| 1 | with Ada.Command_Line; |
| 2 | with Ada.Exceptions; |
| 3 | with Ada.Text_IO; |
| 4 | with Core; |
| 5 | with Envs; |
| 6 | with Eval_Callback; |
| 7 | with Printer; |
| 8 | with Reader; |
| 9 | with Smart_Pointers; |
| 10 | with Types; |
| 11 | |
| 12 | procedure Step9_Try is |
| 13 | |
| 14 | use Types; |
| 15 | |
| 16 | function Eval (AParam : Types.Mal_Handle; AnEnv : Envs.Env_Handle) |
| 17 | return Types.Mal_Handle; |
| 18 | |
| 19 | Debug : Boolean := False; |
| 20 | |
| 21 | |
| 22 | function Read (Param : String) return Types.Mal_Handle is |
| 23 | begin |
| 24 | return Reader.Read_Str (Param); |
| 25 | end Read; |
| 26 | |
| 27 | |
| 28 | function Def_Fn (Args : List_Mal_Type; Env : Envs.Env_Handle) |
| 29 | return Mal_Handle is |
| 30 | Name, Fn_Body, Res : Mal_Handle; |
| 31 | begin |
| 32 | Name := Car (Args); |
| 33 | pragma Assert (Deref (Name).Sym_Type = Sym, |
| 34 | "Def_Fn: expected atom as name"); |
| 35 | Fn_Body := Nth (Args, 1); |
| 36 | Res := Eval (Fn_Body, Env); |
| 37 | Envs.Set (Env, Deref_Sym (Name).Get_Sym, Res); |
| 38 | return Res; |
| 39 | end Def_Fn; |
| 40 | |
| 41 | |
| 42 | function Def_Macro (Args : List_Mal_Type; Env : Envs.Env_Handle) |
| 43 | return Mal_Handle is |
| 44 | Name, Fn_Body, Res : Mal_Handle; |
| 45 | Lambda_P : Lambda_Ptr; |
| 46 | begin |
| 47 | Name := Car (Args); |
| 48 | pragma Assert (Deref (Name).Sym_Type = Sym, |
| 49 | "Def_Macro: expected atom as name"); |
| 50 | Fn_Body := Car (Deref_List (Cdr (Args)).all); |
| 51 | Res := Eval (Fn_Body, Env); |
| 52 | Lambda_P := Deref_Lambda (Res); |
| 53 | Lambda_P.Set_Is_Macro (True); |
| 54 | Envs.Set (Env, Deref_Sym (Name).Get_Sym, Res); |
| 55 | return Res; |
| 56 | end Def_Macro; |
| 57 | |
| 58 | |
| 59 | function Macro_Expand (Ast : Mal_Handle; Env : Envs.Env_Handle) |
| 60 | return Mal_Handle is |
| 61 | Res : Mal_Handle; |
| 62 | E : Envs.Env_Handle; |
| 63 | LMT : List_Mal_Type; |
| 64 | LP : Lambda_Ptr; |
| 65 | begin |
| 66 | |
| 67 | Res := Ast; |
| 68 | E := Env; |
| 69 | |
| 70 | loop |
| 71 | |
| 72 | if Deref (Res).Sym_Type /= List then |
| 73 | exit; |
| 74 | end if; |
| 75 | |
| 76 | LMT := Deref_List (Res).all; |
| 77 | |
| 78 | -- Get the macro in the list from the env |
| 79 | -- or return null if not applicable. |
| 80 | LP := Get_Macro (Res, E); |
| 81 | |
| 82 | exit when LP = null or else not LP.Get_Is_Macro; |
| 83 | |
| 84 | declare |
| 85 | Fn_List : Mal_Handle := Cdr (LMT); |
| 86 | Params : List_Mal_Type; |
| 87 | begin |
| 88 | E := Envs.New_Env (E); |
| 89 | |
| 90 | Params := Deref_List (LP.Get_Params).all; |
| 91 | if Envs.Bind (E, Params, Deref_List (Fn_List).all) then |
| 92 | |
| 93 | Res := Eval (LP.Get_Expr, E); |
| 94 | |
| 95 | end if; |
| 96 | |
| 97 | end; |
| 98 | |
| 99 | end loop; |
| 100 | |
| 101 | return Res; |
| 102 | |
