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🔥 Rendering.SExpression.
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@ -136,7 +136,6 @@ library
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, Rendering.Imports
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, Rendering.JSON
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, Rendering.Renderer
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, Rendering.SExpression
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, Rendering.Symbol
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, Rendering.TOC
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-- High-level flow & operational functionality (logging, stats, etc.)
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@ -3,9 +3,6 @@ module Rendering.Renderer
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( DiffRenderer(..)
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, TermRenderer(..)
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, SomeRenderer(..)
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, renderSExpressionDiff
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, renderSExpressionTerm
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, renderSExpressionAST
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, renderJSONDiff
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, renderJSONDiffs
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, renderJSONTerm
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@ -30,7 +27,6 @@ import Data.Output
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import Rendering.Graph as R
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import Rendering.Imports as R
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import Rendering.JSON as R
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import Rendering.SExpression as R
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import Rendering.Symbol as R
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import Rendering.TOC as R
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@ -1,54 +0,0 @@
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{-# LANGUAGE GADTs, RankNTypes, ScopedTypeVariables #-}
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module Rendering.SExpression
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( renderSExpressionDiff
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, renderSExpressionTerm
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, renderSExpressionAST
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) where
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import Prologue
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import Data.ByteString.Char8
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import Data.Diff
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import Data.Patch
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import Data.Record
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import Data.AST
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import Data.Term
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import Prelude hiding (replicate)
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-- | Returns a ByteString SExpression formatted diff.
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renderSExpressionDiff :: (ConstrainAll Show fields, Foldable syntax, Functor syntax) => Diff syntax (Record fields) (Record fields) -> ByteString
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renderSExpressionDiff diff = cata printDiffF diff 0 <> "\n"
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-- | Returns a ByteString SExpression formatted term (generalized).
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renderSExpressionTerm :: (ConstrainAll Show fields, Foldable syntax, Functor syntax) => Term syntax (Record fields) -> ByteString
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renderSExpressionTerm = toSExpression showRecord
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-- | Returns a ByteString SExpression formatted term (specialized)
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renderSExpressionAST :: Show grammar => Term [] (Node grammar) -> ByteString
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renderSExpressionAST = toSExpression (pack . show . nodeSymbol)
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toSExpression :: (Base t ~ TermF syntax ann, Foldable syntax, Recursive t) => (ann -> ByteString) -> t -> ByteString
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toSExpression showAnn term = cata (\ term n -> nl n <> replicate (2 * n) ' ' <> printTermF showAnn term n) term 0 <> "\n"
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printDiffF :: (ConstrainAll Show fields, Foldable syntax) => DiffF syntax (Record fields) (Record fields) (Int -> ByteString) -> Int -> ByteString
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printDiffF diff n = case diff of
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Patch (Delete term) -> nl n <> pad (n - 1) <> "{-" <> printTermF showRecord term n <> "-}"
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Patch (Insert term) -> nl n <> pad (n - 1) <> "{+" <> printTermF showRecord term n <> "+}"
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Patch (Replace term1 term2) -> nl n <> pad (n - 1) <> "{ " <> printTermF showRecord term1 n
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<> nl (n + 1) <> pad (n - 1) <> "->" <> printTermF showRecord term2 n <> " }"
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Merge (In (_, ann) syntax) -> nl n <> pad n <> "(" <> showRecord ann <> foldMap (\ d -> d (n + 1)) syntax <> ")"
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printTermF :: Foldable syntax => (ann -> ByteString) -> TermF syntax ann (Int -> ByteString) -> Int -> ByteString
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printTermF f (In ann syntax) n = "(" <> f ann <> foldMap (\t -> t (succ n)) syntax <> ")"
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nl :: Int -> ByteString
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nl n | n <= 0 = ""
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| otherwise = "\n"
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pad :: Int -> ByteString
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pad n = replicate (2 * n) ' '
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showRecord :: ConstrainAll Show fields => Record fields -> ByteString
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showRecord Nil = ""
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showRecord (only :. Nil) = pack (show only)
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showRecord (first :. rest) = pack (show first) <> " " <> showRecord rest
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