Ruby CLI: Add --action-view-helpers flag for Action View Helpers (#1428)

This pull request adds a new `--action-view-helpers` CLI flag to the
Ruby CLI that passes along the `action_view_helpers: true` parser option
to `Herb.parse`.

Author: marcoroth

lib/herb/cli.rb

@@ -8,7 +8,7 @@
 class Herb::CLI
   include Herb::Colors
 
-  attr_accessor :json, :silent, :log_file, :no_timing, :local, :escape, :no_escape, :freeze, :debug, :tool, :strict, :analyze, :track_whitespace, :verbose, :isolate, :arena_stats, :leak_check
+  attr_accessor :json, :silent, :log_file, :no_timing, :local, :escape, :no_escape, :freeze, :debug, :tool, :strict, :analyze, :track_whitespace, :verbose, :isolate, :arena_stats, :leak_check, :action_view_helpers
 
   def initialize(args)
     @args = args
@@ -160,7 +160,7 @@ def result
                   show_config
                   exit(0)
                 when "parse"
-                  Herb.parse(file_content, strict: strict.nil? || strict, analyze: analyze.nil? || analyze, track_whitespace: track_whitespace || false, arena_stats: arena_stats)
+                  Herb.parse(file_content, strict: strict.nil? || strict, analyze: analyze.nil? || analyze, track_whitespace: track_whitespace || false, arena_stats: arena_stats, action_view_helpers: action_view_helpers || false)
                 when "compile"
                   compile_template
                 when "render"
@@ -298,6 +298,10 @@ def option_parser
         self.track_whitespace = true
       end
 
+      parser.on("--action-view-helpers", "Enable Action View helper detection (for parse command) (default: false)") do
+        self.action_view_helpers = true
+      end
+
       parser.on("--tool TOOL", "Show config for specific tool: linter, formatter (for config command)") do |t|
         self.tool = t.to_sym
       end