Bison grammar: support parsing default trait impls

bleibig · bleibig · commit e93b2abf37e5 · 2015-03-01T13:59:34.000-08:00
diff --git a/src/grammar/parser-lalr.y b/src/grammar/parser-lalr.y
@@ -582,6 +582,14 @@ item_impl
 {
   $$ = mk_node("ItemImplNeg", 7, $1, $3, $5, $7, $8, $10, $11);
 }
+| maybe_unsafe IMPL generic_params trait_ref FOR DOTDOT '{' '}'
+{
+  $$ = mk_node("ItemImplDefault", 3, $1, $3, $4);
+}
+| maybe_unsafe IMPL generic_params '!' trait_ref FOR DOTDOT '{' '}'
+{
+  $$ = mk_node("ItemImplDefaultNeg", 3, $1, $3, $4);
+}
 ;
 
 maybe_impl_items

Original file line number	Diff line number	Diff line change
`@@ -582,6 +582,14 @@ item_impl`
`582`	`582`	`{`
`583`	`583`	`$$ = mk_node("ItemImplNeg", 7, $1, $3, $5, $7, $8, $10, $11);`
`584`	`584`	`}`
	`585`	`+\| maybe_unsafe IMPL generic_params trait_ref FOR DOTDOT '{' '}'`
	`586`	`+{`
	`587`	`+ $$ = mk_node("ItemImplDefault", 3, $1, $3, $4);`
	`588`	`+}`
	`589`	`+\| maybe_unsafe IMPL generic_params '!' trait_ref FOR DOTDOT '{' '}'`
	`590`	`+{`
	`591`	`+ $$ = mk_node("ItemImplDefaultNeg", 3, $1, $3, $4);`
	`592`	`+}`
`585`	`593`	`;`
`586`	`594`
`587`	`595`	`maybe_impl_items`