Commit | Line | Data |
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2e3d457e | 1 | // @import readline.ck |
674e1c56 VS |
2 | // @import types/boxed/*.ck |
3 | // @import types/MalObject.ck | |
98c1ecf2 VS |
4 | // @import types/mal/MalAtom.ck |
5 | // @import types/mal/MalError.ck | |
6 | // @import types/mal/MalNil.ck | |
7 | // @import types/mal/MalFalse.ck | |
8 | // @import types/mal/MalTrue.ck | |
9 | // @import types/mal/MalInt.ck | |
10 | // @import types/mal/MalString.ck | |
11 | // @import types/mal/MalSymbol.ck | |
12 | // @import types/mal/MalKeyword.ck | |
13 | // @import types/mal/MalList.ck | |
14 | // @import types/mal/MalVector.ck | |
15 | // @import types/mal/MalHashMap.ck | |
674e1c56 VS |
16 | // @import util/*.ck |
17 | // @import reader.ck | |
18 | // @import printer.ck | |
aa0ac94f | 19 | // @import env.ck |
7cabea4f | 20 | // @import func.ck |
674e1c56 VS |
21 | // @import types/MalSubr.ck |
22 | // @import types/subr/*.ck | |
674e1c56 | 23 | // @import core.ck |
674e1c56 VS |
24 | |
25 | fun MalObject READ(string input) | |
26 | { | |
27 | return Reader.read_str(input); | |
28 | } | |
29 | ||
30 | fun MalObject EVAL(MalObject m, Env env) | |
31 | { | |
32 | if( m.type == "list" ) | |
33 | { | |
34 | if( (m$MalList).value().size() == 0 ) | |
35 | { | |
36 | return m; | |
37 | } | |
38 | ||
39 | (m$MalList).value() @=> MalObject ast[]; | |
40 | ||
41 | if( ast[0].type == "symbol" ) | |
42 | { | |
43 | (ast[0]$MalSymbol).value() => string a0; | |
44 | ||
45 | if( a0 == "def!" ) | |
46 | { | |
47 | (ast[1]$MalSymbol).value() => string a1; | |
48 | ||
49 | EVAL(ast[2], env) @=> MalObject value; | |
50 | if( value.type == "error" ) | |
51 | { | |
52 | return value; | |
53 | } | |
54 | ||
55 | env.set(a1, value); | |
56 | return value; | |
57 | } | |
58 | else if( a0 == "let*" ) | |
59 | { | |
60 | Env.create(env) @=> Env let_env; | |
61 | Util.sequenceToMalObjectArray(ast[1]) @=> MalObject bindings[]; | |
62 | ||
63 | for( 0 => int i; i < bindings.size(); 2 +=> i) | |
64 | { | |
65 | (bindings[i]$MalSymbol).value() => string symbol; | |
66 | EVAL(bindings[i+1], let_env) @=> MalObject value; | |
67 | ||
68 | if( value.type == "error" ) | |
69 | { | |
70 | return value; | |
71 | } | |
72 | ||
73 | let_env.set(symbol, value); | |
74 | } | |
75 | ||
76 | return EVAL(ast[2], let_env); | |
77 | } | |
78 | else if( a0 == "do" ) | |
79 | { | |
80 | MalObject.slice(ast, 1) @=> MalObject forms[]; | |
81 | eval_ast(MalList.create(forms), env) @=> MalObject value; | |
82 | ||
83 | if( value.type == "error" ) | |
84 | { | |
85 | return value; | |
86 | } | |
87 | ||
88 | (value$MalList).value() @=> MalObject values[]; | |
89 | ||
90 | return values[values.size()-1]; | |
91 | } | |
92 | else if( a0 == "if" ) | |
93 | { | |
94 | EVAL(ast[1], env) @=> MalObject condition; | |
95 | ||
96 | if( condition.type == "error" ) | |
97 | { | |
98 | return condition; | |
99 | } | |
100 | ||
101 | if( !(condition.type == "nil") && !(condition.type == "false") ) | |
102 | { | |
103 | return EVAL(ast[2], env); | |
104 | } | |
105 | else | |
106 | { | |
107 | if( ast.size() < 4 ) | |
108 | { | |
f823ec25 | 109 | return Constants.NIL; |
674e1c56 VS |
110 | } |
111 | else | |
112 | { | |
113 | return EVAL(ast[3], env); | |
114 | } | |
115 | } | |
116 | } | |
117 | else if( a0 == "fn*" ) | |
118 | { | |
119 | (ast[1]$MalList).value() @=> MalObject arg_values[]; | |
120 | string args[arg_values.size()]; | |
121 | ||
122 | for( 0 => int i; i < arg_values.size(); i++ ) | |
123 | { | |
124 | (arg_values[i]$MalSymbol).value() => args[i]; | |
125 | } | |
126 | ||
127 | ast[2] @=> MalObject _ast; | |
128 | ||
129 | return Func.create(env, args, _ast); | |
130 | } | |
131 | } | |
132 | ||
133 | eval_ast(m, env) @=> MalObject result; | |
134 | if( result.type == "error" ) | |
135 | { | |
136 | return result; | |
137 | } | |
138 | ||
