gotools/gopls/internal/golang/folding_range.go

type FoldingRangeInfo …

// FoldingRange gets all of the folding range for f.
func FoldingRange(ctx context.Context, snapshot *cache.Snapshot, fh file.Handle, lineFoldingOnly bool) (ranges []*FoldingRangeInfo, err error) { … }

// foldingRangeFunc calculates the line folding range for ast.Node n
func foldingRangeFunc(pgf *parsego.File, n ast.Node, lineFoldingOnly bool) *FoldingRangeInfo { … }

// validLineFoldingRange returns start and end token.Pos for folding range if the range is valid.
// returns token.NoPos otherwise, which fails token.IsValid check
func validLineFoldingRange(tokFile *token.File, open, close, start, end token.Pos, lineFoldingOnly bool) (token.Pos, token.Pos) { … }

// commentsFoldingRange returns the folding ranges for all comment blocks in file.
// The folding range starts at the end of the first line of the comment block, and ends at the end of the
// comment block and has kind protocol.Comment.
func commentsFoldingRange(pgf *parsego.File) (comments []*FoldingRangeInfo) { … }