Example usage for org.objectweb.asm MethodVisitor visitInvokeDynamicInsn

List of usage examples for org.objectweb.asm MethodVisitor visitInvokeDynamicInsn

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Introduction

In this page you can find the example usage for org.objectweb.asm MethodVisitor visitInvokeDynamicInsn.

Prototype

public void visitInvokeDynamicInsn(final String name, final String descriptor,
        final Handle bootstrapMethodHandle, final Object... bootstrapMethodArguments)

Source Link

Document

Visits an invokedynamic instruction.

Usage

From source file:org.jboss.byteman.agent.JigsawAccessEnablerGenerator.java

License:Open Source License

public static byte[] getJigsawAccessEnablerClassBytes() {
    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
    FieldVisitor fv;/*from  www.  ja v  a 2s  .  c  o  m*/
    MethodVisitor mv;

    // package org/jboss/byteman/jigsaw;
    // public class JigsawAccessEnabler implements AccessEnabler { ... }
    cw.visit(V9, ACC_PUBLIC + ACC_SUPER, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", null,
            "java/lang/Object", new String[] { "org/jboss/byteman/agent/AccessEnabler" });

    cw.visitSource("JigsawAccessEnabler.java", null);

    // this is here because we use String + String
    cw.visitInnerClass("java/lang/invoke/MethodHandles$Lookup", "java/lang/invoke/MethodHandles", "Lookup",
            ACC_PUBLIC + ACC_FINAL + ACC_STATIC);

