Example usage for org.objectweb.asm MethodVisitor visitLocalVariable

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

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Introduction

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

Prototype

public void visitLocalVariable(final String name, final String descriptor, final String signature,
        final Label start, final Label end, final int index)

Source Link

Document

Visits a local variable declaration.

Usage

From source file:org.ballerinalang.nativeimpl.jvm.methodvisitor.VisitLocalVariable.java

License:Open Source License

public static void visitLocalVariable(Strand strand, ObjectValue oMv, String varName, String descriptor,
        ObjectValue oStartLabel, ObjectValue oEndLabel, long index) {
    MethodVisitor mv = ASMUtil.getRefArgumentNativeData(oMv);
    Label startLabel = ASMUtil.getRefArgumentNativeData(oStartLabel);
    Label endLabel = ASMUtil.getRefArgumentNativeData(oEndLabel);
    mv.visitLocalVariable(varName, descriptor, null, startLabel, endLabel, (int) index);
}

From source file:org.batoo.jpa.core.impl.instance.Enhancer.java

License:Open Source License

private static void createContainerConstructor(final String enhancingClassName, final String enhancedClassName,
        final String descEnhancer, final ClassWriter cw) {
    final MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, Enhancer.CONSTRUCTOR_INIT,
            Enhancer.makeDescription(Void.TYPE, Class.class, SessionImpl.class, Object.class, Boolean.TYPE),
            null, null);/*from w ww.  ja v  a2  s .co m*/
    mv.visitCode();

    final Label l0 = new Label();
    mv.visitLabel(l0);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, enhancingClassName, Enhancer.CONSTRUCTOR_INIT,
            Enhancer.makeDescription(Void.TYPE));

    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitFieldInsn(Opcodes.PUTFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_TYPE,
            Enhancer.DESCRIPTOR_CLASS);

    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitVarInsn(Opcodes.ALOAD, 2);
    mv.visitFieldInsn(Opcodes.PUTFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_SESSION,
            Enhancer.DESCRIPTOR_SESSION);

    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitVarInsn(Opcodes.ALOAD, 3);
    mv.visitFieldInsn(Opcodes.PUTFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_ID,
            Enhancer.DESCRIPTOR_OBJECT);

    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitVarInsn(Opcodes.ILOAD, 4);
    mv.visitFieldInsn(Opcodes.PUTFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_INITIALIZED,
            Enhancer.DESCRIPTOR_BOOLEAN);

    mv.visitInsn(Opcodes.RETURN);

    final Label l1 = new Label();
    mv.visitLabel(l1);
    mv.visitLocalVariable(Enhancer.THIS, descEnhancer, null, l0, l1, 0);
    mv.visitLocalVariable("type", Enhancer.DESCRIPTOR_CLASS, null, l0, l1, 1);
    mv.visitLocalVariable("session", Enhancer.DESCRIPTOR_SESSION, null, l0, l1, 2);
    mv.visitLocalVariable("id", Enhancer.DESCRIPTOR_OBJECT, null, l0, l1, 3);
    mv.visitLocalVariable("initialized", Enhancer.DESCRIPTOR_BOOLEAN, null, l0, l1, 4);
    mv.visitMaxs(0, 0);

    mv.visitEnd();
}

From source file:org.batoo.jpa.core.impl.instance.Enhancer.java

License:Open Source License

private static void createMethodCheck(final String enhancedClassName, final String descEnhancer,
        final ClassWriter cw) {
    final MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PRIVATE, Enhancer.METHOD_ENHANCED_CHECK,
            Enhancer.makeDescription(Void.TYPE), null, null);
    mv.visitCode();/*from   w  ww  .j a  va2  s.co m*/

    final Label lCheckInternal = new Label();
    final Label lCheckInitialized = new Label();
    final Label lReturn = new Label();
    final Label lFind = new Label();
    final Label lInitialized = new Label();
    final Label lChanged = new Label();
    final Label lOut = new Label();

