module Futhark.CodeGen.Backends.GenericPython.Options
( Option (..),
OptionArgument (..),
generateOptionParser,
)
where
import Data.Text qualified as T
import Futhark.CodeGen.Backends.GenericPython.AST
data Option = Option
{ Option -> Text
optionLongName :: T.Text,
Option -> Maybe Char
optionShortName :: Maybe Char,
Option -> OptionArgument
optionArgument :: OptionArgument,
Option -> [PyStmt]
optionAction :: [PyStmt]
}
data OptionArgument
= NoArgument
| RequiredArgument String
| OptionalArgument
generateOptionParser :: [Option] -> [PyStmt]
generateOptionParser :: [Option] -> [PyStmt]
generateOptionParser [Option]
options =
[ PyExp -> PyExp -> PyStmt
Assign
(String -> PyExp
Var String
"parser")
( PyExp -> [PyArg] -> PyExp
Call
(String -> PyExp
Var String
"argparse.ArgumentParser")
[ String -> PyExp -> PyArg
ArgKeyword String
"description" forall a b. (a -> b) -> a -> b
$
Text -> PyExp
String Text
"A compiled Futhark program."
]
)
]
forall a. [a] -> [a] -> [a]
++ forall a b. (a -> b) -> [a] -> [b]
map Option -> PyStmt
parseOption [Option]
options
forall a. [a] -> [a] -> [a]
++ [ PyExp -> PyExp -> PyStmt
Assign (String -> PyExp
Var String
"parser_result") forall a b. (a -> b) -> a -> b
$
PyExp -> [PyArg] -> PyExp
Call (String -> PyExp
Var String
"vars") [PyExp -> PyArg
Arg forall a b. (a -> b) -> a -> b
$ PyExp -> [PyArg] -> PyExp
Call (String -> PyExp
Var String
"parser.parse_args") [PyExp -> PyArg
Arg forall a b. (a -> b) -> a -> b
$ String -> PyExp
Var String
"sys.argv[1:]"]]
]
forall a. [a] -> [a] -> [a]
++ forall a b. (a -> b) -> [a] -> [b]
map Option -> PyStmt
executeOption [Option]
options
where
parseOption :: Option -> PyStmt
parseOption Option
option =
PyExp -> PyStmt
Exp forall a b. (a -> b) -> a -> b
$
PyExp -> [PyArg] -> PyExp
Call (String -> PyExp
Var String
"parser.add_argument") forall a b. (a -> b) -> a -> b
$
forall a b. (a -> b) -> [a] -> [b]
map (PyExp -> PyArg
Arg forall b c a. (b -> c) -> (a -> b) -> a -> c
. Text -> PyExp
String) [Text]
name_args forall a. [a] -> [a] -> [a]
++ [PyArg]
argument_args
where
name_args :: [Text]
name_args =
forall b a. b -> (a -> b) -> Maybe a -> b
maybe
forall a. a -> a
id
(\Char
x [Text]
l -> (Text
"-" forall a. Semigroup a => a -> a -> a
<> Char -> Text
T.singleton Char
x) forall a. a -> [a] -> [a]
: [Text]
l)
(Option -> Maybe Char
optionShortName Option
option)
[Text
"--" forall a. Semigroup a => a -> a -> a
<> Option -> Text
optionLongName Option
option]
argument_args :: [PyArg]
argument_args = case Option -> OptionArgument
optionArgument Option
option of
RequiredArgument String
t ->
[ String -> PyExp -> PyArg
ArgKeyword String
"action" (Text -> PyExp
String Text
"append"),
String -> PyExp -> PyArg
ArgKeyword String
"default" forall a b. (a -> b) -> a -> b
$ [PyExp] -> PyExp
List [],
String -> PyExp -> PyArg
ArgKeyword String
"type" forall a b. (a -> b) -> a -> b
$ String -> PyExp
Var String
t
]
OptionArgument
NoArgument ->
[ String -> PyExp -> PyArg
ArgKeyword String
"action" (Text -> PyExp
String Text
"append_const"),
String -> PyExp -> PyArg
ArgKeyword String
"default" forall a b. (a -> b) -> a -> b
$ [PyExp] -> PyExp
List [],
String -> PyExp -> PyArg
ArgKeyword String
"const" PyExp
None
]
OptionArgument
OptionalArgument ->
[ String -> PyExp -> PyArg
ArgKeyword String
"action" (Text -> PyExp
String Text
"append"),
String -> PyExp -> PyArg
ArgKeyword String
"default" forall a b. (a -> b) -> a -> b
$ [PyExp] -> PyExp
List [],
String -> PyExp -> PyArg
ArgKeyword String
"nargs" forall a b. (a -> b) -> a -> b
$ Text -> PyExp
String Text
"?"
]
executeOption :: Option -> PyStmt
executeOption Option
option =
String -> PyExp -> [PyStmt] -> PyStmt
For
String
"optarg"
( PyExp -> PyIdx -> PyExp
Index (String -> PyExp
Var String
"parser_result") forall a b. (a -> b) -> a -> b
$ PyExp -> PyIdx
IdxExp forall a b. (a -> b) -> a -> b
$ Text -> PyExp
String forall a b. (a -> b) -> a -> b
$ Option -> Text
fieldName Option
option
)
forall a b. (a -> b) -> a -> b
$ Option -> [PyStmt]
optionAction Option
option
fieldName :: Option -> Text
fieldName = (Char -> Char) -> Text -> Text
T.map Char -> Char
escape forall b c a. (b -> c) -> (a -> b) -> a -> c
. Option -> Text
optionLongName
where
escape :: Char -> Char
escape Char
'-' = Char
'_'
escape Char
c = Char
c