Hello world
This commit is contained in:
commit
f42c7ce035
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||||||
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.stack-work/
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||||||
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dhall-typescript.cabal
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||||||
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*~
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||||||
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# Changelog for dhall-typescript
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||||||
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||||||
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## Unreleased changes
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||||||
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Copyright Frederik Hangøj Iversen (c) 2020
|
||||||
|
|
||||||
|
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 Frederik Hangøj Iversen 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.
|
|
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||||||
|
# dhall-typescript
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||||||
|
|
||||||
|
$ dhall-typescript <<< '< a : Integer | b : Text | c : { m : Natural } >'
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{ a: number; } | { b: string; } | { c: { m: number; }; }
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||||||
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module Main where
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||||||
|
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||||||
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import qualified Dhall.TypeScript
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||||||
|
|
||||||
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main :: IO ()
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||||||
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main = Dhall.TypeScript.main
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||||||
|
name: dhall-typescript
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||||||
|
version: 0.1.0.0
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||||||
|
github: "fredefox/dhall-typescript"
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||||||
|
license: BSD3
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||||||
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author: "Frederik Hangøj Iversen"
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||||||
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maintainer: "fhi.1990@gmail.com"
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||||||
|
copyright: "2020 Frederik Hangøj Iversen"
|
||||||
|
|
||||||
|
extra-source-files:
|
||||||
|
- README.md
|
||||||
|
- ChangeLog.md
|
||||||
|
|
||||||
|
# Metadata used when publishing your package
|
||||||
|
# synopsis: Short description of your package
|
||||||
|
# category: Web
|
||||||
|
|
||||||
|
# To avoid duplicated efforts in documentation and dealing with the
|
||||||
|
# complications of embedding Haddock markup inside cabal files, it is
|
||||||
|
# common to point users to the README.md file.
|
||||||
|
description: Please see the README on GitHub at <https://github.com/fredefox/dhall-typescript#readme>
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||||||
|
|
||||||
|
dependencies:
|
||||||
|
- base >= 4.7 && < 5
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||||||
|
- dhall
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||||||
|
- prettyprinter
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||||||
|
- text
|
||||||
|
- containers
|
||||||
|
|
||||||
|
default-extensions:
|
||||||
|
- ConstraintKinds
|
||||||
|
- DeriveGeneric
|
||||||
|
- FlexibleContexts
|
||||||
|
- FlexibleInstances
|
||||||
|
- GADTs
|
||||||
|
- GeneralizedNewtypeDeriving
|
||||||
|
- LambdaCase
|
||||||
|
- NamedWildCards
|
||||||
|
- OverloadedStrings
|
||||||
|
- ScopedTypeVariables
|
||||||
|
- StandaloneDeriving
|
||||||
|
- TupleSections
|
||||||
|
- TypeApplications
|
||||||
|
- TypeFamilies
|
||||||
|
- TypeSynonymInstances
|
||||||
|
- UnicodeSyntax
|
||||||
|
- ViewPatterns
|
||||||
|
- DerivingStrategies
|
||||||
|
- EmptyCase
|
||||||
|
|
||||||
|
library:
|
||||||
|
source-dirs: src
|
||||||
|
|
||||||
|
executables:
|
||||||
|
dhall-typescript:
|
||||||
|
main: Main.hs
|
||||||
|
source-dirs: app
|
||||||
|
ghc-options:
|
||||||
|
- -threaded
|
||||||
|
- -rtsopts
|
||||||
|
- -with-rtsopts=-N
|
||||||
|
dependencies:
|
||||||
|
- dhall-typescript
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|
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|
||||||
|
module Data.Language.TypeScript
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||||||
|
( Statement(..)
|
||||||
|
, Type(..)
|
||||||
|
, Name(..)
|
||||||
|
, TypeDeclaration(..)
|
||||||
|
, Primitive(..)
|
||||||
|
, Object(..)
|
||||||
|
, Union(..)
