50 lines
1.9 KiB
Scala
50 lines
1.9 KiB
Scala
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package day5.opcode
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abstract 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).toArray.map(_.asDigit) // List of modes
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opCodeInt match {
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case 1 => (modes(0), modes(1), modes(2), OpCode1)
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case 2 => (modes(0), modes(1), modes(2), OpCode2)
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case 3 => (modes(0), modes(1), modes(2), OpCode3)
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case 4 => (modes(0), modes(1), modes(2), OpCode4)
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case 5 => (modes(0), modes(1), modes(2), OpCode5)
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case 6 => (modes(0), modes(1), modes(2), OpCode6)
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case 7 => (modes(0), modes(1), modes(2), OpCode7)
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case 8 => (modes(0), modes(1), modes(2), OpCode8)
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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(param: Int, mode: Int, tape: Array[Int]): Int =
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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);
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case 1 => /*println("Reading "+param+" immediate");*/ param
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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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/** Writes to the tape in a manner specified by the mode */
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protected[this] def writer(param: Int, mode: Int, tape: Array[Int], value: Int): Unit =
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{
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mode match
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{
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case 0 => tape(param) = 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 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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