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 /* ECMA-262 3rd Edition    15.11.4.4 */
  32 static HRESULT Error_toString(script_ctx_t *ctx, vdisp_t *vthis, WORD flags,
  33         unsigned argc, jsval_t *argv, jsval_t *r)
  34 {
  35     jsdisp_t *jsthis;
  36     jsstr_t *name = NULL, *msg = NULL, *ret = NULL;
  37     jsval_t v;
  38     HRESULT hres;
  39
  40     TRACE("\n");
  41
  42     jsthis = get_jsdisp(vthis);
  43     if(!jsthis || ctx->version < 2) {
  44         if(r) {
  45             jsstr_t *str;
  46
  47             str = jsstr_alloc(L"[object Error]");
  48             if(!str)
  49                 return E_OUTOFMEMORY;
  50             *r = jsval_string(str);
  51         }
  52         return S_OK;
  53     }
  54
  55     hres = jsdisp_propget_name(jsthis, L"name", &v);
  56     if(FAILED(hres))
  57         return hres;
  58
  59     if(!is_undefined(v)) {
  60         hres = to_string(ctx, v, &name);
  61         jsval_release(v);
  62         if(FAILED(hres))
  63             return hres;
  64     }
  65
  66     hres = jsdisp_propget_name(jsthis, L"message", &v);
  67     if(SUCCEEDED(hres)) {
  68         if(!is_undefined(v)) {
  69             hres = to_string(ctx, v, &msg);
  70             jsval_release(v);
  71         }
  72     }
  73
  74     if(SUCCEEDED(hres)) {
  75         unsigned name_len = name ? jsstr_length(name) : 0;
  76         unsigned msg_len = msg ? jsstr_length(msg) : 0;
  77
  78         if(name_len && msg_len) {
  79             WCHAR *ptr;
  80
  81             ret = jsstr_alloc_buf(name_len + msg_len + 2, &ptr);
  82             if(ret) {
  83                 jsstr_flush(name, ptr);
  84                 ptr[name_len] = ':';
  85                 ptr[name_len+1] = ' ';
  86                 jsstr_flush(msg, ptr+name_len+2);
  87             }else {
  88                 hres = E_OUTOFMEMORY;
  89             }
  90         }else if(name_len) {
  91             ret = name;
  92             name = NULL;
  93         }else if(msg_len) {
  94             ret = msg;
  95             msg = NULL;
  96         }else {
  97             ret = jsstr_alloc(L"[object Error]");
  98         }
  99     }
 100
 101     if(msg)
 102         jsstr_release(msg);
 103     if(name)
 104         jsstr_release(name);
 105     if(FAILED(hres))
 106         return hres;
 107     if(!ret)
 108         return E_OUTOFMEMORY;
 109
 110     if(r)
 111         *r = jsval_string(ret);
 112     else
 113         jsstr_release(ret);
 114     return S_OK;
 115 }
 116
 117 static HRESULT Error_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 118         unsigned argc, jsval_t *argv, jsval_t *r)
 119 {
 120     TRACE("\n");
 121
 122     switch(flags) {
 123     case INVOKE_FUNC:
 124         return JS_E_FUNCTION_EXPECTED;
 125     default:
 126         FIXME("unimplemented flags %x\n", flags);
 127         return E_NOTIMPL;
 128     }
 129
 130     return S_OK;
 131 }
 132
 133 static const builtin_prop_t Error_props[] = {
 134     {L"toString",               Error_toString,                     PROPF_METHOD}
 135 };
 136
 137 static const builtin_info_t Error_info = {
 138     JSCLASS_ERROR,
 139     {NULL, Error_value, 0},
 140     ARRAY_SIZE(Error_props),
 141     Error_props,
 142     NULL,
 143     NULL
 144 };
 145
 146 static const builtin_info_t ErrorInst_info = {
 147     JSCLASS_ERROR,
 148     {NULL, Error_value, 0},
 149     0,
 150     NULL,
 151     NULL,
 152     NULL
 153 };
 154
 155 static HRESULT alloc_error(script_ctx_t *ctx, jsdisp_t *prototype,
 156         jsdisp_t *constr, jsdisp_t **ret)
 157 {
 158     jsdisp_t *err;
 159     HRESULT hres;
 160
 161     err = heap_alloc_zero(sizeof(*err));
 162     if(!err)
 163         return E_OUTOFMEMORY;
 164
 165     if(prototype)
 166         hres = init_dispex(err, ctx, &Error_info, prototype);
 167     else