| 103 | end Macro_Expand; |
| 104 | |
| 105 | |
| 106 | function Eval_As_Boolean (MH : Mal_Handle) return Boolean is |
| 107 | Res : Boolean; |
| 108 | begin |
| 109 | case Deref (MH).Sym_Type is |
| 110 | when Bool => |
| 111 | Res := Deref_Bool (MH).Get_Bool; |
| 112 | when Nil => |
| 113 | return False; |
| 114 | -- when List => |
| 115 | -- declare |
| 116 | -- L : List_Mal_Type; |
| 117 | -- begin |
| 118 | -- L := Deref_List (MH).all; |
| 119 | -- Res := not Is_Null (L); |
| 120 | -- end; |
| 121 | when others => -- Everything else |
| 122 | Res := True; |
| 123 | end case; |
| 124 | return Res; |
| 125 | end Eval_As_Boolean; |
| 126 | |
| 127 | |
| 128 | function Eval_Ast |
| 129 | (Ast : Mal_Handle; Env : Envs.Env_Handle) |
| 130 | return Mal_Handle is |
| 131 | |
| 132 | function Call_Eval (A : Mal_Handle) return Mal_Handle is |
| 133 | begin |
| 134 | return Eval (A, Env); |
| 135 | end Call_Eval; |
| 136 | |
| 137 | begin |
| 138 | |
| 139 | case Deref (Ast).Sym_Type is |
| 140 | |
| 141 | when Sym => |
| 142 | |
| 143 | declare |
| 144 | Sym : Mal_String := Deref_Sym (Ast).Get_Sym; |
| 145 | begin |
| 146 | -- if keyword, return it. Otherwise look it up in the environment. |
| 147 | if Sym(1) = ':' then |
| 148 | return Ast; |
| 149 | else |
| 150 | return Envs.Get (Env, Sym); |
| 151 | end if; |
| 152 | exception |
| 153 | when Envs.Not_Found => |
| 154 | raise Envs.Not_Found with ("'" & Sym & "' not found"); |
| 155 | end; |
| 156 | |
| 157 | when List => |
| 158 | |
| 159 | return Map (Call_Eval'Unrestricted_Access, Deref_List_Class (Ast).all); |
| 160 | |
| 161 | when others => return Ast; |
| 162 | |
| 163 | end case; |
| 164 | |
| 165 | end Eval_Ast; |
| 166 | |
| 167 | function Starts_With (Ast : Mal_Handle; Symbol : String) return Boolean is |
| 168 | A0 : Mal_Handle; |
| 169 | begin |
| 170 | if Deref (Ast).Sym_Type /= List |
| 171 | or else Deref_List_Class (Ast).Get_List_Type /= List_List |
| 172 | or else Deref_List (Ast).Is_Null |
| 173 | then |
| 174 | return False; |
| 175 | end if; |
| 176 | A0 := Deref_List (Ast).Car; |
| 177 | return Deref (A0).Sym_Type = Sym |
| 178 | and then Deref_Sym (A0).Get_Sym = Symbol; |
| 179 | end Starts_With; |
| 180 | |
| 181 | function Quasi_Quote_Processing (Param : Mal_Handle) return Mal_Handle is |
| 182 | Res, Elt, New_Res : Mal_Handle; |
| 183 | L : List_Ptr; |
| 184 | begin |
| 185 | |
| 186 | if Debug then |
| 187 | Ada.Text_IO.Put_Line ("QuasiQt " & Deref (Param).To_String); |
| 188 | end if; |
| 189 | |
| 190 | if Deref (Param).Sym_Type not in Sym | List then |
| 191 | -- No need to quote, Eval would not affect these anyway. |
| 192 | return Param; |
| 193 | end if; |
| 194 | |
| 195 | if Deref (Param).Sym_Type /= List or else |
| 196 | Deref_List_Class (Param).Get_List_Type = Hashed_List then |
| 197 | |
