fix (#11)

README.md

@@ -5,11 +5,11 @@ interface-implements
 
 ![](https://github.com/itsumura-h/nim-interface-implements/workflows/Build%20and%20test%20Nim/badge.svg)
 
-There are two ways to achieve polymorphism in Nim. One is to create `tuple` and another is `dynamic dispatch`.
+There are two ways to achieve polymorphism in Nim. One is to create `toInterface converter` and another is `dynamic dispatch`.
 
 **tuple**
 ```nim
-type IRepository* = tuple
+type IRepository* = object
   exec: proc(msg:string):string
 ```
 
@@ -20,7 +20,7 @@ proc exec(self:Repository, msg:string):string =
   return &"Repository {msg}"
 
 converter toInterface*(self:Repository):IRepository =
-  return (
+  return IRepository(
     exec: proc(msg:string):string = self.exec(msg)
   )
 ```
@@ -68,7 +68,7 @@ proc func2(self:Repository, number:int):string =
   return "Repository2 " & $number
 
 converter toInterface*(self:Repository):IRepository =
-  return (
+  return IRepository(
     func1: proc(msg:string):string = self.func1(msg),
     func2: proc(number:int):string = self.func2(number)
   )
@@ -82,7 +82,7 @@ macro implements*(implName, interfaceName, procs:untyped):untyped
 ### Example
 repository_interface.nim
 ```nim
-type IRepository* = tuple
+type IRepository* = object
   exec: proc(msg:string):string
 ```
 
@@ -91,7 +91,7 @@ mock_repository.nim
 import interface_implements
 import ./repository_interface
 
-type MockRepository = ref object
+type MockRepository = object
 
 proc newMockRepository*():MockRepository =
   return MockRepository()
@@ -106,7 +106,7 @@ repository.nim
 import interface_implements
 import ./repository_interface
 
-type Repository = ref object
+type Repository = object
 
 proc newRepository*():Repository =
   return Repository()
@@ -120,7 +120,7 @@ usecase.nim
 ```nim
 import ./repository_interface
 
-type Usecase = ref object
+type Usecase = object
   repository: IRepository
 
 func newUsecase*(repository:IRepository):Usecase =

interface_implements.nimble

@@ -1,6 +1,6 @@
 # Package
 
-version       = "0.2.5"
+version       = "0.2.6"
 author        = "dumblepy"
 description   = "Creating toInterface macro."
 license       = "MIT"

src/interface_implements.nim

@@ -11,7 +11,7 @@ macro implements*(implName, interfaceName, procs:untyped):untyped =
     let procName = aProc[0]
     let procImpl = aProc[3]
     if procName.repr.contains("*"):
-      raise newException(Exception, "procedure in interface must be private.")
+      raise newException(Exception, "procedure in implementation must be private.")
     let returnType = if procImpl[0].repr.len > 0: ":" & procImpl[0].repr else: ""
     for arg in procImpl[2..^1]:
       let argName = arg[0].repr
@@ -26,14 +26,16 @@ macro implements*(implName, interfaceName, procs:untyped):untyped =
   let resultStr =
     if tuples.len == 0:
      fmt"""converter toInterface*(self:{implName.repr}):{interfaceName.repr} =
-  return ()
+  return {interfaceName.repr}()
 """
     else:
       fmt"""converter toInterface*(self:{implName.repr}):{interfaceName.repr} =
-  return (
+  return {interfaceName.repr}(
 {tuples}
   )
 """
+  # echo ""
+  # echo (procsStr & '\n' & resultStr)
   return (procsStr & '\n' & resultStr).parseStmt
 
 # ================================================================================
@@ -76,5 +78,5 @@ when NimMajor >= 2:
         methods.add(methodRow)
       let interfaceStr = if i == 0: &"type {interfaceDef}\n" else: &"\ntype {interfaceDef}\n"
       res.add(interfaceStr & methods.join("\n") & "\n" )
-    when not defined(release): echo res
+    # echo res
     return parseStmt(res)

tests/interface_implements/mock_repository.nim

@@ -1,8 +1,8 @@
-import strformat
-import repository_interface
+import std/strformat
+import ./repository_interface
 import ../../src/interface_implements
 
-type MockRepository* = ref object
+type MockRepository* = object
 
 proc new*(_:type MockRepository):MockRepository =
   return MockRepository()

tests/interface_implements/repository.nim

@@ -2,7 +2,7 @@ import strformat
 import ./repository_interface
 import ../../src/interface_implements
 
-type Repository* = ref object
+type Repository* = object
 
 proc new*(_:type Repository):Repository =
   return Repository()

tests/interface_implements/repository_interface.nim

@@ -1,2 +1,2 @@
-type IRepository* = tuple
-  exec: proc(msg:string):string
+type IRepository* = object
+  exec*: proc(msg:string):string

tests/interface_implements/usecase.nim

@@ -1,6 +1,6 @@
-import repository_interface
+import ./repository_interface
 
-type Usecase* = ref object
+type Usecase* = object
   repository: IRepository
 
 func new*(_:type Usecase, repository:IRepository):Usecase =