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     BSTR 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             BSTR ret = SysAllocString(object_errorW);
  53             if(!ret)
  54                 return E_OUTOFMEMORY;
  55             *r = jsval_string(ret);
  56         }
  57         return S_OK;
  58     }
  59
  60     hres = jsdisp_propget_name(jsthis, nameW, &v);
  61     if(FAILED(hres))
  62         return hres;
  63
  64     if(!is_undefined(v)) {
  65         hres = to_string(ctx, v, &name);
  66         jsval_release(v);
  67         if(FAILED(hres))
  68             return hres;
  69         if(!*name) {
  70             SysFreeString(name);
  71             name = NULL;
  72         }
  73     }
  74
  75     hres = jsdisp_propget_name(jsthis, messageW, &v);
  76     if(SUCCEEDED(hres)) {
  77         if(!is_undefined(v)) {
  78             hres = to_string(ctx, v, &msg);
  79             jsval_release(v);
  80             if(SUCCEEDED(hres) && !*msg) {
  81                 SysFreeString(msg);
  82                 msg = NULL;
  83             }
  84         }
  85     }
  86
  87     if(SUCCEEDED(hres)) {
  88         if(name && msg) {
  89             DWORD name_len, msg_len;
  90
  91             name_len = SysStringLen(name);
  92             msg_len = SysStringLen(msg);
  93
  94             ret = SysAllocStringLen(NULL, name_len + msg_len + 2);
  95             if(ret) {
  96                 memcpy(ret, name, name_len*sizeof(WCHAR));
  97                 ret[name_len] = ':';
  98                 ret[name_len+1] = ' ';
  99                 memcpy(ret+name_len+2, msg, msg_len*sizeof(WCHAR));
 100             }
 101         }else if(name) {
 102             ret = name;
 103             name = NULL;
 104         }else if(msg) {
 105             ret = msg;
 106             msg = NULL;
 107         }else {
 108             ret = SysAllocString(object_errorW);
 109         }
 110     }
 111
 112     SysFreeString(msg);
 113     SysFreeString(name);
 114     if(FAILED(hres))
 115         return hres;
 116     if(!ret)
 117         return E_OUTOFMEMORY;
 118
 119     if(r)
 120         *r = jsval_string(ret);
 121     else
 122         SysFreeString(ret);
 123     return S_OK;
 124 }
 125
 126 static HRESULT Error_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 127         unsigned argc, jsval_t *argv, jsval_t *r)
 128 {
 129     TRACE("\n");
 130
 131     switch(flags) {
 132     case INVOKE_FUNC:
 133         return throw_type_error(ctx, JS_E_FUNCTION_EXPECTED, NULL);
 134     default:
 135         FIXME("unimplemented flags %x\n", flags);
 136         return E_NOTIMPL;
 137     }
 138
 139     return S_OK;
 140 }
 141
 142 static const builtin_prop_t Error_props[] = {
 143     {toStringW,                 Error_toString,                     PROPF_METHOD}
 144 };
 145
 146 static const builtin_info_t Error_info = {
 147     JSCLASS_ERROR,
 148     {NULL, Error_value, 0},
 149     sizeof(Error_props)/sizeof(*Error_props),
 150     Error_props,
 151     NULL,
 152     NULL
 153 };
 154
 155 static const builtin_info_t ErrorInst_info = {
 156     JSCLASS_ERROR,
 157     {NULL, Error_value, 0},
 158     0,
 159     NULL,
 160     NULL,
 161     NULL
 162 };
 163
 164 static HRESULT alloc_error(script_ctx_t *ctx, jsdisp_t *prototype,
 165         jsdisp_t *constr, jsdisp_t **ret)
 166 {
 167     jsdisp_t *err;
 168     HRESULT hres;
 169
 170     err = heap_alloc_zero(sizeof(*err));
 171     if(!err)
 172         return E_OUTOFMEMORY;
 173
 174     if(prototype)
 175         hres = init_dispex(err, ctx, &Error_info, prototype);
 176     else
 177         hres = init_dispex_from_constr(err, ctx, &ErrorInst_info,
 178             constr ? constr : ctx->error_constr);
 179     if(FAILED(hres)) {
 180         heap_free(err);
 181         return hres;
 182     }
 183
 184     *ret = err;
 185     return S_OK;
 186 }
 187
 188 static HRESULT create_error(script_ctx_t *ctx, jsdisp_t *constr,
 189         UINT number, const WCHAR *msg, jsdisp_t **ret)
 190 {
 191     jsdisp_t *err;
 192     BSTR str;
 193     HRESULT hres;
 194
 195     hres = alloc_error(ctx, NULL, constr, &err);
 196     if(FAILED(hres))
 197         return hres;
 198
 199     hres = jsdisp_propput_name(err, numberW, jsval_number((INT)number));
 200     if(FAILED(hres)) {