 168         hres = init_dispex_from_constr(err, ctx, &ErrorInst_info,
 169             constr ? constr : ctx->error_constr);
 170     if(FAILED(hres)) {
 171         heap_free(err);
 172         return hres;
 173     }
 174
 175     *ret = err;
 176     return S_OK;
 177 }
 178
 179 static HRESULT create_error(script_ctx_t *ctx, jsdisp_t *constr,
 180         UINT number, jsstr_t *msg, jsdisp_t **ret)
 181 {
 182     jsdisp_t *err;
 183     HRESULT hres;
 184
 185     hres = alloc_error(ctx, NULL, constr, &err);
 186     if(FAILED(hres))
 187         return hres;
 188
 189     hres = jsdisp_define_data_property(err, L"number", PROPF_WRITABLE | PROPF_CONFIGURABLE,
 190                                        jsval_number((INT)number));
 191     if(FAILED(hres)) {
 192         jsdisp_release(err);
 193         return hres;
 194     }
 195
 196     hres = jsdisp_define_data_property(err, L"message",
 197                                        PROPF_WRITABLE | PROPF_ENUMERABLE | PROPF_CONFIGURABLE,
 198                                        jsval_string(msg));
 199     if(SUCCEEDED(hres))
 200         hres = jsdisp_define_data_property(err, L"description", PROPF_WRITABLE | PROPF_CONFIGURABLE,
 201                                            jsval_string(msg));
 202     if(FAILED(hres)) {
 203         jsdisp_release(err);
 204         return hres;
 205     }
 206
 207     *ret = err;
 208     return S_OK;
 209 }
 210
 211 static HRESULT error_constr(script_ctx_t *ctx, WORD flags, unsigned argc, jsval_t *argv,
 212         jsval_t *r, jsdisp_t *constr) {
 213     jsdisp_t *err;
 214     UINT num = 0;
 215     jsstr_t *msg = NULL;
 216     HRESULT hres;
 217
 218     if(argc) {
 219         double n;
 220
 221         hres = to_number(ctx, argv[0], &n);
 222         if(FAILED(hres)) /* FIXME: really? */
 223             n = NAN;
 224         if(isnan(n))
 225             hres = to_string(ctx, argv[0], &msg);
 226         if(FAILED(hres))
 227             return hres;
 228         num = n;
 229     }
 230
 231     if(!msg) {
 232         if(argc > 1) {
 233             hres = to_string(ctx, argv[1], &msg);
 234             if(FAILED(hres))
 235                 return hres;
 236         }else {
 237             msg = jsstr_empty();
 238         }
 239     }
 240
 241     switch(flags) {
 242     case INVOKE_FUNC:
 243     case DISPATCH_CONSTRUCT:
 244         hres = create_error(ctx, constr, num, msg, &err);
 245         jsstr_release(msg);
 246         if(FAILED(hres))
 247             return hres;
 248
 249         if(r)
 250             *r = jsval_obj(err);
 251         else
 252             jsdisp_release(err);
 253         return S_OK;
 254
 255     default:
 256         if(msg)
 257             jsstr_release(msg);
 258         FIXME("unimplemented flags %x\n", flags);
 259         return E_NOTIMPL;
 260     }
 261 }
 262
 263 static HRESULT ErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 264         unsigned argc, jsval_t *argv, jsval_t *r)
 265 {
 266     TRACE("\n");
 267     return error_constr(ctx, flags, argc, argv, r, ctx->error_constr);
 268 }
 269
 270 static HRESULT EvalErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 271         unsigned argc, jsval_t *argv, jsval_t *r)
 272 {
 273     TRACE("\n");
 274     return error_constr(ctx, flags, argc, argv, r, ctx->eval_error_constr);
 275 }
 276
 277 static HRESULT RangeErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 278         unsigned argc, jsval_t *argv, jsval_t *r)
 279 {
 280     TRACE("\n");
 281     return error_constr(ctx, flags, argc, argv, r, ctx->range_error_constr);
 282 }
 283
 284 static HRESULT ReferenceErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 285         unsigned argc, jsval_t *argv, jsval_t *r)
 286 {
 287     TRACE("\n");
 288     return error_constr(ctx, flags, argc, argv, r, ctx->reference_error_constr);
 289 }
 290
