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forked from GitHub/gf-core

slight change in gfcc syntax and evaluation

This commit is contained in:
aarne
2006-10-07 14:08:58 +00:00
parent 2f284deb1c
commit f9cc79eba6
12 changed files with 678 additions and 164 deletions

View File

@@ -30,7 +30,7 @@ render d = rend 0 (map ($ "") $ d []) "" where
t :ts -> space t . rend i ts
_ -> id
new i = showChar '\n' . replicateS (2*i) (showChar ' ') . dropWhile isSpace
space t = showString t . (\s -> if null s then "" else (' ':s))
space t = showString t . id ----(\s -> if null s then "" else (' ':s))
parenth :: Doc -> Doc
parenth ss = doc (showChar '(') . ss . doc (showChar ')')
@@ -82,13 +82,14 @@ instance Print CId where
prt _ (CId i) = doc (showString i)
prtList es = case es of
[] -> (concatD [])
x:xs -> (concatD [prt 0 x , prt 0 xs])
[x] -> (concatD [prt 0 x])
x:xs -> (concatD [prt 0 x , doc (showString ",") , prt 0 xs])
instance Print Grammar where
prt i e = case e of
Grm header abstract concretes -> prPrec i 0 (concatD [prt 0 header , doc (showString ";") , prt 0 abstract , doc (showString ";") , prt 0 concretes , doc (showString ";")])
Grm header abstract concretes -> prPrec i 0 (concatD [prt 0 header , doc (showString ";") , prt 0 abstract , doc (showString ";") , prt 0 concretes])
instance Print Header where
@@ -98,7 +99,7 @@ instance Print Header where
instance Print Abstract where
prt i e = case e of
Abs absdefs -> prPrec i 0 (concatD [doc (showString "abstract") , doc (showString "{") , prt 0 absdefs , doc (showString "}") , doc (showString ";")])
Abs absdefs -> prPrec i 0 (concatD [doc (showString "abstract") , doc (showString "{") , prt 0 absdefs , doc (showString "}")])
instance Print Concrete where
@@ -152,7 +153,7 @@ instance Print Atom where
instance Print Term where
prt i e = case e of
R terms -> prPrec i 0 (concatD [doc (showString "[") , prt 0 terms , doc (showString "]")])
P term0 term -> prPrec i 0 (concatD [prt 0 term0 , doc (showString "[") , prt 0 term , doc (showString "]")])
P term0 term -> prPrec i 0 (concatD [doc (showString "(") , prt 0 term0 , doc (showString "!") , prt 0 term , doc (showString ")")])
S terms -> prPrec i 0 (concatD [doc (showString "(") , prt 0 terms , doc (showString ")")])
K tokn -> prPrec i 0 (concatD [prt 0 tokn])
V n -> prPrec i 0 (concatD [doc (showString "$") , prt 0 n])
@@ -161,6 +162,7 @@ instance Print Term where
FV terms -> prPrec i 0 (concatD [doc (showString "[|") , prt 0 terms , doc (showString "|]")])
W str term -> prPrec i 0 (concatD [doc (showString "(") , prt 0 str , doc (showString "+") , prt 0 term , doc (showString ")")])
RP term0 term -> prPrec i 0 (concatD [doc (showString "(") , prt 0 term0 , doc (showString "@") , prt 0 term , doc (showString ")")])
TM -> prPrec i 0 (concatD [doc (showString "?")])
prtList es = case es of
[] -> (concatD [])