Packages

t

org.opalj.ai

Configuration

trait Configuration extends AnyRef

Centralizes all configuration options related to how a domain should handle situations in which the information about a value is (often) not completely available and which could lead to some kind of exception.

Basically all domains that perform some kind of abstraction should mix in this trait and query the respective method to decide if a respective exception should be thrown if it is possible that an exception may be thrown.

Usage

If you need to adapt a setting just override the respective method in your domain.

In general, the org.opalj.ai.domain.ThrowAllPotentialExceptionsConfiguration should be used as a foundation as it generates all exceptions that may be thrown; however, configuring the behavior of method calls may be worth while.

Source
Configuration.scala
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  1. abstract def abortProcessingExceptionsOfCalledMethodsOnUnknownException: Boolean

    If true the processing of the exception handlers related to an invoke statement will be aborted if the relation between the type of the thrown exception and the caught type is unknown.

    If true the processing of the exception handlers related to an invoke statement will be aborted if the relation between the type of the thrown exception and the caught type is unknown.

    Note

    Directly used by the AI itself.

  2. abstract def abortProcessingThrownExceptionsOnUnknownException: Boolean

    If true the processing of the exception handlers related to an athrow statement will be aborted if the relation between the type of the thrown exception and the caught type is unknown.

    If true the processing of the exception handlers related to an athrow statement will be aborted if the relation between the type of the thrown exception and the caught type is unknown.

    Note

    Directly used by the AI itself.

  3. abstract def throwArithmeticExceptions: Boolean

    If true, all instructions that may raise an arithmetic exception (e.g., idiv, ldiv) should do so if it is impossible to statically determine that no exception will occur.

    If true, all instructions that may raise an arithmetic exception (e.g., idiv, ldiv) should do so if it is impossible to statically determine that no exception will occur. But, if we can statically determine that the operation will raise an exception then the exception will be thrown – independently of this setting. Furthermore, if we can statically determine that no exception will be raised, no exception will be thrown. Hence, this setting only affects computations with values with incomplete information.

  4. abstract def throwArrayIndexOutOfBoundsException: Boolean

    If true an ArrayIndexOutOfBoundsException is thrown if the index cannot be verified to be valid.

  5. abstract def throwArrayStoreException: Boolean

    If true an ArrayStoreException is thrown if it cannot be verified that the value can be stored in the array.

  6. abstract def throwClassCastException: Boolean

    If true a ClassCastException is thrown by CHECKCAST instructions if it cannot be verified that no ClassCastException will be thrown.

    If true a ClassCastException is thrown by CHECKCAST instructions if it cannot be verified that no ClassCastException will be thrown.

    Note

    Directly used by the AI itself.

  7. abstract def throwClassNotFoundException: Boolean

    Throw a ClassNotFoundException if the a specific reference type is not known in the current context.

    Throw a ClassNotFoundException if the a specific reference type is not known in the current context. The context is typically a specific Project.

  8. abstract def throwExceptionsOnMethodCall: ExceptionsRaisedByCalledMethod

    Determines the behavior how method calls are handled when the exceptions that the called method may throw are unknown.

    Determines the behavior how method calls are handled when the exceptions that the called method may throw are unknown.

    Note

    Used by domains which handle method invokations.

  9. abstract def throwIllegalMonitorStateException: Boolean

    If true then monitorexit and the (XXX)return instructions will throw IllegalMonitorStateExceptions unless the analysis is able to determine that the exception is guaranteed not to be raised.

  10. abstract def throwNegativeArraySizeException: Boolean

    If true a NegativeArraySizeException is thrown if the index cannot be verified to be positive.

  11. abstract def throwNullPointerExceptionOnArrayAccess: Boolean

    Returns true if potential NullPointerExceptions should be thrown and false if such NullPointerExceptions should be ignored.

    Returns true if potential NullPointerExceptions should be thrown and false if such NullPointerExceptions should be ignored. However, if the interpreter identifies a situation in which a NullPointerException is guaranteed to be thrown, it will be thrown.

  12. abstract def throwNullPointerExceptionOnFieldAccess: Boolean

    Returns true if potential NullPointerExceptions should be thrown and false if such NullPointerExceptions should be ignored.

    Returns true if potential NullPointerExceptions should be thrown and false if such NullPointerExceptions should be ignored. However, if the interpreter identifies a situation in which a NullPointerException is guaranteed to be thrown, it will be thrown.

  13. abstract def throwNullPointerExceptionOnMethodCall: Boolean

    Returns true if potential NullPointerExceptions should be thrown and false if such NullPointerExceptions should be ignored.

    Returns true if potential NullPointerExceptions should be thrown and false if such NullPointerExceptions should be ignored. However, if the interpreter identifies a situation in which a NullPointerException is guaranteed to be thrown, it will be thrown. Example:

    def demo(o : Object) {
         o.toString  // - If "true", a NullPointerException will ALSO be thrown;
                     //   the operation also succeeds.
                     // - If "false" the operation will "just" succeed
    }
    Note

    Used by domains which handle method invokations.

  14. abstract def throwNullPointerExceptionOnMonitorAccess: Boolean

    Returns true if potential NullPointerExceptions should be thrown and false if such NullPointerExceptions should be ignored.

    Returns true if potential NullPointerExceptions should be thrown and false if such NullPointerExceptions should be ignored. However, if the interpreter identifies a situation in which a NullPointerException is guaranteed to be thrown, it will be thrown.

  15. abstract def throwNullPointerExceptionOnThrow: Boolean

    If true a NullPointerExceptions is thrown if the exception that is to be thrown is not not known to be null.

    If true a NullPointerExceptions is thrown if the exception that is to be thrown is not not known to be null.

    Note

    Directly used by the AI itself.

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