/*
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html.
 * 
 * This file is a derivative of code released under the terms listed below.  
 *
 */
/*
 *
 * Copyright (c) 2009-2012,
 *
 *  Galois, Inc. (Aaron Tomb <atomb@galois.com>)
 *  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 org.scandroid.spec;

import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;

import org.scandroid.flow.types.FlowType;
import org.scandroid.flow.types.ParameterFlow;

import com.ibm.wala.ipa.cfg.BasicBlockInContext;
import com.ibm.wala.ssa.ISSABasicBlock;

public class EntryArgSinkSpec extends SinkSpec {

	/**
	 * @param name
	 *            of the method
	 * @param args
	 *            to be tainted. These are zero-based; zero refers to `this` for
	 *            a non-static method, or the first parameter of a static method
	 */
	public EntryArgSinkSpec(MethodNamePattern name, int[] args) {
		namePattern = name;
		argNums = args;
	}

	public <E extends ISSABasicBlock> Collection<FlowType<E>> getFlowType(
			BasicBlockInContext<E> block) {

		HashSet<FlowType<E>> flowSet = new HashSet<FlowType<E>>();
		flowSet.clear();
		for (int i : argNums) {
			flowSet.add(new ParameterFlow<E>(block, i, false));
		}
		return flowSet;
	}

	@Override
	public String toString() {
		return String.format("EntryArgSinkSpec(%s,%s)",
				namePattern.getDescriptor(), Arrays.toString(argNums));
	}
}