/*
 * Copyright 2009- ECMWF.
 *
 * This software is licensed under the terms of the Apache Licence version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
 * In applying this licence, ECMWF does not waive the privileges and immunities
 * granted to it by virtue of its status as an intergovernmental organisation
 * nor does it submit to any jurisdiction.
 */

#include "ecflow/node/parser/ExternParser.hpp"

#include <stdexcept>

#include "ecflow/node/Defs.hpp"

using namespace std;

bool ExternParser::doParse(const std::string& line, std::vector<std::string>& lineTokens) {
    // cout << "line = " << line << "\n";
    if (lineTokens.size() < 2) {
        throw std::runtime_error("ExternParser::doParse Invalid extern " + line);
    }

    // Guard against
    // extern   # empty extern with a comment
    // extern   #empty extern with a comment
    if (lineTokens[1][0] == '#') {
        throw std::runtime_error("ExternParser::doParse Invalid extern paths." + line);
    }

    // Expecting:
    //   extern <path>
    //   extern <path>:<attr>
    // where attr is the name of [ event, meter, repeat, variable, generated variable ]
    //
    // We will not split it up:

    // cout << "add extern  = '" << lineTokens[1] << "'\n";
    defsfile()->add_extern(lineTokens[1]);

    return true;
}
