[1.7.0-feature] 代码优化

Author: crazyqiang

lib_bytecode/src/main/java/org/ninetripods/lib_bytecode/asm/AClassVisitor.kt

@@ -2,14 +2,35 @@ package org.ninetripods.lib_bytecode.asm
 
 import org.objectweb.asm.*
 
+/**
+ * use[#org.ninetripods.mq.study.customView.alipayView.AlipayView]
+find class: AlipayView.class
+visit(52,4128,org/ninetripods/mq/study/customView/alipayView/AlipayView$1:java/lang/Object,null,[Ljava.lang.String;@4ab48b2b)
+visitSource(AlipayView.java, null)
+visitOuterClass(org/ninetripods/mq/study/customView/alipayView/AlipayView, null, null)
+visitInnerClass(org/ninetripods/mq/study/customView/alipayView/AlipayView$1, null, null, 4104)
+visitInnerClass(org/ninetripods/mq/study/customView/alipayView/AlipayView$State, org/ninetripods/mq/study/customView/alipayView/AlipayView, State, 16408)
+visitField(4120,$SwitchMap$org$ninetripods$mq$study$customView$alipayView$AlipayView$State, [I, null, null)
+visitMethod(8, <clinit>, ()V, null, null)
+CustomMethodVisitor: visitInsn opcode 190
+CustomMethodVisitor: visitInsn opcode 4
+CustomMethodVisitor: visitInsn opcode 79
+CustomMethodVisitor: visitInsn opcode 5
+CustomMethodVisitor: visitInsn opcode 79
+CustomMethodVisitor: visitInsn opcode 6
+CustomMethodVisitor: visitInsn opcode 79
+CustomMethodVisitor: visitInsn opcode 177
+visitEnd()
+ */
 class AClassVisitor(api: Int, classVisitor: ClassVisitor? = null) :
     ClassVisitor(api, classVisitor) {
 
     /**
+     * 如：visit(52,4128,org/ninetripods/mq/study/customView/alipayView/AlipayView$1:java/lang/Object,null,[Ljava.lang.String;@4ab48b2b)
      * @param version JDK版本  例如返回52，代表是是JDK1.8
-     * @param access
+     * @param access 修饰字段 如:Opcodes.ACC_PUBLIC + Opcodes.ACC_ABSTRACT + Opcodes.ACC_INTERFACE
      * @param name 类名
-     * @param signature
+     * @param signature 泛型
      * @param superName 父类名
      * @param interfaces
      */
@@ -21,11 +42,12 @@ class AClassVisitor(api: Int, classVisitor: ClassVisitor? = null) :
         superName: String?,
         interfaces: Array<out String>?,
     ) {
-        println("visit($version,$access,$name:$superName,$signature,$interfaces)")
+        println("visit($version,$access,$name,$superName,$signature,$interfaces)")
         super.visit(version, access, name, signature, superName, interfaces)
     }
 
     /**
+     * 如：visitSource(AlipayView.java, null)
      * @param source
      * @param debug
      */
@@ -35,6 +57,7 @@ class AClassVisitor(api: Int, classVisitor: ClassVisitor? = null) :
     }
 
     /**
+     * 如：visitOuterClass(org/ninetripods/mq/study/customView/alipayView/AlipayView, null, null)
      * @param owner
      * @param name
      * @param descriptor
@@ -63,6 +86,8 @@ class AClassVisitor(api: Int, classVisitor: ClassVisitor? = null) :
     }
 
     /**
+     * 如：visitInnerClass(org/ninetripods/mq/study/customView/alipayView/AlipayView$1, null, null, 4104)
+     *    visitInnerClass(org/ninetripods/mq/study/customView/alipayView/AlipayView$State, org/ninetripods/mq/study/customView/alipayView/AlipayView, State, 16408)
      * @param name
      * @param outerName
      * @param innerName
@@ -79,6 +104,7 @@ class AClassVisitor(api: Int, classVisitor: ClassVisitor? = null) :
     }
 
