Package org.objectweb.asm

Examples of org.objectweb.asm.ClassWriter.visitMethod()

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    @Deprecated
    private ClassWriter createCtor(String namePath) throws Exception {
        ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
        cw.visit(V1_4, ACC_PUBLIC + ACC_SUPER, namePath, null, SUPER_CLASS, null);
        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, SUPER_CLASS, "<init>", "()V");
        Label line = new Label();
        mv.visitLineNumber(0, line);
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    @Deprecated
    private ClassWriter createCtorFast(String namePath) throws Exception {
        ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
        cw.visit(V1_4, ACC_PUBLIC + ACC_SUPER, namePath, null, FAST_SUPER_CLASS, null);
        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, FAST_SUPER_CLASS, "<init>", "()V");
        Label line = new Label();
        mv.visitLineNumber(0, line);
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            av0.visit("name", "");           
        }
        av0.visitEnd();

        // add constructor
        MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        Label lbegin = new Label();
        mv.visitLabel(lbegin);
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
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                String beanClassCode = getClassCode(bean);
                fv = cw.visitField(0, "faultInfo", beanClassCode, null, null);
                fv.visitEnd();
                               
               
                mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>",
                                    "(Ljava/lang/String;" + beanClassCode + ")V", null, null);
                mv.visitCode();
                mv.visitLabel(new Label());
                mv.visitVarInsn(Opcodes.ALOAD, 0);
                mv.visitVarInsn(Opcodes.ALOAD, 1);
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                mv.visitInsn(Opcodes.RETURN);
                mv.visitLabel(new Label());
                mv.visitMaxs(2, 3);
                mv.visitEnd();

                mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "getFaultInfo",
                                    "()" + beanClassCode, null, null);
                mv.visitCode();
                mv.visitLabel(new Label());
                mv.visitVarInsn(Opcodes.ALOAD, 0);
                mv.visitFieldInsn(Opcodes.GETFIELD, newClassName, "faultInfo", beanClassCode);
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            av0.visit("name", "");           
        }
        av0.visitEnd();

        // add constructor
        MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        Label lbegin = new Label();
        mv.visitLabel(lbegin);
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
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    Class<?> createBeanClass() {
        ClassWriter writer = new ClassWriter(0);
        String name = prefix + Integer.toString(generatedClassCounter.addAndGet(1));
        writer.visit(Opcodes.V1_6, Opcodes.ACC_PUBLIC, name, null, "java/lang/Object", null);
        MethodVisitor methodVisitor = writer.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, null);
        methodVisitor.visitCode();
        methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
        methodVisitor.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
        methodVisitor.visitInsn(Opcodes.RETURN);
        methodVisitor.visitMaxs(1,1);
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            // (b) copy-constructor which takes StdValueInstantiator instance, passes to superclass
            final String optimizedValueInstDesc = Type.getDescriptor(OptimizedValueInstantiator.class);
            final String stdValueInstDesc = Type.getDescriptor(StdValueInstantiator.class);

            // default (no-arg) constructor:
            MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 0);
            mv.visitMethodInsn(INVOKESPECIAL, superClass, "<init>", "()V");
            mv.visitInsn(RETURN);
            mv.visitMaxs(0, 0);
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            mv.visitMethodInsn(INVOKESPECIAL, superClass, "<init>", "()V");
            mv.visitInsn(RETURN);
            mv.visitMaxs(0, 0);
            mv.visitEnd();
            // then single-arg constructor
            mv = cw.visitMethod(ACC_PUBLIC, "<init>", "("+stdValueInstDesc+")V", null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 0);
            mv.visitVarInsn(ALOAD, 1);
            mv.visitMethodInsn(INVOKESPECIAL, superClass, "<init>", "("+stdValueInstDesc+")V");
            mv.visitInsn(RETURN);
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            mv.visitMaxs(0, 0);
            mv.visitEnd();

            // and then non-static factory method to use second constructor (implements base-class method)
            // protected abstract OptimizedValueInstantiator with(StdValueInstantiator src);
            mv = cw.visitMethod(ACC_PUBLIC, "with", "("
                    +stdValueInstDesc+")"+optimizedValueInstDesc, null, null);
            mv.visitCode();
            mv.visitTypeInsn(NEW, generatedClass);
            mv.visitInsn(DUP);
            mv.visitVarInsn(ALOAD, 1);
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