    {
        // private Module THIS_MODULE = this.getClass().getModule();
        fv = cw.visitField(ACC_PRIVATE, "THIS_MODULE", "Ljava/lang/Module;", null, null);
        fv.visitEnd();
    }
    {
        // private Module UNPRIVILEGED_MODULE = AccessEnabler.class.getModule();
        fv = cw.visitField(ACC_PRIVATE, "UNPRIVILEGED_MODULE", "Ljava/lang/Module;", null, null);
        fv.visitEnd();
    }
    {
        // private Set<Module> THIS_MODULE_SET = Set.of(THIS_MODULE);
        fv = cw.visitField(ACC_PRIVATE, "THIS_MODULE_SET", "Ljava/util/Set;",
                "Ljava/util/Set<Ljava/lang/Module;>;", null);
        fv.visitEnd();
    }
    {
        // private Set<Module> EMPTY_READS_SET = Set.of();
        fv = cw.visitField(ACC_PRIVATE, "EMPTY_READS_SET", "Ljava/util/Set;",
                "Ljava/util/Set<Ljava/lang/Module;>;", null);
        fv.visitEnd();
    }
    {
        //  private Map<String,<Set<Module>> EMPTY_EXPORTS_MAP = Map.of();
        fv = cw.visitField(ACC_PRIVATE, "EMPTY_EXPORTS_MAP", "Ljava/util/Map;",
                "Ljava/util/Map<Ljava/lang/String;Ljava/util/Set<Ljava/lang/Module;>;>;", null);
        fv.visitEnd();
    }
    {
        //  private Map<String,<Set<Module>> EMPTY_OPENS_MAP = Map.of();
        fv = cw.visitField(ACC_PRIVATE, "EMPTY_OPENS_MAP", "Ljava/util/Map;",
                "Ljava/util/Map<Ljava/lang/String;Ljava/util/Set<Ljava/lang/Module;>;>;", null);
        fv.visitEnd();
    }
    {
        // private Set<Class<?>> EMPTY_USES_SET = Set.of()
        fv = cw.visitField(ACC_PRIVATE, "EMPTY_USES_SET", "Ljava/util/Set;",
                "Ljava/util/Set<Ljava/lang/Class<*>;>;", null);
        fv.visitEnd();
    }
    {
        // private Map<Class<?>,List<Class?>>> EMPTY_PROVIDES_MAP = Map.of();
        fv = cw.visitField(ACC_PRIVATE, "EMPTY_PROVIDES_MAP", "Ljava/util/Map;",
                "Ljava/util/Map<Ljava/lang/Class<*>;Ljava/util/List<Ljava/lang/Class<*>;>;>;", null);
        fv.visitEnd();
    }
    {
        //  private Instrumentation inst;
        fv = cw.visitField(ACC_PRIVATE, "inst", "Ljava/lang/instrument/Instrumentation;", null, null);
        fv.visitEnd();
    }
    {
        // private Lookup theLookup;
        fv = cw.visitField(ACC_PRIVATE, "theLookup", "Ljava/lang/invoke/MethodHandles$Lookup;", null, null);
        fv.visitEnd();
    }
    {
        // private DefaultAccessEnabler defaultAccessEnabler;
        fv = cw.visitField(ACC_PRIVATE, "defaultAccessEnabler",
                "Lorg/jboss/byteman/agent/DefaultAccessEnabler;", null, null);
        fv.visitEnd();
    }
    {
        // public JigsawAccessEnabler(Instrumentation inst)   {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "(Ljava/lang/instrument/Instrumentation;)V", null, null);
        mv.visitCode();
        Label l0 = new Label();
        Label l1 = new Label();
        Label l2 = new Label();
        mv.visitTryCatchBlock(l0, l1, l2, "java/lang/Exception");
        // super()
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
        // this.THIS_MODULE = this.getClass().getModule();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getModule", "()Ljava/lang/Module;", false);
        mv.visitFieldInsn(PUTFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "THIS_MODULE",
                "Ljava/lang/Module;");
        // this.UNPRIVILEGED_MODULE = AccessEnabler.class.getModule();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(Type.getType("Lorg/jboss/byteman/agent/AccessEnabler;"));
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getModule", "()Ljava/lang/Module;", false);
        mv.visitFieldInsn(PUTFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "UNPRIVILEGED_MODULE",
                "Ljava/lang/Module;");
        // this.THIS_MODULE_SET = Set.of(this.THIS_MODULE);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "THIS_MODULE",
                "Ljava/lang/Module;");
        mv.visitMethodInsn(INVOKESTATIC, "java/util/Set", "of", "(Ljava/lang/Object;)Ljava/util/Set;", true);
        mv.visitFieldInsn(PUTFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "THIS_MODULE_SET",
                "Ljava/util/Set;");
        // this.EMPTY_READS_SET = Set.of();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESTATIC, "java/util/Set", "of", "()Ljava/util/Set;", true);
        mv.visitFieldInsn(PUTFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "EMPTY_READS_SET",
                "Ljava/util/Set;");
        // this.EMPTY_EXPORTS_MAP = Map.of();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESTATIC, "java/util/Map", "of", "()Ljava/util/Map;", true);
        mv.visitFieldInsn(PUTFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "EMPTY_EXPORTS_MAP",
                "Ljava/util/Map;");
        // this.EMPTY_OPENS_MAP = Map.of();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESTATIC, "java/util/Map", "of", "()Ljava/util/Map;", true);
        mv.visitFieldInsn(PUTFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "EMPTY_OPENS_MAP",
                "Ljava/util/Map;");
        // this.EMPTY_USES_SET = Set.of()
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESTATIC, "java/util/Set", "of", "()Ljava/util/Set;", true);
        mv.visitFieldInsn(PUTFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "EMPTY_USES_SET",
                "Ljava/util/Set;");
        // this.EMPTY_PROVIDES_MAP = Map.of();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESTATIC, "java/util/Map", "of", "()Ljava/util/Map;", true);
        mv.visitFieldInsn(PUTFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "EMPTY_PROVIDES_MAP",
                "Ljava/util/Map;");
        // if this.THIS_MODULE.isnamed()
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "THIS_MODULE",
                "Ljava/lang/Module;");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Module", "isNamed", "()Z", false);
        Label l3 = new Label();
        mv.visitJumpInsn(IFNE, l3);
        // {
        //   throw NEW RuntimeException("JigsawAccessEnabler : can only enable Jigsaw access from a named module not " + THIS_MODULE);
        mv.visitTypeInsn(NEW, "java/lang/RuntimeException");
        mv.visitInsn(DUP);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "THIS_MODULE",
                "Ljava/lang/Module;");
        mv.visitInvokeDynamicInsn("makeConcatWithConstants", "(Ljava/lang/Module;)Ljava/lang/String;",
                new Handle(Opcodes.H_INVOKESTATIC, "java/lang/invoke/StringConcatFactory",
                        "makeConcatWithConstants",
                        "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/invoke/CallSite;"),
                new Object[] {
                        "JigsawAccessEnabler : can only enable Jigsaw access from a named module not \u0001" });
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/RuntimeException", "<init>", "(Ljava/lang/String;)V",
                false);
        mv.visitInsn(ATHROW);
        // }
        mv.visitLabel(l3);
        // if (inst == null)
        mv.visitVarInsn(ALOAD, 1);
        Label l4 = new Label();
        mv.visitJumpInsn(IFNONNULL, l4);
        // {
        //   throw New RuntimeException("JigsawAccessEnabler : can only be created if passed a real Instrumentation handle");
        mv.visitTypeInsn(NEW, "java/lang/RuntimeException");
        mv.visitInsn(DUP);
        mv.visitLdcInsn("JigsawAccessEnabler : can only be created if passed a real Instrumentation handle");
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/RuntimeException", "<init>", "(Ljava/lang/String;)V",
                false);
        mv.visitInsn(ATHROW);
        // }
        mv.visitLabel(l4);
        // this.inst = inst;
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitFieldInsn(PUTFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "inst",
                "Ljava/lang/instrument/Instrumentation;");
        // try {
        mv.visitLabel(l0);
        // this.theLookup = MethodHandles.lookup();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESTATIC, "java/lang/invoke/MethodHandles", "lookup",
                "()Ljava/lang/invoke/MethodHandles$Lookup;", false);
        mv.visitFieldInsn(PUTFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "theLookup",
                "Ljava/lang/invoke/MethodHandles$Lookup;");
        mv.visitLabel(l1);
        Label l5 = new Label();
        mv.visitJumpInsn(GOTO, l5);
        // } (catch Exception) {
        mv.visitLabel(l2);
        mv.visitVarInsn(ASTORE, 2);
        // throw new RuntimeException("JigsawAccessEnabler : cannot access Lookup.IMPL_LOOKUP", e);
        mv.visitTypeInsn(NEW, "java/lang/RuntimeException");
        mv.visitInsn(DUP);
        mv.visitLdcInsn("JigsawAccessEnabler : cannot obtain lookup from Byteman module");
        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/RuntimeException", "<init>",
                "(Ljava/lang/String;Ljava/lang/Throwable;)V", false);
        mv.visitInsn(ATHROW);
        // }
        mv.visitLabel(l5);
        // defaultAccessEnabler = new DefaultAccessEnabler();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitTypeInsn(NEW, "org/jboss/byteman/agent/DefaultAccessEnabler");
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/agent/DefaultAccessEnabler", "<init>", "()V",
                false);
        mv.visitFieldInsn(PUTFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "defaultAccessEnabler",
                "Lorg/jboss/byteman/agent/DefaultAccessEnabler;");
        if (DEBUG) {
            // debug("created JigsawAccessEnabler")
            mv.visitVarInsn(ALOAD, 0);
            mv.visitInsn(ICONST_1);
            mv.visitTypeInsn(ANEWARRAY, "java/lang/String");
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_0);
            mv.visitLdcInsn("created JigsawAccessEnabler");
            mv.visitInsn(AASTORE);
            mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "debug",
                    "([Ljava/lang/String;)V", false);
        }
        // return
        mv.visitInsn(RETURN);
        // }
        mv.visitMaxs(5, 3);
        mv.visitEnd();
    }
    {
        // public boolean requiresAccess(Class<?> klazz)
        mv = cw.visitMethod(ACC_PUBLIC, "requiresAccess", "(Ljava/lang/Class;)Z", "(Ljava/lang/Class<*>;)Z",
                null);
        mv.visitCode();
        Label l0 = new Label();
        Label l1 = new Label();
        Label l2 = new Label();
        mv.visitTryCatchBlock(l0, l1, l2, "java/lang/SecurityException");
        // debug("JigsawAccessEnabler.requiresAccess( klazz == " + klazz.getName() + ")");
        if (DEBUG) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitInsn(ICONST_3);
            mv.visitTypeInsn(ANEWARRAY, "java/lang/String");
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_0);
            mv.visitLdcInsn("JigsawAccessEnabler.requiresAccess( klazz == ");
            mv.visitInsn(AASTORE);
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_1);
            mv.visitVarInsn(ALOAD, 1);
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getName", "()Ljava/lang/String;", false);
            mv.visitInsn(AASTORE);
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_2);
            mv.visitLdcInsn(")");
            mv.visitInsn(AASTORE);
            mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "debug",
                    "([Ljava/lang/String;)V", false);
        }
        Label l3 = new Label();
        mv.visitLabel(l3);
        // while (Modifier.isPublic(klazz.getModifiers()))
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getModifiers", "()I", false);
        mv.visitMethodInsn(INVOKESTATIC, "java/lang/reflect/Modifier", "isPublic", "(I)Z", false);
        Label l4 = new Label();
        mv.visitJumpInsn(IFEQ, l4);
        // {
        //   Module module = klazz.getModule();
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getModule", "()Ljava/lang/Module;", false);
        mv.visitVarInsn(ASTORE, 2);
        //   if (module.isNamed())
        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Module", "isNamed", "()Z", false);
        Label l5 = new Label();
        mv.visitJumpInsn(IFEQ, l5);
        //   {
        //     debug(" module == " + module.getName());
        if (DEBUG) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitInsn(ICONST_2);
            mv.visitTypeInsn(ANEWARRAY, "java/lang/String");
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_0);
            mv.visitLdcInsn(" module == ");
            mv.visitInsn(AASTORE);
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_1);
            mv.visitVarInsn(ALOAD, 2);
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Module", "getName", "()Ljava/lang/String;", false);
            mv.visitInsn(AASTORE);
            mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "debug",
                    "([Ljava/lang/String;)V", false);
        }
        //     Package pkg = klazz.getPackage();
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getPackage", "()Ljava/lang/Package;", false);
        mv.visitVarInsn(ASTORE, 3);
        //     if (pkg == null)
        mv.visitVarInsn(ALOAD, 3);
        Label l6 = new Label();
        mv.visitJumpInsn(IFNONNULL, l6);
        //     {
        //        debug ("  (pkg == null) ==> false");
        if (DEBUG) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitInsn(ICONST_1);
            mv.visitTypeInsn(ANEWARRAY, "java/lang/String");
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_0);
            mv.visitLdcInsn("  (pkg == null) ==> false");
            mv.visitInsn(AASTORE);
            mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "debug",
                    "([Ljava/lang/String;)V", false);
        }
        mv.visitInsn(ICONST_0);
        mv.visitInsn(IRETURN);
        //     }
        mv.visitLabel(l6);
        //     if (!module.isExported(pkg.getName()))
        mv.visitVarInsn(ALOAD, 2);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Package", "getName", "()Ljava/lang/String;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Module", "isExported", "(Ljava/lang/String;)Z", false);
        mv.visitJumpInsn(IFNE, l5);
        //     {
        //       debug (" !module.isExported(pkg.getName()) ==> true");
        if (DEBUG) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitInsn(ICONST_1);
            mv.visitTypeInsn(ANEWARRAY, "java/lang/String");
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_0);
            mv.visitLdcInsn(" !module.isExported(pkg.getName()) ==> true");
            mv.visitInsn(AASTORE);
            mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "debug",
                    "([Ljava/lang/String;)V", false);
        }
        //       return true;
        mv.visitInsn(ICONST_1);
        mv.visitInsn(IRETURN);
        //     }
        //   }
        mv.visitLabel(l5);
        //   if (!klazz.isMemberClass())
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "isMemberClass", "()Z", false);
        mv.visitJumpInsn(IFNE, l0);
        //   {
        //     debug(" !klazz.isMemberClass() ==> false") ;
        if (DEBUG) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitInsn(ICONST_1);
            mv.visitTypeInsn(ANEWARRAY, "java/lang/String");
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_0);
            mv.visitLdcInsn(" !klazz.isMemberClass() ==> false");
            mv.visitInsn(AASTORE);
            mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "debug",
                    "([Ljava/lang/String;)V", false);
        }
        mv.visitInsn(ICONST_0);
        mv.visitInsn(IRETURN);
        //   }
        //   try {
        mv.visitLabel(l0);
        //     klazz = klazz.getDeclaringClass();
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getDeclaringClass", "()Ljava/lang/Class;", false);
        mv.visitVarInsn(ASTORE, 1);
        //     debug(" klazz == " + klazz.getName());
        if (DEBUG) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitInsn(ICONST_2);
            mv.visitTypeInsn(ANEWARRAY, "java/lang/String");
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_0);
            mv.visitLdcInsn(" klazz == ");
            mv.visitInsn(AASTORE);
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_1);
            mv.visitVarInsn(ALOAD, 1);
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getName", "()Ljava/lang/String;", false);
            mv.visitInsn(AASTORE);
            mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "debug",
                    "([Ljava/lang/String;)V", false);
        }
        mv.visitLabel(l1);
        Label l7 = new Label();
        mv.visitJumpInsn(GOTO, l7);
        //   } catch (SecurityException se) {
        mv.visitLabel(l2);
        mv.visitVarInsn(ASTORE, 3);
        //     debug ("SecurityException ==> true");
        if (DEBUG) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitInsn(ICONST_1);
            mv.visitTypeInsn(ANEWARRAY, "java/lang/String");
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_0);
            mv.visitLdcInsn("SecurityException ==> true");
            mv.visitInsn(AASTORE);
            mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "debug",
                    "([Ljava/lang/String;)V", false);
        }
        mv.visitInsn(ICONST_1);
        mv.visitInsn(IRETURN);
        //   }
        mv.visitLabel(l7);
        // }
        mv.visitJumpInsn(GOTO, l3);
        mv.visitLabel(l4);
        //     debug ("  ==> true");
        if (DEBUG) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitInsn(ICONST_1);
            mv.visitTypeInsn(ANEWARRAY, "java/lang/String");
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_0);
            mv.visitLdcInsn("  ==> true");
            mv.visitInsn(AASTORE);
            mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "debug",
                    "([Ljava/lang/String;)V", false);
        }
        mv.visitInsn(ICONST_1);
        mv.visitInsn(IRETURN);
        mv.visitMaxs(5, 4);
        mv.visitEnd();
    }
    {
        // public boolean requiresAccess(AccessibleObject) {
        mv = cw.visitMethod(ACC_PUBLIC, "requiresAccess", "(Ljava/lang/reflect/AccessibleObject;)Z", null,
                null);
        mv.visitCode();
        // Member member = (Member)accessible;
        mv.visitVarInsn(ALOAD, 1);
        mv.visitTypeInsn(CHECKCAST, "java/lang/reflect/Member");
        mv.visitVarInsn(ASTORE, 2);
        // debug("JigsawAccessEnabler.requiresAccess( accessible == " + member.getDeclaringClass().getName() + member.getName() + ")");
        if (DEBUG) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitInsn(ICONST_5);
            mv.visitTypeInsn(ANEWARRAY, "java/lang/String");
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_0);
            mv.visitLdcInsn("JigsawAccessEnabler.requiresAccess( accessible == ");
            mv.visitInsn(AASTORE);
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_1);
            mv.visitVarInsn(ALOAD, 2);
            mv.visitMethodInsn(INVOKEINTERFACE, "java/lang/reflect/Member", "getDeclaringClass",
                    "()Ljava/lang/Class;", true);
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getName", "()Ljava/lang/String;", false);
            mv.visitInsn(AASTORE);
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_2);
            mv.visitLdcInsn(".");
            mv.visitInsn(AASTORE);
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_3);
            mv.visitVarInsn(ALOAD, 2);
            mv.visitMethodInsn(INVOKEINTERFACE, "java/lang/reflect/Member", "getName", "()Ljava/lang/String;",
                    true);
            mv.visitInsn(AASTORE);
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_4);
            mv.visitLdcInsn(")");
