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 #include "config.h"
  20 #include "wine/port.h"
  21
  22 #include <math.h>
  23
  24 #include "jscript.h"
  25
  26 #include "wine/debug.h"
  27
  28 WINE_DEFAULT_DEBUG_CHANNEL(jscript);
  29
  30 static const WCHAR descriptionW[] = {'d','e','s','c','r','i','p','t','i','o','n',0};
  31 static const WCHAR messageW[] = {'m','e','s','s','a','g','e',0};
  32 static const WCHAR nameW[] = {'n','a','m','e',0};
  33 static const WCHAR numberW[] = {'n','u','m','b','e','r',0};
  34 static const WCHAR toStringW[] = {'t','o','S','t','r','i','n','g',0};
  35
  36 /* ECMA-262 3rd Edition    15.11.4.4 */
  37 static HRESULT Error_toString(script_ctx_t *ctx, vdisp_t *vthis, WORD flags,
  38         unsigned argc, jsval_t *argv, jsval_t *r)
  39 {
  40     jsdisp_t *jsthis;
  41     jsstr_t *name = NULL, *msg = NULL, *ret = NULL;
  42     jsval_t v;
  43     HRESULT hres;
  44
  45     static const WCHAR object_errorW[] = {'[','o','b','j','e','c','t',' ','E','r','r','o','r',']',0};
  46
  47     TRACE("\n");
  48
  49     jsthis = get_jsdisp(vthis);
  50     if(!jsthis || ctx->version < 2) {
  51         if(r) {
  52             jsstr_t *str;
  53
  54             str = jsstr_alloc(object_errorW);
  55             if(!str)
  56                 return E_OUTOFMEMORY;
  57             *r = jsval_string(str);
  58         }
  59         return S_OK;
  60     }
  61
  62     hres = jsdisp_propget_name(jsthis, nameW, &v);
  63     if(FAILED(hres))
  64         return hres;
  65
  66     if(!is_undefined(v)) {
  67         hres = to_string(ctx, v, &name);
  68         jsval_release(v);
  69         if(FAILED(hres))
  70             return hres;
  71     }
  72
  73     hres = jsdisp_propget_name(jsthis, messageW, &v);
  74     if(SUCCEEDED(hres)) {
  75         if(!is_undefined(v)) {
  76             hres = to_string(ctx, v, &msg);
  77             jsval_release(v);
  78         }
  79     }
  80
  81     if(SUCCEEDED(hres)) {
  82         unsigned name_len = name ? jsstr_length(name) : 0;
  83         unsigned msg_len = msg ? jsstr_length(msg) : 0;
  84
  85         if(name_len && msg_len) {
  86             WCHAR *ptr;
  87
  88             ret = jsstr_alloc_buf(name_len + msg_len + 2, &ptr);
  89             if(ret) {
  90                 jsstr_flush(name, ptr);
  91                 ptr[name_len] = ':';
  92                 ptr[name_len+1] = ' ';
  93                 jsstr_flush(msg, ptr+name_len+2);
  94             }else {
  95                 hres = E_OUTOFMEMORY;
  96             }
  97         }else if(name_len) {
  98             ret = name;
  99             name = NULL;
 100         }else if(msg_len) {
 101             ret = msg;
 102             msg = NULL;
 103         }else {
 104             ret = jsstr_alloc(object_errorW);
 105         }
 106     }
 107
 108     if(msg)
 109         jsstr_release(msg);
 110     if(name)
 111         jsstr_release(name);
 112     if(FAILED(hres))
 113         return hres;
 114     if(!ret)
 115         return E_OUTOFMEMORY;
 116
 117     if(r)
 118         *r = jsval_string(ret);
 119     else
 120         jsstr_release(ret);
 121     return S_OK;
 122 }
 123
 124 static HRESULT Error_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 125         unsigned argc, jsval_t *argv, jsval_t *r)
 126 {
 127     TRACE("\n");
 128
 129     switch(flags) {
 130     case INVOKE_FUNC:
 131         return throw_type_error(ctx, JS_E_FUNCTION_EXPECTED, NULL);
 132     default:
 133         FIXME("unimplemented flags %x\n", flags);
 134         return E_NOTIMPL;
 135     }
 136
 137     return S_OK;
 138 }
 139
 140 static const builtin_prop_t Error_props[] = {
 141     {toStringW,                 Error_toString,                     PROPF_METHOD}
 142 };
 143
 144 static const builtin_info_t Error_info = {
 145     JSCLASS_ERROR,
 146     {NULL, Error_value, 0},
 147     ARRAY_SIZE(Error_props),
 148     Error_props,
 149     NULL,
 150     NULL
 151 };
 152
 153 static const builtin_info_t ErrorInst_info = {
 154     JSCLASS_ERROR,
 155     {NULL, Error_value, 0},
 156     0,
 157     NULL,
 158     NULL,
 159     NULL
 160 };
 161
 162 static HRESULT alloc_error(script_ctx_t *ctx, jsdisp_t *prototype,
 163         jsdisp_t *constr, jsdisp_t **ret)
 164 {
 165     jsdisp_t *err;
 166     HRESULT hres;
 167
 168     err = heap_alloc_zero(sizeof(*err));
 169     if(!err)
