From 9cb9e37c33173c16cbafd345f43e43b5a550537d Mon Sep 17 00:00:00 2001 From: Titus Wormer Date: Mon, 19 Sep 2022 17:29:59 +0200 Subject: Add structs, enums for `mdast` --- src/compiler.rs | 1924 ------------------------------------------------------- 1 file changed, 1924 deletions(-) delete mode 100644 src/compiler.rs (limited to 'src/compiler.rs') diff --git a/src/compiler.rs b/src/compiler.rs deleted file mode 100644 index eaa15ee..0000000 --- a/src/compiler.rs +++ /dev/null @@ -1,1924 +0,0 @@ -//! Turn events into a string of HTML. -use crate::event::{Event, Kind, Name}; -use crate::util::{ - constant::{SAFE_PROTOCOL_HREF, SAFE_PROTOCOL_SRC}, - decode_character_reference::{decode_named, decode_numeric}, - encode::encode, - gfm_tagfilter::gfm_tagfilter, - normalize_identifier::normalize_identifier, - sanitize_uri::{sanitize, sanitize_with_protocols}, - skip, - slice::{Position, Slice}, -}; -use crate::{LineEnding, Options}; -use alloc::{ - format, - string::{String, ToString}, - vec, - vec::Vec, -}; -use core::str; - -/// Link, image, or footnote call. -/// Resource or reference. -/// Reused for temporary definitions as well, in the first pass. -#[derive(Debug)] -struct Media { - /// Whether this represents an image (`true`) or a link or definition - /// (`false`). - image: bool, - /// The text between the brackets (`x` in `![x]()` and `[x]()`). - /// - /// Not interpreted. - label_id: Option<(usize, usize)>, - /// The result of interpreting the text between the brackets - /// (`x` in `![x]()` and `[x]()`). - /// - /// When this is a link, it contains further text content and thus HTML - /// tags. - /// Otherwise, when an image, text content is also allowed, but resulting - /// tags are ignored. - label: Option, - /// The string between the explicit brackets of the reference (`y` in - /// `[x][y]`), as content. - /// - /// Not interpreted. - reference_id: Option<(usize, usize)>, - /// The destination (url). - /// - /// Interpreted string content. - destination: Option, - /// The destination (url). - /// - /// Interpreted string content. - title: Option, -} - -/// Representation of a definition. -#[derive(Debug)] -struct Definition { - /// Identifier. - id: String, - /// The destination (url). - /// - /// Interpreted string content. - destination: Option, - /// The title. - /// - /// Interpreted string content. - title: Option, -} - -/// GFM table: column alignment. -#[derive(Debug, PartialEq, Eq, Copy, Clone)] -enum GfmTableAlign { - /// No alignment. - /// - /// ```markdown - /// | | aaa | - /// > | | --- | - /// ^^^ - /// ``` - None, - /// Left alignment. - /// - /// ```markdown - /// | | aaa | - /// > | | :-- | - /// ^^^ - /// ``` - Left, - /// Center alignment. - /// - /// ```markdown - /// | | aaa | - /// > | | :-: | - /// ^^^ - /// ``` - Center, - /// Right alignment. - /// - /// ```markdown - /// | | aaa | - /// > | | --: | - /// ^^^ - /// ``` - Right, -} - -/// Context used to compile markdown. -#[allow(clippy::struct_excessive_bools)] -#[derive(Debug)] -struct CompileContext<'a> { - // Static info. - /// List of events. - pub events: &'a [Event], - /// List of bytes. - pub bytes: &'a [u8], - /// Configuration. - pub options: &'a Options, - // Fields used by handlers to track the things they need to track to - // compile markdown. - /// Rank of heading (atx). - pub heading_atx_rank: Option, - /// Buffer of heading (setext) text. - pub heading_setext_buffer: Option, - /// Whether raw (flow) (code (fenced), math (flow)) or code (indented) contains data. - pub raw_flow_seen_data: Option, - /// Number of raw (flow) fences. - pub raw_flow_fences_count: Option, - /// Whether we are in code (text). - pub raw_text_inside: bool, - /// Whether we are in image text. - pub image_alt_inside: bool, - /// Marker of character reference. - pub character_reference_marker: Option, - /// Whether we are expecting the first list item marker. - pub list_expect_first_marker: Option, - /// Stack of media (link, image). - pub media_stack: Vec, - /// Stack of containers. - pub tight_stack: Vec, - /// List of definitions. - pub definitions: Vec, - /// List of definitions. - pub gfm_footnote_definitions: Vec<(String, String)>, - pub gfm_footnote_definition_calls: Vec<(String, usize)>, - pub gfm_footnote_definition_stack: Vec<(usize, usize)>, - /// Whether we are in a GFM table head. - pub gfm_table_in_head: bool, - /// Current GFM table alignment. - pub gfm_table_align: Option>, - /// Current GFM table column. - pub gfm_table_column: usize, - // Fields used to influance the current compilation. - /// Ignore the next line ending. - pub slurp_one_line_ending: bool, - /// Whether to encode HTML. - pub encode_html: bool, - // Configuration - /// Line ending to use. - pub line_ending_default: LineEnding, - // Intermediate results. - /// Stack of buffers. - pub buffers: Vec, - /// Current event index. - pub index: usize, -} - -impl<'a> CompileContext<'a> { - /// Create a new compile context. - pub fn new( - events: &'a [Event], - bytes: &'a [u8], - options: &'a Options, - line_ending: LineEnding, - ) -> CompileContext<'a> { - CompileContext { - events, - bytes, - heading_atx_rank: None, - heading_setext_buffer: None, - raw_flow_seen_data: None, - raw_flow_fences_count: None, - raw_text_inside: false, - character_reference_marker: None, - list_expect_first_marker: None, - media_stack: vec![], - definitions: vec![], - gfm_footnote_definitions: vec![], - gfm_footnote_definition_calls: vec![], - gfm_footnote_definition_stack: vec![], - gfm_table_in_head: false, - gfm_table_align: None, - gfm_table_column: 0, - tight_stack: vec![], - slurp_one_line_ending: false, - image_alt_inside: false, - encode_html: true, - line_ending_default: line_ending, - buffers: vec![String::new()], - index: 0, - options, - } - } - - /// Push a buffer. - pub fn buffer(&mut self) { - self.buffers.push(String::new()); - } - - /// Pop a buffer, returning its value. - pub fn resume(&mut self) -> String { - self.buffers.pop().expect("Cannot resume w/o buffer") - } - - /// Push a str to the last buffer. - pub fn push(&mut self, value: &str) { - self.buffers - .last_mut() - .expect("Cannot push w/o buffer") - .push_str(value); - } - - /// Add a line ending. - pub fn line_ending(&mut self) { - let eol = self.line_ending_default.as_str().to_string(); - self.push(&eol); - } - - /// Add a line ending if needed (as in, there’s no eol/eof already). - pub fn line_ending_if_needed(&mut self) { - let tail = self - .buffers - .last() - .expect("at least one buffer should exist") - .as_bytes() - .last(); - - if !matches!