solve/it.unibo.tuprolog.solve.exception.error/SystemError

SystemError

class SystemError(message: String? = null, cause: Throwable? = null, contexts: Array<ExecutionContext>, extraData: Term? = null) : LogicError

The system error occurs when an internal problem occurred and if not caught, it will halt inferential machine

Author

Enrico

Parameters

message

the detail message string.

cause

the cause of this exception.

contexts

a stack of contexts localising the exception

extraData

The possible extra data to be carried with the error

Constructors

constructor(message: String? = null, cause: Throwable? = null, contexts: Array<ExecutionContext>, extraData: Term? = null)

constructor(message: String? = null, cause: Throwable? = null, context: ExecutionContext, extraData: Term? = null)

Types

object Companion

Properties

expect open val cause: Throwable?

val context: ExecutionContext

val contexts: Array<ExecutionContext>

val errorStruct: Struct

The error Struct as described in Prolog standard: error(error_type, error_extra)

open val extraData: Term?

logicStackTrace

val logicStackTrace: List<Struct>

The exception stacktrace; shorthand for context.prologStackTrace

expect open val message: String?

open val type: Struct

Functions

open override fun pushContext(newContext: ExecutionContext): SystemError

open override fun toString(): String

open override fun updateContext(newContext: ExecutionContext, index: Int = 0): SystemError

Creates a new exception instance with the context with in position index updated to newContext. Subclasses should override this method and return the correct instance.

updateLastContext

open override fun updateLastContext(newContext: ExecutionContext): SystemError