- No longer deleting type-vars in luxc, to better match it with the type-checking in new-luxc.

- Fixed some minor bugs and inconsistencies.

8 files changed, 124 insertions, 141 deletions

diff --git a/stdlib/source/lux/concurrency/actor.lux b/stdlib/source/lux/concurrency/actor.lux
index b326d0028..f91b3c57f 100644
--- a/stdlib/source/lux/concurrency/actor.lux
+++ b/stdlib/source/lux/concurrency/actor.lux
@@ -50,12 +50,9 @@
       {#.doc "Given a behavior and initial state, spawns an actor and returns it."}
       (All [s] (-> (Behavior s) s (IO (Actor s))))
       (io (let [[handle end] behavior
-                self (: (Actor ($ +0))
-                        (@abstract {#mailbox (stm.var (:! (Message ($ +0)) []))
-                                    #kill-switch (: (P.Promise Unit)
-                                                    (P.promise #.None))
-                                    #obituary (: (P.Promise (Obituary ($ +0)))
-                                                 (P.promise #.None))}))
+                self (@abstract {#mailbox (stm.var (:! Message []))
+                                 #kill-switch (P.promise #.None)
+                                 #obituary (P.promise #.None)})
                 mailbox-channel (io.run (stm.follow (get@ #mailbox (@repr self))))
                 |mailbox| (stm.var mailbox-channel)
                 _ (P/map (function [_]
diff --git a/stdlib/source/lux/concurrency/frp.lux b/stdlib/source/lux/concurrency/frp.lux
index 230eca335..533d2a7e5 100644
--- a/stdlib/source/lux/concurrency/frp.lux
+++ b/stdlib/source/lux/concurrency/frp.lux
@@ -20,11 +20,10 @@
   (&.Promise (Maybe [a (Channel a)])))
 
 ## [Syntax]
-(syntax: #export (channel [type s.any])
-  {#.doc (doc "Makes an uninitialized Channel (in this case, of Nat)."
-              (channel Nat))}
-  (wrap (list (` (: (Channel (~ type))
-                    (&.promise #.None))))))
+(syntax: #export (channel)
+  {#.doc (doc "Makes an uninitialized Channel."
+              (channel))}
+  (wrap (list (` (&.promise #.None)))))
 
 ## [Values]
 (def: #export (filter p xs)
@@ -44,7 +43,7 @@
     (^template [<case> <channel-to-write>]
       <case>
       (do Monad<IO>
-        [#let [new-tail (channel ($ +0))]
+        [#let [new-tail (channel)]
          done? (&.resolve (#.Some [value new-tail]) <channel-to-write>)]
         (if done?
           (wrap (#.Some new-tail))
@@ -97,7 +96,7 @@
 (def: #export (merge xss)
   {#.doc "Fuse all the elements in a list of channels by piping them onto a new output channel."}
   (All [a] (-> (List (Channel a)) (Channel a)))
-  (let [output (channel ($ +0))]
+  (let [output (channel)]
     (exec (do &.Monad<Promise>
             [_ (M.map @ (function [input] (pipe' input output)) xss)]
             (exec (io.run (close output))
@@ -293,7 +292,7 @@
       (wrap (#.Some [a (wrap #.None)]))))
 
   (def: (apply ff fa)
-    (let [fb (channel ($ +1))]
+    (let [fb (channel)]
       (exec (let [(^open) Functor<Channel>]
               (map (function [f] (pipe (map f fa) fb))
                    ff))
@@ -303,7 +302,7 @@
   (def: applicative Applicative<Channel>)
 
   (def: (join mma)
-    (let [output (channel ($ +0))]
+    (let [output (channel)]
       (exec (let [(^open) Functor<Channel>]
               (map (function [ma]
                      (pipe ma output))
diff --git a/stdlib/source/lux/concurrency/promise.lux b/stdlib/source/lux/concurrency/promise.lux
index 2de5fa2c8..d45e8e55a 100644
--- a/stdlib/source/lux/concurrency/promise.lux
+++ b/stdlib/source/lux/concurrency/promise.lux
@@ -1,16 +1,10 @@
 (.module:
   lux
-  (lux (data (coll [list #* "" Functor<List>])
-             number
-             text/format)
-       [io #- run]
-       function
-       (control ["F" functor]
-                ["A" applicative]
-                ["M" monad #+ do Monad]
-                ["p" parser])
-       [macro]
-       (macro ["s" syntax #+ syntax: Syntax])
+  (lux [io #+ IO io]
+       [function]
+       (control [functor #+ Functor]
+                [applicative #+ Applicative]
+                [monad #+ do Monad])
        (concurrency [atom #+ Atom atom])))
 
 (def: #export concurrency-level
@@ -31,14 +25,14 @@
          #observers (list)}))
 
 (def: #export (poll promise)
-  {#.doc "Polls a Promise's value."}
+  {#.doc "Polls a promise's value."}
   (All [a] (-> (Promise a) (Maybe a)))
   (|> (atom.read promise)
       io.run
       (get@ #value)))
 
