mirror of
https://github.com/idris-lang/Idris2.git
synced 2024-12-26 21:23:53 +03:00
71a638ef28
This also changes the return type of `char` and `string`. They previously returned `()`, they now return `Char` and `String` repectively. Signed-off-by: Alex Humphreys <alex.humphreys@here.com>
75 lines
1.9 KiB
Idris
75 lines
1.9 KiB
Idris
module Main
|
|
|
|
import Control.Monad.Identity
|
|
import Control.Monad.Trans
|
|
|
|
import Data.Maybe
|
|
import Data.Vect
|
|
import Data.String.Parser
|
|
|
|
%default partial
|
|
-- Build this program with '-p contrib'
|
|
|
|
showRes : Show a => Either String (a, Int) -> IO ()
|
|
showRes res = case res of
|
|
Left err => putStrLn err
|
|
Right (xs, rem) => printLn xs
|
|
|
|
-- test lifting
|
|
parseStuff : ParseT IO ()
|
|
parseStuff = do a <- string "abc"
|
|
lift $ putStrLn "hiya"
|
|
b <- string "def"
|
|
pure ()
|
|
|
|
-- test a parsing from a pure function
|
|
pureParsing : String -> Either String ((List Char), Int)
|
|
pureParsing str = parse (many (satisfy isDigit)) str
|
|
|
|
|
|
-- test option
|
|
optParser : ParseT IO String
|
|
optParser = do res <- option "" (takeWhile isDigit)
|
|
string "def"
|
|
pure $ res
|
|
|
|
-- test optional
|
|
maybeParser : ParseT IO Bool
|
|
maybeParser = do res <- optional (string "abc")
|
|
string "def"
|
|
pure $ isJust res
|
|
|
|
main : IO ()
|
|
main = do
|
|
res <- parseT parseStuff "abcdef"
|
|
res <- parseT (string "hi") "hiyaaaaaa"
|
|
case res of
|
|
Left err => putStrLn "NOOOOOOO!"
|
|
Right (_, i) => printLn i
|
|
bad <- parseT (satisfy isDigit) "a"
|
|
showRes bad
|
|
bad2 <- parseT (string "good" <?> "Not good") "bad bad bad"
|
|
showRes bad2
|
|
digs <- parseT (many (satisfy isDigit)) "766775"
|
|
showRes digs
|
|
showRes $ pureParsing "63553"
|
|
s <- parseT (takeWhile isDigit) "887abc8993"
|
|
showRes s
|
|
res <- parseT optParser "123def"
|
|
showRes res
|
|
res <- parseT optParser "def"
|
|
showRes res
|
|
res <- parseT maybeParser "abcdef"
|
|
showRes res
|
|
res <- parseT maybeParser "def"
|
|
showRes res
|
|
res <- parseT (commaSep alphaNum) "a,1,b,2"
|
|
showRes res
|
|
res <- parseT (ntimes 4 letter) "abcd"
|
|
showRes res
|
|
res <- parseT (requireFailure letter) "1"
|
|
showRes res
|
|
res <- parseT (requireFailure letter) "a" -- Should error
|
|
showRes res
|
|
pure ()
|