(tail, None | Some(b'\n' | b'\r')) { - self.line_ending(); - } - } -} - -/// Turn events and codes into a string of HTML. -pub fn compile(events: &[Event], bytes: &[u8], options: &Options) -> String { - let mut index = 0; - let mut line_ending_inferred = None; - - // First, we figure out what the used line ending style is. - // Stop when we find a line ending. - while index < events.len() { - let event = &events[index]; - - if event.kind == Kind::Exit - && (event.name == Name::BlankLineEnding || event.name == Name::LineEnding) - { - line_ending_inferred = Some(LineEnding::from_str( - Slice::from_position(bytes, &Position::from_exit_event(events, index)).as_str(), - )); - break; - } - - index += 1; - } - - // Figure out which line ending style we’ll use. - let line_ending_default = if let Some(value) = line_ending_inferred { - value - } else { - options.default_line_ending.clone() - }; - - let mut context = CompileContext::new(events, bytes, options, line_ending_default); - let mut definition_indices = vec![]; - let mut index = 0; - let mut definition_inside = false; - - // Handle all definitions first. - // We must do two passes because we need to compile the events in - // definitions which come after references already. - // - // To speed things up, we collect the places we can jump over for the - // second pass. - // - // We don’t need to handle GFM footnote definitions like this, because - // unlike normal definitions, what they produce is not used in calls. - // It would also get very complex, because footnote definitions can be - // nested. - while index < events.len() { - let event = &events[index]; - - if definition_inside { - handle(&mut context, index); - } - - if event.kind == Kind::Enter { - if event.name == Name::Definition { - handle(&mut context, index); // Also handle start. - definition_inside = true; - definition_indices.push((index, index)); - } - } else if event.name == Name::Definition { - definition_inside = false; - definition_indices.last_mut().unwrap().1 = index; - } - - index += 1; - } - - index = 0; - let jump_default = (events.len(), events.len()); - let mut definition_index = 0; - let mut jump = definition_indices - .get(definition_index) - .unwrap_or(&jump_default); - - while index < events.len() { - if index == jump.0 { - index = jump.1 + 1; - definition_index += 1; - jump = definition_indices - .get(definition_index) - .unwrap_or(&jump_default); - } else { - handle(&mut context, index); - index += 1; - } - } - - // No section to generate. - if !context.gfm_footnote_definition_calls.is_empty() { - generate_footnote_section(&mut context); - } - - debug_assert_eq!(context.buffers.len(), 1, "expected 1 final buffer"); - context - .buffers - .get(0) - .expect("expected 1 final buffer") - .to_string() -} - -/// Handle the event at `index`. -fn handle(context: &mut CompileContext, index: usize) { - context.index = index; - - if context.events[index].kind == Kind::Enter { - enter(context); - } else { - exit(context); - } -} - -/// Handle [`Enter`][Kind::Enter]. -fn enter(context: &mut CompileContext) { - match context.events[context.index].name { - Name::CodeFencedFenceInfo - | Name::CodeFencedFenceMeta - | Name::MathFlowFenceMeta - | Name::DefinitionLabelString - | Name::DefinitionTitleString - | Name::GfmFootnoteDefinitionPrefix - | Name::HeadingAtxText - | Name::HeadingSetextText - | Name::Label - | Name::MdxEsm - | Name::MdxFlowExpression - | Name::MdxTextExpression - | Name::MdxJsxFlowTag - | Name::MdxJsxTextTag - | Name::ReferenceString - | Name::ResourceTitleString => on_enter_buffer(context), - - Name::BlockQuote => on_enter_block_quote(context), - Name::CodeIndented => on_enter_code_indented(context), - Name::CodeFenced | Name::MathFlow => on_enter_raw_flow(context), - Name::CodeText | Name::MathText => on_enter_raw_text(context), - Name::Definition => on_enter_definition(context), - Name::DefinitionDestinationString => on_enter_definition_destination_string(context), - Name::Emphasis => on_enter_emphasis(context), - Name::Frontmatter => on_enter_frontmatter(context), - Name::GfmFootnoteDefinition => on_enter_gfm_footnote_definition(context), - Name::GfmFootnoteCall => on_enter_gfm_footnote_call(context), - Name::GfmStrikethrough => on_enter_gfm_strikethrough(context), - Name::GfmTable => on_enter_gfm_table(context), - Name::GfmTableBody => on_enter_gfm_table_body(context), - Name::GfmTableCell => on_enter_gfm_table_cell(context), - Name::GfmTableHead => on_enter_gfm_table_head(context), - Name::GfmTableRow => on_enter_gfm_table_row(context), - Name::GfmTaskListItemCheck => on_enter_gfm_task_list_item_check(context), - Name::HtmlFlow => on_enter_html_flow(context), - Name::HtmlText => on_enter_html_text(context), - Name::Image => on_enter_image(context), - Name::Link => on_enter_link(context), - Name::ListItemMarker => on_enter_list_item_marker(context), - Name::ListOrdered | Name::ListUnordered => on_enter_list(context), - Name::Paragraph => on_enter_paragraph(context), - Name::Resource => on_enter_resource(context), - Name::ResourceDestinationString => on_enter_resource_destination_string(context), - Name::Strong => on_enter_strong(context), - _ => {} - } -} - -/// Handle [`Exit`][Kind::Exit]. -fn exit(context: &mut CompileContext) { - match context.events[context.index].name { - Name::CodeFencedFenceMeta - | Name::MathFlowFenceMeta - | Name::MdxJsxTextTag - | Name::MdxTextExpression - | Name::Resource => { - on_exit_drop(context); - } - Name::MdxEsm | Name::MdxFlowExpression | Name::MdxJsxFlowTag => on_exit_drop_slurp(context), - Name::CharacterEscapeValue | Name::CodeTextData | Name::Data | Name::MathTextData => { - on_exit_data(context); - } - Name::AutolinkEmail => on_exit_autolink_email(context), - Name::AutolinkProtocol => on_exit_autolink_protocol(context), - Name::BlankLineEnding => on_exit_blank_line_ending(context), - Name::BlockQuote => on_exit_block_quote(context), - Name::CharacterReferenceMarker => on_exit_character_reference_marker(context), - Name::CharacterReferenceMarkerNumeric => { - on_exit_character_reference_marker_numeric(context); - } - Name::CharacterReferenceMarkerHexadecimal => { - on_exit_character_reference_marker_hexadecimal(context); - } - Name::CharacterReferenceValue => on_exit_character_reference_value(context), - Name::CodeFenced | Name::CodeIndented | Name::MathFlow => on_exit_raw_flow(context), - Name::CodeFencedFence | Name::MathFlowFence => on_exit_raw_flow_fence(context), - Name::CodeFencedFenceInfo => on_exit_raw_flow_fence_info(context), - Name::CodeFlowChunk | Name::MathFlowChunk => on_exit_raw_flow_chunk(context), - Name::CodeText | Name::MathText => on_exit_raw_text(context), - Name::Definition => on_exit_definition(context), - Name::DefinitionDestinationString => on_exit_definition_destination_string(context), - Name::DefinitionLabelString => on_exit_definition_label_string(context), - Name::DefinitionTitleString => on_exit_definition_title_string(context), - Name::Emphasis => on_exit_emphasis(context), - Name::Frontmatter => on_exit_frontmatter(context), - Name::GfmAutolinkLiteralEmail => on_exit_gfm_autolink_literal_email(context), - Name::GfmAutolinkLiteralMailto => on_exit_gfm_autolink_literal_mailto(context), - Name::GfmAutolinkLiteralProtocol => on_exit_gfm_autolink_literal_protocol(context), - Name::GfmAutolinkLiteralWww => on_exit_gfm_autolink_literal_www(context), - Name::GfmAutolinkLiteralXmpp => on_exit_gfm_autolink_literal_xmpp(context), - Name::GfmFootnoteCall => on_exit_gfm_footnote_call(context), - Name::GfmFootnoteDefinitionLabelString => { - on_exit_gfm_footnote_definition_label_string(context); - } - Name::GfmFootnoteDefinitionPrefix => on_exit_gfm_footnote_definition_prefix(context), - Name::GfmFootnoteDefinition => on_exit_gfm_footnote_definition(context), - Name::GfmStrikethrough => on_exit_gfm_strikethrough(context), - Name::GfmTable => on_exit_gfm_table(context), - Name::GfmTableBody => on_exit_gfm_table_body(context), - Name::GfmTableCell => on_exit_gfm_table_cell(context), - Name::GfmTableHead => on_exit_gfm_table_head(context), - Name::GfmTableRow => on_exit_gfm_table_row(context), - Name::GfmTaskListItemCheck => on_exit_gfm_task_list_item_check(context), - Name::GfmTaskListItemValueChecked => on_exit_gfm_task_list_item_value_checked(context), - Name::HardBreakEscape | Name::HardBreakTrailing => on_exit_break(context), - Name::HeadingAtx => on_exit_heading_atx(context), - Name::HeadingAtxSequence => on_exit_heading_atx_sequence(context), - Name::HeadingAtxText => on_exit_heading_atx_text(context), - Name::HeadingSetextText => on_exit_heading_setext_text(context), - Name::HeadingSetextUnderlineSequence => on_exit_heading_setext_underline_sequence(context), - Name::HtmlFlow | Name::HtmlText => on_exit_html(context), - Name::HtmlFlowData | Name::HtmlTextData => on_exit_html_data(context), - Name::Image | Name::Link => on_exit_media(context), - Name::Label => on_exit_label(context), - Name::LabelText => on_exit_label_text(context), - Name::LineEnding => on_exit_line_ending(context), - Name::ListOrdered | Name::ListUnordered => on_exit_list(context), - Name::ListItem => on_exit_list_item(context), - Name::ListItemValue => on_exit_list_item_value(context), - Name::Paragraph => on_exit_paragraph(context), - Name::ReferenceString => on_exit_reference_string(context), - Name::ResourceDestinationString => on_exit_resource_destination_string(context), - Name::ResourceTitleString => on_exit_resource_title_string(context), - Name::Strong => on_exit_strong(context), - Name::ThematicBreak => on_exit_thematic_break(context), - _ => {} - } -} - -/// Handle [`Enter`][Kind::Enter]:`*`. -/// -/// Buffers data. -fn on_enter_buffer(context: &mut CompileContext) { - context.buffer(); -} - -/// Handle [`Enter`][Kind::Enter]:[`BlockQuote`][Name::BlockQuote]. -fn on_enter_block_quote(context: &mut CompileContext) { - context.tight_stack.push(false); - context.line_ending_if_needed(); - context.push("
"); -} - -/// Handle [`Enter`][Kind::Enter]:[`CodeIndented`][Name::CodeIndented]. -fn on_enter_code_indented(context: &mut CompileContext) { - context.raw_flow_seen_data = Some(false); - context.line_ending_if_needed(); - context.push("
");
-}
-
-/// Handle [`Enter`][Kind::Enter]:{[`CodeFenced`][Name::CodeFenced],[`MathFlow`][Name::MathFlow]}.
-fn on_enter_raw_flow(context: &mut CompileContext) {
-    context.raw_flow_seen_data = Some(false);
-    context.line_ending_if_needed();
-    // Note that no `>` is used, which is added later (due to info)
-    context.push("
");
-    }
-    context.buffer();
-}
-
-/// Handle [`Enter`][Kind::Enter]:[`Definition`][Name::Definition].
-fn on_enter_definition(context: &mut CompileContext) {
-    context.buffer();
-    context.media_stack.push(Media {
-        image: false,
-        label: None,
-        label_id: None,
-        reference_id: None,
-        destination: None,
-        title: None,
-    });
-}
-
-/// Handle [`Enter`][Kind::Enter]:[`DefinitionDestinationString`][Name::DefinitionDestinationString].
-fn on_enter_definition_destination_string(context: &mut CompileContext) {
-    context.buffer();
-    context.encode_html = false;
-}
-
-/// Handle [`Enter`][Kind::Enter]:[`Emphasis`][Name::Emphasis].
-fn on_enter_emphasis(context: &mut CompileContext) {
-    if !context.image_alt_inside {
-        context.push("");
-    }
-}
-
-/// Handle [`Enter`][Kind::Enter]:[`Frontmatter`][Name::Frontmatter].
-fn on_enter_frontmatter(context: &mut CompileContext) {
-    context.buffer();
-}
-
-/// Handle [`Enter`][Kind::Enter]:[`GfmFootnoteDefinition`][Name::GfmFootnoteDefinition].
-fn on_enter_gfm_footnote_definition(context: &mut CompileContext) {
-    context.tight_stack.push(false);
-}
-
-/// Handle [`Enter`][Kind::Enter]:[`GfmFootnoteCall`][Name::GfmFootnoteCall].
-fn on_enter_gfm_footnote_call(context: &mut CompileContext) {
-    context.media_stack.push(Media {
-        image: false,
-        label_id: None,
-        label: None,
-        reference_id: None,
-        destination: None,
-        title: None,
-    });
-}
-
-/// Handle [`Enter`][Kind::Enter]:[`GfmStrikethrough`][Name::GfmStrikethrough].
-fn on_enter_gfm_strikethrough(context: &mut CompileContext) {
-    if !context.image_alt_inside {
-        context.push("");
-    }
-}
-
-/// Handle [`Enter`][Kind::Enter]:[`GfmTable`][Name::GfmTable].
-fn on_enter_gfm_table(context: &mut CompileContext) {
-    // Find the alignment.
-    let mut index = context.index;
-    let mut in_delimiter_row = false;
-    let mut align = vec![];
-
-    while index < context.events.len() {
-        let event = &context.events[index];
-
-        if in_delimiter_row {
-            if event.kind == Kind::Enter {
-                // Start of alignment value: set a new column.
-                if event.name == Name::GfmTableDelimiterCellValue {
-                    align.push(
-                        if context.events[index + 1].name == Name::GfmTableDelimiterMarker {
-                            GfmTableAlign::Left
-                        } else {
-                            GfmTableAlign::None
-                        },
-                    );
-                }
-            } else {
-                // End of alignment value: change the column.