| 198 | -- return a new list containing: a symbol named "quote" and ast. |
| 199 | Res := New_List_Mal_Type (List_List); |
| 200 | L := Deref_List (Res); |
| 201 | L.Append (New_Symbol_Mal_Type ("quote")); |
| 202 | L.Append (Param); |
| 203 | return Res; |
| 204 | |
| 205 | end if; |
| 206 | |
| 207 | -- if the first element of ast is a symbol named "unquote": |
| 208 | if Starts_With (Param, "unquote") then |
| 209 | -- return the second element of ast.` |
| 210 | return Deref_List_Class (Param).Nth (1); |
| 211 | |
| 212 | end if; |
| 213 | |
| 214 | Res := New_List_Mal_Type (List_List); |
| 215 | |
| 216 | for I in reverse 0 .. Deref_List_Class (Param).Length - 1 loop |
| 217 | Elt := Deref_List_Class (Param).Nth (I); |
| 218 | New_Res := New_List_Mal_Type (List_List); |
| 219 | L := Deref_List (New_Res); |
| 220 | if Starts_With (Elt, "splice-unquote") then |
| 221 | L.Append (New_Symbol_Mal_Type ("concat")); |
| 222 | L.Append (Deref_List (Elt).Nth (1)); |
| 223 | else |
| 224 | L.Append (New_Symbol_Mal_Type ("cons")); |
| 225 | L.Append (Quasi_Quote_Processing (Elt)); |
| 226 | end if; |
| 227 | L.Append (Res); |
| 228 | Res := New_Res; |
| 229 | end loop; |
| 230 | |
| 231 | if Deref_List_Class (Param).Get_List_Type = Vector_List then |
| 232 | New_Res := New_List_Mal_Type (List_List); |
| 233 | L := Deref_List (New_Res); |
| 234 | L.Append (New_Symbol_Mal_Type ("vec")); |
| 235 | L.Append (Res); |
| 236 | Res := New_Res; |
| 237 | end if; |
| 238 | |
| 239 | return Res; |
| 240 | |
| 241 | end Quasi_Quote_Processing; |
| 242 | |
| 243 | |
| 244 | function Catch_Processing |
| 245 | (Try_Line : Mal_Handle; |
| 246 | ExStr : Mal_Handle; |
| 247 | Env : Envs.Env_Handle) |
| 248 | return Mal_Handle is |
| 249 | |
| 250 | L, CL, CL2, CL3 : List_Mal_Type; |
| 251 | C : Mal_Handle; |
| 252 | New_Env : Envs.Env_Handle; |
| 253 | |
| 254 | begin |
| 255 | |
| 256 | L := Deref_List (Try_Line).all; |
| 257 | C := Car (L); |
| 258 | -- CL is the list with the catch in. |
| 259 | CL := Deref_List (C).all; |
| 260 | |
| 261 | CL2 := Deref_List (Cdr (CL)).all; |
| 262 | New_Env := Envs.New_Env (Env); |
| 263 | Envs.Set (New_Env, Deref_Sym (Car (CL2)).Get_Sym, ExStr); |
| 264 | |
| 265 | CL3 := Deref_List (Cdr (CL2)).all; |
| 266 | return Eval (Car (CL3), New_Env); |
| 267 | end Catch_Processing; |
| 268 | |
| 269 | |
| 270 | function Eval (AParam : Mal_Handle; AnEnv : Envs.Env_Handle) |
| 271 | return Mal_Handle is |
| 272 | Param : Mal_Handle; |
| 273 | Env : Envs.Env_Handle; |
| 274 | First_Param, Rest_Params : Mal_Handle; |
| 275 | Rest_List, Param_List : List_Mal_Type; |
| 276 | begin |
| 277 | |
| 278 | Param := AParam; |
| 279 | Env := AnEnv; |
| 280 | |
| 281 | <<Tail_Call_Opt>> |
| 282 | |
| 283 | if Debug then |
| 284 | Ada.Text_IO.Put_Line ("Evaling " & Deref (Param).To_String); |
