Commit | Line | Data |
---|---|---|
543d3420 SK |
1 | %{ |
2 | open Printf | |
3 | %} | |
4 | ||
5 | /* Declarations */ | |
6 | %token AND | |
7 | %token ARRAY | |
8 | %token ASSIGN | |
9 | %token BREAK | |
10 | %token COLON | |
11 | %token COMMA | |
12 | %token DIVIDE | |
13 | %token DO | |
14 | %token DOT | |
15 | %token ELSE | |
16 | %token END | |
17 | %token EOF | |
18 | %token EQ | |
19 | %token FOR | |
20 | %token FUNCTION | |
21 | %token GE | |
22 | %token GT | |
23 | %token <string> ID | |
24 | %token IF | |
25 | %token IN | |
26 | %token <int> INT | |
27 | %token LBRACE | |
28 | %token LBRACK | |
29 | %token LE | |
30 | %token LET | |
31 | %token LPAREN | |
32 | %token LT | |
33 | %token MINUS | |
34 | %token NEQ | |
35 | %token NIL | |
36 | %token OF | |
37 | %token OR | |
38 | %token PLUS | |
39 | %token RBRACE | |
40 | %token RBRACK | |
41 | %token RPAREN | |
42 | %token SEMICOLON | |
43 | %token <string> STRING | |
44 | %token THEN | |
45 | %token TIMES | |
46 | %token TO | |
47 | %token TYPE | |
48 | %token VAR | |
49 | %token WHILE | |
50 | ||
51 | /* from lowest precedence */ | |
7c9381cf | 52 | %left THEN |
b0047ce7 | 53 | %left ELSE |
c7598faf | 54 | %nonassoc ASSIGN |
ccbe4cfc | 55 | %left OF DO |
543d3420 SK |
56 | %left OR |
57 | %left AND | |
58 | %nonassoc EQ NEQ GT LT GE LE | |
59 | %left PLUS MINUS | |
60 | %left TIMES DIVIDE | |
61 | %nonassoc UMINUS | |
62 | /* to highest precedence */ | |
63 | ||
64 | %type <string> program | |
65 | ||
66 | %start program | |
67 | ||
68 | %% | |
69 | ||
70 | program: | |
71 | | exp EOF | |
72 | { | |
73 | sprintf "program[%s]" $1 | |
74 | } | |
a0db5523 | 75 | ; |
543d3420 SK |
76 | |
77 | exp: | |
78 | | NIL | |
79 | { | |
80 | "nil[]" | |
81 | } | |
82 | | INT | |
83 | { | |
84 | sprintf "int[%d]" $1 | |
85 | } | |
86 | | MINUS exp %prec UMINUS | |
87 | { | |
88 | sprintf "negation[%s]" $2 | |
89 | } | |
ef945634 | 90 | | ID LBRACK exp RBRACK OF exp |
543d3420 | 91 | { |
ef945634 | 92 | let type_id = $1 in |
a0db5523 SK |
93 | let number_of_elements = $3 in |
94 | let initial_value = $6 in | |
95 | sprintf | |
96 | "array[type[%s], size[%s], val[%s]]" | |
97 | type_id number_of_elements initial_value | |
543d3420 | 98 | } |
ef945634 | 99 | | ID LBRACE rec_field_assignments RBRACE |
543d3420 | 100 | { |
ef945634 SK |
101 | let type_id = $1 in |
102 | let rec_field_assignments = $3 in | |
103 | sprintf | |
104 | "record[type[%s], rec_field_assignments[%s]]" | |
105 | type_id rec_field_assignments | |
543d3420 SK |
106 | } |
107 | | lvalue | |
108 | { | |
109 | $1 | |
110 | } | |