-                if event.name == Name::GfmTableDelimiterCellValue {
-                    if context.events[index - 1].name == Name::GfmTableDelimiterMarker {
-                        let align_index = align.len() - 1;
-                        align[align_index] = if align[align_index] == GfmTableAlign::Left {
-                            GfmTableAlign::Center
-                        } else {
-                            GfmTableAlign::Right
-                        }
-                    }
-                }
-                // Done!
-                else if event.name == Name::GfmTableDelimiterRow {
-                    break;
-                }
-            }
-        } else if event.kind == Kind::Enter && event.name == Name::GfmTableDelimiterRow {
-            in_delimiter_row = true;
-        }
-
-        index += 1;
-    }
-
-    // Generate.
-    context.gfm_table_align = Some(align);
-    context.line_ending_if_needed();
-    context.push("");
-}
-
-/// Handle [`Enter`][Kind::Enter]:[`GfmTableBody`][Name::GfmTableBody].
-fn on_enter_gfm_table_body(context: &mut CompileContext) {
-    context.push("");
-}
-
-/// Handle [`Enter`][Kind::Enter]:[`GfmTableCell`][Name::GfmTableCell].
-fn on_enter_gfm_table_cell(context: &mut CompileContext) {
-    let column = context.gfm_table_column;
-    let align = context.gfm_table_align.as_ref().unwrap();
-
-    if column >= align.len() {
-        // Capture cell to ignore it.
-        context.buffer();
-    } else {
-        let value = align[column];
-        context.line_ending_if_needed();
-
-        if context.gfm_table_in_head {
-            context.push(" context.push(" align=\"left\""),
-            GfmTableAlign::Right => context.push(" align=\"right\""),
-            GfmTableAlign::Center => context.push(" align=\"center\""),
-            GfmTableAlign::None => {}
-        }
-
-        context.push(">");
-    }
-}
-
-/// Handle [`Enter`][Kind::Enter]:[`GfmTableHead`][Name::GfmTableHead].
-fn on_enter_gfm_table_head(context: &mut CompileContext) {
-    context.line_ending_if_needed();
-    context.push("");
-    context.gfm_table_in_head = true;
-}
-
-/// Handle [`Enter`][Kind::Enter]:[`GfmTableRow`][Name::GfmTableRow].
-fn on_enter_gfm_table_row(context: &mut CompileContext) {
-    context.line_ending_if_needed();
-    context.push("");
-}
-
-/// Handle [`Enter`][Kind::Enter]:[`GfmTaskListItemCheck`][Name::GfmTaskListItemCheck].
-fn on_enter_gfm_task_list_item_check(context: &mut CompileContext) {
-    if !context.image_alt_inside {
-        context.push(" | -␊
-                //      ^
-                //   |   a
-                // ```
-                let mut at_prefix = false;
-                // Blank line directly after item, which is just a prefix.
-                //
-                // ```markdown
-                // > | -␊
-                //      ^
-                //   | - a
-                // ```
-                let mut at_empty_list_item = false;
-                // Blank line at block quote prefix:
-                //
-                // ```markdown
-                // > | * >␊
-                //        ^
-                //   | * a
-                // ```
-                let mut at_empty_block_quote = false;
-
-                if balance == 1 {
-                    let mut before = index - 2;
-
-                    if events[before].name == Name::ListItem {
-                        before -= 1;
-
-                        if events[before].name == Name::SpaceOrTab {
-                            before -= 2;
-                        }
-
-                        if events[before].name == Name::BlockQuote
-                            && events[before - 1].name == Name::BlockQuotePrefix
-                        {
-                            at_empty_block_quote = true;
-                        } else if events[before].name == Name::ListItemPrefix {
-                            at_empty_list_item = true;
-                        }
-                    }
-                } else {
-                    let mut before = index - 2;
-
-                    if events[before].name == Name::SpaceOrTab {
-                        before -= 2;
-                    }
-
-                    if events[before].name == Name::ListItemPrefix {
-                        at_prefix = true;
-                    }
-                }
-
-                if !at_prefix && !at_empty_list_item && !at_empty_block_quote {
-                    loose = true;
-                    break;
-                }
-            }
-
-            // Done.
-            if balance == 0 && event.name == *name {
-                break;
-            }
-        }
-
-        index += 1;
-    }
-
-    context.tight_stack.push(!loose);
-    context.line_ending_if_needed();
-    // Note: no `>`.
-    context.push(if *name == Name::ListOrdered {
-        "");
-    }
-
-    context.line_ending_if_needed();
-
-    context.push("
  • ");
-    context.list_expect_first_marker = Some(false);
-}
-
-/// Handle [`Enter`][Kind::Enter]:[`Paragraph`][Name::Paragraph].
-fn on_enter_paragraph(context: &mut CompileContext) {
-    let tight = context.tight_stack.last().unwrap_or(&false);
-
-    if !tight {
-        context.line_ending_if_needed();
-        context.push("
    ");
-    }
-}
-
-/// Handle [`Enter`][Kind::Enter]:[`Resource`][Name::Resource].
-fn on_enter_resource(context: &mut CompileContext) {
-    context.buffer(); // We can have line endings in the resource, ignore them.
-    context.media_stack.last_mut().unwrap().destination = Some("".to_string());
-}
-
-/// Handle [`Enter`][Kind::Enter]:[`ResourceDestinationString`][Name::ResourceDestinationString].
-fn on_enter_resource_destination_string(context: &mut CompileContext) {
-    context.buffer();
-    // Ignore encoding the result, as we’ll first percent encode the url and
-    // encode manually after.
-    context.encode_html = false;
-}
-
-/// Handle [`Enter`][Kind::Enter]:[`Strong`][Name::Strong].
-fn on_enter_strong(context: &mut CompileContext) {
-    if !context.image_alt_inside {
-        context.push("");
-    }
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`AutolinkEmail`][Name::AutolinkEmail].
-fn on_exit_autolink_email(context: &mut CompileContext) {
-    generate_autolink(
-        context,
-        Some("mailto:"),
-        Slice::from_position(
-            context.bytes,
-            &Position::from_exit_event(context.events, context.index),
-        )
-        .as_str(),
-        false,
-    );
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`AutolinkProtocol`][Name::AutolinkProtocol].
-fn on_exit_autolink_protocol(context: &mut CompileContext) {
-    generate_autolink(
-        context,
-        None,
-        Slice::from_position(
-            context.bytes,
-            &Position::from_exit_event(context.events, context.index),
-        )
-        .as_str(),
-        false,
-    );
-}
-
-/// Handle [`Exit`][Kind::Exit]:{[`HardBreakEscape`][Name::HardBreakEscape],[`HardBreakTrailing`][Name::HardBreakTrailing]}.
-fn on_exit_break(context: &mut CompileContext) {
-    if !context.image_alt_inside {
-        context.push("
    ");
-    }
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`BlankLineEnding`][Name::BlankLineEnding].
-fn on_exit_blank_line_ending(context: &mut CompileContext) {
-    if context.index == context.events.len() - 1 {
-        context.line_ending_if_needed();
-    }
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`BlockQuote`][Name::BlockQuote].
