dlls/jscript/error.c

   1 /*
   2  * Copyright 2009 Piotr Caban
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19
  20 #include <math.h>
  21 #include <assert.h>
  22 #include <wchar.h>
  23
  24 #include "jscript.h"
  25 #include "engine.h"
  26
  27 #include "wine/debug.h"
  28
  29 WINE_DEFAULT_DEBUG_CHANNEL(jscript);
  30
  31 static const WCHAR descriptionW[] = {'d','e','s','c','r','i','p','t','i','o','n',0};
  32 static const WCHAR messageW[] = {'m','e','s','s','a','g','e',0};
  33 static const WCHAR nameW[] = {'n','a','m','e',0};
  34 static const WCHAR numberW[] = {'n','u','m','b','e','r',0};
  35 static const WCHAR toStringW[] = {'t','o','S','t','r','i','n','g',0};
  36
  37 /* ECMA-262 3rd Edition    15.11.4.4 */
  38 static HRESULT Error_toString(script_ctx_t *ctx, vdisp_t *vthis, WORD flags,
  39         unsigned argc, jsval_t *argv, jsval_t *r)
  40 {
  41     jsdisp_t *jsthis;
  42     jsstr_t *name = NULL, *msg = NULL, *ret = NULL;
  43     jsval_t v;
  44     HRESULT hres;
  45
  46     static const WCHAR object_errorW[] = {'[','o','b','j','e','c','t',' ','E','r','r','o','r',']',0};
  47
  48     TRACE("\n");
  49
  50     jsthis = get_jsdisp(vthis);
  51     if(!jsthis || ctx->version < 2) {
  52         if(r) {
  53             jsstr_t *str;
  54
  55             str = jsstr_alloc(object_errorW);
  56             if(!str)
  57                 return E_OUTOFMEMORY;
  58             *r = jsval_string(str);
  59         }
  60         return S_OK;
  61     }
  62
  63     hres = jsdisp_propget_name(jsthis, nameW, &v);
  64     if(FAILED(hres))
  65         return hres;
  66
  67     if(!is_undefined(v)) {
  68         hres = to_string(ctx, v, &name);
  69         jsval_release(v);
  70         if(FAILED(hres))
  71             return hres;
  72     }
  73
  74     hres = jsdisp_propget_name(jsthis, messageW, &v);
  75     if(SUCCEEDED(hres)) {
  76         if(!is_undefined(v)) {
  77             hres = to_string(ctx, v, &msg);
  78             jsval_release(v);
  79         }
  80     }
  81
  82     if(SUCCEEDED(hres)) {
  83         unsigned name_len = name ? jsstr_length(name) : 0;
  84         unsigned msg_len = msg ? jsstr_length(msg) : 0;
  85
  86         if(name_len && msg_len) {
  87             WCHAR *ptr;
  88
  89             ret = jsstr_alloc_buf(name_len + msg_len + 2, &ptr);
  90             if(ret) {
  91                 jsstr_flush(name, ptr);
  92                 ptr[name_len] = ':';
  93                 ptr[name_len+1] = ' ';
  94                 jsstr_flush(msg, ptr+name_len+2);
  95             }else {
  96                 hres = E_OUTOFMEMORY;
  97             }
  98         }else if(name_len) {
  99             ret = name;
 100             name = NULL;
 101         }else if(msg_len) {
 102             ret = msg;
 103             msg = NULL;
 104         }else {
 105             ret = jsstr_alloc(object_errorW);
 106         }
 107     }
 108
 109     if(msg)
 110         jsstr_release(msg);
 111     if(name)
 112         jsstr_release(name);
 113     if(FAILED(hres))
 114         return hres;
 115     if(!ret)
 116         return E_OUTOFMEMORY;
 117
 118     if(r)
 119         *r = jsval_string(ret);
 120     else
 121         jsstr_release(ret);
 122     return S_OK;
 123 }
 124
 125 static HRESULT Error_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 126         unsigned argc, jsval_t *argv, jsval_t *r)