            mv.visitInsn(AASTORE);
            mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "debug",
                    "([Ljava/lang/String;)V", false);
        }
        // if (!Modifier.isPublic(member.getModifiers())
        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEINTERFACE, "java/lang/reflect/Member", "getModifiers", "()I", true);
        mv.visitMethodInsn(INVOKESTATIC, "java/lang/reflect/Modifier", "isPublic", "(I)Z", false);
        Label l0 = new Label();
        mv.visitJumpInsn(IFNE, l0);
        // {
        //   debug ("!Modifier.isPublic(member.getModifiers()) ==> true");
        if (DEBUG) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitInsn(ICONST_1);
            mv.visitTypeInsn(ANEWARRAY, "java/lang/String");
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_0);
            mv.visitLdcInsn("!Modifier.isPublic(member.getModifiers()) ==> true");
            mv.visitInsn(AASTORE);
            mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "debug",
                    "([Ljava/lang/String;)V", false);
        }
        //   return true
        mv.visitInsn(ICONST_1);
        mv.visitInsn(IRETURN);
        // }
        mv.visitLabel(l0);
        // Class<?> clazz = member.getDeclaringClass();
        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEINTERFACE, "java/lang/reflect/Member", "getDeclaringClass",
                "()Ljava/lang/Class;", true);
        mv.visitVarInsn(ASTORE, 3);
        // if (!Modifier.isPublic(clazz.getModifiers()))
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getModifiers", "()I", false);
        mv.visitMethodInsn(INVOKESTATIC, "java/lang/reflect/Modifier", "isPublic", "(I)Z", false);
        Label l1 = new Label();
        mv.visitJumpInsn(IFNE, l1);
        // {
        //   debug("!Modifier.isPublic(clazz.getModifiers()) ==> true");
        if (DEBUG) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitInsn(ICONST_1);
            mv.visitTypeInsn(ANEWARRAY, "java/lang/String");
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_0);
            mv.visitLdcInsn("!Modifier.isPublic(clazz.getModifiers()) ==> true");
            mv.visitInsn(AASTORE);
            mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "debug",
                    "([Ljava/lang/String;)V", false);
        }
        mv.visitInsn(ICONST_1);
        mv.visitInsn(IRETURN);
        // }
        mv.visitLabel(l1);
        // while (clazz.isMemberClass())
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "isMemberClass", "()Z", false);
        Label l2 = new Label();
        mv.visitJumpInsn(IFEQ, l2);
        // do {
        //   clazz = clazz.getEnclosingClass();
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getEnclosingClass", "()Ljava/lang/Class;", false);
        mv.visitVarInsn(ASTORE, 3);
        //   debug("klazz == " + clazz.getName());
        if (DEBUG) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitInsn(ICONST_2);
            mv.visitTypeInsn(ANEWARRAY, "java/lang/String");
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_0);
            mv.visitLdcInsn("klazz == ");
            mv.visitInsn(AASTORE);
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_1);
            mv.visitVarInsn(ALOAD, 3);
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getName", "()Ljava/lang/String;", false);
            mv.visitInsn(AASTORE);
            mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "debug",
                    "([Ljava/lang/String;)V", false);
        }
        //   if (!Modifier.isPublic(clazz.getModifiers()))
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getModifiers", "()I", false);
        mv.visitMethodInsn(INVOKESTATIC, "java/lang/reflect/Modifier", "isPublic", "(I)Z", false);
        mv.visitJumpInsn(IFNE, l1);
        //   {
        //     debug("!Modifier.isPublic(clazz.getModifiers()) ==> true");
        if (DEBUG) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitInsn(ICONST_1);
            mv.visitTypeInsn(ANEWARRAY, "java/lang/String");
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_0);
            mv.visitLdcInsn("!Modifier.isPublic(clazz.getModifiers()) ==> true");
            mv.visitInsn(AASTORE);
            mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "debug",
                    "([Ljava/lang/String;)V", false);
        }
        //     return true
        mv.visitInsn(ICONST_1);
        mv.visitInsn(IRETURN);
        //   }
        // } done
        mv.visitLabel(l2);
        // Module module = clazz.getModule();
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getModule", "()Ljava/lang/Module;", false);
        mv.visitVarInsn(ASTORE, 4);
        // if (!module.isNamed())
        mv.visitVarInsn(ALOAD, 4);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Module", "isNamed", "()Z", false);
        Label l3 = new Label();
        mv.visitJumpInsn(IFNE, l3);
        // {
        //   debug ("!module.isNamed() ==> false");
        if (DEBUG) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitInsn(ICONST_1);
            mv.visitTypeInsn(ANEWARRAY, "java/lang/String");
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_0);
            mv.visitLdcInsn("!module.isNamed() ==> false");
            mv.visitInsn(AASTORE);
            mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "debug",
                    "([Ljava/lang/String;)V", false);
        }
        //   return false
        mv.visitInsn(ICONST_0);
        mv.visitInsn(IRETURN);
        // }
        mv.visitLabel(l3);
        if (DEBUG) {
            // debug("module == " + module.getName());
            mv.visitVarInsn(ALOAD, 0);
            mv.visitInsn(ICONST_2);
            mv.visitTypeInsn(ANEWARRAY, "java/lang/String");
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_0);
            mv.visitLdcInsn("module == ");
            mv.visitInsn(AASTORE);
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_1);
            mv.visitVarInsn(ALOAD, 4);
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Module", "getName", "()Ljava/lang/String;", false);
            mv.visitInsn(AASTORE);
            mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "debug",
                    "([Ljava/lang/String;)V", false);
        }
        // String pkg = clazz.getPackageName();
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getPackageName", "()Ljava/lang/String;", false);
        mv.visitVarInsn(ASTORE, 5);
        if (DEBUG) {
            // debug("pkg == " + pkg);
            mv.visitVarInsn(ALOAD, 0);
            mv.visitInsn(ICONST_2);
            mv.visitTypeInsn(ANEWARRAY, "java/lang/String");
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_0);
            mv.visitLdcInsn("pkg == ");
            mv.visitInsn(AASTORE);
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_1);
            mv.visitVarInsn(ALOAD, 5);
            mv.visitInsn(AASTORE);
            mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "debug",
                    "([Ljava/lang/String;)V", false);
        }
        // if (module.isExported(pkg, UNPRIVILEGED_MODULE))
        mv.visitVarInsn(ALOAD, 4);
        mv.visitVarInsn(ALOAD, 5);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "UNPRIVILEGED_MODULE",
                "Ljava/lang/Module;");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Module", "isExported",
                "(Ljava/lang/String;Ljava/lang/Module;)Z", false);
        Label l4 = new Label();
        mv.visitJumpInsn(IFEQ, l4);
        // {
        //   debug ("module.isExported(pkg, UNPRIVILEGED_MODULE) ==> false");
        if (DEBUG) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitInsn(ICONST_1);
            mv.visitTypeInsn(ANEWARRAY, "java/lang/String");
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_0);
            mv.visitLdcInsn("module.isExported(pkg, UNPRIVILEGED_MODULE) ==> false");
            mv.visitInsn(AASTORE);
            mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "debug",
                    "([Ljava/lang/String;)V", false);
        }
        //   return false
        mv.visitInsn(ICONST_0);
        mv.visitInsn(IRETURN);
        // }
        mv.visitLabel(l4);
        // debug(" ==> true");
        if (DEBUG) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitInsn(ICONST_1);
            mv.visitTypeInsn(ANEWARRAY, "java/lang/String");
            mv.visitInsn(DUP);
            mv.visitInsn(ICONST_0);
            mv.visitLdcInsn(" ==> true");
            mv.visitInsn(AASTORE);
            mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "debug",
                    "([Ljava/lang/String;)V", false);
        }
        // return true
        mv.visitInsn(ICONST_1);
        mv.visitInsn(IRETURN);
        // }
        mv.visitMaxs(5, 6);
        mv.visitEnd();
    }
    {
        // public void ensureAccess(AccessibleObject) {
        mv = cw.visitMethod(ACC_PUBLIC, "ensureAccess", "(Ljava/lang/reflect/AccessibleObject;)V", null, null);
        mv.visitCode();
        //  ensureModuleAccess(accessible);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "ensureModuleAccess",
                "(Ljava/lang/reflect/AccessibleObject;)V", false);
        // accessible.setAccessible(true);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitInsn(ICONST_1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/AccessibleObject", "setAccessible", "(Z)V", false);
        mv.visitInsn(RETURN);
        // }
        mv.visitMaxs(2, 2);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "createMethodInvoker",
                "(Ljava/lang/reflect/Method;)Lorg/jboss/byteman/agent/AccessibleMethodInvoker;", null, null);
        mv.visitCode();
        Label l0 = new Label();
        Label l1 = new Label();
        Label l2 = new Label();
        mv.visitTryCatchBlock(l0, l1, l2, "java/lang/IllegalArgumentException");
