mirror of
https://github.com/GrammaticalFramework/gf-core.git
synced 2026-05-07 02:02:51 -06:00
GF/src is now for 2.9, and the new sources are in src-3.0 - keep it this way until the release of GF 3
This commit is contained in:
aarne
376
src-3.0/GF/Canon/PrintGFC.hs
Normal file
376
src-3.0/GF/Canon/PrintGFC.hs
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@@ -0,0 +1,376 @@
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module GF.Canon.PrintGFC where
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-- pretty-printer generated by the BNF converter, except handhacked spacing --H
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import GF.Infra.Ident --H
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import GF.Canon.AbsGFC
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import Data.Char
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-- the top-level printing method
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printTree :: Print a => a -> String
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printTree = render . prt 0
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type Doc = [ShowS] -> [ShowS]
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doc :: ShowS -> Doc
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doc = (:)
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docs :: ShowS -> Doc
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docs x y = concatD [spc, doc x, spc ] y
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spc = doc (showString "&")
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render :: Doc -> String
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render d = rend 0 (map ($ "") $ d []) "" where
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rend i ss = case ss of
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"*" :ts -> realnew . rend i ts --H
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"&":"&":ts -> showChar ' ' . rend i ts --H
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"&" :ts -> rend i ts --H
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t :ts -> showString t . rend i ts
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_ -> id
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realnew = showChar '\n' --H
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{-
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render :: Doc -> String
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render d = rend 0 (map ($ "") $ d []) "" where
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rend i ss = case ss of
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"*NEW" :ts -> realnew . rend i ts --H
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"<" :ts -> showString "<" . rend i ts --H
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"$" :ts -> showString "$" . rend i ts --H
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"?" :ts -> showString "?" . rend i ts --H
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"[" :ts -> showChar '[' . rend i ts
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"(" :ts -> showChar '(' . rend i ts
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"{" :ts -> showChar '{' . new (i+1) . rend (i+1) ts
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"}" : ";":ts -> new (i-1) . showChar '}' . showChar ';' . new (i-1) . rend (i-1) ts
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"}" :ts -> new (i-1) . showChar '}' . new (i-1) . rend (i-1) ts
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";" :ts -> showChar ';' . new i . rend i ts
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t : "@" :ts -> showString t . showChar '@' . rend i ts
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t : "," :ts -> showString t . showChar ',' . rend i ts
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t : ")" :ts -> showString t . showChar ')' . rend i ts
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t : "]" :ts -> showString t . showChar ']' . rend i ts
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t : ">" :ts -> showString t . showChar '>' . rend i ts --H
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t : "." :ts -> showString t . showChar '.' . rend i ts --H
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t@"=>" :ts -> showString t . rend i ts --H
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t@"->" :ts -> showString t . rend i ts --H
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t :ts -> realspace t . rend i ts --H
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_ -> id
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space t = showString t . showChar ' ' -- H
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realspace t = showString t . (\s -> if null s then "" else (' ':s)) -- H
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new i s = s -- H
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realnew = showChar '\n' --H
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-}
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parenth :: Doc -> Doc
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parenth ss = doc (showChar '(') . ss . doc (showChar ')')
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concatS :: [ShowS] -> ShowS
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concatS = foldr (.) id
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concatD :: [Doc] -> Doc
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concatD = foldr (.) id
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replicateS :: Int -> ShowS -> ShowS
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replicateS n f = concatS (replicate n f)
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-- the printer class does the job