 127 {
 128     TRACE("\n");
 129
 130     switch(flags) {
 131     case INVOKE_FUNC:
 132         return JS_E_FUNCTION_EXPECTED;
 133     default:
 134         FIXME("unimplemented flags %x\n", flags);
 135         return E_NOTIMPL;
 136     }
 137
 138     return S_OK;
 139 }
 140
 141 static const builtin_prop_t Error_props[] = {
 142     {toStringW,                 Error_toString,                     PROPF_METHOD}
 143 };
 144
 145 static const builtin_info_t Error_info = {
 146     JSCLASS_ERROR,
 147     {NULL, Error_value, 0},
 148     ARRAY_SIZE(Error_props),
 149     Error_props,
 150     NULL,
 151     NULL
 152 };
 153
 154 static const builtin_info_t ErrorInst_info = {
 155     JSCLASS_ERROR,
 156     {NULL, Error_value, 0},
 157     0,
 158     NULL,
 159     NULL,
 160     NULL
 161 };
 162
 163 static HRESULT alloc_error(script_ctx_t *ctx, jsdisp_t *prototype,
 164         jsdisp_t *constr, jsdisp_t **ret)
 165 {
 166     jsdisp_t *err;
 167     HRESULT hres;
 168
 169     err = heap_alloc_zero(sizeof(*err));
 170     if(!err)
 171         return E_OUTOFMEMORY;
 172
 173     if(prototype)
 174         hres = init_dispex(err, ctx, &Error_info, prototype);
 175     else
 176         hres = init_dispex_from_constr(err, ctx, &ErrorInst_info,
 177             constr ? constr : ctx->error_constr);
 178     if(FAILED(hres)) {
 179         heap_free(err);
 180         return hres;
 181     }
 182
 183     *ret = err;
 184     return S_OK;
 185 }
 186
 187 static HRESULT create_error(script_ctx_t *ctx, jsdisp_t *constr,
 188         UINT number, jsstr_t *msg, jsdisp_t **ret)
 189 {
 190     jsdisp_t *err;
 191     HRESULT hres;
 192
 193     hres = alloc_error(ctx, NULL, constr, &err);
 194     if(FAILED(hres))
 195         return hres;
 196
 197     hres = jsdisp_define_data_property(err, numberW, PROPF_WRITABLE | PROPF_CONFIGURABLE,
 198                                        jsval_number((INT)number));
 199     if(FAILED(hres)) {
 200         jsdisp_release(err);
 201         return hres;
 202     }
 203
 204     hres = jsdisp_define_data_property(err, messageW,
 205                                        PROPF_WRITABLE | PROPF_ENUMERABLE | PROPF_CONFIGURABLE,
 206                                        jsval_string(msg));
 207     if(SUCCEEDED(hres))
 208         hres = jsdisp_define_data_property(err, descriptionW, PROPF_WRITABLE | PROPF_CONFIGURABLE,
 209                                            jsval_string(msg));
 210     if(FAILED(hres)) {
 211         jsdisp_release(err);
 212         return hres;
 213     }
 214
 215     *ret = err;
 216     return S_OK;
 217 }
 218
 219 static HRESULT error_constr(script_ctx_t *ctx, WORD flags, unsigned argc, jsval_t *argv,
 220         jsval_t *r, jsdisp_t *constr) {
 221     jsdisp_t *err;
 222     UINT num = 0;
 223     jsstr_t *msg = NULL;
 224     HRESULT hres;
 225
 226     if(argc) {
 227         double n;
 228
 229         hres = to_number(ctx, argv[0], &n);
 230         if(FAILED(hres)) /* FIXME: really? */
 231             n = NAN;
 232         if(isnan(n))
 233             hres = to_string(ctx, argv[0], &msg);
 234         if(FAILED(hres))
 235             return hres;
 236         num = n;
 237     }
 238
 239     if(!msg) {
 240         if(argc > 1) {
 241             hres = to_string(ctx, argv[1], &msg);
 242             if(FAILED(hres))