 (def: #export (resolved? promise)
-  {#.doc "Checks whether a Promise's value has already been resolved."}
+  {#.doc "Checks whether a promise's value has already been resolved."}
   (All [a] (-> (Promise a) Bool))
   (case (poll promise)
     #.None
@@ -48,9 +42,9 @@
     true))
 
 (def: #export (resolve value promise)
-  {#.doc "Sets an Promise's value if it has not been done yet."}
+  {#.doc "Sets an promise's value if it has not been done yet."}
   (All [a] (-> a (Promise a) (IO Bool)))
-  (do Monad<IO>
+  (do io.Monad<IO>
     [old (atom.read promise)]
     (case (get@ #value old)
       (#.Some _)
@@ -62,8 +56,8 @@
          succeeded? (atom.compare-and-swap old new promise)]
         (if succeeded?
           (do @
-            [_ (M.map @ (function [f] (f value))
-                      (get@ #observers old))]
+            [_ (monad.map @ (function [f] (f value))
+                          (get@ #observers old))]
             (wrap true))
           (resolve value promise))))))
 
@@ -80,16 +74,14 @@
           []
           (await f promise))))))
 
-(struct: #export _ (F.Functor Promise)
+(struct: #export _ (Functor Promise)
   (def: (map f fa)
-    (let [fb (: (Promise ($ +1)) (promise #.None))
-          ## fb (promise' #.None)
-          ]
+    (let [fb (promise #.None)]
       (exec (await (function [a] (resolve (f a) fb))
                    fa)
         fb))))
 
-(struct: #export _ (A.Applicative Promise)
+(struct: #export _ (Applicative Promise)
   (def: functor Functor<Promise>)
 
   (def: (wrap a)
@@ -97,9 +89,7 @@
            #observers (list)}))
 
   (def: (apply ff fa)
-    (let [fb (: (Promise ($ +1)) (promise #.None))
-          ## fb (promise' #.None)
-          ]
+    (let [fb (promise #.None)]
       (exec (await (function [f]
                      (io (await (function [a] (resolve (f a) fb))
                                 fa)))
@@ -111,9 +101,7 @@
   (def: applicative Applicative<Promise>)
 
   (def: (join mma)
-    (let [ma (: (Promise ($ +0)) (promise #.None))
-          ## ma (promise' #.None)
-          ]
+    (let [ma (promise #.None)]
       (exec (await (function [ma']
                      (io (await (function [a'] (resolve a' ma))
                                 ma')))
@@ -131,9 +119,7 @@
 (def: #export (alt left right)
   {#.doc "Heterogeneous alternative combinator."}
   (All [a b] (-> (Promise a) (Promise b) (Promise (| a b))))
-  (let [a|b (: (Promise (| ($ +0) ($ +1))) (promise #.None))
-        ## a|b (promise' #.None)
-        ]
+  (let [a|b (promise #.None)]
     (with-expansions
       [<sides> (do-template [<promise> <tag>]
                  [(await (function [value] (resolve (<tag> value) a|b))
@@ -148,9 +134,7 @@
 (def: #export (either left right)
   {#.doc "Homogeneous alternative combinator."}
   (All [a] (-> (Promise a) (Promise a) (Promise a)))
-  (let [left||right (: (Promise ($ +0)) (promise #.None))
-        ## left||right (promise' #.None)
-        ]
+  (let [left||right (promise #.None)]
     (`` (exec (~~ (do-template [<promise>]
                     [(await (function [value] (resolve value left||right))
                             <promise>)]
@@ -162,26 +146,24 @@
 (def: #export (future computation)
   {#.doc "Runs an I/O computation on its own process and returns an Promise that will eventually host its result."}
   (All [a] (-> (IO a) (Promise a)))
-  (let [!out (: (Promise ($ +0)) (promise #.None))
-        ## !out (promise' #.None)
-        ]
+  (let [!out (promise #.None)]
     (exec ("lux process future" (io (io.run (resolve (io.run computation)
                                                      !out))))
       !out)))
 
 (def: #export (wait time)
-  {#.doc "Returns a Promise that will be resolved after the specified amount of milliseconds."}
+  {#.doc "Returns a promise that will be resolved after the specified amount of milliseconds."}
   (-> Nat (Promise Unit))
   (let [!out (: (Promise Unit) (promise #.None))]
     (exec ("lux process schedule" time (resolve [] !out))
       !out)))
 
 (def: #export (time-out time promise)
-  {#.doc "Wait for a Promise to be resolved within the specified amount of milliseconds."}
+  {#.doc "Wait for a promise to be resolved within the specified amount of milliseconds."}
   (All [a] (-> Nat (Promise a) (Promise (Maybe a))))
   (alt (wait time) promise))
 
