Method visitExplist

src/FormatVisitor.cpp:878–1006

exp (COMMA exp)*;

// exp (COMMA exp)*;
antlrcpp::Any FormatVisitor::visitExplist(LuaParser::ExplistContext* ctx) {
    LOG_FUNCTION_BEGIN();
    int n = ctx->COMMA().size();
    auto p = calcASTLengthAndLines(ctx->exp().front(), [=]() { visitExp(ctx->exp().front()); });
    int expLength = p.first;
    int lines = p.second;
    if (n > 0) {
        expLength++;  // calc a ',' if exp > 1
    }
    bool beyondLimit = cur_columns() + expLength > config_.get<int>("column_limit");
    // if lines > 1 and current column is already too long, then break
    // example:
    // var:foo(xxxx .. xxxx) -- no break
    // longlonglonglongvar:foo(
    //     xxxx .. xxxx) --  break
    int column_limit = config_.get<int>("column_limit");
    if (lines > 1 && cur_columns() > column_limit / 2 && expLength >= column_limit / 4) {
        beyondLimit = true;
    }
    if (!functioncallLpHasBreak_.empty() && functioncallLpHasBreak_.back()) {
        beyondLimit = false;
    }
    bool hasIncIndent = false;
    int firstArgsIndent = 0;
    if (beyondLimit) {
        if (cur_writer().isLastCharWhiteSpace()) {
            cur_writer().ss().seekp(-1, std::ios::end);
        }
        cur_writer() << "\n";
        incContinuationIndent();
        cur_writer() << indentWithAlign();
        hasIncIndent = true;
        visitExp(ctx->exp().front());
    } else {
        firstArgsIndent = cur_columns() - indent_ - indentForAlign_;
        incIndentForAlign(firstArgsIndent);
        visitExp(ctx->exp().front());
        decIndentForAlign(firstArgsIndent);
    }
    if (n > 0) {
        cur_writer() << commentAfter(ctx->exp().front(), "");
    }
    for (int i = 0; i < n; i++) {
        cur_writer() << ctx->COMMA()[i]->getText();
        bool beyondLimit = false;
        pushWriter();
        cur_writer() << commentAfter(ctx->COMMA()[i], " ");
        visitExp(ctx->exp()[i + 1]);
        int expLength = cur_writer().firstLineColumn();
        int lines = cur_writer().lines();
        popWriter();
        if (i != n - 1) {
            expLength++;  // calc a ',' if exp > 1
        }
        beyondLimit = cur_columns() + expLength > config_.get<int>("column_limit");
        if (beyondLimit && lines == 1) {
            // lines is 1 means expression is enough short. But with current columns,
            // it beyonds column limit, need a line break here.