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|
module Language where
import Control.Monad.State (evalState)
import Data.Foldable (find)
import qualified Micro.Ast as A
import Micro.Compiler
import qualified Micro.Error as E
import Micro.Parser (parseFromString)
import Test.HUnit
import Text.Parsec.Pos (newPos)
assertCompileAst :: String -> [A.Expr] -> Assertion
assertCompileAst input expected = do
r <- return $ parseFromString input
case r of
Left e -> assertFailure $ show e
Right ast -> do
res <- return $ compileToAst ast
case res of
Left e -> assertFailure $ show e
Right ast -> assertEqual "" expected ast
assertAst :: String -> [A.Expr] -> Assertion
assertAst input expected = do
r <- return $ parseFromString input
case r of
Left e -> assertFailure $ show e
Right ast -> assertEqual "" expected ast
expectError :: String -> E.ErrorType -> Assertion
expectError input etyp = do
r <- return $ parseFromString input
case r of
Left e -> assertFailure $ show e
Right ast -> do
res <- return $ compile ast
case res of
Left e -> case (find (\(E.Error t _ _) -> t == etyp) e) of
Just _ -> return ()
Nothing -> assertFailure $ "expected " ++ show etyp ++ " didn't happen, got instead:\n" ++ unlines (map (\(E.Error t _ _) -> show t) e)
Right _ -> assertFailure "expected error, didn't happen"
testCases =
[ TestLabel "parse module" $
TestCase $
assertAst "module main" [A.Module "main" $ newPos "-" 1 1],
TestLabel "parse binary number" $
TestCase $
assertAst
"module main\n0b100000;"
[ A.Module "main" $ newPos "-" 1 1,
A.Num 32 $ newPos "-" 2 1
],
TestLabel
"parse a function"
$ TestCase $
assertAst
"module main\n\
\def fn() { }"
[ A.Module "main" $ newPos "-" 1 1,
A.Func "fn" [] Nothing [] False False $ newPos "-" 2 1
],
TestLabel
"parse a function with parameters"
$ TestCase $
assertAst
"module main\n\
\def fn(a: u8) { }"
[ A.Module "main" $ newPos "-" 1 1,
A.Func "fn" [("a", A.Type "u8", True, newPos "-" 2 8)] Nothing [] False False $ newPos "-" 2 1
],
TestLabel
"parse a function with return value"
$ TestCase $
assertAst
"module main\n\
\def fn(): u8 {\n\
\return 1; }"
[ A.Module "main" $ newPos "-" 1 1,
A.Func "fn" [] (Just $ A.Type "u8") [A.Return (Just $ A.Num 1 $ newPos "-" 3 8) $ newPos "-" 3 1] False False $ newPos "-" 2 1
],
TestLabel
"parse a function call"
$ TestCase $
assertAst
"module main\n\
\def fn() { }\n\
\fn();"
[ A.Module "main" $ newPos "-" 1 1,
A.Func "fn" [] Nothing [] False False $ newPos "-" 2 1,
A.Call (A.Variable "fn" $ newPos "-" 3 1) [] $ newPos "-" 3 1
],
TestLabel
"parse a function call with arguments"
$ TestCase $
assertAst
"module main\n\
\def fn(a: u8) { }\n\
\fn(10);"
[ A.Module "main" $ newPos "-" 1 1,
A.Func "fn" [("a", A.Type "u8", True, newPos "-" 2 8)] Nothing [] False False $ newPos "-" 2 1,
A.Call (A.Variable "fn" $ newPos "-" 3 1) [A.Num 10 $ newPos "-" 3 4] $ newPos "-" 3 1
],
TestLabel
"parse empty return on a function"
$ TestCase $
assertAst
"module main\n\
\def fn() {\n\
\return; }"
