ErgoTreeEvaluator

Value Members

1. final def !=(arg0: Any): Boolean

   

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2. final def ##(): Int

   

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3. final def ==(arg0: Any): Boolean

   

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4. val DataBlockSize: Int

   

   Size of data block in bytes.

   Size of data block in bytes. Used in JIT cost calculations.

   See also

   sigmastate.NEQ,

5. val DefaultEvalSettings: EvalSettings

   

   Default global EvalSettings instance.

6. val DefaultProfiler: Profiler

   

   A profiler which is used by default if EvalSettings.isMeasureOperationTime is enabled.

7. val EmptyDataEnv: DataEnv

   

   Empty data environment.

8. final def asInstanceOf[T0]: T0

   

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9. def clone(): AnyRef

   

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   protected[java.lang]

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10. final def eq(arg0: AnyRef): Boolean

    

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11. def equals(arg0: Any): Boolean

    

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12. def error(msg: String): Nothing

    

13. def eval(sigmaContext: Context, costAccumulator: CostAccumulator, constants: Seq[Constant[SType]], exp: SValue, evalSettings: EvalSettings): (Any, Int)

    

    Evaluate the given expression in the given Ergo context using the given settings.

    Evaluate the given expression in the given Ergo context using the given settings. The given Value is evaluated as-is and is not changed during evaluation.

    sigmaContext

    special.sigma.Context instance used for script execution

    costAccumulator

    CostAccumulator instance used for accumulating costs

    constants

    collection of segregated constants which can be refered by ConstantPlaceholders in exp

    exp

    ErgoTree expression represented as sigmastate.Values.Value

    evalSettings

    evaluation settings

    returns

    1) the result of evaluating exp in a given context and 2) an accumulated JIT cost estimation.

14. def eval(context: ErgoLikeContext, constants: Seq[Constant[SType]], exp: SValue, evalSettings: EvalSettings): (Any, Int)

    

    Evaluate the given expression in the given Ergo context using the given settings.

    Evaluate the given expression in the given Ergo context using the given settings. The given Value is evaluated as-is and is not changed during evaluation.

    context

    ErgoLikeContext used for script execution

    constants

    collection of segregated constants which can be refered by ConstantPlaceholders in exp

    exp

    ErgoTree expression represented as Value

    evalSettings

    evaluation settings

    returns

    1) the result of evaluating exp in a given context and 2) an accumulated JIT cost estimation.

15. def evalToCrypto(context: ErgoLikeContext, ergoTree: ErgoTree, evalSettings: EvalSettings): JitReductionResult

    

    Evaluate the given ErgoTree in the given Ergo context using the given settings.

    Evaluate the given ErgoTree in the given Ergo context using the given settings. The given ErgoTree is evaluated as-is and is not changed during evaluation.

    context

    ErgoLikeContext used for script execution

    ergoTree

    script represented as ErgoTree

    evalSettings

    evaluation settings

    returns

    a sigma protocol proposition (as SigmaBoolean) and accumulated JIT cost estimation.

16. def finalize(): Unit

    

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17. def fixedCostOp[R <: AnyRef](costInfo: OperationCostInfo[FixedCost])(block: ⇒ R)(implicit E: ErgoTreeEvaluator): R

    

    Executes FixedCost code block and use the given evaluator E to perform profiling and cost tracing.

    Executes FixedCost code block and use the given evaluator E to perform profiling and cost tracing. This helper method allows implementation of cost-aware code blocks by using thread-local instance of ErgoTreeEvaluator. If the currentEvaluator DynamicVariable is not initialized (equals to null), then the block is executed with minimal overhead.

    costInfo

    operation descriptor

    block

    block of code to be executed (given as lazy by-name argument)

    E

    evaluator to be used (or null if it is not available on the current thread), in which case the method is equal to the block execution.

    returns

    result of code block execution HOTSPOT: don't beautify the code Note, null is used instead of Option to avoid allocations.

18. def forProfiling(profiler: Profiler, evalSettings: EvalSettings): ErgoTreeEvaluator

    

    Creates a new ErgoTreeEvaluator instance with the given profiler and settings.

    Creates a new ErgoTreeEvaluator instance with the given profiler and settings. The returned evaluator can be used to initialize the currentEvaluator variable. As a result, cost-aware operations (code blocks) can be implemented, even when those operations don't involve ErgoTree evaluation. As an example, see methods in sigmastate.SigSerializer and sigmastate.FiatShamirTree where cost-aware code blocks are used.

19. final def getClass(): Class[_]

    

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20. def getCurrentEvaluator: ErgoTreeEvaluator

    

    Returns a current evaluator for the current thread.

21. def hashCode(): Int

    

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22. final def isInstanceOf[T0]: Boolean

    

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23. final def ne(arg0: AnyRef): Boolean

    

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24. final def notify(): Unit

    

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25. final def notifyAll(): Unit

    

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26. def perItemCostOp[R](costInfo: OperationCostInfo[PerItemCost], nItems: Int)(block: () ⇒ R)(implicit E: ErgoTreeEvaluator): R

    

    Executes PerItemCost code block and use the given evaluator E to perform profiling and cost tracing.

    Executes PerItemCost code block and use the given evaluator E to perform profiling and cost tracing. This helper method allows implementation of cost-aware code blocks by using thread-local instance of ErgoTreeEvaluator. If the currentEvaluator DynamicVariable is not initialized (equals to null), then the block is executed with minimal overhead.

    costInfo

    operation descriptor

    nItems

    number of data items in the operation

    block

    block of code to be executed (given as lazy by-name argument)

    E

    evaluator to be used (or null if it is not available on the current thread), in which case the method is equal to the block execution.

    returns

    result of code block execution HOTSPOT: don't beautify the code Note, null is used instead of Option to avoid allocations.

27. final def synchronized[T0](arg0: ⇒ T0): T0

    

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28. def toString(): String

    

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29. final def wait(): Unit

    

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30. final def wait(arg0: Long, arg1: Int): Unit

    

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31. final def wait(arg0: Long): Unit

    

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