| 1 | module Abs = Tiger_absyn |
| 2 | module Pos = Tiger_position |
| 3 | module Sym = Tiger_symbol |
| 4 | module Typ = Tiger_env_type |
| 5 | |
| 6 | type t = |
| 7 | | Cycle_in_type_decs of |
| 8 | { from_id : Sym.t |
| 9 | ; from_pos : Pos.t |
| 10 | ; to_id : Sym.t |
| 11 | ; to_pos : Pos.t |
| 12 | } |
| 13 | | Break_outside_loop of Pos.t |
| 14 | | Invalid_syntax of Pos.t |
| 15 | | Unknown_id of {id : Sym.t; pos : Pos.t} |
| 16 | | Unknown_type of {ty_id : Sym.t; pos : Pos.t} |
| 17 | | Id_is_a_function of {id : Sym.t; pos : Pos.t} |
| 18 | | Id_not_a_function of {id : Sym.t; pos : Pos.t} |
| 19 | | No_such_field_in_record of {field : Sym.t; record : Typ.t; pos : Pos.t} |
| 20 | | Exp_not_a_record of {ty : Typ.t; pos : Pos.t} |
| 21 | | Exp_not_an_array of {ty : Typ.t; pos : Pos.t} |
| 22 | | Wrong_type of |
| 23 | { expected : Typ.t |
| 24 | ; given : Typ.t |
| 25 | ; pos : Pos.t |
| 26 | } |
| 27 | | Wrong_type_of_expression_in_var_dec of |
| 28 | { var_id : Sym.t |
| 29 | ; expected : Typ.t |
| 30 | ; given : Typ.t |
| 31 | ; pos : Pos.t |
| 32 | } |
| 33 | | Wrong_type_used_as_record of |
| 34 | { ty_id : Sym.t |
| 35 | ; ty : Typ.t |
| 36 | ; pos : Pos.t |
| 37 | } |
| 38 | | Wrong_type_used_as_array of |
| 39 | { ty_id : Sym.t |
| 40 | ; ty : Typ.t |
| 41 | ; pos : Pos.t |
| 42 | } |
| 43 | | Wrong_type_of_field_value of |
| 44 | { field_id : Sym.t |
| 45 | ; expected : Typ.t |
| 46 | ; given : Typ.t |
| 47 | ; pos : Pos.t |
| 48 | } |
| 49 | | Wrong_type_of_arg of |
| 50 | { func : Sym.t |
| 51 | ; expected : Typ.t |
| 52 | ; given : Typ.t |
| 53 | ; pos : Pos.t |
| 54 | } |
| 55 | | Wrong_number_of_args of |
| 56 | { func : Sym.t |
| 57 | ; expected : int |
| 58 | ; given : int |
| 59 | ; pos : Pos.t |
| 60 | } |
| 61 | | Invalid_operand_type of |
| 62 | { oper : Abs.oper |
| 63 | ; valid : string list |
| 64 | ; given : Typ.t |
| 65 | ; pos : Pos.t |
| 66 | } |
| 67 | | Different_operand_types of |
| 68 | { oper : Abs.oper |
| 69 | ; left : Typ.t |
| 70 | ; right : Typ.t |
| 71 | ; pos : Pos.t |
| 72 | } |
| 73 | |
| 74 | exception T of t |
| 75 | |
| 76 | let raise t = |
| 77 | raise (T t) |
| 78 | |
| 79 | let to_string = |
| 80 | let s = Printf.sprintf in |
| 81 | function |
| 82 | | Invalid_syntax pos -> |
| 83 | s "Invalid syntax in %s" (Pos.to_string pos) |
| 84 | | Break_outside_loop pos -> |
| 85 | s "Break statement is not within a loop. In %s" (Pos.to_string pos) |
| 86 | | Cycle_in_type_decs {from_id; from_pos; to_id; to_pos} -> |
| 87 | s ( "Circular type declaration between %S and %S." |
| 88 | ^^"Locations: %S (in %s), %S (in %s).") |
| 89 | (Sym.to_string from_id) |
| 90 | (Sym.to_string to_id) |
| 91 | (Sym.to_string from_id) |
| 92 | (Pos.to_string from_pos) |
| 93 | (Sym.to_string to_id) |