-fn on_exit_block_quote(context: &mut CompileContext) {
-    context.tight_stack.pop();
-    context.line_ending_if_needed();
-    context.slurp_one_line_ending = false;
-    context.push("");
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`CharacterReferenceMarker`][Name::CharacterReferenceMarker].
-fn on_exit_character_reference_marker(context: &mut CompileContext) {
-    context.character_reference_marker = Some(b'&');
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`CharacterReferenceMarkerHexadecimal`][Name::CharacterReferenceMarkerHexadecimal].
-fn on_exit_character_reference_marker_hexadecimal(context: &mut CompileContext) {
-    context.character_reference_marker = Some(b'x');
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`CharacterReferenceMarkerNumeric`][Name::CharacterReferenceMarkerNumeric].
-fn on_exit_character_reference_marker_numeric(context: &mut CompileContext) {
-    context.character_reference_marker = Some(b'#');
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`CharacterReferenceValue`][Name::CharacterReferenceValue].
-fn on_exit_character_reference_value(context: &mut CompileContext) {
-    let marker = context
-        .character_reference_marker
-        .take()
-        .expect("expected `character_reference_kind` to be set");
-    let slice = Slice::from_position(
-        context.bytes,
-        &Position::from_exit_event(context.events, context.index),
-    );
-    let value = slice.as_str();
-
-    let value = match marker {
-        b'#' => decode_numeric(value, 10),
-        b'x' => decode_numeric(value, 16),
-        b'&' => decode_named(value),
-        _ => panic!("impossible"),
-    };
-
-    context.push(&encode(&value, context.encode_html));
-}
-
-/// Handle [`Exit`][Kind::Exit]:{[`CodeFlowChunk`][Name::CodeFlowChunk],[`MathFlowChunk`][Name::MathFlowChunk]}.
-fn on_exit_raw_flow_chunk(context: &mut CompileContext) {
-    context.raw_flow_seen_data = Some(true);
-    context.push(&encode(
-        &Slice::from_position(
-            context.bytes,
-            &Position::from_exit_event(context.events, context.index),
-        )
-        // Must serialize to get virtual spaces.
-        .serialize(),
-        context.encode_html,
-    ));
-}
-
-/// Handle [`Exit`][Kind::Exit]:{[`CodeFencedFence`][Name::CodeFencedFence],[`MathFlowFence`][Name::MathFlowFence]}.
-fn on_exit_raw_flow_fence(context: &mut CompileContext) {
-    let count = if let Some(count) = context.raw_flow_fences_count {
-        count
-    } else {
-        0
-    };
-
-    if count == 0 {
-        context.push(">");
-        context.slurp_one_line_ending = true;
-    }
-
-    context.raw_flow_fences_count = Some(count + 1);
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`CodeFencedFenceInfo`][Name::CodeFencedFenceInfo].
-///
-/// Note: math (flow) does not support `info`.
-fn on_exit_raw_flow_fence_info(context: &mut CompileContext) {
-    let value = context.resume();
-    context.push(" class=\"language-");
-    context.push(&value);
-    context.push("\"");
-}
-
-/// Handle [`Exit`][Kind::Exit]:{[`CodeFenced`][Name::CodeFenced],[`CodeIndented`][Name::CodeIndented],[`MathFlow`][Name::MathFlow]}.
-fn on_exit_raw_flow(context: &mut CompileContext) {
-    // One special case is if we are inside a container, and the raw (flow) was
-    // not closed (meaning it runs to the end).
-    // In that case, the following line ending, is considered *outside* the
-    // fenced code and block quote by micromark, but CM wants to treat that
-    // ending as part of the code.
-    if let Some(count) = context.raw_flow_fences_count {
-        // No closing fence.
-        if count == 1
-            // In a container.
-            && !context.tight_stack.is_empty()
-            // Empty (as the closing is right at the opening fence)
-            && !matches!(context.events[context.index - 1].name, Name::CodeFencedFence | Name::MathFlowFence)
-        {
-            context.line_ending();
-        }
-    }
-
-    // But in most cases, it’s simpler: when we’ve seen some data, emit an extra
-    // line ending when needed.
-    if context
-        .raw_flow_seen_data
-        .take()
-        .expect("`raw_flow_seen_data` must be defined")
-    {
-        context.line_ending_if_needed();
-    }
-
-    context.push("");
-
-    if let Some(count) = context.raw_flow_fences_count.take() {
-        if count < 2 {
-            context.line_ending_if_needed();
-        }
-    }
-
-    context.slurp_one_line_ending = false;
-}
-
-/// Handle [`Exit`][Kind::Exit]:{[`CodeText`][Name::CodeText],[`MathText`][Name::MathText]}.
-fn on_exit_raw_text(context: &mut CompileContext) {
-    let result = context.resume();
-    let mut bytes = result.as_bytes().to_vec();
-
-    // If we are in a GFM table, we need to decode escaped pipes.
-    // This is a rather weird GFM feature.
-    if context.gfm_table_align.is_some() {
-        let mut index = 0;
-        let mut len = bytes.len();
-
-        while index < len {
-            if index + 1 < len && bytes[index] == b'\\' && bytes[index + 1] == b'|' {
-                bytes.remove(index);
-                len -= 1;
-            }
-
-            index += 1;
-        }
-    }
-
-    let mut trim = false;
-    let mut index = 0;
-    let mut end = bytes.len();
-
-    if end > 2 && bytes[index] == b' ' && bytes[end - 1] == b' ' {
-        index += 1;
-        end -= 1;
-        while index < end && !trim {
-            if bytes[index] != b' ' {
-                trim = true;
-                break;
-            }
-            index += 1;
-        }
-    }
-
-    if trim {
-        bytes.remove(0);
-        bytes.pop();
-    }
-
-    context.raw_text_inside = false;
-    context.push(str::from_utf8(&bytes).unwrap());
-
-    if !context.image_alt_inside {
-        context.push("");
-    }
-}
-
-/// Handle [`Exit`][Kind::Exit]:*.
-///
-/// Resumes, and ignores what was resumed.
-fn on_exit_drop(context: &mut CompileContext) {
-    context.resume();
-}
-
-/// Handle [`Exit`][Kind::Exit]:*.
-///
-/// Resumes, ignores what was resumed, and slurps the following line ending.
-fn on_exit_drop_slurp(context: &mut CompileContext) {
-    context.resume();
-    context.slurp_one_line_ending = true;
-}
-
-/// Handle [`Exit`][Kind::Exit]:{[`CodeTextData`][Name::CodeTextData],[`Data`][Name::Data],[`CharacterEscapeValue`][Name::CharacterEscapeValue]}.
-fn on_exit_data(context: &mut CompileContext) {
-    context.push(&encode(
-        Slice::from_position(
-            context.bytes,
-            &Position::from_exit_event(context.events, context.index),
-        )
-        .as_str(),
-        context.encode_html,
-    ));
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`Definition`][Name::Definition].
-fn on_exit_definition(context: &mut CompileContext) {
-    context.resume();
-    let media = context.media_stack.pop().unwrap();
-    let indices = media.reference_id.unwrap();
-    let id =
-        normalize_identifier(Slice::from_indices(context.bytes, indices.0, indices.1).as_str());
-
-    context.definitions.push(Definition {
-        id,
-        destination: media.destination,
-        title: media.title,
-    });
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`DefinitionDestinationString`][Name::DefinitionDestinationString].
