ScanString

java.lang.Object
- graph.ScanString

Direct Known Subclasses:

ParseFunction
```
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.

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`EOS` flag the End of String
`static int`	`ERROR` Flag an error
`static int`	`NUMBER` Flag a Number
`double`	`nval`
`String`	`sval`
`static int`	`UNKNOWN` flag an unknown token

Constructor Summary

Constructors
Constructor and Description

ScanString()
Instantiate the Class

ScanString(String s)
Instantaite the Class

Constructors
Constructor and Description
`ScanString()` Instantiate the Class
`ScanString(String s)` Instantaite the Class

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addKeyWord(String s, int i)` Add a keyword/token pair to the table of keywords to scan for.
`int`	`getKeyValue(String s)`
`int`	`nextWord()` Process the string and return the next token found.
`void`	`resetKeyWords()` Clear the table containing the keyword/token pairs
`void`	`setString(String s)` Set the string to be scanned

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - UNKNOWN
```
public static final int UNKNOWN
```
    flag an unknown token
    
    See Also:
    
    Constant Field Values
  - ERROR
```
public static final int ERROR
```
    Flag an error
    
    See Also:
    
    Constant Field Values
  - NUMBER
```
public static final int NUMBER
```
    Flag a Number
    
    See Also:
    
    Constant Field Values
  - EOS
```
public static final int EOS
```
    flag the End of String
    
    See Also:
    
    Constant Field Values
  - sval
```
public String sval
```
  - nval
```
public double nval
```
- Constructor Detail
  - ScanString
```
public ScanString()
```
    Instantiate the Class
  - ScanString
```
public ScanString(String s)
```
    Instantaite the Class
    
    Parameters:
    
    s - String to scan for tokens
- Method Detail
  - setString
```
public void setString(String s)
```
    Set the string to be scanned
    
    Parameters:
    
    s - String
  - 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
  - getKeyValue
```
public int getKeyValue(String s)
```
    Parameters:
    
    s - keyword string
    
    Returns:
    
    the token corresponding to the keyword
  - resetKeyWords
```
public void resetKeyWords()
```
    Clear the table containing the keyword/token pairs
  - nextWord
```
public int nextWord()
```
    Process the string and return the next token found.
    
    Returns:
    
    token found

Class ScanString

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

UNKNOWN

ERROR

NUMBER

EOS

sval

nval

Constructor Detail

ScanString

ScanString

Method Detail

setString

addKeyWord

getKeyValue

resetKeyWords

nextWord