| 94 | (Pos.to_string to_pos) |
| 95 | | Unknown_id {id; pos} -> |
| 96 | s "Unknown identifier %S in %s" (Sym.to_string id) (Pos.to_string pos) |
| 97 | | Unknown_type {ty_id; pos} -> |
| 98 | s "Unknown type %S in %s" (Sym.to_string ty_id) (Pos.to_string pos) |
| 99 | | Id_is_a_function {id; pos} -> |
| 100 | s "Identifier %S is a function, it cannot be used as a variable in %s" |
| 101 | (Sym.to_string id) (Pos.to_string pos) |
| 102 | | Id_not_a_function {id; pos} -> |
| 103 | s "Identifier %S is not a function, it cannot be called in %s" |
| 104 | (Sym.to_string id) (Pos.to_string pos) |
| 105 | | No_such_field_in_record {field; record; pos} -> |
| 106 | s "No field %S in record %S in %s" |
| 107 | (Sym.to_string field) (Typ.to_string record) (Pos.to_string pos) |
| 108 | | Exp_not_a_record {ty; pos} -> |
| 109 | s ( "The expression of type %S is not a record, it cannot be" |
| 110 | ^^"accessed in %s") |
| 111 | (Typ.to_string ty) (Pos.to_string pos) |
| 112 | | Exp_not_an_array {ty; pos} -> |
| 113 | s ( "The expression of type %S is not an array, it cannot be" |
| 114 | ^^"accessed in %s") |
| 115 | (Typ.to_string ty) (Pos.to_string pos) |
| 116 | | Wrong_type {expected; given; pos} -> |
| 117 | s "Type error: expected: %S, but given: %S, in %s" |
| 118 | (Typ.to_string expected) |
| 119 | (Typ.to_string given) |
| 120 | (Pos.to_string pos) |
| 121 | | Wrong_type_of_expression_in_var_dec {var_id; expected; given; pos} -> |
| 122 | s ( "Wrong type of expression in declaration of %S. " |
| 123 | ^^"Expected: %S, given: %S. In %s") |
| 124 | (Sym.to_string var_id) |
| 125 | (Typ.to_string expected) |
| 126 | (Typ.to_string given) |
| 127 | (Pos.to_string pos) |
| 128 | | Wrong_type_used_as_array {ty_id; ty; pos} -> |
| 129 | s ( "Identifier %S is bound to type %S, not an array. " |
| 130 | ^^"It cannot be used in %s") |
| 131 | (Sym.to_string ty_id) (Typ.to_string ty) (Pos.to_string pos) |
| 132 | | Wrong_type_used_as_record {ty_id; ty; pos} -> |
| 133 | s ( "Identifier %S is bound to type %S, not a record. " |
| 134 | ^^"It cannot be used in %s") |
| 135 | (Sym.to_string ty_id) (Typ.to_string ty) (Pos.to_string pos) |
| 136 | | Wrong_type_of_field_value {field_id; expected; given; pos} -> |
| 137 | s ( "Field %S is declared to be of type %S, but is bound to expression " |
| 138 | ^^"of type %S in %s") |
| 139 | (Sym.to_string field_id) |
| 140 | (Typ.to_string expected) |
| 141 | (Typ.to_string given) |
| 142 | (Pos.to_string pos) |
| 143 | | Wrong_type_of_arg {func; expected; given; pos} -> |
| 144 | s ( "Incorrect type of argument to function %S, expected: %S, given: %S," |
| 145 | ^^" in %s") |
| 146 | (Sym.to_string func) |
| 147 | (Typ.to_string expected) |
| 148 | (Typ.to_string given) |
| 149 | (Pos.to_string pos) |
