Package org.apache.xbean.asm4

Examples of org.apache.xbean.asm4.MethodVisitor.visitVarInsn()

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        // invoke getMethod() with the method name and the array of types
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getDeclaredMethod", "(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;", false);

        // store the returned method for later
        mv.visitVarInsn(ASTORE, length);

        // the following code generates bytecode equivalent to:
        // return ((<returntype>) invocationHandler.invoke(this, method, new Object[] { <function arguments }))[.<primitive>Value()];

        final Label l4 = new Label();
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        // the following code generates bytecode equivalent to:
        // return ((<returntype>) invocationHandler.invoke(this, method, new Object[] { <function arguments }))[.<primitive>Value()];

        final Label l4 = new Label();
        mv.visitLabel(l4);
        mv.visitVarInsn(ALOAD, 0);

        // get the invocationHandler field from this class
        mv.visitFieldInsn(GETFIELD, proxyName, handlerName, "Ljava/lang/reflect/InvocationHandler;");

        // we want to pass "this" in as the first parameter
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        // get the invocationHandler field from this class
        mv.visitFieldInsn(GETFIELD, proxyName, handlerName, "Ljava/lang/reflect/InvocationHandler;");

        // we want to pass "this" in as the first parameter
        mv.visitVarInsn(ALOAD, 0);

        // and the method we fetched earlier
        mv.visitVarInsn(ALOAD, length);

        // need to construct the array of objects passed in
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        // we want to pass "this" in as the first parameter
        mv.visitVarInsn(ALOAD, 0);

        // and the method we fetched earlier
        mv.visitVarInsn(ALOAD, length);

        // need to construct the array of objects passed in

        // create the Object[]
        createArrayDefinition(mv, parameterTypes.length, Object.class);
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            // push number onto stack
            pushIntOntoStack(mv, i);

            if (parameterType.isPrimitive()) {
                final String wrapperType = getWrapperType(parameterType);
                mv.visitVarInsn(getVarInsn(parameterType), index);

                mv.visitMethodInsn(INVOKESTATIC, wrapperType, "valueOf", "(" + getPrimitiveLetter(parameterType) + ")L" + wrapperType + ";", false);
                mv.visitInsn(AASTORE);

                if (Long.TYPE.equals(parameterType) || Double.TYPE.equals(parameterType)) {
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                    index += 2;
                } else {
                    index++;
                }
            } else {
                mv.visitVarInsn(ALOAD, index);
                mv.visitInsn(AASTORE);
                index++;
            }
        }
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        }

        // catch InvocationTargetException
        if (exceptionTypes.length > 0) {
            mv.visitLabel(l2);
            mv.visitVarInsn(ASTORE, length);

            final Label l5 = new Label();
            mv.visitLabel(l5);

            for (int i = 0; i < exceptionTypes.length; i++) {
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            for (int i = 0; i < exceptionTypes.length; i++) {
                final Class<?> exceptionType = exceptionTypes[i];

                mv.visitLdcInsn(Type.getType("L" + exceptionType.getName().replace('.', '/') + ";"));
                mv.visitVarInsn(ALOAD, length);
                mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/InvocationTargetException", "getCause", "()Ljava/lang/Throwable;", false);
                mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;", false);
                mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "equals", "(Ljava/lang/Object;)Z", false);

                final Label l6 = new Label();
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                mv.visitJumpInsn(IFEQ, l6);

                final Label l7 = new Label();
                mv.visitLabel(l7);

                mv.visitVarInsn(ALOAD, length);
                mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/InvocationTargetException", "getCause", "()Ljava/lang/Throwable;", false);
                mv.visitTypeInsn(CHECKCAST, exceptionType.getName().replace('.', '/'));
                mv.visitInsn(ATHROW);
                mv.visitLabel(l6);
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                mv.visitLabel(l6);

                if (i == exceptionTypes.length - 1) {
                    mv.visitTypeInsn(NEW, "java/lang/reflect/UndeclaredThrowableException");
                    mv.visitInsn(DUP);
                    mv.visitVarInsn(ALOAD, length);
                    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/reflect/UndeclaredThrowableException", "<init>", "(Ljava/lang/Throwable;)V", false);
                    mv.visitInsn(ATHROW);
                }
            }
        }
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