Trait

org.opalj.ai

Configuration

Related Doc: package ai

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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 it generates all exceptions that may be thrown.

Source
Configuration.scala
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Abstract Value Members

  1. abstract def throwArithmeticExceptions: Boolean

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    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.

  2. abstract def throwArrayIndexOutOfBoundsException: Boolean

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

  3. abstract def throwArrayStoreException: Boolean

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

  4. abstract def throwClassCastException: Boolean

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

  5. abstract def throwClassNotFoundException: Boolean

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    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.

  6. abstract def throwExceptionsOnMethodCall: ExceptionsRaisedByCalledMethod

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

  7. abstract def throwIllegalMonitorStateException: Boolean

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    If true then monitorexit and the (XXX)return instructions will throw IllegalMonitorStateExceptions unless the analysis is able to determine that the exception is guaranteed to be raised.

  8. abstract def throwNegativeArraySizeException: Boolean

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

  9. abstract def throwNullPointerExceptionOnArrayAccess: Boolean

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    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.

  10. abstract def throwNullPointerExceptionOnFieldAccess: Boolean

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    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.

  11. abstract def throwNullPointerExceptionOnMethodCall: Boolean

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    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
    }
  12. abstract def throwNullPointerExceptionOnMonitorAccess: Boolean

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    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 throwNullPointerExceptionOnThrow: Boolean

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

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