{- Copyright (C) 2012 Christopher Walker <http://gsd.uwaterloo.ca> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. -} module Language.Clafer.Comments(getOptions, getFragments, getStats, getGraph, getComments) where import Data.Maybe (fromMaybe) import Data.List (stripPrefix) import Language.Clafer.Front.AbsClafer type InputModel = String getOptions :: InputModel -> String getOptions model = case lines model of [] -> "" (s:_) -> fromMaybe "" $ stripPrefix "//# OPTIONS " s getFragments :: InputModel -> [Int] getFragments [] = [] getFragments xs = getFragments' (lines xs) 1 getFragments' :: [ InputModel ] -> Int -> [Int] getFragments' [] _ = [] getFragments' ("//# FRAGMENT":xs) ln = ln:getFragments' xs (ln + 1) getFragments' (_:xs) ln = getFragments' xs $ ln + 1 getStats :: InputModel -> [Int] getStats [] = [] getStats xs = getStats' (lines xs) 1 getStats' :: [String] -> Int -> [Int] getStats' [] _ = [] getStats' ("//# SUMMARY":xs) ln = ln:getStats' xs (ln + 1) getStats' ("//# STATS":xs) ln = ln:getStats' xs (ln + 1) getStats' (_:xs) ln = getStats' xs $ ln + 1 getGraph :: InputModel -> [Int] getGraph [] = [] getGraph xs = getGraph' (lines xs) 1 getGraph' :: [String] -> Int -> [Int] getGraph' [] _ = [] getGraph' ("//# SUMMARY":xs) ln = ln:getGraph' xs (ln + 1) getGraph' ("//# GRAPH":xs) ln = ln:getGraph' xs (ln + 1) getGraph' (_:xs) ln = getGraph' xs $ ln + 1 getComments :: InputModel -> [(Span, String)] getComments input = getComments' input 1 1 getComments' :: String -> Integer -> Integer -> [(Span, String)] getComments' [] _ _ = [] getComments' ('/':'/':xs) row col = readLine ('/':'/':xs) (Pos row col) getComments' ('/':'*':xs) row col = readBlock ('/':'*':xs) (Pos row col) getComments' ('\n':xs) row _ = getComments' xs (row + 1) 1 getComments' (_:xs) row col = getComments' xs row $ col + 1 readLine :: String -> Pos -> [(Span, String)] readLine [] _ = [] readLine xs start@(Pos row col) = let comment = takeWhile (/= '\n') xs in ((Span start (Pos row (col + toInteger (length comment)))), comment): getComments' (drop (length comment + 1) xs) (row + 1) 1 readBlock :: String -> Pos -> [(Span, String)] readBlock xs start@(Pos row col) = let (end@(Pos row' col'), comment, rest) = readBlock' xs row col id in ((Span start end), comment):getComments' rest row' col' readBlock' :: String -> Integer -> Integer -> (String -> String) -> (Pos, String,String) readBlock' ('*':'/':xs) row col comment = ((Pos row $ col + 2), comment "*/", xs) readBlock' ('\n':xs) row _ comment = readBlock' xs (row + 1) 1 (comment "\n" ++) readBlock' (x:xs) row col comment = readBlock' xs row (col + 1) (comment [x]++) readBlock' [] row col comment = ((Pos row col), comment [], [])