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class Print a where
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prt :: Int -> a -> Doc
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prtList :: [a] -> Doc
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prtList = concatD . map (prt 0)
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instance Print a => Print [a] where
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prt _ = prtList
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instance Print Char where
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prt _ s = doc (showChar '\'' . mkEsc '\'' s . showChar '\'')
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prtList s = doc (showChar '"' . concatS (map (mkEsc '"') s) . showChar '"')
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mkEsc :: Char -> Char -> ShowS
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mkEsc q s = case s of
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_ | s == q -> showChar '\\' . showChar s
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'\\'-> showString "\\\\"
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'\n' -> showString "\\n"
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'\t' -> showString "\\t"
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_ -> showChar s
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prPrec :: Int -> Int -> Doc -> Doc
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prPrec i j = if j<i then parenth else id
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instance Print Integer where
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prt _ x = docs (shows x)
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instance Print Double where
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prt _ x = docs (shows x)
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instance Print Ident where
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prt _ i = docs (showString $ prIdent i) -- H
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prtList es = case es of
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[] -> (concatD [])
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[x] -> (concatD [prt 0 x])
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x:xs -> (concatD [prt 0 x , doc (showString ",") , prt 0 xs])
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instance Print Canon where
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prt i e = case e of
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MGr ids id modules -> prPrec i 0 (concatD [spc, doc (showString "grammar") , spc, prt 0 ids , spc , doc (showString "of") , spc, prt 0 id , doc (showString ";") , prt 0 modules])
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Gr modules -> prPrec i 0 (concatD [prt 0 modules])
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instance Print Line where
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prt i e = case e of
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LMulti ids id -> prPrec i 0 (concatD [spc, doc (showString "grammar") , spc, prt 0 ids , spc, doc (showString "of") , spc, prt 0 id , doc (showString ";")])
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LHeader modtype extend open -> prPrec i 0 (concatD [prt 0 modtype , doc (showString "=") , prt 0 extend , prt 0 open , doc (showString "{")])
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LFlag flag -> prPrec i 0 (concatD [prt 0 flag , doc (showString ";")])
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LDef def -> prPrec i 0 (concatD [prt 0 def , doc (showString ";")])
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LEnd -> prPrec i 0 (concatD [doc (showString "}")])
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instance Print Module where
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prt i e = case e of
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Mod modtype extend open flags defs -> prPrec i 0 (concatD [prt 0 modtype , doc (showString "=") , prt 0 extend , prt 0 open , doc (showString "{") , prt 0 flags , prt 0 defs , doc (showString "}")])
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prtList es = case es of
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[] -> (concatD [])
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x:xs -> (concatD [prt 0 x , prt 0 xs])
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instance Print ModType where
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prt i e = case e of
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MTAbs id -> prPrec i 0 (concatD [spc, doc (showString "abstract") , spc , prt 0 id])
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MTCnc id0 id -> prPrec i 0 (concatD [spc, doc (showString "concrete") , spc, prt 0 id0 , spc, doc (showString "of") , spc, prt 0 id])
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MTRes id -> prPrec i 0 (concatD [spc, doc (showString "resource") , spc, prt 0 id])
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MTTrans id0 id1 id -> prPrec i 0 (concatD [spc, doc (showString "transfer") , spc, prt 0 id0 , doc (showString ":") , prt 0 id1 , doc (showString "->") , prt 0 id])
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instance Print Extend where
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prt i e = case e of
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Ext ids -> prPrec i 0 (concatD [prt 0 ids , doc (showString "**")])
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NoExt -> prPrec i 0 (concatD [])
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instance Print Open where
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prt i e = case e of
