org.opencores.verilogp
Class VTokenizer

java.lang.Object
  |
  +--java.io.StreamTokenizer
        |
        +--org.opencores.verilogp.VTokenizer

class VTokenizer

extends java.io.StreamTokenizer

Implements Verilog suitable tokenizer.

See Also:

StreamTokenizer

Field Summary

(package private) static int	AND defines character with the same name
(package private) static int	BSLASH defines character with the same name
(package private) static int	COLON defines character with the same name
(package private) static int	COMMA defines character with the same name
(package private) static int	DOT defines character with the same name
(package private) static int	EOF defines character with the same name
(package private) static int	EQUAL defines character with the same name
(package private) static int	LBRACKET defines character with the same name
(package private) static int	LCBRACKET defines character with the same name
(package private) static int	LPAREN defines character with the same name
int	nbits Number of bits last number read hold.
(package private) static int	NOT defines character with the same name
(package private) static int	NUMBER defines character with the same name
(package private) static int	OR defines character with the same name
(package private) static int	RBRACKET defines character with the same name
(package private) static int	RCBRACKET defines character with the same name
(package private) static int	RPAREN defines character with the same name
(package private) static int	SEMI defines character with the same name
(package private) static int	XOR defines character with the same name

Fields inherited from class java.io.StreamTokenizer

buf, CT_ALPHA, CT_COMMENT, CT_DIGIT, CT_QUOTE, CT_WHITESPACE, ctype, eolIsSignificantP, forceLower, input, LINENO, nval, peekc, pushedBack, reader, slashSlashCommentsP, slashStarCommentsP, sval, TT_EOF, TT_EOL, TT_NOTHING, TT_NUMBER, TT_WORD, ttype

Constructor Summary

(package private)

VTokenizer(java.io.Reader reader) constructs new Verilog tokenizer

Method Summary

int	nextToken() Gets next token extended.
private int	parseNumber(java.lang.String s) Parses String for binary, octal, decimal or hex number.
private void	setTable() setup lexer table

Methods inherited from class java.io.StreamTokenizer

commentChar, eolIsSignificant, lineno, lowerCaseMode, ordinaryChar, ordinaryChars, parseNumbers, pushBack, quoteChar, read, resetSyntax, slashSlashComments, slashStarComments, toString, whitespaceChars, wordChars

Methods inherited from class java.lang.Object

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

Field Detail

nbits

public int nbits

Number of bits last number read hold.

EOF

static final int EOF

defines character with the same name

NUMBER

static final int NUMBER

defines character with the same name

LPAREN

static final int LPAREN

defines character with the same name

RPAREN

static final int RPAREN

defines character with the same name

COMMA

static final int COMMA

defines character with the same name

COLON

static final int COLON

defines character with the same name

DOT

static final int DOT

defines character with the same name

SEMI

static final int SEMI

defines character with the same name

LBRACKET

static final int LBRACKET

defines character with the same name

RBRACKET

static final int RBRACKET

defines character with the same name

NOT

static final int NOT

defines character with the same name

AND

static final int AND

defines character with the same name

OR

static final int OR

defines character with the same name

XOR

static final int XOR

defines character with the same name

EQUAL

static final int EQUAL

defines character with the same name

BSLASH

static final int BSLASH

defines character with the same name

LCBRACKET

static final int LCBRACKET

defines character with the same name

RCBRACKET

static final int RCBRACKET

defines character with the same name

Constructor Detail

VTokenizer

VTokenizer(java.io.Reader reader)

constructs new Verilog tokenizer

Parameters:

reader - file reader to read from

Method Detail

nextToken

public int nextToken()
              throws java.io.IOException

Gets next token extended. WARNING: '-' shouldn't be pushed back.

Overrides:

nextToken in class java.io.StreamTokenizer

setTable

private void setTable()

setup lexer table

parseNumber

private int parseNumber(java.lang.String s)

Parses String for binary, octal, decimal or hex number. Number of bits required to store number is placed into nbits

Parameters:

s - String to parse

Returns:

number