Example usage for org.objectweb.asm MethodVisitor visitJumpInsn

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

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Introduction

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

Prototype

public void visitJumpInsn(final int opcode, final Label label)

Source Link

Document

Visits a jump instruction.

Usage

From source file:org.eclipse.golo.compiler.JavaBytecodeStructGenerator.java

License:Open Source License

private void makeGetMethod(ClassWriter classWriter, Struct struct) {
    String owner = struct.getPackageAndClass().toJVMType();
    MethodVisitor visitor = classWriter.visitMethod(ACC_PUBLIC, "get", "(Ljava/lang/String;)Ljava/lang/Object;",
            null, null);/*w  w w . jav a 2s.  c  o  m*/
    visitor.visitCode();
    insertPrivateElementCheck(struct, visitor);
    Label nextCase = new Label();
    for (Member member : struct.getMembers()) {
        visitor.visitLdcInsn(member.getName());
        visitor.visitVarInsn(ALOAD, 1);
        visitor.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "equals", "(Ljava/lang/Object;)Z", false);
        visitor.visitJumpInsn(IFEQ, nextCase);
        visitor.visitVarInsn(ALOAD, 0);
        visitor.visitMethodInsn(INVOKEVIRTUAL, owner, member.getName(), "()Ljava/lang/Object;", false);
        visitor.visitInsn(ARETURN);
        visitor.visitLabel(nextCase);
        nextCase = new Label();
    }
    insertUnknowElementCode(struct, visitor);
    visitor.visitMaxs(0, 0);
    visitor.visitEnd();
}

From source file:org.eclipse.golo.compiler.JavaBytecodeStructGenerator.java

License:Open Source License

private void insertPrivateElementCheck(Struct struct, MethodVisitor visitor) {
    Label afterPrivateCheck = new Label();
    visitor.visitVarInsn(ALOAD, 1);// www  . j  a  v a  2  s  .  co m
    visitor.visitLdcInsn("_");
    visitor.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "startsWith", "(Ljava/lang/String;)Z", false);
    visitor.visitJumpInsn(IFEQ, afterPrivateCheck);
    throwLocalized(visitor, "java/lang/IllegalArgumentException", "struct_private_member",
            struct.getPackageAndClass().toString());
    visitor.visitLabel(afterPrivateCheck);
}

From source file:org.eclipse.golo.compiler.JavaBytecodeStructGenerator.java

License:Open Source License

private void makeEquals(ClassWriter classWriter, Struct struct) {
    String owner = struct.getPackageAndClass().toJVMType();
    MethodVisitor visitor = classWriter.visitMethod(ACC_PUBLIC, "equals", "(Ljava/lang/Object;)Z", null, null);
    Label notFrozenLabel = new Label();
    Label falseLabel = new Label();
    Label sameTypeLabel = new Label();
    visitor.visitCode();//from  w ww .  ja v a  2  s.c  o m
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitFieldInsn(GETFIELD, owner, $_frozen, "Z");
    visitor.visitJumpInsn(IFNE, notFrozenLabel);
    // super.equals()
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitVarInsn(ALOAD, 1);
    visitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "equals", "(Ljava/lang/Object;)Z", false);
    visitor.visitInsn(IRETURN);
    // The receiver is frozen
    visitor.visitLabel(notFrozenLabel);
    visitor.visitVarInsn(ALOAD, 1);
    visitor.visitTypeInsn(INSTANCEOF, owner);
    visitor.visitJumpInsn(IFNE, sameTypeLabel);
    visitor.visitJumpInsn(GOTO, falseLabel);
    // The argument is of the same type, too
    visitor.visitLabel(sameTypeLabel);
    visitor.visitVarInsn(ALOAD, 1);
    visitor.visitTypeInsn(CHECKCAST, owner);
    visitor.visitFieldInsn(GETFIELD, owner, $_frozen, "Z");
    visitor.visitJumpInsn(IFEQ, falseLabel);
    // The argument is not frozen
    for (Member member : struct.getMembers()) {
        visitor.visitVarInsn(ALOAD, 0);
        visitor.visitFieldInsn(GETFIELD, owner, member.getName(), "Ljava/lang/Object;");
        visitor.visitVarInsn(ALOAD, 1);
        visitor.visitTypeInsn(CHECKCAST, owner);
        visitor.visitFieldInsn(GETFIELD, owner, member.getName(), "Ljava/lang/Object;");
        visitor.visitMethodInsn(INVOKESTATIC, "java/util/Objects", "equals",
                "(Ljava/lang/Object;Ljava/lang/Object;)Z", false);
        visitor.visitJumpInsn(IFEQ, falseLabel);
    }
    visitor.visitInsn(ICONST_1);
    visitor.visitInsn(IRETURN);
    // False
    visitor.visitLabel(falseLabel);
    visitor.visitInsn(ICONST_0);
    visitor.visitInsn(IRETURN);
    visitor.visitMaxs(0, 0);
    visitor.visitEnd();
}