     /**
+     * 如：visitField(4120,$SwitchMap$org$ninetripods$mq$study$customView$alipayView$AlipayView$State, [I, null, null)
      * @param access
      * @param name
      * @param descriptor
@@ -93,11 +119,12 @@ class AClassVisitor(api: Int, classVisitor: ClassVisitor? = null) :
         signature: String?,
         value: Any?,
     ): FieldVisitor {
-        println("visitField($access,$name, $descriptor, $signature, $value)")
+        println("visitField($access,$name,$descriptor,$signature,$value)")
         return super.visitField(access, name, descriptor, signature, value)
     }
 
     /**
+     * 如：visitMethod(8, <clinit>, ()V, null, null)
      * @param access
      * @param name
      * @param descriptor

lib_bytecode/src/main/java/org/ninetripods/lib_bytecode/asm/AMethodVisitor.kt

@@ -17,7 +17,17 @@ class C {
     }
 }
 
-class CustomMethodVisitor(var api: Int, var mv: MethodVisitor) : MethodVisitor(api, mv) {
+/**
+CustomMethodVisitor: visitInsn opcode 190
+CustomMethodVisitor: visitInsn opcode 4
+CustomMethodVisitor: visitInsn opcode 79
+CustomMethodVisitor: visitInsn opcode 5
+CustomMethodVisitor: visitInsn opcode 79
+CustomMethodVisitor: visitInsn opcode 6
+CustomMethodVisitor: visitInsn opcode 79
+CustomMethodVisitor: visitInsn opcode 177
+ */
+class CustomMethodVisitor(api: Int, mv: MethodVisitor) : MethodVisitor(api, mv) {
 
     override fun visitCode() {
         mv.visitCode()

lib_bytecode/src/main/java/org/ninetripods/lib_bytecode/asm/MethodTimeCostTest1.java

@@ -1,7 +1,7 @@
 //package org.ninetripods.lib_bytecode.asm
 //
 //import org.ninetripods.lib_bytecode.BConstant
-//import org.ninetripods.lib_bytecode.MethodTimeCostTest
+//import org.ninetripods.lib_bytecode.asm.demo.MethodTimeCostTest
 //import org.ninetripods.lib_bytecode.log
 //import org.ninetripods.lib_bytecode.util.Loader
 //import org.ninetripods.lib_bytecode.util.decodeAcc

lib_bytecode/src/main/java/org/ninetripods/lib_bytecode/asm/AAdviceAdapter.kt renamed to lib_bytecode/src/main/java/org/ninetripods/lib_bytecode/asm/demo/AAdviceAdapter.kt

@@ -1,31 +1,32 @@
-package org.ninetripods.lib_bytecode.asm;
+package org.ninetripods.lib_bytecode.asm.demo;
+
+import static org.ninetripods.lib_bytecode.BConstantKt.log;
+import static org.ninetripods.lib_bytecode.asm.demo.ATimeCostClassVisitorKt.FIELD_NAME_ADD;
 
 import org.ninetripods.lib_bytecode.BConstant;
-import org.ninetripods.lib_bytecode.MethodTimeCostTest;
 import org.ninetripods.lib_bytecode.util.Loader;
 import org.objectweb.asm.ClassReader;
 import org.objectweb.asm.ClassVisitor;
 import org.objectweb.asm.ClassWriter;
 
 import java.io.IOException;
-
-import static org.ninetripods.lib_bytecode.BConstantKt.log;
-import static org.ninetripods.lib_bytecode.asm.AddTimeCostVisitorKt.FIELD_NAME_ADD;
+import java.util.Arrays;
 
 public class AExecutor {
 
     public static void main(String[] args) {
         try {
             ClassReader classReader = new ClassReader(MethodTimeCostTest.class.getName());
             ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_MAXS);
-            ClassVisitor classVisitor = new AddTimeCostVisitor(BConstant.ASM9, classWriter);
+            ClassVisitor classVisitor = new ATimeCostClassVisitor(BConstant.ASM9, classWriter);
             classReader.accept(classVisitor, ClassReader.EXPAND_FRAMES);
 
