Ensure exception classes defined on-load in Rust

Author: taylorthurlow

ext/rust_json_schema/src/lib.rs

@@ -97,5 +97,9 @@ fn init(ruby: &Ruby) -> Result<(), magnus::Error> {
     class.define_method("valid?", method!(Validator::is_valid, 1))?;
     class.define_method("validate", method!(Validator::validate, 1))?;
 
+    // Ensure defined at load time
+    Lazy::force(&JSON_PARSE_ERROR, ruby);
+    Lazy::force(&SCHEMA_PARSE_ERROR, ruby);
+
     Ok(())
 }

lib/rust_json_schema.rb

@@ -2,18 +2,18 @@
 
 require_relative "rust_json_schema/version"
 
-# Tries to require the extension for the given Ruby version first
-begin
-  RUBY_VERSION =~ /(\d+\.\d+)/
-  require "rust_json_schema/#{Regexp.last_match(1)}/rust_json_schema"
-rescue LoadError
-  require_relative "rust_json_schema/rust_json_schema"
-end
-
 module RustJSONSchema
   class Error < StandardError; end
 
   class JSONParseError < Error; end
 
   class SchemaParseError < Error; end
 end
+
+# Tries to require the extension for the given Ruby version first
+begin
+  RUBY_VERSION =~ /(\d+\.\d+)/
+  require "rust_json_schema/#{Regexp.last_match(1)}/rust_json_schema"
+rescue LoadError
+  require_relative "rust_json_schema/rust_json_schema"
+end