evaluation.cpp

/*
 *  This file is part of uci-analyser: a UCI-based Chess Game Analyser
 *  Copyright (C) 2013-2017 David J. Barnes
 *
 *  uci-analyser is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  uci-analyser is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with uci-analyser.  If not, see <http://www.gnu.org/licenses/>.
 *
 *  David J. Barnes may be contacted as d.j.barnes@kent.ac.uk
 *  https://www.cs.kent.ac.uk/people/staff/djb/
 */

#include <iostream>
#include <sstream>

#include "evaluation.h"
#include "utils.h"

using namespace std;

/*
 * Extract the evaluation details from an "info"
 * output from the engine.
 */
void Evaluation::extractInfo(const vector<string> &tokens, const string& info) {
    int numTokens = tokens.size();
    this->cpValue = 0;
    this->lowerBound = false;
    this->upperBound = false;
    this->variation = 0;
    this->forcedMate = false;
    this->mateInMoves = 0;

    for (int t = 1; t < numTokens;) {
        string token = tokens[t];
        t++;
        if (token == "depth") {
            string value = tokens[t];
            t++;
            this->depth = strToInt(value);
        } else if (token == "seldepth") {
            string depth = tokens[t];
            t++;
        } else if (token == "score") {
            string scoreType = tokens[t];
            t++;
            if (scoreType == "cp") {
                string value = tokens[t];
                t++;
                cpValue = strToInt(value);
            } else if (scoreType == "mate") {
                string moves = tokens[t];
                t++;

                forcedMate = true;
                mateInMoves = strToInt(moves);
            }
            string nextToken = tokens[t];
            if (nextToken == "lowerbound") {
                lowerBound = true;
                t++;
            } else if (nextToken == "upperbound") {
                upperBound = true;
                t++;
            }
        } else if (token == "multipv") {
            string multipv = tokens[t];
            t++;
            this->variation = strToInt(multipv);
        } else if (token == "nodes") {
            this->nodes = strToInt(tokens[t]);
            t++;
        } else if (token == "nps") {
            string nps = tokens[t];
            t++;
        } else if (token == "pv") {
            // Remaining tokens are the moves of the line.
            for (; t < numTokens; t++) {
                this->moves.push_back(tokens[t]);
            }
        } else if (token == "time") {
            this->time = tokens[t];
            t++;
        } else {
#ifdef DEBUG
            cout << "# Unrecognised token " << token << " in: " << endl;
            cout << "# " << info << endl;
#endif
        }
    }
}