Function getSmartSelectionRange

internal/ls/selectionranges.go:31–211

(l *LanguageService, sourceFile *ast.SourceFile, pos int)

}

func getSmartSelectionRange(l *LanguageService, sourceFile *ast.SourceFile, pos int) *lsproto.SelectionRange {
	factory := &ast.NodeFactory{}

	nodeContainsPosition := func(node *ast.Node) bool {
		if node == nil {
			return false
		}
		start := scanner.GetTokenPosOfNode(node, sourceFile, true /*includeJSDoc*/)
		end := node.End()
		return start <= pos && pos < end
	}

	pushSelectionRange := func(current *lsproto.SelectionRange, start, end int) *lsproto.SelectionRange {
		if start == end {
			return current
		}

		if !(start <= pos && pos <= end) {
			return current
		}

		lspRange := l.converters.ToLSPRange(sourceFile, core.NewTextRange(start, end))

		if current != nil && current.Range == lspRange {
			return current
		}

		return &lsproto.SelectionRange{
			Range:  lspRange,
			Parent: current,
		}
	}

	pushSelectionCommentRange := func(current *lsproto.SelectionRange, start, end int) *lsproto.SelectionRange {
		current = pushSelectionRange(current, start, end)

		commentPos := start
		text := sourceFile.Text()
		for commentPos < end && commentPos < len(text) && text[commentPos] == '/' {
			commentPos++
		}
		current = pushSelectionRange(current, commentPos, end)

		return current
	}

	positionsAreOnSameLine := func(pos1, pos2 int) bool {
		if pos1 == pos2 {
			return true
		}
		lspPos1 := l.converters.PositionToLineAndCharacter(sourceFile, core.TextPos(pos1))
		lspPos2 := l.converters.PositionToLineAndCharacter(sourceFile, core.TextPos(pos2))
		return lspPos1.Line == lspPos2.Line
	}

	shouldSkipNode := func(node *ast.Node, parent *ast.Node) bool {
		if ast.IsBlock(node) {
			return true