Method emitCommentsBeforeToken

internal/printer/printer.go:5305–5335

(token ast.Kind, pos int, contextNode *ast.Node, flags tokenEmitFlags)

}

func (p *Printer) emitCommentsBeforeToken(token ast.Kind, pos int, contextNode *ast.Node, flags tokenEmitFlags) (*commentState, int) {
	if flags&tefNoComments != 0 || p.commentsDisabled {
		// Still skip trivia so that the returned pos correctly identifies the token position.
		// This is needed for trailing source map positions (writeTokenText advances pos by token length).
		if p.currentSourceFile != nil && !ast.PositionIsSynthesized(pos) {
			pos = scanner.SkipTrivia(p.currentSourceFile.Text(), pos)
		}
		return nil, pos
	}

	startPos := pos
	if p.currentSourceFile != nil {
		pos = scanner.SkipTrivia(p.currentSourceFile.Text(), startPos)
	}

	node := p.emitContext.ParseNode(contextNode)
	isSimilarNode := node != nil && node.Kind == contextNode.Kind
	if !isSimilarNode {
		return nil, pos
	}

	if contextNode.Pos() != startPos {
		indentLeading := flags&tefIndentLeadingComments != 0
		needsIndent := indentLeading && p.currentSourceFile != nil && !PositionsAreOnSameLine(startPos, pos, p.currentSourceFile)
		p.increaseIndentIf(needsIndent)
		p.emitLeadingComments(startPos, false /*elided*/)
		p.decreaseIndentIf(needsIndent)
	}

	return p.commentStateArena.New(), pos
}

func (p *Printer) emitCommentsAfterToken(token ast.Kind, pos int, contextNode *ast.Node, state *commentState) {
	if state == nil {