ruby: add special Send node type for method calls

src/Language/Ruby/Assignment.hs

@@ -74,6 +74,7 @@ type Syntax = '[
   , Syntax.Identifier
   , Syntax.Paren
   , Syntax.Program
+  , Ruby.Syntax.Send
   , Ruby.Syntax.Class
   , Ruby.Syntax.Load
   , Ruby.Syntax.LowPrecedenceBoolean
@@ -83,7 +84,8 @@ type Syntax = '[
   ]
 
 type Term = Term.Term (Union Syntax) (Record Location)
-type Assignment = HasCallStack => Assignment.Assignment [] Grammar Term
+type Assignment' a = HasCallStack => Assignment.Assignment [] Grammar a
+type Assignment = Assignment' Term
 
 -- | Assignment from AST in Ruby’s grammar onto a program in Ruby’s syntax.
 assignment :: Assignment
@@ -291,9 +293,12 @@ pair :: Assignment
 pair =   makeTerm <$> symbol Pair <*> children (Literal.KeyValue <$> expression <*> (expression <|> emptyTerm))
 
 methodCall :: Assignment
-methodCall = makeTerm' <$> symbol MethodCall <*> children (require <|> load <|> regularCall)
+methodCall = makeTerm' <$> symbol MethodCall <*> children (require <|> load <|> funcCall <|> regularCall)
   where
-    regularCall = inj <$> (Expression.Call <$> pure [] <*> expression <*> args <*> (block <|> emptyTerm))
+    funcCall = inj <$> (Ruby.Syntax.Send Nothing <$> methodSelector <*> args) -- TODO block
+
+    regularCall = inj <$> (symbol Call *> children (Ruby.Syntax.Send <$> (Just <$> expression) <*> methodSelector) <*> args) -- TODO block
+
     require = inj <$> (symbol Identifier *> do
       s <- source
       guard (s `elem` ["require", "require_relative"])
@@ -306,10 +311,13 @@ methodCall = makeTerm' <$> symbol MethodCall <*> children (require <|> load <|>
     loadArgs = (symbol ArgumentList <|> symbol ArgumentListWithParens)  *> children (some expression)
     nameExpression = (symbol ArgumentList <|> symbol ArgumentListWithParens) *> children expression
 
-call :: Assignment
-call = makeTerm <$> symbol Call <*> children (Expression.MemberAccess <$> expression <*> (expression <|> args))
+methodSelector :: Assignment
+methodSelector = mk Identifier <|> mk Identifier'
   where
-    args = (symbol ArgumentList <|> symbol ArgumentListWithParens) *> children expressions
+    mk s = makeTerm <$> symbol s <*> (Syntax.Identifier <$> (name <$> source))
+
+call :: Assignment
+call = makeTerm <$> symbol Call <*> children (Ruby.Syntax.Send <$> (Just <$> expression) <*> methodSelector <*> pure [])
 
 rescue :: Assignment
 rescue =  rescue'

src/Language/Ruby/Syntax.hs

@@ -36,6 +36,16 @@ maybeFailNotFound name = maybeFail notFound
 cleanNameOrPath :: ByteString -> String
 cleanNameOrPath = BC.unpack . dropRelativePrefix . stripQuotes
 
+data Send a = Send { sendReceiver :: Maybe a, sendSelector :: a, sendArgs :: [a] }
+  deriving (Diffable, Eq, Foldable, Functor, GAlign, Generic1, Mergeable, Ord, Show, Traversable, FreeVariables1)
+
+instance Eq1 Send where liftEq = genericLiftEq
+instance Ord1 Send where liftCompare = genericLiftCompare
+instance Show1 Send where liftShowsPrec = genericLiftShowsPrec
+
+instance Evaluatable Send where
+  eval (Send _ _ _) = fail "send unimplemented!"
+
 data Require a = Require { requireRelative :: Bool, requirePath :: !a }
   deriving (Diffable, Eq, Foldable, Functor, GAlign, Generic1, Mergeable, Ord, Show, Traversable, FreeVariables1)