58 lines
1.3 KiB
Rust
58 lines
1.3 KiB
Rust
use {File, SyntaxKind, Token};
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use syntax_kinds::*;
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#[macro_use]
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mod parser;
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mod input;
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mod event;
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mod grammar;
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use self::event::Event;
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/// Parse a sequence of tokens into the representative node tree
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pub fn parse(text: String, tokens: &[Token]) -> File {
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let events = {
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let input = input::ParserInput::new(&text, tokens);
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let mut parser = parser::Parser::new(&input);
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grammar::file(&mut parser);
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parser.into_events()
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};
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event::to_file(text, tokens, events)
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}
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fn is_insignificant(kind: SyntaxKind) -> bool {
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match kind {
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WHITESPACE | COMMENT => true,
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_ => false,
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}
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}
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impl<'p> parser::Parser<'p> {
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fn at(&self, kind: SyntaxKind) -> bool {
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self.current() == kind
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}
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fn err_and_bump(&mut self, message: &str) {
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let err = self.start();
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self.error(message);
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self.bump();
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err.complete(self, ERROR);
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}
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fn expect(&mut self, kind: SyntaxKind) -> bool {
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if self.at(kind) {
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self.bump();
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true
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} else {
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self.error(format!("expected {:?}", kind));
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false
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}
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}
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fn eat(&mut self, kind: SyntaxKind) -> bool {
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self.at(kind) && {
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self.bump();
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true
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}
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}
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}
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