package com.zarbosoft.semicompiled;
import java.lang.String;
class Main {
public static void myMain(String x) {
int y;
switch (x) {
case "query":
y = 0;
break;
case "midruffian":
y = 33;
break;
}
}
}
Classfile /tmp/semicompiled-tWLWsiZX-5416914670955621240/com/zarbosoft/semicompiled/Main.class
Last modified Jun 2, 2024; size 494 bytes
MD5 checksum d58e737d8b7d339147dec50ee69c17ef
class com.zarbosoft.semicompiled.Main
minor version: 0
major version: 52
flags: (0x0020) ACC_SUPER
this_class: #6 // com/zarbosoft/semicompiled/Main
super_class: #7 // java/lang/Object
interfaces: 0, fields: 0, methods: 2, attributes: 0
Constant pool:
#1 = Methodref #7.#17 // java/lang/Object."<init>":()V
#2 = Methodref #14.#18 // java/lang/String.hashCode:()I
#3 = String #19 // query
#4 = Methodref #14.#20 // java/lang/String.equals:(Ljava/lang/Object;)Z
#5 = String #21 // midruffian
#6 = Class #22 // com/zarbosoft/semicompiled/Main
#7 = Class #23 // java/lang/Object
#8 = Utf8 <init>
#9 = Utf8 ()V
#10 = Utf8 Code
#11 = Utf8 myMain
#12 = Utf8 (Ljava/lang/String;)V
#13 = Utf8 StackMapTable
#14 = Class #24 // java/lang/String
#15 = Utf8 MethodParameters
#16 = Utf8 x
#17 = NameAndType #8:#9 // "<init>":()V
#18 = NameAndType #25:#26 // hashCode:()I
#19 = Utf8 query
#20 = NameAndType #27:#28 // equals:(Ljava/lang/Object;)Z
#21 = Utf8 midruffian
#22 = Utf8 com/zarbosoft/semicompiled/Main
#23 = Utf8 java/lang/Object
#24 = Utf8 java/lang/String
#25 = Utf8 hashCode
#26 = Utf8 ()I
#27 = Utf8 equals
#28 = Utf8 (Ljava/lang/Object;)Z
{
com.zarbosoft.semicompiled.Main();
descriptor: ()V
flags: (0x0000)
Code:
stack=1, locals=1, args_size=1
0: aload_0
1: invokespecial #1 // Method java/lang/Object."<init>":()V
4: return
public static void myMain(java.lang.String);
descriptor: (Ljava/lang/String;)V
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=2, locals=4, args_size=1
0: aload_0
1: astore_2
2: iconst_m1
3: istore_3
4: aload_2
5: invokevirtual #2 // Method java/lang/String.hashCode:()I
8: lookupswitch { // 2
-1018761749: 50
107944136: 36
default: 61
}
36: aload_2
37: ldc #3 // String query
39: invokevirtual #4 // Method java/lang/String.equals:(Ljava/lang/Object;)Z
42: ifeq 61
45: iconst_0
46: istore_3
47: goto 61
50: aload_2
51: ldc #5 // String midruffian
53: invokevirtual #4 // Method java/lang/String.equals:(Ljava/lang/Object;)Z
56: ifeq 61
59: iconst_1
60: istore_3
61: iload_3
62: lookupswitch { // 2
0: 88
1: 93
default: 96
}
88: iconst_0
89: istore_1
90: goto 96
93: bipush 33
95: istore_1
96: return
StackMapTable: number_of_entries = 6
frame_type = 254 /* append */
offset_delta = 36
locals = [ top, class java/lang/String, int ]
frame_type = 13 /* same */
frame_type = 10 /* same */
frame_type = 26 /* same */
frame_type = 4 /* same */
frame_type = 248 /* chop */
offset_delta = 2
MethodParameters:
Name Flags
x
}
package asm.com.zarbosoft.semicompiled;
import org.objectweb.asm.AnnotationVisitor;
import org.objectweb.asm.Attribute;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.ConstantDynamic;
import org.objectweb.asm.FieldVisitor;
import org.objectweb.asm.Handle;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.RecordComponentVisitor;
import org.objectweb.asm.Type;
import org.objectweb.asm.TypePath;
public class MainDump implements Opcodes {
public static byte[] dump() throws Exception {
ClassWriter classWriter = new ClassWriter(0);
FieldVisitor fieldVisitor;
RecordComponentVisitor recordComponentVisitor;
MethodVisitor methodVisitor;
AnnotationVisitor annotationVisitor0;