-fn on_exit_definition_destination_string(context: &mut CompileContext) {
-    let buf = context.resume();
-    context.media_stack.last_mut().unwrap().destination = Some(buf);
-    context.encode_html = true;
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`DefinitionLabelString`][Name::DefinitionLabelString].
-fn on_exit_definition_label_string(context: &mut CompileContext) {
-    // Discard label, use the source content instead.
-    context.resume();
-    context.media_stack.last_mut().unwrap().reference_id =
-        Some(Position::from_exit_event(context.events, context.index).to_indices());
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`DefinitionTitleString`][Name::DefinitionTitleString].
-fn on_exit_definition_title_string(context: &mut CompileContext) {
-    let buf = context.resume();
-    context.media_stack.last_mut().unwrap().title = Some(buf);
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`Emphasis`][Name::Emphasis].
-fn on_exit_emphasis(context: &mut CompileContext) {
-    if !context.image_alt_inside {
-        context.push("");
-    }
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`Frontmatter`][Name::Frontmatter].
-fn on_exit_frontmatter(context: &mut CompileContext) {
-    context.resume();
-    context.slurp_one_line_ending = true;
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`GfmAutolinkLiteralEmail`][Name::GfmAutolinkLiteralEmail].
-fn on_exit_gfm_autolink_literal_email(context: &mut CompileContext) {
-    generate_autolink(
-        context,
-        Some("mailto:"),
-        Slice::from_position(
-            context.bytes,
-            &Position::from_exit_event(context.events, context.index),
-        )
-        .as_str(),
-        true,
-    );
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`GfmAutolinkLiteralMailto`][Name::GfmAutolinkLiteralMailto].
-fn on_exit_gfm_autolink_literal_mailto(context: &mut CompileContext) {
-    generate_autolink(
-        context,
-        None,
-        Slice::from_position(
-            context.bytes,
-            &Position::from_exit_event(context.events, context.index),
-        )
-        .as_str(),
-        true,
-    );
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`GfmAutolinkLiteralProtocol`][Name::GfmAutolinkLiteralProtocol].
-fn on_exit_gfm_autolink_literal_protocol(context: &mut CompileContext) {
-    generate_autolink(
-        context,
-        None,
-        Slice::from_position(
-            context.bytes,
-            &Position::from_exit_event(context.events, context.index),
-        )
-        .as_str(),
-        true,
-    );
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`GfmAutolinkLiteralWww`][Name::GfmAutolinkLiteralWww].
-fn on_exit_gfm_autolink_literal_www(context: &mut CompileContext) {
-    generate_autolink(
-        context,
-        Some("http://"),
-        Slice::from_position(
-            context.bytes,
-            &Position::from_exit_event(context.events, context.index),
-        )
-        .as_str(),
-        true,
-    );
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`GfmAutolinkLiteralXmpp`][Name::GfmAutolinkLiteralXmpp].
-fn on_exit_gfm_autolink_literal_xmpp(context: &mut CompileContext) {
-    generate_autolink(
-        context,
-        None,
-        Slice::from_position(
-            context.bytes,
-            &Position::from_exit_event(context.events, context.index),
-        )
-        .as_str(),
-        true,
-    );
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`GfmFootnoteCall`][Name::GfmFootnoteCall].
-fn on_exit_gfm_footnote_call(context: &mut CompileContext) {
-    let indices = context.media_stack.pop().unwrap().label_id.unwrap();
-    let id =
-        normalize_identifier(Slice::from_indices(context.bytes, indices.0, indices.1).as_str());
-    let safe_id = sanitize(&id.to_lowercase());
-    let mut call_index = 0;
-
-    // See if this has been called before.
-    while call_index < context.gfm_footnote_definition_calls.len() {
-        if context.gfm_footnote_definition_calls[call_index].0 == id {
-            break;
-        }
-        call_index += 1;
-    }
-
-    // New.
-    if call_index == context.gfm_footnote_definition_calls.len() {
-        context.gfm_footnote_definition_calls.push((id, 0));
-    }
-
-    // Increment.
-    context.gfm_footnote_definition_calls[call_index].1 += 1;
-
-    // No call is output in an image alt, though the definition and
-    // backreferences are generated as if it was the case.
-    if context.image_alt_inside {
-        return;
-    }
-
-    context.push(" 1 {
-        context.push("-");
-        context.push(
-            &context.gfm_footnote_definition_calls[call_index]
-                .1
-                .to_string(),
-        );
-    }
-    context.push("\" data-footnote-ref=\"\" aria-describedby=\"footnote-label\">");
-
-    context.push(&(call_index + 1).to_string());
-    context.push("");
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`GfmFootnoteDefinitionLabelString`][Name::GfmFootnoteDefinitionLabelString].
-fn on_exit_gfm_footnote_definition_label_string(context: &mut CompileContext) {
-    context
-        .gfm_footnote_definition_stack
-        .push(Position::from_exit_event(context.events, context.index).to_indices());
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`GfmFootnoteDefinitionPrefix`][Name::GfmFootnoteDefinitionPrefix].
-fn on_exit_gfm_footnote_definition_prefix(context: &mut CompileContext) {
-    // Drop the prefix.
-    context.resume();
-    // Capture everything until end of definition.
-    context.buffer();
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`GfmFootnoteDefinition`][Name::GfmFootnoteDefinition].
-fn on_exit_gfm_footnote_definition(context: &mut CompileContext) {
-    let value = context.resume();
-    let indices = context.gfm_footnote_definition_stack.pop().unwrap();
-    context.tight_stack.pop();
-    context.gfm_footnote_definitions.push((
-        normalize_identifier(Slice::from_indices(context.bytes, indices.0, indices.1).as_str()),
-        value,
-    ));
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`GfmStrikethrough`][Name::GfmStrikethrough].
-fn on_exit_gfm_strikethrough(context: &mut CompileContext) {
-    if !context.image_alt_inside {
-        context.push("");
-    }
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`GfmTable`][Name::GfmTable].
-fn on_exit_gfm_table(context: &mut CompileContext) {
-    context.gfm_table_align = None;
-    context.line_ending_if_needed();
-    context.push("
    • ");
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`GfmTableBody`][Name::GfmTableBody].
-fn on_exit_gfm_table_body(context: &mut CompileContext) {
-    context.line_ending_if_needed();
-    context.push("");
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`GfmTableCell`][Name::GfmTableCell].
-fn on_exit_gfm_table_cell(context: &mut CompileContext) {
-    let align = context.gfm_table_align.as_ref().unwrap();
-
-    if context.gfm_table_column < align.len() {
-        if context.gfm_table_in_head {
-            context.push("");
-        } else {
-            context.push("");
-        }
-    } else {
-        // Stop capturing.
-        context.resume();
-    }
-
-    context.gfm_table_column += 1;
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`GfmTableHead`][Name::GfmTableHead].
-fn on_exit_gfm_table_head(context: &mut CompileContext) {
-    context.gfm_table_in_head = false;
-    context.line_ending_if_needed();
-    context.push("");
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`GfmTableRow`][Name::GfmTableRow].
