Method Parse

tools/enum_parser/parse_enum/parse_enum.cpp:415–453

}

void TEnumParser::Parse(const char* dataIn, size_t lengthIn) {
    TMemoryInput mi(dataIn, lengthIn);

    TString line;
    TString result;

    while (mi.ReadLine(line)) {
        if (line.find("if (GetOwningArena() == other->GetOwningArena()) {") == TString::npos) {
            result += line;
            result += "\n";
        }
    }

    const char* data = result.c_str();
    size_t length = result.length();

    const TStringBuf span(data, length);
    const bool hasPragmaOnce = span.Contains("#pragma once");
    const bool isProtobufHeader = span.Contains("// Generated by the protocol buffer compiler");
    const bool isFlatbuffersHeader = span.Contains("// automatically generated by the FlatBuffers compiler");
    Y_ENSURE(
        hasPragmaOnce || isProtobufHeader || isFlatbuffersHeader,
        "Serialization functions can be generated only for enums in header files. "
        "A valid header should either contain `#pragma once` or be an protobuf/flatbuf autogenerated header file. "
        "See SEARCH-975 for more information. "
    );
    TCppContext cppContext(data, SourceFileName);
    TMemoryInput in(data, length);
    TCppSaxParser parser(&cppContext);
    TransferData(&in, &parser);
    parser.Finish();
    // obtain result
    Enums = cppContext.Enums;
    if (cppContext.Scope) {
        cppContext.PrintEnums();
        cppContext.PrintScope();
        ythrow yexception() << "Unbalanced scope, something is wrong with enum parser. ";
    }
}