git.iko.soy/rowtype-yoga/purescript-native
on 4fd30a9 help sign in
rowtype-yoga/purescript-native/src/Language/PureScript/Sugar.hs
54 lines 1.7 kB history raw
1-----------------------------------------------------------------------------
2--
3-- Module : Language.PureScript.Sugar
4-- Copyright : (c) Phil Freeman 2013
5-- License : MIT
6--
7-- Maintainer : Phil Freeman <paf31@cantab.net>
8-- Stability : experimental
9-- Portability :
10--
11-- |
12-- Desugaring passes
13--
14-----------------------------------------------------------------------------
16module Language.PureScript.Sugar (desugar, module S) where
18import Control.Monad
20import Language.PureScript.Declarations
22import Language.PureScript.Sugar.Operators as S
23import Language.PureScript.Sugar.DoNotation as S
24import Language.PureScript.Sugar.CaseDeclarations as S
25import Language.PureScript.Sugar.TypeDeclarations as S
26import Language.PureScript.Sugar.BindingGroups as S
27import Language.PureScript.Sugar.TypeClasses as S
28import Language.PureScript.Sugar.Names as S
30-- |
31-- The desugaring pipeline proceeds as follows:
32--
33-- * Introduce type synonyms for type class dictionaries
34--
35-- * Rebracket user-defined binary operators
36--
37-- * Desugar do-notation using the @Prelude.Monad@ type class
38--
39-- * Desugar top-level case declarations into explicit case expressions
40--
41-- * Desugar type declarations into value declarations with explicit type annotations
42--
43-- * Group mutually recursive value and data declarations into binding groups.
44--
45-- * Qualify any unqualified names and types
46--
47desugar :: [Module] -> Either String [Module]
48desugar = desugarDo
49 >=> desugarCasesModule
50 >=> desugarTypeDeclarationsModule
51 >=> desugarImports
52 >=> rebracket
53 >=> desugarTypeClasses
54 >=> createBindingGroupsModule