dependent-state (empty) → 1.0.0

raw patch · 3 files changed

+322/−0 lines, 3 filesdep +basedep +lensdep +mtl

Dependencies added: base, lens, mtl, prologue

Files

LICENSE +202/−0
dependent-state.cabal +34/−0
src/Control/Monad/State/Dependent.hs +86/−0

+ LICENSE view

@@ -0,0 +1,202 @@++                                 Apache License+                           Version 2.0, January 2004+                        http://www.apache.org/licenses/++   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION++   1. Definitions.++      "License" shall mean the terms and conditions for use, reproduction,+      and distribution as defined by Sections 1 through 9 of this document.++      "Licensor" shall mean the copyright owner or entity authorized by+      the copyright owner that is granting the License.++      "Legal Entity" shall mean the union of the acting entity and all+      other entities that control, are controlled by, or are under common+      control with that entity. For the purposes of this definition,+      "control" means (i) the power, direct or indirect, to cause the+      direction or management of such entity, whether by contract or+      otherwise, or (ii) ownership of fifty percent (50%) or more of the+      outstanding shares, or (iii) beneficial ownership of such entity.++      "You" (or "Your") shall mean an individual or Legal Entity+      exercising permissions granted by this License.++      "Source" form shall mean the preferred form for making modifications,+      including but not limited to software source code, documentation+      source, and configuration files.++      "Object" form shall mean any form resulting from mechanical+      transformation or translation of a Source form, including but+      not limited to compiled object code, generated documentation,+      and conversions to other media types.++      "Work" shall mean the work of authorship, whether in Source or+      Object form, made available under the License, as indicated by a+      copyright notice that is included in or attached to the work+      (an example is provided in the Appendix below).++      "Derivative Works" shall mean any work, whether in Source or Object+      form, that is based on (or derived from) the Work and for which the+      editorial revisions, annotations, elaborations, or other modifications+      represent, as a whole, an original work of authorship. For the purposes+      of this License, Derivative Works shall not include works that remain+      separable from, or merely link (or bind by name) to the interfaces of,+      the Work and Derivative Works thereof.++      "Contribution" shall mean any work of authorship, including+      the original version of the Work and any modifications or additions+      to that Work or Derivative Works thereof, that is intentionally+      submitted to Licensor for inclusion in the Work by the copyright owner+      or by an individual or Legal Entity authorized to submit on behalf of+      the copyright owner. For the purposes of this definition, "submitted"+      means any form of electronic, verbal, or written communication sent+      to the Licensor or its representatives, including but not limited to+      communication on electronic mailing lists, source code control systems,+      and issue tracking systems that are managed by, or on behalf of, the+      Licensor for the purpose of discussing and improving the Work, but+      excluding communication that is conspicuously marked or otherwise+      designated in writing by the copyright owner as "Not a Contribution."++      "Contributor" shall mean Licensor and any individual or Legal Entity+      on behalf of whom a Contribution has been received by Licensor and+      subsequently incorporated within the Work.++   2. Grant of Copyright License. Subject to the terms and conditions of+      this License, each Contributor hereby grants to You a perpetual,+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable+      copyright license to reproduce, prepare Derivative Works of,+      publicly display, publicly perform, sublicense, and distribute the+      Work and such Derivative Works in Source or Object form.++   3. Grant of Patent License. Subject to the terms and conditions of+      this License, each Contributor hereby grants to You a perpetual,+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable+      (except as stated in this section) patent license to make, have made,+      use, offer to sell, sell, import, and otherwise transfer the Work,+      where such license applies only to those patent claims licensable+      by such Contributor that are necessarily infringed by their+      Contribution(s) alone or by combination of their Contribution(s)+      with the Work to which such Contribution(s) was submitted. If You+      institute patent litigation against any entity (including a+      cross-claim or counterclaim in a lawsuit) alleging that the Work+      or a Contribution incorporated within the Work constitutes direct+      or contributory patent infringement, then any patent licenses+      granted to You under this License for that Work shall terminate+      as of the date such litigation is filed.