111 | | lvalue ASSIGN exp | |
112 | { | |
113 | sprintf "assign[%s := %s]" $1 $3 | |
114 | } | |
115 | | STRING | |
116 | { | |
117 | sprintf "string[%S]" $1 | |
118 | } | |
b9397ef5 | 119 | | ID LPAREN RPAREN |
543d3420 | 120 | { |
29de275c SK |
121 | let id = $1 in |
122 | sprintf "fun_call[%s, []]" id | |
123 | } | |
124 | | ID LPAREN fun_args RPAREN | |
125 | { | |
126 | let id = $1 in | |
127 | let fun_args = $3 in | |
128 | sprintf "fun_call[%s, %s]" id fun_args | |
543d3420 | 129 | } |
6a74bf44 | 130 | | exp PLUS exp |
543d3420 | 131 | { |
6a74bf44 SK |
132 | sprintf "op_plus[%s + %s]" $1 $3 |
133 | } | |
134 | | exp MINUS exp | |
135 | { | |
136 | sprintf "op_minus[%s - %s]" $1 $3 | |
137 | } | |
138 | | exp TIMES exp | |
139 | { | |
140 | sprintf "op_times[%s * %s]" $1 $3 | |
141 | } | |
142 | | exp DIVIDE exp | |
143 | { | |
144 | sprintf "op_divide[%s / %s]" $1 $3 | |
145 | } | |
146 | | exp EQ exp | |
147 | { | |
148 | sprintf "op_eq[%s = %s]" $1 $3 | |
149 | } | |
150 | | exp NEQ exp | |
151 | { | |
152 | sprintf "op_neq[%s <> %s]" $1 $3 | |
153 | } | |
154 | | exp GT exp | |
155 | { | |
156 | sprintf "op_gt[%s > %s]" $1 $3 | |
157 | } | |
158 | | exp LT exp | |
159 | { | |
160 | sprintf "op_lt[%s < %s]" $1 $3 | |
161 | } | |
162 | | exp GE exp | |
163 | { | |
164 | sprintf "op_ge[%s >= %s]" $1 $3 | |
165 | } | |
166 | | exp LE exp | |
167 | { | |
168 | sprintf "op_le[%s <= %s]" $1 $3 | |
169 | } | |
170 | | exp AND exp | |
171 | { | |
172 | sprintf "op_and[%s & %s]" $1 $3 | |
173 | } | |
174 | | exp OR exp | |
175 | { | |
176 | sprintf "op_or[%s | %s]" $1 $3 | |
543d3420 SK |
177 | } |
178 | | IF exp THEN exp ELSE exp | |
179 | { | |
180 | let e1 = $2 in | |
181 | let e2 = $4 in | |
182 | let e3 = $6 in | |
183 | sprintf "if_then_else[%s, then[%s], else[%s]]" e1 e2 e3 | |
184 | } | |
185 | | IF exp THEN exp | |
186 | { | |
187 | sprintf "if_then[%s, then[%s]]" $2 $4 | |
188 | } | |
189 | | WHILE exp DO exp | |
190 | { | |
191 | sprintf "while[%s, do[%s]]" $2 $4 | |
192 | } | |
ffff6f35 | 193 | | FOR ID ASSIGN exp TO exp DO exp |
543d3420 SK |
194 | { |
195 | let id = $2 in | |
196 | let e1 = $4 in | |
197 | let e2 = $6 in | |
198 | let e3 = $8 in | |
199 | sprintf "for[%s := %s, to[%s], do[%s]]" id e1 e2 e3 | |
200 | } | |
201 | | BREAK | |
202 | { | |
203 | "break[]" | |
204 | } | |
e7dfac93 | 205 | | LPAREN exps RPAREN |
543d3420 | 206 | { |
e7dfac93 | 207 | sprintf "exps[%s]" $2 |
543d3420 | 208 | } |
e7dfac93 | 209 | | LET decs IN exps END |
543d3420 SK |
210 | { |
211 | let decs = $2 in | |
e7dfac93 SK |
212 | let exps = $4 in |
