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
212
213
214
215
|
{-# OPTIONS_GHC -Wno-missing-export-lists #-}
module Builtins where
import qualified Data.Map as M
import qualified Data.Text as T
import Control.Monad.Except
import Utils
builtinEnv :: Env
builtinEnv = M.fromList [
-- arithmetic
builtinAdd2,
builtinSubtract2,
builtinMultiply2,
builtinDivide2,
-- comparisons
builtinEq2,
builtinLt2,
-- conversions
builtinFmt,
builtinFloor,
builtinToDouble,
-- vector operations
builtinHead,
builtinTail,
builtinPrepend,
-- string operations
builtinSubstr,
-- vector & string operations
builtinConcat,
-- special
builtinPrint,
("unit", makeNonsenseAST ASTUnit),
("_", makeNonsenseAST ASTHole),
("otherwise", makeNonsenseAST ASTHole),
builtinFatal
]
argError1 :: String -> AST -> String
argError1 fn arg = pos arg ++ ": invalid argument to " ++ fn ++ ": " ++ show arg
argError2 :: (Show a1, Show a2) => String -> a1 -> a2 -> String
argError2 fn arg1 arg2 = "invalid arguments to " ++ fn ++ ": " ++ show arg1 ++ ", " ++ show arg2
argError3 :: (Show a1, Show a2, Show a3) => String -> a1 -> a2 -> a3 -> String
argError3 fn arg1 arg2 arg3 = "invalid arguments to " ++ fn ++ ": " ++ show arg1 ++ ", " ++ show arg2 ++ ", " ++ show arg3
-- BUILTINS
builtinAdd2 :: (String, AST)
builtinAdd2 = (name, makeNonsenseAST $ ASTFunction fn1) where
name = "+"
fn1 _ ast1@AST { astNode = ASTInteger a } =
return $ makeNonsenseAST $ ASTFunction $ fn2 where
fn2 _ AST { astNode = ASTInteger b } =
return $ makeNonsenseAST $ ASTInteger $ a + b
fn2 _ ast2 = throwL $ argError2 name ast1 ast2
fn1 _ ast1@AST { astNode = ASTDouble a } =
return $ makeNonsenseAST $ ASTFunction $ fn2 where
fn2 _ AST { astNode = ASTDouble b } =
return $ makeNonsenseAST $ ASTDouble $ a + b
fn2 _ ast2 = throwL $ argError2 name ast1 ast2
fn1 _ ast1 = throwL $ argError1 name ast1
builtinSubtract2 :: (String, AST)
builtinSubtract2 = (name, makeNonsenseAST $ ASTFunction fn1) where
name = "-"
fn1 _ ast1@AST { astNode = ASTInteger a } =
return $ makeNonsenseAST $ ASTFunction $ fn2 where
fn2 _ AST { astNode = ASTInteger b } =
return $ makeNonsenseAST $ ASTInteger $ a - b
fn2 _ ast2 = throwL $ argError2 name ast1 ast2
fn1 _ ast1@AST { astNode = ASTDouble a } =
return $ makeNonsenseAST $ ASTFunction $ fn2 where
fn2 _ AST { astNode = ASTDouble b } =
return $ makeNonsenseAST $ ASTDouble $ a - b
fn2 _ ast2 = throwL $ argError2 name ast1 ast2
fn1 _ ast1 = throwL $ argError1 name ast1
builtinMultiply2 :: (String, AST)
builtinMultiply2 = (name, makeNonsenseAST $ ASTFunction fn1) where
name = "*"
fn1 _ ast1@AST { astNode = ASTInteger a } =
return $ makeNonsenseAST $ ASTFunction $ fn2 where
fn2 _ AST { astNode = ASTInteger b } =
return $ makeNonsenseAST $ ASTInteger $ a * b
fn2 _ ast2 = throwL $ argError2 name ast1 ast2
fn1 _ ast1@AST { astNode = ASTDouble a } =
return $ makeNonsenseAST $ ASTFunction $ fn2 where
fn2 _ AST { astNode = ASTDouble b } =
return $ makeNonsenseAST $ ASTDouble $ a * b
fn2 _ ast2 = throwL $ argError2 name ast1 ast2
fn1 _ ast1 = throwL $ argError1 name ast1
builtinDivide2 :: (String, AST)
builtinDivide2 = (name, makeNonsenseAST $ ASTFunction fn1) where
name = "/"
fn1 _ ast1@AST { astNode = ASTInteger a } =
return $ makeNonsenseAST $ ASTFunction $ fn2 where
fn2 _ AST { astNode = ASTInteger b } =
do when (b == 0) $ throwL $ "division by zero"
return $ makeNonsenseAST $ ASTInteger $ a `div` b
fn2 _ ast2 = throwL $ argError2 name ast1 ast2
fn1 _ ast1@AST { astNode = ASTDouble a } =
return $ makeNonsenseAST $ ASTFunction $ fn2 where
fn2 _ AST { astNode = ASTDouble b } =
do when (b == 0) $ throwL $ "division by zero"
return $ makeNonsenseAST $ ASTDouble $ a / b
fn2 _ ast2 = throwL $ argError2 name ast1 ast2
fn1 _ ast1 = throwL $ argError1 name ast1
builtinEq2 :: (String, AST)
builtinEq2 = (name, makeNonsenseAST $ ASTFunction fn1) where
name = "eq?"