 (def: #export (delay time value)
   {#.doc "Delivers a value after a certain period has passed."}
   (All [a] (-> Nat a (Promise a)))
-  (:: Functor<Promise> map (const value) (wait time)))
+  (:: Functor<Promise> map (function.const value) (wait time)))
diff --git a/stdlib/source/lux/concurrency/stm.lux b/stdlib/source/lux/concurrency/stm.lux
index cc39ae0c3..0fe9ee9df 100644
--- a/stdlib/source/lux/concurrency/stm.lux
+++ b/stdlib/source/lux/concurrency/stm.lux
@@ -57,7 +57,8 @@
                        (:! (Var Unit) _var))))
       (:: Monad<Maybe> map (function [[_var _original _current]]
                              _current))
-      (:! (Maybe ($ +0)))))
+      (:!!)
+      ))
 
 (def: #export (read var)
   (All [a] (-> (Var a) (STM a)))
@@ -85,13 +86,15 @@
     #.Nil
     
     (#.Cons [_var _original _current] tx')
-    (if (is (:! (Var ($ +0)) var)
-            (:! (Var ($ +0)) _var))
-      (#.Cons [(:! (Var ($ +0)) _var)
-               (:! ($ +0) _original)
-               (:! ($ +0) value)]
+    (if (is (:! (Var Unit) var)
+            (:! (Var Unit) _var))
+      (#.Cons {#var (:! (Var Unit) _var)
+               #original (:! Unit _original)
+               #current (:! Unit value)}
               tx')
-      (#.Cons [_var _original _current]
+      (#.Cons {#var _var
+               #original _original
+               #current _current}
               (update-tx-value var value tx')))
     ))
 
@@ -127,7 +130,8 @@
 (def: #export (follow target)
   {#.doc "Creates a channel that will receive all changes to the value of the given var."}
   (All [a] (-> (Var a) (IO (frp.Channel a))))
-  (let [head (frp.channel ($ +0))
+  (let [head (: (frp.Channel ($ +0)) (frp.channel))
+        ## head (frp.channel)
         channel-var (var head)
         observer (function [label value]
                    (case (io.run (|> channel-var raw-read (frp.write value)))
@@ -247,10 +251,10 @@
                       (:! (frp.Channel [(STM Unit) (P.Promise Unit)]))
                       (P.await (function recur [?inputs]
                                  (io (case ?inputs
-                                       #.Nil
+                                       #.None
                                        []
 
-                                       (#.Cons head tail)
+                                       (#.Some [head tail])
                                        (exec (process-commit head)
                                          (P.await recur tail)))))))
               (wrap [])))
@@ -264,7 +268,7 @@
 
           For this reason, it's important to note that transactions must be free from side-effects, such as I/O."}
   (All [a] (-> (STM a) (P.Promise a)))
-  (let [output (: (P.Promise ($ +0)) (P.promise #.None))]
+  (let [output (P.promise #.None)]
     (exec (io.run init-processor!)
       (io.run (write! [stm-proc output] pending-commits))
       output)))
diff --git a/stdlib/source/lux/data/lazy.lux b/stdlib/source/lux/data/lazy.lux
index 69f50b5f0..154a3018b 100644
--- a/stdlib/source/lux/data/lazy.lux
+++ b/stdlib/source/lux/data/lazy.lux
@@ -14,7 +14,7 @@
 
   (def: (freeze' generator)
     (All [a] (-> (-> [] a) (Lazy a)))
-    (let [cache (atom.atom (: (Maybe ($ +0)) #.None))]
+    (let [cache (atom.atom #.None)]
       (@abstract (function [_]
                    (case (io.run (atom.read cache))
                      (#.Some value)
diff --git a/stdlib/source/lux/host.jvm.lux b/stdlib/source/lux/host.jvm.lux
index dbbc26fb8..ba556458a 100644
--- a/stdlib/source/lux/host.jvm.lux
+++ b/stdlib/source/lux/host.jvm.lux
@@ -77,7 +77,7 @@
   (#GenericArray GenericType)
   (#GenericWildcard (Maybe [BoundKind GenericType])))
 
-(type: TypeParam
+(type: Type-Paramameter
   [Text (List GenericType)])
 
 (type: Primitive-Mode
@@ -100,13 +100,13 @@
   #AbstractIM
   #DefaultIM)
 
-(type: ClassKind
+(type: Class-Kind
   #Class
   #Interface)
 
-(type: ClassDecl
+(type: Class-Declaration
   {#class-name   Text
-   #class-params (List TypeParam)})
+   #class-params (List Type-Paramameter)})
 
 (type: StackFrame (primitive "java/lang/StackTraceElement"))
 (type: StackTrace (Array StackFrame))
@@ -122,7 +122,7 @@
   {#ann-name   Text
    #ann-params (List AnnotationParam)})
 
-(type: MemberDecl
+(type: Member-Declaration
   {#member-name Text
    #member-privacy PrivacyModifier
    #member-anns (List Annotation)})
@@ -132,7 +132,7 @@
   (#VariableField StateModifier GenericType))
 
 (type: MethodDecl
-  {#method-tvars  (List TypeParam)
+  {#method-tvars  (List Type-Paramameter)
    #method-inputs (List GenericType)
    #method-output GenericType
    #method-exs    (List GenericType)})
@@ -144,38 +144,38 @@
 (type: ConstructorArg
   [GenericType Code])
 