classWriter.visit(
V1_8, ACC_SUPER, "com/zarbosoft/semicompiled/Main", null, "java/lang/Object", null);
{
methodVisitor = classWriter.visitMethod(0, "<init>", "()V", null, null);
methodVisitor.visitCode();
methodVisitor.visitVarInsn(ALOAD, 0);
methodVisitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
methodVisitor.visitInsn(RETURN);
methodVisitor.visitMaxs(1, 1);
methodVisitor.visitEnd();
}
{
methodVisitor =
classWriter.visitMethod(
ACC_PUBLIC | ACC_STATIC, "myMain", "(Ljava/lang/String;)V", null, null);
methodVisitor.visitParameter("x", 0);
methodVisitor.visitCode();
methodVisitor.visitVarInsn(ALOAD, 0);
methodVisitor.visitVarInsn(ASTORE, 2);
methodVisitor.visitInsn(ICONST_M1);
methodVisitor.visitVarInsn(ISTORE, 3);
methodVisitor.visitVarInsn(ALOAD, 2);
methodVisitor.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "hashCode", "()I", false);
Label label0 = new Label();
Label label1 = new Label();
Label label2 = new Label();
methodVisitor.visitLookupSwitchInsn(
label2, new int[] {-1018761749, 107944136}, new Label[] {label0, label1});
methodVisitor.visitLabel(label1);
methodVisitor.visitFrame(
Opcodes.F_APPEND,
3,
new Object[] {Opcodes.TOP, "java/lang/String", Opcodes.INTEGER},
0,
null);
methodVisitor.visitVarInsn(ALOAD, 2);
methodVisitor.visitLdcInsn("query");
methodVisitor.visitMethodInsn(
INVOKEVIRTUAL, "java/lang/String", "equals", "(Ljava/lang/Object;)Z", false);
methodVisitor.visitJumpInsn(IFEQ, label2);
methodVisitor.visitInsn(ICONST_0);
methodVisitor.visitVarInsn(ISTORE, 3);
methodVisitor.visitJumpInsn(GOTO, label2);
methodVisitor.visitLabel(label0);
methodVisitor.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
methodVisitor.visitVarInsn(ALOAD, 2);
methodVisitor.visitLdcInsn("midruffian");
methodVisitor.visitMethodInsn(
INVOKEVIRTUAL, "java/lang/String", "equals", "(Ljava/lang/Object;)Z", false);
methodVisitor.visitJumpInsn(IFEQ, label2);
methodVisitor.visitInsn(ICONST_1);
methodVisitor.visitVarInsn(ISTORE, 3);
methodVisitor.visitLabel(label2);
methodVisitor.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
methodVisitor.visitVarInsn(ILOAD, 3);
Label label3 = new Label();
Label label4 = new Label();
Label label5 = new Label();
methodVisitor.visitLookupSwitchInsn(label5, new int[] {0, 1}, new Label[] {label3, label4});
methodVisitor.visitLabel(label3);
methodVisitor.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
methodVisitor.visitInsn(ICONST_0);
methodVisitor.visitVarInsn(ISTORE, 1);
methodVisitor.visitJumpInsn(GOTO, label5);
methodVisitor.visitLabel(label4);
methodVisitor.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
methodVisitor.visitIntInsn(BIPUSH, 33);
methodVisitor.visitVarInsn(ISTORE, 1);
methodVisitor.visitLabel(label5);
methodVisitor.visitFrame(Opcodes.F_CHOP, 3, null, 0, null);
methodVisitor.visitInsn(RETURN);
methodVisitor.visitMaxs(2, 4);
methodVisitor.visitEnd();
}
classWriter.visitEnd();
return classWriter.toByteArray();
}
}
Classfile /tmp/semicompiled-tWLWsiZX-5416914670955621240/com/zarbosoft/semicompiled/Main.class
Last modified Jun 2, 2024; size 712 bytes
MD5 checksum aefcbdd590cdede067cec70e8063b07f
Compiled from "Main.java"
class com.zarbosoft.semicompiled.Main
minor version: 0
major version: 52
flags: (0x0020) ACC_SUPER
this_class: #6 // com/zarbosoft/semicompiled/Main
super_class: #7 // java/lang/Object
interfaces: 0, fields: 0, methods: 2, attributes: 1
Constant pool:
#1 = Methodref #7.#26 // java/lang/Object."<init>":()V
#2 = Methodref #22.#27 // java/lang/String.hashCode:()I