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Opens ids -> prPrec i 0 (concatD [spc, doc (showString "open") , spc, prt 0 ids , docs (showString "in")])
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NoOpens -> prPrec i 0 (concatD [])
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instance Print Flag where
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prt i e = case e of
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Flg id0 id -> prPrec i 0 (concatD [spc, doc (showString "flags") , spc, prt 0 id0 , doc (showString "=") , prt 0 id])
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prtList es = case es of
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[] -> (concatD [])
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x:xs -> (concatD [prt 0 x , doc (showString ";") , prt 0 xs])
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instance Print Def where
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prt i e = case e of
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AbsDCat id decls cidents -> prPrec i 0 (concatD [docs (showString "cat") , prt 0 id , doc (showString "[") , prt 0 decls , doc (showString "]") , doc (showString "=") , prt 0 cidents])
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AbsDFun id exp0 exp -> prPrec i 0 (concatD [docs (showString "fun") , prt 0 id , doc (showString ":") , prt 0 exp0 , doc (showString "=") , prt 0 exp])
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AbsDTrans id exp -> prPrec i 0 (concatD [docs (showString "transfer") , prt 0 id , doc (showString "=") , prt 0 exp])
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ResDPar id pardefs -> prPrec i 0 (concatD [docs (showString "param") , prt 0 id , doc (showString "=") , prt 0 pardefs])
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ResDOper id ctype term -> prPrec i 0 (concatD [docs (showString "oper") , prt 0 id , doc (showString ":") , prt 0 ctype , doc (showString "=") , prt 0 term])
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CncDCat id ctype term0 term -> prPrec i 0 (concatD [docs (showString "lincat") , prt 0 id , doc (showString "=") , prt 0 ctype , doc (showString "=") , prt 0 term0 , doc (showString ";") , prt 0 term])
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CncDFun id cident argvars term0 term -> prPrec i 0 (concatD [docs (showString "lin") , prt 0 id , doc (showString ":") , prt 0 cident , doc (showString "=") , doc (showString "\\") , prt 0 argvars , doc (showString "->") , prt 0 term0 , doc (showString ";") , prt 0 term])
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AnyDInd id0 status id -> prPrec i 0 (concatD [prt 0 id0 , prt 0 status , docs (showString "in") , prt 0 id])
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prtList es = case es of
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[] -> (concatD [])
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x:xs -> (concatD [prt 0 x , doc (showString ";"), doc (showString "*") , prt 0 xs]) -- H
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instance Print ParDef where
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prt i e = case e of
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ParD id ctypes -> prPrec i 0 (concatD [prt 0 id , prt 0 ctypes])
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prtList es = case es of
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[] -> (concatD [])
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[x] -> (concatD [prt 0 x])
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x:xs -> (concatD [prt 0 x , doc (showString "|") , prt 0 xs])
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instance Print Status where
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prt i e = case e of
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Canon -> prPrec i 0 (concatD [docs (showString "data")])
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NonCan -> prPrec i 0 (concatD [])
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instance Print CIdent where
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prt i e = case e of
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CIQ id0 id -> prPrec i 0 (concatD [prt 0 id0 , doc (showString ".") , prt 0 id])
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prtList es = case es of
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[] -> (concatD [])
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x:xs -> (concatD [prt 0 x , prt 0 xs])
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instance Print Exp where
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prt i e = case e of
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EApp exp0 exp -> prPrec i 1 (concatD [prt 1 exp0 , prt 2 exp])
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EProd id exp0 exp -> prPrec i 0 (concatD [doc (showString "(") , prt 0 id , doc (showString ":") , prt 0 exp0 , doc (showString ")") , doc (showString "->") , prt 0 exp])
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EAbs id exp -> prPrec i 0 (concatD [doc (showString "\\") , prt 0 id , doc (showString "->") , prt 0 exp])
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EAtom atom -> prPrec i 2 (concatD [prt 0 atom])
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EData -> prPrec i 2 (concatD [docs (showString "data")])
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EEq equations -> prPrec i 0 (concatD [doc (showString "{") , prt 0 equations , doc (showString "}")])
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instance Print Sort where
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prt i e = case e of
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SType -> prPrec i 0 (concatD [docs (showString "Type")])