-(type: MethodDef
+(type: Method-Definition
   (#ConstructorMethod [Bool
-                       (List TypeParam)
+                       (List Type-Paramameter)
                        (List ArgDecl)
                        (List ConstructorArg)
                        Code
                        (List GenericType)])
   (#VirtualMethod [Bool
                    Bool
-                   (List TypeParam)
+                   (List Type-Paramameter)
                    (List ArgDecl)
                    GenericType
                    Code
                    (List GenericType)])
   (#OverridenMethod [Bool
-                     ClassDecl
-                     (List TypeParam)
+                     Class-Declaration
+                     (List Type-Paramameter)
                      (List ArgDecl)
                      GenericType
                      Code
                      (List GenericType)])
   (#StaticMethod [Bool
-                  (List TypeParam)
+                  (List Type-Paramameter)
                   (List ArgDecl)
                   GenericType
                   Code
                   (List GenericType)])
-  (#AbstractMethod [(List TypeParam)
+  (#AbstractMethod [(List Type-Paramameter)
                     (List ArgDecl)
                     GenericType
                     (List GenericType)])
-  (#NativeMethod [(List TypeParam)
+  (#NativeMethod [(List Type-Paramameter)
                   (List ArgDecl)
                   GenericType
                   (List GenericType)]))
@@ -192,7 +192,7 @@
   {#import-member-mode   Primitive-Mode
    #import-member-alias  Text
    #import-member-kind   ImportMethodKind
-   #import-member-tvars  (List TypeParam)
+   #import-member-tvars  (List Type-Paramameter)
    #import-member-args   (List [Bool GenericType])
    #import-member-maybe? Bool
    #import-member-try?   Bool
@@ -213,7 +213,7 @@
    #import-field-setter? Bool
    #import-field-type    GenericType})
 
-(type: ImportMemberDecl
+(type: Import-Member-Declaration
   (#EnumDecl        (List Text))
   (#ConstructorDecl [ImportMethodCommons ImportConstructorDecl])
   (#MethodDecl      [ImportMethodCommons ImportMethodDecl])
@@ -275,8 +275,8 @@
 
 (def: (generic-class->type' mode type-params in-array? name+params
                             class->type')
-  (-> Primitive-Mode (List TypeParam) Bool [Text (List GenericType)]
-      (-> Primitive-Mode (List TypeParam) Bool GenericType Code)
+  (-> Primitive-Mode (List Type-Paramameter) Bool [Text (List GenericType)]
+      (-> Primitive-Mode (List Type-Paramameter) Bool GenericType Code)
       Code)
   (case [name+params mode in-array?]
     (^multi [[prim #.Nil] #ManualPrM false]
@@ -293,7 +293,7 @@
       (` (primitive (~ (code.text name)) [(~+ =params)])))))
 
 (def: (class->type' mode type-params in-array? class)
-  (-> Primitive-Mode (List TypeParam) Bool GenericType Code)
+  (-> Primitive-Mode (List Type-Paramameter) Bool GenericType Code)
   (case class
     (#GenericTypeVar name)
     (case (list.find (function [[pname pbounds]]
@@ -322,16 +322,16 @@
     ))
 
 (def: (class->type mode type-params class)
-  (-> Primitive-Mode (List TypeParam) GenericType Code)
+  (-> Primitive-Mode (List Type-Paramameter) GenericType Code)
   (class->type' mode type-params false class))
 
 (def: (type-param-type$ [name bounds])
-  (-> TypeParam Code)
+  (-> Type-Paramameter Code)
   (code.symbol ["" name]))
 
 (def: (class-decl-type$ (^slots [#class-name #class-params]))
-  (-> ClassDecl Code)
-  (let [=params (list/map (: (-> TypeParam Code)
+  (-> Class-Declaration Code)
+  (let [=params (list/map (: (-> Type-Paramameter Code)
                              (function [[pname pbounds]]
                                (case pbounds
                                  #.Nil
@@ -363,8 +363,8 @@
                    (: (Meta Class-Imports)
                       (do Monad<Meta>
                         [current-module macro.current-module-name
-                         defs (macro.defs current-module)]
-                        (wrap (list/fold (: (-> [Text Def] Class-Imports Class-Imports)
+                         definitions (macro.definitions current-module)]
+                        (wrap (list/fold (: (-> [Text Definition] Class-Imports Class-Imports)
                                             (function [[short-name [_ meta _]] imports]
                                               (case (macro.get-text-ann (ident-for #..jvm-class) meta)
                                                 (#.Some full-class-name)
@@ -373,7 +373,7 @@
                                                 _
                                                 imports)))
                                          empty-imports
-                                         defs)))))
+                                         definitions)))))
     (#.Left _)        (list)
     (#.Right imports) imports))
 
@@ -469,7 +469,7 @@
 (def: type-var-class Text "java.lang.Object")
 
 (def: (simple-class$ env class)
-  (-> (List TypeParam) GenericType Text)
+  (-> (List Type-Paramameter) GenericType Text)
   (case class
     (#GenericTypeVar name)
     (case (list.find (function [[pname pbounds]]
@@ -563,7 +563,7 @@
     ))
 
