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Last active August 12, 2019 02:30
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A.javap
Classfile /Users/kenji/structural-subtype-javap/A.class
Last modified Aug 12, 2019; size 2453 bytes
MD5 checksum dc2e1948b339005c82b1948b25e9356f
Compiled from "A.scala"
public class A
minor version: 0
major version: 52
flags: ACC_PUBLIC, ACC_SUPER
Constant pool:
#1 = Utf8 A
#2 = Class #1 // A
#3 = Utf8 java/lang/Object
#4 = Class #3 // java/lang/Object
#5 = Utf8 A.scala
#6 = Utf8 Lscala/reflect/ScalaSignature;
#7 = Utf8 bytes
#8 = Utf8 }1Aa!)aC!)!C'\t\tICaT-9uszaAD)\t1\"AtGd-\t1I\=SK aP5oSRtD#\tEQ\"|w/A\"F-)A!8ji\")Da3\tP!11a$/4j]lWM;?i\"D\"Gn\:f)!
#9 = Utf8 java/lang/invoke/MethodHandles$Lookup
#10 = Class #9 // java/lang/invoke/MethodHandles$Lookup
#11 = Utf8 java/lang/invoke/MethodHandles
#12 = Class #11 // java/lang/invoke/MethodHandles
#13 = Utf8 Lookup
#14 = Utf8 reflMethod$Method1
#15 = Utf8 (Ljava/lang/Class;)Ljava/lang/reflect/Method;
#16 = Utf8 x$1
#17 = Utf8 ()Ljava/lang/Object;
#18 = MethodType #17 // ()Ljava/lang/Object;
#19 = Utf8 scala/runtime/StructuralCallSite
#20 = Class #19 // scala/runtime/StructuralCallSite
#21 = Utf8 bootstrap
#22 = Utf8 (Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
#23 = NameAndType #21:#22 // bootstrap:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
#24 = Methodref #20.#23 // scala/runtime/StructuralCallSite.bootstrap:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
#25 = MethodHandle #6:#24 // invokestatic scala/runtime/StructuralCallSite.bootstrap:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
#26 = Utf8 apply
#27 = Utf8 ()Lscala/runtime/StructuralCallSite;
#28 = NameAndType #26:#27 // apply:()Lscala/runtime/StructuralCallSite;
#29 = InvokeDynamic #0:#28 // #0:apply:()Lscala/runtime/StructuralCallSite;
#30 = Utf8 find
#31 = NameAndType #30:#15 // find:(Ljava/lang/Class;)Ljava/lang/reflect/Method;
#32 = Methodref #20.#31 // scala/runtime/StructuralCallSite.find:(Ljava/lang/Class;)Ljava/lang/reflect/Method;
#33 = Utf8 scala/runtime/ScalaRunTime$
#34 = Class #33 // scala/runtime/ScalaRunTime$
#35 = Utf8 MODULE$
#36 = Utf8 Lscala/runtime/ScalaRunTime$;
#37 = NameAndType #35:#36 // MODULE$:Lscala/runtime/ScalaRunTime$;
#38 = Fieldref #34.#37 // scala/runtime/ScalaRunTime$.MODULE$:Lscala/runtime/ScalaRunTime$;
#39 = Utf8 close
#40 = String #39 // close
#41 = Utf8 parameterTypes
#42 = Utf8 ()[Ljava/lang/Class;
#43 = NameAndType #41:#42 // parameterTypes:()[Ljava/lang/Class;
#44 = Methodref #20.#43 // scala/runtime/StructuralCallSite.parameterTypes:()[Ljava/lang/Class;
#45 = Utf8 java/lang/Class
#46 = Class #45 // java/lang/Class
#47 = Utf8 getMethod
#48 = Utf8 (Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;
#49 = NameAndType #47:#48 // getMethod:(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;
#50 = Methodref #46.#49 // java/lang/Class.getMethod:(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;
#51 = Utf8 ensureAccessible
#52 = Utf8 (Ljava/lang/reflect/Method;)Ljava/lang/reflect/Method;
#53 = NameAndType #51:#52 // ensureAccessible:(Ljava/lang/reflect/Method;)Ljava/lang/reflect/Method;
#54 = Methodref #34.#53 // scala/runtime/ScalaRunTime$.ensureAccessible:(Ljava/lang/reflect/Method;)Ljava/lang/reflect/Method;
#55 = Utf8 add
#56 = Utf8 (Ljava/lang/Class;Ljava/lang/reflect/Method;)Ljava/lang/reflect/Method;
#57 = NameAndType #55:#56 // add:(Ljava/lang/Class;Ljava/lang/reflect/Method;)Ljava/lang/reflect/Method;
#58 = Methodref #20.#57 // scala/runtime/StructuralCallSite.add:(Ljava/lang/Class;Ljava/lang/reflect/Method;)Ljava/lang/reflect/Method;
#59 = Utf8 methodCache1
#60 = Utf8 Lscala/runtime/StructuralCallSite;
#61 = Utf8 method1
#62 = Utf8 Ljava/lang/reflect/Method;
#63 = Utf8 Ljava/lang/Class;
#64 = Utf8 java/lang/reflect/Method