| 285 | end if; |
| 286 | |
| 287 | Param := Macro_Expand (Param, Env); |
| 288 | |
| 289 | if Debug then |
| 290 | Ada.Text_IO.Put_Line ("After expansion " & Deref (Param).To_String); |
| 291 | end if; |
| 292 | |
| 293 | if Deref (Param).Sym_Type = List and then |
| 294 | Deref_List (Param).Get_List_Type = List_List then |
| 295 | |
| 296 | Param_List := Deref_List (Param).all; |
| 297 | |
| 298 | -- Deal with empty list.. |
| 299 | if Param_List.Length = 0 then |
| 300 | return Param; |
| 301 | end if; |
| 302 | |
| 303 | First_Param := Car (Param_List); |
| 304 | Rest_Params := Cdr (Param_List); |
| 305 | Rest_List := Deref_List (Rest_Params).all; |
| 306 | |
| 307 | if Deref (First_Param).Sym_Type = Sym and then |
| 308 | Deref_Sym (First_Param).Get_Sym = "def!" then |
| 309 | return Def_Fn (Rest_List, Env); |
| 310 | elsif Deref (First_Param).Sym_Type = Sym and then |
| 311 | Deref_Sym (First_Param).Get_Sym = "defmacro!" then |
| 312 | return Def_Macro (Rest_List, Env); |
| 313 | elsif Deref (First_Param).Sym_Type = Sym and then |
| 314 | Deref_Sym (First_Param).Get_Sym = "macroexpand" then |
| 315 | return Macro_Expand (Car (Rest_List), Env); |
| 316 | elsif Deref (First_Param).Sym_Type = Sym and then |
| 317 | Deref_Sym (First_Param).Get_Sym = "let*" then |
| 318 | declare |
| 319 | Defs, Expr, Res : Mal_Handle; |
| 320 | E : Envs.Env_Handle; |
| 321 | begin |
| 322 | E := Envs.New_Env (Env); |
| 323 | Defs := Car (Rest_List); |
| 324 | Deref_List_Class (Defs).Add_Defs (E); |
| 325 | Expr := Car (Deref_List (Cdr (Rest_List)).all); |
| 326 | Param := Expr; |
| 327 | Env := E; |
| 328 | goto Tail_Call_Opt; |
| 329 | -- was: |
| 330 | -- Res := Eval (Expr, E); |
| 331 | -- return Res; |
| 332 | end; |
| 333 | elsif Deref (First_Param).Sym_Type = Sym and then |
| 334 | Deref_Sym (First_Param).Get_Sym = "do" then |
| 335 | declare |
| 336 | D : List_Mal_Type; |
| 337 | E : Mal_Handle; |
| 338 | begin |
| 339 | |
| 340 | if Debug then |
| 341 | Ada.Text_IO.Put_Line ("Do-ing " & To_String (Rest_List)); |
| 342 | end if; |
| 343 | |
| 344 | if Is_Null (Rest_List) then |
| 345 | return Rest_Params; |
| 346 | end if; |
| 347 | |
| 348 | -- Loop processes Evals all but last entry |
| 349 | D := Rest_List; |
| 350 | loop |
| 351 | E := Car (D); |
| 352 | D := Deref_List (Cdr (D)).all; |
| 353 | exit when Is_Null (D); |
| 354 | E := Eval (E, Env); |
| 355 | end loop; |
| 356 | |
| 357 | Param := E; |
| 358 | goto Tail_Call_Opt; |
| 359 | |
| 360 | end; |
| 361 | elsif Deref (First_Param).Sym_Type = Sym and then |
| 362 | Deref_Sym (First_Param).Get_Sym = "if" then |
| 363 | declare |
| 364 | Args : List_Mal_Type := Rest_List; |
| 365 | |
| 366 | Cond, True_Part, False_Part : Mal_Handle; |
| 367 | Cond_Bool : Boolean; |
| 368 | pragma Assert (Length (Args) = 2 or Length (Args) = 3, |
