Fixed error with Rice 4.5

Author: ankane

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.19.1 (unreleased)
+
+- Fixed error with Rice 4.5
+
 ## 0.19.0 (2025-01-29)
 
 - Updated LibTorch to 2.6.0

ext/torch/templates.h

@@ -66,6 +66,11 @@ namespace Rice::detail
   class From_Ruby<c10::complex<T>>
   {
   public:
+    Convertible is_convertible(VALUE value)
+    {
+      return Convertible::Cast;
+    }
+
     c10::complex<T> convert(VALUE x)
     {
       VALUE real = rb_funcall(x, rb_intern("real"), 0);
@@ -90,6 +95,11 @@ namespace Rice::detail
   class From_Ruby<FanModeType>
   {
   public:
+    Convertible is_convertible(VALUE value)
+    {
+      return Convertible::Cast;
+    }
+
     FanModeType convert(VALUE x)
     {
       auto s = String(x).str();
@@ -116,6 +126,11 @@ namespace Rice::detail
   class From_Ruby<NonlinearityType>
   {
   public:
+    Convertible is_convertible(VALUE value)
+    {
+      return Convertible::Cast;
+    }
+
     NonlinearityType convert(VALUE x)
     {
       auto s = String(x).str();
@@ -160,6 +175,11 @@ namespace Rice::detail
   class From_Ruby<Scalar>
   {
   public:
+    Convertible is_convertible(VALUE value)
+    {
+      return Convertible::Cast;
+    }
+
     Scalar convert(VALUE x)
     {
       if (FIXNUM_P(x)) {

ext/torch/torch.cpp

@@ -21,7 +21,13 @@ torch::Tensor make_tensor(Rice::Array a, const std::vector<int64_t> &size, const
 }
 
 void init_torch(Rice::Module& m) {
-  register_handler<torch::Error>(handle_global_error);
+  Rice::detail::Registries::instance.handlers.set([]() {
+    try {
+      throw;
+    } catch (const torch::Error& ex) {
+      handle_global_error(ex);
+    }
+  });
   add_torch_functions(m);
   m.define_singleton_function(
       "grad_enabled?",

torch-rb.gemspec

@@ -16,5 +16,5 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = ">= 3.1"
 
-  spec.add_dependency "rice", ">= 4.3.3"
+  spec.add_dependency "rice", ">= 4.5"
 end