#65 = Class #64 // java/lang/reflect/Method
#66 = Utf8 foo
#67 = Utf8 (Ljava/lang/Object;)V
#68 = Utf8 x
#69 = Utf8 java/lang/reflect/InvocationTargetException
#70 = Class #69 // java/lang/reflect/InvocationTargetException
#71 = Utf8 getClass
#72 = Utf8 ()Ljava/lang/Class;
#73 = NameAndType #71:#72 // getClass:()Ljava/lang/Class;
#74 = Methodref #4.#73 // java/lang/Object.getClass:()Ljava/lang/Class;
#75 = NameAndType #14:#15 // reflMethod$Method1:(Ljava/lang/Class;)Ljava/lang/reflect/Method;
#76 = Methodref #2.#75 // A.reflMethod$Method1:(Ljava/lang/Class;)Ljava/lang/reflect/Method;
#77 = Utf8 invoke
#78 = Utf8 (Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
#79 = NameAndType #77:#78 // invoke:(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
#80 = Methodref #65.#79 // java/lang/reflect/Method.invoke:(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
#81 = Utf8 getCause
#82 = Utf8 ()Ljava/lang/Throwable;
#83 = NameAndType #81:#82 // getCause:()Ljava/lang/Throwable;
#84 = Methodref #70.#83 // java/lang/reflect/InvocationTargetException.getCause:()Ljava/lang/Throwable;
#85 = Utf8 scala/runtime/BoxedUnit
#86 = Class #85 // scala/runtime/BoxedUnit
#87 = Utf8 UNIT
#88 = Utf8 Lscala/runtime/BoxedUnit;
#89 = NameAndType #87:#88 // UNIT:Lscala/runtime/BoxedUnit;
#90 = Fieldref #86.#89 // scala/runtime/BoxedUnit.UNIT:Lscala/runtime/BoxedUnit;
#91 = Utf8 1
#92 = Utf8 Ljava/lang/reflect/InvocationTargetException;
#93 = Utf8 qual1
#94 = Utf8 Ljava/lang/Object;
#95 = Utf8 this
#96 = Utf8 LA;
#97 = Utf8 <init>
#98 = Utf8 ()V
#99 = NameAndType #97:#98 // "<init>":()V
#100 = Methodref #4.#99 // java/lang/Object."<init>":()V
#101 = Utf8 Code
#102 = Utf8 StackMapTable
#103 = Utf8 LineNumberTable
#104 = Utf8 LocalVariableTable
#105 = Utf8 MethodParameters
#106 = Utf8 InnerClasses
#107 = Utf8 SourceFile
#108 = Utf8 RuntimeVisibleAnnotations
#109 = Utf8 BootstrapMethods
#110 = Utf8 ScalaInlineInfo
#111 = Utf8 ScalaSig
{
public static java.lang.reflect.Method reflMethod$Method1(java.lang.Class);
descriptor: (Ljava/lang/Class;)Ljava/lang/reflect/Method;
flags: ACC_PUBLIC, ACC_STATIC
Code:
stack=4, locals=3, args_size=1
0: invokedynamic #29, 0 // InvokeDynamic #0:apply:()Lscala/runtime/StructuralCallSite;
5: astore_1
6: aload_1
7: aload_0
8: invokevirtual #32 // Method scala/runtime/StructuralCallSite.find:(Ljava/lang/Class;)Ljava/lang/reflect/Method;
11: astore_2
12: aload_2
13: ifnull 18
16: aload_2
17: areturn
18: getstatic #38 // Field scala/runtime/ScalaRunTime$.MODULE$:Lscala/runtime/ScalaRunTime$;
21: aload_0
22: ldc #40 // String close
24: aload_1
25: invokevirtual #44 // Method scala/runtime/StructuralCallSite.parameterTypes:()[Ljava/lang/Class;
28: invokevirtual #50 // Method java/lang/Class.getMethod:(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;
31: invokevirtual #54 // Method scala/runtime/ScalaRunTime$.ensureAccessible:(Ljava/lang/reflect/Method;)Ljava/lang/reflect/Method;
34: astore_2
35: aload_1
36: aload_0
37: aload_2
38: invokevirtual #58 // Method scala/runtime/StructuralCallSite.add:(Ljava/lang/Class;Ljava/lang/reflect/Method;)Ljava/lang/reflect/Method;
41: pop
42: aload_2
43: areturn
StackMapTable: number_of_entries = 1
frame_type = 253 /* append */
offset_delta = 18
locals = [ class scala/runtime/StructuralCallSite, class java/lang/reflect/Method ]
LineNumberTable:
line 3: 0
LocalVariableTable:
Start Length Slot Name Signature
5 39 1 methodCache1 Lscala/runtime/StructuralCallSite;
11 33 2 method1 Ljava/lang/reflect/Method;
0 44 0 x$1 Ljava/lang/Class;
MethodParameters:
Name Flags
x$1 final
public void foo(java.lang.Object);
descriptor: (Ljava/lang/Object;)V
flags: ACC_PUBLIC
Code:
stack=3, locals=4, args_size=2
0: aload_1
1: astore_2
2: aload_2
3: invokevirtual #74 // Method java/lang/Object.getClass:()Ljava/lang/Class;
