feat: Iter struct
This commit is contained in:
parent
f786233852
commit
33f78ee207
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@ -60,6 +60,8 @@ impl List {
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}
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}
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}
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}
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#[cfg_attr(test, derive(PartialEq))]
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#[derive(Debug)]
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pub struct ListItem<'a> {
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pub struct ListItem<'a> {
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pub bullet: &'a str,
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pub bullet: &'a str,
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}
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}
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@ -47,6 +47,7 @@ pub use self::{
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#[derive(Debug)]
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#[derive(Debug)]
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pub enum Element<'a> {
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pub enum Element<'a> {
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Root,
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Block {
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Block {
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block: Block<'a>,
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block: Block<'a>,
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begin: usize,
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begin: usize,
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428
src/iter.rs
Normal file
428
src/iter.rs
Normal file
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@ -0,0 +1,428 @@
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use indextree::{Arena, NodeId};
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use crate::elements::*;
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#[derive(Debug)]
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pub enum Container<'a> {
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Block(&'a Block<'a>),
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Bold,
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Document,
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DynBlock(&'a DynBlock<'a>),
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Headline(&'a Headline<'a>),
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Italic,
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List(&'a List),
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ListItem(&'a ListItem<'a>),
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Paragraph,
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Section,
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Strike,
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Underline,
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}
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#[derive(Debug)]
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pub enum Event<'a> {
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Start(Container<'a>),
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End(Container<'a>),
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Clock(&'a Clock<'a>),
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Cookie(&'a Cookie<'a>),
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Drawer(&'a Drawer<'a>),
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FnDef(&'a FnDef<'a>),
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FnRef(&'a FnRef<'a>),
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InlineCall(&'a InlineCall<'a>),
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InlineSrc(&'a InlineSrc<'a>),
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Keyword(&'a Keyword<'a>),
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Link(&'a Link<'a>),
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Macros(&'a Macros<'a>),
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Planning(&'a Planning<'a>),
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RadioTarget(&'a RadioTarget<'a>),
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Rule,
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Snippet(&'a Snippet<'a>),
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Target(&'a Target<'a>),
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Timestamp(&'a Timestamp<'a>),
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Text(&'a str),
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Code(&'a str),
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Verbatim(&'a str),
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BabelCall(&'a str),
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}
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enum State {
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Start,
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End,
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Empty,
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Finished,
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}
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pub struct Iter<'a> {
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arena: &'a Arena<Element<'a>>,
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node: NodeId,
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state: State,
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}
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impl<'a> Iter<'a> {
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pub(crate) fn new(arena: &'a Arena<Element<'a>>, node: NodeId) -> Self {
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Iter {
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arena,
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node,
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state: State::Start,
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}
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}
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fn start_event(&mut self) -> Option<Event<'a>> {
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let node = &self.arena[self.node];
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match &node.data {
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Element::Root => {
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self.state = State::Finished;
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None
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}
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Element::BabelCall { value, .. } => {
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self.state = State::Start;
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Some(Event::BabelCall(value))
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}
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Element::Verbatim { value, .. } => {
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self.state = State::Start;
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Some(Event::Verbatim(value))
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}
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Element::Code { value, .. } => {
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self.state = State::Start;
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Some(Event::Code(value))
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}
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Element::Text { value, .. } => {
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self.state = State::Start;
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Some(Event::Text(value))
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}
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Element::Block { block, .. } => {
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if node.first_child().is_none() {
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self.state = State::Empty;
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} else {
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self.state = State::Start;
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}
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Some(Event::Start(Container::Block(block)))
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}
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Element::Bold { .. } => {
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if node.first_child().is_none() {
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self.state = State::Empty;
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} else {
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self.state = State::Start;
