func (p *printer) commentBefore(next token.Position) bool {
	return p.commentOffset < next.Offset && (!p.impliedSemi || !p.commentNewline)
}

// commentSizeBefore returns the estimated size of the
// comments on the same line before the next position.
func (p *printer) commentSizeBefore(next token.Position) int {
	// save/restore current p.commentInfo (p.nextComment() modifies it)
	defer func(info commentInfo) {
		p.commentInfo = info

		return maxSize + 1
	}
	if len(b.List) > 5 {
		// too many statements - don't make it a one-liner
		return maxSize + 1
	}
	// otherwise, estimate body size
	bodySize := p.commentSizeBefore(p.posFor(pos2))
	for i, s := range b.List {
		if bodySize > maxSize {
			break // no need to continue
		}
		if i > 0 {
			bodySize += 2 // space for a semicolon and blank
		}