Add types in methods definitions

Author: n-rodriguez

src/ucl.cr

@@ -3,11 +3,11 @@ require "./ucl/*"
 module UCL
   VERSION = "0.1.0"
 
-  def self.load(string)
+  def self.load(string : String) : UCL::Value::Type
     Decoder.decode(string)
   end
 
-  def self.dump(object, emit_type = Encoder::DEFAULT_EMITTER)
+  def self.dump(object, emit_type = Encoder::DEFAULT_EMITTER) : String
     Encoder.encode(object, emit_type)
   end
 end

src/ucl/decoder.cr

@@ -1,6 +1,6 @@
 module UCL
   class Decoder
-    def self.decode(string)
+    def self.decode(string : String) : UCL::Value::Type
       object = UCL::Parser.parse(string)
       from_ucl_object(object)
     end

src/ucl/encoder.cr

@@ -11,7 +11,7 @@ module UCL
 
     DEFAULT_EMITTER = "config"
 
-    def self.encode(object, emit_type = DEFAULT_EMITTER)
+    def self.encode(object, emit_type = DEFAULT_EMITTER) : String
       emitter = EMITTERS[emit_type]?
       raise UCL::Error::EncoderError.new("Unknown emitter format: #{emit_type}") if emitter.nil?
 

src/ucl/parser.cr

@@ -1,6 +1,6 @@
 module UCL
   class Parser
-    def self.parse(string)
+    def self.parse(string : String)
       parser = new
       parser.parse(string)
     end
@@ -13,7 +13,7 @@ module UCL
       @parser = UCL::LibUCL.new(flags)
     end
 
-    def parse(string)
+    def parse(string : String)
       load_string(string)
       check_error
       load_result