|
||||||
|
) where
|
||||||
|
{-# OPTIONS_GHC -Wall #-}
|
||||||
|
|
||||||
|
import Data.Text (Text)
|
||||||
|
import Data.Text.Prettyprint.Doc
|
||||||
|
import Data.Map (Map)
|
||||||
|
import qualified Data.Map as Map
|
||||||
|
import Data.List
|
||||||
|
|
||||||
|
deriving stock instance Show Name
|
||||||
|
newtype Name = Name Text
|
||||||
|
|
||||||
|
deriving stock instance Show Statement
|
||||||
|
data Statement = StatementTypeDeclaration TypeDeclaration
|
||||||
|
|
||||||
|
instance Pretty Name where
|
||||||
|
pretty (Name nm) = pretty nm
|
||||||
|
|
||||||
|
data TypeDeclaration = TypeDeclaration Name Type
|
||||||
|
deriving stock instance Show TypeDeclaration
|
||||||
|
instance Pretty TypeDeclaration where
|
||||||
|
pretty = error "TODO"
|
||||||
|
|
||||||
|
data Primitive = TsText | TsInteger
|
||||||
|
deriving stock instance Show Primitive
|
||||||
|
instance Pretty Primitive where
|
||||||
|
pretty = \case
|
||||||
|
TsText -> "string"
|
||||||
|
TsInteger -> "number"
|
||||||
|
|
||||||
|
newtype Object = Object (Map Text Type)
|
||||||
|
deriving stock instance Show Object
|
||||||
|
instance Pretty Object where
|
||||||
|
pretty (Object m) = vsep $ ["{", nest 2 (vsep docs), "}"]
|
||||||
|
where
|
||||||
|
docs = decl <$> Map.toList m
|
||||||
|
decl :: (Text, Type) -> Doc ann
|
||||||
|
decl (txt, tp) = pretty txt <> ":" <+> pretty tp <> ";"
|
||||||
|
|
||||||
|
newtype Union = Union ([] Type)
|
||||||
|
|
||||||
|
deriving stock instance Show Union
|
||||||
|
instance Pretty Union where
|
||||||
|
pretty (Union tps) = sepBy "|" $ pretty <$> tps
|
||||||
|
|
||||||
|
sepBy :: Doc a -> [Doc a] -> Doc a
|
||||||
|
sepBy x = sep . intersperse x
|
||||||
|
|
||||||
|
data Type = Primitive Primitive | TypeObject Object | TypeUnion Union | Array Type | TypeNamed Name
|
||||||
|
deriving stock instance Show Type
|
||||||
|
instance Pretty Type where
|
||||||
|
pretty = \case
|
||||||
|
Primitive p -> pretty p
|
||||||
|
TypeObject o -> pretty o
|
||||||
|
TypeUnion u -> pretty u
|
||||||
|
Array a -> pretty a
|
||||||
|
TypeNamed n -> pretty n
|
||||||
|
|
|
@ -0,0 +1,124 @@
|
||||||
|
module Dhall.TypeScript (main) where
|
||||||
|
{-# OPTIONS_GHC -Wall #-}
|
||||||
|
|
||||||
|
import qualified Dhall.Core as Dhall
|
||||||
|
import qualified Dhall.Parser
|
||||||
|
import Data.Maybe (fromMaybe)
|
||||||
|
import qualified Data.Text.IO as Text
|
||||||
|
import qualified Data.Language.TypeScript as TypeScript
|
||||||
