marf.nlp.Parsing
Class LexicalAnalyzer

java.lang.Object
  |
  +--marf.nlp.Parsing.GenericLexicalAnalyzer
        |
        +--marf.nlp.Parsing.LexicalAnalyzer

public class LexicalAnalyzer

extends GenericLexicalAnalyzer

LexicalAnalyzer class encapsulates the functionality required for lexical analysis of a C+- source program. $Id: LexicalAnalyzer.java,v 1.9 2005/06/04 03:54:37 mokhov Exp $

Since:

0.3.0

Version:

$Revision: 1.9 $

Author:

Serguei Mokhov

Field Summary

Fields inherited from class marf.nlp.Parsing.GenericLexicalAnalyzer

ErrorLogFilename, ErrorsPresent, LexicalErrors, oFileReader, oStreamTokenizer, oToken, OutputFilename, SourceFilename, SymTab, TokenList

Constructor Summary

LexicalAnalyzer(marf.nlp.Parsing.SymbolTable pSymTab)
Constructor.

Method Summary

java.util.Vector	getLexicalErrors() Returns the list of lexical errors.
marf.nlp.Parsing.Token	getNextToken() Core method of the C+- LexicalAnalyzer.
static java.lang.String	getRevision() Retrieves class' revision.
boolean	init() Initialization routine.
boolean	serialize(int piOperation) Load/Save the textual contents of such as Token list and Error list.
protected int	validNum(java.lang.String pstrNum) Validates that an incoming string is a valid number or not.

Methods inherited from class marf.nlp.Parsing.GenericLexicalAnalyzer

createToken, getErrorLogFilename, getErrorsPresent, getOutputFilename, getSourceFilename, getSymTab, getTokenList, scan, setErrorLogFilename, setOutputFilename, setSourceFilename

Methods inherited from class java.lang.Object

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

Constructor Detail

LexicalAnalyzer

public LexicalAnalyzer(marf.nlp.Parsing.SymbolTable pSymTab)

Constructor.

Method Detail

init

public boolean init()

Initialization routine.

Overrides:

init in class GenericLexicalAnalyzer

serialize

public boolean serialize(int piOperation)

Load/Save the textual contents of such as Token list and Error list. 0 means load, 1 means save. Load currently is not implemented

Specified by:

serialize in class GenericLexicalAnalyzer

getNextToken

public marf.nlp.Parsing.Token getNextToken()

Core method of the C+- LexicalAnalyzer.

Specified by:

getNextToken in class GenericLexicalAnalyzer

validNum

protected int validNum(java.lang.String pstrNum)

Validates that an incoming string is a valid number or not.

Parameters:

pstrNum - a string constating valid numerical chars

Returns:

int, LexicalError Error code

getLexicalErrors

public java.util.Vector getLexicalErrors()

Returns the list of lexical errors.

Returns:

Vector LexicalErrors

getRevision

public static java.lang.String getRevision()

Retrieves class' revision.

Returns:

revision string