[gcc/devel/rust/master] Refactor to_string from header to impl file

[gcc/devel/rust/master] Refactor to_string from header to impl file

[Thomas Schwinge]

https://gcc.gnu.org/g:b7cdd81dbc7fe6e309825c883f9ccdcf108d26de

commit b7cdd81dbc7fe6e309825c883f9ccdcf108d26de
Author: Philip Herron <philip.herron@embecosm.com>
Date:   Mon Feb 7 17:47:48 2022 +0000

    Refactor to_string from header to impl file

Diff:
---
 gcc/rust/typecheck/rust-tyty.cc | 80 +++++++++++++++++++++++++++++++++++++++--
 gcc/rust/typecheck/rust-tyty.h  | 76 +--------------------------------------
 2 files changed, 78 insertions(+), 78 deletions(-)

diff --git a/gcc/rust/typecheck/rust-tyty.cc b/gcc/rust/typecheck/rust-tyty.cc
index 6a659239639..1f62aa5092a 100644
--- a/gcc/rust/typecheck/rust-tyty.cc
+++ b/gcc/rust/typecheck/rust-tyty.cc
@@ -30,12 +30,86 @@
 #include "rust-hir-trait-ref.h"
 #include "rust-hir-type-bounds.h"
 
-extern ::Backend *
-rust_get_backend ();
-
 namespace Rust {
 namespace TyTy {
 
+std::string
+TypeKindFormat::to_string (TypeKind kind)
+{
+  switch (kind)
+    {
+    case TypeKind::INFER:
+      return "Infer";
+
+    case TypeKind::ADT:
+      return "ADT";
+
+    case TypeKind::STR:
+      return "STR";
+
+    case TypeKind::REF:
+      return "REF";
+
+    case TypeKind::POINTER:
+      return "POINTER";
+
+    case TypeKind::PARAM:
+      return "PARAM";
+
+    case TypeKind::ARRAY:
+      return "ARRAY";
+
+    case TypeKind::FNDEF:
+      return "FnDef";
+
+    case TypeKind::FNPTR:
+      return "FnPtr";
+
+    case TypeKind::TUPLE:
+      return "Tuple";
+
+    case TypeKind::BOOL:
+      return "Bool";
+
+    case TypeKind::CHAR:
+      return "Char";
+
+    case TypeKind::INT:
+      return "Int";
+
+    case TypeKind::UINT:
+      return "Uint";
+
+    case TypeKind::FLOAT:
+      return "Float";
+
+    case TypeKind::USIZE:
+      return "Usize";
+
+    case TypeKind::ISIZE:
+      return "Isize";
+
+    case TypeKind::NEVER:
+      return "Never";
+
+    case TypeKind::PLACEHOLDER:
+      return "Placeholder";
+
+    case TypeKind::PROJECTION:
+      return "Projection";
+
+    case TypeKind::DYNAMIC:
+      return "Dynamic";
+
+    case TypeKind::CLOSURE:
+      return "Closure";
+
+    case TypeKind::ERROR:
+      return "ERROR";
+    }
+  gcc_unreachable ();
+}
+
 bool
 BaseType::satisfies_bound (const TypeBoundPredicate &predicate) const
 {
diff --git a/gcc/rust/typecheck/rust-tyty.h b/gcc/rust/typecheck/rust-tyty.h
index 6c9daf73cae..1362a961f60 100644
--- a/gcc/rust/typecheck/rust-tyty.h
+++ b/gcc/rust/typecheck/rust-tyty.h
@@ -69,81 +69,7 @@ enum TypeKind
 class TypeKindFormat
 {
 public:
-  static std::string to_string (TypeKind kind)
-  {
-    switch (kind)
-      {
-      case TypeKind::INFER:
-	return "Infer";
-
-      case TypeKind::ADT:
-	return "ADT";
-
-      case TypeKind::STR:
-	return "STR";
-
-      case TypeKind::REF:
-	return "REF";
-
-      case TypeKind::POINTER:
-	return "POINTER";
-
-      case TypeKind::PARAM:
-	return "PARAM";
-
-      case TypeKind::ARRAY:
-	return "ARRAY";
-
-      case TypeKind::FNDEF:
-	return "FnDef";
-
-      case TypeKind::FNPTR:
-	return "FnPtr";
-
-      case TypeKind::TUPLE:
-	return "Tuple";
-
-      case TypeKind::BOOL:
-	return "Bool";
-
-      case TypeKind::CHAR:
-	return "Char";
-
-      case TypeKind::INT:
-	return "Int";
-
-      case TypeKind::UINT:
-	return "Uint";
-
-      case TypeKind::FLOAT:
-	return "Float";
-
-      case TypeKind::USIZE:
-	return "Usize";
-
-      case TypeKind::ISIZE:
-	return "Isize";
-
-      case TypeKind::NEVER:
-	return "Never";
-
-      case TypeKind::PLACEHOLDER:
-	return "Placeholder";
-
-      case TypeKind::PROJECTION:
-	return "Projection";
-
-      case TypeKind::DYNAMIC:
-	return "Dynamic";
-
-      case TypeKind::CLOSURE:
-	return "Closure";
-
-      case TypeKind::ERROR:
-	return "ERROR";
-      }
-    gcc_unreachable ();
-  }
+  static std::string to_string (TypeKind kind);
 };
 
 class BaseType;