|
import qualified Data.Text.Prettyprint.Doc as Pretty
|
||||||
|
import qualified Data.Text.Prettyprint.Doc.Render.Text as Pretty
|
||||||
|
import qualified Data.Map as Map
|
||||||
|
import Data.Text (Text)
|
||||||
|
import qualified Dhall.Map as Dhall
|
||||||
|
import Control.Monad
|
||||||
|
|
||||||
|
main :: IO ()
|
||||||
|
main = do
|
||||||
|
txt <- Text.getContents
|
||||||
|
e <- Dhall.throws (Dhall.Parser.exprFromText (fromMaybe "(stdin)" mFilePath) txt)
|
||||||
|
case fromDhall e of
|
||||||
|
Nothing -> Text.putStrLn "Could not convert expression"
|
||||||
|
Just expr -> Pretty.putDoc $ Pretty.pretty expr <> "\n"
|
||||||
|
|
||||||
|
fromDhall :: Show a => Show b => Dhall.Expr a b -> Maybe TypeScript.Type
|
||||||
|
fromDhall e = case e of
|
||||||
|
Dhall.Annot{} -> err
|
||||||
|
Dhall.App{} -> err
|
||||||
|
Dhall.Assert{} -> err
|
||||||
|
Dhall.BoolAnd{} -> err
|
||||||
|
Dhall.BoolEQ{} -> err
|
||||||
|
Dhall.BoolIf{} -> err
|
||||||
|
Dhall.BoolLit{} -> err
|
||||||
|
Dhall.BoolNE{} -> err
|
||||||
|
Dhall.BoolOr{} -> err
|
||||||
|
Dhall.Bool{} -> err
|
||||||
|
Dhall.CombineTypes{} -> err
|
||||||
|
Dhall.Combine{} -> err
|
||||||
|
Dhall.Const{} -> err
|
||||||
|
Dhall.DoubleLit{} -> err
|
||||||
|
Dhall.DoubleShow{} -> err
|
||||||
|
Dhall.Double{} -> err
|
||||||
|
Dhall.Embed{} -> err
|
||||||
|
Dhall.Equivalent{} -> err
|
||||||
|
Dhall.Field{} -> err
|
||||||
|
Dhall.ImportAlt{} -> err
|
||||||
|
Dhall.IntegerClamp{} -> err
|
||||||
|
Dhall.IntegerLit{} -> err
|
||||||
|
Dhall.IntegerNegate{} -> err
|
||||||
|
Dhall.IntegerShow{} -> err
|
||||||
|
Dhall.IntegerToDouble{} -> err
|
||||||
|
Dhall.Integer{} -> pure (TypeScript.Primitive TypeScript.TsInteger)
|
||||||
|
Dhall.Lam{} -> err
|
||||||
|
Dhall.Let{} -> err
|
||||||
|
Dhall.ListAppend{} -> err
|
||||||
|
Dhall.ListBuild{} -> err
|
||||||
|
Dhall.ListFold{} -> err
|
||||||
|
Dhall.ListHead{} -> err
|
||||||
|
Dhall.ListIndexed{} -> err
|
||||||
|
Dhall.ListLast{} -> err
|
||||||
|
Dhall.ListLength{} -> err
|
||||||
|
Dhall.ListLit{} -> err
|
||||||
|
Dhall.ListReverse{} -> err
|
||||||
|
Dhall.List{} -> err
|
||||||
|
Dhall.Merge{} -> err
|
||||||
|
Dhall.NaturalBuild{} -> err
|
||||||
|
Dhall.NaturalEven{} -> err
|
||||||
|
Dhall.NaturalFold{} -> err
|
||||||
|
Dhall.NaturalIsZero{} -> err
|
||||||
|
Dhall.NaturalLit{} -> err
|
||||||
|
Dhall.NaturalOdd{} -> err
|
||||||
|
Dhall.NaturalPlus{} -> err
|
||||||
|
Dhall.NaturalShow{} -> err
|
||||||
|