From source file:org.eclipse.golo.compiler.JavaBytecodeStructGenerator.java

License:Open Source License

private void makeHashCode(ClassWriter classWriter, Struct struct) {
    String owner = struct.getPackageAndClass().toJVMType();
    MethodVisitor visitor = classWriter.visitMethod(ACC_PUBLIC, "hashCode", "()I", null, null);
    Label notFrozenLabel = new Label();
    visitor.visitCode();/*  w  w w . ja v a  2  s .c om*/
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitFieldInsn(GETFIELD, owner, $_frozen, "Z");
    visitor.visitJumpInsn(IFNE, notFrozenLabel);
    // super.hashCode()
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "hashCode", "()I", false);
    visitor.visitInsn(IRETURN);
    // The receiver is frozen
    visitor.visitLabel(notFrozenLabel);
    loadInteger(visitor, struct.getMembers().size());
    visitor.visitTypeInsn(ANEWARRAY, "java/lang/Object");
    int i = 0;
    for (Member member : struct.getMembers()) {
        visitor.visitInsn(DUP);
        loadInteger(visitor, i);
        visitor.visitVarInsn(ALOAD, 0);
        visitor.visitFieldInsn(GETFIELD, owner, member.getName(), "Ljava/lang/Object;");
        visitor.visitInsn(AASTORE);
        i++;
    }
    visitor.visitMethodInsn(INVOKESTATIC, "java/util/Objects", "hash", "([Ljava/lang/Object;)I", false);
    visitor.visitInsn(IRETURN);
    visitor.visitMaxs(0, 0);
    visitor.visitEnd();
}

From source file:org.eclipse.golo.compiler.JavaBytecodeStructGenerator.java

License:Open Source License

private void makeSetter(ClassWriter classWriter, String owner, String name, Struct struct) {
    int accessFlag = name.startsWith("_") ? ACC_PRIVATE : ACC_PUBLIC;
    MethodVisitor visitor = classWriter.visitMethod(accessFlag, name,
            "(Ljava/lang/Object;)L" + struct.getPackageAndClass().toJVMType() + ";", null, null);
    visitor.visitCode();//from   w  w  w  .  j a va 2s .  c  om
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitFieldInsn(GETFIELD, owner, $_frozen, "Z");
    Label setLabel = new Label();
    visitor.visitJumpInsn(IFEQ, setLabel);
    throwLocalized(visitor, "java/lang/IllegalStateException", "frozen_struct",
            struct.getPackageAndClass().toString());
    visitor.visitLabel(setLabel);
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitVarInsn(ALOAD, 1);
    visitor.visitFieldInsn(PUTFIELD, owner, name, "Ljava/lang/Object;");
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitInsn(ARETURN);
    visitor.visitMaxs(0, 0);
    visitor.visitEnd();
}

