From c23a5678ee89d86b5a57fc65633e3770b6fd6d23 Mon Sep 17 00:00:00 2001
From: Leigh McCulloch <351529+leighmcculloch@users.noreply.github.com>
Date: Tue, 20 May 2025 09:03:03 +1000
Subject: [PATCH 1/2] validate source paths before compilation

---
 lib/xdrgen/compilation.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/xdrgen/compilation.rb b/lib/xdrgen/compilation.rb
index 24d260793..6443b5a80 100644
--- a/lib/xdrgen/compilation.rb
+++ b/lib/xdrgen/compilation.rb
@@ -3,6 +3,7 @@ class Compilation
     extend Memoist
 
     def initialize(source_paths, output_dir:".", language: :ruby, generator: nil, namespace: nil, options: {})
+      raise "An empty list of source paths (.x files) provided. At least one source file must be provided to compile." if source_paths.empty?
       @source_paths = source_paths
       @output_dir  = output_dir
       @namespace   = namespace

From 3bec1a2e15e53e08e1d0ff060fee55654a693274 Mon Sep 17 00:00:00 2001
From: Leigh McCulloch <351529+leighmcculloch@users.noreply.github.com>
Date: Tue, 20 May 2025 09:18:52 +1000
Subject: [PATCH 2/2] add spec for empty source paths validation

---
 spec/lib/xdrgen/compilation_spec.rb | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 spec/lib/xdrgen/compilation_spec.rb

diff --git a/spec/lib/xdrgen/compilation_spec.rb b/spec/lib/xdrgen/compilation_spec.rb
new file mode 100644
index 000000000..acafe365d
--- /dev/null
+++ b/spec/lib/xdrgen/compilation_spec.rb
@@ -0,0 +1,19 @@
+require 'spec_helper'
+
+describe Xdrgen::Compilation do
+  it "errors on empty list of source paths" do
+    expect {
+      Xdrgen::Compilation.new(
+        [], # Empty list of source paths
+        output_dir: "output_dir/",
+        generator: TestGenerator,
+        namespace: "namespace",
+        options: { option: true }
+      )
+    }.to raise_error(/empty list of source paths/)
+  end
+end
+
+class TestGenerator < Xdrgen::Generators::Base
+  def generate; end
+end