79 lines
2.4 KiB
Scala
79 lines
2.4 KiB
Scala
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package day09.intcode
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import day09.intcode.opcode.{Action, Input, Jump, OpCode9, OpCode99, Output}
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class Machine(input: Array[Long])
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{
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private[this] val original = input.clone()
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private[this] var software = input.clone()
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private[this] var pointer = 0
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private[this] var relative: Long = 0
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private[this] var halted = false
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def isHalted: Boolean = halted
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def reset(): Machine = {
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software = original.clone()
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halted = false
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pointer = 0
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this
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}
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@scala.annotation.tailrec
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final def runUntilIO(): Machine =
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{
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val tuple = OpCode99.parseInt(software(pointer).toInt);
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tuple match
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{
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case (_, _, _, OpCode99) =>
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halted = true
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this
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case (_, _, _, outputInstr: Output) => this
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case (_, _, _, inputInstr: Input) => this
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case (m3, m2, m1, instruction: Jump) =>
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val (bool, jmpPtr) = instruction.checkConditionAndJump(software, relative, software(pointer+1), software(pointer+2), software(pointer+3), m1, m2, m3)
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if (bool) pointer = jmpPtr
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else pointer += instruction.length
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runUntilIO()
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case (m3, m2, m1, instruction: Action) =>
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instruction.exec(software, relative, software(pointer+1), software(pointer+2), software(pointer+3), m1, m2, m3)
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pointer += instruction.length
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runUntilIO()
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case (_, _, m1, OpCode9) =>
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relative += OpCode9.exec(software, relative, software(pointer+1), m1)
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pointer += OpCode9.length
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runUntilIO()
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case _ => throw new Exception("Something went wrong")
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}
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}
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def runInput(input: Long): Machine =
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{
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val tuple = OpCode99.parseInt(software(pointer).toInt)
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tuple match
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{
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case (_, _, _, OpCode99) => this
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case (_, _, m1, inputInstr: Input) =>
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inputInstr.input(software, relative, software(pointer+1), m1, input)
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pointer += inputInstr.length
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this
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case _ => throw new Exception("Unexpected instruction")
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}
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}
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def runOutput(): Long =
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{
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val tuple = OpCode99.parseInt(software(pointer).toInt)
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tuple match
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{
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case (_, _, _, OpCode99) => 0
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case (_, _, m1, outputInstr: Output) =>
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val out = outputInstr.output(software, relative, software(pointer+1), m1)
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pointer += outputInstr.length
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out
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case _ => throw new Exception("Unexpected instruction")
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}
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}
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}
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