             Loader loader = new Loader();
             try {
+                log("classWriter ByteArray: " + Arrays.toString(classWriter.toByteArray()));
                 Class addTimeClass = loader.defineClass(MethodTimeCostTest.class.getName(), classWriter.toByteArray());
                 Object instance = addTimeClass.newInstance();
-                addTimeClass.getDeclaredMethod("addTimeCostMonitor").invoke(addTimeClass);
+                addTimeClass.getDeclaredMethod("addTimeCostMonitor").invoke(instance);
                 Long timeCost = addTimeClass.getDeclaredField(FIELD_NAME_ADD).getLong(instance);
                 log("timeCost:" + timeCost);
             } catch (Exception e) {

lib_bytecode/src/main/java/org/ninetripods/lib_bytecode/asm/AExecutor.java renamed to lib_bytecode/src/main/java/org/ninetripods/lib_bytecode/asm/demo/AExecutor.java

@@ -1,4 +1,4 @@
-package org.ninetripods.lib_bytecode.asm
+package org.ninetripods.lib_bytecode.asm.demo
 
 import org.ninetripods.lib_bytecode.log
 import org.ninetripods.lib_bytecode.util.decodeAcc
@@ -10,11 +10,42 @@ import org.objectweb.asm.commons.AdviceAdapter
 
 const val FIELD_NAME_ADD: String = "timeCost" //新增属性名称
 
-class AddTimeCostVisitor(api: Int, classVisitor: ClassVisitor) :
+/**
+ * 方法耗时统计
+ * @param api
+ * @param classVisitor
+visit(): owner-org/ninetripods/lib_bytecode/asm/demo/MethodTimeCostTest
+visitMethod(): access-ACC_PUBLIC , name-<init>, descriptor-()V, signature-null, exceptions-null
+visitMethod(): access-ACC_PUBLIC ACC_FINAL , name-getTimeCost, descriptor-()J, signature-null, exceptions-null
+onMethodEnter():
+visitFieldInsn(): opcode-180, owner-org/ninetripods/lib_bytecode/asm/demo/MethodTimeCostTest, name-timeCost, descriptor-J
+onMethodExit(): opcode-LRETURN
+visitMethod(): access-ACC_PUBLIC ACC_FINAL , name-setTimeCost, descriptor-(J)V, signature-null, exceptions-null
+onMethodEnter():
+visitFieldInsn(): opcode-181, owner-org/ninetripods/lib_bytecode/asm/demo/MethodTimeCostTest, name-timeCost, descriptor-J
+onMethodExit(): opcode-RETURN
+visitMethod(): access-ACC_PUBLIC ACC_FINAL , name-addTimeCostMonitor, descriptor-()V, signature-null, exceptions-null
+onMethodEnter():
+visitFieldInsn(): opcode-181, owner-org/ninetripods/lib_bytecode/asm/demo/MethodTimeCostTest, name-timeCost, descriptor-J
+visitFieldInsn(): opcode-180, owner-org/ninetripods/lib_bytecode/asm/demo/MethodTimeCostTest, name-timeCost, descriptor-J
+visitFieldInsn(): opcode-178, owner-java/lang/System, name-out, descriptor-Ljava/io/PrintStream;
+onMethodExit(): opcode-RETURN
+visitEnd():
+ */
+class ATimeCostClassVisitor(api: Int, classVisitor: ClassVisitor) :
     ClassVisitor(api, classVisitor) {
 
     private var owner = ""
 
+    /**
+     * 如：visit(): owner-org/ninetripods/lib_bytecode/asm/demo/MethodTimeCostTest
+     * @param version
+     * @param access
+     * @param name
+     * @param signature
+     * @param superName
+     * @param interfaces
+     */
     override fun visit(
         version: Int,
         access: Int,
@@ -24,7 +55,7 @@ class AddTimeCostVisitor(api: Int, classVisitor: ClassVisitor) :
         interfaces: Array<out String>?,
     ) {
         this.owner = name ?: ""
-        log("visit(): owner-$owner")
+        //log("visit(): owner-$owner")
         super.visit(version, access, name, signature, superName, interfaces)
     }
 