Dhall.NaturalSubtract{} -> err
|
||||||
|
Dhall.NaturalTimes{} -> err
|
||||||
|
Dhall.NaturalToInteger{} -> err
|
||||||
|
Dhall.Natural{} -> pure (TypeScript.Primitive TypeScript.TsInteger)
|
||||||
|
Dhall.None{} -> err
|
||||||
|
Dhall.Note _ e0 -> fromDhall e0
|
||||||
|
Dhall.OptionalBuild{} -> err
|
||||||
|
Dhall.OptionalFold{} -> err
|
||||||
|
Dhall.Optional{} -> err
|
||||||
|
Dhall.Pi{} -> err
|
||||||
|
Dhall.Prefer{} -> err
|
||||||
|
Dhall.Project{} -> err
|
||||||
|
Dhall.RecordCompletion{} -> err
|
||||||
|
Dhall.RecordLit{} -> err
|
||||||
|
Dhall.Record r -> TypeScript.TypeObject <$> fromDhall_Object r
|
||||||
|
Dhall.Some{} -> err
|
||||||
|
Dhall.TextAppend{} -> err
|
||||||
|
Dhall.TextLit{} -> err
|
||||||
|
Dhall.TextShow{} -> err
|
||||||
|
Dhall.Text -> pure $ TypeScript.Primitive TypeScript.TsText
|
||||||
|
Dhall.ToMap{} -> err
|
||||||
|
Dhall.Union u -> TypeScript.TypeUnion <$> fromDhall_Union u
|
||||||
|
Dhall.Var v -> fromDhall_Named v
|
||||||
|
where
|
||||||
|
err = error $ show e
|
||||||
|
|
||||||
|
fromDhall_Union :: forall a b . Show a => Show b => Dhall.Map Text (Maybe (Dhall.Expr a b)) -> Maybe TypeScript.Union
|
||||||
|
-- TODO: Maybe Map.fromList + Dhall.toList is a bit silly here.
|
||||||
|
fromDhall_Union
|
||||||
|
= traverse go . Dhall.toList
|
||||||
|
>=> fmap TypeScript.Union . traverse unionand
|
||||||
|
where
|
||||||
|
-- TODO: Dunno what it means when a dhall union has a Nothing as an entry.
|
||||||
|
go :: (Text, Maybe (Dhall.Expr a b)) -> Maybe (Text, Dhall.Expr a b)
|
||||||
|
go (_, Nothing) = Nothing
|
||||||
|
go (t, Just x) = pure $ (t, x)
|
||||||
|
-- Will fail if `expr` fails to translate.
|
||||||
|
unionand :: (Text, Dhall.Expr a b) -> Maybe TypeScript.Type
|
||||||
|
-- unionand (txt, expr) = (txt,) <$> fromDhall expr
|
||||||
|
unionand (txt, expr) = (\x -> TypeScript.TypeObject $ TypeScript.Object $ Map.singleton txt x) <$> fromDhall expr
|
||||||
|
|
||||||
|
-- TODO: Maybe Map.fromList + Dhall.toList is a bit silly here.
|
||||||
|
fromDhall_Object :: Show a => Show b => Dhall.Map Text (Dhall.Expr a b) -> Maybe TypeScript.Object
|
||||||
|
fromDhall_Object = fmap (TypeScript.Object . Map.fromList) . traverse @_ @Maybe go . Dhall.toList
|
||||||
|
where
|
||||||
|
go (txt, expr) = (txt,) <$> fromDhall expr
|
||||||
|
|
||||||
|
fromDhall_Named :: Dhall.Var -> Maybe TypeScript.Type
|
||||||
|
fromDhall_Named (Dhall.V nm _) = pure $ TypeScript.TypeNamed $ TypeScript.Name nm
