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Fix bug and add expr , pat , ty matcher

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This commit is contained in:
Edwin Cheng 2019-04-13 18:38:31 +08:00
parent f66300ccd1
commit 6646d49f23
10 changed files with 307 additions and 33 deletions
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33
crates/ra_parser/src/lib.rs
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@ -53,20 +53,39 @@ pub trait TreeSink {
fn error(&mut self, error: ParseError);
}
/// Parse given tokens into the given sink as a rust file.
pub fn parse(token_source: &dyn TokenSource, tree_sink: &mut dyn TreeSink) {
fn parse_from_tokens<F>(token_source: &dyn TokenSource, tree_sink: &mut dyn TreeSink, f: F)
where
F: FnOnce(&mut parser::Parser),
{
let mut p = parser::Parser::new(token_source);
grammar::root(&mut p);
f(&mut p);
let events = p.finish();
event::process(tree_sink, events);
}
/// Parse given tokens into the given sink as a rust file.
pub fn parse(token_source: &dyn TokenSource, tree_sink: &mut dyn TreeSink) {
parse_from_tokens(token_source, tree_sink, grammar::root);
}
/// Parse given tokens into the given sink as a path
pub fn parse_path(token_source: &dyn TokenSource, tree_sink: &mut dyn TreeSink) {
let mut p = parser::Parser::new(token_source);
grammar::path(&mut p);
let events = p.finish();
event::process(tree_sink, events);
parse_from_tokens(token_source, tree_sink, grammar::path);
}
/// Parse given tokens into the given sink as a expression
pub fn parse_expr(token_source: &dyn TokenSource, tree_sink: &mut dyn TreeSink) {
parse_from_tokens(token_source, tree_sink, grammar::expr);
}
/// Parse given tokens into the given sink as a ty
pub fn parse_ty(token_source: &dyn TokenSource, tree_sink: &mut dyn TreeSink) {
parse_from_tokens(token_source, tree_sink, grammar::type_);
}
/// Parse given tokens into the given sink as a pattern
pub fn parse_pat(token_source: &dyn TokenSource, tree_sink: &mut dyn TreeSink) {
parse_from_tokens(token_source, tree_sink, grammar::pattern);
}
/// A parsing function for a specific braced-block.