Class graph.ScanString 
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Class graph.ScanString 

java.lang.Object
   |
   +----graph.ScanString
public class ScanString
extends Object
This class is similar to the ScanWord class, except it scans a string for keywords rather than an input stream.
Version:
1.5, 1996/07/12 00:35:49
Author:
Leigh Brookshaw

Variable Index

o EOS
flag the End of String
o ERROR
Flag an error
o NUMBER
Flag a Number
o nval
o sval
o UNKNOWN
flag an unknown token

Constructor Index

o ScanString()
Instantiate the Class
o ScanString(String)
Instantaite the Class

Method Index

o addKeyWord(String, int)
Add a keyword/token pair to the table of keywords to scan for.
o getKeyValue(String)
o nextWord()
Process the string and return the next token found.
o resetKeyWords()
Clear the table containing the keyword/token pairs
o setString(String)
Set the string to be scanned

Variables

o UNKNOWN 
  public final static int UNKNOWN
flag an unknown token
o ERROR 
  public final static int ERROR
Flag an error
o NUMBER 
  public final static int NUMBER
Flag a Number
o EOS 
  public final static int EOS
flag the End of String
o sval 
  public String sval
o nval 
  public double nval

Constructors

o ScanString 
  public ScanString()
Instantiate the Class
o ScanString 
  public ScanString(String s)
Instantaite the Class
Parameters:
s - String to scan for tokens

Methods

o setString 
  public void setString(String s)
Set the string to be scanned
Parameters:
s - String
o addKeyWord 
  public void addKeyWord(String s,
                         int i)
Add a keyword/token pair to the table of keywords to scan for.
Parameters:
s - keyword string to scan for
i - token to return when the keyword is found
o getKeyValue 
  public int getKeyValue(String s)
Parameters:
s - keyword string
Returns:
the token corresponding to the keyword
o resetKeyWords 
  public void resetKeyWords()
Clear the table containing the keyword/token pairs
o nextWord 
  public int nextWord()
Process the string and return the next token found.
Returns:
token found 
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