    // if (!this.__enhanced__$$__internal) { return }
    mv.visitLabel(lCheckInternal);
    mv.visitFrame(Opcodes.F_NEW, 1, new Object[] { enhancedClassName }, 0, new Object[] {});
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_INTERNAL,
            Enhancer.DESCRIPTOR_BOOLEAN);
    mv.visitJumpInsn(Opcodes.IFEQ, lCheckInitialized);
    mv.visitInsn(Opcodes.RETURN);

    // if (!this.__enhanced__$$__initialized) {
    mv.visitLabel(lCheckInitialized);
    mv.visitFrame(Opcodes.F_NEW, 1, new Object[] { enhancedClassName }, 0, new Object[] {});
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_INITIALIZED,
            Enhancer.DESCRIPTOR_BOOLEAN);
    mv.visitJumpInsn(Opcodes.IFNE, lChanged);

    //     if (this.__enhanced_$$__session == null)
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_SESSION,
            Enhancer.DESCRIPTOR_SESSION);
    mv.visitJumpInsn(Opcodes.IFNONNULL, lFind);

    //         throw new PersistenceException("No session to initialize the instance");
    mv.visitTypeInsn(Opcodes.NEW, Enhancer.INTERNAL_PERSISTENCE_EXCEPTION);
    mv.visitInsn(Opcodes.DUP);
    mv.visitLdcInsn("No session to initialize the instance");
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, Enhancer.INTERNAL_PERSISTENCE_EXCEPTION,
            Enhancer.CONSTRUCTOR_INIT, Enhancer.makeDescription(Void.TYPE, String.class));
    mv.visitInsn(Opcodes.ATHROW);

    //       this.__enhanced_$$__session.getEntityManager().find(this.__enhanced_$$__type, this.__enhanced__$$__id);
    mv.visitLabel(lFind);
    mv.visitFrame(Opcodes.F_NEW, 1, new Object[] { enhancedClassName }, 0, new Object[] {});
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_SESSION,
            Enhancer.DESCRIPTOR_SESSION);
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Enhancer.INTERNAL_SESSION, Enhancer.METHOD_GET_ENTITY_MANAGER,
            Enhancer.makeDescription(EntityManagerImpl.class));
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_TYPE,
            Enhancer.DESCRIPTOR_CLASS);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_ID,
            Enhancer.DESCRIPTOR_OBJECT);
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Enhancer.INTERNAL_ENTITY_MANAGER, Enhancer.METHOD_FIND,
            Enhancer.makeDescription(Object.class, Class.class, Object.class));
    mv.visitInsn(Opcodes.POP);

    //   this.__enhanced__$$__initialized = true;
    mv.visitLabel(lInitialized);
    mv.visitFrame(Opcodes.F_NEW, 1, new Object[] { enhancedClassName }, 0, new Object[] {});
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitInsn(Opcodes.ICONST_1);
    mv.visitFieldInsn(Opcodes.PUTFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_INITIALIZED,
            Enhancer.DESCRIPTOR_BOOLEAN);

    // if (this.__enhanced_$$__session != null)
    mv.visitLabel(lChanged);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_SESSION,
            Enhancer.DESCRIPTOR_SESSION);
    mv.visitJumpInsn(Opcodes.IFNULL, lReturn);

    //     this.__enhanced__$$__managedInstance.changed();
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_MANAGED_INSTANCE,
            Enhancer.DESCRIPTOR_MANAGED_INSTANCE);
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Enhancer.INTERNAL_MANAGED_INSTANCE, Enhancer.METHOD_CHANGED,
            Enhancer.makeDescription(Void.TYPE));

    // return;
    mv.visitLabel(lReturn);
    mv.visitFrame(Opcodes.F_NEW, 1, new Object[] { enhancedClassName }, 0, new Object[] {});
    mv.visitInsn(Opcodes.RETURN);

    mv.visitLabel(lOut);
    mv.visitLocalVariable(Enhancer.THIS, descEnhancer, null, lCheckInternal, lOut, 0);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:org.batoo.jpa.core.impl.instance.Enhancer.java

