static final int OPERATOR_BITWISE_OR

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OPERATOR_BITWISE_XOR

public static final int OPERATOR_BITWISE_XOR

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OPERATOR_SHIFT_LEFT

public static final int OPERATOR_SHIFT_LEFT

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OPERATOR_SHIFT_RIGHT

public static final int OPERATOR_SHIFT_RIGHT

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OPERATOR_SHIFT_RIGHT_UNSIGNED

public static final int OPERATOR_SHIFT_RIGHT_UNSIGNED

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OPERATOR_ASSIGN

public static final int OPERATOR_ASSIGN

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OPERATOR_ADD_ASSIGN

public static final int OPERATOR_ADD_ASSIGN

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OPERATOR_SUBTRACT_ASSIGN

public static final int OPERATOR_SUBTRACT_ASSIGN

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OPERATOR_MULTIPLY_ASSIGN

public static final int OPERATOR_MULTIPLY_ASSIGN

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OPERATOR_DIVIDE_ASSIGN

public static final int OPERATOR_DIVIDE_ASSIGN

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OPERATOR_MOD_ASSIGN

public static final int OPERATOR_MOD_ASSIGN

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OPERATOR_BITWISE_AND_ASSIGN

public static final int OPERATOR_BITWISE_AND_ASSIGN

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OPERATOR_BITWISE_OR_ASSIGN

public static final int OPERATOR_BITWISE_OR_ASSIGN

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OPERATOR_BITWISE_XOR_ASSIGN

public static final int OPERATOR_BITWISE_XOR_ASSIGN

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OPERATOR_SHIFT_LEFT_ASSIGN

public static final int OPERATOR_SHIFT_LEFT_ASSIGN

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OPERATOR_SHIFT_RIGHT_ASSIGN

public static final int OPERATOR_SHIFT_RIGHT_ASSIGN

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OPERATOR_SHIFT_RIGHT_UNSIGNED_ASSIGN

public static final int OPERATOR_SHIFT_RIGHT_UNSIGNED_ASSIGN

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OPERATOR_INCREMENT

public static final int OPERATOR_INCREMENT

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OPERATOR_DECREMENT

public static final int OPERATOR_DECREMENT

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OPERATOR_QUESTION

public static final int OPERATOR_QUESTION

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OPERATOR_COLON

public static final int OPERATOR_COLON

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COMMENT_TRADITIONAL

public static final int COMMENT_TRADITIONAL

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COMMENT_END_OF_LINE

public static final int COMMENT_END_OF_LINE

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COMMENT_DOCUMENTATION

public static final int COMMENT_DOCUMENTATION

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WHITE_SPACE

public static final int WHITE_SPACE

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ERROR_IDENTIFIER

public static final int ERROR_IDENTIFIER

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ERROR_UNCLOSED_STRING

public static final int ERROR_UNCLOSED_STRING

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ERROR_MALFORMED_STRING

public static final int ERROR_MALFORMED_STRING

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ERROR_MALFORMED_UNCLOSED_STRING

public static final int ERROR_MALFORMED_UNCLOSED_STRING

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ERROR_UNCLOSED_CHARACTER

public static final int ERROR_UNCLOSED_CHARACTER

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ERROR_MALFORMED_CHARACTER

public static final int ERROR_MALFORMED_CHARACTER

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ERROR_MALFORMED_UNCLOSED_CHARACTER

public static final int ERROR_MALFORMED_UNCLOSED_CHARACTER

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ERROR_INTEGER_DECIMIAL_SIZE

public static final int ERROR_INTEGER_DECIMIAL_SIZE

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ERROR_INTEGER_OCTAL_SIZE

public static final int ERROR_INTEGER_OCTAL_SIZE

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ERROR_INTEGER_HEXIDECIMAL_SIZE

public static final int ERROR_INTEGER_HEXIDECIMAL_SIZE

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ERROR_LONG_DECIMIAL_SIZE

public static final int ERROR_LONG_DECIMIAL_SIZE

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ERROR_LONG_OCTAL_SIZE

public static final int ERROR_LONG_OCTAL_SIZE

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ERROR_LONG_HEXIDECIMAL_SIZE

public static final int ERROR_LONG_HEXIDECIMAL_SIZE

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ERROR_FLOAT_SIZE

public static final int ERROR_FLOAT_SIZE

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ERROR_DOUBLE_SIZE

public static final int ERROR_DOUBLE_SIZE

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ERROR_FLOAT

public static final int ERROR_FLOAT

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ERROR_UNCLOSED_COMMENT

public static final int ERROR_UNCLOSED_COMMENT

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Constructor Detail

JavaScriptToken

public JavaScriptToken(int ID,
                       String contents,
                       int lineNumber,
                       int charBegin,
                       int charEnd)

