1 use {File, FileBuilder, Sink, SyntaxKind, Token};
7 use self::event_parser::Event;
9 /// Parse a sequence of tokens into the representative node tree
10 pub fn parse(text: String, tokens: &[Token]) -> File {
11 let events = event_parser::parse(&text, tokens);
12 from_events_to_file(text, tokens, events)
15 fn from_events_to_file(text: String, tokens: &[Token], events: Vec<Event>) -> File {
16 let mut builder = FileBuilder::new(text);
19 let mut holes = Vec::new();
20 let mut forward_parents = Vec::new();
22 for (i, event) in events.iter().enumerate() {
23 if holes.last() == Some(&i) {
33 &Event::Start { .. } => {
34 forward_parents.clear();
37 let (kind, fwd) = match events[idx] {
41 } => (kind, forward_parent),
44 forward_parents.push((idx, kind));
45 if let Some(fwd) = fwd {
51 for &(idx, kind) in forward_parents.iter().into_iter().rev() {
52 builder.start_internal(kind);
58 while idx < tokens.len() {
59 let token = tokens[idx];
60 if is_insignificant(token.kind) {
62 builder.leaf(token.kind, token.len);
67 builder.finish_internal()
73 let token = tokens[idx];
74 if !is_insignificant(token.kind) {
78 builder.leaf(token.kind, token.len);
79 if n_raw_tokens == 0 {
83 &Event::Error { ref message } => builder.error().message(message.clone()).emit(),
89 fn is_insignificant(kind: SyntaxKind) -> bool {
91 WHITESPACE | COMMENT => true,