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Class java.io.StreamTokenizer

java.lang.Object
   |
   +----java.io.StreamTokenizer

public class StreamTokenizer

extends Object

Author:

James Gosling

TT_EOF

End of file token

TT_EOL

End of line token

TT_NUMBER

Number token.

TT_WORD

Word token.

eolIsSignificant

Set to true if end-of-lines are significant (TT_EOL will be returned by nexttoken).

hashComments

If true, '#' starts a single line comment.

lineno

The line number of the last token read

nval

slashSlashComments

Set to true to recognize C++ style // comments

slashStarComments

Set to true to recognize C style /* comments

sval

ttype

The type of the last token returned.

StreamTokenizer(InputStream)

Create a stream tokenizer that parses the given input stream.

commentChar(int)

Specify that this character starts a single line comment.

nextToken()

Parse a token from the input stream.

ordinaryChar(int)

Specify that this character is 'ordinary': it removes any significance as a word, comment, string, whitespace or number character.

ordinaryChars(int, int)

Specify that characters in this range are 'ordinary': it removes any significance as a word, comment, string, whitespace or number character.

parseNumbers()

Specify that numbers should be parsed.

quoteChar(int)

Specify that matching pairs of this character delimit string constants.

resetSyntax()

Reset the syntax table so that all characters are special

toString()

whitespaceChars(int, int)

Specify that characters in this range are whitespace characters

wordChars(int, int)

Specify that characters in this range are word characters

  public int lineno

The line number of the last token read

  public boolean eolIsSignificant

Set to true if end-of-lines are significant (TT_EOL will be returned by nexttoken). If false, they will be treated as whitespace

  public boolean slashSlashComments

Set to true to recognize C++ style // comments

  public boolean slashStarComments

Set to true to recognize C style /* comments

  public boolean hashComments

If true, '#' starts a single line comment. This is here solely for compatibility with 1.0a1. Use commentChar('#') instead.

  public int ttype

The type of the last token returned. It's value will either be one of the following TT_* constants, or a single character. For example, if '+' is encountered and is not a valid word character, ttype will be '+'

  public final static int TT_EOF

End of file token

  public final static int TT_EOL

End of line token

  public final static int TT_NUMBER

Number token. The value is in nval

  public final static int TT_WORD

Word token. The value is in sval

  public String sval

  public double nval

  public StreamTokenizer(InputStream I)

Create a stream tokenizer that parses the given input stream. By default, it recognizes numbers, all the alphabetics are valid word characters, and strings quoted with single and double quote.

  public void resetSyntax()

Reset the syntax table so that all characters are special

wordChars

  public void wordChars(int low,
                        int hi)

Specify that characters in this range are word characters

whitespaceChars

  public void whitespaceChars(int low,
                              int hi)

Specify that characters in this range are whitespace characters

ordinaryChars

  public void ordinaryChars(int low,
                            int hi)

Specify that characters in this range are 'ordinary': it removes any significance as a word, comment, string, whitespace or number character. When encountered by the parser, they return a ttype equal to the character.

ordinaryChar

  public void ordinaryChar(int ch)

Specify that this character is 'ordinary': it removes any significance as a word, comment, string, whitespace or number character. When encountered by the parser, it returns a ttype equal to the character.

commentChar

  public void commentChar(int ch)

Specify that this character starts a single line comment.

quoteChar

  public void quoteChar(int ch)

Specify that matching pairs of this character delimit string constants. When a string constant is recognized ttype will be the character that delimits the string, and sval will have the body of the string.

parseNumbers

  public void parseNumbers()

Specify that numbers should be parsed. It accepts double precision floating point numbers and returns a ttype of TT_NUMBER with the value in nval.

nextToken

  public int nextToken()

Parse a token from the input stream. The return value is the same as the value of ttype. Typical clients of this class first set up the syntax tables and then sit in a loop calling nextToken to parse successive tokens until TT_EOF is returned.

toString

  public String toString()

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