avail/avail.interpreter.levelTwoSimple/L2Simple_Invoke

L2Simple_Invoke

class L2Simple_Invoke( val stackp: Int, val pc: Int, val nextOffset: Int, val liveIndices: IntArray, val expectedType: A_Type, val mustCheck: Boolean, val function: A_Function) : L2Simple_AbstractInvokerInstruction

Invoke a constant A_Function, perhaps the result of a lookup that was proven at translation time to be monomorphic.

Constructors

L2Simple_Invoke

fun L2Simple_Invoke( stackp: Int, pc: Int, nextOffset: Int, liveIndices: IntArray, expectedType: A_Type, mustCheck: Boolean, function: A_Function)

Functions

fieldValueToString

fun fieldValueToString(value: Any?): String

Generate a suitable print representation of the value.

handleVariableGetException

fun handleVariableGetException( e: VariableGetException, interpreter: Interpreter, registers: Array<AvailObject>): StackReifier

A VariableGetException has occurred. Invoke the READ_UNASSIGNED_VARIABLE hook function, which, because it is ⊥-valued, can only reify. Eventually answer that StackReifier.

handleVariableSetException

fun handleVariableSetException( e: VariableSetException, variable: A_Variable, value: AvailObject, interpreter: Interpreter, registers: Array<AvailObject>): StackReifier?

A VariableSetException has occurred. Run the implicit-observe handler, and answer null if it completes, or a suitable StackReifier if it eventually reifies.

reenter

open override fun reenter(registers: Array<AvailObject>, interpreter: Interpreter): StackReifier?

This is called when the invocation for this step had to reify, and now we've finished the actual Avail call and we're attempting to continue where we left off. We have to check the returned value and either capture it on the stack or invoke the result check failure function.

step

open override fun step(registers: Array<AvailObject>, interpreter: Interpreter): StackReifier?

Perform this instruction, a single step of an L2SimpleChunk. The mutable Array of AvailObjects acts as a simple set of registers. Element 0 is the current function, and the remaining elements correspond with the continuation slots, should one need to be constructed.

toString