commit 3e22c0ba82a5d3f0cc9dba9324a0d8eb96d04d52
author David Tolnay <dtolnay@gmail.com> Sun Jun 23 16:58:38 2019 -0700
committer David Tolnay <dtolnay@gmail.com> Sun Jun 23 16:58:38 2019 -0700
tree 45929cab18e0e088ea8f382db94beb74d5eb5785
parent a6995ba7361d148682fa947fd4bcd1212778aa81

Make note of forks that can be optimized

src/expr.rs

diff --git a/src/expr.rs b/src/expr.rs
index 69f449d..1caa049 100644
--- a/src/expr.rs
+++ b/src/expr.rs
@@ -1234,6 +1234,7 @@
     // box <trailer>
     #[cfg(feature = "full")]
     fn unary_expr(input: ParseStream, allow_struct: AllowStruct) -> Result<Expr> {
+        // TODO: optimize using advance_to
         let ahead = input.fork();
         ahead.call(Attribute::parse_outer)?;
         if ahead.peek(Token![&])
@@ -1270,6 +1271,7 @@
 
     #[cfg(not(feature = "full"))]
     fn unary_expr(input: ParseStream, allow_struct: AllowStruct) -> Result<Expr> {
+        // TODO: optimize using advance_to
         let ahead = input.fork();
         ahead.call(Attribute::parse_outer)?;
         if ahead.peek(Token![*]) || ahead.peek(Token![!]) || ahead.peek(Token![-]) {
@@ -2185,6 +2187,7 @@
         let mut fields = Punctuated::new();
         loop {
             let attrs = content.call(Attribute::parse_outer)?;
+            // TODO: optimize using advance_to
             if content.fork().parse::<Member>().is_err() {
                 if attrs.is_empty() {
                     break;
@@ -2416,6 +2419,7 @@
 
     #[cfg(feature = "full")]
     fn parse_stmt(input: ParseStream, allow_nosemi: bool) -> Result<Stmt> {
+        // TODO: optimize using advance_to
         let ahead = input.fork();
         ahead.call(Attribute::parse_outer)?;