From source file:org.eclipse.golo.compiler.JavaBytecodeUnionGenerator.java

License:Open Source License

private void makeMatchlikeTestMethod(ClassWriter classWriter, UnionValue value, boolean result) {
    String methName = "is" + value.getName();
    MethodVisitor mv = classWriter.visitMethod(ACC_PUBLIC, methName, "()Z", null, null);
    mv.visitCode();//  www.  j  av  a2s. co m
    mv.visitInsn(result ? ICONST_1 : ICONST_0);
    mv.visitInsn(IRETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();

    if (value.hasMembers()) {
        mv = classWriter.visitMethod(ACC_PUBLIC, methName, argsSignature(value.getMembers().size()) + "Z", null,
                null);
        for (Member member : value.getMembers()) {
            mv.visitParameter(member.getName(), ACC_FINAL);
        }
        mv.visitCode();
        if (!result) {
            mv.visitInsn(ICONST_0);
        } else {
            int i = 1;
            Label allEquals = new Label();
            Label notEqual = new Label();
            String target = value.getPackageAndClass().toJVMType();
            for (Member member : value.getMembers()) {
                mv.visitVarInsn(ALOAD, i);
                mv.visitVarInsn(ALOAD, 0);
                mv.visitFieldInsn(GETFIELD, target, member.getName(), "Ljava/lang/Object;");
                mv.visitMethodInsn(INVOKESTATIC, "java/util/Objects", "equals",
                        "(Ljava/lang/Object;Ljava/lang/Object;)Z", false);
                mv.visitJumpInsn(IFEQ, notEqual);
                i++;
            }
            mv.visitInsn(ICONST_1);
            mv.visitJumpInsn(GOTO, allEquals);
            mv.visitLabel(notEqual);
            mv.visitInsn(ICONST_0);
            mv.visitLabel(allEquals);
        }
        mv.visitInsn(IRETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
}

From source file:org.eclipse.golo.compiler.JavaBytecodeUnionGenerator.java

License:Open Source License

private void makeEquals(ClassWriter cw, UnionValue value) {
    String target = value.getPackageAndClass().toJVMType();
    MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "equals", "(Ljava/lang/Object;)Z", null, null);
    Label notSameInstance = new Label();
    Label notNull = new Label();
    Label sameType = new Label();
    Label allAttrsEquals = new Label();
    Label attrNotEqual = new Label();
    mv.visitCode();//from   w  ww. j a v a2s .  c  o m

    // if (other == this) { return true; }
    mv.visitVarInsn(ALOAD, 1);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitJumpInsn(IF_ACMPNE, notSameInstance);
    mv.visitInsn(ICONST_1);
    mv.visitInsn(IRETURN);
    mv.visitLabel(notSameInstance);

    // if (other == null) { return false; }
    mv.visitVarInsn(ALOAD, 1);
    mv.visitJumpInsn(IFNONNULL, notNull);
    mv.visitInsn(ICONST_0);
    mv.visitInsn(IRETURN);
    mv.visitLabel(notNull);

    // if (!(other instanceof <value>)) { return false; }
    mv.visitVarInsn(ALOAD, 1);
    mv.visitTypeInsn(INSTANCEOF, target);
    mv.visitJumpInsn(IFNE, sameType);
    mv.visitInsn(ICONST_0);
    mv.visitInsn(IRETURN);
    mv.visitLabel(sameType);

    // cast other to <value>
    mv.visitVarInsn(ALOAD, 1);
    mv.visitTypeInsn(CHECKCAST, target);
    mv.visitVarInsn(ASTORE, 2);

    // java.util.Objects.equals(<member>, other.<member>)
    for (Member member : value.getMembers()) {
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, target, member.getName(), "Ljava/lang/Object;");
        mv.visitVarInsn(ALOAD, 2);
        mv.visitFieldInsn(GETFIELD, target, member.getName(), "Ljava/lang/Object;");
        mv.visitMethodInsn(INVOKESTATIC, "java/util/Objects", "equals",
                "(Ljava/lang/Object;Ljava/lang/Object;)Z", false);
        mv.visitJumpInsn(IFEQ, attrNotEqual);
    }
    mv.visitInsn(ICONST_1);
    mv.visitJumpInsn(GOTO, allAttrsEquals);
    mv.visitLabel(attrNotEqual);
    mv.visitInsn(ICONST_0);
    mv.visitLabel(allAttrsEquals);
    mv.visitInsn(IRETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:org.eclipse.m2m.atl.emftvm.jit.CodeBlockJIT.java