 243                 return hres;
 244         }else {
 245             msg = jsstr_empty();
 246         }
 247     }
 248
 249     switch(flags) {
 250     case INVOKE_FUNC:
 251     case DISPATCH_CONSTRUCT:
 252         hres = create_error(ctx, constr, num, msg, &err);
 253         jsstr_release(msg);
 254         if(FAILED(hres))
 255             return hres;
 256
 257         if(r)
 258             *r = jsval_obj(err);
 259         else
 260             jsdisp_release(err);
 261         return S_OK;
 262
 263     default:
 264         if(msg)
 265             jsstr_release(msg);
 266         FIXME("unimplemented flags %x\n", flags);
 267         return E_NOTIMPL;
 268     }
 269 }
 270
 271 static HRESULT ErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 272         unsigned argc, jsval_t *argv, jsval_t *r)
 273 {
 274     TRACE("\n");
 275     return error_constr(ctx, flags, argc, argv, r, ctx->error_constr);
 276 }
 277
 278 static HRESULT EvalErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 279         unsigned argc, jsval_t *argv, jsval_t *r)
 280 {
 281     TRACE("\n");
 282     return error_constr(ctx, flags, argc, argv, r, ctx->eval_error_constr);
 283 }
 284
 285 static HRESULT RangeErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 286         unsigned argc, jsval_t *argv, jsval_t *r)
 287 {
 288     TRACE("\n");
 289     return error_constr(ctx, flags, argc, argv, r, ctx->range_error_constr);
 290 }
 291
 292 static HRESULT ReferenceErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 293         unsigned argc, jsval_t *argv, jsval_t *r)
 294 {
 295     TRACE("\n");
 296     return error_constr(ctx, flags, argc, argv, r, ctx->reference_error_constr);
 297 }
 298
 299 static HRESULT RegExpErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 300         unsigned argc, jsval_t *argv, jsval_t *r)
 301 {
 302     TRACE("\n");
 303     return error_constr(ctx, flags, argc, argv, r, ctx->regexp_error_constr);
 304 }
 305
 306 static HRESULT SyntaxErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 307         unsigned argc, jsval_t *argv, jsval_t *r)
 308 {
 309     TRACE("\n");
 310     return error_constr(ctx, flags, argc, argv, r, ctx->syntax_error_constr);
 311 }
 312
 313 static HRESULT TypeErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 314         unsigned argc, jsval_t *argv, jsval_t *r)
 315 {
 316     TRACE("\n");
 317     return error_constr(ctx, flags, argc, argv, r, ctx->type_error_constr);
 318 }
 319
 320 static HRESULT URIErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 321         unsigned argc, jsval_t *argv, jsval_t *r)
 322 {
 323     TRACE("\n");
 324     return error_constr(ctx, flags, argc, argv, r, ctx->uri_error_constr);
 325 }
 326
 327 HRESULT init_error_constr(script_ctx_t *ctx, jsdisp_t *object_prototype)
 328 {
 329     static const WCHAR ErrorW[] = {'E','r','r','o','r',0};
 330     static const WCHAR EvalErrorW[] = {'E','v','a','l','E','r','r','o','r',0};
 331     static const WCHAR RangeErrorW[] = {'R','a','n','g','e','E','r','r','o','r',0};
 332     static const WCHAR ReferenceErrorW[] = {'R','e','f','e','r','e','n','c','e','E','r','r','o','r',0};
 333     static const WCHAR RegExpErrorW[] = {'R','e','g','E','x','p','E','r','r','o','r',0};
 334     static const WCHAR SyntaxErrorW[] = {'S','y','n','t','a','x','E','r','r','o','r',0};