fn1 _ ast1 =
return $ makeNonsenseAST $ ASTFunction $ fn2 where
fn2 _ ast2 = return $ makeNonsenseAST $ ASTBoolean $ ast1 == ast2
builtinLt2 :: (String, AST)
builtinLt2 = (name, makeNonsenseAST $ ASTFunction fn1) where
name = "lt?"
fn1 _ ast1 =
return $ makeNonsenseAST $ ASTFunction $ fn2 where
fn2 _ ast2 = return $ makeNonsenseAST $ ASTBoolean $ ast1 <= ast2
builtinFloor :: (String, AST)
builtinFloor = (name, makeNonsenseAST $ ASTFunction fn1) where
name = "floor"
fn1 _ AST { astNode = ASTDouble dbl } = return $ makeNonsenseAST $ ASTInteger $ floor dbl
fn1 _ ast = throwL $ argError1 name ast
builtinToDouble :: (String, AST)
builtinToDouble = (name, makeNonsenseAST $ ASTFunction fn1) where
name = "to-double"
fn1 _ AST { astNode = ASTInteger int } = return $ makeNonsenseAST $ ASTDouble $ fromIntegral int
fn1 _ ast = throwL $ argError1 name ast
builtinFmt :: (String, AST)
builtinFmt = (name, makeNonsenseAST $ ASTFunction fn1) where
name = "fmt"
fn1 _ ast1@AST { astNode = ASTString str } =
return $ makeNonsenseAST $ ASTFunction $ fn2 where
fn2 _ AST { astNode = ASTVector replacements } =
return $ makeNonsenseAST $ ASTString $
T.unpack $ replaceAll (0 :: Int) replacements (T.pack str)
fn2 _ ast2 = throwL $ argError2 name ast1 ast2
fn1 _ ast1 = throwL $ argError1 name ast1
replaceAll _ [] text = text
replaceAll n (x:xs) text =
let text' = T.replace (T.pack $ "{" ++ show n ++ "}") (T.pack $ show x) text
in replaceAll (n + 1) xs text'
builtinHead :: (String, AST)
builtinHead = (name, makeNonsenseAST $ ASTFunction fn1) where
name = "head"
fn1 _ AST { astNode = ASTVector vec } =
do when (length vec == 0) $ throwL $ name ++ " of empty vector"
return $ head vec
fn1 _ ast = throwL $ argError1 name ast
builtinTail :: (String, AST)
builtinTail = (name, makeNonsenseAST $ ASTFunction fn1) where
name = "tail"
fn1 _ AST { astNode = ASTVector vec } =
do when (length vec == 0) $ throwL $ name ++ " of empty vector"
return $ makeNonsenseAST $ ASTVector $ tail vec
fn1 _ ast = throwL $ argError1 name ast
builtinSubstr :: (String, AST)
builtinSubstr = (name, makeNonsenseAST $ ASTFunction fn1) where
name = "substr"
fn1 _ ast1@AST { astNode = ASTInteger at } =
return $ makeNonsenseAST $ ASTFunction $ fn2 where
fn2 _ ast2@AST { astNode = ASTInteger len } =
return $ makeNonsenseAST $ ASTFunction $ fn3 where
fn3 _ AST { astNode = ASTString str } =
return $ makeNonsenseAST $ ASTString $ drop at .> take len $ str
fn3 _ ast3 = throwL $ argError3 name ast1 ast2 ast3
fn2 _ ast2 = throwL $ argError2 name ast1 ast2
fn1 _ ast1 = throwL $ argError1 name ast1
builtinPrepend :: (String, AST)
builtinPrepend = (name, makeNonsenseAST $ ASTFunction fn1) where
name = "prepend"
fn1 _ ast1 =
return $ makeNonsenseAST $ ASTFunction $ fn2 where
fn2 _ AST { astNode = ASTVector vec } =
return $ makeNonsenseAST $ ASTVector $ ast1 : vec
fn2 _ ast2 = throwL $ argError2 name ast1 ast2
builtinPrint :: (String, AST)
builtinPrint = (name, makeNonsenseAST $ ASTFunction fn1) where
name = "print!"
fn1 _ AST { astNode = ASTString str } =
do liftIO $ putStr $ str
return $ makeNonsenseAST ASTUnit
fn1 _ ast = throwL $ argError1 name ast
builtinConcat :: (String, AST)
builtinConcat = (name, makeNonsenseAST $ ASTFunction fn1) where
name = "concat"
fn1 _ ast1@AST { astNode = ASTString str1 } =
return $ makeNonsenseAST $ ASTFunction $ fn2 where
fn2 _ AST { astNode = ASTString str2 } =
return $ makeNonsenseAST $ ASTString $ str1 ++ str2
fn2 _ ast2 = throwL $ argError2 name ast1 ast2
fn1 _ ast1 = throwL $ argError1 name ast1
builtinFatal :: (String, AST)
builtinFatal = (name, makeNonsenseAST $ ASTFunction fn1) where
name = "fatal"
fn1 _ AST { astNode = ASTString str } =
throwL $ str
fn1 _ ast =
throwL $ argError1 name ast
|
