Function parse_code 

pub fn parse_code(
    src_lines: &Vec<String>,
    doctree: DocTree,
    line_cursor: &mut LineCursor,
    base_indent: usize,
    empty_after_marker: bool,
    body_indent: usize,
    first_indent: Option<usize>,
    section_level: usize,
) -> TransitionResult

The “code” directive parser.