From d0b4001221896f24e883207d9a888280ac68a9a3 Mon Sep 17 00:00:00 2001
From: Ewoud Kohl van Wijngaarden <ewoud@kohlvanwijngaarden.nl>
Date: Tue, 24 Jan 2023 16:54:18 +0100
Subject: [PATCH] Lazy load required classes

This allows requiring puppet-syntax without loading all of Puppet, which
helps speed up other rake commands.
---
 lib/puppet-syntax.rb           | 8 ++++----
 lib/puppet-syntax/manifests.rb | 1 +
 lib/puppet-syntax/templates.rb | 2 +-
 3 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/lib/puppet-syntax.rb b/lib/puppet-syntax.rb
index 9894654..03a0540 100644
--- a/lib/puppet-syntax.rb
+++ b/lib/puppet-syntax.rb
@@ -1,10 +1,10 @@
 require "puppet-syntax/version"
-require "puppet-syntax/manifests"
-require "puppet-syntax/templates"
-require "puppet-syntax/hiera"
-require "puppet/version"
 
 module PuppetSyntax
+  autoload :Hiera, 'puppet-syntax/hiera'
+  autoload :Manifests, 'puppet-syntax/manifests'
+  autoload :Templates, 'puppet-syntax/templates'
+
   @exclude_paths = []
   @hieradata_paths = [
     "**/data/**/*.*{yaml,yml}",
diff --git a/lib/puppet-syntax/manifests.rb b/lib/puppet-syntax/manifests.rb
index 58fe8a7..2dcf3e6 100644
--- a/lib/puppet-syntax/manifests.rb
+++ b/lib/puppet-syntax/manifests.rb
@@ -3,6 +3,7 @@ class Manifests
     def check(filelist)
       raise "Expected an array of files" unless filelist.is_a?(Array)
       require 'puppet'
+      require 'puppet/version'
       require 'puppet/face'
       require 'puppet/test/test_helper'
 
diff --git a/lib/puppet-syntax/templates.rb b/lib/puppet-syntax/templates.rb
index eb63f20..38c47df 100644
--- a/lib/puppet-syntax/templates.rb
+++ b/lib/puppet-syntax/templates.rb
@@ -1,5 +1,4 @@
 require 'erb'
-require 'puppet'
 require 'stringio'
 
 module PuppetSyntax
@@ -30,6 +29,7 @@ def check(filelist)
     end
 
     def validate_epp(filename)
+      require 'puppet/error'
       require 'puppet/pops'
       result = { warnings: [], errors: [] }
       formatter = Puppet::Pops::Validation::DiagnosticFormatterPuppetStyle.new