org.raspinloop.agent.internal.aspect.SpiFactoryAspect.java Source code

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Here is the source code for org.raspinloop.agent.internal.aspect.SpiFactoryAspect.java

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/*******************************************************************************
 * Copyright 2018 RaspInLoop
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License.  You may obtain a copy
 * of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations under
 * the License.
 ******************************************************************************/
package org.raspinloop.agent.internal.aspect;

import java.io.IOException;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.raspinloop.hwemulation.SpiEmulation;

import com.pi4j.io.spi.SpiChannel;
import com.pi4j.io.spi.SpiMode;

@Aspect
public class SpiFactoryAspect {

    @Around("call(com.pi4j.io.spi.SpiDevice com.pi4j.io.spi.SpiFactory.getInstance(..)) ")
    public com.pi4j.io.spi.SpiDevice spiGetInstance(ProceedingJoinPoint joinPoint) throws Throwable {
        Object[] args = joinPoint.getArgs();

        if (args.length == 1 && args[0] instanceof SpiChannel)
            return Adapters.forPi4j(SpiEmulation.getInstance(Adapters.forPi4j((SpiChannel) args[0])));

        if (args.length == 2 && args[0] instanceof SpiChannel && args[1] instanceof SpiMode)
            return Adapters.forPi4j(SpiEmulation.getInstance(Adapters.forPi4j((SpiChannel) args[0]),
                    Adapters.forPi4j((SpiMode) args[1])));
        if (args.length == 2 && args[0] instanceof SpiChannel && args[1] instanceof Integer)
            return Adapters
                    .forPi4j(SpiEmulation.getInstance(Adapters.forPi4j((SpiChannel) args[0]), (Integer) args[1]));

        if (args.length == 3 && args[0] instanceof SpiChannel && args[1] instanceof Integer
                && args[2] instanceof SpiMode)
            return Adapters.forPi4j(SpiEmulation.getInstance(Adapters.forPi4j((SpiChannel) args[0]),
                    (Integer) args[1], Adapters.forPi4j((SpiMode) args[2])));

        throw new IOException("Invalid parameter in call to SPIFactory.getInstance.");

    }
}