++   4. Redistribution. You may reproduce and distribute copies of the+      Work or Derivative Works thereof in any medium, with or without+      modifications, and in Source or Object form, provided that You+      meet the following conditions:++      (a) You must give any other recipients of the Work or+          Derivative Works a copy of this License; and++      (b) You must cause any modified files to carry prominent notices+          stating that You changed the files; and++      (c) You must retain, in the Source form of any Derivative Works+          that You distribute, all copyright, patent, trademark, and+          attribution notices from the Source form of the Work,+          excluding those notices that do not pertain to any part of+          the Derivative Works; and++      (d) If the Work includes a "NOTICE" text file as part of its+          distribution, then any Derivative Works that You distribute must+          include a readable copy of the attribution notices contained+          within such NOTICE file, excluding those notices that do not+          pertain to any part of the Derivative Works, in at least one+          of the following places: within a NOTICE text file distributed+          as part of the Derivative Works; within the Source form or+          documentation, if provided along with the Derivative Works; or,+          within a display generated by the Derivative Works, if and+          wherever such third-party notices normally appear. The contents+          of the NOTICE file are for informational purposes only and+          do not modify the License. You may add Your own attribution+          notices within Derivative Works that You distribute, alongside+          or as an addendum to the NOTICE text from the Work, provided+          that such additional attribution notices cannot be construed+          as modifying the License.++      You may add Your own copyright statement to Your modifications and+      may provide additional or different license terms and conditions+      for use, reproduction, or distribution of Your modifications, or+      for any such Derivative Works as a whole, provided Your use,+      reproduction, and distribution of the Work otherwise complies with+      the conditions stated in this License.++   5. Submission of Contributions. Unless You explicitly state otherwise,+      any Contribution intentionally submitted for inclusion in the Work+      by You to the Licensor shall be under the terms and conditions of+      this License, without any additional terms or conditions.+      Notwithstanding the above, nothing herein shall supersede or modify+      the terms of any separate license agreement you may have executed+      with Licensor regarding such Contributions.++   6. Trademarks. This License does not grant permission to use the trade+      names, trademarks, service marks, or product names of the Licensor,+      except as required for reasonable and customary use in describing the+      origin of the Work and reproducing the content of the NOTICE file.++   7. Disclaimer of Warranty. Unless required by applicable law or+      agreed to in writing, Licensor provides the Work (and each+      Contributor provides its Contributions) on an "AS IS" BASIS,+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or+      implied, including, without limitation, any warranties or conditions+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A+      PARTICULAR PURPOSE. You are solely responsible for determining the+      appropriateness of using or redistributing the Work and assume any+      risks associated with Your exercise of permissions under this License.++   8. Limitation of Liability. In no event and under no legal theory,+      whether in tort (including negligence), contract, or otherwise,+      unless required by applicable law (such as deliberate and grossly+      negligent acts) or agreed to in writing, shall any Contributor be+      liable to You for damages, including any direct, indirect, special,+      incidental, or consequential damages of any character arising as a+      result of this License or out of the use or inability to use the+      Work (including but not limited to damages for loss of goodwill,+      work stoppage, computer failure or malfunction, or any and all+      other commercial damages or losses), even if such Contributor+      has been advised of the possibility of such damages.++   9. Accepting Warranty or Additional Liability. While redistributing+      the Work or Derivative Works thereof, You may choose to offer,+      and charge a fee for, acceptance of support, warranty, indemnity,+      or other liability obligations and/or rights consistent with this+      License. However, in accepting such obligations, You may act only+      on Your own behalf and on Your sole responsibility, not on behalf+      of any other Contributor, and only if You agree to indemnify,+      defend, and hold each Contributor harmless for any liability+      incurred by, or claims asserted against, such Contributor by reason+      of your accepting any such warranty or additional liability.++   END OF TERMS AND CONDITIONS++   APPENDIX: How to apply the Apache License to your work.++      To apply the Apache License to your work, attach the following+      boilerplate notice, with the fields enclosed by brackets "[]"+      replaced with your own identifying information. (Don't include+      the brackets!)  The text should be enclosed in the appropriate+      comment syntax for the file format. We also recommend that a+      file or class name and description of purpose be included on the+      same "printed page" as the copyright notice for easier+      identification within third-party archives.++   Copyright [yyyy] [name of copyright owner]++   Licensed under the Apache License, Version 2.0 (the "License");+   you may not use this file except in compliance with the License.+   You may obtain a copy of the License at++       http://www.apache.org/licenses/LICENSE-2.0++   Unless required by applicable law or agreed to in writing, software+   distributed under the License is distributed on an "AS IS" BASIS,+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.+   See the License for the specific language governing permissions and+   limitations under the License.