        Label l3 = new Label();
        mv.visitTryCatchBlock(l0, l1, l3, "java/lang/IllegalAccessException");
        // ensureModuleAccess(method);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "ensureModuleAccess",
                "(Ljava/lang/reflect/AccessibleObject;)V", false);
        //  Lookup privateLookup = null;
        mv.visitInsn(ACONST_NULL);
        mv.visitVarInsn(ASTORE, 2);
        //   try {
        mv.visitLabel(l0);
        // privateLookup = MethodHandles.privateLookupIn(method.getDeclaringClass(), theLookup);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Method", "getDeclaringClass",
                "()Ljava/lang/Class;", false);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "theLookup",
                "Ljava/lang/invoke/MethodHandles$Lookup;");
        mv.visitMethodInsn(INVOKESTATIC, "java/lang/invoke/MethodHandles", "privateLookupIn",
                "(Ljava/lang/Class;Ljava/lang/invoke/MethodHandles$Lookup;)Ljava/lang/invoke/MethodHandles$Lookup;",
                false);
        mv.visitVarInsn(ASTORE, 2);
        mv.visitLabel(l1);
        Label l4 = new Label();
        mv.visitJumpInsn(GOTO, l4);
        // } catch (IllegalArgumentException e) {
        mv.visitLabel(l2);
        mv.visitVarInsn(ASTORE, 3);
        // method.setAccessible(true);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitInsn(ICONST_1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Method", "setAccessible", "(Z)V", false);
        // return defaultAccessEnabler.createMethodInvoker(method, true);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "defaultAccessEnabler",
                "Lorg/jboss/byteman/agent/DefaultAccessEnabler;");
        mv.visitVarInsn(ALOAD, 1);
        mv.visitInsn(ICONST_1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/jboss/byteman/agent/DefaultAccessEnabler", "createMethodInvoker",
                "(Ljava/lang/reflect/Method;Z)Lorg/jboss/byteman/agent/AccessibleMethodInvoker;", false);
        mv.visitInsn(ARETURN);
        // } catch (IllegalAccessException e) {
        mv.visitLabel(l3);
        mv.visitVarInsn(ASTORE, 3);
        // }
        mv.visitLabel(l4);
        // return new JigsawAccessibleMethodInvoker(privateLookup, method);
        mv.visitTypeInsn(NEW, "org/jboss/byteman/jigsaw/JigsawAccessibleMethodInvoker");
        mv.visitInsn(DUP);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessibleMethodInvoker", "<init>",
                "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/reflect/Method;)V", false);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(4, 4);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "createConstructorInvoker",
                "(Ljava/lang/reflect/Constructor;)Lorg/jboss/byteman/agent/AccessibleConstructorInvoker;", null,
                null);
        mv.visitCode();
        Label l0 = new Label();
        Label l1 = new Label();
        Label l2 = new Label();
        mv.visitTryCatchBlock(l0, l1, l2, "java/lang/IllegalArgumentException");
        Label l3 = new Label();
        mv.visitTryCatchBlock(l0, l1, l3, "java/lang/IllegalAccessException");
        // ensureModuleAccess(constructor);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "ensureModuleAccess",
                "(Ljava/lang/reflect/AccessibleObject;)V", false);
        //  Lookup privateLookup = null;
        mv.visitInsn(ACONST_NULL);
        mv.visitVarInsn(ASTORE, 2);
        // try {
        mv.visitLabel(l0);
        // privateLookup = MethodHandles.privateLookupIn(constructor.getDeclaringClass(), theLookup)
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Constructor", "getDeclaringClass",
                "()Ljava/lang/Class;", false);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "theLookup",
                "Ljava/lang/invoke/MethodHandles$Lookup;");
        mv.visitMethodInsn(INVOKESTATIC, "java/lang/invoke/MethodHandles", "privateLookupIn",
                "(Ljava/lang/Class;Ljava/lang/invoke/MethodHandles$Lookup;)Ljava/lang/invoke/MethodHandles$Lookup;",
                false);
        mv.visitVarInsn(ASTORE, 2);
        mv.visitLabel(l1);
        Label l4 = new Label();
        mv.visitJumpInsn(GOTO, l4);
        // } catch (IllegalArgumentException e) {
        mv.visitLabel(l2);
        mv.visitVarInsn(ASTORE, 3);
        // constructor.setAccessible(true);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitInsn(ICONST_1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Constructor", "setAccessible", "(Z)V", false);
        // return defaultAccessEnabler.createConstructorInvoker(constructor);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "defaultAccessEnabler",
                "Lorg/jboss/byteman/agent/DefaultAccessEnabler;");
        mv.visitVarInsn(ALOAD, 1);
        mv.visitInsn(ICONST_1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/jboss/byteman/agent/DefaultAccessEnabler",
                "createConstructorInvoker",
                "(Ljava/lang/reflect/Constructor;Z)Lorg/jboss/byteman/agent/AccessibleConstructorInvoker;",
                false);
        mv.visitInsn(ARETURN);
        // } catch (IllegalAccessException e) {
        mv.visitLabel(l3);
        mv.visitVarInsn(ASTORE, 3);
        // }
        mv.visitLabel(l4);
        // return new JigsawAccessibleConstructorInvoker(privateLookup, constructor);
        mv.visitTypeInsn(NEW, "org/jboss/byteman/jigsaw/JigsawAccessibleConstructorInvoker");
        mv.visitInsn(DUP);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessibleConstructorInvoker",
                "<init>", "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/reflect/Constructor;)V", false);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(4, 4);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "createFieldGetter",
                "(Ljava/lang/reflect/Field;)Lorg/jboss/byteman/agent/AccessibleFieldGetter;", null, null);
        mv.visitCode();
        Label l0 = new Label();
        Label l1 = new Label();
        Label l2 = new Label();
        mv.visitTryCatchBlock(l0, l1, l2, "java/lang/IllegalArgumentException");
        Label l3 = new Label();
        mv.visitTryCatchBlock(l0, l1, l3, "java/lang/IllegalAccessException");
        // ensureModuleAccess(field);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "ensureModuleAccess",
                "(Ljava/lang/reflect/AccessibleObject;)V", false);
        // Lookup privateLookup = null;
        mv.visitInsn(ACONST_NULL);
        mv.visitVarInsn(ASTORE, 2);
        // try {
        mv.visitLabel(l0);
        // privateLookup = MethodHandles.privateLookupIn(field.getDeclaringClass(), theLookup)
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Field", "getDeclaringClass", "()Ljava/lang/Class;",
                false);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "theLookup",
                "Ljava/lang/invoke/MethodHandles$Lookup;");
        mv.visitMethodInsn(INVOKESTATIC, "java/lang/invoke/MethodHandles", "privateLookupIn",
                "(Ljava/lang/Class;Ljava/lang/invoke/MethodHandles$Lookup;)Ljava/lang/invoke/MethodHandles$Lookup;",
                false);
        mv.visitVarInsn(ASTORE, 2);
        mv.visitLabel(l1);
        Label l4 = new Label();
        mv.visitJumpInsn(GOTO, l4);
        // } catch (IllegalArgumentException e) {
        mv.visitLabel(l2);
        mv.visitVarInsn(ASTORE, 3);
        // field.setAccessible(true);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitInsn(ICONST_1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Field", "setAccessible", "(Z)V", false);
        // return defaultAccessEnabler.createFieldGetter(method);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "defaultAccessEnabler",
                "Lorg/jboss/byteman/agent/DefaultAccessEnabler;");
        mv.visitVarInsn(ALOAD, 1);
        mv.visitInsn(ICONST_1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/jboss/byteman/agent/DefaultAccessEnabler", "createFieldGetter",
                "(Ljava/lang/reflect/Field;Z)Lorg/jboss/byteman/agent/AccessibleFieldGetter;", false);
        mv.visitInsn(ARETURN);
        // } catch (IllegalAccessException e) {
        mv.visitLabel(l3);
        mv.visitVarInsn(ASTORE, 3);
        // }
        mv.visitLabel(l4);
        // return new JigsawAccessibleFieldGetter(privateLookup, field);
        mv.visitTypeInsn(NEW, "org/jboss/byteman/jigsaw/JigsawAccessibleFieldGetter");
        mv.visitInsn(DUP);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessibleFieldGetter", "<init>",
                "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/reflect/Field;)V", false);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(4, 4);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "createFieldSetter",
                "(Ljava/lang/reflect/Field;)Lorg/jboss/byteman/agent/AccessibleFieldSetter;", null, null);
        mv.visitCode();
        Label l0 = new Label();
        Label l1 = new Label();
        Label l2 = new Label();
        mv.visitTryCatchBlock(l0, l1, l2, "java/lang/IllegalArgumentException");
        Label l3 = new Label();
        mv.visitTryCatchBlock(l0, l1, l3, "java/lang/IllegalAccessException");
        // ensureModuleAccess(field);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "ensureModuleAccess",
                "(Ljava/lang/reflect/AccessibleObject;)V", false);
        // Lookup privateLookup = null;
        mv.visitInsn(ACONST_NULL);
        mv.visitVarInsn(ASTORE, 2);
        // try {
        mv.visitLabel(l0);
        // privateLookup = MethodHandles.privateLookupIn(field.getDeclaringClass(), theLookup)
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Field", "getDeclaringClass", "()Ljava/lang/Class;",
                false);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "theLookup",
                "Ljava/lang/invoke/MethodHandles$Lookup;");