| 150 | | Wrong_number_of_args {func; expected; given; pos} -> |
| 151 | s ( "Incorrect number of arguments to function %S, " |
| 152 | ^^"expected: %d, given: %d," |
| 153 | ^^" in %s") |
| 154 | (Sym.to_string func) expected given (Pos.to_string pos) |
| 155 | | Invalid_operand_type {oper; valid; given; pos} -> |
| 156 | s ( "Invalid operand type %S for operator %S, which expects only: %s" |
| 157 | ^^". In %s") |
| 158 | (Typ.to_string given) |
| 159 | (Abs.op_show oper) |
| 160 | (String.concat ", " valid) |
| 161 | (Pos.to_string pos) |
| 162 | | Different_operand_types {oper; left; right; pos} -> |
| 163 | s "Operands of different types (%S %S %S) given in %s" |
| 164 | (Typ.to_string left) |
| 165 | (Abs.op_show oper) |
| 166 | (Typ.to_string right) |
| 167 | (Pos.to_string pos) |
| 168 | |
| 169 | let is_unknown_id t = |
| 170 | match t with |
| 171 | | Unknown_id _ -> |
| 172 | true |
| 173 | | Break_outside_loop _ |
| 174 | | Cycle_in_type_decs _ |
| 175 | | Invalid_syntax _ |
| 176 | | Unknown_type _ |
| 177 | | Id_is_a_function _ |
| 178 | | Id_not_a_function _ |
| 179 | | No_such_field_in_record _ |
| 180 | | Exp_not_a_record _ |
| 181 | | Exp_not_an_array _ |
| 182 | | Wrong_type _ |
| 183 | | Wrong_type_of_expression_in_var_dec _ |
| 184 | | Wrong_type_used_as_array _ |
| 185 | | Wrong_type_used_as_record _ |
| 186 | | Wrong_type_of_field_value _ |
| 187 | | Wrong_type_of_arg _ |
| 188 | | Wrong_number_of_args _ |
| 189 | | Invalid_operand_type _ |
| 190 | | Different_operand_types _ -> |
| 191 | false |
| 192 | |
| 193 | let is_unknown_type t = |
| 194 | match t with |
| 195 | | Unknown_type _ -> |
| 196 | true |
| 197 | | Break_outside_loop _ |
| 198 | | Cycle_in_type_decs _ |
| 199 | | Unknown_id _ |
| 200 | | Invalid_syntax _ |
| 201 | | Id_is_a_function _ |
| 202 | | Id_not_a_function _ |
| 203 | | No_such_field_in_record _ |
| 204 | | Exp_not_a_record _ |
| 205 | | Exp_not_an_array _ |
| 206 | | Wrong_type _ |
| 207 | | Wrong_type_of_expression_in_var_dec _ |
| 208 | | Wrong_type_used_as_array _ |
| 209 | | Wrong_type_used_as_record _ |
| 210 | | Wrong_type_of_field_value _ |
| 211 | | Wrong_type_of_arg _ |
| 212 | | Wrong_number_of_args _ |
| 213 | | Invalid_operand_type _ |
| 214 | | Different_operand_types _ -> |
| 215 | false |
| 216 | |
| 217 | let is_wrong_type t = |
| 218 | match t with |
| 219 | | Wrong_type _ -> |
| 220 | true |
| 221 | | Break_outside_loop _ |
| 222 | | Cycle_in_type_decs _ |
| 223 | | Unknown_type _ |
| 224 | | Unknown_id _ |
| 225 | | Invalid_syntax _ |
| 226 | | Id_is_a_function _ |
| 227 | | Id_not_a_function _ |
| 228 | | No_such_field_in_record _ |
| 229 | | Exp_not_a_record _ |
| 230 | | Exp_not_an_array _ |
| 231 | | Wrong_type_of_expression_in_var_dec _ |
