commit 54749a04d985476bea28626adc9db3d0f85a384e Author: Ashhhleyyy Date: Tue Mar 12 15:44:26 2024 +0000 feat: initial commit of this mess diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..b63da45 --- /dev/null +++ b/.gitignore @@ -0,0 +1,42 @@ +.gradle +build/ +!gradle/wrapper/gradle-wrapper.jar +!**/src/main/**/build/ +!**/src/test/**/build/ + +### IntelliJ IDEA ### +.idea/modules.xml +.idea/jarRepositories.xml +.idea/compiler.xml +.idea/libraries/ +*.iws +*.iml +*.ipr +out/ +!**/src/main/**/out/ +!**/src/test/**/out/ + +### Eclipse ### +.apt_generated +.classpath +.factorypath +.project +.settings +.springBeans +.sts4-cache +bin/ +!**/src/main/**/bin/ +!**/src/test/**/bin/ + +### NetBeans ### +/nbproject/private/ +/nbbuild/ +/dist/ +/nbdist/ +/.nb-gradle/ + +### VS Code ### +.vscode/ + +### Mac OS ### +.DS_Store \ No newline at end of file diff --git a/.idea/.gitignore b/.idea/.gitignore new file mode 100644 index 0000000..13566b8 --- /dev/null +++ b/.idea/.gitignore @@ -0,0 +1,8 @@ +# Default ignored files +/shelf/ +/workspace.xml +# Editor-based HTTP Client requests +/httpRequests/ +# Datasource local storage ignored files +/dataSources/ +/dataSources.local.xml diff --git a/.idea/gradle.xml b/.idea/gradle.xml new file mode 100644 index 0000000..446c193 --- /dev/null +++ b/.idea/gradle.xml @@ -0,0 +1,18 @@ + + + + + + + \ No newline at end of file diff --git a/.idea/misc.xml b/.idea/misc.xml new file mode 100644 index 0000000..fe0b0da --- /dev/null +++ b/.idea/misc.xml @@ -0,0 +1,10 @@ + + + + + + + + + + \ No newline at end of file diff --git a/.idea/uiDesigner.xml b/.idea/uiDesigner.xml new file mode 100644 index 0000000..2b63946 --- /dev/null +++ b/.idea/uiDesigner.xml @@ -0,0 +1,124 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/build.gradle.kts b/build.gradle.kts new file mode 100644 index 0000000..970d5a8 --- /dev/null +++ b/build.gradle.kts @@ -0,0 +1,24 @@ +plugins { + id("java") + id("application") +} + +group = "dev.ashhhleyyy" +version = "1.0-SNAPSHOT" + +repositories { + mavenCentral() +} + +dependencies { + val asmVersion = "9.6" + implementation("org.ow2.asm:asm:$asmVersion") + implementation("org.ow2.asm:asm-tree:$asmVersion") + + testImplementation(platform("org.junit:junit-bom:5.9.1")) + testImplementation("org.junit.jupiter:junit-jupiter") +} + +tasks.test { + useJUnitPlatform() +} \ No newline at end of file diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000..249e583 Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..a715335 --- /dev/null +++ b/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,6 @@ +#Wed Feb 21 11:40:06 GMT 2024 +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-8.2-bin.zip +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/gradlew b/gradlew new file mode 100755 index 0000000..1b6c787 --- /dev/null +++ b/gradlew @@ -0,0 +1,234 @@ +#!/bin/sh + +# +# Copyright © 2015-2021 the original authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# + +############################################################################## +# +# Gradle start up script for POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit + +APP_NAME="Gradle" +APP_BASE_NAME=${0##*/} + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | MINGW* ) msys=true ;; #( + NONSTOP* ) nonstop=true ;; +esac + +CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar + + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD=$JAVA_HOME/jre/sh/java + else + JAVACMD=$JAVA_HOME/bin/java + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD=java + which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." +fi + +# Increase the maximum file descriptors if we can. +if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + +# Collect all arguments for the java command; +# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of +# shell script including quotes and variable substitutions, so put them in +# double quotes to make sure that they get re-expanded; and +# * put everything else in single quotes, so that it's not re-expanded. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -classpath "$CLASSPATH" \ + org.gradle.wrapper.GradleWrapperMain \ + "$@" + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/gradlew.bat b/gradlew.bat new file mode 100644 index 0000000..107acd3 --- /dev/null +++ b/gradlew.bat @@ -0,0 +1,89 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem + +@if "%DEBUG%" == "" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%" == "" set DIRNAME=. +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if "%ERRORLEVEL%" == "0" goto execute + +echo. +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:execute +@rem Setup the command line + +set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* + +:end +@rem End local scope for the variables with windows NT shell +if "%ERRORLEVEL%"=="0" goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 +exit /b 1 + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/settings.gradle.kts b/settings.gradle.kts new file mode 100644 index 0000000..dc8c68b --- /dev/null +++ b/settings.gradle.kts @@ -0,0 +1,2 @@ +rootProject.name = "bad-java" + diff --git a/src/main/java/dev/ashhhleyyy/bad/Main.java b/src/main/java/dev/ashhhleyyy/bad/Main.java new file mode 100644 index 0000000..8e467dd --- /dev/null +++ b/src/main/java/dev/ashhhleyyy/bad/Main.java @@ -0,0 +1,33 @@ +package dev.ashhhleyyy.bad; + +import dev.ashhhleyyy.bad.framework.ClassMaker; +import org.objectweb.asm.Opcodes; + +import java.lang.reflect.Method; + +public class Main { + public static void main(String[] args) throws Exception { + System.out.println("Hello world!"); + + ClassMaker maker = new ClassMaker("dev/ashhhleyyy/runtime/RuntimeClass_"); + + Class cls = maker.makeClass(builder -> { + builder.method( + Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, + "toBase10", + "(Ljava/lang/String;)I", + null, + new String[0], + bytecode -> { + bytecode.aload(0); + bytecode.bipush(2); + bytecode.invokestatic( "java/lang/Integer", "parseInt", "(Ljava/lang/String;I)I"); + bytecode.ireturn(); + }); + }); + + Method method = cls.getMethod("toBase10", String.class); + int i = (int) method.invoke(null, "10101010"); + System.out.println(i); + } +} \ No newline at end of file diff --git a/src/main/java/dev/ashhhleyyy/bad/framework/BytecodeBuilder.java b/src/main/java/dev/ashhhleyyy/bad/framework/BytecodeBuilder.java new file mode 100644 index 0000000..e9fc449 --- /dev/null +++ b/src/main/java/dev/ashhhleyyy/bad/framework/BytecodeBuilder.java @@ -0,0 +1,149 @@ +package dev.ashhhleyyy.bad.framework; + +import org.objectweb.asm.Label; +import org.objectweb.asm.Opcodes; +import org.objectweb.asm.tree.AbstractInsnNode; +import org.objectweb.asm.tree.ClassNode; +import org.objectweb.asm.tree.FieldInsnNode; +import org.objectweb.asm.tree.InsnNode; +import org.objectweb.asm.tree.IntInsnNode; +import org.objectweb.asm.tree.JumpInsnNode; +import org.objectweb.asm.tree.LabelNode; +import org.objectweb.asm.tree.LdcInsnNode; +import org.objectweb.asm.tree.MethodInsnNode; +import org.objectweb.asm.tree.MethodNode; +import org.objectweb.asm.tree.TypeInsnNode; +import org.objectweb.asm.tree.VarInsnNode; + +public final class BytecodeBuilder { + private final ClassNode classNode; + private final MethodNode methodNode; + + public BytecodeBuilder(ClassNode classNode, MethodNode methodNode) { + this.classNode = classNode; + this.methodNode = methodNode; + } + + public void add(AbstractInsnNode insn) { + this.methodNode.instructions.add(insn); + } + + // Helpers + + public void putThisField(String name, String desc) { + this.add(new FieldInsnNode(Opcodes.PUTFIELD, this.classNode.name, name, desc)); + } + + public void getThisField(String name, String desc) { + this.add(new FieldInsnNode(Opcodes.GETFIELD, this.classNode.name, name, desc)); + } + + // Raw instructions + + public void iadd() { + this.add(new InsnNode(Opcodes.IADD)); + } + + public void isub() { + this.add(new InsnNode(Opcodes.ISUB)); + } + + public void i2d() { + this.add(new InsnNode(Opcodes.I2D)); + } + + public void d2i() { + this.add(new InsnNode(Opcodes.D2I)); + } + + public void dup() { + this.add(new InsnNode(Opcodes.DUP)); + } + + public void ldc(Object o) { + this.add(new LdcInsnNode(o)); + } + + public void aastore() { + this.add(new InsnNode(Opcodes.AASTORE)); + } + + public void iload(int index) { + this.add(new VarInsnNode(Opcodes.ILOAD, index)); + } + + public void aload(int index) { + this.add(new VarInsnNode(Opcodes.ALOAD, index)); + } + + public void sipush(int operand) { + this.add(new IntInsnNode(Opcodes.SIPUSH, operand)); + } + + public void bipush(int operand) { + this.add(new IntInsnNode(Opcodes.BIPUSH, operand)); + } + + public void $new(String type) { + this.add(new TypeInsnNode(Opcodes.NEW, type)); + } + + public void newarray(String type) { + this.add(new TypeInsnNode(Opcodes.ANEWARRAY, type)); + } + + public void invokedynamic(String owner, String name, String desc) { + this.add(new MethodInsnNode(Opcodes.INVOKEDYNAMIC, owner, name, desc)); + } + + public void invokespecial(String owner, String name, String desc) { + this.add(new MethodInsnNode(Opcodes.INVOKESPECIAL, owner, name, desc)); + } + + public void invokestatic(String owner, String name, String desc) { + this.add(new MethodInsnNode(Opcodes.INVOKESTATIC, owner, name, desc)); + } + + public LabelNode label() { + return this.label(new LabelNode(new