139 | (result$MalList).value() @=> MalObject values[]; | |
140 | values[0].type => string type; | |
141 | MalObject.slice(values, 1) @=> MalObject args[]; | |
142 | ||
143 | if( type == "subr" ) | |
144 | { | |
145 | values[0]$MalSubr @=> MalSubr subr; | |
146 | return subr.call(args); | |
147 | } | |
148 | else // type == "func" | |
149 | { | |
150 | values[0]$Func @=> Func func; | |
151 | Env.create(func.env, func.args, args) @=> Env eval_env; | |
152 | return EVAL(func.ast, eval_env); | |
153 | } | |
154 | } | |
155 | else | |
156 | { | |
157 | eval_ast(m, env) @=> MalObject result; | |
158 | return result; | |
159 | } | |
160 | } | |
161 | ||
162 | fun MalObject eval_ast(MalObject m, Env env) | |
163 | { | |
164 | m.type => string type; | |
165 | ||
166 | if( type == "symbol" ) | |
167 | { | |
168 | (m$MalSymbol).value() => string symbol; | |
169 | return env.get(symbol); | |
170 | } | |
171 | else if( type == "list" || type == "vector" || type == "hashmap" ) | |
172 | { | |
173 | (m$MalList).value() @=> MalObject values[]; | |
174 | MalObject results[values.size()]; | |
175 | ||
176 | if( type != "hashmap" ) | |
177 | { | |
178 | for( 0 => int i; i < values.size(); i++ ) | |
179 | { | |
180 | EVAL(values[i], env) @=> MalObject result; | |
181 | ||
182 | if( result.type == "error" ) | |
183 | { | |
184 | return result; | |
185 | } | |
186 | ||
187 | result @=> results[i]; | |
188 | } | |
189 | } | |
190 | else | |
191 | { | |
192 | for( 0 => int i; i < values.size(); i++ ) | |
193 | { | |
194 | if( i % 2 == 0 ) | |
195 | { | |
196 | values[i] @=> results[i]; | |
197 | } | |
198 | else | |
199 | { | |
200 | EVAL(values[i], env) @=> results[i]; | |
201 | } | |
202 | } | |
203 | } | |
204 | ||
205 | if( type == "list" ) | |
206 | { | |
207 | return MalList.create(results); | |
208 | } | |
209 | else if( type == "vector" ) | |
210 | { | |
211 | return MalVector.create(results); | |
212 | } | |
213 | else if( type == "hashmap" ) | |
214 | { | |
215 | return MalHashMap.create(results); | |
216 | } | |
217 | } | |
218 | else | |
219 | { | |
220 | return m; | |
221 | } | |
222 | } | |
223 | ||
224 | fun string PRINT(MalObject m) | |
225 | { | |
226 | return Printer.pr_str(m, true); | |
227 | } | |
228 | ||
229 | Env.create(null) @=> Env repl_env; | |
230 | for( 0 => int i; i < Core.names.size(); i++ ) | |
231 | { | |
232 | Core.names[i] => string name; | |
233 | repl_env.set(name, Core.ns[name]); | |
234 | } | |
235 | ||
98c1ecf2 VS |
236 | fun string errorMessage(MalObject m) |
237 | { | |
238 | (m$MalError).value() @=> MalObject value; | |
dd7a4f55 | 239 | return "exception: " + Printer.pr_str(value, true); |
98c1ecf2 VS |
240 | } |
241 | ||
674e1c56 VS |
242 | fun string rep(string input) |
243 | { | |
244 | READ(input) @=> MalObject m; | |
245 | ||
246 | if( m.type == "error" ) | |
247 | { | |
98c1ecf2 | 248 | return errorMessage(m); |
674e1c56 VS |
249 | } |
250 | ||
251 | EVAL(m, repl_env) @=> MalObject result; | |
252 | if( result.type == "error" ) | |
253 | { | |
98c1ecf2 | 254 | return errorMessage(result); |
674e1c56 VS |
255 | } |
256 | ||
257 | return PRINT(result); | |
258 | } | |
259 | ||
260 | rep("(def! not (fn* (a) (if a false true)))"); | |
261 | ||
262 | fun void main() | |
263 | { | |
2e3d457e | 264 | int done; |
674e1c56 | 265 | |
2e3d457e | 266 | while( !done ) |
674e1c56 | 267 | { |
2e3d457e | 268 | Readline.readline("user> ") => string input; |
674e1c56 | 269 | |
2e3d457e | 270 | if( input != null ) |
674e1c56 | 271 | { |
2e3d457e VS |
272 | rep(input) => string output; |
273 | ||
274 | if( output == "empty input" ) | |
275 | { | |
276 | // proceed immediately with prompt | |
277 | } | |
278 | else | |
279 | { | |
280 | Util.println(output); | |
281 | } | |
674e1c56 VS |
282 | } |
283 | else | |
284 | { | |
2e3d457e | 285 | true => done; |
674e1c56 VS |
286 | } |
287 | } | |
288 | } | |
289 | ||
290 | main(); |