From: Jakub Dupak <dev@jakubdupak.com>
gcc/rust/ChangeLog:
* parse/rust-parse-impl.h (Parser::parse_where_clause): fix parsing
(Parser::parse_where_clause_item): fix parsing
(Parser::parse_type_bound_where_clause_item): fix parsing
(Parser::parse_trait_bound): fix parsing
* parse/rust-parse.h: fix parsing
Signed-off-by: Jakub Dupak <dev@jakubdupak.com>
---
gcc/rust/parse/rust-parse-impl.h | 37 ++++++++++++++++++++------------
gcc/rust/parse/rust-parse.h | 6 ++++--
2 files changed, 27 insertions(+), 16 deletions(-)
@@ -3756,6 +3756,10 @@ Parser<ManagedTokenSource>::parse_where_clause ()
* so won't be here */
std::vector<std::unique_ptr<AST::WhereClauseItem>> where_clause_items;
+ std::vector<AST::LifetimeParam> for_lifetimes;
+ if (lexer.peek_token ()->get_id () == FOR)
+ for_lifetimes = parse_for_lifetimes ();
+
/* HACK: where clauses end with a right curly or semicolon or equals in all
* uses currently */
const_TokenPtr t = lexer.peek_token ();
@@ -3763,7 +3767,7 @@ Parser<ManagedTokenSource>::parse_where_clause ()
&& t->get_id () != EQUAL)
{
std::unique_ptr<AST::WhereClauseItem> where_clause_item
- = parse_where_clause_item ();
+ = parse_where_clause_item (for_lifetimes);
if (where_clause_item == nullptr)
{
@@ -3791,7 +3795,8 @@ Parser<ManagedTokenSource>::parse_where_clause ()
* commas. */
template <typename ManagedTokenSource>
std::unique_ptr<AST::WhereClauseItem>
-Parser<ManagedTokenSource>::parse_where_clause_item ()
+Parser<ManagedTokenSource>::parse_where_clause_item (
+ const std::vector<AST::LifetimeParam> &outer_for_lifetimes)
{
// shitty cheat way of determining lifetime or type bound - test for
// lifetime
@@ -3800,7 +3805,7 @@ Parser<ManagedTokenSource>::parse_where_clause_item ()
if (t->get_id () == LIFETIME)
return parse_lifetime_where_clause_item ();
else
- return parse_type_bound_where_clause_item ();
+ return parse_type_bound_where_clause_item (outer_for_lifetimes);
}
// Parses a lifetime where clause item.
@@ -3834,12 +3839,10 @@ Parser<ManagedTokenSource>::parse_lifetime_where_clause_item ()
// Parses a type bound where clause item.
template <typename ManagedTokenSource>
std::unique_ptr<AST::TypeBoundWhereClauseItem>
-Parser<ManagedTokenSource>::parse_type_bound_where_clause_item ()
+Parser<ManagedTokenSource>::parse_type_bound_where_clause_item (
+ const std::vector<AST::LifetimeParam> &outer_for_lifetimes)
{
- // parse for lifetimes, if it exists
- std::vector<AST::LifetimeParam> for_lifetimes;
- if (lexer.peek_token ()->get_id () == FOR)
- for_lifetimes = parse_for_lifetimes ();
+ std::vector<AST::LifetimeParam> for_lifetimes = outer_for_lifetimes;
std::unique_ptr<AST::Type> type = parse_type ();
if (type == nullptr)
@@ -3853,6 +3856,13 @@ Parser<ManagedTokenSource>::parse_type_bound_where_clause_item ()
return nullptr;
}
+ if (lexer.peek_token ()->get_id () == FOR)
+ {
+ auto for_lifetimes_inner = parse_for_lifetimes ();
+ for_lifetimes.insert (for_lifetimes.end (), for_lifetimes_inner.begin (),
+ for_lifetimes_inner.end ());
+ }
+
// parse type param bounds if they exist
std::vector<std::unique_ptr<AST::TypeParamBound>> type_param_bounds
= parse_type_param_bounds ();
@@ -4029,6 +4039,11 @@ Parser<ManagedTokenSource>::parse_trait_bound ()
location_t locus = lexer.peek_token ()->get_locus ();
+ /* parse optional `for lifetimes`. */
+ std::vector<AST::LifetimeParam> for_lifetimes;
+ if (lexer.peek_token ()->get_id () == FOR)
+ for_lifetimes = parse_for_lifetimes ();
+
// handle trait bound being in parentheses
if (lexer.peek_token ()->get_id () == LEFT_PAREN)
{
@@ -4043,12 +4058,6 @@ Parser<ManagedTokenSource>::parse_trait_bound ()
lexer.skip_token ();
}
- /* parse for lifetimes, if it exists (although empty for lifetimes is ok to
- * handle this) */
- std::vector<AST::LifetimeParam> for_lifetimes;
- if (lexer.peek_token ()->get_id () == FOR)
- for_lifetimes = parse_for_lifetimes ();
-
// handle TypePath
AST::TypePath type_path = parse_type_path ();
@@ -288,11 +288,13 @@ private:
std::unique_ptr<AST::Param> parse_function_param ();
std::unique_ptr<AST::Type> parse_function_return_type ();
AST::WhereClause parse_where_clause ();
- std::unique_ptr<AST::WhereClauseItem> parse_where_clause_item ();
+ std::unique_ptr<AST::WhereClauseItem> parse_where_clause_item (
+ const std::vector<AST::LifetimeParam> &global_for_lifetimes);
std::unique_ptr<AST::LifetimeWhereClauseItem>
parse_lifetime_where_clause_item ();
std::unique_ptr<AST::TypeBoundWhereClauseItem>
- parse_type_bound_where_clause_item ();
+ parse_type_bound_where_clause_item (
+ const std::vector<AST::LifetimeParam> &global_for_lifetimes);
std::vector<AST::LifetimeParam> parse_for_lifetimes ();
template <typename EndTokenPred>
std::vector<std::unique_ptr<AST::TypeParamBound>>