[WIP] init ra-fmt2 for issue rust-lang#1665

crates/ra_fmt2/src/fmt_model.rs

@@ -1,25 +1,14 @@
+use crate::edit_tree::EditTree;
+
 use ra_syntax::{
     NodeOrToken, SmolStr,
     SyntaxElement, TextUnit,
-    SyntaxKind::*, 
+    SyntaxKind::{self, *}, 
     SyntaxNode, SyntaxToken, T,
     WalkEvent, TextRange,
 };
-use std::collections::HashMap;
-
-// TODO make more like intellij's fmt model 
-// Model holds immutable tree and mutable intermediate model to produce diff
-// the model will probably have to create its own tree to add the extra 
-// info to each token/node:
-//
-// [1,2,3];
-// can be Brace token, ident, comma all of which knows their own rules and apply
-// them accordingly to produce [1, 2, 3]; ???
 
-#[derive(Debug)]
-struct EditTree {
-
-}
+use std::collections::HashMap;
 
 #[derive(Debug)]
 pub(super) struct FmtModel {

crates/ra_fmt2/src/pattern.rs

@@ -117,6 +117,7 @@ from_array!(0, 1, 2, 3, 4, 5, 6, 7, 8);
 ///
 /// This is generic over `P: AsRef<Pattern>`, so it works with any type which
 /// contains a pattern.
+#[derive(Debug)]
 pub(crate) struct PatternSet<P> {
     by_kind: HashMap<SyntaxKind, Vec<P>>,
     unconstrained: Vec<P>,
@@ -147,7 +148,7 @@ impl<'a, P: AsRef<Pattern>> PatternSet<&'a P> {
         self.by_kind
             .get(&element.kind())
             .into_iter()
-            //.inspect(|n| println!("{:?}", n)) //TODO LOOK AT PATTERN AND KIND 
+            //.inspect(|n| println!("{:?}", n)) // TODO LOOK AT PATTERN AND KIND
             .flat_map(|vec| vec.iter())
             .chain(self.unconstrained.iter())
             .map(|&p| p)