| 1 | package de.uka.ipd.sdq.simucomframework.variables.stoexvisitor; |
| 2 | |
| 3 | /** |
| 4 | * Modes for evaluating stochastic expressions. |
| 5 | * @author Steffen Becker |
| 6 | * |
| 7 | */ |
| 8 | public enum VariableMode { |
| 9 | |
| 10 | /** |
| 11 | * An exception is thrown if the evaluation encounters a variable unknown |
| 12 | * in the current stackframe |
| 13 | */ |
| 14 | EXCEPTION_ON_NOT_FOUND, |
| 15 | |
| 16 | /** |
| 17 | * A default value is returned for variables which do not exist in the |
| 18 | * stackframe. It is 0 for numeric types and "" for enum types. Useful |
| 19 | * for determining bytesizes of the stack contents in cases where not for |
| 20 | * all variables characterisations exist |
| 21 | */ |
| 22 | RETURN_DEFAULT_ON_NOT_FOUND, |
| 23 | |
| 24 | /** |
| 25 | * NULL is returned for variables which do not exist in the |
| 26 | * stackframe. Useful for copying stackframes |
| 27 | */ |
| 28 | RETURN_NULL_ON_NOT_FOUND |
| 29 | } |