InvalidHexData class
The InvalidHexData exception class describes an exception associated with finding non-hexadecimal data where hexadecimal data was expected, usually when translating the hexadecimal data to something else.
To produce an InvalidHexData exception yourself, you typically use a User Language Throw statement with an InvalidHexData New constructor. This statement must be issued from within a method, and it can only be caught by the code that calls the method. For example, the following statement throws an InvalidHexData exception with the position set to 1:
throw %(invalidHexData):new(position=1)
For an example of how you might catch an InvalidHexData exception, see Example, below.
The InvalidHexData methods
The following are the available InvalidHexData class methods.
| Method | Description |
|---|---|
| New | Create a new InvalidHexData object |
| Position | Input string position where non-hexadecimal character found |
The methods in the class are described in the subsections that follow. In addition:
- "Notation conventions for methods" has information about the conventions followed.
- "InvalidHexData methods syntax" is a single page that contains the syntax diagrams of all the methods in the class.
New constructor
Create a new InvalidHexData object (InvalidHexData class)
This Constructor generates an instance of an InvalidHexData exception. As shown below, the required argument of the New method is a setting of the Position property.
Syntax
%invalidHexData = [%(InvalidHexData):]New( Position= number)
Syntax terms
| %invalidHexData | A reference to an instance of an InvalidHexData object. |
|---|---|
| [%(InvalidHexData):] | The class name in parentheses denotes a Constructor. |
| Position | This name required parameter specifies the numeric value (number) for the position to be assigned to the InvalidHexData exception object's Position property when a data error is encountered. |
Position property
Input string position where non-hexadecimal character found (InvalidHexData class)
This ReadOnly property is the position in the (expected) hexadecimal string where a non-hexadecimal character was found.
Syntax
%number = invalidHexData:Position
Syntax terms
| %number | This numeric value is the position in the hexadecimal string where a non-hexadecimal character was found. %number will be 0 (zero) if the exception was caused because the method object string contained an odd number of characters. |
|---|---|
| invalidHexData | A reference to an instance of an InvalidHexData object. |
Example
The following statements catch an InvalidHexData exception and print its position:
%target is object invalidhexdata try %myobject:mymethod catch invalidHexData to %target print '%target is ' %target:Position end try