License:Open Source License

/**
 * Generates an execute method for the {@link JITCodeBlock}.
 * @param execute the execute method visitor
 * @param cb the {@link CodeBlock} to JIT-compile
 * @param className the name of the generated class
 *//*from   w  w  w.  ja  v a2s.  c  om*/
protected void generateExecute(final MethodVisitor execute, final CodeBlock cb, final String className) {
    execute.visitCode();
    // Generate labels
    final LabelSwitch ls = new LabelSwitch();
    for (Instruction instr : cb.getCode()) {
        ls.doSwitch(instr);
    }
    // Default labels
    final Label start = new Label();
    final Label end = new Label();
    final Label tryStart = new Label();
    final Label vmExceptionHandler = new Label();
    final Label exceptionHandler = new Label();
    final Label catchEnd = new Label();
    // Create exception table
    execute.visitTryCatchBlock(tryStart, vmExceptionHandler, vmExceptionHandler,
            Type.getInternalName(VMException.class));
    execute.visitTryCatchBlock(tryStart, vmExceptionHandler, exceptionHandler,
            Type.getInternalName(Exception.class));
    // Generate bytecode
    execute.visitLabel(start);
    execute.visitVarInsn(ALOAD, 1); // frame
    execute.visitMethodInsn(INVOKEVIRTUAL, Type.getInternalName(StackFrame.class), "getEnv",
            Type.getMethodDescriptor(Type.getType(ExecEnv.class), new Type[0]));
    execute.visitVarInsn(ASTORE, 2);
    execute.visitVarInsn(ALOAD, 2); // env
    execute.visitMethodInsn(INVOKEINTERFACE, Type.getInternalName(ExecEnv.class), "getMonitor",
            Type.getMethodDescriptor(Type.getType(VMMonitor.class), new Type[0]));
    execute.visitVarInsn(ASTORE, 3); // monitor
    execute.visitLabel(tryStart);
    final ByteCodeSwitch bs = new ByteCodeSwitch(this, execute, ls);
    final EList<Instruction> code = cb.getCode();
    final boolean hasMonitor = getEnv().getMonitor() != null;
    for (Instruction instr : code) {
        if (hasMonitor) {
            // do checkMonitor() before each instruction
            generateCheckMonitor(execute, code.indexOf(instr) + 1); // pc
        }
        // generate instruction-specific code
        bs.doSwitch(instr);
    }
    execute.visitJumpInsn(GOTO, catchEnd);
    // catch (VMException e)
    execute.visitLabel(vmExceptionHandler);
    execute.visitVarInsn(ASTORE, 4); // e
    execute.visitVarInsn(ALOAD, 4); // e
    execute.visitInsn(ATHROW); // throw e
    // catch (Exception e)
    execute.visitLabel(exceptionHandler);
    execute.visitVarInsn(ASTORE, 4); // e
    execute.visitTypeInsn(NEW, Type.getInternalName(VMException.class)); // new VMException(): [vme, ...]
    execute.visitInsn(DUP); // [vme, vme, e, ...]
    execute.visitVarInsn(ALOAD, 1); // frame: [frame, vme, vme, ...]
    execute.visitVarInsn(ALOAD, 4); // e: [e, frame, vme, vme, ...]
    execute.visitMethodInsn(INVOKESPECIAL, // new VMException(frame, e): [vme, ...]
            Type.getInternalName(VMException.class), "<init>", Type.getMethodDescriptor(Type.VOID_TYPE,
                    new Type[] { Type.getType(StackFrame.class), Type.getType(Throwable.class) }));
    execute.visitInsn(ATHROW); // throw vme
    // Regular method return
    execute.visitLabel(catchEnd);
    if (cb.getStackLevel() == 0) {
        execute.visitInsn(ACONST_NULL); // push null
    }
    execute.visitInsn(ARETURN); // return result
    execute.visitLabel(end);
    // Create local variable table
    execute.visitLocalVariable("this", "L" + className + ";", null, start, end, 0);
    execute.visitLocalVariable("frame", Type.getDescriptor(StackFrame.class), null, start, end, 1);
    execute.visitLocalVariable("env", Type.getDescriptor(ExecEnv.class), null, start, end, 2);
    execute.visitLocalVariable("monitor", Type.getDescriptor(VMMonitor.class), null, start, end, 3);
    execute.visitLocalVariable("e", Type.getDescriptor(VMException.class), null, vmExceptionHandler,
            exceptionHandler, 4);
    execute.visitLocalVariable("e", Type.getDescriptor(Exception.class), null, exceptionHandler, catchEnd, 4);
    // Finalise
    execute.visitMaxs(0, 0); // recalculate 
    execute.visitEnd();
}