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}
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Some(Event::Start(Container::Bold))
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}
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Element::Document { .. } => {
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if node.first_child().is_none() {
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self.state = State::Empty;
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} else {
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self.state = State::Start;
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}
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Some(Event::Start(Container::Document))
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}
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Element::DynBlock { dyn_block, .. } => {
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if node.first_child().is_none() {
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self.state = State::Empty;
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} else {
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self.state = State::Start;
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}
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Some(Event::Start(Container::DynBlock(dyn_block)))
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}
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Element::Headline { headline, .. } => {
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if node.first_child().is_none() {
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self.state = State::Empty;
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} else {
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self.state = State::Start;
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}
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Some(Event::Start(Container::Headline(headline)))
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}
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Element::Italic { .. } => {
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if node.first_child().is_none() {
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self.state = State::Empty;
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} else {
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self.state = State::Start;
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}
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Some(Event::Start(Container::Italic))
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}
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Element::List { list, .. } => {
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if node.first_child().is_none() {
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self.state = State::Empty;
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} else {
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self.state = State::Start;
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}
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Some(Event::Start(Container::List(list)))
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}
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Element::ListItem { list_item, .. } => {
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if node.first_child().is_none() {
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self.state = State::Empty;
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} else {
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self.state = State::Start;
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}
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Some(Event::Start(Container::ListItem(list_item)))
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}
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Element::Paragraph { .. } => {
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if node.first_child().is_none() {
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self.state = State::Empty;
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} else {
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self.state = State::Start;
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}
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Some(Event::Start(Container::Paragraph))
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}
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Element::Section { .. } => {
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if node.first_child().is_none() {
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self.state = State::Empty;
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} else {
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self.state = State::Start;
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}
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Some(Event::Start(Container::Section))
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}
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Element::Strike { .. } => {
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if node.first_child().is_none() {
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self.state = State::Empty;
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} else {
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self.state = State::Start;
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}
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Some(Event::Start(Container::Strike))
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}
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Element::Underline { .. } => {
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if node.first_child().is_none() {
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self.state = State::Empty;
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} else {
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self.state = State::Start;
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}
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Some(Event::Start(Container::Underline))
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}
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Element::Clock { clock, .. } => {
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self.state = State::Start;
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Some(Event::Clock(clock))
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}
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Element::Cookie { cookie, .. } => {
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self.state = State::Start;
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Some(Event::Cookie(cookie))
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}
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Element::Drawer { drawer, .. } => {
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self.state = State::Start;
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Some(Event::Drawer(drawer))
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}
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Element::FnDef { fn_def, .. } => {
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self.state = State::Start;
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Some(Event::FnDef(fn_def))
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}
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Element::FnRef { fn_ref, .. } => {
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self.state = State::Start;
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Some(Event::FnRef(fn_ref))
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}
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Element::InlineCall { inline_call, .. } => {
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self.state = State::Start;
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Some(Event::InlineCall(inline_call))
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}
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Element::InlineSrc { inline_src, .. } => {
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self.state = State::Start;
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Some(Event::InlineSrc(inline_src))
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}
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Element::Keyword { keyword, .. } => {
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self.state = State::Start;
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Some(Event::Keyword(keyword))
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}
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Element::Link { link, .. } => {
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self.state = State::Start;
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Some(Event::Link(link))
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}
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Element::Macros { macros, .. } => {
