switch ( peek() ){
    case '{':{
        ADVANCE_AND_ACCEPT(TokenID::OpLBrace);
    }break;
    case '}': {
        ADVANCE_AND_ACCEPT(TokenID::OpRBrace);
    }break;
    case '(': {
        ADVANCE_AND_ACCEPT(TokenID::OpLParen);
    }break;
    case ')': {
        ADVANCE_AND_ACCEPT(TokenID::OpRParen);
    }break;
    case '[': {
        ADVANCE_AND_ACCEPT(TokenID::OpLBracket);
    }break;
    case ']': {
        ADVANCE_AND_ACCEPT(TokenID::OpRBracket);
    }break;
    case '.': {
        ADVANCE_AND_ACCEPT(TokenID::OpDot);
    }break;
    case ',': {
        ADVANCE_AND_ACCEPT(TokenID::OpComma);
    }break;
    case ':': {
        ADVANCE_AND_ACCEPT(TokenID::OpColon);
    }break;
    case '+':{
        ADVANCE_AND_ACCEPT(TokenID::OpPlus);
    }break;
    case '/': {
        advance();
        switch (peek()) {
        case '/': {
            advance();
            scanLineComment();
            return;
        }break;
        default: {
            ACCEPT(TokenID::OpDiv);
        }break;
        }
    }break;
    case '*': {
        ADVANCE_AND_ACCEPT(TokenID::OpMult);
    }break;
    case '&': {
        ADVANCE_AND_ACCEPT(TokenID::OpAmpersand);
    }break;
    case ';': {
        ADVANCE_AND_ACCEPT(TokenID::OpSemicolon);
    }break;
    case '?': {
        ADVANCE_AND_ACCEPT(TokenID::OpQuestion);
    }break;
    case '=': {
        advance();
        switch (peek()) {
        case '=': {
            ADVANCE_AND_ACCEPT(TokenID::OpEQ);
        }break;
        default: {
            ACCEPT(TokenID::OpAssign);
        }break;
        }
    }break;
    case '<': {
        advance();
        switch (peek()) {
        case '=': {
            ADVANCE_AND_ACCEPT(TokenID::OpLE);
        }break;
        case '>': {
            ADVANCE_AND_ACCEPT(TokenID::OpNEQ);
        }break;
        default: {
            ACCEPT(TokenID::OpLT);
        }break;
        }
    }break;
    case '>': {
        advance();
        switch (peek()) {
        case '=': {
            ADVANCE_AND_ACCEPT(TokenID::OpGE);
        }break;
        default: {
            ACCEPT(TokenID::OpGT);
        }break;
        }
    }break;
    case '-': {
        advance();
        switch ( peek() ){
        case '>':{
            ADVANCE_AND_ACCEPT(TokenID::OpArrow);
        }break;
        default:{
            ACCEPT(TokenID::OpMinus);
        }break;
        }
    }break;
    default:{
        report(LexerError::Code::UnexpectedCharacter);
        advance();
        scanBadCharacters();
    }break;
    }