        mv.visitMethodInsn(INVOKESTATIC, "java/lang/invoke/MethodHandles", "privateLookupIn",
                "(Ljava/lang/Class;Ljava/lang/invoke/MethodHandles$Lookup;)Ljava/lang/invoke/MethodHandles$Lookup;",
                false);
        mv.visitVarInsn(ASTORE, 2);
        mv.visitLabel(l1);
        Label l4 = new Label();
        mv.visitJumpInsn(GOTO, l4);
        // } catch (IllegalArgumentException e) {
        mv.visitLabel(l2);
        mv.visitVarInsn(ASTORE, 3);
        // field.setAccessible(true);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitInsn(ICONST_1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Field", "setAccessible", "(Z)V", false);
        // return defaultAccessEnabler.createFieldSetter(method);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "defaultAccessEnabler",
                "Lorg/jboss/byteman/agent/DefaultAccessEnabler;");
        mv.visitVarInsn(ALOAD, 1);
        mv.visitInsn(ICONST_1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/jboss/byteman/agent/DefaultAccessEnabler", "createFieldSetter",
                "(Ljava/lang/reflect/Field;Z)Lorg/jboss/byteman/agent/AccessibleFieldSetter;", false);
        mv.visitInsn(ARETURN);
        // } catch (IllegalAccessException e) {
        mv.visitLabel(l3);
        mv.visitVarInsn(ASTORE, 3);
        // }
        mv.visitLabel(l4);
        // return new JigsawAccessibleFieldSetter(privateLookup, field);
        mv.visitTypeInsn(NEW, "org/jboss/byteman/jigsaw/JigsawAccessibleFieldSetter");
        mv.visitInsn(DUP);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESPECIAL, "org/jboss/byteman/jigsaw/JigsawAccessibleFieldSetter", "<init>",
                "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/reflect/Field;)V", false);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(4, 4);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PRIVATE, "ensureModuleAccess", "(Ljava/lang/reflect/AccessibleObject;)V", null,
                null);
        mv.visitCode();
        // Member member = (Member)accessible;
        mv.visitVarInsn(ALOAD, 1);
        mv.visitTypeInsn(CHECKCAST, "java/lang/reflect/Member");
        mv.visitVarInsn(ASTORE, 2);
        // Class<?> clazz = member.getDeclaringClass();
        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEINTERFACE, "java/lang/reflect/Member", "getDeclaringClass",
                "()Ljava/lang/Class;", true);
        mv.visitVarInsn(ASTORE, 3);
        // Module module = clazz.getModule();
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getModule", "()Ljava/lang/Module;", false);
        mv.visitVarInsn(ASTORE, 4);
        // if (!module.isNamed()) {
        mv.visitVarInsn(ALOAD, 4);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Module", "isNamed", "()Z", false);
        Label l0 = new Label();
        mv.visitJumpInsn(IFNE, l0);
        // if (!THIS_MODULE.canRead(module)) {
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "THIS_MODULE",
                "Ljava/lang/Module;");
        mv.visitVarInsn(ALOAD, 4);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Module", "canRead", "(Ljava/lang/Module;)Z", false);
        Label ltmp0 = new Label();
        mv.visitJumpInsn(IFNE, ltmp0);
        // inst.redefineModule(THIS_MODULE, Set.of(module), EMPTY_EXPORTS_MAP, EMPTY_OPENS_MAP, EMPTY_USES_SET, EMPTY_PROVIDES_MAP);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "inst",
                "Ljava/lang/instrument/Instrumentation;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "THIS_MODULE",
                "Ljava/lang/Module;");
        mv.visitVarInsn(ALOAD, 4);
        mv.visitMethodInsn(INVOKESTATIC, "java/util/Set", "of", "(Ljava/lang/Object;)Ljava/util/Set;", true);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "EMPTY_EXPORTS_MAP",
                "Ljava/util/Map;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "EMPTY_OPENS_MAP",
                "Ljava/util/Map;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "EMPTY_USES_SET",
                "Ljava/util/Set;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "EMPTY_PROVIDES_MAP",
                "Ljava/util/Map;");
        mv.visitMethodInsn(INVOKEINTERFACE, "java/lang/instrument/Instrumentation", "redefineModule",
                "(Ljava/lang/Module;Ljava/util/Set;Ljava/util/Map;Ljava/util/Map;Ljava/util/Set;Ljava/util/Map;)V",
                true);
        // }
        mv.visitLabel(ltmp0);
        // return;
        mv.visitInsn(RETURN);
        // }
        mv.visitLabel(l0);
        // String pkg = clazz.getPackageName();
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getPackageName", "()Ljava/lang/String;", false);
        mv.visitVarInsn(ASTORE, 5);
        // if (!module.isOpen(pkg, THIS_MODULE)) {
        mv.visitVarInsn(ALOAD, 4);
        mv.visitVarInsn(ALOAD, 5);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "THIS_MODULE",
                "Ljava/lang/Module;");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Module", "isOpen",
                "(Ljava/lang/String;Ljava/lang/Module;)Z", false);
        Label l1 = new Label();
        mv.visitJumpInsn(IFNE, l1);
        // Map<String, Set<Module>> extraOpens = Map.of(pkg, THIS_MODULE_SET);
        mv.visitVarInsn(ALOAD, 5);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "THIS_MODULE_SET",
                "Ljava/util/Set;");
        mv.visitMethodInsn(INVOKESTATIC, "java/util/Map", "of",
                "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/util/Map;", true);
        mv.visitVarInsn(ASTORE, 6);
        // inst.redefineModule(module, EMPTY_READS_SET, EMPTY_EXPORTS_MAP, extraOpens, EMPTY_USES_SET, EMPTY_PROVIDES_MAP);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "inst",
                "Ljava/lang/instrument/Instrumentation;");
        mv.visitVarInsn(ALOAD, 4);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "EMPTY_READS_SET",
                "Ljava/util/Set;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "EMPTY_EXPORTS_MAP",
                "Ljava/util/Map;");
        mv.visitVarInsn(ALOAD, 6);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "EMPTY_USES_SET",
                "Ljava/util/Set;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "EMPTY_PROVIDES_MAP",
                "Ljava/util/Map;");
        mv.visitMethodInsn(INVOKEINTERFACE, "java/lang/instrument/Instrumentation", "redefineModule",
                "(Ljava/lang/Module;Ljava/util/Set;Ljava/util/Map;Ljava/util/Map;Ljava/util/Set;Ljava/util/Map;)V",
                true);
        // inst.redefineModule(THIS_MODULE, Set.of(module), EMPTY_EXPORTS_MAP, extraOpens, EMPTY_USES_SET, EMPTY_PROVIDES_MAP);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "inst",
                "Ljava/lang/instrument/Instrumentation;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "THIS_MODULE",
                "Ljava/lang/Module;");
        mv.visitVarInsn(ALOAD, 4);
        mv.visitMethodInsn(INVOKESTATIC, "java/util/Set", "of", "(Ljava/lang/Object;)Ljava/util/Set;", true);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "EMPTY_EXPORTS_MAP",
                "Ljava/util/Map;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "EMPTY_OPENS_MAP",
                "Ljava/util/Map;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "EMPTY_USES_SET",
                "Ljava/util/Set;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, "org/jboss/byteman/jigsaw/JigsawAccessEnabler", "EMPTY_PROVIDES_MAP",
                "Ljava/util/Map;");
        mv.visitMethodInsn(INVOKEINTERFACE, "java/lang/instrument/Instrumentation", "redefineModule",
                "(Ljava/lang/Module;Ljava/util/Set;Ljava/util/Map;Ljava/util/Map;Ljava/util/Set;Ljava/util/Map;)V",
                true);
        mv.visitLabel(l1);
        // }
        mv.visitInsn(RETURN);
        mv.visitMaxs(7, 7);
        mv.visitEnd();
    }
    {
        if (DEBUG) {
            mv = cw.visitMethod(ACC_PRIVATE + ACC_VARARGS, "debug", "([Ljava/lang/String;)V", null, null);
            mv.visitCode();
            // StringBuilder builder = new StringBuilder();
            mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
            mv.visitInsn(DUP);
            mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "()V", false);
            mv.visitVarInsn(ASTORE, 2);
            // for (String s : args)
            mv.visitVarInsn(ALOAD, 1);
            mv.visitVarInsn(ASTORE, 3);
            mv.visitVarInsn(ALOAD, 3);
            mv.visitInsn(ARRAYLENGTH);
            mv.visitVarInsn(ISTORE, 4);
            mv.visitInsn(ICONST_0);
            mv.visitVarInsn(ISTORE, 5);
            Label l0 = new Label();
            mv.visitLabel(l0);
            // {
            //
            mv.visitVarInsn(ILOAD, 5);
            mv.visitVarInsn(ILOAD, 4);
            Label l1 = new Label();
            mv.visitJumpInsn(IF_ICMPGE, l1);
            mv.visitVarInsn(ALOAD, 3);
            mv.visitVarInsn(ILOAD, 5);
            mv.visitInsn(AALOAD);
            //    builder.append(s);
            mv.visitVarInsn(ASTORE, 6);
            mv.visitVarInsn(ALOAD, 2);
            mv.visitVarInsn(ALOAD, 6);
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                    "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
            mv.visitInsn(POP);
            mv.visitIincInsn(5, 1);
            mv.visitJumpInsn(GOTO, l0);
            // }
            mv.visitLabel(l1);
            // System.out.println(builder.toString());
            mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
            mv.visitVarInsn(ALOAD, 2);
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;",
                    false);
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false);
            mv.visitInsn(RETURN);
            mv.visitMaxs(2, 7);
            mv.visitEnd();
        }
    }
    cw.visitEnd();