|
||||||
|
|
||||||
|
mFilePath :: Maybe FilePath
|
||||||
|
mFilePath = Nothing
|
|
@ -0,0 +1,66 @@
|
||||||
|
# This file was automatically generated by 'stack init'
|
||||||
|
#
|
||||||
|
# Some commonly used options have been documented as comments in this file.
|
||||||
|
# For advanced use and comprehensive documentation of the format, please see:
|
||||||
|
# https://docs.haskellstack.org/en/stable/yaml_configuration/
|
||||||
|
|
||||||
|
# Resolver to choose a 'specific' stackage snapshot or a compiler version.
|
||||||
|
# A snapshot resolver dictates the compiler version and the set of packages
|
||||||
|
# to be used for project dependencies. For example:
|
||||||
|
#
|
||||||
|
# resolver: lts-3.5
|
||||||
|
# resolver: nightly-2015-09-21
|
||||||
|
# resolver: ghc-7.10.2
|
||||||
|
#
|
||||||
|
# The location of a snapshot can be provided as a file or url. Stack assumes
|
||||||
|
# a snapshot provided as a file might change, whereas a url resource does not.
|
||||||
|
#
|
||||||
|
# resolver: ./custom-snapshot.yaml
|
||||||
|
# resolver: https://example.com/snapshots/2018-01-01.yaml
|
||||||
|
resolver: lts-15.0
|
||||||
|
|
||||||
|
# User packages to be built.
|
||||||
|
# Various formats can be used as shown in the example below.
|
||||||
|
#
|
||||||
|
# packages:
|
||||||
|
# - some-directory
|
||||||
|
# - https://example.com/foo/bar/baz-0.0.2.tar.gz
|
||||||
|
# subdirs:
|
||||||
|
# - auto-update
|
||||||
|
# - wai
|
||||||
|
packages:
|
||||||
|
- .
|
||||||
|
# Dependency packages to be pulled from upstream that are not in the resolver.
|
||||||
|
# These entries can reference officially published versions as well as
|
||||||
|
# forks / in-progress versions pinned to a git hash. For example:
|
||||||
|
#
|
||||||
|
# extra-deps:
|
||||||
|
# - acme-missiles-0.3
|
||||||
|
# - git: https://github.com/commercialhaskell/stack.git
|
||||||
|
# commit: e7b331f14bcffb8367cd58fbfc8b40ec7642100a
|
||||||
|
#
|
||||||
|
# extra-deps: []
|
||||||
|
|
||||||
|
# Override default flag values for local packages and extra-deps
|
||||||
|
# flags: {}
|
||||||
|
|
||||||
|
# Extra package databases containing global packages
|
||||||
|
# extra-package-dbs: []
|
||||||
|
|
||||||
|
# Control whether we use the GHC we find on the path
|
||||||
|
# system-ghc: true
|
||||||
|
#
|
||||||
|
# Require a specific version of stack, using version ranges
|
||||||
|
# require-stack-version: -any # Default
|
||||||
|
# require-stack-version: ">=2.1"
|
||||||
|
#
|
||||||
|
# Override the architecture used by stack, especially useful on Windows
|
||||||
|
# arch: i386
|
||||||
|
# arch: x86_64
|
||||||
|
#
|
||||||
|
# Extra directories used by stack for building
|
||||||
|
# extra-include-dirs: [/path/to/dir]
|
||||||
|
# extra-lib-dirs: [/path/to/dir]
|
||||||
|
#
|
||||||
|
# Allow a newer minor version of GHC than the snapshot specifies
|
||||||
|
# compiler-check: newer-minor
|
|
@ -0,0 +1,12 @@
|
||||||
|
# This file was autogenerated by Stack.
|
||||||
|
# You should not edit this file by hand.
|
||||||
|
# For more information, please see the documentation at:
|
||||||
|
# https://docs.haskellstack.org/en/stable/lock_files
|
||||||
|
|
||||||
|
packages: []
|
||||||
|
snapshots:
|
||||||
|
- completed:
|
||||||
|
size: 488576
|
||||||
|
url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/15/0.yaml
|
||||||
|
sha256: e4b6a87b47ec1cf63a7f1a0884a3b276fce2b0d174a10e8753c4f618e7983568
|
||||||
|
original: lts-15.0
|
|
@ -0,0 +1,2 @@
|
||||||
|
main :: IO ()
|
||||||
|
main = putStrLn "Test suite not yet implemented"
|
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Reference in New Issue