-fn on_exit_gfm_table_row(context: &mut CompileContext) {
-    let mut column = context.gfm_table_column;
-    let len = context.gfm_table_align.as_ref().unwrap().len();
-
-    // Add “phantom” cells, for body rows that are shorter than the delimiter
-    // row (which is equal to the head row).
-    while column < len {
-        on_enter_gfm_table_cell(context);
-        on_exit_gfm_table_cell(context);
-        column += 1;
-    }
-
-    context.gfm_table_column = 0;
-    context.line_ending_if_needed();
-    context.push("");
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`GfmTaskListItemCheck`][Name::GfmTaskListItemCheck].
-fn on_exit_gfm_task_list_item_check(context: &mut CompileContext) {
-    if !context.image_alt_inside {
-        context.push("/>");
-    }
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`GfmTaskListItemValueChecked`][Name::GfmTaskListItemValueChecked].
-fn on_exit_gfm_task_list_item_value_checked(context: &mut CompileContext) {
-    if !context.image_alt_inside {
-        context.push("checked=\"\" ");
-    }
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`HeadingAtx`][Name::HeadingAtx].
-fn on_exit_heading_atx(context: &mut CompileContext) {
-    let rank = context
-        .heading_atx_rank
-        .take()
-        .expect("`heading_atx_rank` must be set in headings");
-
-    context.push("");
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`HeadingAtxSequence`][Name::HeadingAtxSequence].
-fn on_exit_heading_atx_sequence(context: &mut CompileContext) {
-    // First fence we see.
-    if context.heading_atx_rank.is_none() {
-        let rank = Slice::from_position(
-            context.bytes,
-            &Position::from_exit_event(context.events, context.index),
-        )
-        .len();
-        context.line_ending_if_needed();
-        context.heading_atx_rank = Some(rank);
-        context.push("");
-    }
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`HeadingAtxText`][Name::HeadingAtxText].
-fn on_exit_heading_atx_text(context: &mut CompileContext) {
-    let value = context.resume();
-    context.push(&value);
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`HeadingSetextText`][Name::HeadingSetextText].
-fn on_exit_heading_setext_text(context: &mut CompileContext) {
-    let buf = context.resume();
-    context.heading_setext_buffer = Some(buf);
-    context.slurp_one_line_ending = true;
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`HeadingSetextUnderlineSequence`][Name::HeadingSetextUnderlineSequence].
-fn on_exit_heading_setext_underline_sequence(context: &mut CompileContext) {
-    let text = context
-        .heading_setext_buffer
-        .take()
-        .expect("`heading_atx_rank` must be set in headings");
-    let head = Slice::from_position(
-        context.bytes,
-        &Position::from_exit_event(context.events, context.index),
-    )
-    .head();
-    let rank = if head == Some(b'-') { "2" } else { "1" };
-
-    context.line_ending_if_needed();
-    context.push("");
-    context.push(&text);
-    context.push("");
-}
-
-/// Handle [`Exit`][Kind::Exit]:{[`HtmlFlow`][Name::HtmlFlow],[`HtmlText`][Name::HtmlText]}.
-fn on_exit_html(context: &mut CompileContext) {
-    context.encode_html = true;
-}
-
-/// Handle [`Exit`][Kind::Exit]:{[`HtmlFlowData`][Name::HtmlFlowData],[`HtmlTextData`][Name::HtmlTextData]}.
-fn on_exit_html_data(context: &mut CompileContext) {
-    let slice = Slice::from_position(
-        context.bytes,
-        &Position::from_exit_event(context.events, context.index),
-    );
-    let value = slice.as_str();
-
-    let encoded = if context.options.gfm_tagfilter && context.options.allow_dangerous_html {
-        encode(&gfm_tagfilter(value), context.encode_html)
-    } else {
-        encode(value, context.encode_html)
-    };
-
-    context.push(&encoded);
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`Label`][Name::Label].
-fn on_exit_label(context: &mut CompileContext) {
-    let buf = context.resume();
-    context.media_stack.last_mut().unwrap().label = Some(buf);
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`LabelText`][Name::LabelText].
-fn on_exit_label_text(context: &mut CompileContext) {
-    context.media_stack.last_mut().unwrap().label_id =
-        Some(Position::from_exit_event(context.events, context.index).to_indices());
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`LineEnding`][Name::LineEnding].
-fn on_exit_line_ending(context: &mut CompileContext) {
-    if context.raw_text_inside {
-        context.push(" ");
-    } else if context.slurp_one_line_ending
-        // Ignore line endings after definitions.
-        || (context.index > 1
-            && (context.events[context.index - 2].name == Name::Definition
-                || context.events[context.index - 2].name == Name::GfmFootnoteDefinition))
-    {
-        context.slurp_one_line_ending = false;
-    } else {
-        context.push(&encode(
-            Slice::from_position(
-                context.bytes,
-                &Position::from_exit_event(context.events, context.index),
-            )
-            .as_str(),
-            context.encode_html,
-        ));
-    }
-}
-
-/// Handle [`Exit`][Kind::Exit]:{[`ListOrdered`][Name::ListOrdered],[`ListUnordered`][Name::ListUnordered]}.
-fn on_exit_list(context: &mut CompileContext) {
-    context.tight_stack.pop();
-    context.line_ending();
-    context.push(if context.events[context.index].name == Name::ListOrdered {
-        ""
-    } else {
-        ""
-    });
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`ListItem`][Name::ListItem].
-fn on_exit_list_item(context: &mut CompileContext) {
-    let tight = context.tight_stack.last().unwrap_or(&false);
-    let before_item = skip::opt_back(
-        context.events,
-        context.index - 1,
-        &[
-            Name::BlankLineEnding,
-            Name::BlockQuotePrefix,
-            Name::LineEnding,
-            Name::SpaceOrTab,
-            // Also ignore things that don’t contribute to the document.
-            Name::Definition,
-            Name::GfmFootnoteDefinition,
-        ],
-    );
-    let previous = &context.events[before_item];
-    let tight_paragraph = *tight && previous.name == Name::Paragraph;
-    let empty_item = previous.name == Name::ListItemPrefix;
-
-    context.slurp_one_line_ending = false;
-
-    if !tight_paragraph && !empty_item {
-        context.line_ending_if_needed();
-    }
-
-    context.push("");
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`ListItemValue`][Name::ListItemValue].
-fn on_exit_list_item_value(context: &mut CompileContext) {
-    if context.list_expect_first_marker.unwrap() {
-        let slice = Slice::from_position(
-            context.bytes,
-            &Position::from_exit_event(context.events, context.index),
-        );
-        let value = slice.as_str().parse::().ok().unwrap();
-
-        if value != 1 {
-            context.push(" start=\"");
-            context.push(&value.to_string());
-            context.push("\"");
-        }
-    }
-}
-
-/// Handle [`Exit`][Kind::Exit]:{[`Image`][Name::Image],[`Link`][Name::Link]}.
-fn on_exit_media(context: &mut CompileContext) {
-    let mut is_in_image = false;
-    let mut index = 0;
-
-    // Skip current.