| 232 | | Wrong_type_used_as_array _ |
| 233 | | Wrong_type_used_as_record _ |
| 234 | | Wrong_type_of_field_value _ |
| 235 | | Wrong_type_of_arg _ |
| 236 | | Wrong_number_of_args _ |
| 237 | | Invalid_operand_type _ |
| 238 | | Different_operand_types _ -> |
| 239 | false |
| 240 | |
| 241 | let is_wrong_number_of_args t = |
| 242 | match t with |
| 243 | | Wrong_number_of_args _ -> |
| 244 | true |
| 245 | | Break_outside_loop _ |
| 246 | | Cycle_in_type_decs _ |
| 247 | | Wrong_type _ |
| 248 | | Unknown_type _ |
| 249 | | Unknown_id _ |
| 250 | | Invalid_syntax _ |
| 251 | | Id_is_a_function _ |
| 252 | | Id_not_a_function _ |
| 253 | | No_such_field_in_record _ |
| 254 | | Exp_not_a_record _ |
| 255 | | Exp_not_an_array _ |
| 256 | | Wrong_type_of_expression_in_var_dec _ |
| 257 | | Wrong_type_used_as_array _ |
| 258 | | Wrong_type_used_as_record _ |
| 259 | | Wrong_type_of_field_value _ |
| 260 | | Wrong_type_of_arg _ |
| 261 | | Invalid_operand_type _ |
| 262 | | Different_operand_types _ -> |
| 263 | false |
| 264 | |
| 265 | let is_invalid_syntax t = |
| 266 | match t with |
| 267 | | Invalid_syntax _ -> |
| 268 | true |
| 269 | | Break_outside_loop _ |
| 270 | | Cycle_in_type_decs _ |
| 271 | | Wrong_type _ |
| 272 | | Unknown_type _ |
| 273 | | Unknown_id _ |
| 274 | | Id_is_a_function _ |
| 275 | | Id_not_a_function _ |
| 276 | | No_such_field_in_record _ |
| 277 | | Exp_not_a_record _ |
| 278 | | Exp_not_an_array _ |
| 279 | | Wrong_type_of_expression_in_var_dec _ |
| 280 | | Wrong_type_used_as_array _ |
| 281 | | Wrong_type_used_as_record _ |
| 282 | | Wrong_type_of_field_value _ |
| 283 | | Wrong_type_of_arg _ |
| 284 | | Wrong_number_of_args _ |
| 285 | | Invalid_operand_type _ |
| 286 | | Different_operand_types _ -> |
| 287 | false |
| 288 | |
| 289 | let is_not_a_record t = |
| 290 | match t with |
| 291 | | Exp_not_a_record _ -> |
| 292 | true |
| 293 | | Break_outside_loop _ |
| 294 | | Cycle_in_type_decs _ |
| 295 | | Invalid_syntax _ |
| 296 | | Wrong_type _ |
| 297 | | Unknown_type _ |
| 298 | | Unknown_id _ |
| 299 | | Id_is_a_function _ |
| 300 | | Id_not_a_function _ |
| 301 | | No_such_field_in_record _ |
| 302 | | Exp_not_an_array _ |
| 303 | | Wrong_type_of_expression_in_var_dec _ |
| 304 | | Wrong_type_used_as_array _ |
| 305 | | Wrong_type_used_as_record _ |
| 306 | | Wrong_type_of_field_value _ |
| 307 | | Wrong_type_of_arg _ |
| 308 | | Wrong_number_of_args _ |
| 309 | | Invalid_operand_type _ |
| 310 | | Different_operand_types _ -> |
| 311 | false |
| 312 | |
| 313 | let is_not_an_array t = |
| 314 | match t with |
| 315 | | Exp_not_an_array _ -> |
| 316 | true |
| 317 | | Break_outside_loop _ |
| 318 | | Cycle_in_type_decs _ |
| 319 | | Exp_not_a_record _ |
| 320 | | Invalid_syntax _ |