| 369 | "If_Processing: not 2 or 3 parameters"); |
| 370 | L : List_Mal_Type; |
| 371 | begin |
| 372 | |
| 373 | Cond := Eval (Car (Args), Env); |
| 374 | |
| 375 | Cond_Bool := Eval_As_Boolean (Cond); |
| 376 | |
| 377 | if Cond_Bool then |
| 378 | L := Deref_List (Cdr (Args)).all; |
| 379 | |
| 380 | Param := Car (L); |
| 381 | goto Tail_Call_Opt; |
| 382 | -- was: return Eval (Car (L), Env); |
| 383 | else |
| 384 | if Length (Args) = 3 then |
| 385 | L := Deref_List (Cdr (Args)).all; |
| 386 | L := Deref_List (Cdr (L)).all; |
| 387 | |
| 388 | Param := Car (L); |
| 389 | goto Tail_Call_Opt; |
| 390 | -- was: return Eval (Car (L), Env); |
| 391 | else |
| 392 | return New_Nil_Mal_Type; |
| 393 | end if; |
| 394 | end if; |
| 395 | end; |
| 396 | |
| 397 | elsif Deref (First_Param).Sym_Type = Sym and then |
| 398 | Deref_Sym (First_Param).Get_Sym = "fn*" then |
| 399 | |
| 400 | return New_Lambda_Mal_Type |
| 401 | (Params => Car (Rest_List), |
| 402 | Expr => Nth (Rest_List, 1), |
| 403 | Env => Env); |
| 404 | |
| 405 | elsif Deref (First_Param).Sym_Type = Sym and then |
| 406 | Deref_Sym (First_Param).Get_Sym = "quote" then |
| 407 | |
| 408 | return Car (Rest_List); |
| 409 | |
| 410 | elsif Deref (First_Param).Sym_Type = Sym and then |
| 411 | Deref_Sym (First_Param).Get_Sym = "quasiquoteexpand" then |
| 412 | |
| 413 | return Quasi_Quote_Processing (Car (Rest_List)); |
| 414 | |
| 415 | elsif Deref (First_Param).Sym_Type = Sym and then |
| 416 | Deref_Sym (First_Param).Get_Sym = "quasiquote" then |
| 417 | |
| 418 | Param := Quasi_Quote_Processing (Car (Rest_List)); |
| 419 | goto Tail_Call_Opt; |
| 420 | |
| 421 | elsif Deref (First_Param).Sym_Type = Sym and then |
| 422 | Deref_Sym (First_Param).Get_Sym = "try*" then |
| 423 | |
| 424 | if Length (Rest_List) = 1 then |
| 425 | return Eval (Car (Rest_List), Env); |
| 426 | end if; |
| 427 | declare |
| 428 | Res : Mal_Handle; |
| 429 | begin |
| 430 | return Eval (Car (Rest_List), Env); |
| 431 | exception |
| 432 | when Mal_Exception => |
| 433 | Res := Catch_Processing |
| 434 | (Cdr (Rest_List), |
| 435 | Types.Mal_Exception_Value, |
| 436 | Env); |
| 437 | Types.Mal_Exception_Value := |
| 438 | Smart_Pointers.Null_Smart_Pointer; |
| 439 | return Res; |
| 440 | when E : others => |
| 441 | return Catch_Processing |
| 442 | (Cdr (Rest_List), |
| 443 | New_String_Mal_Type |
| 444 | (Ada.Exceptions.Exception_Message (E)), |
| 445 | Env); |
| 446 | end; |
| 447 | |
| 448 | else |
| 449 | |
| 450 | -- The APPLY section. |
| 451 | declare |
| 452 | Evaled_H : Mal_Handle; |
| 453 | begin |
| 454 | Evaled_H := Eval_Ast (Param, Env); |
| 455 | |
| 456 | Param_List := Deref_List (Evaled_H).all; |
| 457 | |
| 458 | First_Param := Car (Param_List); |
| 459 | Rest_Params := Cdr (Param_List); |
