/data/refman/pasoursint/CMSSW_5_3_4/src/CommonTools/Utils/src/expressionParser.cc

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#include "CommonTools/Utils/src/Grammar.h"
#include "FWCore/Utilities/interface/EDMException.h"
#include "CommonTools/Utils/interface/expressionParser.h"

using namespace reco::parser;

bool reco::parser::expressionParser(const Reflex::Type &t, const std::string & value, ExpressionPtr & expr, bool lazy) {
    using namespace boost::spirit::classic;
    Grammar grammar(expr, t, lazy);
    bool returnValue = false;
    const char* startingFrom = value.c_str();
    try {
        returnValue=parse(startingFrom, grammar.use_parser<1>() >> end_p, space_p).full;
    } catch(BaseException&e){
        throw edm::Exception(edm::errors::Configuration)<<"Expression parser error:"<<baseExceptionWhat(e)<<" (char "<<e.where-startingFrom<<")\n";
    }
    return returnValue;
}