 291 static HRESULT RegExpErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 292         unsigned argc, jsval_t *argv, jsval_t *r)
 293 {
 294     TRACE("\n");
 295     return error_constr(ctx, flags, argc, argv, r, ctx->regexp_error_constr);
 296 }
 297
 298 static HRESULT SyntaxErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 299         unsigned argc, jsval_t *argv, jsval_t *r)
 300 {
 301     TRACE("\n");
 302     return error_constr(ctx, flags, argc, argv, r, ctx->syntax_error_constr);
 303 }
 304
 305 static HRESULT TypeErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 306         unsigned argc, jsval_t *argv, jsval_t *r)
 307 {
 308     TRACE("\n");
 309     return error_constr(ctx, flags, argc, argv, r, ctx->type_error_constr);
 310 }
 311
 312 static HRESULT URIErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 313         unsigned argc, jsval_t *argv, jsval_t *r)
 314 {
 315     TRACE("\n");
 316     return error_constr(ctx, flags, argc, argv, r, ctx->uri_error_constr);
 317 }
 318
 319 HRESULT init_error_constr(script_ctx_t *ctx, jsdisp_t *object_prototype)
 320 {
 321     static const WCHAR *names[] = {L"Error", L"EvalError", L"RangeError",
 322         L"ReferenceError", L"RegExpError", L"SyntaxError", L"TypeError", L"URIError"};
 323     jsdisp_t **constr_addr[] = {&ctx->error_constr, &ctx->eval_error_constr,
 324         &ctx->range_error_constr, &ctx->reference_error_constr, &ctx->regexp_error_constr,
 325         &ctx->syntax_error_constr, &ctx->type_error_constr,
 326         &ctx->uri_error_constr};
 327     static builtin_invoke_t constr_val[] = {ErrorConstr_value, EvalErrorConstr_value,
 328         RangeErrorConstr_value, ReferenceErrorConstr_value, RegExpErrorConstr_value,
 329         SyntaxErrorConstr_value, TypeErrorConstr_value, URIErrorConstr_value};
 330
 331     jsdisp_t *err;
 332     unsigned int i;
 333     jsstr_t *str;
 334     HRESULT hres;
 335
 336     for(i=0; i < ARRAY_SIZE(names); i++) {
 337         hres = alloc_error(ctx, i==0 ? object_prototype : NULL, NULL, &err);
 338         if(FAILED(hres))
 339             return hres;
 340
 341         str = jsstr_alloc(names[i]);
 342         if(!str) {
 343             jsdisp_release(err);
 344             return E_OUTOFMEMORY;
 345         }
 346
 347         hres = jsdisp_define_data_property(err, L"name", PROPF_WRITABLE | PROPF_CONFIGURABLE,
 348                                            jsval_string(str));
 349         jsstr_release(str);
 350         if(SUCCEEDED(hres))
 351             hres = create_builtin_constructor(ctx, constr_val[i], names[i], NULL,
 352                     PROPF_CONSTR|1, err, constr_addr[i]);
 353
 354         jsdisp_release(err);
 355         if(FAILED(hres))
 356             return hres;
 357     }
 358
 359     return S_OK;
 360 }
 361
 362 static jsstr_t *format_error_message(HRESULT error, const WCHAR *arg)
 363 {
 364     size_t len, arg_len = 0;
 365     const WCHAR *res, *pos;
 366     WCHAR *buf, *p;
 367     jsstr_t *r;
 368
 369     if(!is_jscript_error(error))
 370         return jsstr_empty();
 371
 372     len = LoadStringW(jscript_hinstance, HRESULT_CODE(error), (WCHAR*)&res, 0);
 373
 374     pos = wmemchr(res, '|', len);
 375     if(pos && arg)
 376         arg_len = lstrlenW(arg);
 377     r = jsstr_alloc_buf(len + arg_len - (pos ? 1 : 0), &buf);
 378     if(!r)
 379         return jsstr_empty();
 380
 381     p = buf;
 382     if(pos > res) {
 383         memcpy(p, res, (pos - res) * sizeof(WCHAR));
 384         p += pos - res;
 385     }
 386     pos = pos ? pos + 1 : res;
 387     if(arg_len) {
 388         memcpy(p, arg, arg_len * sizeof(WCHAR));
 389         p += arg_len;
 390     }
 391     if(pos != res + len)
 392         memcpy(p, pos, (res + len - pos) * sizeof(WCHAR));
 393     return r;
 394 }
 395
 396 HRESULT throw_error(script_ctx_t *ctx, HRESULT error, const WCHAR *str)