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instance Print Equation where
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prt i e = case e of
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Equ apatts exp -> prPrec i 0 (concatD [prt 0 apatts , doc (showString "->") , prt 0 exp])
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prtList es = case es of
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[] -> (concatD [])
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x:xs -> (concatD [prt 0 x , doc (showString ";") , prt 0 xs])
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instance Print APatt where
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prt i e = case e of
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APC cident apatts -> prPrec i 0 (concatD [doc (showString "(") , prt 0 cident , prt 0 apatts , doc (showString ")")])
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APV id -> prPrec i 0 (concatD [prt 0 id])
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APS str -> prPrec i 0 (concatD [prt 0 str])
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API n -> prPrec i 0 (concatD [prt 0 n])
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APF n -> prPrec i 0 (concatD [prt 0 n])
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APW -> prPrec i 0 (concatD [doc (showString "_")])
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prtList es = case es of
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[] -> (concatD [])
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x:xs -> (concatD [prt 0 x , prt 0 xs])
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instance Print Atom where
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prt i e = case e of
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AC cident -> prPrec i 0 (concatD [prt 0 cident])
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AD cident -> prPrec i 0 (concatD [doc (showString "<") , prt 0 cident , doc (showString ">")])
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AV id -> prPrec i 0 (concatD [doc (showString "$") , prt 0 id])
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AM n -> prPrec i 0 (concatD [doc (showString "?") , prt 0 n])
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AS str -> prPrec i 0 (concatD [prt 0 str])
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AI n -> prPrec i 0 (concatD [prt 0 n])
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AT sort -> prPrec i 0 (concatD [prt 0 sort])
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instance Print Decl where
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prt i e = case e of
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Decl id exp -> prPrec i 0 (concatD [prt 0 id , doc (showString ":") , prt 0 exp])
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prtList es = case es of
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[] -> (concatD [])
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[x] -> (concatD [prt 0 x])
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x:xs -> (concatD [prt 0 x , doc (showString ";") , prt 0 xs])
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instance Print CType where
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prt i e = case e of
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RecType labellings -> prPrec i 0 (concatD [doc (showString "{") , prt 0 labellings , doc (showString "}")])
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Table ctype0 ctype -> prPrec i 0 (concatD [doc (showString "(") , prt 0 ctype0 , doc (showString "=>") , prt 0 ctype , doc (showString ")")])
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Cn cident -> prPrec i 0 (concatD [prt 0 cident])
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TStr -> prPrec i 0 (concatD [docs (showString "Str")])
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TInts n -> prPrec i 0 (concatD [docs (showString "Ints") , prt 0 n])
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prtList es = case es of
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[] -> (concatD [])
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x:xs -> (concatD [prt 0 x , prt 0 xs])
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instance Print Labelling where
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prt i e = case e of
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Lbg label ctype -> prPrec i 0 (concatD [prt 0 label , doc (showString ":") , prt 0 ctype])
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prtList es = case es of
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[] -> (concatD [])
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[x] -> (concatD [prt 0 x])
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x:xs -> (concatD [prt 0 x , doc (showString ";") , prt 0 xs])
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instance Print Term where
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prt i e = case e of
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Arg argvar -> prPrec i 2 (concatD [prt 0 argvar])
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I cident -> prPrec i 2 (concatD [prt 0 cident])
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Par cident terms -> prPrec i 2 (concatD [doc (showString "<") , prt 0 cident , prt 2 terms , doc (showString ">")])
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LI id -> prPrec i 2 (concatD [doc (showString "$") , prt 0 id])
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R assigns -> prPrec i 2 (concatD [doc (showString "{") , prt 0 assigns , doc (showString "}")])
