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Code Issues 117 Pull Requests 5 Packages Projects Releases 5 Wiki Activity

Refactor/Cleanup layoutPatternBindFinal

pull/35/head
Lennart Spitzner 2017-03-06 15:55:12 +01:00
parent af38c547e5
commit df422ffa5f
1 changed files with 14 additions and 47 deletions
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59
src/Language/Haskell/Brittany/Layouters/Decl.hs
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@ -209,6 +209,12 @@ layoutPatternBindFinal alignmentToken binderDoc mPatDoc clauseDocs mWhereDocs =
$ return
<$> ws
]
let singleLineGuardsDoc guards = appSep $ case guards of
[] -> docEmpty
[g] -> docSeq [appSep $ docLit $ Text.pack "|", return g]
gs -> docSeq
$ [appSep $ docLit $ Text.pack "|"]
++ List.intersperse docCommaSep (return <$> gs)
docAlt
$ -- one-line solution
[ docCols
@ -221,16 +227,7 @@ layoutPatternBindFinal alignmentToken binderDoc mPatDoc clauseDocs mWhereDocs =
]
]
| [(guards, body, _bodyRaw)] <- [clauseDocs]
, let
guardPart = case guards of
[] -> docEmpty
[g] ->
docSeq [appSep $ docLit $ Text.pack "|", return g, docSeparator]
gs ->
docSeq
$ [appSep $ docLit $ Text.pack "|"]
++ List.intersperse docCommaSep (return <$> gs)
++ [docSeparator]
, let guardPart = singleLineGuardsDoc guards
, wherePart <- case mWhereDocs of
Nothing -> return @[] $ docEmpty
Just [w] -> return @[] $ docSeq
@ -251,16 +248,7 @@ layoutPatternBindFinal alignmentToken binderDoc mPatDoc clauseDocs mWhereDocs =
]
++ wherePartMultiLine
| [(guards, body, _bodyRaw)] <- [clauseDocs]
, let
guardPart = case guards of
[] -> docEmpty
[g] ->
docSeq [appSep $ docLit $ Text.pack "|", return g, docSeparator]
gs ->
docSeq
$ [appSep $ docLit $ Text.pack "|"]
++ List.intersperse docCommaSep (return <$> gs)
++ [docSeparator]
, let guardPart = singleLineGuardsDoc guards
, Data.Maybe.isJust mWhereDocs
]
++ -- two-line solution + where in next line(s)
@ -271,23 +259,14 @@ layoutPatternBindFinal alignmentToken binderDoc mPatDoc clauseDocs mWhereDocs =
]
++ wherePartMultiLine
| [(guards, body, _bodyRaw)] <- [clauseDocs]
, let
guardPart = case guards of
[] -> docEmpty
[g] ->
docSeq [appSep $ docLit $ Text.pack "|", return g, docSeparator]
gs ->
docSeq
$ [appSep $ docLit $ Text.pack "|"]
++ List.intersperse docCommaSep (return <$> gs)
++ [docSeparator]
, let guardPart = singleLineGuardsDoc guards
]
++ -- pattern and exactly one clause in single line, body as par;
-- where in following lines
[ docLines
$ [ docCols
(ColBindingLine alignmentToken)
[ docSeq (patPartInline ++ [appSep guardPart])
[ docSeq (patPartInline ++ [guardPart])
, docSeq
[ appSep $ return binderDoc
, docForceParSpacing $ docAddBaseY BrIndentRegular $ return body
@ -300,13 +279,7 @@ layoutPatternBindFinal alignmentToken binderDoc mPatDoc clauseDocs mWhereDocs =
-- ]
++ wherePartMultiLine
| [(guards, body, _bodyRaw)] <- [clauseDocs]
, let
guardPart = case guards of
[] -> docEmpty
[g] -> docSeq [appSep $ docLit $ Text.pack "|", return g]
gs -> docSeq $ [appSep $ docLit $ Text.pack "|"] ++ List.intersperse
docCommaSep
(return <$> gs)
, let guardPart = singleLineGuardsDoc guards
]
++ -- pattern and exactly one clause in single line, body in new line.
[ docLines
@ -317,19 +290,13 @@ layoutPatternBindFinal alignmentToken binderDoc mPatDoc clauseDocs mWhereDocs =
]
++ wherePartMultiLine
| [(guards, body, _)] <- [clauseDocs]
, let
guardPart = case guards of
[] -> docEmpty
[g] -> docSeq [appSep $ docLit $ Text.pack "|", return g]
gs -> docSeq $ [appSep $ docLit $ Text.pack "|"] ++ List.intersperse
docCommaSep
(return <$> gs)
, let guardPart = singleLineGuardsDoc guards
]
++ -- conservative approach: everything starts on the left.
[ docLines
$ [ patPartParWrap
$ docEnsureIndent BrIndentRegular
$ docLines
$ fmap (docEnsureIndent BrIndentRegular)
$ clauseDocs
>>= \(guardDocs, bodyDoc, _) ->
( case guardDocs of