-    let end = context.media_stack.len() - 1;
-    while index < end {
-        if context.media_stack[index].image {
-            is_in_image = true;
-            break;
-        }
-        index += 1;
-    }
-
-    context.image_alt_inside = is_in_image;
-
-    let media = context.media_stack.pop().unwrap();
-    let label = media.label.unwrap();
-    let id = media.reference_id.or(media.label_id).map(|indices| {
-        normalize_identifier(Slice::from_indices(context.bytes, indices.0, indices.1).as_str())
-    });
-
-    let definition_index = if media.destination.is_none() {
-        id.and_then(|id| {
-            let mut index = 0;
-
-            while index < context.definitions.len() {
-                if context.definitions[index].id == id {
-                    return Some(index);
-                }
-
-                index += 1;
-            }
-
-            None
-        })
-    } else {
-        None
-    };
-
-    if !is_in_image {
-        if media.image {
-            context.push("\"");");
-    }
-
-    if !media.image {
-        context.push(&label);
-
-        if !is_in_image {
-            context.push("");
-        }
-    }
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`Paragraph`][Name::Paragraph].
-fn on_exit_paragraph(context: &mut CompileContext) {
-    let tight = context.tight_stack.last().unwrap_or(&false);
-
-    if *tight {
-        context.slurp_one_line_ending = true;
-    } else {
-        context.push("
    ");
-    }
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`ReferenceString`][Name::ReferenceString].
-fn on_exit_reference_string(context: &mut CompileContext) {
-    // Drop stuff.
-    context.resume();
-
-    context.media_stack.last_mut().unwrap().reference_id =
-        Some(Position::from_exit_event(context.events, context.index).to_indices());
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`ResourceDestinationString`][Name::ResourceDestinationString].
-fn on_exit_resource_destination_string(context: &mut CompileContext) {
-    let buf = context.resume();
-    context.media_stack.last_mut().unwrap().destination = Some(buf);
-    context.encode_html = true;
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`ResourceTitleString`][Name::ResourceTitleString].
-fn on_exit_resource_title_string(context: &mut CompileContext) {
-    let buf = context.resume();
-    context.media_stack.last_mut().unwrap().title = Some(buf);
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`Strong`][Name::Strong].
-fn on_exit_strong(context: &mut CompileContext) {
-    if !context.image_alt_inside {
-        context.push("    ");
-    }
-}
-
-/// Handle [`Exit`][Kind::Exit]:[`ThematicBreak`][Name::ThematicBreak].
-fn on_exit_thematic_break(context: &mut CompileContext) {
-    context.line_ending_if_needed();
-    context.push("
    ");
-}
-
-/// Generate a footnote section.
-fn generate_footnote_section(context: &mut CompileContext) {
-    context.line_ending_if_needed();
-    context.push("
    <");
-    if let Some(ref value) = context.options.gfm_footnote_label_tag_name {
-        context.push(&encode(value, context.encode_html));
-    } else {
-        context.push("h2");
-    }
-    context.push(" id=\"footnote-label\" ");
-    if let Some(ref value) = context.options.gfm_footnote_label_attributes {
-        context.push(value);
-    } else {
-        context.push("class=\"sr-only\"");
-    }
-    context.push(">");
-    if let Some(ref value) = context.options.gfm_footnote_label {
-        context.push(&encode(value, context.encode_html));
-    } else {
-        context.push("Footnotes");
-    }
-    context.push("");
-    context.line_ending();
-    context.push("
      ");
-
-    let mut index = 0;
-    while index < context.gfm_footnote_definition_calls.len() {
-        generate_footnote_item(context, index);
-        index += 1;
-    }
-
-    context.line_ending();
-    context.push("
    ");
-    context.line_ending();
-    context.push("
    ");
-    context.line_ending();
-}
-
-/// Generate a footnote item from a call.
-fn generate_footnote_item(context: &mut CompileContext, index: usize) {
-    let id = &context.gfm_footnote_definition_calls[index].0;
-    let safe_id = sanitize(&id.to_lowercase());
-
-    // Find definition: we’ll always find it.
-    let mut definition_index = 0;
-    while definition_index < context.gfm_footnote_definitions.len() {
-        if &context.gfm_footnote_definitions[definition_index].0 == id {
-            break;
-        }
-        definition_index += 1;
-    }
-
-    debug_assert_ne!(
-        definition_index,
-        context.gfm_footnote_definitions.len(),
-        "expected definition"
-    );
-
-    context.line_ending();
-    context.push("
  • ");
-    context.line_ending();
-
-    // Create one or more backreferences.
-    let mut reference_index = 0;
-    let mut backreferences = String::new();
-    while reference_index < context.gfm_footnote_definition_calls[index].1 {
-        if reference_index != 0 {
-            backreferences.push(' ');
-        }
-        backreferences.push_str("↩");
-        if reference_index != 0 {
-            backreferences.push_str("");
-            backreferences.push_str(&(reference_index + 1).to_string());
-            backreferences.push_str("");
-        }
-        backreferences.push_str("");
-
-        reference_index += 1;
-    }
-
-    let value = context.gfm_footnote_definitions[definition_index].1.clone();
-    let bytes = value.as_bytes();
-    let mut byte_index = bytes.len();
-    // Move back past EOL.
-    while byte_index > 0 && matches!(bytes[byte_index - 1], b'\n' | b'\r') {
-        byte_index -= 1;
-    }
-    // Check if it ends in `
    `.
-    // This is a bit funky if someone wrote a safe paragraph by hand in
-    // there.
-    // But in all other cases, `<` and `>` would be encoded, so we can be
-    // sure that this is generated by our compiler.
-    if byte_index > 3
-        && bytes[byte_index - 4] == b'<'
-        && bytes[byte_index - 3] == b'/'
-        && bytes[byte_index - 2] == b'p'
-        && bytes[byte_index - 1] == b'>'
-    {
-        let (before, after) = bytes.split_at(byte_index - 4);
-        let mut result = String::new();
-        result.push_str(str::from_utf8(before).unwrap());
-        result.push(' ');
-        result.push_str(&backreferences);
-        result.push_str(str::from_utf8(after).unwrap());
-        context.push(&result);
-    } else {
-        context.push(&value);
-        context.line_ending_if_needed();
-        context.push(&backreferences);
-    }
-    context.line_ending_if_needed();
-    context.push("
    • ");
-}
-
-/// Generate an autolink (used by unicode autolinks and GFM autolink literals).
-fn generate_autolink(
-    context: &mut CompileContext,
-    protocol: Option<&str>,
-    value: &str,
-    is_gfm_literal: bool,
-) {
-    let mut is_in_link = false;
-    let mut index = 0;
-
-    while index < context.media_stack.len() {
-        if !context.media_stack[index].image {
-            is_in_link = true;
-            break;
-        }
-        index += 1;
-    }
-
-    if !context.image_alt_inside && (!is_in_link || !is_gfm_literal) {
-        context.push("");
-    }
-
-    context.push(&encode(value, context.encode_html));
-
-    if !context.image_alt_inside && (!is_in_link || !is_gfm_literal) {
-        context.push("");
-    }
-}
-- 
cgit