Only accept variable (no complex expression) in the fake for loop.

SimonSapin · SimonSapin · commit 4cdcd58a6325 · 2013-08-07T21:43:46.000+01:00
diff --git a/parser.rs b/parser.rs
@@ -64,7 +64,7 @@ impl Iterator<(ComponentValue, SourceLocation)> for ComponentValueIterator {
 // Work around "error: cannot borrow `*iter` as mutable more than once at a time"
 // when using a normal for loop.
 macro_rules! for_iter(
-    ($iter: expr, $pattern: pat, $loop_body: expr) => (
+    ($iter: ident, $pattern: pat, $loop_body: expr) => (
         loop {
             match $iter.next() { None => break, Some($pattern) => $loop_body }
         }

Original file line number	Diff line number	Diff line change
`@@ -64,7 +64,7 @@ impl Iterator<(ComponentValue, SourceLocation)> for ComponentValueIterator {`
`64`	`64`	// Work around "error: cannot borrow `*iter` as mutable more than once at a time"
`65`	`65`	`// when using a normal for loop.`
`66`	`66`	`macro_rules! for_iter(`
`67`		`- ($iter: expr, $pattern: pat, $loop_body: expr) => (`
	`67`	`+ ($iter: ident, $pattern: pat, $loop_body: expr) => (`
`68`	`68`	`loop {`
`69`	`69`	`match $iter.next() { None => break, Some($pattern) => $loop_body }`
`70`	`70`	`}`