 (def: (field->parser class-name [[field-name _ _] field])
-  (-> Text [MemberDecl FieldDecl] (Syntax Code))
+  (-> Text [Member-Declaration FieldDecl] (Syntax Code))
   (case field
     (#ConstantField _)
     (make-get-const-parser class-name field-name)
@@ -573,7 +573,7 @@
               (make-put-var-parser class-name field-name))))
 
 (def: (make-constructor-parser params class-name arg-decls)
-  (-> (List TypeParam) Text (List ArgDecl) (Syntax Code))
+  (-> (List Type-Paramameter) Text (List ArgDecl) (Syntax Code))
   (do p.Monad<Parser>
     [[_ args] (: (Syntax [Unit (List Code)])
                  (s.form ($_ p.seq (s.this (' ::new!)) (s.tuple (p.exactly (list.size arg-decls) s.any)))))
@@ -582,7 +582,7 @@
               (~+ args))))))
 
 (def: (make-static-method-parser params class-name method-name arg-decls)
-  (-> (List TypeParam) Text Text (List ArgDecl) (Syntax Code))
+  (-> (List Type-Paramameter) Text Text (List ArgDecl) (Syntax Code))
   (do p.Monad<Parser>
     [#let [dotted-name (format "::" method-name "!")]
      [_ args] (: (Syntax [Unit (List Code)])
@@ -593,7 +593,7 @@
 
 (do-template [<name> <jvm-op>]
   [(def: (<name> params class-name method-name arg-decls)
-     (-> (List TypeParam) Text Text (List ArgDecl) (Syntax Code))
+     (-> (List Type-Paramameter) Text Text (List ArgDecl) (Syntax Code))
      (do p.Monad<Parser>
        [#let [dotted-name (format "::" method-name "!")]
         [_ args] (: (Syntax [Unit (List Code)])
@@ -607,7 +607,7 @@
   )
 
 (def: (method->parser params class-name [[method-name _ _] meth-def])
-  (-> (List TypeParam) Text [MemberDecl MethodDef] (Syntax Code))
+  (-> (List Type-Paramameter) Text [Member-Declaration Method-Definition] (Syntax Code))
   (case meth-def
     (#ConstructorMethod strict? type-vars args constructor-args return-expr exs)
     (make-constructor-parser params class-name args)
@@ -659,7 +659,7 @@
             (not (text.contains? "." name))))
 
 (def: (generic-type^ imports type-vars)
-  (-> Class-Imports (List TypeParam) (Syntax GenericType))
+  (-> Class-Imports (List Type-Paramameter) (Syntax GenericType))
   ($_ p.either
       (do p.Monad<Parser>
         [_ (s.this (' ?))]
@@ -703,7 +703,7 @@
       ))
 
 (def: (type-param^ imports)
-  (-> Class-Imports (Syntax TypeParam))
+  (-> Class-Imports (Syntax Type-Paramameter))
   (p.either (do p.Monad<Parser>
               [param-name s.local-symbol]
               (wrap [param-name (list)]))
@@ -714,11 +714,11 @@
                        (wrap [param-name bounds])))))
 
 (def: (type-params^ imports)
-  (-> Class-Imports (Syntax (List TypeParam)))
+  (-> Class-Imports (Syntax (List Type-Paramameter)))
   (s.tuple (p.some (type-param^ imports))))
 
 (def: (class-decl^ imports)
-  (-> Class-Imports (Syntax ClassDecl))
+  (-> Class-Imports (Syntax Class-Declaration))
   (p.either (do p.Monad<Parser>
               [name (full-class-name^ imports)
                _ (assert-no-periods name)]
@@ -731,7 +731,7 @@
             ))
 
 (def: (super-class-decl^ imports type-vars)
-  (-> Class-Imports (List TypeParam) (Syntax Super-Class-Decl))
+  (-> Class-Imports (List Type-Paramameter) (Syntax Super-Class-Decl))
   (p.either (do p.Monad<Parser>
               [name (full-class-name^ imports)
                _ (assert-no-periods name)]
@@ -767,19 +767,19 @@
     (wrap (maybe.default (list) anns??))))
 
 (def: (throws-decl'^ imports type-vars)
-  (-> Class-Imports (List TypeParam) (Syntax (List GenericType)))
+  (-> Class-Imports (List Type-Paramameter) (Syntax (List GenericType)))
   (do p.Monad<Parser>
     [_ (s.this (' #throws))]
     (s.tuple (p.some (generic-type^ imports type-vars)))))
 
 (def: (throws-decl^ imports type-vars)
-  (-> Class-Imports (List TypeParam) (Syntax (List GenericType)))
+  (-> Class-Imports (List Type-Paramameter) (Syntax (List GenericType)))
   (do p.Monad<Parser>
     [exs? (p.maybe (throws-decl'^ imports type-vars))]
     (wrap (maybe.default (list) exs?))))
 