    return cw.toByteArray();
}

From source file:org.spongepowered.test.ast.LambdaTest.java

License:Open Source License

@Test
public void testLambda() {
    TestMethodBuilder builder = new TestMethodBuilder("test_mth", "()V");
    MethodVisitor mv = builder.getGenerator();
    Label start = new Label();
    mv.visitLabel(start);//from w w w.  jav  a  2 s.  c o  m
    if (TestHelper.IS_ECLIPSE) {
        mv.visitInvokeDynamicInsn("run", "()Ljava/lang/Runnable;", new Handle(H_INVOKESTATIC,
                "java/lang/invoke/LambdaMetafactory", "metafactory",
                "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
                new Object[] { Type.getType("()V"),
                        new Handle(H_INVOKESTATIC, "org/spongepowered/test/ast/LambdaTest", "lambda$0", "()V"),
                        Type.getType("()V") });
    } else {
        // javac adds an extra decoration to the lambda method name with the
        // name of the calling method
        mv.visitInvokeDynamicInsn("run", "()Ljava/lang/Runnable;", new Handle(H_INVOKESTATIC,
                "java/lang/invoke/LambdaMetafactory", "metafactory",
                "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
                new Object[] { Type.getType("()V"), new Handle(H_INVOKESTATIC,
                        "org/spongepowered/test/ast/LambdaTest", "lambda$test_lambda$0", "()V"),
                        Type.getType("()V") });
    }
    mv.visitVarInsn(ASTORE, 1);
    Label l1 = new Label();
    mv.visitLabel(l1);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKEINTERFACE, "java/lang/Runnable", "run", "()V", true);
    mv.visitInsn(RETURN);
    Label end = new Label();
    mv.visitLabel(end);
    mv.visitLocalVariable("this", "Lorg/spongepowered/test/ast/LambdaTest;", null, start, end, 0);
    mv.visitLocalVariable("r", "Ljava/lang/Runnable;", null, l1, end, 1);

    String insn = TestHelper.getAsString(builder.finish(), "test_mth");
    String good = "Runnable r = () -> System.out.println(\"Hello World\");\n" + "r.run();";
    Assert.assertEquals(good, insn);
}

From source file:org.spongepowered.test.ast.LambdaTest.java

License:Open Source License

@Test
public void testConsumer() {
    TestMethodBuilder builder = new TestMethodBuilder("test_mth", "()V");
    MethodVisitor mv = builder.getGenerator();
    Label start = new Label();
    mv.visitLabel(start);// ww w.  j  av a  2s .co  m
    if (TestHelper.IS_ECLIPSE) {
        mv.visitInvokeDynamicInsn("accept", "()Ljava/util/function/Consumer;", new Handle(H_INVOKESTATIC,
                "java/lang/invoke/LambdaMetafactory", "metafactory",
                "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
                new Object[] {
                        Type.getType("(Ljava/lang/Object;)V"), new Handle(H_INVOKESTATIC,
                                "org/spongepowered/test/ast/LambdaTest", "lambda$1", "(Ljava/lang/Object;)V"),
                        Type.getType("(Ljava/lang/Object;)V") });
    } else {
        // javac adds an extra decoration to the lambda method name with the
        // name of the calling method
        mv.visitInvokeDynamicInsn("accept", "()Ljava/util/function/Consumer;", new Handle(H_INVOKESTATIC,
                "java/lang/invoke/LambdaMetafactory", "metafactory",
                "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
                new Object[] { Type.getType("(Ljava/lang/Object;)V"),
                        new Handle(H_INVOKESTATIC, "org/spongepowered/test/ast/LambdaTest",
                                "lambda$test_consumer$1", "(Ljava/lang/Object;)V"),
                        Type.getType("(Ljava/lang/Object;)V") });
    }
    mv.visitVarInsn(ASTORE, 1);
    Label l1 = new Label();
    mv.visitLabel(l1);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitInsn(ACONST_NULL);
    mv.visitMethodInsn(INVOKEINTERFACE, "java/util/function/Consumer", "accept", "(Ljava/lang/Object;)V", true);
    mv.visitInsn(RETURN);
    Label end = new Label();
    mv.visitLabel(end);
    mv.visitLocalVariable("this", "Lorg/spongepowered/test/ast/LambdaTest;", null, start, end, 0);
    mv.visitLocalVariable("r", "Ljava/util/function/Consumer;",
            "Ljava/util/function/Consumer<Ljava/lang/Object;>;", l1, end, 1);

    String insn = TestHelper.getAsString(builder.finish(), "test_mth");
    String good = "java.util.function.Consumer<Object> r = (obj) -> System.out.println(\"Hello World\");\n"
            + "r.accept(null);";
    Assert.assertEquals(good, insn);
}

