parser.cpp

浙江大学 RoboCup3D 2006 源代码

/***************************************************************************
 *   Copyright (C) 2004 - 2006 by ZJUBase                                  *
 *                                National Lab of Industrial Control Tech. *
 *                                Zhejiang University, China               *

*                                                                         *
 *   Team members:                                                         *
 *    Currently the team leader is,                                        *
 *           Hao JIANG ([e-mail]; [e-mail])       *
 *    In the next season, the leader will be                               *
 *           Yifeng ZHANG ([e-mail])                        *
 *    ZJUBase 3D agent is created by                                       *
 *           Dijun LUO ([e-mail])                             *
 *    All the members who has ever contributed:                            *
 *           Jun JIANG                                                     *
 *           Xinfeng DU ([e-mail])                             *
 *           Yang ZHOU ([e-mail])                             *
 *           Zhipeng YANG                                                  *
 *           Xiang FAN                                                     *
 *                                                                         *
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 *      Ms. Rong XIONG ([e-mail])                            *
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 ***************************************************************************/

#include "parser.h"

bool Parser::Parse(const string& line, Predicate& pred)
{
    pred.clear();
    int head, tail, i;
    string line2 = line;
    for (head = 0; head < line2.size() && line2[head] == ' '; ++ head);
    for (tail = line2.size(); tail >= 0 && line2[tail] == ' '; -- tail);
    for (i = head + 1; i < tail && line2[i] != ' '; ++ i);
    pred.name = line2.substr(head + 1, i - head - 1);
    for (int k = 0, j = i; j < tail; ++ j) {
        if (line2[j] == '(') {
            line2[j] = ' ';
            ++ k;
        } else if (line2[j] == ')') {
            line2[j] = ' ';
            if (-- k == 0) {
                istringstream is(line2.substr(i, j - i));
                string name, tt;
                vector <string> value;
                is >> name;
                while (is >> tt) {
                    value.push_back(tt);
                }
                pred.insert(Predicate::value_type(name, value));
                i = j;
            }
        }
    }

    return true;
}