Method Query

CodeFormatCore/src/Format/Analyzer/LineBreakAnalyzer.cpp:191–235

}

void LineBreakAnalyzer::Query(FormatState &f, LuaSyntaxNode syntaxNode, const LuaSyntaxTree &t, FormatResolve &resolve) {
    auto it = _lineBreaks.find(syntaxNode.GetIndex());
    bool collapse = false;
    if (it != _lineBreaks.end()) {
        collapse = it->second.Strategy == LineBreakStrategy::NotBreak;
    }
    if (syntaxNode.IsToken(t) && !collapse) {
        if (resolve.GetNextSpaceStrategy() == NextSpaceStrategy::None || resolve.GetNextSpaceStrategy() == NextSpaceStrategy::Space) {
            auto nextToken = syntaxNode.GetNextToken(t);
            if (nextToken.IsToken(t)) {
                auto currentLine = syntaxNode.GetEndLine(t);
                auto nextLine = nextToken.GetStartLine(t);
                // 既然已经打断那就算了
                if (nextLine > currentLine) {
                    resolve.SetNextLineBreak(LineSpace(nextLine - currentLine));
                }
            }
        }
    }

    // force break
    if (it != _lineBreaks.end()) {
        auto &lineBreakData = it->second;
        switch (lineBreakData.Strategy) {
            case LineBreakStrategy::Standard: {
                resolve.SetNextLineBreak(lineBreakData.Data.Line);
                break;
            }
            case LineBreakStrategy::WhenMayExceed: {
                auto lineWidth = f.CurrentWidth();
                auto &style = f.GetStyle();
                auto relationNode = LuaSyntaxNode(lineBreakData.Data.Index);
                auto guessLineWidth = lineWidth + syntaxNode.GetFirstLineWidth(t) + relationNode.GetFirstLineWidth(t);
                if (guessLineWidth > style.max_line_length) {
                    f.Notify(FormatEvent::NodeExceedLinebreak, syntaxNode, t);
                    resolve.SetNextLineBreak(LineSpace(1, LineBreakReason::ExceedMaxLine));
                }
                break;
            }
            default: {
                break;
            }
        }
    }
}

void LineBreakAnalyzer::BreakAfter(LuaSyntaxNode n, const LuaSyntaxTree &t, std::size_t line) {
    auto token = n.GetLastToken(t);