Label())); + } + + public LabelNode label(LabelNode label) { + this.add(label); + return label; + } + + public LabelNode if_icmpge(LabelNode label) { + this.add(new JumpInsnNode(Opcodes.IF_ICMPGE, label)); + return label; + } + + public LabelNode if_icmple(LabelNode label) { + this.add(new JumpInsnNode(Opcodes.IF_ICMPLE, label)); + return label; + } + + public LabelNode if_icmpge() { + return this.if_icmpge(new LabelNode(new Label())); + } + + public LabelNode if_icmple() { + return this.if_icmple(new LabelNode(new Label())); + } + + public void $return() { + this.add(new InsnNode(Opcodes.RETURN)); + } + + public void ireturn() { + this.add(new InsnNode(Opcodes.IRETURN)); + } + + public void areturn() { + this.add(new InsnNode(Opcodes.ARETURN)); + } + + public void athrow() { + this.add(new InsnNode(Opcodes.ATHROW)); + } +} diff --git a/src/main/java/dev/ashhhleyyy/bad/framework/ClassBuilder.java b/src/main/java/dev/ashhhleyyy/bad/framework/ClassBuilder.java new file mode 100644 index 0000000..16e28e7 --- /dev/null +++ b/src/main/java/dev/ashhhleyyy/bad/framework/ClassBuilder.java @@ -0,0 +1,37 @@ +package dev.ashhhleyyy.bad.framework; + +import java.util.ArrayList; +import java.util.function.Consumer; + +import org.objectweb.asm.Opcodes; +import org.objectweb.asm.tree.ClassNode; +import org.objectweb.asm.tree.FieldNode; +import org.objectweb.asm.tree.MethodNode; + +public class ClassBuilder { + private final ClassNode classNode; + + public ClassBuilder(ClassNode classNode) { + this.classNode = classNode; + } + + public void iface(String iface) { + if (this.classNode.interfaces == null) { + this.classNode.interfaces = new ArrayList<>(); + } + this.classNode.interfaces.add(iface); + } + + public FieldNode field(int access, String name, String descriptor, String signature, Object value) { + FieldNode field = new FieldNode(Opcodes.ASM9, access, name, descriptor, signature, value); + this.classNode.fields.add(field); + return field; + } + + public MethodNode method(int access, String name, String descriptor, String signature, String[] exceptions, Consumer builder) { + MethodNode method = new MethodNode(Opcodes.ASM9, access, name, descriptor, signature, exceptions); + builder.accept(new BytecodeBuilder(this.classNode, method)); + this.classNode.methods.add(method); + return method; + } +} diff --git a/src/main/java/dev/ashhhleyyy/bad/framework/ClassMaker.java b/src/main/java/dev/ashhhleyyy/bad/framework/ClassMaker.java new file mode 100644 index 0000000..0401c74 --- /dev/null +++ b/src/main/java/dev/ashhhleyyy/bad/framework/ClassMaker.java @@ -0,0 +1,73 @@ +package dev.ashhhleyyy.bad.framework; + +import org.objectweb.asm.ClassWriter; +import org.objectweb.asm.Opcodes; +import org.objectweb.asm.tree.ClassNode; + +import java.io.IOException; +import java.nio.file.Files; +import java.nio.file.Path; +import java.util.concurrent.atomic.AtomicInteger; +import java.util.function.Consumer; + +public class ClassMaker { + private final AtomicInteger nextClassId = new AtomicInteger(0); + private final String namePrefix; + + public ClassMaker(String namePrefix) { + this.namePrefix = namePrefix; + } + + private String generateClassName() { + int classId = this.nextClassId.getAndIncrement(); + return this.namePrefix + classId; + } + + public Class makeClass(Consumer builder) { + ClassNode node = new ClassNode(Opcodes.ASM9); + node.version = Opcodes.V1_8; + node.name = generateClassName(); + node.superName = "java/lang/Object"; + node.sourceFile = "this class was generated at runtime"; + node.access = Opcodes.ACC_PUBLIC; + builder.accept(new ClassBuilder(node)); + return JvmLoader.injectClass(node); + } + + private static final class JvmLoader extends ClassLoader { + private static final JvmLoader INSTANCE = new JvmLoader(JvmLoader.class.getClassLoader()); + private static final Path DUMP_PATH; + + static { + String prop = System.getProperty("ashhhleyyy.bad.framework.dumpClassFiles"); + if (prop != null) { + DUMP_PATH = Path.of(prop); + } else { + DUMP_PATH = null; + } + } + + private static Class injectClass(ClassNode node) { + ClassWriter writer = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES); + node.accept(writer); + byte[] code = writer.toByteArray(); + String className = node.name.replace('/', '.'); + if (DUMP_PATH != null) { + Path output = DUMP_PATH.resolve(className + ".class"); + try { + if (!Files.exists(DUMP_PATH)) { + Files.createDirectories(DUMP_PATH); + } + Files.write(output, code); + } catch (IOException e) { + throw new RuntimeException("failed to dump generated class file", e); + } + } + return INSTANCE.defineClass(className, code, 0, code.length); + } + + private JvmLoader(ClassLoader parent) { + super(parent); + } + } +}