 397 {
 398     jsexcept_t *ei = ctx->ei;
 399     TRACE("%08x\n", error);
 400     reset_ei(ei);
 401     ei->error = error;
 402     if(str)
 403         ei->message = format_error_message(error, str);
 404     return DISP_E_EXCEPTION;
 405 }
 406
 407 void set_error_location(jsexcept_t *ei, bytecode_t *code, unsigned loc, unsigned source_id, jsstr_t *line)
 408 {
 409     if(is_jscript_error(ei->error)) {
 410         if(!ei->source) {
 411             const WCHAR *res;
 412             size_t len;
 413
 414             len = LoadStringW(jscript_hinstance, source_id, (WCHAR*)&res, 0);
 415             ei->source = jsstr_alloc_len(res, len);
 416         }
 417         if(!ei->message)
 418             ei->message = format_error_message(ei->error, NULL);
 419     }
 420
 421     TRACE("source %s in %s\n", debugstr_w(code->source + loc), debugstr_w(code->source));
 422
 423     ei->code = bytecode_addref(code);
 424     ei->loc = loc;
 425     if(line)
 426         ei->line = jsstr_addref(line);
 427 }
 428
 429 jsdisp_t *create_builtin_error(script_ctx_t *ctx)
 430 {
 431     jsdisp_t *constr = ctx->error_constr, *r;
 432     jsexcept_t *ei = ctx->ei;
 433     HRESULT hres;
 434
 435     assert(FAILED(ei->error) && ei->error != DISP_E_EXCEPTION);
 436
 437     if(is_jscript_error(ei->error)) {
 438         switch(ei->error) {
 439         case JS_E_SYNTAX:
 440         case JS_E_MISSING_SEMICOLON:
 441         case JS_E_MISSING_LBRACKET:
 442         case JS_E_MISSING_RBRACKET:
 443         case JS_E_EXPECTED_IDENTIFIER:
 444         case JS_E_EXPECTED_ASSIGN:
 445         case JS_E_INVALID_CHAR:
 446         case JS_E_UNTERMINATED_STRING:
 447         case JS_E_MISPLACED_RETURN:
 448         case JS_E_INVALID_BREAK:
 449         case JS_E_INVALID_CONTINUE:
 450         case JS_E_LABEL_REDEFINED:
 451         case JS_E_LABEL_NOT_FOUND:
 452         case JS_E_EXPECTED_CCEND:
 453         case JS_E_DISABLED_CC:
 454         case JS_E_EXPECTED_AT:
 455             constr = ctx->syntax_error_constr;
 456             break;
 457
 458         case JS_E_TO_PRIMITIVE:
 459         case JS_E_INVALIDARG:
 460         case JS_E_OBJECT_REQUIRED:
 461         case JS_E_INVALID_PROPERTY:
 462         case JS_E_INVALID_ACTION:
 463         case JS_E_MISSING_ARG:
 464         case JS_E_FUNCTION_EXPECTED:
 465         case JS_E_DATE_EXPECTED:
 466         case JS_E_NUMBER_EXPECTED:
 467         case JS_E_OBJECT_EXPECTED:
 468         case JS_E_UNDEFINED_VARIABLE:
 469         case JS_E_BOOLEAN_EXPECTED:
 470         case JS_E_VBARRAY_EXPECTED:
 471         case JS_E_INVALID_DELETE:
 472         case JS_E_JSCRIPT_EXPECTED:
 473         case JS_E_ENUMERATOR_EXPECTED:
 474         case JS_E_REGEXP_EXPECTED:
 475         case JS_E_ARRAY_EXPECTED:
 476         case JS_E_NONCONFIGURABLE_REDEFINED:
 477         case JS_E_NONWRITABLE_MODIFIED:
 478         case JS_E_PROP_DESC_MISMATCH:
 479         case JS_E_INVALID_WRITABLE_PROP_DESC:
 480             constr = ctx->type_error_constr;
 481             break;
 482
 483         case JS_E_SUBSCRIPT_OUT_OF_RANGE:
 484         case JS_E_FRACTION_DIGITS_OUT_OF_RANGE:
 485         case JS_E_PRECISION_OUT_OF_RANGE:
 486         case JS_E_INVALID_LENGTH:
 487             constr = ctx->range_error_constr;
 488             break;
 489
 490         case JS_E_ILLEGAL_ASSIGN:
 491             constr = ctx->reference_error_constr;
 492             break;
 493
 494         case JS_E_REGEXP_SYNTAX:
 495             constr = ctx->regexp_error_constr;
 496             break;
 497
 498         case JS_E_INVALID_URI_CODING:
 499         case JS_E_INVALID_URI_CHAR:
 500             constr = ctx->uri_error_constr;
 501             break;
 502         }
 503     }
 504
 505     hres = create_error(ctx, constr, ei->error, ei->message ? ei->message : jsstr_empty(), &r);
 506     return SUCCEEDED(hres) ? r : NULL;
 507 }