Revert "Add error handling for missing railroad_diagrams gem" and mov…

…e to add_runtime_dependency

This reverts commit 91c5879.

Gemfile

@@ -12,7 +12,6 @@ gem "rspec"
 gem "simplecov", require: false
 gem "stackprof", platforms: [:ruby] # stackprof doesn't support Windows
 gem "memory_profiler"
-gem "railroad_diagrams", "0.2.1"
 
 # Recent steep requires Ruby >= 3.0.0.
 # Then skip install on some CI jobs.

lib/lrama/diagram.rb

@@ -1,19 +1,14 @@
 # frozen_string_literal: true
 
 require "erb"
-begin
-  require "railroad_diagrams"
-rescue LoadError
-  warn "railroad_diagrams is not installed. Please run `bundle install`."
-end
+require "railroad_diagrams"
 
 module Lrama
   class Diagram
     def initialize(out:, grammar:, template_name: 'diagram/diagram.html')
       @grammar = grammar
       @out = out
       @template_name = template_name
-      return unless defined?(RailroadDiagrams) # Skip rendering if railroad_diagrams is not installed
       RailroadDiagrams::TextDiagram.set_formatting(RailroadDiagrams::TextDiagram::PARTS_UNICODE)
     end
 
@@ -28,7 +23,6 @@ def self.erb(input)
     end
 
     def render
-      return unless defined?(RailroadDiagrams) # Skip rendering if railroad_diagrams is not installed
       @out << render_template(template_file)
     end
 

lrama.gemspec

@@ -28,4 +28,5 @@ Gem::Specification.new do |spec|
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
+  spec.add_runtime_dependency "railroad_diagrams", "0.2.1"
 end