From source file:org.spongepowered.test.ast.LambdaTest.java

License:Open Source License

@Test
public void testProducer() {
    TestMethodBuilder builder = new TestMethodBuilder("test_mth", "()V");
    MethodVisitor mv = builder.getGenerator();
    Label start = new Label();
    mv.visitLabel(start);//  w  w  w  . j a  v a2s .c  o  m
    if (TestHelper.IS_ECLIPSE) {
        mv.visitInvokeDynamicInsn("call", "()Ljava/util/concurrent/Callable;", new Handle(H_INVOKESTATIC,
                "java/lang/invoke/LambdaMetafactory", "metafactory",
                "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
                new Object[] {
                        Type.getType("()Ljava/lang/Object;"), new Handle(H_INVOKESTATIC,
                                "org/spongepowered/test/ast/LambdaTest", "lambda$2", "()Ljava/lang/Object;"),
                        Type.getType("()Ljava/lang/Object;") });
    } else {
        // javac adds an extra decoration to the lambda method name with the
        // name of the calling method
        mv.visitInvokeDynamicInsn("call", "()Ljava/util/concurrent/Callable;", new Handle(H_INVOKESTATIC,
                "java/lang/invoke/LambdaMetafactory", "metafactory",
                "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
                new Object[] { Type.getType("()Ljava/lang/Object;"),
                        new Handle(H_INVOKESTATIC, "org/spongepowered/test/ast/LambdaTest",
                                "lambda$test_producer$2", "()Ljava/lang/Object;"),
                        Type.getType("()Ljava/lang/Object;") });
    }
    mv.visitVarInsn(ASTORE, 1);
    Label l1 = new Label();
    mv.visitLabel(l1);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKEINTERFACE, "java/util/concurrent/Callable", "call", "()Ljava/lang/Object;", true);
    mv.visitInsn(POP);
    mv.visitInsn(RETURN);
    Label end = new Label();
    mv.visitLabel(end);
    mv.visitLocalVariable("this", "Lorg/spongepowered/test/ast/LambdaTest;", null, start, end, 0);
    mv.visitLocalVariable("r", "Ljava/util/concurrent/Callable;",
            "Ljava/util/concurrent/Callable<Ljava/lang/Object;>;", l1, end, 1);

    String insn = TestHelper.getAsString(builder.finish(), "test_mth");
    String good = "java.util.concurrent.Callable<Object> r = () -> null;\n" + "r.call();";
    Assert.assertEquals(good, insn);
}

From source file:org.spongepowered.test.ast.LambdaTest.java

License:Open Source License

@Test
public void testMethodRef() {
    TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(Ljava/lang/Runnable;)V");
    MethodVisitor mv = builder.getGenerator();
    Label start = new Label();
    mv.visitLabel(start);/*from w  w  w .ja v a  2s .c o m*/
    mv.visitVarInsn(ALOAD, 1);
    mv.visitInvokeDynamicInsn("run", "(Ljava/lang/Runnable;)Ljava/lang/Runnable;", new Handle(H_INVOKESTATIC,
            "java/lang/invoke/LambdaMetafactory", "metafactory",
            "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
            new Object[] { Type.getType("()V"),
                    new Handle(H_INVOKEINTERFACE, "java/lang/Runnable", "run", "()V"), Type.getType("()V") });
    mv.visitVarInsn(ASTORE, 2);
    Label l1 = new Label();
    mv.visitLabel(l1);
    mv.visitVarInsn(ALOAD, 2);
    mv.visitMethodInsn(INVOKEINTERFACE, "java/lang/Runnable", "run", "()V", true);
    mv.visitInsn(RETURN);
    Label end = new Label();
    mv.visitLabel(end);
    mv.visitLocalVariable("this", "Lorg/spongepowered/test/ast/LambdaTest;", null, start, end, 0);
    mv.visitLocalVariable("r", "Ljava/lang/Runnable;", null, start, end, 1);
    mv.visitLocalVariable("a", "Ljava/lang/Runnable;", null, l1, end, 2);

    String insn = TestHelper.getAsString(builder.finish(), "test_mth");
    String good = "Runnable a = r::run;\n" + "a.run();";
    Assert.assertEquals(good, insn);
}

From source file:org.spongepowered.test.ast.LambdaTest.java

License:Open Source License

@Test
public void testMethodRefJavac() {
    // apparently javac chooses it add a call to r.getClass() before the
    // method ref
    TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(Ljava/lang/Runnable;)V");
    MethodVisitor mv = builder.getGenerator();
    Label start = new Label();
    mv.visitLabel(start);/*from w  w  w .  j a  v  a 2  s. com*/
    mv.visitVarInsn(ALOAD, 1);
    mv.visitInsn(DUP);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;", false);
    mv.visitInsn(POP);
    mv.visitInvokeDynamicInsn("run", "(Ljava/lang/Runnable;)Ljava/lang/Runnable;", new Handle(H_INVOKESTATIC,
            "java/lang/invoke/LambdaMetafactory", "metafactory",
            "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
            new Object[] { Type.getType("()V"),
                    new Handle(H_INVOKEINTERFACE, "java/lang/Runnable", "run", "()V"), Type.getType("()V") });
    mv.visitVarInsn(ASTORE, 2);
    Label l1 = new Label();
    mv.visitLabel(l1);
    mv.visitVarInsn(ALOAD, 2);
    mv.visitMethodInsn(INVOKEINTERFACE, "java/lang/Runnable", "run", "()V", true);
    mv.visitInsn(RETURN);
    Label end = new Label();
    mv.visitLabel(end);
    mv.visitLocalVariable("this", "Lorg/spongepowered/test/ast/LambdaTest;", null, start, end, 0);
    mv.visitLocalVariable("r", "Ljava/lang/Runnable;", null, start, end, 1);
    mv.visitLocalVariable("a", "Ljava/lang/Runnable;", null, l1, end, 2);

    String insn = TestHelper.getAsString(builder.finish(), "test_mth");
    String good = "r.getClass();\n" + "Runnable a = r::run;\n" + "a.run();";
    Assert.assertEquals(good, insn);
}

From source file:st.redline.compiler.SmalltalkGeneratingVisitor.java

License:Open Source License

private void pushNewLambda(MethodVisitor mv, String className, String name, String sig, int line) {
    visitLine(mv, line);/*from  www  .  j  a  va  2 s . co  m*/
    pushReceiver(mv);
    mv.visitInvokeDynamicInsn("apply", "()Lst/redline/core/LambdaBlock;", new Handle(Opcodes.H_INVOKESTATIC,
            "java/lang/invoke/LambdaMetafactory", "metafactory",
            "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
            new Object[] { Type.getType(sig), new Handle(Opcodes.H_INVOKESTATIC, className, name, sig),
                    Type.getType(sig) });
}

From source file:suneido.runtime.DynamicIndy.java

License:Open Source License

public MethodHandle invokeDynamic(String name, MethodType desc, Class<?> bsmClass, String bsmName,
        MethodType bsmType, Object... bsmArgs) {
    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
    cw.visit(V1_7, ACC_PUBLIC | ACC_SUPER, "Gen" + (ID_GENERATOR++), null, "java/lang/Object", null);

    MethodVisitor init = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
    init.visitCode();//from   ww w .j a v  a  2 s . c  o m
    init.visitVarInsn(ALOAD, 0);
    init.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
    init.visitInsn(RETURN);
    init.visitMaxs(-1, -1);
    init.visitEnd();

    String descriptor = desc.toMethodDescriptorString();

    MethodVisitor mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "invokedynamic", descriptor, null, null);
    int slot = 0;
    for (Type parameterType : Type.getArgumentTypes(descriptor)) {
        mv.visitVarInsn(parameterType.getOpcode(ILOAD), slot);
        slot += parameterType.getSize();
    }

    mv.visitInvokeDynamicInsn(name, descriptor, new org.objectweb.asm.Handle(H_INVOKESTATIC,
            bsmClass.getName().replace('.', '/'), bsmName, bsmType.toMethodDescriptorString(), false), bsmArgs);

    Type returnType = Type.getReturnType(descriptor);
    mv.visitInsn(returnType.getOpcode(IRETURN));

    mv.visitMaxs(-1, -1);
    mv.visitEnd();

    cw.visitEnd();

    byte[] array = cw.toByteArray();
    Class<?> clazz = defineClass(null, array, 0, array.length);

    try {
        return MethodHandles.lookup().findStatic(clazz, "invokedynamic", desc);
    } catch (IllegalAccessException | NoSuchMethodException e) {
        throw (AssertionError) new AssertionError().initCause(e);
    }
}