`service add` can be specified token providers.

src/service.cr

@@ -49,7 +49,37 @@ begin
 	if args[0] == "help"
 		puts parser
 	elsif args[0] == "add"
-		Service.new(args[1], args[2]?).write RC_DIRECTORY
+		environment : String? = nil
+		providers = Hash(String, String).new
+
+		args.each_with_index do |arg, i|
+			next if i == 0
+
+			match = arg.match /(.*)=(.*)/
+
+			if match.nil?
+				# FIXME: Check environment is not defined already.
+				environment = arg
+				next
+			end
+
+			providers[match[1]] = match[2]
+		end
+
+		Service.new(args[1], environment).tap do |service|
+			service.consumes.each do |token|
+				provider = providers[token.token]?
+
+				if provider.nil?
+					STDERR.puts "This service consumes a “#{token.token}” token, but you have not specified what other service is supposed to provide it."
+					STDERR.puts "Use the `service add #{args[1]} #{token.token}=<provider>` syntax to specify it."
+					exit 1
+				end
+
+				service.providers[token.token] = provider
+			end
+			pp! service.providers
+		end.write RC_DIRECTORY
 	elsif args[0] == "del"
 		Service.new(args[1], args[2]?).remove RC_DIRECTORY
 	elsif args[0] == "start"

src/service/service.cr

@@ -17,7 +17,6 @@ end
 class Service
 	getter environment : Environment
 	getter providers = ProvidersList.new
-	getter consumed_tokens = Array(Consumer).new
 
 	class Exception < ::Exception
 	end
@@ -35,17 +34,13 @@ class Service
 		end
 	end
 
-	def initialize(name, environment_name : String?, @consumed_tokens = [] of Consumer)
+	def initialize(name, environment_name : String?)
 		@reference = ServiceDefinition.get name
 		@environment = if environment_name.nil? || environment_name == ""
 			Environment.root
 		else
 			Environment.get environment_name
 		end
-
-		@consumed_tokens.each do |consume|
-			@providers[consume.token] = consume.from
-		end
 	end
 
 	def initialize(specs : Specs)
@@ -61,7 +56,7 @@ class Service
 		end
 
 		specs.sections.select(&.name.==("consumes")).each do |section|
-			@consumed_tokens << Consumer.new section.options[0], section.content["from"].as_s
+			@providers[section.name] = section.content["from"].as_s
 		end
 	end
 
@@ -72,9 +67,9 @@ class Service
 			# FIXME: consumed tokens are missing.
 		]
 
-		@consumed_tokens.each do |token|
-			file << "%consumes #{token.token}"
-			file << "    from: #{token.from}"
+		@providers.each do |token, provider|
+			file << "%consumes #{token}"
+			file << "    from: #{provider}"
 		end
 
 		file.join("\n") + "\n"
@@ -104,6 +99,9 @@ class Service
 	def provides
 		@reference.provides
 	end
+	def consumes
+		@reference.consumes
+	end
 
 	private def build_environment
 		env = {} of String => String
@@ -343,8 +341,8 @@ class Service
 	def dependency_tree
 		tree = [self] of ServiceTree
 
-		@consumed_tokens.each do |token|
-			service = Service.get_by_id token.from
+		@providers.each do |token, provider_id|
+			service = Service.get_by_id provider_id
 
 			unless service
 				# FIXME: Does it make the dep tree invalid?