#3 = String #28 // query
#4 = Methodref #22.#29 // java/lang/String.equals:(Ljava/lang/Object;)Z
#5 = String #30 // midruffian
#6 = Class #31 // com/zarbosoft/semicompiled/Main
#7 = Class #32 // java/lang/Object
#8 = Utf8 <init>
#9 = Utf8 ()V
#10 = Utf8 Code
#11 = Utf8 LineNumberTable
#12 = Utf8 LocalVariableTable
#13 = Utf8 this
#14 = Utf8 Lcom/zarbosoft/semicompiled/Main;
#15 = Utf8 myMain
#16 = Utf8 (Ljava/lang/String;)V
#17 = Utf8 y
#18 = Utf8 I
#19 = Utf8 x
#20 = Utf8 Ljava/lang/String;
#21 = Utf8 StackMapTable
#22 = Class #33 // java/lang/String
#23 = Utf8 MethodParameters
#24 = Utf8 SourceFile
#25 = Utf8 Main.java
#26 = NameAndType #8:#9 // "<init>":()V
#27 = NameAndType #34:#35 // hashCode:()I
#28 = Utf8 query
#29 = NameAndType #36:#37 // equals:(Ljava/lang/Object;)Z
#30 = Utf8 midruffian
#31 = Utf8 com/zarbosoft/semicompiled/Main
#32 = Utf8 java/lang/Object
#33 = Utf8 java/lang/String
#34 = Utf8 hashCode
#35 = Utf8 ()I
#36 = Utf8 equals
#37 = Utf8 (Ljava/lang/Object;)Z
{
com.zarbosoft.semicompiled.Main();
descriptor: ()V
flags: (0x0000)
Code:
stack=1, locals=1, args_size=1
0: aload_0
1: invokespecial #1 // Method java/lang/Object."<init>":()V
4: return
LineNumberTable:
line 5: 0
LocalVariableTable:
Start Length Slot Name Signature
0 5 0 this Lcom/zarbosoft/semicompiled/Main;
public static void myMain(java.lang.String);
descriptor: (Ljava/lang/String;)V
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=2, locals=4, args_size=1
0: aload_0
1: astore_2
2: iconst_m1
3: istore_3
4: aload_2
5: invokevirtual #2 // Method java/lang/String.hashCode:()I
8: lookupswitch { // 2
-1018761749: 50
107944136: 36
default: 61
}
36: aload_2
37: ldc #3 // String query
39: invokevirtual #4 // Method java/lang/String.equals:(Ljava/lang/Object;)Z
42: ifeq 61
45: iconst_0
46: istore_3
47: goto 61
50: aload_2
51: ldc #5 // String midruffian
53: invokevirtual #4 // Method java/lang/String.equals:(Ljava/lang/Object;)Z
56: ifeq 61
59: iconst_1
60: istore_3
61: iload_3
62: lookupswitch { // 2
0: 88
1: 93
default: 96
}
88: iconst_0
89: istore_1
90: goto 96
93: bipush 33
95: istore_1
96: return
LineNumberTable:
line 7: 0
line 8: 96
LocalVariableTable:
Start Length Slot Name Signature
90 3 1 y I
0 97 0 x Ljava/lang/String;
StackMapTable: number_of_entries = 6
frame_type = 254 /* append */
offset_delta = 36
locals = [ top, class java/lang/String, int ]
frame_type = 13 /* same */
frame_type = 10 /* same */
frame_type = 26 /* same */
frame_type = 4 /* same */
frame_type = 248 /* chop */
offset_delta = 2
MethodParameters:
Name Flags
x
}
SourceFile: "Main.java"
package asm.com.zarbosoft.semicompiled;
import org.objectweb.asm.AnnotationVisitor;
import org.objectweb.asm.Attribute;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.ConstantDynamic;
import org.objectweb.asm.FieldVisitor;
import org.objectweb.asm.Handle;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.RecordComponentVisitor;
import org.objectweb.asm.Type;
import org.objectweb.asm.TypePath;
public class MainDump implements Opcodes {
public static byte[] dump() throws Exception {
ClassWriter classWriter = new ClassWriter(0);
FieldVisitor fieldVisitor;
RecordComponentVisitor recordComponentVisitor;
MethodVisitor methodVisitor;
AnnotationVisitor annotationVisitor0;
classWriter.visit(
V1_8, ACC_SUPER, "com/zarbosoft/semicompiled/Main", null, "java/lang/Object", null);
classWriter.visitSource("Main.java", null);
{
methodVisitor = classWriter.visitMethod(0, "<init>", "()V", null, null);