213 | sprintf "let[decs[%s], in[exps[%s]]]" decs exps | |
543d3420 | 214 | } |
b9397ef5 | 215 | | LPAREN RPAREN |
543d3420 | 216 | { |
b9397ef5 SK |
217 | (* Perhaps "void"? *) |
218 | "unit[]" | |
543d3420 | 219 | } |
a0db5523 | 220 | ; |
543d3420 | 221 | |
b3c9d54d SK |
222 | rec_field_assignments: |
223 | | ID EQ exp | |
224 | { | |
225 | let id = $1 in | |
226 | let exp = $3 in | |
227 | sprintf "%S = %s" id exp | |
228 | } | |
229 | | ID EQ exp COMMA rec_field_assignments | |
230 | { | |
231 | let id = $1 in | |
232 | let exp = $3 in | |
233 | let rec_field_assignments = $5 in | |
234 | sprintf "%S = %s, %s" id exp rec_field_assignments | |
235 | } | |
a0db5523 | 236 | ; |
b3c9d54d | 237 | |
e7dfac93 | 238 | exps: |
543d3420 SK |
239 | | exp |
240 | { | |
a0db5523 SK |
241 | let exp = $1 in |
242 | sprintf "%s" exp | |
543d3420 | 243 | } |
e7dfac93 | 244 | | exp SEMICOLON exps |
543d3420 | 245 | { |
a0db5523 SK |
246 | let exp = $1 in |
247 | let exps = $3 in | |
248 | sprintf "%s; %s" exp exps | |
543d3420 | 249 | } |
a0db5523 | 250 | ; |
543d3420 SK |
251 | |
252 | decs: | |
253 | | dec | |
254 | { | |
255 | sprintf "%s" $1 | |
256 | } | |
257 | | dec decs | |
258 | { | |
259 | sprintf "%s %s" $1 $2 | |
260 | } | |
a0db5523 | 261 | ; |
543d3420 SK |
262 | |
263 | dec: | |
3fbeb7c1 SK |
264 | /* Tydec */ |
265 | | TYPE ID EQ ID | |
ef945634 | 266 | { |
3fbeb7c1 SK |
267 | let type_id_new = $2 in |
268 | let type_id_orig = $4 in | |
269 | sprintf "tydec_alias[from[%s], to[%s]]" type_id_new type_id_orig | |
ef945634 | 270 | } |
3fbeb7c1 | 271 | | TYPE ID EQ LBRACE RBRACE |
543d3420 | 272 | { |
3fbeb7c1 SK |
273 | let type_id = $2 in |
274 | sprintf "tydec_empty_record[%s]" type_id | |
543d3420 | 275 | } |
3fbeb7c1 | 276 | | TYPE ID EQ LBRACE tyfields RBRACE |
543d3420 | 277 | { |
3fbeb7c1 SK |
278 | let type_id = $2 in |
279 | let tyfields = $5 in | |
280 | sprintf "tydec_record[%s, fields[%s]]" type_id tyfields | |
281 | } | |
282 | | TYPE ID EQ ARRAY OF ID | |
283 | { | |
284 | let type_id = $2 in | |
285 | let element_type_id = $6 in | |
286 | sprintf "tydec_array[%s, elements_of_type[%s]]" type_id element_type_id | |
543d3420 SK |
287 | } |
288 | ||
3fbeb7c1 | 289 | /* Vardec */ |
ffff6f35 | 290 | | VAR ID ASSIGN exp |
543d3420 SK |
291 | { |
292 | let id = $2 in | |
293 | let exp = $4 in | |
294 | sprintf "vardec[%s, exp[%s]]" id exp | |
295 | } | |
ffff6f35 | 296 | | VAR ID COLON ID ASSIGN exp |
543d3420 SK |
297 | { |
298 | let id = $2 in | |
ef945634 | 299 | let type_id = $4 in |
543d3420 | 300 | let exp = $6 in |
