[gcc r14-7424] gccrs: ast: Add AltPattern TokenStream visitor

[Arthur Cohen]

https://gcc.gnu.org/g:547a27922a63b2add2bff6bd6807470df039cc6b

commit r14-7424-g547a27922a63b2add2bff6bd6807470df039cc6b
Author: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
Date:   Thu Mar 23 19:30:51 2023 +0100

    gccrs: ast: Add AltPattern TokenStream visitor
    
    Add TokenStream visitor implementation for AltPattern.
    
    gcc/rust/ChangeLog:
    
            * ast/rust-ast-tokenstream.cc (TokenStream::visit): Add visitor.
    
    Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Diff:
---
 gcc/rust/ast/rust-ast-tokenstream.cc | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/gcc/rust/ast/rust-ast-tokenstream.cc b/gcc/rust/ast/rust-ast-tokenstream.cc
index 1bc1cab58c0..ca64dd21d47 100644
--- a/gcc/rust/ast/rust-ast-tokenstream.cc
+++ b/gcc/rust/ast/rust-ast-tokenstream.cc
@@ -2525,8 +2525,10 @@ TokenStream::visit (SlicePattern &pattern)
 }
 
 void
-TokenStream::visit (AltPattern &)
-{}
+TokenStream::visit (AltPattern &pattern)
+{
+  visit_items_as_lines (pattern.get_alts ());
+}
 
 // rust-stmt.h
 void