[gcc r14-8596] gccrs: HIR: add missing getters

[Arthur Cohen <cohenarthur@gcc.gnu.org>]

https://gcc.gnu.org/g:cc9465332ebcabebb04b95549989d74a8f1c0ce6

commit r14-8596-gcc9465332ebcabebb04b95549989d74a8f1c0ce6
Author: Jakub Dupak <dev@jakubdupak.com>
Date:   Sun Dec 3 11:07:04 2023 +0100

    gccrs: HIR: add missing getters
    
    gcc/rust/ChangeLog:
    
            * hir/tree/rust-hir-item.h: Ad lifetime getter.
            * hir/tree/rust-hir-path.h: Make getter const ref.
            * hir/tree/rust-hir.h: Const ref and new getter.
    
    Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

Diff:
---
 gcc/rust/hir/tree/rust-hir-item.h | 2 ++
 gcc/rust/hir/tree/rust-hir-path.h | 4 ++++
 gcc/rust/hir/tree/rust-hir.h      | 7 ++++++-
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/gcc/rust/hir/tree/rust-hir-item.h b/gcc/rust/hir/tree/rust-hir-item.h
index f72d8c8b0501..74450786e89a 100644
--- a/gcc/rust/hir/tree/rust-hir-item.h
+++ b/gcc/rust/hir/tree/rust-hir-item.h
@@ -443,6 +443,8 @@ public:
   // Returns whether the self-param has a valid lifetime.
   bool has_lifetime () const { return !lifetime.is_error (); }
 
+  const Lifetime &get_lifetime () const { return lifetime; }
+
   // Returns whether the self-param is in an error state.
   bool is_error () const { return self_kind == ImplicitSelfKind::NONE; }
 
diff --git a/gcc/rust/hir/tree/rust-hir-path.h b/gcc/rust/hir/tree/rust-hir-path.h
index 9fe126a56a8d..0566e2e2a1cb 100644
--- a/gcc/rust/hir/tree/rust-hir-path.h
+++ b/gcc/rust/hir/tree/rust-hir-path.h
@@ -218,6 +218,10 @@ public:
   std::string as_string () const;
 
   std::vector<Lifetime> &get_lifetime_args () { return lifetime_args; }
+  const std::vector<Lifetime> &get_lifetime_args () const
+  {
+    return lifetime_args;
+  }
 
   std::vector<std::unique_ptr<Type> > &get_type_args () { return type_args; }
 
diff --git a/gcc/rust/hir/tree/rust-hir.h b/gcc/rust/hir/tree/rust-hir.h
index 0f2d52256d2f..f66f53fbd204 100644
--- a/gcc/rust/hir/tree/rust-hir.h
+++ b/gcc/rust/hir/tree/rust-hir.h
@@ -572,7 +572,10 @@ public:
 
   void accept_vis (HIRFullVisitor &vis) override;
 
-  std::string get_name () const { return lifetime_name; }
+  WARN_UNUSED_RESULT const std::string &get_name () const
+  {
+    return lifetime_name;
+  }
 
   AST::Lifetime::LifetimeType get_lifetime_type () const
   {
@@ -662,6 +665,8 @@ public:
   // Returns whether the lifetime param has any lifetime bounds.
   bool has_lifetime_bounds () const { return !lifetime_bounds.empty (); }
 
+  std::vector<Lifetime> &get_lifetime_bounds () { return lifetime_bounds; }
+
   // Returns whether the lifetime param has an outer attribute.
   bool has_outer_attribute () const { return !outer_attr.is_empty (); }