/Users/paul/Documents/phlogo/core/LogicalVerbs.cpp

/*
 *  PredicateVerbs.cpp
 *
 *  Author: Paul Hamilton
 *      Date: 17 Aug 2011
 *
 */

#include "Verbs.h"

#include "Thing.h"
#include "TokenStream.h"

#include <boost/algorithm/string/predicate.hpp>
#include <boost/lexical_cast.hpp>

using namespace std;
using namespace boost::algorithm;
using namespace boost;

namespace phlogo {

void Verbs::And(TokenStream *ts) {
    
    string a = getWord(ts);
    bool result = true;
    if (a == "FALSE") {
        result = false;
        getThing(ts);
    }
    else {
        if (ts->withinSubExpression()) {
            while (result && ts->hasMoreSubExpression()) {
                string b = getWord(ts);
                if (b == "FALSE") {
                    result = false;
                }
            }
        }
        else {
            string b = getWord(ts);
            if (b == "FALSE") {
                result = false;
            }
        }
    }
    setBooleanResult(result);
}

void Verbs::Or(TokenStream *ts) {
    
    string a = getWord(ts);
    bool result = false;
    if (a == "TRUE") {
        result = true;
        getThing(ts);
    }
    else {
        if (ts->withinSubExpression()) {
            while (!result && ts->hasMoreSubExpression()) {
                string b = getWord(ts);
                if (b == "TRUE") {
                    result = true;
                }
            }
        }
        else {
            string b = getWord(ts);
            if (b == "TRUE") {
                result = true;
            }
        }
    }
    setBooleanResult(result);
    
}

void Verbs::Not(TokenStream *ts) {
    
    setBooleanResult(getWord(ts) == "FALSE");
    
}

}