 (def: (method-decl^ imports type-vars)
-  (-> Class-Imports (List TypeParam) (Syntax [MemberDecl MethodDecl]))
+  (-> Class-Imports (List Type-Paramameter) (Syntax [Member-Declaration MethodDecl]))
   (s.form (do p.Monad<Parser>
             [tvars (p.default (list) (type-params^ imports))
              name s.local-symbol
@@ -800,7 +800,7 @@
       (:: p.Monad<Parser> wrap [])))
 
 (def: (field-decl^ imports type-vars)
-  (-> Class-Imports (List TypeParam) (Syntax [MemberDecl FieldDecl]))
+  (-> Class-Imports (List Type-Paramameter) (Syntax [Member-Declaration FieldDecl]))
   (p.either (s.form (do p.Monad<Parser>
                       [_ (s.this (' #const))
                        name s.local-symbol
@@ -817,24 +817,24 @@
                       (wrap [[name pm anns] (#VariableField [sm type])])))))
 
 (def: (arg-decl^ imports type-vars)
-  (-> Class-Imports (List TypeParam) (Syntax ArgDecl))
+  (-> Class-Imports (List Type-Paramameter) (Syntax ArgDecl))
   (s.tuple (p.seq s.local-symbol
                   (generic-type^ imports type-vars))))
 
 (def: (arg-decls^ imports type-vars)
-  (-> Class-Imports (List TypeParam) (Syntax (List ArgDecl)))
+  (-> Class-Imports (List Type-Paramameter) (Syntax (List ArgDecl)))
   (p.some (arg-decl^ imports type-vars)))
 
 (def: (constructor-arg^ imports type-vars)
-  (-> Class-Imports (List TypeParam) (Syntax ConstructorArg))
+  (-> Class-Imports (List Type-Paramameter) (Syntax ConstructorArg))
   (s.tuple (p.seq (generic-type^ imports type-vars) s.any)))
 
 (def: (constructor-args^ imports type-vars)
-  (-> Class-Imports (List TypeParam) (Syntax (List ConstructorArg)))
+  (-> Class-Imports (List Type-Paramameter) (Syntax (List ConstructorArg)))
   (s.tuple (p.some (constructor-arg^ imports type-vars))))
 
 (def: (constructor-method^ imports class-vars)
-  (-> Class-Imports (List TypeParam) (Syntax [MemberDecl MethodDef]))
+  (-> Class-Imports (List Type-Paramameter) (Syntax [Member-Declaration Method-Definition]))
   (s.form (do p.Monad<Parser>
             [pm privacy-modifier^
              strict-fp? (s.this? (' #strict))
@@ -852,7 +852,7 @@
                    (#ConstructorMethod strict-fp? method-vars arg-decls constructor-args body exs)]))))
 
 (def: (virtual-method-def^ imports class-vars)
-  (-> Class-Imports (List TypeParam) (Syntax [MemberDecl MethodDef]))
+  (-> Class-Imports (List Type-Paramameter) (Syntax [Member-Declaration Method-Definition]))
   (s.form (do p.Monad<Parser>
             [pm privacy-modifier^
              strict-fp? (s.this? (' #strict))
@@ -871,7 +871,7 @@
                    (#VirtualMethod final? strict-fp? method-vars arg-decls return-type body exs)]))))
 
 (def: (overriden-method-def^ imports)
-  (-> Class-Imports (Syntax [MemberDecl MethodDef]))
+  (-> Class-Imports (Syntax [Member-Declaration Method-Definition]))
   (s.form (do p.Monad<Parser>
             [strict-fp? (s.this? (' #strict))
              owner-class (class-decl^ imports)
@@ -889,7 +889,7 @@
                    (#OverridenMethod strict-fp? owner-class method-vars arg-decls return-type body exs)]))))
 
 (def: (static-method-def^ imports)
-  (-> Class-Imports (Syntax [MemberDecl MethodDef]))
+  (-> Class-Imports (Syntax [Member-Declaration Method-Definition]))
   (s.form (do p.Monad<Parser>
             [pm privacy-modifier^
              strict-fp? (s.this? (' #strict))
@@ -908,7 +908,7 @@
                    (#StaticMethod strict-fp? method-vars arg-decls return-type body exs)]))))
 
 (def: (abstract-method-def^ imports)
-  (-> Class-Imports (Syntax [MemberDecl MethodDef]))
+  (-> Class-Imports (Syntax [Member-Declaration Method-Definition]))
   (s.form (do p.Monad<Parser>
             [pm privacy-modifier^
              _ (s.this (' #abstract))
@@ -925,7 +925,7 @@
                    (#AbstractMethod method-vars arg-decls return-type exs)]))))
 
 (def: (native-method-def^ imports)
-  (-> Class-Imports (Syntax [MemberDecl MethodDef]))
+  (-> Class-Imports (Syntax [Member-Declaration Method-Definition]))
   (s.form (do p.Monad<Parser>
             [pm privacy-modifier^
              _ (s.this (' #native))
@@ -942,7 +942,7 @@
                    (#NativeMethod method-vars arg-decls return-type exs)]))))
 