| 321 | | Wrong_type _ |
| 322 | | Unknown_type _ |
| 323 | | Unknown_id _ |
| 324 | | Id_is_a_function _ |
| 325 | | Id_not_a_function _ |
| 326 | | No_such_field_in_record _ |
| 327 | | Wrong_type_of_expression_in_var_dec _ |
| 328 | | Wrong_type_used_as_array _ |
| 329 | | Wrong_type_used_as_record _ |
| 330 | | Wrong_type_of_field_value _ |
| 331 | | Wrong_type_of_arg _ |
| 332 | | Wrong_number_of_args _ |
| 333 | | Invalid_operand_type _ |
| 334 | | Different_operand_types _ -> |
| 335 | false |
| 336 | |
| 337 | let is_no_such_field_in_record t = |
| 338 | match t with |
| 339 | | No_such_field_in_record _ -> |
| 340 | true |
| 341 | | Break_outside_loop _ |
| 342 | | Cycle_in_type_decs _ |
| 343 | | Exp_not_an_array _ |
| 344 | | Exp_not_a_record _ |
| 345 | | Invalid_syntax _ |
| 346 | | Wrong_type _ |
| 347 | | Unknown_type _ |
| 348 | | Unknown_id _ |
| 349 | | Id_is_a_function _ |
| 350 | | Id_not_a_function _ |
| 351 | | Wrong_type_of_expression_in_var_dec _ |
| 352 | | Wrong_type_used_as_array _ |
| 353 | | Wrong_type_used_as_record _ |
| 354 | | Wrong_type_of_field_value _ |
| 355 | | Wrong_type_of_arg _ |
| 356 | | Wrong_number_of_args _ |
| 357 | | Invalid_operand_type _ |
| 358 | | Different_operand_types _ -> |
| 359 | false |
| 360 | |
| 361 | let is_cycle_in_type_dec t = |
| 362 | match t with |
| 363 | | Cycle_in_type_decs _ -> |
| 364 | true |
| 365 | | Break_outside_loop _ |
| 366 | | No_such_field_in_record _ |
| 367 | | Exp_not_an_array _ |
| 368 | | Exp_not_a_record _ |
| 369 | | Invalid_syntax _ |
| 370 | | Wrong_type _ |
| 371 | | Unknown_type _ |
| 372 | | Unknown_id _ |
| 373 | | Id_is_a_function _ |
| 374 | | Id_not_a_function _ |
| 375 | | Wrong_type_of_expression_in_var_dec _ |
| 376 | | Wrong_type_used_as_array _ |
| 377 | | Wrong_type_used_as_record _ |
| 378 | | Wrong_type_of_field_value _ |
| 379 | | Wrong_type_of_arg _ |
| 380 | | Wrong_number_of_args _ |
| 381 | | Invalid_operand_type _ |
| 382 | | Different_operand_types _ -> |
| 383 | false |
| 384 | |
| 385 | let is_break_outside_loop t = |
| 386 | match t with |
| 387 | | Break_outside_loop _ -> |
| 388 | true |
| 389 | | Cycle_in_type_decs _ |
| 390 | | No_such_field_in_record _ |
| 391 | | Exp_not_an_array _ |
| 392 | | Exp_not_a_record _ |
| 393 | | Invalid_syntax _ |
| 394 | | Wrong_type _ |
| 395 | | Unknown_type _ |
| 396 | | Unknown_id _ |
| 397 | | Id_is_a_function _ |
| 398 | | Id_not_a_function _ |
| 399 | | Wrong_type_of_expression_in_var_dec _ |
| 400 | | Wrong_type_used_as_array _ |
| 401 | | Wrong_type_used_as_record _ |
| 402 | | Wrong_type_of_field_value _ |
| 403 | | Wrong_type_of_arg _ |
| 404 | | Wrong_number_of_args _ |
| 405 | | Invalid_operand_type _ |
| 406 | | Different_operand_types _ -> |
| 407 | false |