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P term label -> prPrec i 1 (concatD [prt 2 term , doc (showString ".") , prt 0 label])
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T ctype cases -> prPrec i 1 (concatD [docs (showString "table") , prt 0 ctype , doc (showString "{") , prt 0 cases , doc (showString "}")])
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V ctype terms -> prPrec i 1 (concatD [docs (showString "table") , prt 0 ctype , doc (showString "[") , prt 2 terms , doc (showString "]")])
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S term0 term -> prPrec i 1 (concatD [prt 1 term0 , doc (showString "!") , prt 2 term])
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C term0 term -> prPrec i 0 (concatD [prt 0 term0 , doc (showString "++") , prt 1 term])
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FV terms -> prPrec i 1 (concatD [docs (showString "variants") , doc (showString "{") , prt 2 terms , doc (showString "}")])
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EInt n -> prPrec i 2 (concatD [prt 0 n])
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EFloat n -> prPrec i 2 (concatD [prt 0 n])
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K tokn -> prPrec i 2 (concatD [prt 0 tokn])
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E -> prPrec i 2 (concatD [doc (showString "[") , doc (showString "]")])
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prtList es = case es of
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[] -> (concatD [])
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x:xs -> (concatD [prt 2 x , prt 2 xs])
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instance Print Tokn where
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prt i e = case e of
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KS str -> prPrec i 0 (concatD [prt 0 str])
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KP strs variants -> prPrec i 0 (concatD [doc (showString "[") , docs (showString "pre") , prt 0 strs , doc (showString "{") , prt 0 variants , doc (showString "}") , doc (showString "]")])
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KM str -> prPrec i 0 (concatD [prt 0 str])
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instance Print Assign where
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prt i e = case e of
|
||||
Ass label term -> prPrec i 0 (concatD [prt 0 label , doc (showString "=") , prt 0 term])
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||||
|
||||
prtList es = case es of
|
||||
[] -> (concatD [])
|
||||
[x] -> (concatD [prt 0 x])
|
||||
x:xs -> (concatD [prt 0 x , doc (showString ";") , prt 0 xs])
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instance Print Case where
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prt i e = case e of
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Cas patts term -> prPrec i 0 (concatD [prt 0 patts , doc (showString "=>") , prt 0 term])
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||||
|
||||
prtList es = case es of
|
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[] -> (concatD [])
|
||||
[x] -> (concatD [prt 0 x])
|
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x:xs -> (concatD [prt 0 x , doc (showString ";") , prt 0 xs])
|
||||
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instance Print Variant where
|
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prt i e = case e of
|
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Var strs0 strs -> prPrec i 0 (concatD [prt 0 strs0 , doc (showString "/") , prt 0 strs])
|
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|
||||
prtList es = case es of
|
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[] -> (concatD [])
|
||||
[x] -> (concatD [prt 0 x])
|
||||
x:xs -> (concatD [prt 0 x , doc (showString ";") , prt 0 xs])
|
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|
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instance Print Label where
|
||||
prt i e = case e of
|
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L id -> prPrec i 0 (concatD [prt 0 id])
|
||||
LV n -> prPrec i 0 (concatD [doc (showString "$") , prt 0 n])
|
||||
|
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instance Print ArgVar where
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prt i e = case e of
|
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A id n -> prPrec i 0 (concatD [prt 0 id , doc (showString "@") , prt 0 n])
|
||||
AB id n0 n -> prPrec i 0 (concatD [prt 0 id , doc (showString "+") , prt 0 n0 , doc (showString "@") , prt 0 n])
|
||||
|
||||
prtList es = case es of
|
||||
[] -> (concatD [])
|
||||
[x] -> (concatD [prt 0 x])
|
||||
x:xs -> (concatD [prt 0 x , doc (showString ",") , prt 0 xs])
|
||||
|
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instance Print Patt where
|
||||
prt i e = case e of
|
||||
PC cident patts -> prPrec i 0 (concatD [doc (showString "(") , prt 0 cident , prt 0 patts , doc (showString ")")])
|
||||
PV id -> prPrec i 0 (concatD [prt 0 id])
|
||||
PW -> prPrec i 0 (concatD [docs (showString "_")])
|
||||
PR pattassigns -> prPrec i 0 (concatD [doc (showString "{") , prt 0 pattassigns , doc (showString "}")])
|
||||
PI n -> prPrec i 0 (concatD [prt 0 n])
|
||||
PF n -> prPrec i 0 (concatD [prt 0 n])
|
||||
|
||||
prtList es = case es of
|
||||
[] -> (concatD [])
|
||||
x:xs -> (concatD [prt 0 x , prt 0 xs])
|
||||
|
||||
instance Print PattAssign where
|
||||
prt i e = case e of
|
||||
PAss label patt -> prPrec i 0 (concatD [prt 0 label , doc (showString "=") , prt 0 patt])
|
||||
|
||||
prtList es = case es of
|
||||
[] -> (concatD [])
|
||||
[x] -> (concatD [prt 0 x])
|
||||
x:xs -> (concatD [prt 0 x , doc (showString ";") , prt 0 xs])
|
||||
|
||||
|
||||
Reference in New Issue
Block a user