 201         jsdisp_release(err);
 202         return hres;
 203     }
 204
 205     if(msg) str = SysAllocString(msg);
 206     else str = SysAllocStringLen(NULL, 0);
 207     if(str) {
 208         hres = jsdisp_propput_name(err, messageW, jsval_string(str));
 209         if(SUCCEEDED(hres))
 210             hres = jsdisp_propput_name(err, descriptionW, jsval_string(str));
 211         SysFreeString(str);
 212     }else {
 213         hres = E_OUTOFMEMORY;
 214     }
 215     if(FAILED(hres)) {
 216         jsdisp_release(err);
 217         return hres;
 218     }
 219
 220     *ret = err;
 221     return S_OK;
 222 }
 223
 224 static HRESULT error_constr(script_ctx_t *ctx, WORD flags, unsigned argc, jsval_t *argv,
 225         jsval_t *r, jsdisp_t *constr) {
 226     jsdisp_t *err;
 227     UINT num = 0;
 228     BSTR msg = NULL;
 229     HRESULT hres;
 230
 231     if(argc) {
 232         double n;
 233
 234         hres = to_number(ctx, argv[0], &n);
 235         if(FAILED(hres)) /* FIXME: really? */
 236             n = NAN;
 237         if(isnan(n))
 238             hres = to_string(ctx, argv[0], &msg);
 239         if(FAILED(hres))
 240             return hres;
 241         num = n;
 242     }
 243
 244     if(argc>1 && !msg) {
 245         hres = to_string(ctx, argv[1], &msg);
 246         if(FAILED(hres))
 247             return hres;
 248     }
 249
 250     switch(flags) {
 251     case INVOKE_FUNC:
 252     case DISPATCH_CONSTRUCT:
 253         hres = create_error(ctx, constr, num, msg, &err);
 254         SysFreeString(msg);
 255
 256         if(FAILED(hres))
 257             return hres;
 258
 259         if(r)
 260             *r = jsval_obj(err);
 261         else
 262             jsdisp_release(err);
 263         return S_OK;
 264
 265     default:
 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     INT i;
 349     BSTR str;
 350     HRESULT hres;
 351
 352     for(i=0; i < sizeof(names)/sizeof(names[0]); i++) {
 353         hres = alloc_error(ctx, i==0 ? object_prototype : NULL, NULL, &err);
 354         if(FAILED(hres))
 355             return hres;
 356
 357         str = SysAllocString(names[i]);
 358         if(!str) {
 359             jsdisp_release(err);
 360             return E_OUTOFMEMORY;
 361         }
 362
 363         hres = jsdisp_propput_name(err, nameW, jsval_string(str));
 364         SysFreeString(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     HRESULT hres;
 382
 383     if(!is_jscript_error(error))
 384         return error;
 385
 386     buf[0] = '\0';
 387     LoadStringW(jscript_hinstance, HRESULT_CODE(error),  buf, sizeof(buf)/sizeof(WCHAR));
 388
 389     if(str) pos = strchrW(buf, '|');
 390     if(pos) {
 391         int len = strlenW(str);
 392         memmove(pos+len, pos+1, (strlenW(pos+1)+1)*sizeof(WCHAR));
 393         memcpy(pos, str, len*sizeof(WCHAR));
 394     }
 395
 396     WARN("%s\n", debugstr_w(buf));
 397
 398     hres = create_error(ctx, constr, error, buf, &err);
 399     if(FAILED(hres))
 400         return hres;
 401
 402     jsval_release(ctx->ei.val);
 403     ctx->ei.val = jsval_obj(err);
 404     return error;
 405 }
 406
 407 HRESULT throw_generic_error(script_ctx_t *ctx, HRESULT error, const WCHAR *str)
 408 {
 409     return throw_error(ctx, error, str, ctx->error_constr);
 410 }
 411
 412 HRESULT throw_range_error(script_ctx_t *ctx, HRESULT error, const WCHAR *str)
 413 {
 414     return throw_error(ctx, error, str, ctx->range_error_constr);
 415 }
 416
 417 HRESULT throw_reference_error(script_ctx_t *ctx, HRESULT error, const WCHAR *str)
 418 {
 419     return throw_error(ctx, error, str, ctx->reference_error_constr);
 420 }
 421
 422 HRESULT throw_regexp_error(script_ctx_t *ctx, HRESULT error, const WCHAR *str)
 423 {
 424     return throw_error(ctx, error, str, ctx->regexp_error_constr);
 425 }
 426
 427 HRESULT throw_syntax_error(script_ctx_t *ctx, HRESULT error, const WCHAR *str)
 428 {
 429     return throw_error(ctx, error, str, ctx->syntax_error_constr);
 430 }
 431
 432 HRESULT throw_type_error(script_ctx_t *ctx, HRESULT error, const WCHAR *str)
 433 {
 434     return throw_error(ctx, error, str, ctx->type_error_constr);
 435 }
 436
 437 HRESULT throw_uri_error(script_ctx_t *ctx, HRESULT error, const WCHAR *str)
 438 {
 439     return throw_error(ctx, error, str, ctx->uri_error_constr);
 440 }