 170         return E_OUTOFMEMORY;
 171
 172     if(prototype)
 173         hres = init_dispex(err, ctx, &Error_info, prototype);
 174     else
 175         hres = init_dispex_from_constr(err, ctx, &ErrorInst_info,
 176             constr ? constr : ctx->error_constr);
 177     if(FAILED(hres)) {
 178         heap_free(err);
 179         return hres;
 180     }
 181
 182     *ret = err;
 183     return S_OK;
 184 }
 185
 186 static HRESULT create_error(script_ctx_t *ctx, jsdisp_t *constr,
 187         UINT number, jsstr_t *msg, jsdisp_t **ret)
 188 {
 189     jsdisp_t *err;
 190     HRESULT hres;
 191
 192     hres = alloc_error(ctx, NULL, constr, &err);
 193     if(FAILED(hres))
 194         return hres;
 195
 196     hres = jsdisp_define_data_property(err, numberW, PROPF_WRITABLE | PROPF_CONFIGURABLE,
 197                                        jsval_number((INT)number));
 198     if(FAILED(hres)) {
 199         jsdisp_release(err);
 200         return hres;
 201     }
 202
 203     hres = jsdisp_define_data_property(err, messageW,
 204                                        PROPF_WRITABLE | PROPF_ENUMERABLE | PROPF_CONFIGURABLE,
 205                                        jsval_string(msg));
 206     if(SUCCEEDED(hres))
 207         hres = jsdisp_define_data_property(err, descriptionW, PROPF_WRITABLE | PROPF_CONFIGURABLE,
 208                                            jsval_string(msg));
 209     if(FAILED(hres)) {
 210         jsdisp_release(err);
 211         return hres;
 212     }
 213
 214     *ret = err;
 215     return S_OK;
 216 }
 217
 218 static HRESULT error_constr(script_ctx_t *ctx, WORD flags, unsigned argc, jsval_t *argv,
 219         jsval_t *r, jsdisp_t *constr) {
 220     jsdisp_t *err;
 221     UINT num = 0;
 222     jsstr_t *msg = NULL;
 223     HRESULT hres;
 224
 225     if(argc) {
 226         double n;
 227
 228         hres = to_number(ctx, argv[0], &n);
 229         if(FAILED(hres)) /* FIXME: really? */
 230             n = NAN;
 231         if(isnan(n))
 232             hres = to_string(ctx, argv[0], &msg);
 233         if(FAILED(hres))
 234             return hres;
 235         num = n;
 236     }
 237
 238     if(!msg) {
 239         if(argc > 1) {
 240             hres = to_string(ctx, argv[1], &msg);
 241             if(FAILED(hres))
 242                 return hres;
 243         }else {
 244             msg = jsstr_empty();
 245         }
 246     }
 247
 248     switch(flags) {
 249     case INVOKE_FUNC:
 250     case DISPATCH_CONSTRUCT:
 251         hres = create_error(ctx, constr, num, msg, &err);
 252         jsstr_release(msg);
 253         if(FAILED(hres))
 254             return hres;
 255
 256         if(r)
 257             *r = jsval_obj(err);
 258         else
 259             jsdisp_release(err);
 260         return S_OK;
 261
 262     default:
 263         if(msg)
 264             jsstr_release(msg);
 265         FIXME("unimplemented flags %x\n", flags);
 266         return E_NOTIMPL;
 267     }
 268 }
 269
 270 static HRESULT ErrorConstr_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->error_constr);
 275 }
 276
 277 static HRESULT EvalErrorConstr_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->eval_error_constr);
 282 }
 283
 284 static HRESULT RangeErrorConstr_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->range_error_constr);
 289 }
 290
 291 static HRESULT ReferenceErrorConstr_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->reference_error_constr);
 296 }
 297
 298 static HRESULT RegExpErrorConstr_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->regexp_error_constr);
 303 }
 304
 305 static HRESULT SyntaxErrorConstr_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->syntax_error_constr);
 310 }
 311
 312 static HRESULT TypeErrorConstr_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->type_error_constr);
 317 }
 318
 319 static HRESULT URIErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 320         unsigned argc, jsval_t *argv, jsval_t *r)
 321 {
 322     TRACE("\n");
 323     return error_constr(ctx, flags, argc, argv, r, ctx->uri_error_constr);
 324 }
 325
 326 HRESULT init_error_constr(script_ctx_t *ctx, jsdisp_t *object_prototype)
 327 {
 328     static const WCHAR ErrorW[] = {'E','r','r','o','r',0};
 329     static const WCHAR EvalErrorW[] = {'E','v','a','l','E','r','r','o','r',0};
 330     static const WCHAR RangeErrorW[] = {'R','a','n','g','e','E','r','r','o','r',0};
