Update filter for Kotlin suspending functions

[Godin]

Example.kt

import kotlinx.coroutines.delay

fun nop() {
}

suspend fun example() { // line 6
  delay(0) // line 7
  nop()
}

javap -v -p ExampleKt.class

  public static final java.lang.Object example(kotlin.coroutines.Continuation<? super kotlin.Unit>);
    descriptor: (Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
    flags: ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    Code:
      stack=5, locals=4, args_size=1
         0: aload_0
         1: instanceof    #12                 // class ExampleKt$example$1
         4: ifeq          36
         7: aload_0
         8: checkcast     #12                 // class ExampleKt$example$1
        11: astore_2
        12: aload_2
        13: getfield      #16                 // Field ExampleKt$example$1.label:I
        16: ldc           #17                 // int -2147483648
        18: iand
        19: ifeq          36
        22: aload_2
        23: dup
        24: getfield      #16                 // Field ExampleKt$example$1.label:I
        27: ldc           #17                 // int -2147483648
        29: isub
        30: putfield      #16                 // Field ExampleKt$example$1.label:I
        33: goto          45
        36: new           #12                 // class ExampleKt$example$1
        39: dup
        40: aload_0
        41: invokespecial #21                 // Method ExampleKt$example$1."<init>":(Lkotlin/coroutines/Continuation;)V
        44: astore_2
        45: aload_2
        46: getfield      #25                 // Field ExampleKt$example$1.result:Ljava/lang/Object;
        49: astore_1
        50: invokestatic  #31                 // Method kotlin/coroutines/intrinsics/IntrinsicsKt.getCOROUTINE_SUSPENDED:()Ljava/lang/Object;
        53: astore_3
        54: aload_2
        55: getfield      #16                 // Field ExampleKt$example$1.label:I
        58: tableswitch   { // 0 to 1
                       0: 80
                       1: 113
                 default: 138
            }
        80: aload_1
        81: dup
        82: instanceof    #33                 // class kotlin/Result$Failure
        85: ifeq          95
        88: checkcast     #33                 // class kotlin/Result$Failure
        91: getfield      #37                 // Field kotlin/Result$Failure.exception:Ljava/lang/Throwable;
        94: athrow
        95: pop
        96: lconst_0
        97: aload_2
        98: aload_2
        99: iconst_1
       100: putfield      #16                 // Field ExampleKt$example$1.label:I
       103: invokestatic  #43                 // Method kotlinx/coroutines/DelayKt.delay:(JLkotlin/coroutines/Continuation;)Ljava/lang/Object;
       106: dup
       107: aload_3
       108: if_acmpne     130
       111: aload_3
       112: areturn
       113: aload_1
       114: dup
       115: instanceof    #33                 // class kotlin/Result$Failure
       118: ifeq          128
       121: checkcast     #33                 // class kotlin/Result$Failure
       124: getfield      #37                 // Field kotlin/Result$Failure.exception:Ljava/lang/Throwable;
       127: athrow
       128: pop
       129: aload_1
       130: pop
       131: invokestatic  #45                 // Method nop:()V
       134: getstatic     #51                 // Field kotlin/Unit.INSTANCE:Lkotlin/Unit;
       137: areturn
       138: new           #53                 // class java/lang/IllegalStateException
       141: dup
       142: ldc           #55                 // String call to 'resume' before 'invoke' with coroutine
       144: invokespecial #58                 // Method java/lang/IllegalStateException."<init>":(Ljava/lang/String;)V
       147: athrow
      LocalVariableTable:
        Start  Length  Slot  Name   Signature
           45      93     2 $continuation   Lkotlin/coroutines/Continuation;
      LineNumberTable:
        line 6: 53
        line 7: 96
        line 6: 111
        line 8: 130
        line 9: 134

[marchof]

There are two warnings in the init test which should be fixed.

Also I wonder whether is would make sense to pull out some private methods from the big match() method to clearly identify and label the different aspects (for readablity and documentation).