1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
|
module Language where
import qualified Ast as A
import Compiler
import Control.Monad.State (evalState)
import qualified Error as E
import Lexer (scan)
import Parser (parse)
import Test.HUnit
import Text.Parsec (runParser)
import Text.Parsec.Pos (newPos)
assertAst :: String -> [A.Expr] -> Assertion
assertAst input expected = do
r <- return $ runParser (scan parse) () "test" input
case r of
Left e -> assertFailure $ show e
Right ast -> assertEqual "" expected ast
expectError :: String -> IO (Maybe E.Error)
expectError input = do
r <- return $ runParser (scan parse) () "test" input
case r of
Left e -> assertFailure $ show e
Right ast -> do
res <- return $ evalState (compileAll ast) startState
case res of
Left (e : _) -> return $ Just e
Right _ -> return $ Nothing
testCase1 =
TestLabel "parse module" $
TestCase $
assertAst "module main" [A.Module "main" $ newPos "test" 1 1]
testCase2 =
TestLabel
"parse a function"
$ TestCase $
assertAst
"module main\n\
\def fn() { }"
[ A.Module "main" $ newPos "test" 1 1,
A.Func "fn" [] Nothing [] False False $ newPos "test" 2 1
]
testCase3 =
TestLabel
"parse a function with parameters"
$ TestCase $
assertAst
"module main\n\
\def fn(a: u8) { }"
[ A.Module "main" $ newPos "test" 1 1,
A.Func "fn" [("a", A.Type "u8", newPos "test" 2 8)] Nothing [] False False $ newPos "test" 2 1
]
testCase4 =
TestLabel
"parse a function with return value"
$ TestCase $
assertAst
"module main\n\
\def fn(): u8 {\n\
\return 1; }"
[ A.Module "main" $ newPos "test" 1 1,
A.Func "fn" [] (Just $ A.Type "u8") [A.Return (Just $ A.Num 1 $ newPos "test" 3 8) $ newPos "test" 3 1] False False $ newPos "test" 2 1
]
testCase5 =
TestLabel
"parse a function call"
$ TestCase $
assertAst
"module main\n\
\def fn() { }\n\
\fn();"
[ A.Module "main" $ newPos "test" 1 1,
A.Func "fn" [] Nothing [] False False $ newPos "test" 2 1,
A.Call (A.Var "fn" $ newPos "test" 3 1) [] $ newPos "test" 3 1
]
testCase6 =
TestLabel
"parse a function call with arguments"
$ TestCase $
assertAst
"module main\n\
\def fn(a: u8) { }\n\
\fn(10);"
[ A.Module "main" $ newPos "test" 1 1,
A.Func "fn" [("a", A.Type "u8", newPos "test" 2 8)] Nothing [] False False $ newPos "test" 2 1,
A.Call (A.Var "fn" $ newPos "test" 3 1) [A.Num 10 $ newPos "test" 3 4] $ newPos "test" 3 1
]
testCase7 =
TestLabel
"parse empty return on a function"
$ TestCase $
assertAst
"module main\n\
\def fn() {\n\
\return; }"
[ A.Module "main" $ newPos "test" 1 1,
A.Func "fn" [] Nothing [A.Return Nothing $ newPos "test" 3 1] False False $ newPos "test" 2 1
]
testCase8 =
TestLabel
"parse a recursive function"
$ TestCase $
assertAst
"module main\n\
\def fn() {\n\
\fn(); }"
[ A.Module "main" $ newPos "test" 1 1,
A.Func "fn" [] Nothing [A.Call (A.Var "fn" $ newPos "test" 3 1) [] $ newPos "test" 3 1] False False $ newPos "test" 2 1
]
testCase9 =
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 "test" 1 1,
A.Func "fn1" [] Nothing [] False False $ newPos "test" 2 1,
A.Func
"fn2"
[("f", A.FuncType [] Nothing, newPos "test" 3 9)]
Nothing
[ A.Call (A.Var "f" $ newPos "test" 4 1) [] $ newPos "test" 4 1
]
False
False
$ newPos "test" 3 1,
A.Call (A.Var "fn2" $ newPos "test" 5 1) [A.Var "fn1" $ newPos "test" 5 5] $ newPos "test" 5 1
]
testCase10 =
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 "test" 1 1,
A.Func
"fn"
[("f", A.FuncType [] Nothing, newPos "test" 2 8)]
Nothing
[A.Call (A.Var "f" $ newPos "test" 3 1) [] $ newPos "test" 3 1]
False
False
$ newPos "test" 2 1,
A.Call (A.Var "fn" $ newPos "test" 4 1) [A.Func "lambda@4,4" [] Nothing [] True True $ newPos "test" 4 4] $ newPos "test" 4 1
]
testCase11 =
TestLabel "parse a call to lambda" $
TestCase $
assertAst
"module main\n\
\() { }();"
[ A.Module "main" $ newPos "test" 1 1,
A.Call (A.Func "lambda@2,1" [] Nothing [] True True $ newPos "test" 2 1) [] $ newPos "test" 2 1
]
testCase12 =
TestLabel "invalid return value" $
TestCase $ do
e <-
expectError
"module main\n\
\def fn(): u8 { return; }"
case e of
Nothing -> assertFailure "expected error, didn't happen"
Just (E.TypeError _ _) -> return $ ()
testCase13 =
TestLabel "return without function" $
TestCase $ do
e <-
expectError
"module main\n\
\return;"
case e of
Nothing -> assertFailure "expected error, didn't happen"
Just (E.UnexpectedReturn _ _) -> return $ ()
language =
[ testCase1,
testCase2,
testCase3,
testCase4,
testCase5,
testCase6,
testCase7,
testCase8,
testCase9,
testCase10,
testCase11,
testCase12,
testCase13
]
|
