aeson-picker (empty) → 0.1.0.0

raw patch · 8 files changed

+156/−0 lines, 8 filesdep +aesondep +aeson-pickerdep +basesetup-changed

Dependencies added: aeson, aeson-picker, base, hspec, lens, lens-aeson, text

Files

• CHANGELOG.md +11/−0
• LICENSE +30/−0
• README.md +3/−0
• Setup.hs +2/−0
• aeson-picker.cabal +44/−0
• src/Data/Aeson/Picker.hs +6/−0
• src/Data/Aeson/Picker/Internal/Functions.hs +38/−0
• test/Spec.hs +22/−0

@@ -0,0 +1,11 @@+# Changelog+All notable changes to this project will be documented in this file.++The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)+and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).++## [Unreleased]++## [0.1.0.0] - 2018-01-22+### Added+- Initial version for picking.

@@ -0,0 +1,30 @@+Copyright Bogdan Neterebskii (c) 2018++All rights reserved.++Redistribution and use in source and binary forms, with or without+modification, are permitted provided that the following conditions are met:++    * Redistributions of source code must retain the above copyright+      notice, this list of conditions and the following disclaimer.++    * Redistributions in binary form must reproduce the above+      copyright notice, this list of conditions and the following+      disclaimer in the documentation and/or other materials provided+      with the distribution.++    * Neither the name of Bogdan Neterebskii nor the names of other+      contributors may be used to endorse or promote products derived+      from this software without specific prior written permission.++THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

@@ -0,0 +1,3 @@+# aeson-picker++Tiny library to get fields from JSON format

@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain

@@ -0,0 +1,44 @@+name:           aeson-picker+version:        0.1.0.0+description:    Tiny library to get fields from JSON format+homepage:       https://github.com/ozzzzz/aeson-picker#readme+bug-reports:    https://github.com/ozzzzz/aeson-picker/issues+author:         Bogdan Neterebskii+maintainer:     bog2dan1@gmail.com+copyright:      (c) 2018, Bogdan Neterebskii+stability:      experimental+category:       Text, Web, JSON+license:        BSD3+license-file:   LICENSE+build-type:     Simple+cabal-version:  >= 1.10++extra-source-files:+    CHANGELOG.md+    README.md++source-repository head+  type: git+  location: https://github.com/ozzzzz/aeson-picker++library+  hs-source-dirs:  src+  exposed-modules:  Data.Aeson.Picker+  other-modules:    Data.Aeson.Picker.Internal.Functions+  build-depends:    base >=4.7 && <5+                  , aeson+                  , lens+                  , lens-aeson+                  , text+  default-language: Haskell2010++test-suite aeson-picker-test+  type: exitcode-stdio-1.0+  main-is: Spec.hs+  hs-source-dirs:  test+  ghc-options: -threaded -rtsopts -with-rtsopts=-N+  build-depends:   base >=4.7 && <5+                 , aeson-picker+                 , hspec+                 , text+  default-language: Haskell2010

@@ -0,0 +1,6 @@+module Data.Aeson.Picker+  ( (|--)+  , (|-?)+  ) where++import Data.Aeson.Picker.Internal.Functions ((|--), (|-?))

@@ -0,0 +1,38 @@+{-# LANGUAGE FlexibleInstances #-}+{-# LANGUAGE RankNTypes        #-}++module Data.Aeson.Picker.Internal.Functions+  ( (|--)+  , (|-?)+  ) where++import           Control.Lens      (Traversal', (^?))+import           Data.Aeson        (FromJSON (..), Result (..), Value, fromJSON)+import           Data.Aeson.Lens   +import           Data.Maybe        (fromJust)+import           Data.Text         (Text)++infix 5 |--+(|--) :: (AsValue t, FromJSON a) => t -> [Text] -> a+json |-- []        = getFromValue . fromJust $ json ^? _Value+json |-- selectors = getFromValue . fromJust $ json ^? genGetter selectors++infix 5 |-?+(|-?) :: (AsValue t, FromJSON a) => t -> [Text] -> Maybe a+json |-? []        = (json ^? _Value)              >>= getFromValueM+json |-? selectors = (json ^? genGetter selectors) >>= getFromValueM++genGetter :: AsValue t => [Text] -> Traversal' t Value+genGetter []     = error "selector should has at least one field"+genGetter [x]    = key x+genGetter (x:xs) = key x . genGetter xs++getFromValue :: FromJSON a => Value -> a+getFromValue value = case fromJSON value of+  Success r -> r+  Error e   -> error e++getFromValueM :: FromJSON a => Value -> Maybe a+getFromValueM value = case fromJSON value of+  Success r -> Just r+  Error e   -> Nothing

@@ -0,0 +1,22 @@+{-# LANGUAGE OverloadedStrings #-}++import           Data.Aeson.Picker+import           Data.Text         (Text, unpack)+import           Test.Hspec++exampleJSON :: Text+exampleJSON = "{\"object-like\":{\"string-like\":\"this is string\", \"int-like\": 42}, \"float-like\":1.2}"++main :: IO ()+main = hspec $ do+    describe ("With JSON " ++ unpack exampleJSON) $ do+      it "|-- [\"float-like\"]" $+           (exampleJSON |-- ["float-like"]) `shouldBe` (1.2 :: Float)+      it "|-- [\"object-like\", \"string-like\"]" $+           (exampleJSON |-- ["object-like", "string-like"]) `shouldBe` ("this is string" :: String)+      it "|-- [\"object-like\", \"int-like\"]" $+           (exampleJSON |-- ["object-like", "int-like"]) `shouldBe` (42 :: Int)+      +     +      +