methodVisitor.visitCode();
Label label0 = new Label();
methodVisitor.visitLabel(label0);
methodVisitor.visitLineNumber(5, label0);
methodVisitor.visitVarInsn(ALOAD, 0);
methodVisitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
methodVisitor.visitInsn(RETURN);
Label label1 = new Label();
methodVisitor.visitLabel(label1);
methodVisitor.visitLocalVariable(
"this", "Lcom/zarbosoft/semicompiled/Main;", null, label0, label1, 0);
methodVisitor.visitMaxs(1, 1);
methodVisitor.visitEnd();
}
{
methodVisitor =
classWriter.visitMethod(
ACC_PUBLIC | ACC_STATIC, "myMain", "(Ljava/lang/String;)V", null, null);
methodVisitor.visitParameter("x", 0);
methodVisitor.visitCode();
Label label0 = new Label();
methodVisitor.visitLabel(label0);
methodVisitor.visitLineNumber(7, label0);
methodVisitor.visitVarInsn(ALOAD, 0);
methodVisitor.visitVarInsn(ASTORE, 2);
methodVisitor.visitInsn(ICONST_M1);
methodVisitor.visitVarInsn(ISTORE, 3);
methodVisitor.visitVarInsn(ALOAD, 2);
methodVisitor.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "hashCode", "()I", false);
Label label1 = new Label();
Label label2 = new Label();
Label label3 = new Label();
methodVisitor.visitLookupSwitchInsn(
label3, new int[] {-1018761749, 107944136}, new Label[] {label1, label2});
methodVisitor.visitLabel(label2);
methodVisitor.visitFrame(
Opcodes.F_APPEND,
3,
new Object[] {Opcodes.TOP, "java/lang/String", Opcodes.INTEGER},
0,
null);
methodVisitor.visitVarInsn(ALOAD, 2);
methodVisitor.visitLdcInsn("query");
methodVisitor.visitMethodInsn(
INVOKEVIRTUAL, "java/lang/String", "equals", "(Ljava/lang/Object;)Z", false);
methodVisitor.visitJumpInsn(IFEQ, label3);
methodVisitor.visitInsn(ICONST_0);
methodVisitor.visitVarInsn(ISTORE, 3);
methodVisitor.visitJumpInsn(GOTO, label3);
methodVisitor.visitLabel(label1);
methodVisitor.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
methodVisitor.visitVarInsn(ALOAD, 2);
methodVisitor.visitLdcInsn("midruffian");
methodVisitor.visitMethodInsn(
INVOKEVIRTUAL, "java/lang/String", "equals", "(Ljava/lang/Object;)Z", false);
methodVisitor.visitJumpInsn(IFEQ, label3);
methodVisitor.visitInsn(ICONST_1);
methodVisitor.visitVarInsn(ISTORE, 3);
methodVisitor.visitLabel(label3);
methodVisitor.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
methodVisitor.visitVarInsn(ILOAD, 3);
Label label4 = new Label();
Label label5 = new Label();
Label label6 = new Label();
methodVisitor.visitLookupSwitchInsn(label6, new int[] {0, 1}, new Label[] {label4, label5});
methodVisitor.visitLabel(label4);
methodVisitor.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
methodVisitor.visitInsn(ICONST_0);
methodVisitor.visitVarInsn(ISTORE, 1);
Label label7 = new Label();
methodVisitor.visitLabel(label7);
methodVisitor.visitJumpInsn(GOTO, label6);
methodVisitor.visitLabel(label5);
methodVisitor.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
methodVisitor.visitIntInsn(BIPUSH, 33);
methodVisitor.visitVarInsn(ISTORE, 1);
methodVisitor.visitLabel(label6);
methodVisitor.visitLineNumber(8, label6);
methodVisitor.visitFrame(Opcodes.F_CHOP, 3, null, 0, null);
methodVisitor.visitInsn(RETURN);
Label label8 = new Label();
methodVisitor.visitLabel(label8);
methodVisitor.visitLocalVariable("y", "I", null, label7, label5, 1);
methodVisitor.visitLocalVariable("x", "Ljava/lang/String;", null, label0, label8, 0);
methodVisitor.visitMaxs(2, 4);
methodVisitor.visitEnd();
}
classWriter.visitEnd();
return classWriter.toByteArray();
}
}
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