 335     static const WCHAR TypeErrorW[] = {'T','y','p','e','E','r','r','o','r',0};
 336     static const WCHAR URIErrorW[] = {'U','R','I','E','r','r','o','r',0};
 337     static const WCHAR *names[] = {ErrorW, EvalErrorW, RangeErrorW,
 338         ReferenceErrorW, RegExpErrorW, SyntaxErrorW, TypeErrorW, URIErrorW};
 339     jsdisp_t **constr_addr[] = {&ctx->error_constr, &ctx->eval_error_constr,
 340         &ctx->range_error_constr, &ctx->reference_error_constr, &ctx->regexp_error_constr,
 341         &ctx->syntax_error_constr, &ctx->type_error_constr,
 342         &ctx->uri_error_constr};
 343     static builtin_invoke_t constr_val[] = {ErrorConstr_value, EvalErrorConstr_value,
 344         RangeErrorConstr_value, ReferenceErrorConstr_value, RegExpErrorConstr_value,
 345         SyntaxErrorConstr_value, TypeErrorConstr_value, URIErrorConstr_value};
 346
 347     jsdisp_t *err;
 348     unsigned int i;
 349     jsstr_t *str;
 350     HRESULT hres;
 351
 352     for(i=0; i < ARRAY_SIZE(names); i++) {
 353         hres = alloc_error(ctx, i==0 ? object_prototype : NULL, NULL, &err);
 354         if(FAILED(hres))
 355             return hres;
 356
 357         str = jsstr_alloc(names[i]);
 358         if(!str) {
 359             jsdisp_release(err);
 360             return E_OUTOFMEMORY;
 361         }
 362
 363         hres = jsdisp_define_data_property(err, nameW, PROPF_WRITABLE | PROPF_CONFIGURABLE,
 364                                            jsval_string(str));
 365         jsstr_release(str);
 366         if(SUCCEEDED(hres))
 367             hres = create_builtin_constructor(ctx, constr_val[i], names[i], NULL,
 368                     PROPF_CONSTR|1, err, constr_addr[i]);
 369
 370         jsdisp_release(err);
 371         if(FAILED(hres))
 372             return hres;
 373     }
 374
 375     return S_OK;
 376 }
 377
 378 static jsstr_t *format_error_message(HRESULT error, const WCHAR *arg)
 379 {
 380     size_t len, arg_len = 0;
 381     const WCHAR *res, *pos;
 382     WCHAR *buf, *p;
 383     jsstr_t *r;
 384
 385     if(!is_jscript_error(error))
 386         return jsstr_empty();
 387
 388     len = LoadStringW(jscript_hinstance, HRESULT_CODE(error), (WCHAR*)&res, 0);
 389
 390     pos = wmemchr(res, '|', len);
 391     if(pos && arg)
 392         arg_len = lstrlenW(arg);
 393     r = jsstr_alloc_buf(len + arg_len - (pos ? 1 : 0), &buf);
 394     if(!r)
 395         return jsstr_empty();
 396
 397     p = buf;
 398     if(pos > res) {
 399         memcpy(p, res, (pos - res) * sizeof(WCHAR));
 400         p += pos - res;
 401     }
 402     pos = pos ? pos + 1 : res;
 403     if(arg_len) {
 404         memcpy(p, arg, arg_len * sizeof(WCHAR));
 405         p += arg_len;
 406     }
 407     if(pos != res + len)
 408         memcpy(p, pos, (res + len - pos) * sizeof(WCHAR));
 409     return r;
 410 }
 411
 412 HRESULT throw_error(script_ctx_t *ctx, HRESULT error, const WCHAR *str)
 413 {
 414     jsexcept_t *ei = ctx->ei;
 415     TRACE("%08x\n", error);
 416     reset_ei(ei);
 417     ei->error = error;
 418     if(str)
 419         ei->message = format_error_message(error, str);
 420     return DISP_E_EXCEPTION;
 421 }
 422
 423 void set_error_location(jsexcept_t *ei, bytecode_t *code, unsigned loc, unsigned source_id, jsstr_t *line)
 424 {
 425     if(is_jscript_error(ei->error)) {
 426         if(!ei->source) {
 427             const WCHAR *res;
 428             size_t len;