License:Open Source License

private static void createMethodGetManagedInstance(final String enhancedClassName, final String descEnhancer,
        final ClassWriter cw) {
    final MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, Enhancer.METHOD_ENHANCED_GET_MANAGED_INSTANCE,
            Enhancer.makeDescription(ManagedInstance.class), null, null);
    mv.visitCode();// ww  w.  j  a  v  a  2  s  .c  om

    final Label l0 = new Label();
    mv.visitLabel(l0);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_MANAGED_INSTANCE,
            Enhancer.DESCRIPTOR_MANAGED_INSTANCE);
    mv.visitInsn(Opcodes.ARETURN);

    final Label l1 = new Label();
    mv.visitLabel(l1);
    mv.visitLocalVariable(Enhancer.THIS, descEnhancer, null, l0, l1, 0);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:org.batoo.jpa.core.impl.instance.Enhancer.java

License:Open Source License

private static void createMethodIsInitialized(final String enhancedClassName, final String descEnhancer,
        final ClassWriter cw) {
    final MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, Enhancer.METHOD_ENHANCED_IS_INITIALIZED,
            Enhancer.makeDescription(Boolean.TYPE), null, null);
    mv.visitCode();//ww  w. j  a v  a 2  s. c  o  m

    final Label l0 = new Label();
    mv.visitLabel(l0);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_INITIALIZED,
            Enhancer.DESCRIPTOR_BOOLEAN);
    mv.visitInsn(Opcodes.IRETURN);

    final Label l1 = new Label();
    mv.visitLabel(l1);
    mv.visitLocalVariable(Enhancer.THIS, descEnhancer, null, l0, l1, 0);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:org.batoo.jpa.core.impl.instance.Enhancer.java

License:Open Source License

private static void createMethodSetInitialized(final String enhancedClassName, final String descEnhancer,
        final ClassWriter cw) {
    final MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, Enhancer.METHOD_ENHANCED_SET_INITIALIZED,
            Enhancer.makeDescription(Void.TYPE), null, null);
    mv.visitCode();/*from  w  w  w  . j  av  a2s.  co m*/

    final Label l0 = new Label();
    mv.visitLabel(l0);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitInsn(Opcodes.ICONST_1);
    mv.visitFieldInsn(Opcodes.PUTFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_INITIALIZED,
            Enhancer.DESCRIPTOR_BOOLEAN);

    mv.visitInsn(Opcodes.RETURN);

    final Label l1 = new Label();
    mv.visitLabel(l1);
    mv.visitLocalVariable(Enhancer.THIS, descEnhancer, null, l0, l1, 0);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:org.batoo.jpa.core.impl.instance.Enhancer.java

License:Open Source License

private static void createMethodSetInternal(final String enhancedClassName, final String descEnhancer,
        final ClassWriter cw) {
    final MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, Enhancer.METHOD_ENHANCED_SET_INTERNAL,
            Enhancer.makeDescription(Void.TYPE, Boolean.TYPE), null, null);
    mv.visitCode();/*from  ww w.  j  a  v  a2s. c om*/

    final Label l0 = new Label();
    mv.visitLabel(l0);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitVarInsn(Opcodes.ILOAD, 1);
    mv.visitFieldInsn(Opcodes.PUTFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_INTERNAL,
            Enhancer.DESCRIPTOR_BOOLEAN);

    mv.visitInsn(Opcodes.RETURN);

    final Label l1 = new Label();
    mv.visitLabel(l1);
    mv.visitLocalVariable(Enhancer.THIS, descEnhancer, null, l0, l1, 0);
    mv.visitLocalVariable("internal", Enhancer.DESCRIPTOR_BOOLEAN, null, l0, l1, 1);
    mv.visitMaxs(0, 0);
    mv.visitEnd();

