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• case-class-generator_2.10
• 0.6.1
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• ProductArity.scala

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class.methods.ProductArity.scala Maven / Gradle / Ivy

package com.julianpeeters.caseclass.generator
import artisanal.pickle.maker._
import scala.reflect.internal.pickling._
import org.objectweb.asm._
import Opcodes._

case class ProductArity(cw: ClassWriter, var mv: MethodVisitor, fieldData: List[EnrichedField]) {
  def dump = {
    val ICONST_VALUE = fieldData.length match {
      case 1 => ICONST_1
      case 2 => ICONST_2
      case 3 => ICONST_3
      case 4 => ICONST_4
      case 5 => ICONST_5
      case x => x

    }
    mv = cw.visitMethod(ACC_PUBLIC, "productArity", "()I", null, null);
    mv.visitCode();
    if (fieldData.length <= 5) mv.visitInsn(ICONST_VALUE.toString.toInt);
    else mv.visitIntInsn(BIPUSH, ICONST_VALUE);
    mv.visitInsn(IRETURN);
    mv.visitMaxs(1, 1);
    mv.visitEnd();
  }
}