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|
structure CaseOf =
struct
open SMLUnit.Test SMLUnit.Assert
fun testCaseOfInt () =
let
val _ = case 1 of
1 => ()
| _ => fail "NG"
val _ = case 1 of
~1 => fail "NG"
| _ => ()
val _ = case ~1 of
~1 => ()
| _ => fail "NG"
val _ = case 3 of
1 => fail "NG"
| 2 => fail "NG"
| 3 => ()
| _ => fail "NG"
val _ = case 0 of
~0 => ()
| _ => fail "NG"
val _ = case 127 : int8 of
127 => ()
| _ => fail "NG"
val _ = case 32767 : int16 of
32767 => ()
| _ => fail "NG"
val _ = case 2147483647 : int32 of
2147483647 => ()
| _ => fail "NG"
val _ = case 9223372036854775807 : int64 of
9223372036854775807 => ()
| _ => fail "NG"
val _ = case 9223372036854775808 : intInf of
9223372036854775808 => ()
| _ => fail "NG"
in
()
end
fun testCaseOfIntFunction () =
let
fun f1 x = case x of
1 => ()
| _ => fail "NG"
val v1 = f1 (1 : int)
fun f2 x = case x of
127 => ()
| _ => fail "NG"
val v2 = f2 (127 : int8)
fun f3 x = case x of
32767 => ()
| _ => fail "NG"
val v3 = f3 (32767 : int16)
fun f4 x = case x of
2147483647 => ()
| _ => fail "NG"
val v4 = f4 (2147483647 : int32)
fun f5 x = case x of
9223372036854775807 => ()
| _ => fail "NG"
val v5 = f5 (9223372036854775807 : int64)
fun f6 x = case x of
9223372036854775808 => ()
| _ => fail "NG"
val v6 = f6 (9223372036854775808 : intInf)
in
()
end
fun testCaseOfWord () =
let
val _ = case 0w1 of
0w1 => ()
| _ => fail "NG"
val _ = case 0w1 of
0w2 => fail "NG"
| _ => ()
val _ = case 0wxFF : word8 of
0w255 => ()
| _ => fail "NG"
val _ = case 0wxFFFF : word16 of
0w65535 => ()
| _ => fail "NG"
val _ = case 0wxFFFFFFFF : word32 of
0w4294967295 => ()
| _ => fail "NG"
val _ = case 0wxFFFFFFFFFFFFFFFF : word64 of
0w18446744073709551615 => ()
| _ => fail "NG"
in
()
end
fun testCaseOfWordFunction() =
let
fun f1 x = case x of
0w1 => ()
| _ => fail "NG"
val v1 = f1 (0w1 : word)
fun f2 x = case x of
0w255 => ()
| _ => fail "NG"
val v2 = f2 (0wxFF : word8)
fun f3 x = case x of
0w65535 => ()
| _ => fail "NG"
val v3 = f3 (0wxFFFF : word16)
fun f4 x = case x of
0w4294967295 => ()
| _ => fail "NG"
val v4 = f4 (0wxFFFFFFFF : word32)
fun f5 x = case x of
0w18446744073709551615 => ()
| _ => fail "NG"
val v5 = f5 (0wxFFFFFFFFFFFFFFFF : word64)
in
()
end
fun testCaseOfReal () =
let
val _ = case 1.0 of
n => ()
val _ = case 1.0 : real32 of
n => ()
in
()
end
fun testCaseOfRealFunction () =
let
fun f1 x = case x + 1.0 of
_ => ()
val v1 = f1 (1.0 : real)
fun f2 x = case x + 1.0 of
_ => ()
val v2 = f2 (1.0 : real32)
in
()
end
fun testCaseOfChar () =
let
val _ = case #"A" of
#"A" => ()
| _ => fail "NG"
val _ = case #"a" of
#"A" => fail "NG"
| _ => ()
val _ = case #"A" of
#"\065" => ()
| _ => fail "NG"
val _ = case #"C" of
#"A" => fail "NG"
| #"B" => fail "NG"
| #"C" => ()
| _ => fail "NG"
in
()
end
fun testCaseOfCharFunction () =
let
fun f1 x = case x of
#"A" => ()
| _ => fail "NG"
val v1 = f1 #"A"
in
()
end
fun testCaseOfString () =
let
val _ = case "" of
"" => ()
| _ => fail "NG"
val _ = case "ABC" of
"ABC" => ()
| _ => fail "NG"
val _ = case "F" of
"ABC" => fail "NG"
| "DE" => fail "NG"
| "F" => ()
| _ => fail "NG"
val _ = case "\255" of