Create a new token. The constructor is typically called by the lexer

Parameters:

ID - the id number of the token

contents - A string representing the text of the token

lineNumber - the line number of the input on which this token started

charBegin - the offset into the input in characters at which this token started

charEnd - the offset into the input in characters at which this token ended

JavaScriptToken

public JavaScriptToken(int ID,
                       String contents,
                       int lineNumber,
                       int charBegin,
                       int charEnd,
                       int state)

Create a new token. The constructor is typically called by the lexer

Parameters:

ID - the id number of the token

contents - A string representing the text of the token

lineNumber - the line number of the input on which this token started

charBegin - the offset into the input in characters at which this token started

charEnd - the offset into the input in characters at which this token ended

state - the state the tokenizer is in after returning this token.

Method Detail

getState

public int getState()

Get an integer representing the state the tokenizer is in after returning this token. Those who are interested in incremental tokenizing for performance reasons will want to use this method to figure out where the tokenizer may be restarted. The tokenizer starts in Token.INITIAL_STATE, so any time that it reports that it has returned to this state, the tokenizer may be restarted from there.

Specified by:

getState in class Token

getID

public int getID()

get the ID number of this token

Specified by:

getID in class Token

Returns:

the id number of the token

getContents

public String getContents()

get the contents of this token

Specified by:

getContents in class Token

Returns:

A string representing the text of the token

getLineNumber

public int getLineNumber()

get the line number of the input on which this token started

Specified by:

getLineNumber in class Token

Returns:

the line number of the input on which this token started

getCharBegin

public int getCharBegin()

get the offset into the input in characters at which this token started

Specified by:

getCharBegin in class Token

Returns:

the offset into the input in characters at which this token started

getCharEnd

public int getCharEnd()

get the offset into the input in characters at which this token ended

Specified by:

getCharEnd in class Token

Returns:

the offset into the input in characters at which this token ended

isReservedWord

public boolean isReservedWord()

Checks this token to see if it is a reserved word. Reserved words are explained in Java Language Specification.

Returns:

true if this token is a reserved word, false otherwise

isIdentifier

public boolean isIdentifier()

Checks this token to see if it is an identifier. Identifiers are explained in Java Language Specification.

Returns:

true if this token is an identifier, false otherwise

isLiteral

public boolean isLiteral()

Checks this token to see if it is a literal. Literals are explained in Java Language Specification.

Returns:

true if this token is a literal, false otherwise

isSeparator

public boolean isSeparator()

Checks this token to see if it is a Separator. Separators are explained in Java Language Specification.

Returns:

true if this token is a Separator, false otherwise

isOperator

public boolean isOperator()

Checks this token to see if it is a Operator. Operators are explained in Java Language Specification.

Returns:

true if this token is a Operator, false otherwise

isComment

public boolean isComment()

Checks this token to see if it is a comment.

Specified by:

isComment in class Token

Returns:

true if this token is a comment, false otherwise

isWhiteSpace

public boolean isWhiteSpace()

Checks this token to see if it is White Space. Usually tabs, line breaks, form feed, spaces, etc.

Specified by:

isWhiteSpace in class Token

Returns:

true if this token is White Space, false otherwise

isError

public boolean isError()

Checks this token to see if it is an Error. Unfinished comments, numbers that are too big, unclosed strings, etc.

Specified by:

isError in class Token

Returns:

true if this token is an Error, false otherwise

getDescription

public String getDescription()

A description of this token. The description should be appropriate for syntax highlighting. For example "comment" is returned for a comment.

Specified by:

getDescription in class Token

Returns:

a description of this token.

errorString

public String errorString()

get a String that explains the error, if this token is an error.

Specified by:

errorString in class Token

Returns:

a String that explains the error, if this token is an error, null otherwise.

toString

public String toString()

get a representation of this token as a human readable string. The format of this string is subject to change and should only be used for debugging purposes.

Overrides:

toString in class Object

Returns:

a string representation of this token