From source file:org.eclipse.m2m.atl.emftvm.jit.CodeBlockJIT.java

License:Open Source License

/**
 * Generates bytecode for checking the VM monitor
 * @param mv the method visitor to generate code for
 * @param pc the current program counter
 *///from  w  ww .j  av  a 2 s  .  c  o  m
protected static void generateCheckMonitor(final MethodVisitor mv, final int pc) {
    // Labels
    final Label notTerminated = new Label();
    // Generate bytecode
    mv.visitVarInsn(ALOAD, 3); // monitor: [..., monitor]
    mv.visitMethodInsn(INVOKEINTERFACE, // monitor.isTerminated(): [..., boolean]
            Type.getInternalName(VMMonitor.class), "isTerminated",
            Type.getMethodDescriptor(Type.BOOLEAN_TYPE, new Type[0]));
    mv.visitJumpInsn(IFEQ, notTerminated); // jump if isTerminated == false: [...]
    mv.visitTypeInsn(NEW, Type.getInternalName(VMException.class)); // new VMException: [..., vme]
    mv.visitInsn(DUP); // [..., vme, vme]
    mv.visitVarInsn(ALOAD, 1); // frame: [..., vme, vme, frame]
    mv.visitLdcInsn("Execution terminated."); // [..., vme, vme, frame, msg]
    mv.visitMethodInsn(INVOKESPECIAL, // vme.<init>(frame, msg): [..., vme]
            Type.getInternalName(VMException.class), "<init>", Type.getMethodDescriptor(Type.VOID_TYPE,
                    new Type[] { Type.getType(StackFrame.class), Type.getType(String.class) }));
    mv.visitInsn(ATHROW); // throw vme: [...]
    mv.visitLabel(notTerminated);
    mv.visitVarInsn(ALOAD, 1); // frame: [..., frame]
    generatePushInt(mv, pc); // [..., frame, pc]
    mv.visitMethodInsn(INVOKEVIRTUAL, // frame.setPc(pc): [...] 
            Type.getInternalName(StackFrame.class), "setPc",
            Type.getMethodDescriptor(Type.VOID_TYPE, new Type[] { Type.INT_TYPE }));
    mv.visitVarInsn(ALOAD, 3); // monitor: [..., monitor]
    mv.visitVarInsn(ALOAD, 1); // frame: [..., monitor, frame]
    mv.visitMethodInsn(INVOKEINTERFACE, // monitor.step(frame): [...]
            Type.getInternalName(VMMonitor.class), "step",
            Type.getMethodDescriptor(Type.VOID_TYPE, new Type[] { Type.getType(StackFrame.class) }));
}

From source file:org.eclipse.objectteams.otredyn.bytecode.asm.AddGlobalTeamActivationAdapter.java