"\u00FF" => ()
| _ => fail "NG"
in
()
end
fun testCaseOfStringFunction() =
let
fun f1 x = case x of
"ABC" => ()
| _ => fail "NG"
val v1 = f1 "ABC"
in
()
end
fun testCaseOfConstructor () =
let
datatype dt1 = DT1
| DT2
fun f1 x = case x of
DT1 => ()
| DT2 => fail "NG"
val v1 = f1 DT1
fun f2 x = case x of
DT1 => ()
| _ => fail "NG"
val v2 = f2 DT1
fun f4 x = case x of
x as DT1 => x
| x : dt1 as DT2 => x
val v4 = f4 DT1
val v5 = f4 DT2
val _ = assertTrue (v4 = DT1)
val _ = assertTrue (v5 = DT2)
in
()
end
fun testCaseOfRecord () =
let
val _ = case {} of
{} => ()
val _ = case {} of
{...} => ()
val _ = case {A=1} of
{A=1} => ()
| {A=n} => fail "NG"
val _ = case {A=1, B="A"} of
{A=1, B="B"} => fail "NG"
| {A=2, B="A"} => fail "NG"
| {A=1, B="A"} => ()
| _ => fail "NG"
val _ = case {A=1, B="A"} of
{A : int as 2, B="A"} => fail "NG"
| {A : int as x, B="A"} => (assertEqualInt 1 A;
assertEqualInt 1 x)
| _ => fail "NG"
val _ = case {A=1, B="A"} of
v as {A : int as 2, ...} => fail "NG"
| v as {A : int as 1, ...} => (assertTrue ({A=1, B="A"} = v);
assertEqualInt 1 A)
| _ => fail "NG"
in
()
end
fun testCaseOfRecordFunction () =
let
fun f1 x = case x of
{...} => x
val v1 = f1 {}
val v2 = f1 {A=1}
val v3 = f1 {A=1, B="A"}
val v4 = f1 {A=fn x => x}
fun f2 x = case {A=1} of
{A as x} => x
val v5 = f2 ()
val _ = assertEqualInt 1 v5
fun f3 x = case x of
{...}:{A:'a} => x
val v6 = f3 {A=1}
val v7 = f3 {A="A"}
val _ = assertTrue ({A=1} = v6)
val _ = assertTrue ({A="A"} = v7)
fun f4 x = case x of
{A=x, ...} => x
val v8 = f4 {A=1, B="A"}
val v9 = f4 {A="A", C=1}
val _ = assertEqualInt 1 v8
val _ = assertEqualString "A" v9
in
()
end
fun testCaseOfTuple () =
let
val _ = case () of
() => ()
val _ = case (1, "A") of
(1, "A") => ()
| _ => fail "NG"
val _ = case (1, "A") of
{1 = 1, 2 = "A"} => ()
| _ => fail "NG"
val _ = case (1, "A") of
{1 = 1, ...} => ()
| _ => fail "NG"
val _ = case (1, "A") of
(x as 1, y as "B") => fail "NG"
| (x as 2, y as "A") => fail "NG"
| (x as 1, y as "A") => (assertEqualInt 1 x;
assertEqualString "A" y)
| _ => fail "NG"
val _ = case (1, 2, 3) of
(1, 1, _) => fail "NG"
| (_, 2, 2) => fail "NG"
| (3, _, 3) => fail "NG"
| (1, 2, 3) => ()
| _ => fail "NG"
in
()
end
fun testCaseOfTupleFunction () =
let
fun f1 x = case x of
(n, m) => ()
val v1 = f1 (1, 2)
val v2 = f1 ("A", "B")
val v3 = f1 (1, "A")
fun f2 x = case x of
(n, m) : 'a * 'a => ()
val v4 = f2 (1, 2)
val v5 = f2 ("A", "B")
fun f3 x = case x of
(1, m) => ()
| _ => fail "NG"
val v6 = f3 (1, 2)
val v7 = f3 (1, "A")
in
()
end
fun testCaseOfList () =
let
val _ = case [] of
[] => ()
| _ => fail "NG"
val _ = case [1] of
[1] => ()
| _ => fail "NG"
val _ = case [1,2,3] of
[1] => fail "NG"
| [1,2] => fail "NG"
| [1,2,3] => ()
| _ => fail "NG"
val _ = case [1,2,3] of
[1] => fail "NG"
| [1,2] => fail "NG"
| (1::2::[3]) => ()
| _ => fail "NG"
in
()
end
fun testCaseOfListFunction () =
let
fun f1 x = case [x] of
[x] => x
| _ => fail "NG"
val v1 = f1 1
val v2 = f1 "A"
val _ = assertEqualInt 1 v1
val _ = assertEqualString "A" v2
fun f2 x = case x of
[x:'a] => x
| _ => fail "NG"
val v3 = f2 [1]
val v4 = f2 ["A"]
val _ = assertEqualInt 1 v3