[ A.Module "main" $ newPos "-" 1 1,
A.Func "fn" [] Nothing [A.Return Nothing $ newPos "-" 3 1] False False $ newPos "-" 2 1
],
TestLabel
"parse a recursive function"
$ TestCase $
assertAst
"module main\n\
\def fn() {\n\
\fn(); }"
[ A.Module "main" $ newPos "-" 1 1,
A.Func "fn" [] Nothing [A.Call (A.Variable "fn" $ newPos "-" 3 1) [] $ newPos "-" 3 1] False False $ newPos "-" 2 1
],
TestLabel
"parse a function with a function parameter"
$ TestCase $
assertAst
"module main\n\
\def fn1() { }\n\
\def fn2(f: ()) {\n\
\f(); }\n\
\fn2(fn1);"
[ A.Module "main" $ newPos "-" 1 1,
A.Func "fn1" [] Nothing [] False False $ newPos "-" 2 1,
A.Func
"fn2"
[("f", A.FuncType [] Nothing, True, newPos "-" 3 9)]
Nothing
[ A.Call (A.Variable "f" $ newPos "-" 4 1) [] $ newPos "-" 4 1
]
False
False
$ newPos "-" 3 1,
A.Call (A.Variable "fn2" $ newPos "-" 5 1) [A.Variable "fn1" $ newPos "-" 5 5] $ newPos "-" 5 1
],
TestLabel
"parse a function with a function parameter (lambda)"
$ TestCase $
assertAst
"module main\n\
\def fn(f: ()) {\n\
\f(); }\n\
\fn(() { });"
[ A.Module "main" $ newPos "-" 1 1,
A.Func
"fn"
[("f", A.FuncType [] Nothing, True, newPos "-" 2 8)]
Nothing
[A.Call (A.Variable "f" $ newPos "-" 3 1) [] $ newPos "-" 3 1]
False
False
$ newPos "-" 2 1,
A.Call (A.Variable "fn" $ newPos "-" 4 1) [A.Func "lambda@4,4" [] Nothing [] True True $ newPos "-" 4 4] $ newPos "-" 4 1
],
TestLabel "parse a call to lambda" $
TestCase $
assertAst
"module main\n\
\() { }();"
[ A.Module "main" $ newPos "-" 1 1,
A.Call (A.Func "lambda@2,1" [] Nothing [] True True $ newPos "-" 2 1) [] $ newPos "-" 2 1
],
TestLabel "parse a variable declaration" $
TestCase $
assertAst
"module main\n\
\var a: u8 = 10;"
[ A.Module "main" $ newPos "-" 1 1,
A.Var "a" (A.Type "u8") (A.Num 10 $ newPos "-" 2 13) False False $ newPos "-" 2 5
],
TestLabel "parse a private variable declaration" $
TestCase $
assertAst
"module main\n\
\private var a: u8 = 10;"
[ A.Module "main" $ newPos "-" 1 1,
A.Var "a" (A.Type "u8") (A.Num 10 $ newPos "-" 2 21) False True $ newPos "-" 2 13
],
TestLabel "parse a group variable declaration" $
TestCase $
assertAst
"module main\n\
\var (a: u8 = 10,\n\
\b: bool = true);"
[ A.Module "main" $ newPos "-" 1 1,
A.Var "a" (A.Type "u8") (A.Num 10 $ newPos "-" 2 14) False False $ newPos "-" 2 6,
A.Var "b" (A.Type "bool") (A.Bool' True $ newPos "-" 3 11) False False $ newPos "-" 3 1
],
TestLabel "parse a group of private variable declaration" $
TestCase $
assertAst
"module main\n\
\private var (a: u8 = 10,\n\
\b: bool = true);"
[ A.Module "main" $ newPos "-" 1 1,
A.Var "a" (A.Type "u8") (A.Num 10 $ newPos "-" 2 22) True False $ newPos "-" 2 14,
A.Var "b" (A.Type "bool") (A.Bool' True $ newPos "-" 3 11) True False $ newPos "-" 3 1
],
TestLabel "parse assignation" $
TestCase $
assertAst
"module main\n\
\var a: u8 = 0;\n\
\a = 10;"
[ A.Module "main" $ newPos "-" 1 1,
A.Var "a" (A.Type "u8") (A.Num 0 $ newPos "-" 2 13) False False $ newPos "-" 2 5,
