comment, endline = p.consumeCommentGroup()
			if p.file.Line(p.pos) != endline {
				// The next token is on a different line, thus
				// the last comment group is a line comment.
				p.lineComment = comment
			}
		}

		// consume successor comments, if any
		endline = -1
		for p.tok == token.COMMENT {
			comment, endline = p.consumeCommentGroup()
		}

// comments list, and return it together with the line at which
// the last comment in the group ends. A non-comment token or n
// empty lines terminate a comment group.
func (p *parser) consumeCommentGroup(n int) (comments *ast.CommentGroup, endline int) {
	var list []*ast.Comment
	endline = p.file.Line(p.pos)
	for p.tok == token.COMMENT && p.file.Line(p.pos) <= endline+n {
		var comment *ast.Comment