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self.state = State::Start;
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Some(Event::Macros(macros))
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}
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Element::Planning(planning) => {
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self.state = State::Start;
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Some(Event::Planning(planning))
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}
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Element::RadioTarget { radio_target, .. } => {
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self.state = State::Start;
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Some(Event::RadioTarget(radio_target))
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}
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Element::Rule { .. } => {
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self.state = State::Start;
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Some(Event::Rule)
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}
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Element::Snippet { snippet, .. } => {
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self.state = State::Start;
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Some(Event::Snippet(snippet))
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}
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Element::Target { target, .. } => {
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self.state = State::Start;
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Some(Event::Target(target))
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}
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Element::Timestamp { timestamp, .. } => {
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self.state = State::Start;
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Some(Event::Timestamp(timestamp))
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}
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}
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}
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fn end_event(&mut self) -> Option<Event<'a>> {
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let node = &self.arena[self.node];
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match &node.data {
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Element::Root => {
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self.state = State::Finished;
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None
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}
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Element::BabelCall { value, .. } => {
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self.state = State::End;
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Some(Event::BabelCall(value))
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}
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Element::Verbatim { value, .. } => {
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self.state = State::End;
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Some(Event::Verbatim(value))
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}
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Element::Code { value, .. } => {
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self.state = State::End;
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Some(Event::Code(value))
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}
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Element::Text { value, .. } => {
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self.state = State::End;
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Some(Event::Text(value))
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}
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Element::Block { block, .. } => {
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self.state = State::End;
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Some(Event::End(Container::Block(block)))
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}
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Element::Bold { .. } => {
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self.state = State::End;
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Some(Event::End(Container::Bold))
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}
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Element::Document { .. } => {
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self.state = State::End;
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Some(Event::End(Container::Document))
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}
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Element::DynBlock { dyn_block, .. } => {
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self.state = State::End;
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Some(Event::End(Container::DynBlock(dyn_block)))
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}
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Element::Headline { headline, .. } => {
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self.state = State::End;
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Some(Event::End(Container::Headline(headline)))
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}
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Element::Italic { .. } => {
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self.state = State::End;
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Some(Event::End(Container::Italic))
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}
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Element::List { list, .. } => {
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self.state = State::End;
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Some(Event::End(Container::List(list)))
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}
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Element::ListItem { list_item, .. } => {
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self.state = State::End;
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Some(Event::End(Container::ListItem(list_item)))
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}
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Element::Paragraph { .. } => {
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self.state = State::End;
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Some(Event::End(Container::Paragraph))
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}
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Element::Section { .. } => {
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self.state = State::End;
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Some(Event::End(Container::Section))
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}
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Element::Strike { .. } => {
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self.state = State::End;
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Some(Event::End(Container::Strike))
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}
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Element::Underline { .. } => {
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self.state = State::End;
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Some(Event::End(Container::Underline))
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}
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Element::Clock { clock, .. } => {
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self.state = State::End;
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Some(Event::Clock(clock))
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}
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Element::Cookie { cookie, .. } => {
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self.state = State::End;
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Some(Event::Cookie(cookie))
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}
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Element::Drawer { drawer, .. } => {
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self.state = State::End;
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Some(Event::Drawer(drawer))
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}
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Element::FnDef { fn_def, .. } => {
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self.state = State::End;
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Some(Event::FnDef(fn_def))
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}
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Element::FnRef { fn_ref, .. } => {
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self.state = State::End;
