add depends_on syntax

1 files changed, 31 insertions, 0 deletions

diff --git a/lib/dslkeywords/resource.rb b/lib/dslkeywords/resource.rb
new file mode 100644
index 0000000..6612428
--- /dev/null
+++ b/lib/dslkeywords/resource.rb
@@ -0,0 +1,31 @@
+require_relative 'keyword'
+
+module RCM
+  # To track recource dependencies
+  module Dependency
+    # Only to have the resourcename[id] syntax available in the DSL
+    class SyntaxSugar
+      def initialize(name)
+        @name = name
+      end
+
+      def [](other) = "#{@name}['#{other}']"
+    end
+
+    def method_missing(method_name) = SyntaxSugar.new(method_name)
+    def respond_to_missing? = true
+
+    def depends_on(*others)
+      @depends_on = {} if @depends_on.nil?
+      others.each do |other|
+        info "Registered dependency on #{other}"
+        @depends_on[other] = {}
+      end
+    end
+  end
+
+  # A resource is something concrete to be managed, e.g. a file, or a CRON job.
+  class Resource < Keyword
+    include Dependency
+  end
+end