[gcc/devel/rust/master] ast: Implement TokenStream visitor for meta nodes

[gcc/devel/rust/master] ast: Implement TokenStream visitor for meta nodes

[Thomas Schwinge]

https://gcc.gnu.org/g:f0ed95a8b9758e172e5e3e945a393b6295037507

commit f0ed95a8b9758e172e5e3e945a393b6295037507
Author: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
Date:   Wed Mar 22 13:27:50 2023 +0100

    ast: Implement TokenStream visitor for meta nodes
    
    Implement TokenStream visitor on some Meta container nodes.
    
    gcc/rust/ChangeLog:
    
            * ast/rust-ast-tokenstream.cc (TokenStream::visit): Implement
            visitors.
    
    Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Diff:
---
 gcc/rust/ast/rust-ast-tokenstream.cc | 31 ++++++++++++++++++++++++-------
 1 file changed, 24 insertions(+), 7 deletions(-)

diff --git a/gcc/rust/ast/rust-ast-tokenstream.cc b/gcc/rust/ast/rust-ast-tokenstream.cc
index 92737fcece4..a7fee13a1ae 100644
--- a/gcc/rust/ast/rust-ast-tokenstream.cc
+++ b/gcc/rust/ast/rust-ast-tokenstream.cc
@@ -349,7 +349,12 @@ TokenStream::visit (DelimTokenTree &delim_tok_tree)
 
 void
 TokenStream::visit (AttrInputMetaItemContainer &container)
-{}
+{
+  for (auto &item : container.get_items ())
+    {
+      visit (item);
+    }
+}
 
 void
 TokenStream::visit (IdentifierExpr &ident_expr)
@@ -724,16 +729,28 @@ TokenStream::visit (LiteralExpr &expr)
 }
 
 void
-TokenStream::visit (AttrInputLiteral &)
-{}
+TokenStream::visit (AttrInputLiteral &literal)
+{
+  tokens.push_back (Rust::Token::make (EQUAL, Location ()));
+  visit (literal.get_literal ());
+}
 
 void
-TokenStream::visit (MetaItemLitExpr &)
-{}
+TokenStream::visit (MetaItemLitExpr &item)
+{
+  auto lit = item.get_literal ();
+  visit (lit);
+}
 
 void
-TokenStream::visit (MetaItemPathLit &)
-{}
+TokenStream::visit (MetaItemPathLit &item)
+{
+  auto path = item.get_path ();
+  auto lit = item.get_literal ();
+  visit (path);
+  tokens.push_back (Rust::Token::make (COLON, item.get_locus ()));
+  visit (lit);
+}
 
 void
 TokenStream::visit (BorrowExpr &expr)