License:Open Source License

@Override
public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
    synchronized (AddGlobalTeamActivationAdapter.class) {
        if (!done && isMainMethod(name, desc, access)) {
            done = true;//  ww w  . ja  v a  2 s. c o  m
            final MethodVisitor methodVisitor = cv.visitMethod(access, name, desc, null, null);
            return new AdviceAdapter(this.api, methodVisitor, access, name, desc) {
                @Override
                protected void onMethodEnter() {
                    List<String> teams = getTeamsFromConfigFile();
                    for (String aTeam : teams) {
                        Label start, end, typeHandler, ctorHandler, after;

                        String aTeamSlash = aTeam.replace('.', '/');

                        // new SomeTeam():
                        methodVisitor.visitLabel(start = new Label());
                        methodVisitor.visitTypeInsn(Opcodes.NEW, aTeamSlash);
                        //       .activate(Team.ALL_THREADS):
                        methodVisitor.visitInsn(Opcodes.DUP);
                        methodVisitor.visitMethodInsn(Opcodes.INVOKESPECIAL, aTeamSlash, "<init>", "()V",
                                false);
                        methodVisitor.visitFieldInsn(Opcodes.GETSTATIC, ClassNames.TEAM_SLASH, "ALL_THREADS",
                                "Ljava/lang/Thread;");
                        methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, aTeamSlash, "activate",
                                "(Ljava/lang/Thread;)V", false);

                        methodVisitor.visitLabel(end = new Label());
                        methodVisitor.visitJumpInsn(Opcodes.GOTO, after = new Label());

                        // catch (ClassNotFoundException, NoClassDefFoundError):
                        //   System.err.println(...)
                        methodVisitor.visitLabel(typeHandler = new Label());
                        methodVisitor.visitInsn(Opcodes.POP); // discard the exception
                        methodVisitor.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/System", "err",
                                "Ljava/io/PrintStream;");
                        methodVisitor.visitLdcInsn("Config error: Team class '" + aTeam + "' in config file '"
                                + TEAM_CONFIG_FILE + "' can not be found!");
                        methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/io/PrintStream", "println",
                                "(Ljava/lang/String;)V", false);
                        methodVisitor.visitJumpInsn(Opcodes.GOTO, after);
                        methodVisitor.visitTryCatchBlock(start, end, typeHandler,
                                "java/lang/ClassNotFoundException");
                        // dup to avoid stackmap errors (ASM bug at 1.8)
                        methodVisitor.visitLabel(typeHandler = new Label());
                        methodVisitor.visitInsn(Opcodes.POP); // discard the exception
                        methodVisitor.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/System", "err",
                                "Ljava/io/PrintStream;");
                        methodVisitor.visitLdcInsn("Config error: Team class '" + aTeam + "' in config file '"
                                + TEAM_CONFIG_FILE + "' can not be found!");
                        methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/io/PrintStream", "println",
                                "(Ljava/lang/String;)V", false);
                        methodVisitor.visitJumpInsn(Opcodes.GOTO, after);
                        //
                        methodVisitor.visitTryCatchBlock(start, end, typeHandler,
                                "java/lang/NoClassDefFoundError");

                        // catch (NoSuchMethodError):
                        //   System.err.println(...)
                        methodVisitor.visitLabel(ctorHandler = new Label());
                        methodVisitor.visitInsn(Opcodes.POP); // discard the exception
                        methodVisitor.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/System", "err",
                                "Ljava/io/PrintStream;");
                        methodVisitor.visitLdcInsn(
                                "Activation failed: Team class '" + aTeam + "' has no default constuctor!");
                        methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/io/PrintStream", "println",
                                "(Ljava/lang/String;)V", false);
                        methodVisitor.visitTryCatchBlock(start, end, ctorHandler,
                                "java/lang/NoSuchMethodError");

                        methodVisitor.visitLabel(after);
                    }
                }

                @Override
                public void visitMaxs(int maxStack, int maxLocals) {
                    super.visitMaxs(Math.max(maxStack, 3), maxLocals);
                }
            };
        }
        return null;
    }
}