From: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
Date: Sat, 5 Apr 2025 23:44:18 +0000 (+0200)
Subject: gccrs: Add hash function for Identifiers
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a65c3b497fd0ca28f35cb7e63f5a1ce95baff8ad;p=thirdparty%2Fgcc.git

gccrs: Add hash function for Identifiers

gcc/rust/ChangeLog:

	* ast/rust-ast.h: Add hash function.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
---

diff --git a/gcc/rust/ast/rust-ast.h b/gcc/rust/ast/rust-ast.h
index 94585dc1344..aa6ad5066aa 100644
--- a/gcc/rust/ast/rust-ast.h
+++ b/gcc/rust/ast/rust-ast.h
@@ -2102,6 +2102,19 @@ template <> struct less<Rust::Identifier>
     return lhs.as_string () < rhs.as_string ();
   }
 };
+
+template <> struct hash<Rust::Identifier>
+{
+  std::size_t operator() (const Rust::Identifier &k) const
+  {
+    using std::hash;
+    using std::size_t;
+    using std::string;
+
+    return hash<string> () (k.as_string ()) ^ (hash<int> () (k.get_locus ()));
+  }
+};
+
 } // namespace std
 
 #endif