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Some(Event::FnRef(fn_ref))
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}
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Element::InlineCall { inline_call, .. } => {
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self.state = State::End;
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Some(Event::InlineCall(inline_call))
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}
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Element::InlineSrc { inline_src, .. } => {
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self.state = State::End;
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Some(Event::InlineSrc(inline_src))
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}
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Element::Keyword { keyword, .. } => {
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self.state = State::End;
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Some(Event::Keyword(keyword))
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}
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Element::Link { link, .. } => {
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self.state = State::End;
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Some(Event::Link(link))
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}
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Element::Macros { macros, .. } => {
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self.state = State::End;
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Some(Event::Macros(macros))
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}
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Element::Planning(planning) => {
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self.state = State::End;
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Some(Event::Planning(planning))
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}
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Element::RadioTarget { radio_target, .. } => {
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self.state = State::End;
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Some(Event::RadioTarget(radio_target))
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}
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Element::Rule { .. } => {
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self.state = State::End;
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Some(Event::Rule)
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}
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Element::Snippet { snippet, .. } => {
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self.state = State::End;
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Some(Event::Snippet(snippet))
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}
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Element::Target { target, .. } => {
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self.state = State::End;
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||||||
|
Some(Event::Target(target))
|
||||||
|
}
|
||||||
|
Element::Timestamp { timestamp, .. } => {
|
||||||
|
self.state = State::End;
|
||||||
|
Some(Event::Timestamp(timestamp))
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl<'a> Iterator for Iter<'a> {
|
||||||
|
type Item = Event<'a>;
|
||||||
|
|
||||||
|
fn next(&mut self) -> Option<Self::Item> {
|
||||||
|
match self.state {
|
||||||
|
State::Finished => None,
|
||||||
|
State::End => {
|
||||||
|
let node = &self.arena[self.node];
|
||||||
|
if let Some(sibling_node) = node.next_sibling() {
|
||||||
|
self.node = sibling_node;
|
||||||
|
self.start_event()
|
||||||
|
} else if let Some(parent_node) = node.parent() {
|
||||||
|
self.node = parent_node;
|
||||||
|
self.end_event()
|
||||||
|
} else {
|
||||||
|
None
|
||||||
|
}
|
||||||
|
}
|
||||||
|
State::Start => {
|
||||||
|
let node = &self.arena[self.node];
|
||||||
|
if let Some(child_node) = node.first_child() {
|
||||||
|
self.node = child_node;
|
||||||
|
self.start_event()
|
||||||
|
} else if let Some(parent_node) = node.parent() {
|
||||||
|
self.node = parent_node;
|
||||||
|
self.end_event()
|
||||||
|
} else {
|
||||||
|
None
|
||||||
|
}
|
||||||
|
}
|
||||||
|
State::Empty => self.end_event(),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
|
@ -140,6 +140,7 @@
|
||||||
//! ```
|
//! ```
|
||||||
|
|
||||||
pub mod elements;
|
pub mod elements;
|
||||||
|
pub mod iter;
|
||||||
pub mod org;
|
pub mod org;
|
||||||
#[cfg(feature = "serde")]
|
#[cfg(feature = "serde")]
|
||||||
mod serde;
|
mod serde;
|
||||||
|
|
35
src/org.rs
35
src/org.rs
|
@ -1,4 +1,5 @@
|
||||||
use crate::elements::*;
|
use crate::elements::*;
|
||||||
|
use crate::iter::Iter;
|
||||||
|
|
||||||
use indextree::{Arena, NodeId};
|
use indextree::{Arena, NodeId};
|
||||||
use jetscii::bytes;
|
use jetscii::bytes;
|
||||||
|
@ -6,23 +7,39 @@ use memchr::{memchr_iter, memrchr_iter};
|
||||||
|
|
||||||
pub struct Org<'a> {
|
pub struct Org<'a> {
|
||||||
pub(crate) arena: Arena<Element<'a>>,
|
pub(crate) arena: Arena<Element<'a>>,
|
||||||
pub(crate) root: NodeId,
|
pub(crate) document: NodeId,
|
||||||
|
root: Option<NodeId>,
|
||||||
text: &'a str,
|
text: &'a str,
|
||||||
}
|
}
|
||||||
|
|
||||||
impl<'a> Org<'a> {
|
impl<'a> Org<'a> {
|
||||||
pub fn new(text: &'a str) -> Self {
|
pub fn new(text: &'a str) -> Self {
|
||||||
let mut arena = Arena::new();
|
let mut arena = Arena::new();
|
||||||
let root = arena.new_node(Element::Document {
|
let document = arena.new_node(Element::Document {
|
||||||
begin: 0,
|
begin: 0,
|
||||||
end: text.len(),
|
end: text.len(),
|
||||||
});
|
});
|
||||||
|
|
||||||
Org { arena, root, text }
|
Org {
|
||||||
|
arena,
|
||||||
|
root: None,
|
||||||
|
document,
|
||||||
|
text,
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
pub fn finish(&self) -> bool {
|
pub fn finish(&self) -> bool {
|
||||||
self.arena[self.root].first_child().is_some()
|
self.arena[self.document].first_child().is_some()
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn iter(&'a mut self) -> Iter<'a> {
|
||||||
|
if let Some(root) = self.root {
|
||||||
|
Iter::new(&self.arena, root)
|
||||||
|
} else {
|
||||||
|
let root = self.arena.new_node(Element::Root);
|
||||||
|
root.append(self.document, &mut self.arena).unwrap();
|
||||||
|
Iter::new(&self.arena, root)
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
pub fn parse(&mut self) {
|
pub fn parse(&mut self) {
|
||||||
|
@ -30,7 +47,7 @@ impl<'a> Org<'a> {
|
||||||
return;
|
return;
|
||||||
}
|
}
|
||||||
|
|
||||||
let mut node = self.root;
|
let mut node = self.document;
|
||||||
loop {
|
loop {
|
||||||
match self.arena[node].data {
|
match self.arena[node].data {
|
||||||
Element::Document { begin, end, .. }
|
Element::Document { begin, end, .. }
|
||||||
|
@ -152,6 +169,14 @@ impl<'a> Org<'a> {
|
||||||
fn parse_elements_children(&mut self, mut begin: usize, end: usize, node: NodeId) {
|
fn parse_elements_children(&mut self, mut begin: usize, end: usize, node: NodeId) {
|
||||||
'out: while begin < end {
|
'out: while begin < end {
|
||||||
let text = &self.text[begin..end];
|
let text = &self.text[begin..end];
|
||||||
|
|
||||||
|
if let Some((ty, off)) = self.parse_element(begin, end) {
|
||||||
|
let new_node = self.arena.new_node(ty);
|
||||||
|
node.append(new_node, &mut self.arena).unwrap();
|
||||||
|
begin += off;
|
||||||
|
continue 'out;
|
||||||
|
}
|
||||||
|
|
||||||
let mut pos = 0;
|
let mut pos = 0;
|
||||||
for i in memchr_iter(b'\n', text.as_bytes()) {
|
for i in memchr_iter(b'\n', text.as_bytes()) {
|
||||||
if text.as_bytes()[pos..i].iter().all(u8::is_ascii_whitespace) {
|
if text.as_bytes()[pos..i].iter().all(u8::is_ascii_whitespace) {
|
||||||
|
|
|
@ -10,7 +10,7 @@ impl Serialize for Org<'_> {
|
||||||
serializer.serialize_newtype_struct(
|
serializer.serialize_newtype_struct(
|
||||||
"Element",
|
"Element",
|
||||||
&ElementNode {
|
&ElementNode {
|
||||||
node: self.root,
|
node: self.document,
|
||||||
arena: &self.arena,
|
arena: &self.arena,
|
||||||
},
|
},
|
||||||
)
|
)
|
||||||
|
@ -27,6 +27,10 @@ impl Serialize for ElementNode<'_> {
|
||||||
fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
|
fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
|
||||||
let mut state;
|
let mut state;
|
||||||
match &self.arena[self.node].data {
|
match &self.arena[self.node].data {
|
||||||
|
Element::Root => {
|
||||||
|
state = serializer.serialize_struct("Element::Root", 2)?;
|
||||||
|
state.serialize_field("type", "root")?;
|
||||||
|
}
|
||||||
Element::Document { begin, end } => {
|
Element::Document { begin, end } => {
|
||||||
state = serializer.serialize_struct("Element::Document", 2)?;
|
state = serializer.serialize_struct("Element::Document", 2)?;
|
||||||
state.serialize_field("type", "document")?;
|
state.serialize_field("type", "document")?;
|
||||||
|
|
Loading…
Reference in a new issue