 331     static const WCHAR ReferenceErrorW[] = {'R','e','f','e','r','e','n','c','e','E','r','r','o','r',0};
 332     static const WCHAR RegExpErrorW[] = {'R','e','g','E','x','p','E','r','r','o','r',0};
 333     static const WCHAR SyntaxErrorW[] = {'S','y','n','t','a','x','E','r','r','o','r',0};
 334     static const WCHAR TypeErrorW[] = {'T','y','p','e','E','r','r','o','r',0};
 335     static const WCHAR URIErrorW[] = {'U','R','I','E','r','r','o','r',0};
 336     static const WCHAR *names[] = {ErrorW, EvalErrorW, RangeErrorW,
 337         ReferenceErrorW, RegExpErrorW, SyntaxErrorW, TypeErrorW, URIErrorW};
 338     jsdisp_t **constr_addr[] = {&ctx->error_constr, &ctx->eval_error_constr,
 339         &ctx->range_error_constr, &ctx->reference_error_constr, &ctx->regexp_error_constr,
 340         &ctx->syntax_error_constr, &ctx->type_error_constr,
 341         &ctx->uri_error_constr};
 342     static builtin_invoke_t constr_val[] = {ErrorConstr_value, EvalErrorConstr_value,
 343         RangeErrorConstr_value, ReferenceErrorConstr_value, RegExpErrorConstr_value,
 344         SyntaxErrorConstr_value, TypeErrorConstr_value, URIErrorConstr_value};
 345
 346     jsdisp_t *err;
 347     unsigned int i;
 348     jsstr_t *str;
 349     HRESULT hres;
 350
 351     for(i=0; i < ARRAY_SIZE(names); i++) {
 352         hres = alloc_error(ctx, i==0 ? object_prototype : NULL, NULL, &err);
 353         if(FAILED(hres))
 354             return hres;
 355
 356         str = jsstr_alloc(names[i]);
 357         if(!str) {
 358             jsdisp_release(err);
 359             return E_OUTOFMEMORY;
 360         }
 361
 362         hres = jsdisp_define_data_property(err, nameW, PROPF_WRITABLE | PROPF_CONFIGURABLE,
 363                                            jsval_string(str));
 364         jsstr_release(str);
 365         if(SUCCEEDED(hres))
 366             hres = create_builtin_constructor(ctx, constr_val[i], names[i], NULL,
 367                     PROPF_CONSTR|1, err, constr_addr[i]);
 368
 369         jsdisp_release(err);
 370         if(FAILED(hres))
 371             return hres;
 372     }
 373
 374     return S_OK;
 375 }
 376
 377 static HRESULT throw_error(script_ctx_t *ctx, HRESULT error, const WCHAR *str, jsdisp_t *constr)
 378 {
 379     WCHAR buf[1024], *pos = NULL;
 380     jsdisp_t *err;
 381     jsstr_t *msg;
 382     HRESULT hres;
 383
 384     if(!is_jscript_error(error))
 385         return error;
 386
 387     buf[0] = '\0';
 388     LoadStringW(jscript_hinstance, HRESULT_CODE(error), buf, ARRAY_SIZE(buf));
 389
 390     if(str) pos = strchrW(buf, '|');
 391     if(pos) {
 392         int len = strlenW(str);
 393         memmove(pos+len, pos+1, (strlenW(pos+1)+1)*sizeof(WCHAR));
 394         memcpy(pos, str, len*sizeof(WCHAR));
 395     }
 396
 397     WARN("%s\n", debugstr_w(buf));
 398
 399     msg = jsstr_alloc(buf);
 400     if(!msg)
 401         return E_OUTOFMEMORY;
 402
 403     hres = create_error(ctx, constr, error, msg, &err);
 404     jsstr_release(msg);
 405     if(FAILED(hres))
 406         return hres;
 407
 408     jsval_release(ctx->ei.val);
 409     ctx->ei.val = jsval_obj(err);
 410     return error;
 411 }
 412
 413 HRESULT throw_generic_error(script_ctx_t *ctx, HRESULT error, const WCHAR *str)
 414 {
 415     return throw_error(ctx, error, str, ctx->error_constr);
 416 }
 417
 418 HRESULT throw_range_error(script_ctx_t *ctx, HRESULT error, const WCHAR *str)
 419 {
 420     return throw_error(ctx, error, str, ctx->range_error_constr);
 421 }
 422
 423 HRESULT throw_reference_error(script_ctx_t *ctx, HRESULT error, const WCHAR *str)
 424 {
 425     return throw_error(ctx, error, str, ctx->reference_error_constr);
 426 }
 427
 428 HRESULT throw_regexp_error(script_ctx_t *ctx, HRESULT error, const WCHAR *str)
 429 {
 430     return throw_error(ctx, error, str, ctx->regexp_error_constr);
 431 }
 432
 433 HRESULT throw_syntax_error(script_ctx_t *ctx, HRESULT error, const WCHAR *str)
 434 {
 435     return throw_error(ctx, error, str, ctx->syntax_error_constr);
 436 }
 437
 438 HRESULT throw_type_error(script_ctx_t *ctx, HRESULT error, const WCHAR *str)
 439 {
 440     return throw_error(ctx, error, str, ctx->type_error_constr);
 441 }
 442
 443 HRESULT throw_uri_error(script_ctx_t *ctx, HRESULT error, const WCHAR *str)
 444 {
 445     return throw_error(ctx, error, str, ctx->uri_error_constr);
 446 }