val _ = assertEqualString "A" v4
in
()
end
fun testCaseOfInfix () =
let
datatype dt1 = OP1 of dt1 * dt1
| V1
| V2
| V3
val v1 = OP1 (V1, V2)
infix OP1
val _ = case v1 of
V1 OP1 V2 => ()
| _ => fail "NG"
val v2 = V1 OP1 V2 OP1 V3
val (v3, v4) = case v2 of
x OP1 y => (x, y)
| _ => fail "NG"
val _ = assertTrue (op OP1 (V1, V2) = v3)
val _ = assertTrue (V3 = v4)
in
()
end
fun testCaseOfInfixr () =
let
datatype dt1 = OP1 of dt1 * dt1
| V1
| V2
| V3
val v1 = OP1 (V1, V2)
infixr OP1
val _ = case v1 of
V1 OP1 V2 => ()
| _ => fail "NG"
val v2 = V1 OP1 V2 OP1 V3
val (v3, v4) = case v2 of
x OP1 y => (x, y)
| _ => fail "NG"
val _ = assertTrue (V1 = v3)
val _ = assertTrue (op OP1 (V2, V3) = v4)
in
()
end
fun testCaseOfInfixLevel () =
let
datatype dt1 = OP1 of int * dt1
| OP2 of dt1 * string
| V1
val v1 = OP2 (OP1 (1, V1), "A")
infix 3 OP1
infix 2 OP2
val _ = case v1 of
1 OP1 (V1 OP2 "A") => fail "NG"
| 1 OP1 V1 OP2 "A" => ()
| _ => fail "NG"
infix 4 OP2
val _ = case v1 of
1 OP1 V1 OP2 "A" => fail "NG"
| (1 OP1 V1) OP2 "A" => ()
| _ => fail "NG"
in
()
end
fun testCaseOfLayeredPattern () =
let
val _ = case 1 of
x as 2 => fail "NG"
| x as 1 => ()
| _ => fail "NG"
fun f1 x = case x of
x : {A:int, B:string} as {A=2, ...} => fail "NG"
| x as {A=1, ...} => x
| _ => fail "NG"
val v1 = f1 {A=1, B="A"}
val _ = assertTrue ({A=1, B="A"} = v1)
in
()
end
fun testCaseOfPolymorphicFunction() =
let
fun f1 x = case x of
v => v
val v1 = f1 1
val v2 = f1 "ABC"
val v3 = f1 (1, 2)
val v4 = f1 {A = 1, B = "A"}
val v5 = f1 [1, 2]
val _ = assertEqualInt 1 v1
val _ = assertEqualString "ABC" v2
val _ = assertTrue ((1, 2) = v3)
val _ = assertTrue ({A = 1, B = "A"} = v4)
val _ = assertTrue ([1, 2] = v5)
fun f2 x = case x of
v : 'a => v
val v6 = f2 1
val v7 = f2 "ABC"
val _ = assertEqualInt 1 v6
val _ = assertEqualString "ABC" v7
fun f3 x = case x of
v : 'a as y => v
val v8 = f3 1
val v9 = f3 "ABC"
val _ = assertEqualInt 1 v8
val _ = assertEqualString "ABC" v9
in
()
end
val tests = TestList [
Test ("testCaseOfInt", testCaseOfInt),
Test ("testCaseOfIntFunction", testCaseOfIntFunction),
Test ("testCaseOfWord", testCaseOfWord),
Test ("testCaseOfWordFunction", testCaseOfWordFunction),
Test ("testCaseOfReal", testCaseOfReal),
Test ("testCaseOfRealFunction", testCaseOfRealFunction),
Test ("testCaseOfChar", testCaseOfChar),
Test ("testCaseOfCharFunction", testCaseOfCharFunction),
Test ("testCaseOfString", testCaseOfString),
Test ("testCaseOfStringFunction", testCaseOfStringFunction),
Test ("testCaseOfConstructor", testCaseOfConstructor),
Test ("testCaseOfRecord", testCaseOfRecord),
Test ("testCaseOfRecordFunction", testCaseOfRecordFunction),
Test ("testCaseOfTuple", testCaseOfTuple),
Test ("testCaseOfTupleFunction", testCaseOfTupleFunction),
Test ("testCaseOfList", testCaseOfList),
Test ("testCaseOfListFunction", testCaseOfListFunction),
Test ("testCaseOfInfix", testCaseOfInfix),
Test ("testCaseOfInfixr", testCaseOfInfixr),
Test ("testCaseOfInfixLevel", testCaseOfInfixLevel),
Test ("testCaseOfLayeredPattern", testCaseOfLayeredPattern),
Test ("testCaseOfPolymorphicFunction", testCaseOfPolymorphicFunction)
]
end
|
