Merge #1148

1148: Add token_tree_to_xxx functions r=matklad a=edwin0cheng

<del>As discus in  PR #1147 , this PR added a `mbe::MacroKind` .
Currently only 2 kind of macro are supported, `SourceFile` and `Block`.</del>

Added following functions for `tt::TokenTree` and `ast::Node` conversion:

* token_tree_to_expr
* token_tree_to_pat
* token_tree_to_ty
* token_tree_to_macro_stmts
* token_tree_to_macro_items

And added two new syntax kind:

* MACRO_ITEMS
* MACRO_STMTS

Co-authored-by: Edwin Cheng <[email protected]>

1 files changed, 8 insertions, 0 deletions

diff --git a/crates/ra_parser/src/lib.rs b/crates/ra_parser/src/lib.rs
index 11b5b9a75..0ea942b6e 100644
--- a/crates/ra_parser/src/lib.rs
+++ b/crates/ra_parser/src/lib.rs
@@ -98,6 +98,14 @@ pub fn parse_item(token_source: &dyn TokenSource, tree_sink: &mut dyn TreeSink)
     parse_from_tokens(token_source, tree_sink, grammar::item);
 }
 
+pub fn parse_macro_items(token_source: &dyn TokenSource, tree_sink: &mut dyn TreeSink) {
+    parse_from_tokens(token_source, tree_sink, grammar::macro_items);
+}
+
+pub fn parse_macro_stmts(token_source: &dyn TokenSource, tree_sink: &mut dyn TreeSink) {
+    parse_from_tokens(token_source, tree_sink, grammar::macro_stmts);
+}
+
 /// A parsing function for a specific braced-block.
 pub struct Reparser(fn(&mut parser::Parser));