A.BinOp A.Assign (newPos "-" 3 5) (A.Variable "a" $ newPos "-" 3 1) (A.Num 10 $ newPos "-" 3 5)
],
TestLabel "fold constant addition" $
TestCase $
assertCompileAst
"module main\n\
\1 + 2 + 3 + (5 + 5);"
[ A.Module "main" $ newPos "-" 1 1,
A.Num 16 $ newPos "-" 2 13
],
TestLabel "fold constant addition in return" $
TestCase $
assertCompileAst
"module main\n\
\def fn(): u8 { return 1 + 2; }"
[ A.Module "main" $ newPos "-" 1 1,
A.Func "fn" [] (Just $ A.Type "u8") [A.Return (Just $ A.Num 3 $ newPos "-" 2 27) $ newPos "-" 2 16] False False $ newPos "-" 2 1
]
]
testErrors =
[ TestLabel "invalid return value (empty return)" $
TestCase $
expectError
"module main\n\
\def fn(): u8 { return; }"
E.TypeError,
TestLabel "invalid return value" $
TestCase $
expectError
"module main\n\
\def fn(): u16 { return 1; }"
E.TypeError,
TestLabel "return without function" $
TestCase $
expectError
"module main\n\
\return;"
E.UnexpectedReturn,
TestLabel "symbol already defined" $
TestCase $
expectError
"module main\n\
\def fn() { }\n\
\def fn() { }"
E.AlreadyDefined,
TestLabel "parameter already defined" $
TestCase $
expectError
"module main\n\
\def fn(a: u8, a: u8) { }\n"
E.AlreadyDefined,
TestLabel "call on non callable" $
TestCase $
expectError
"module main\n\
\def fn(a: u8): u8 { return a(); }\n"
E.NonCallable,
TestLabel "undefined variable" $
TestCase $
expectError
"module main\n\
\def fn(a: u8): u8 { return undef; }\n"
E.Undefined,
TestLabel "lambdas can use local variables only" $
TestCase $
expectError
"module main\n\
\def fn(a: u8): () -> u8 {\n\
\return (): u8 { return a; };\n\
\}\n"
E.Undefined,
TestLabel "undefined type in function parameters" $
TestCase $
expectError
"module main\n\
\def fn(a: undef): bool {\n\
\return true;\n\
\}\n"
E.UndefinedType,
TestLabel "undefined type in function return type" $
TestCase $
expectError
"module main\n\
\def fn(): undef {\n\
\return true;\n\
\}\n"
E.UndefinedType,
TestLabel "already defined variable" $
TestCase $
expectError
"module main\n\
\var a: u8 = 1; var a: u8 = 1;\n"
E.AlreadyDefined,
TestLabel "undefined type in variable declaration" $
TestCase $
expectError
"module main\n\
\var a: undef = 1;\n"
E.UndefinedType,
TestLabel "type mismatch in variable declaration" $
TestCase $
expectError
"module main\n\
\var a: bool = 0;\n"
E.TypeError,
TestLabel "type mismatch in variable declaration (lambda)" $
TestCase $
expectError
"module main\n\
\var a: bool = (a:u8): u8 { return a; };\n"
E.TypeError,
TestLabel "invalid assignation target" $
TestCase $
expectError
"module main\n\
\def fn() { return; }\n\
\fn() = 10;"
E.InvalidTarget,
TestLabel "type mismatch in assignation" $
TestCase $
expectError
"module main\n\
\var a: u8 = 0;\n\
\a = false;"
E.TypeError,
TestLabel "type mismatch in binary operator" $
TestCase $
expectError
"module main\n\
\1 + false;\n"
E.TypeError,
TestLabel "div by 0" $
TestCase $
expectError
"module main\n\
\1 / 0;\n"
E.InvalidOperation
]
language = testCases ++ testErrors
|
