RSTRING_PTR returns raw char* instead of string

Author: sue445

_tools/ruby_h_to_go/lib/ruby_header_parser/parser.rb

@@ -265,7 +265,7 @@ def create_typeref(definition:, function_name:, typeref_field:, filepath:, line_
       typeref_pointer = nil
       if typeref_type.match?(/\*+$/)
         typeref_type = typeref_type.gsub(/\*+$/, "").strip
-        typeref_pointer = :ref
+        typeref_pointer = data.function_self_pointer_hint(function_name)
       end
 
       TyperefDefinition.new(type: typeref_type, pointer: typeref_pointer)

_tools/ruby_h_to_go/spec/ruby_header_parser/parser_spec.rb

@@ -301,6 +301,21 @@
       its(:typeref)    { should eq typeref(type: "VALUE") }
       its(:args)       { should eq args }
     end
+
+    context "RSTRING_PTR" do
+      subject { definitions.find { |d| d.name == "RSTRING_PTR" } }
+
+      let(:args) do
+        [
+          argument(type: "VALUE", name: "str"),
+        ]
+      end
+
+      its(:name)       { should eq "RSTRING_PTR" }
+      its(:definition) { should eq "RSTRING_PTR(VALUE str)" }
+      its(:typeref)    { should eq typeref(type: "char", pointer: :raw) }
+      its(:args)       { should eq args }
+    end
   end
 
   describe "#extract_struct_definitions" do