libsyntax: Fix a parsing problem with the temporary syntax for by-value pattern match bindings

pcwalton · pcwalton · commit 899400cd1a74 · 2012-08-01T12:28:47.000-07:00
diff --git a/src/libsyntax/parse/parser.rs b/src/libsyntax/parse/parser.rs
@@ -1693,8 +1693,8 @@ class parser {
             }
           }
           tok {
-            if !is_ident(tok) || self.is_keyword(~"true")
-                || self.is_keyword(~"false") {
+            if (!is_ident(tok) && tok != token::BINOP(token::PLUS)) ||
+                    self.is_keyword(~"true") || self.is_keyword(~"false") {
                 let val = self.parse_expr_res(RESTRICT_NO_BAR_OP);
                 if self.eat_keyword(~"to") {
                     let end = self.parse_expr_res(RESTRICT_NO_BAR_OP);

Original file line number	Diff line number	Diff line change
`@@ -1693,8 +1693,8 @@ class parser {`
`1693`	`1693`	`}`
`1694`	`1694`	`}`
`1695`	`1695`	`tok {`
`1696`		`- if !is_ident(tok) \|\| self.is_keyword(~"true")`
`1697`		`- \|\| self.is_keyword(~"false") {`
	`1696`	`+ if (!is_ident(tok) && tok != token::BINOP(token::PLUS)) \|\|`
	`1697`	`+ self.is_keyword(~"true") \|\| self.is_keyword(~"false") {`
`1698`	`1698`	`let val = self.parse_expr_res(RESTRICT_NO_BAR_OP);`
`1699`	`1699`	`if self.eat_keyword(~"to") {`
`1700`	`1700`	`let end = self.parse_expr_res(RESTRICT_NO_BAR_OP);`