 429
 430             len = LoadStringW(jscript_hinstance, source_id, (WCHAR*)&res, 0);
 431             ei->source = jsstr_alloc_len(res, len);
 432         }
 433         if(!ei->message)
 434             ei->message = format_error_message(ei->error, NULL);
 435     }
 436
 437     TRACE("source %s in %s\n", debugstr_w(code->source + loc), debugstr_w(code->source));
 438
 439     ei->code = bytecode_addref(code);
 440     ei->loc = loc;
 441     if(line)
 442         ei->line = jsstr_addref(line);
 443 }
 444
 445 jsdisp_t *create_builtin_error(script_ctx_t *ctx)
 446 {
 447     jsdisp_t *constr = ctx->error_constr, *r;
 448     jsexcept_t *ei = ctx->ei;
 449     HRESULT hres;
 450
 451     assert(FAILED(ei->error) && ei->error != DISP_E_EXCEPTION);
 452
 453     if(is_jscript_error(ei->error)) {
 454         switch(ei->error) {
 455         case JS_E_SYNTAX:
 456         case JS_E_MISSING_SEMICOLON:
 457         case JS_E_MISSING_LBRACKET:
 458         case JS_E_MISSING_RBRACKET:
 459         case JS_E_EXPECTED_IDENTIFIER:
 460         case JS_E_EXPECTED_ASSIGN:
 461         case JS_E_INVALID_CHAR:
 462         case JS_E_UNTERMINATED_STRING:
 463         case JS_E_MISPLACED_RETURN:
 464         case JS_E_INVALID_BREAK:
 465         case JS_E_INVALID_CONTINUE:
 466         case JS_E_LABEL_REDEFINED:
 467         case JS_E_LABEL_NOT_FOUND:
 468         case JS_E_EXPECTED_CCEND:
 469         case JS_E_DISABLED_CC:
 470         case JS_E_EXPECTED_AT:
 471             constr = ctx->syntax_error_constr;
 472             break;
 473
 474         case JS_E_TO_PRIMITIVE:
 475         case JS_E_INVALIDARG:
 476         case JS_E_OBJECT_REQUIRED:
 477         case JS_E_INVALID_PROPERTY:
 478         case JS_E_INVALID_ACTION:
 479         case JS_E_MISSING_ARG:
 480         case JS_E_FUNCTION_EXPECTED:
 481         case JS_E_DATE_EXPECTED:
 482         case JS_E_NUMBER_EXPECTED:
 483         case JS_E_OBJECT_EXPECTED:
 484         case JS_E_UNDEFINED_VARIABLE:
 485         case JS_E_BOOLEAN_EXPECTED:
 486         case JS_E_VBARRAY_EXPECTED:
 487         case JS_E_INVALID_DELETE:
 488         case JS_E_JSCRIPT_EXPECTED:
 489         case JS_E_ENUMERATOR_EXPECTED:
 490         case JS_E_REGEXP_EXPECTED:
 491         case JS_E_ARRAY_EXPECTED:
 492         case JS_E_NONCONFIGURABLE_REDEFINED:
 493         case JS_E_NONWRITABLE_MODIFIED:
 494         case JS_E_PROP_DESC_MISMATCH:
 495         case JS_E_INVALID_WRITABLE_PROP_DESC:
 496             constr = ctx->type_error_constr;
 497             break;
 498
 499         case JS_E_SUBSCRIPT_OUT_OF_RANGE:
 500         case JS_E_FRACTION_DIGITS_OUT_OF_RANGE:
 501         case JS_E_PRECISION_OUT_OF_RANGE:
 502         case JS_E_INVALID_LENGTH:
 503             constr = ctx->range_error_constr;
 504             break;
 505
 506         case JS_E_ILLEGAL_ASSIGN:
 507             constr = ctx->reference_error_constr;
 508             break;
 509
 510         case JS_E_REGEXP_SYNTAX:
 511             constr = ctx->regexp_error_constr;
 512             break;
 513
 514         case JS_E_INVALID_URI_CODING:
 515         case JS_E_INVALID_URI_CHAR:
 516             constr = ctx->uri_error_constr;
 517             break;
 518         }
 519     }
 520
 521     hres = create_error(ctx, constr, ei->error, ei->message ? ei->message : jsstr_empty(), &r);
 522     return SUCCEEDED(hres) ? r : NULL;
 523 }