 (def: (method-def^ imports class-vars)
-  (-> Class-Imports (List TypeParam) (Syntax [MemberDecl MethodDef]))
+  (-> Class-Imports (List Type-Paramameter) (Syntax [Member-Declaration Method-Definition]))
   ($_ p.either
       (constructor-method^ imports class-vars)
       (virtual-method-def^ imports class-vars)
@@ -956,7 +956,7 @@
   (s.form (p.seq s.any s.any)))
 
 (def: class-kind^
-  (Syntax ClassKind)
+  (Syntax Class-Kind)
   (p.either (do p.Monad<Parser>
               [_ (s.this (' #class))]
               (wrap #Class))
@@ -972,7 +972,7 @@
              s.local-symbol)))
 
 (def: (import-member-args^ imports type-vars)
-  (-> Class-Imports (List TypeParam) (Syntax (List [Bool GenericType])))
+  (-> Class-Imports (List Type-Paramameter) (Syntax (List [Bool GenericType])))
   (s.tuple (p.some (p.seq (s.this? (' #?)) (generic-type^ imports type-vars)))))
 
 (def: import-member-return-flags^
@@ -985,7 +985,7 @@
          (s.this (' #auto))))
 
 (def: (import-member-decl^ imports owner-vars)
-  (-> Class-Imports (List TypeParam) (Syntax ImportMemberDecl))
+  (-> Class-Imports (List Type-Paramameter) (Syntax Import-Member-Declaration))
   ($_ p.either
       (s.form (do p.Monad<Parser>
                 [_ (s.this (' #enum))
@@ -1108,11 +1108,11 @@
     (format (bound-kind$ bound-kind) (generic-type$ bound))))
 
 (def: (type-param$ [name bounds])
-  (-> TypeParam JVM-Code)
+  (-> Type-Paramameter JVM-Code)
   (format "(" name " " (spaced (list/map generic-type$ bounds)) ")"))
 
 (def: (class-decl$ (^open))
-  (-> ClassDecl JVM-Code)
+  (-> Class-Declaration JVM-Code)
   (format "(" (sanitize class-name) " " (spaced (list/map type-param$ class-params)) ")"))
 
 (def: (super-class-decl$ (^slots [#super-class-name #super-class-params]))
@@ -1120,7 +1120,7 @@
   (format "(" (sanitize super-class-name) " " (spaced (list/map generic-type$ super-class-params)) ")"))
 
 (def: (method-decl$ [[name pm anns] method-decl])
-  (-> [MemberDecl MethodDecl] JVM-Code)
+  (-> [Member-Declaration MethodDecl] JVM-Code)
   (let [(^slots [#method-tvars #method-inputs #method-output #method-exs]) method-decl]
     (with-parens
       (spaced (list name
@@ -1139,7 +1139,7 @@
     #DefaultSM  "default"))
 
 (def: (field-decl$ [[name pm anns] field])
-  (-> [MemberDecl FieldDecl] JVM-Code)
+  (-> [Member-Declaration FieldDecl] JVM-Code)
   (case field
     (#ConstantField class value)
     (with-parens
@@ -1170,7 +1170,7 @@
     (spaced (list (generic-type$ class) (code.to-text term)))))
 
 (def: (method-def$ replacer super-class [[name pm anns] method-def])
-  (-> (-> Code Code) Super-Class-Decl [MemberDecl MethodDef] JVM-Code)
+  (-> (-> Code Code) Super-Class-Decl [Member-Declaration Method-Definition] JVM-Code)
   (case method-def
     (#ConstructorMethod strict-fp? type-vars arg-decls constructor-args body exs)
     (with-parens
@@ -1469,7 +1469,7 @@
                        (~ g!obj))))))))
 
 (def: (class-import$ long-name? [full-name params])
-  (-> Bool ClassDecl Code)
+  (-> Bool Class-Declaration Code)
   (let [def-name (if long-name?
                    full-name
                    (short-class-name full-name))
@@ -1483,7 +1483,7 @@
                       [(~+ params')]))))))
 
 (def: (member-type-vars class-tvars member)
-  (-> (List TypeParam) ImportMemberDecl (List TypeParam))
+  (-> (List Type-Paramameter) Import-Member-Declaration (List Type-Paramameter))
   (case member
     (#ConstructorDecl [commons _])
     (list/compose class-tvars (get@ #import-member-tvars commons))
@@ -1500,7 +1500,7 @@
     class-tvars))
 
 (def: (member-def-arg-bindings type-params class member)
-  (-> (List TypeParam) ClassDecl ImportMemberDecl (Meta [(List Code) (List Code) (List Text) (List Code)]))
+  (-> (List Type-Paramameter) Class-Declaration Import-Member-Declaration (Meta [(List Code) (List Code) (List Text) (List Code)]))
   (case member
     (^or (#ConstructorDecl [commons _]) (#MethodDecl [commons _]))
     (let [(^slots [#import-member-tvars #import-member-args]) commons]
@@ -1531,7 +1531,7 @@
     (:: Monad<Meta> wrap [(list) (list) (list) (list)])))
 
 (def: (member-def-return mode type-params class member)
-  (-> Primitive-Mode (List TypeParam) ClassDecl ImportMemberDecl (Meta Code))
+  (-> Primitive-Mode (List Type-Paramameter) Class-Declaration Import-Member-Declaration (Meta Code))
   (case member
     (#ConstructorDecl _)
     (:: Monad<Meta> wrap (class-decl-type$ class))
@@ -1543,7 +1543,7 @@
     (macro.fail "Only methods have return values.")))
 
