| // Copyright (c) 2019, the R8 project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| package com.android.tools.r8.naming.methodparameters; |
| |
| import org.objectweb.asm.ClassWriter; |
| import org.objectweb.asm.Label; |
| import org.objectweb.asm.MethodVisitor; |
| import org.objectweb.asm.Opcodes; |
| import org.objectweb.asm.Type; |
| |
| public class MethodParametersTestDump implements Opcodes { |
| |
| /* The below dump was produced by the asmifier on following java code: |
| |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Parameter; |
| |
| public class MethodParametersTest { |
| |
| public static void main(String... hello) { |
| for (Method method : MethodParametersTest.class.getMethods()) { |
| for (Parameter parameter : method.getParameters()) { |
| System.out.println(method.getName() + ": " + parameter.getName()); |
| } |
| } |
| } |
| |
| public void other(int darkness, String my, Object old, boolean friend) { |
| |
| } |
| } |
| */ |
| |
| public static byte[] dump() { |
| |
| ClassWriter classWriter = new ClassWriter(0); |
| MethodVisitor methodVisitor; |
| |
| classWriter.visit( |
| V1_8, |
| ACC_PUBLIC | ACC_SUPER, |
| "com/android/tools/r8/naming/methodparameters/MethodParametersTest", |
| null, |
| "java/lang/Object", |
| null); |
| |
| classWriter.visitSource("MethodParametersTest.java", null); |
| |
| { |
| methodVisitor = classWriter.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); |
| methodVisitor.visitCode(); |
| Label label0 = new Label(); |
| methodVisitor.visitLabel(label0); |
| methodVisitor.visitLineNumber(4, label0); |
| 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 | ACC_VARARGS, "main", "([Ljava/lang/String;)V", null, null); |
| methodVisitor.visitParameter("hello", 0); |
| methodVisitor.visitCode(); |
| Label label0 = new Label(); |
| methodVisitor.visitLabel(label0); |
| methodVisitor.visitLineNumber(7, label0); |
| methodVisitor.visitLdcInsn( |
| Type.getType("Lcom/android/tools/r8/naming/methodparameters/MethodParametersTest;")); |
| methodVisitor.visitMethodInsn( |
| INVOKEVIRTUAL, "java/lang/Class", "getMethods", "()[Ljava/lang/reflect/Method;", false); |
| methodVisitor.visitVarInsn(ASTORE, 1); |
| methodVisitor.visitVarInsn(ALOAD, 1); |
| methodVisitor.visitInsn(ARRAYLENGTH); |
| methodVisitor.visitVarInsn(ISTORE, 2); |
| methodVisitor.visitInsn(ICONST_0); |
| methodVisitor.visitVarInsn(ISTORE, 3); |
| Label label1 = new Label(); |
| methodVisitor.visitLabel(label1); |
| methodVisitor.visitFrame( |
| Opcodes.F_APPEND, |
| 3, |
| new Object[] {"[Ljava/lang/reflect/Method;", Opcodes.INTEGER, Opcodes.INTEGER}, |
| 0, |
| null); |
| methodVisitor.visitVarInsn(ILOAD, 3); |
| methodVisitor.visitVarInsn(ILOAD, 2); |
| Label label2 = new Label(); |
| methodVisitor.visitJumpInsn(IF_ICMPGE, label2); |
| methodVisitor.visitVarInsn(ALOAD, 1); |
| methodVisitor.visitVarInsn(ILOAD, 3); |
| methodVisitor.visitInsn(AALOAD); |
| methodVisitor.visitVarInsn(ASTORE, 4); |
| Label label3 = new Label(); |
| methodVisitor.visitLabel(label3); |
| methodVisitor.visitLineNumber(8, label3); |
| methodVisitor.visitVarInsn(ALOAD, 4); |
| methodVisitor.visitMethodInsn( |
| INVOKEVIRTUAL, |
| "java/lang/reflect/Method", |
| "getParameters", |
| "()[Ljava/lang/reflect/Parameter;", |
| false); |
| methodVisitor.visitVarInsn(ASTORE, 5); |
| methodVisitor.visitVarInsn(ALOAD, 5); |
| methodVisitor.visitInsn(ARRAYLENGTH); |
| methodVisitor.visitVarInsn(ISTORE, 6); |
| methodVisitor.visitInsn(ICONST_0); |
| methodVisitor.visitVarInsn(ISTORE, 7); |
| Label label4 = new Label(); |
| methodVisitor.visitLabel(label4); |