| 460 | Rest_List := Deref_List (Rest_Params).all; |
| 461 | |
| 462 | if Deref (First_Param).Sym_Type = Func then |
| 463 | return Call_Func (Deref_Func (First_Param).all, Rest_Params); |
| 464 | elsif Deref (First_Param).Sym_Type = Lambda then |
| 465 | declare |
| 466 | |
| 467 | L : Lambda_Mal_Type; |
| 468 | E : Envs.Env_Handle; |
| 469 | Param_Names : List_Mal_Type; |
| 470 | Res : Mal_Handle; |
| 471 | |
| 472 | begin |
| 473 | |
| 474 | L := Deref_Lambda (First_Param).all; |
| 475 | E := Envs.New_Env (L.Get_Env); |
| 476 | |
| 477 | Param_Names := Deref_List (L.Get_Params).all; |
| 478 | |
| 479 | if Envs.Bind (E, Param_Names, Deref_List (Rest_Params).all) then |
| 480 | |
| 481 | Param := L.Get_Expr; |
| 482 | Env := E; |
| 483 | goto Tail_Call_Opt; |
| 484 | -- was: return Eval (L.Get_Expr, E); |
| 485 | |
| 486 | else |
| 487 | |
| 488 | raise Runtime_Exception with "Bind failed in Apply"; |
| 489 | |
| 490 | end if; |
| 491 | |
| 492 | end; |
| 493 | |
| 494 | else -- neither a Lambda or a Func |
| 495 | raise Runtime_Exception with "Deref called on non-Func/Lambda"; |
| 496 | end if; |
| 497 | |
| 498 | end; |
| 499 | |
| 500 | end if; |
| 501 | |
| 502 | else -- not a List_List |
| 503 | |
| 504 | return Eval_Ast (Param, Env); |
| 505 | |
| 506 | end if; |
| 507 | |
| 508 | end Eval; |
| 509 | |
| 510 | |
| 511 | function Print (Param : Types.Mal_Handle) return String is |
| 512 | begin |
| 513 | return Printer.Pr_Str (Param); |
| 514 | end Print; |
| 515 | |
| 516 | function Rep (Param : String; Env : Envs.Env_Handle) return String is |
| 517 | AST, Evaluated_AST : Types.Mal_Handle; |
| 518 | begin |
| 519 | |
| 520 | AST := Read (Param); |
| 521 | |
| 522 | if Types.Is_Null (AST) then |
| 523 | return ""; |
| 524 | else |
| 525 | Evaluated_AST := Eval (AST, Env); |
| 526 | return Print (Evaluated_AST); |
| 527 | end if; |
| 528 | |
| 529 | end Rep; |
| 530 | |
| 531 | |
| 532 | Repl_Env : Envs.Env_Handle; |
| 533 | |
| 534 | |
| 535 | -- These two ops use Repl_Env directly. |
| 536 | |
| 537 | |
| 538 | procedure RE (Str : Mal_String) is |
| 539 | Discarded : Mal_Handle; |
| 540 | begin |
| 541 | Discarded := Eval (Read (Str), Repl_Env); |
| 542 | end RE; |
| 543 | |
| 544 | |
| 545 | function Do_Eval (Rest_Handle : Mal_Handle) |
| 546 | return Types.Mal_Handle is |
| 547 | First_Param : Mal_Handle; |
| 548 | Rest_List : Types.List_Mal_Type; |
| 549 | begin |
| 550 | Rest_List := Deref_List (Rest_Handle).all; |
| 551 | First_Param := Car (Rest_List); |
| 552 | return Eval_Callback.Eval.all (First_Param, Repl_Env); |
| 553 | end Do_Eval; |
| 554 | |
| 555 | |
| 556 | Cmd_Args, File_Param : Natural; |
| 557 | Command_Args : Types.Mal_Handle; |
| 558 | Command_List : Types.List_Ptr; |
| 559 | File_Processed : Boolean := False; |
| 560 | |
| 561 | begin |
| 562 | |