6: invokestatic #76 // Method reflMethod$Method1:(Ljava/lang/Class;)Ljava/lang/reflect/Method;
9: aload_2
10: iconst_0
11: anewarray #4 // class java/lang/Object
14: invokevirtual #80 // Method java/lang/reflect/Method.invoke:(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
17: goto 26
20: astore_3
21: aload_3
22: invokevirtual #84 // Method java/lang/reflect/InvocationTargetException.getCause:()Ljava/lang/Throwable;
25: athrow
26: pop
27: getstatic #90 // Field scala/runtime/BoxedUnit.UNIT:Lscala/runtime/BoxedUnit;
30: pop
31: return
Exception table:
from to target type
2 17 20 Class java/lang/reflect/InvocationTargetException
StackMapTable: number_of_entries = 2
frame_type = 255 /* full_frame */
offset_delta = 20
locals = [ class A, class java/lang/Object, class java/lang/Object ]
stack = [ class java/lang/reflect/InvocationTargetException ]
frame_type = 69 /* same_locals_1_stack_item */
stack = [ class java/lang/Object ]
LineNumberTable:
line 3: 0
LocalVariableTable:
Start Length Slot Name Signature
20 6 3 1 Ljava/lang/reflect/InvocationTargetException;
1 30 2 qual1 Ljava/lang/Object;
0 32 0 this LA;
0 32 1 x Ljava/lang/Object;
MethodParameters:
Name Flags
x final
public A();
descriptor: ()V
flags: ACC_PUBLIC
Code:
stack=1, locals=1, args_size=1
0: aload_0
1: invokespecial #100 // Method java/lang/Object."<init>":()V
4: return
LineNumberTable:
line 5: 0
line 1: 4
LocalVariableTable:
Start Length Slot Name Signature
0 5 0 this LA;
}
InnerClasses:
public static final #13= #10 of #12; //Lookup=class java/lang/invoke/MethodHandles$Lookup of class java/lang/invoke/MethodHandles
SourceFile: "A.scala"
RuntimeVisibleAnnotations:
0: #6(#7=s#8)
BootstrapMethods:
0: #25 invokestatic scala/runtime/StructuralCallSite.bootstrap:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
Method arguments:
#18 ()Ljava/lang/Object;
Error: unknown attribute
ScalaInlineInfo: length = 0x13
01 00 00 03 00 61 00 62 00 00 42 00 43 00 00 0E
00 0F 00
Error: unknown attribute
ScalaSig: length = 0x3
05 02 00
Raw
A.scala
class A {
def foo(x: {def close(): Unit}): Unit = {
x.close()
}
}
Raw
decompiled-A.java
// http://www.javadecompilers.com
import scala.runtime.BoxedUnit;
import java.lang.reflect.InvocationTargetException;
import scala.runtime.StructuralCallSite;
import scala.runtime.ScalaRunTime$;
import java.lang.reflect.Method;
import scala.reflect.ScalaSignature;
//
// Decompiled by Procyon v0.5.36
//
@ScalaSignature(bytes = "\u0006\u0005}1Aa\u0001\u0003\u0001\u000f!)a\u0002\u0001C\u0001\u001f!)!\u0003\u0001C\u0001'\t\t\u0011IC\u0001\u0006\u0003\u001daT-\u001c9usz\u001a\u0001a\u0005\u0002\u0001\u0011A\u0011\u0011\u0002D\u0007\u0002\u0015)\t1\"A\u0003tG\u0006d\u0017-\u0003\u0002\u000e\u0015\t1\u0011I\\=SK\u001a\fa\u0001P5oSRtD#\u0001\t\u0011\u0005E\u0001Q\"\u0001\u0003\u0002\u0007\u0019|w\u000e\u0006\u0002\u0015/A\u0011\u0011\"F\u0005\u0003-)\u0011A!\u00168ji\")\u0001D\u0001a\u00013\u0005\t\u0001P\u0005\u0002\u001b\u0011\u0019!1\u0004\u0001\u0001\u001a\u00051a$/\u001a4j]\u0016lWM\u001c;?\u0011\u0015i\"D\"\u0001\u001f\u0003\u0015\u0019Gn\\:f)\u0005!\u0002")
public class A
{
public static Method reflMethod$Method1(final Class x$1) {
final StructuralCallSite methodCache1 = invokedynamic(apply:()Lscala/runtime/StructuralCallSite;);
Method method1 = methodCache1.find(x$1);
if (method1 != null) {
return method1;
}
method1 = ScalaRunTime$.MODULE$.ensureAccessible(x$1.getMethod("close", (Class[])methodCache1.parameterTypes()));
methodCache1.add(x$1, method1);
return method1;
}
public void foo(final Object x) {
final Object qual1 = x;
try {
reflMethod$Method1(qual1.getClass()).invoke(qual1, new Object[0]);
}
catch (InvocationTargetException 1) {
throw 1.getCause();
}
final BoxedUnit unit = BoxedUnit.UNIT;
}
}
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