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Provides runtime and analysis for behavioral programs written in JavaScript. It can run stand-alone (from the commmandline) or be embedded in larger JVM-based systems.

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/*
 * The MIT License
 *
 * Copyright 2017 BPjs group BGU.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package il.ac.bgu.cs.bp.bpjs.analysis;

/**
 * Convenience class for creating requirement b-threads for verification.
 * 
 * @author michael
 */
public class Requirements {
   
    /**
     * Creates a b-thread that causes a false assertion when an event with a
     * given name is selected.
     * 
     * Sample usage, adding a requirement that a {@code BEvent("crash")} is
     * never selected: 
     * 
     * 
     * BProgram bprog = ...
     * bprog.appendSource( Requirements.eventNotSelected("crash") );
     * 
     * 
     * 
     * @param eventName The name of the selected event.
     * @return Source code for the b-thread.
     */
    public static final String eventNotSelected( String eventName ) {
        return "bp.registerBThread('eventNotSelected-" + eventName + "', function(){ "
            + "\n bp.sync({waitFor:bp.Event('" + eventName + "')});"
            + "\n bp.ASSERT(false, 'event \"" + eventName + "\" selected.');"
            + "\n });";
    }

    // prevent instantiation.
    private Requirements(){}
    
}