CharacterTranslationException class
Various methods throw a CharacterTranslationException exception when they encounter character translation problems. To avert request cancellation, you can catch such an exception, optionally catching to an object of this class.
This class is available as of Sirius Mods Version 7.3.
The CharacterTranslationException methods
The following are the available CharacterTranslationException class methods.
| Method | Description |
|---|---|
| BytePosition | Position of byte at which the exception was thrown |
| CharacterPosition | Position of character at which the exception was thrown |
| Description | Brief description of the exception |
| HexValue | Hexadecimal value of bytes causing the exception |
| New | Create a new CharacterTranslationException object |
| Reason | Enumerated cause of the exception |
The methods in the class are described in the subsections that follow. In addition:
- "Notation conventions for methods" has information about the conventions followed.
- "CharacterTranslationException methods syntax" is a single page that contains the syntax diagrams of all the methods in the class.
BytePosition property
Position of byte at which the exception was thrown (CharacterTranslationException class)
Syntax
%number = characterTranslationException:BytePosition
Syntax terms
| %number | The position of the byte at which the exception was thrown. |
|---|---|
| characterTranslationException | A reference to an instance of a CharacterTranslationException object. |
CharacterPosition property
Position of character at which the exception was thrown (CharacterTranslationException class)
Syntax
%number = characterTranslationException:CharacterPosition
Syntax terms
| %number | The position of the character at which the exception was thrown. |
|---|---|
| characterTranslationException | A reference to an instance of a CharacterTranslationException object. |
Usage notes
- The number of bytes that constitute a character depends on the type of string
that causes the exception:
- If EBCDIC, one byte corresponds to one character.
- If Unicode, two bytes correspond to one character.
- If UTF-16, two bytes correspond to one character.
- If UTF-8, the relationship between bytes and characters is variable, depending on the code points.
Description property
Brief description of the exception (CharacterTranslationException class)
Syntax
%string = characterTranslationException:Description
Syntax terms
| %string | A string to receive the description of the exception. |
|---|---|
| characterTranslationException | A reference to an instance of a CharacterTranslationException object. |
HexValue property
Hexadecimal value of bytes causing the exception (CharacterTranslationException class)
Syntax
%string = characterTranslationException:HexValue
Syntax terms
| %string | A string to receive the hexadecimal value of the bytes that caused the exception to be thrown. |
|---|---|
| characterTranslationException | A reference to an instance of a CharacterTranslationException object. |
New constructor
Create a new CharacterTranslationException object (CharacterTranslationException class) Each argument to New sets the value of the corresponding property of the newly constructed CharacterTranslationException object.
Syntax
%characterTranslationException = [%(CharacterTranslationException):]New( Reason= translationExceptionReason, - [HexValue= string], - [BytePosition= number], - [CharacterPosition= number], - [Description= string])
Syntax terms
| %characterTranslationException | A reference to the newly created instance of a CharacterTranslationException object. |
|---|---|
| %(CharacterTranslationException) | The class name in parentheses denotes a shared method. |
| Reason | Reason is a non-optional, name required parameter specifying the value to be assigned to the exception object's Reason property.
As described for the Reason property, the translationExceptionReason enumeration values are InvalidEncoding, InvalidCharacterReference, and UntranslatableCharacter. |
| HexValue | This name required parameter specifies the string value (string) to be assigned to the object's HexValue property. |
| BytePosition | This name required parameter specifies the numeric value (number) to be assigned to the object's BytePosition property. |
| CharacterPosition | This name required parameter specifies the numeric value (number) to be assigned to the object's CharacterPosition property. |
| Description | This name required parameter specifies the string value (string) to be assigned to the object's Description property. |
Reason property
Enumerated cause of the exception (CharacterTranslationException class)
Syntax
%translationExceptionReason = characterTranslationException:Reason
Syntax terms
| %translationExceptionReason | This TranslationExceptionReason enumeration value describes the reason for the translation failure. |
|---|---|
| characterTranslationException | A reference to an instance of a CharacterTranslationException object. |
TranslationExceptionReason enumeration
A TranslationExceptionReason enumeration may have one of the following values:
| InvalidEncoding | An example of invalid encoding is UTF-16 string input to Utf16ToUnicode that contains bytes whose hexadecimal value is D800 (which is in the surrogates range). |
|---|---|
| InvalidCharacterReference | An XML-style hexadecimal character reference (for example, ™ for the trademark character) may validly represent a Unicode character to be translated. Any other string that begins with by an ampersand (&) — except the string & — might cause an exception explained by an InvalidCharacterReference enumeration.
For example, such an exception occurs if EbcdicToUnicode is called, the method argument is |
| UntranslatableCharacter | The following are examples of untranslatable characters (with the translation tables as delivered by Sirius):
|
Usage notes
As with all enumerations, you use the ToString method to convert an enumeration value to a character string whose value is the name of the enumeration value.