    //      final MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "__enhanced__$$__setInternalCall", "(Z)V", null, null);
    //      mv.visitCode();
    //      final Label l0 = new Label();
    //      mv.visitLabel(l0);
    //      mv.visitLineNumber(81, l0);
    //      mv.visitVarInsn(Opcodes.ALOAD, 0);
    //      mv.visitVarInsn(Opcodes.ILOAD, 1);
    //      mv.visitFieldInsn(Opcodes.PUTFIELD, descEnhancer, Enhancer.FIELD_ENHANCED_INTERNAL, Enhancer.DESCRIPTOR_BOOLEAN);
    //      final Label l1 = new Label();
    //      mv.visitLabel(l1);
    //      mv.visitLineNumber(82, l1);
    //      mv.visitInsn(Opcodes.RETURN);
    //      final Label l2 = new Label();
    //      mv.visitLabel(l2);
    //      mv.visitLocalVariable("this", descEnhancer, null, l0, l2, 0);
    //      mv.visitLocalVariable("internal", "Z", null, l0, l2, 1);
    //      mv.visitMaxs(2, 2);
    //      mv.visitEnd();
}

From source file:org.batoo.jpa.core.impl.instance.Enhancer.java

License:Open Source License

private static void createMethodSetManagedInstance(final String enhancedClassName, final String descEnhancer,
        final ClassWriter cw) {
    final MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, Enhancer.METHOD_ENHANCED_SET_MANAGED_INSTANCE,
            Enhancer.makeDescription(Void.TYPE, ManagedInstance.class), null, null);
    mv.visitCode();/*from   ww w .j a v a2s .c o  m*/

    final Label l0 = new Label();
    mv.visitLabel(l0);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitFieldInsn(Opcodes.PUTFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_MANAGED_INSTANCE,
            Enhancer.DESCRIPTOR_MANAGED_INSTANCE);

    mv.visitInsn(Opcodes.RETURN);

    final Label l1 = new Label();
    mv.visitLabel(l1);
    mv.visitLocalVariable(Enhancer.THIS, descEnhancer, null, l0, l1, 0);
    mv.visitLocalVariable("instance", Enhancer.DESCRIPTOR_MANAGED_INSTANCE, null, l0, l1, 1);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:org.batoo.jpa.core.impl.instance.Enhancer.java

License:Open Source License

private static void createNoArgConstructor(final String enhancingClassName, final String enhancedClassName,
        final String descEnhancer, final ClassWriter cw) {
    final MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, Enhancer.CONSTRUCTOR_INIT,
            Enhancer.makeDescription(Void.TYPE), null, null);
    mv.visitCode();/*from ww  w.j  a  va  2  s  . co m*/

    final Label l0 = new Label();
    mv.visitLabel(l0);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, enhancingClassName, Enhancer.CONSTRUCTOR_INIT,
            Enhancer.makeDescription(Void.TYPE));

    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitInsn(Opcodes.ACONST_NULL);
    mv.visitFieldInsn(Opcodes.PUTFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_ID,
            Enhancer.DESCRIPTOR_OBJECT);

    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitInsn(Opcodes.ACONST_NULL);
    mv.visitFieldInsn(Opcodes.PUTFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_TYPE,
            Enhancer.DESCRIPTOR_CLASS);

    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitInsn(Opcodes.ACONST_NULL);
    mv.visitFieldInsn(Opcodes.PUTFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_SESSION,
            Enhancer.DESCRIPTOR_SESSION);

    mv.visitInsn(Opcodes.RETURN);

    final Label l1 = new Label();
    mv.visitLabel(l1);
    mv.visitLocalVariable(Enhancer.THIS, descEnhancer, null, l0, l1, 0);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:org.batoo.jpa.core.impl.instance.Enhancer.java

License:Open Source License

private static void registerLocals(final String descEnhancer, Method method, final MethodVisitor mv,
        final Label l0, final Label l) {
    mv.visitLocalVariable(Enhancer.THIS, descEnhancer, null, l0, l, 0);
    for (int i = 0, r = 1; i < method.getParameterTypes().length; i++, r++) {
        final Class<?> paramClass = method.getParameterTypes()[i];
        mv.visitLocalVariable("arg" + i, Type.getDescriptor(paramClass), null, l0, l, r);

        if ((paramClass == Double.TYPE) || (paramClass == Long.TYPE)) {
            r++;/*from   w w w.ja  v a 2  s .  c om*/
        }
    }
}