| 563 | -- Save a function pointer back to the Eval function. |
| 564 | -- Can't use 'Access here because of Ada rules but 'Unrestricted_Access is OK |
| 565 | -- as we know Eval will be in scope for the lifetime of the program. |
| 566 | Eval_Callback.Eval := Eval'Unrestricted_Access; |
| 567 | |
| 568 | Repl_Env := Envs.New_Env; |
| 569 | |
| 570 | -- Core init also creates the first environment. |
| 571 | -- This is needed for the def!'s below. |
| 572 | Core.Init (Repl_Env); |
| 573 | |
| 574 | -- Register the eval command. This needs to be done here rather than Core.Init |
| 575 | -- as it requires direct access to Repl_Env. |
| 576 | Envs.Set (Repl_Env, "eval", New_Func_Mal_Type ("eval", Do_Eval'Unrestricted_Access)); |
| 577 | |
| 578 | RE ("(def! not (fn* (a) (if a false true)))"); |
| 579 | RE ("(def! load-file (fn* (f) (eval (read-string (str ""(do "" (slurp f) ""\nnil)"")))))"); |
| 580 | RE ("(defmacro! cond (fn* (& xs) (if (> (count xs) 0) (list 'if (first xs) (if (> (count xs) 1) (nth xs 1) (throw ""odd number of forms to cond"")) (cons 'cond (rest (rest xs)))))))"); |
| 581 | |
| 582 | -- Command line processing. |
| 583 | |
| 584 | Cmd_Args := 0; |
| 585 | Command_Args := Types.New_List_Mal_Type (Types.List_List); |
| 586 | Command_List := Types.Deref_List (Command_Args); |
| 587 | |
| 588 | while Ada.Command_Line.Argument_Count > Cmd_Args loop |
| 589 | |
| 590 | Cmd_Args := Cmd_Args + 1; |
| 591 | if Ada.Command_Line.Argument (Cmd_Args) = "-d" then |
| 592 | Debug := True; |
| 593 | elsif Ada.Command_Line.Argument (Cmd_Args) = "-e" then |
| 594 | Envs.Debug := True; |
| 595 | elsif not File_Processed then |
| 596 | File_Param := Cmd_Args; |
| 597 | File_Processed := True; |
| 598 | else |
| 599 | Command_List.Append |
| 600 | (Types.New_String_Mal_Type (Ada.Command_Line.Argument (Cmd_Args))); |
| 601 | end if; |
| 602 | |
| 603 | end loop; |
| 604 | |
| 605 | Envs.Set (Repl_Env, "*ARGV*", Command_Args); |
| 606 | |
| 607 | if File_Processed then |
| 608 | RE ("(load-file """ & Ada.Command_Line.Argument (File_Param) & """)"); |
| 609 | else |
| 610 | loop |
| 611 | begin |
| 612 | Ada.Text_IO.Put ("user> "); |
| 613 | exit when Ada.Text_IO.End_Of_File; |
| 614 | Ada.Text_IO.Put_Line (Rep (Ada.Text_IO.Get_Line, Repl_Env)); |
| 615 | exception |
| 616 | when E : others => |
| 617 | Ada.Text_IO.Put_Line |
| 618 | (Ada.Text_IO.Standard_Error, |
| 619 | "Error: " & Ada.Exceptions.Exception_Information (E)); |
| 620 | if Types.Mal_Exception_Value /= Smart_Pointers.Null_Smart_Pointer then |
| 621 | Ada.Text_IO.Put_Line |
| 622 | (Ada.Text_IO.Standard_Error, |
| 623 | Printer.Pr_Str (Types.Mal_Exception_Value)); |
| 624 | Types.Mal_Exception_Value := Smart_Pointers.Null_Smart_Pointer; |
| 625 | end if; |
| 626 | end; |
| 627 | end loop; |
| 628 | end if; |
| 629 | end Step9_Try; |