 (def: (decorate-return-maybe member [return-type return-term])
-  (-> ImportMemberDecl [Code Code] [Code Code])
+  (-> Import-Member-Declaration [Code Code] [Code Code])
   (case member
     (^or (#ConstructorDecl [commons _]) (#MethodDecl [commons _]))
     (if (get@ #import-member-maybe? commons)
@@ -1562,7 +1562,7 @@
 
 (do-template [<name> <tag> <type-trans> <term-trans>]
   [(def: (<name> member [return-type return-term])
-     (-> ImportMemberDecl [Code Code] [Code Code])
+     (-> Import-Member-Declaration [Code Code] [Code Code])
      (case member
        (^or (#ConstructorDecl [commons _]) (#MethodDecl [commons _]))
        (if (get@ <tag> commons)
@@ -1577,13 +1577,13 @@
   )
 
 (def: (free-type-param? [name bounds])
-  (-> TypeParam Bool)
+  (-> Type-Paramameter Bool)
   (case bounds
     #.Nil true
     _     false))
 
 (def: (type-param->type-arg [name _])
-  (-> TypeParam Code)
+  (-> Type-Paramameter Code)
   (code.symbol ["" name]))
 
 (def: (with-mode-output mode output-type body)
@@ -1668,7 +1668,7 @@
       _       g!input)))
 
 (def: (member-def-interop type-params kind class [arg-function-inputs arg-method-inputs arg-classes arg-types] member method-prefix)
-  (-> (List TypeParam) ClassKind ClassDecl [(List Code) (List Code) (List Text) (List Code)] ImportMemberDecl Text (Meta (List Code)))
+  (-> (List Type-Paramameter) Class-Kind Class-Declaration [(List Code) (List Code) (List Text) (List Code)] Import-Member-Declaration Text (Meta (List Code)))
   (let [[full-name class-tvars] class
         full-name (sanitize full-name)
         all-params (|> (member-type-vars class-tvars member)
@@ -1817,7 +1817,7 @@
       )))
 
 (def: (member-import$ type-params long-name? kind class member)
-  (-> (List TypeParam) Bool ClassKind ClassDecl ImportMemberDecl (Meta (List Code)))
+  (-> (List Type-Paramameter) Bool Class-Kind Class-Declaration Import-Member-Declaration (Meta (List Code)))
   (let [[full-name _] class
         method-prefix (if long-name?
                         full-name
@@ -1835,7 +1835,7 @@
   (try ("jvm invokestatic:java.lang.Class:forName:java.lang.String" class-name)))
 
 (def: (class-kind [class-name _])
-  (-> ClassDecl (Meta ClassKind))
+  (-> Class-Declaration (Meta Class-Kind))
   (let [class-name (sanitize class-name)]
     (case (load-class class-name)
       (#.Right class)
diff --git a/stdlib/source/lux/world/net/tcp.jvm.lux b/stdlib/source/lux/world/net/tcp.jvm.lux
index 914f76093..dfc27a0f2 100644
--- a/stdlib/source/lux/world/net/tcp.jvm.lux
+++ b/stdlib/source/lux/world/net/tcp.jvm.lux
@@ -104,7 +104,8 @@
     (P.future
      (do (e.ErrorT io.Monad<IO>)
        [server (ServerSocket::new [(nat-to-int port)])
-        #let [output (frp.channel TCP)
+        #let [output (: (frp.Channel TCP)
+                        (frp.channel))
               _ (: (P.Promise Bool)
                    (P.future
                     (loop [tail output]
diff --git a/stdlib/test/test/lux/concurrency/frp.lux b/stdlib/test/test/lux/concurrency/frp.lux
index 057f155d0..717eb0624 100644
--- a/stdlib/test/test/lux/concurrency/frp.lux
+++ b/stdlib/test/test/lux/concurrency/frp.lux
@@ -10,7 +10,7 @@
 
 (def: (to-channel values)
   (-> (List Int) (&.Channel Int))
-  (let [_channel (&.channel Int)]
+  (let [_channel (: (&.Channel Int) (&.channel))]
     (io.run (do io.Monad<IO>
               [_ (M.map @ (function [value] (&.write value _channel))
                         values)
@@ -31,7 +31,7 @@
 
       (wrap (do P.Monad<Promise>
               [elems (&.consume (let [input (to-channel (list 0 1 2 3 4 5))
-                                      output (&.channel Int)]
+                                      output (: (&.Channel Int) (&.channel))]
                                   (exec (&.pipe input output)
                                     output)))]
               (assert "Can pipe one channel into another."