Asn1CharRange Class Reference

Inheritance diagram for Asn1CharRange:
Asn1CharSet

List of all members.

Public Member Functions

 Asn1CharRange (int lower, int upper)
override int GetCharAtIndex (int index)
override int GetCharIndex (int charValue)
override bool validate (String s)

Protected Attributes

internal int mLower
internal int mUpper

Properties

override int MaxValue [get]

Detailed Description

This class is used to represent a permitted alphabet that is specified
as a large, continuous range of characters. An example of this can be found in the following extract from T.124:
simpleTextFirstCharacter UniversalString ::= {0, 0, 0, 0}
simpleTextLastCharacter UniversalString ::= {0, 0, 0, 255}
SimpleTextString ::= BMPString (SIZE (0..255))
(FROM (simpleTextFirstCharacter..simpleTextLastCharacter))
This class is mainly for internal use by the compiler when generating
methods that encode/Decode PER charater string components containing permitted alphabet constraints.

Constructor & Destructor Documentation

Asn1CharRange ( int  lower,
int  upper 
)

This constructor sets the range values.

Parameters:
lower Range lower value
upper Range upper value

Member Function Documentation

override int GetCharAtIndex ( int  index  )  [virtual]

This method will fetch the character from the permitted alphabet at the given index.

Parameters:
index Index of character within the character set
Returns:
Character at given index
Exceptions:
Asn1ConsVioException Index not within define range

Implements Asn1CharSet.

override int GetCharIndex ( int  charValue  )  [virtual]

This method will determine the index of the given character within the permitted alphabet character set.

Parameters:
charValue Character value to search for
Returns:
Index of character
Exceptions:
Asn1ConsVioException Character not found in set

Implements Asn1CharSet.

override bool validate ( String  s  )  [virtual]

This method will validate a character string by comparing its contents to the character range. Each character in the string is checked against the range. If it exceeds the upper or lower limit of the range, false is returned. Otherwise true is returned.

Parameters:
s The string to be validated.
Returns:
False if the string contains invalid characters; true otherwise.

Implements Asn1CharSet.

Member Data Documentation

internal int mLower [protected]

This variable represents the lower value of the range.

internal int mUpper [protected]

This variable represents the upper value of the range.

Property Documentation

override int MaxValue [get]

Gets the maximum value of character within the given permitted alphabet character set.

Value: Upper Bound Character or Character with max int value

Reimplemented from Asn1CharSet.