@@ -47,7 +78,7 @@ class AddTimeCostVisitor(api: Int, classVisitor: ClassVisitor) :
     }
 
     override fun visitEnd() {
-        log("visitEnd():")
+        //log("visitEnd():")
         if (cv != null) {
             val fieldVisitor = cv.visitField(
                 Opcodes.ACC_PUBLIC + Opcodes.ACC_STATIC, FIELD_NAME_ADD, "J", null, null)

lib_bytecode/src/main/java/org/ninetripods/lib_bytecode/asm/AddTimeCostVisitor.kt renamed to lib_bytecode/src/main/java/org/ninetripods/lib_bytecode/asm/demo/ATimeCostClassVisitor.kt

@@ -1,9 +1,8 @@
-package org.ninetripods.lib_bytecode
+package org.ninetripods.lib_bytecode.asm.demo
 
 class MethodTimeCostTest {
 
     fun addTimeCostMonitor() {
-        var aaa = 10
         Thread.sleep(1000)
     }
 

lib_bytecode/src/main/java/org/ninetripods/lib_bytecode/MethodTimeCostTest.kt renamed to lib_bytecode/src/main/java/org/ninetripods/lib_bytecode/asm/demo/MethodTimeCostTest.kt

@@ -1,20 +1,21 @@
-package org.ninetripods.lib_bytecode.asm
+package org.ninetripods.lib_bytecode.asm.demo
 
+import org.ninetripods.lib_bytecode.asm.AClassVisitor
+import org.ninetripods.lib_bytecode.util.FileUtil
 import org.objectweb.asm.ClassReader
 import org.objectweb.asm.ClassWriter
-import org.objectweb.asm.Opcodes
 import org.objectweb.asm.Opcodes.*
 
 /**
  * ASM使用示例
  */
-object ASMTest {
+object ProduceClz {
 
     @JvmStatic
     fun main(args: Array<String>) {
         println("ASM示例")
         val classReader = ClassReader("java.lang.Runnable")
-        val classVisitor = AClassVisitor(Opcodes.ASM9, ClassWriter(ClassWriter.COMPUTE_MAXS))
+        val classVisitor = AClassVisitor(ASM9, ClassWriter(ClassWriter.COMPUTE_MAXS))
         classReader.accept(classVisitor, ClassReader.EXPAND_FRAMES)
         produceClass()
     }
@@ -45,7 +46,6 @@ object ASMTest {
         cw.visitMethod(ACC_PUBLIC + ACC_ABSTRACT, "compareTo",
             "(Ljava/lang/Object;)I", null, null).visitEnd()
         cw.visitEnd()
-        val b = cw.toByteArray()
-        println(b.toString())
+        FileUtil.byte2File("AndroidStudy/build/demo/GenerAuto.java",cw.toByteArray())
     }
 }

lib_bytecode/src/main/java/org/ninetripods/lib_bytecode/asm/ASMTest.kt renamed to lib_bytecode/src/main/java/org/ninetripods/lib_bytecode/asm/demo/ProduceClz.kt

@@ -0,0 +1,35 @@
+package org.ninetripods.lib_bytecode.util
+
+import java.io.ByteArrayInputStream
+import java.io.File
+import java.io.FileOutputStream
+
+/**
+ * Created by mq on 2023/2/7
+ */
+object FileUtil {
+
+    fun byte2File(outputPath: String, sourceByte: ByteArray) {
+        try {
+            val file = File(outputPath)
+            if (file.exists()) {
+                file.delete()
+            } else {
+                file.createNewFile()
+            }
+
+            val inputStream = ByteArrayInputStream(sourceByte)
+            val outputStream = FileOutputStream(file)
+            val buffer = ByteArray(1024)
+            var len = 0
+            while (inputStream.read(buffer).apply { len = this } != -1) {
+                outputStream.write(buffer, 0, len)
+            }
+            outputStream.flush()
+            outputStream.close()
+            inputStream.close()
+        } catch (ex: Exception) {
+            ex.printStackTrace()
+        }
+    }
+}