+ dependent-state.cabal view

@@ -0,0 +1,34 @@+name: dependent-state+version: 1.0.0+cabal-version: >=1.10+build-type: Simple+license: Apache-2.0+license-file: LICENSE+copyright: Copyright (C) 2015 Wojciech Danilo+maintainer: Wojciech Danilo <wojciech.danilo@gmail.com>+stability: experimental+homepage: https://github.com/wdanilo/dependent-state+bug-reports: https://github.com/wdanilo/dependent-state/issues+synopsis: Control structure similar to Control.Monad.State, allowing multiple nested states, distinguishable by provided phantom types.+category: Data+author: Wojciech Danilo++library+    exposed-modules:+        Control.Monad.State.Dependent+    build-depends:+        base >=4.6 && <4.9,+        lens >=4.13,+        mtl >=2.2.1,+        prologue -any+    default-language: Haskell2010+    default-extensions: ConstraintKinds DataKinds DefaultSignatures+                        DeriveDataTypeable DeriveFoldable DeriveFunctor DeriveGeneric+                        DeriveTraversable DoAndIfThenElse EmptyDataDecls FlexibleContexts+                        FlexibleInstances GeneralizedNewtypeDeriving InstanceSigs+                        LambdaCase MultiParamTypeClasses NoImplicitPrelude+                        OverloadedStrings StandaloneDeriving TemplateHaskell TupleSections+                        TypeOperators ViewPatterns TypeFamilies+    hs-source-dirs: src+    ghc-options: -Wall -O2+

+ src/Control/Monad/State/Dependent.hs view

@@ -0,0 +1,86 @@+{-# LANGUAGE FunctionalDependencies #-}+{-# LANGUAGE UndecidableInstances   #-}++module Control.Monad.State.Dependent where++import Prologue++import qualified Control.Monad.State as State+++-- === Types and classes ===++newtype StateT t s m a = StateT (State.StateT s m a)+                       deriving (Functor, Monad, Applicative, MonadIO, MonadPlus, MonadTrans, Alternative, MonadFix)++type State t s = StateT t s Identity++type MonadState t s m = (MonadGet t s m, MonadPut t s m)+class Monad m => MonadGet t s m | t m -> s where get :: t -> m s+class Monad m => MonadPut t s m | t m -> s where put :: t -> s -> m ()++fromStateT :: StateT t s m a -> State.StateT s m a+fromStateT (StateT s) = s+{-# INLINE fromStateT #-}++-- Basic instances ++instance {-# OVERLAPPABLE #-} Monad m => MonadGet t s (StateT t s m) where get _ = StateT State.get   ; {-# INLINE get #-}+instance {-# OVERLAPPABLE #-} Monad m => MonadPut t s (StateT t s m) where put _ = StateT . State.put ; {-# INLINE put #-}++instance State.MonadState r m => State.MonadState r (StateT t s m) where+    get = StateT (lift State.get)   ; {-# INLINE get #-}+    put = StateT . lift . State.put ; {-# INLINE put #-}++instance {-# OVERLAPPABLE #-} (MonadGet tp s m, MonadTrans t, Monad (t m)) => MonadGet tp s (t m) where get = lift .  get ; {-# INLINE get #-}+instance {-# OVERLAPPABLE #-} (MonadPut tp s m, MonadTrans t, Monad (t m)) => MonadPut tp s (t m) where put = lift .: put ; {-# INLINE put #-}+++-- === Utilities ===++runT  ::            t -> StateT t s m a -> s -> m (a, s)+evalT :: Monad m => t -> StateT t s m a -> s -> m a+execT :: Monad m => t -> StateT t s m a -> s -> m s++runT  _ = State.runStateT  . fromStateT ; {-# INLINE runT  #-}+evalT _ = State.evalStateT . fromStateT ; {-# INLINE evalT #-}+execT _ = State.execStateT . fromStateT ; {-# INLINE execT #-}++run  :: t -> State t s a -> s -> (a, s)+eval :: t -> State t s a -> s -> a+exec :: t -> State t s a -> s -> s++run   = runIdentity .:. runT  ; {-# INLINE run  #-}+eval  = runIdentity .:. evalT ; {-# INLINE eval #-}+exec  = runIdentity .:. execT ; {-# INLINE exec #-}++with :: MonadState t s m => t -> (s -> s) -> m a -> m a+with t f m = do+    s <- get t+    put t $ f s+    out <- m+    put t s+    return out+{-# INLINE with #-}++modify :: MonadState t s m => t -> (s -> (s, a)) -> m a+modify t = modifyM t . fmap return+{-# INLINE modify #-}++modify_ :: MonadState t s m => t -> (s -> s) -> m ()+modify_ t = modify t . fmap (,())+{-# INLINE modify_ #-}++modifyM :: MonadState t s m => t -> (s -> m (s, a)) -> m a+modifyM t f = do+    s <- get t+    (s', a) <- f s+    put t $ s'+    return a+{-# INLINE modifyM #-}++withState :: MonadState t s m => t -> (s -> s) -> m ()+withState t f = do+    s <- get t+    put t (f s)+{-# INLINE withState #-}