ef945634 | 301 | sprintf "vardec[%s, type_id[%s], exp[%s]]" id type_id exp |
543d3420 SK |
302 | } |
303 | ||
3fbeb7c1 SK |
304 | /* Fundec */ |
305 | | FUNCTION ID LPAREN RPAREN EQ exp | |
543d3420 | 306 | { |
3fbeb7c1 SK |
307 | let id = $2 in |
308 | let exp = $6 in | |
309 | sprintf "fundec[%s, arguments[], exp[%s]]" id exp | |
543d3420 | 310 | } |
3fbeb7c1 | 311 | | FUNCTION ID LPAREN tyfields RPAREN EQ exp |
543d3420 | 312 | { |
3fbeb7c1 SK |
313 | let id = $2 in |
314 | let tyfields = $4 in | |
315 | let exp = $7 in | |
316 | sprintf "fundec[%s, arguments[%s], exp[%s]]" id tyfields exp | |
543d3420 | 317 | } |
3fbeb7c1 | 318 | | FUNCTION ID LPAREN tyfields RPAREN COLON ID EQ exp |
543d3420 | 319 | { |
3fbeb7c1 SK |
320 | let id = $2 in |
321 | let tyfields = $4 in | |
322 | let type_id = $7 in | |
323 | let exp = $9 in | |
324 | sprintf | |
325 | "fundec[%s, tyfields[%s], type_id[%s], exp[%s]]" | |
326 | id tyfields type_id exp | |
543d3420 | 327 | } |
a0db5523 | 328 | ; |
543d3420 SK |
329 | |
330 | tyfields: | |
a87678f0 | 331 | | ID COLON ID |
543d3420 | 332 | { |
a87678f0 SK |
333 | let id_1 = $1 in |
334 | let id_2 = $3 in | |
335 | sprintf "%s : %s" id_1 id_2 | |
543d3420 | 336 | } |
a87678f0 | 337 | | ID COLON ID COMMA tyfields |
543d3420 | 338 | { |
a87678f0 SK |
339 | let id_1 = $1 in |
340 | let id_2 = $3 in | |
341 | let tyfield = sprintf "%s : %s" id_1 id_2 in | |
342 | let tyfields = $5 in | |
343 | sprintf "%s, %s" tyfield tyfields | |
543d3420 | 344 | } |
a0db5523 | 345 | ; |
543d3420 | 346 | |
543d3420 SK |
347 | fun_args: |
348 | | exp | |
349 | { | |
350 | $1 | |
351 | } | |
352 | | exp COMMA fun_args | |
353 | { | |
354 | sprintf "%s, %s" $1 $3 | |
355 | } | |
a0db5523 | 356 | ; |
543d3420 | 357 | |
543d3420 | 358 | lvalue: |
a0db5523 | 359 | | ID lvalue_part |
543d3420 | 360 | { |
ffff6f35 | 361 | let id = $1 in |
a0db5523 SK |
362 | let part = $2 in |
363 | sprintf "lvalue[%s, part[%s]]" id part | |
543d3420 | 364 | } |
a0db5523 SK |
365 | ; |
366 | ||
367 | lvalue_part: | |
368 | | {"epsilon[]"} | |
369 | | lvalue_subscript {$1} | |
370 | | lvalue_field_access {$1} | |
371 | ; | |
372 | ||
373 | lvalue_subscript: | |
374 | | LBRACK exp RBRACK | |
543d3420 | 375 | { |
a0db5523 SK |
376 | let exp = $2 in |
377 | sprintf "subscript[%s]" exp | |
543d3420 | 378 | } |
a0db5523 SK |
379 | ; |
380 | ||
381 | lvalue_field_access: | |
382 | | DOT ID | |
543d3420 | 383 | { |
a0db5523 SK |
384 | let field = $2 in |
385 | sprintf "field_access[%s]" field | |
543d3420 | 386 | } |
a0db5523 | 387 | ; |
543d3420 SK |
388 | |
389 | %% |