/*
 *
 * Copyright (c) 2009-2012,
 *
 *  Adam Fuchs          <afuchs@cs.umd.edu>
 *  Avik Chaudhuri      <avik@cs.umd.edu>
 *  Steve Suh           <suhsteve@gmail.com>
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * 3. The names of the contributors may not be used to endorse or promote
 * products derived from this software without specific prior written
 * permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 *
 */

package com.ibm.wala.dalvik.dex.instructions;

import org.jf.dexlib.Code.Opcode;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.ibm.wala.dalvik.classLoader.DexIMethod;
import com.ibm.wala.shrikeBT.IInvokeInstruction;
import com.ibm.wala.shrikeBT.IInvokeInstruction.IDispatch;

public abstract class Invoke extends Instruction {
	private static final Logger logger = LoggerFactory.getLogger(Invoke.class);

    public final int [] args;
    public final String clazzName;
    public final String methodName;
    public final String descriptor;

    protected Invoke(int instLoc, String clazzName, String methodName, String descriptor, int [] args, Opcode opcode, DexIMethod method)
    {
        super(instLoc, opcode, method);
        this.clazzName = clazzName;
        this.methodName = methodName;
        this.descriptor = descriptor;
        this.args = args;
    }

    public static class InvokeVirtual extends Invoke
    {

        public InvokeVirtual(int instLoc,
                String clazzName, String methodName, String descriptor,
                int[] args, Opcode opcode, DexIMethod method) {
            super(instLoc, clazzName, methodName, descriptor, args, opcode, method);
            logger.debug("constructing "+toString());
        }
        @Override
        public IDispatch getInvocationCode() {
            return IInvokeInstruction.Dispatch.VIRTUAL;
        }

        @Override
        public String toString()
        {
            StringBuilder argString = new StringBuilder();
            argString.append("(");
            String sep = "";
            for(int r:args)
            {
                argString.append(sep+r);
                sep=",";
            }
            argString.append(")");
            return "InvokeVirtual "+clazzName+" "+methodName+" "+descriptor+" "+argString.toString()+" "+pc;
        }

    }
    public static class InvokeSuper extends Invoke
    {
        public InvokeSuper(int instLoc,
                String clazzName, String methodName, String descriptor,
                int[] args, Opcode opcode, DexIMethod method) {
            super(instLoc, clazzName, methodName, descriptor, args, opcode, method);
            logger.debug("constructing "+toString());

        }
        @Override
        public IDispatch getInvocationCode() {
            // TODO: check that this is correct -- I suspect the invoke super in dex is for method protection rather than dispatching
            return IInvokeInstruction.Dispatch.SPECIAL;
        }

        @Override
        public String toString()
        {
            StringBuilder argString = new StringBuilder();
            argString.append("(");
            String sep = "";
            for(int r:args)
            {
                argString.append(sep+r);
                sep=",";
            }
            argString.append(")");
            return "InvokeSuper "+clazzName+" "+methodName+" "+descriptor+" "+argString.toString()+" "+pc;
        }

    }
    public static class InvokeDirect extends Invoke
    {

        public InvokeDirect(int instLoc,
                String clazzName, String methodName, String descriptor,
                int[] args, Opcode opcode, DexIMethod method) {
            super(instLoc, clazzName, methodName, descriptor, args, opcode, method);
            logger.debug(toString());
        }
        @Override
        public IDispatch getInvocationCode() {
            return IInvokeInstruction.Dispatch.SPECIAL;
        }

        @Override
        public String toString()
        {
            StringBuilder argString = new StringBuilder();
            argString.append("(");
            String sep = "";
            for(int r:args)
            {
                argString.append(sep+r);
                sep=",";
            }
            argString.append(")");
            return "InvokeDirect "+clazzName+" "+methodName+" "+descriptor+" "+argString.toString()+" "+pc;
        }


    }
    public static class InvokeStatic extends Invoke
    {

        public InvokeStatic(int instLoc,
                String clazzName, String methodName, String descriptor,
                int[] args, Opcode opcode, DexIMethod method) {
            super(instLoc, clazzName, methodName, descriptor, args, opcode, method);
            logger.debug("constructing "+toString());
        }
        @Override
        public IDispatch getInvocationCode() {
            return IInvokeInstruction.Dispatch.STATIC;
        }

        @Override
        public String toString()
        {
            StringBuilder argString = new StringBuilder();
            argString.append("(");
            String sep = "";
            for(int r:args)
            {
                argString.append(sep+r);
                sep=",";
            }
            argString.append(")");
            return "InvokeStatic "+clazzName+" "+methodName+" "+descriptor+" "+argString.toString()+" "+pc;
        }

    }
    public static class InvokeInterface extends Invoke
    {

        public InvokeInterface(int instLoc,
                String clazzName, String methodName, String descriptor,
                int[] args, Opcode opcode, DexIMethod method) {
            super(instLoc, clazzName, methodName, descriptor, args, opcode, method);
            logger.debug("constructing "+toString());
        }

        @Override
        public IDispatch getInvocationCode() {
            return IInvokeInstruction.Dispatch.INTERFACE;
        }
        @Override
        public String toString()
        {
            StringBuilder argString = new StringBuilder();
            argString.append("(");
            String sep = "";
            for(int r:args)
            {
                argString.append(sep+r);
                sep=",";
            }
            argString.append(")");
            return "InvokeInterface "+clazzName+" "+methodName+" "+descriptor+" "+argString.toString()+" "+pc;
        }

    }

    @Override
    public void visit(Visitor visitor)
    {
        visitor.visitInvoke(this);
    }

    public abstract IDispatch getInvocationCode();

}
