61 lines
2.3 KiB
Scala
61 lines
2.3 KiB
Scala
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package day09.intcode.opcode
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trait OpCode
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{
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/** length of an instruction */
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val length: Int
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/** Parse int to full OpCode */
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def parseInt(code: Int): (Int, Int, Int, OpCode) = // Dunno how to make this static lmao
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{
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val opCodeInt: Int = code % 100 // Instruction Code
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val modeStr = code.toString.substring(0, {if (code.toString.length > 1) code.toString.length - 2 else 0})
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val modes = "000".substring(modeStr.length) + modeStr
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(modes(0).asDigit, modes(1).asDigit, modes(2).asDigit, opCodeInt) match
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{
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case (a, b, c, 1) => (a, b, c, OpCode1)
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case (a, b, c, 2) => (a, b, c, OpCode2)
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case (a, b, c, 3) => (a, b, c, OpCode3)
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case (a, b, c, 4) => (a, b, c, OpCode4)
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case (a, b, c, 5) => (a, b, c, OpCode5)
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case (a, b, c, 6) => (a, b, c, OpCode6)
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case (a, b, c, 7) => (a, b, c, OpCode7)
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case (a, b, c, 8) => (a, b, c, OpCode8)
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case (a, b, c, 9) => (a, b, c, OpCode9)
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case (_, _, _, 99) => (0, 0, 0, OpCode99)
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case c => throw new Exception("Wrong instruction code " + c)
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}
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}
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/** Returns correct value, immediate or positional */
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protected[this] def accessor(relative: Long, param: Long, mode: Int, tape: Array[Long]): Long =
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{
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mode match
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{
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case 0 => /* println("Reading "+tape(param)+" from array("+param+")");*/ tape(param.toInt)
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case 1 => /*println("Reading "+param+" immediate");*/ param
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case 2 => tape((param+relative).toInt)
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case p => throw new Exception("HCF: wrong accessor parameter " + p)
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}
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}
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/**
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* Writes something to the tape
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* @param tape Program memory
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* @param relative Relative index
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* @param param Location where to write
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* @param mode Where to write: 0->tape(param1); 2->tape(param1+relative)
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* @param value What to write to the tape
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*/
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protected[this] def writer(tape: Array[Long], relative: Long, param: Long, mode: Int, value: Long): Unit =
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{
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mode match
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{
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case 0 => tape(param.toInt) = value//; println("Writing "+value+" to array("+param+")")
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case 1 => throw new Exception("HCF: unimplemented writer parameter 1")
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case 2 => tape((param+relative).toInt) = value
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case p => throw new Exception("HCF: wrong writer parameter " + p)
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}
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}
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}
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