| methodVisitor.visitFrame( |
| Opcodes.F_FULL, |
| 8, |
| new Object[] { |
| "[Ljava/lang/String;", |
| "[Ljava/lang/reflect/Method;", |
| Opcodes.INTEGER, |
| Opcodes.INTEGER, |
| "java/lang/reflect/Method", |
| "[Ljava/lang/reflect/Parameter;", |
| Opcodes.INTEGER, |
| Opcodes.INTEGER |
| }, |
| 0, |
| new Object[] {}); |
| methodVisitor.visitVarInsn(ILOAD, 7); |
| methodVisitor.visitVarInsn(ILOAD, 6); |
| Label label5 = new Label(); |
| methodVisitor.visitJumpInsn(IF_ICMPGE, label5); |
| methodVisitor.visitVarInsn(ALOAD, 5); |
| methodVisitor.visitVarInsn(ILOAD, 7); |
| methodVisitor.visitInsn(AALOAD); |
| methodVisitor.visitVarInsn(ASTORE, 8); |
| Label label6 = new Label(); |
| methodVisitor.visitLabel(label6); |
| methodVisitor.visitLineNumber(9, label6); |
| methodVisitor.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;"); |
| methodVisitor.visitTypeInsn(NEW, "java/lang/StringBuilder"); |
| methodVisitor.visitInsn(DUP); |
| methodVisitor.visitMethodInsn( |
| INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "()V", false); |
| methodVisitor.visitVarInsn(ALOAD, 4); |
| methodVisitor.visitMethodInsn( |
| INVOKEVIRTUAL, "java/lang/reflect/Method", "getName", "()Ljava/lang/String;", false); |
| methodVisitor.visitMethodInsn( |
| INVOKEVIRTUAL, |
| "java/lang/StringBuilder", |
| "append", |
| "(Ljava/lang/String;)Ljava/lang/StringBuilder;", |
| false); |
| methodVisitor.visitLdcInsn(": "); |
| methodVisitor.visitMethodInsn( |
| INVOKEVIRTUAL, |
| "java/lang/StringBuilder", |
| "append", |
| "(Ljava/lang/String;)Ljava/lang/StringBuilder;", |
| false); |
| methodVisitor.visitVarInsn(ALOAD, 8); |
| methodVisitor.visitMethodInsn( |
| INVOKEVIRTUAL, "java/lang/reflect/Parameter", "getName", "()Ljava/lang/String;", false); |
| methodVisitor.visitMethodInsn( |
| INVOKEVIRTUAL, |
| "java/lang/StringBuilder", |
| "append", |
| "(Ljava/lang/String;)Ljava/lang/StringBuilder;", |
| false); |
| methodVisitor.visitMethodInsn( |
| INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false); |
| methodVisitor.visitMethodInsn( |
| INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false); |
| Label label7 = new Label(); |
| methodVisitor.visitLabel(label7); |
| methodVisitor.visitLineNumber(8, label7); |
| methodVisitor.visitIincInsn(7, 1); |
| methodVisitor.visitJumpInsn(GOTO, label4); |
| methodVisitor.visitLabel(label5); |
| methodVisitor.visitLineNumber(7, label5); |
| methodVisitor.visitFrame( |
| Opcodes.F_FULL, |
| 4, |
| new Object[] { |
| "[Ljava/lang/String;", "[Ljava/lang/reflect/Method;", Opcodes.INTEGER, Opcodes.INTEGER |
| }, |
| 0, |
| new Object[] {}); |
| methodVisitor.visitIincInsn(3, 1); |
| methodVisitor.visitJumpInsn(GOTO, label1); |
| methodVisitor.visitLabel(label2); |
| methodVisitor.visitLineNumber(12, label2); |
| methodVisitor.visitFrame(Opcodes.F_CHOP, 3, null, 0, null); |
| methodVisitor.visitInsn(RETURN); |
| methodVisitor.visitMaxs(3, 9); |
| methodVisitor.visitEnd(); |
| } |
| { |
| methodVisitor = |
| classWriter.visitMethod( |
| ACC_PUBLIC, "other", "(ILjava/lang/String;Ljava/lang/Object;Z)V", null, null); |
| methodVisitor.visitParameter("darkness", 0); |
| methodVisitor.visitParameter("my", 0); |
| methodVisitor.visitParameter("old", 0); |
| methodVisitor.visitParameter("friend", 0); |
| methodVisitor.visitCode(); |
| Label label0 = new Label(); |
| methodVisitor.visitLabel(label0); |
| methodVisitor.visitLineNumber(16, label0); |
| methodVisitor.visitInsn(RETURN); |
| methodVisitor.visitMaxs(0, 5); |
| methodVisitor.visitEnd(); |
| } |
| classWriter.visitEnd(); |
| |
| return classWriter.toByteArray(); |
| } |
| } |