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 #include "config.h"
  19 #include "wine/port.h"
  20
  21 #include <math.h>
  22
  23 #include "jscript.h"
  24
  25 #include "wine/debug.h"
  26
  27 WINE_DEFAULT_DEBUG_CHANNEL(jscript);
  28
  29 static const WCHAR descriptionW[] = {'d','e','s','c','r','i','p','t','i','o','n',0};
  30 static const WCHAR messageW[] = {'m','e','s','s','a','g','e',0};
  31 static const WCHAR nameW[] = {'n','a','m','e',0};
  32 static const WCHAR numberW[] = {'n','u','m','b','e','r',0};
  33 static const WCHAR toStringW[] = {'t','o','S','t','r','i','n','g',0};
  34
  35 /* ECMA-262 3rd Edition    15.11.4.4 */
  36 static HRESULT Error_toString(script_ctx_t *ctx, vdisp_t *vthis, WORD flags,
  37         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
  38 {
  39     jsdisp_t *jsthis;
  40     BSTR name = NULL, msg = NULL, ret = NULL;
  41     VARIANT v;
  42     HRESULT hres;
  43
  44     static const WCHAR object_errorW[] = {'[','o','b','j','e','c','t',' ','E','r','r','o','r',']',0};
  45
  46     TRACE("\n");
  47
  48     jsthis = get_jsdisp(vthis);
  49     if(!jsthis || ctx->version < 2) {
  50         if(retv) {
  51             V_VT(retv) = VT_BSTR;
  52             V_BSTR(retv) = SysAllocString(object_errorW);
  53             if(!V_BSTR(retv))
  54                 return E_OUTOFMEMORY;
  55         }
  56         return S_OK;
  57     }
  58
  59     hres = jsdisp_propget_name(jsthis, nameW, &v, ei);
  60     if(FAILED(hres))
  61         return hres;
  62
  63     if(V_VT(&v) != VT_EMPTY) {
  64         hres = to_string(ctx, &v, ei, &name);
  65         VariantClear(&v);
  66         if(FAILED(hres))
  67             return hres;
  68         if(!*name) {
  69             SysFreeString(name);
  70             name = NULL;
  71         }
  72     }
  73
  74     hres = jsdisp_propget_name(jsthis, messageW, &v, ei);
  75     if(SUCCEEDED(hres)) {
  76         if(V_VT(&v) != VT_EMPTY) {
  77             hres = to_string(ctx, &v, ei, &msg);
  78             VariantClear(&v);
  79             if(SUCCEEDED(hres) && !*msg) {
  80                 SysFreeString(msg);
  81                 msg = NULL;
  82             }
  83         }
  84     }
  85
  86     if(SUCCEEDED(hres)) {
  87         if(name && msg) {
  88             DWORD name_len, msg_len;
  89
  90             name_len = SysStringLen(name);
  91             msg_len = SysStringLen(msg);
  92
  93             ret = SysAllocStringLen(NULL, name_len + msg_len + 2);
  94             if(ret) {
  95                 memcpy(ret, name, name_len*sizeof(WCHAR));
  96                 ret[name_len] = ':';
  97                 ret[name_len+1] = ' ';
  98                 memcpy(ret+name_len+2, msg, msg_len*sizeof(WCHAR));
  99             }
 100         }else if(name) {
 101             ret = name;
 102             name = NULL;
 103         }else if(msg) {
 104             ret = msg;
 105             msg = NULL;
 106         }else {
 107             ret = SysAllocString(object_errorW);
 108         }
 109     }
 110
 111     SysFreeString(msg);
 112     SysFreeString(name);
 113     if(FAILED(hres))
 114         return hres;
 115     if(!ret)
 116         return E_OUTOFMEMORY;
 117
 118     if(retv) {
 119         V_VT(retv) = VT_BSTR;
 120         V_BSTR(retv) = ret;
 121     }else {
 122         SysFreeString(ret);
 123     }
 124
 125     return S_OK;
 126 }
 127
 128 static HRESULT Error_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 129         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
 130 {
 131     TRACE("\n");
 132
 133     switch(flags) {
 134     case INVOKE_FUNC:
 135         return throw_type_error(ctx, ei, JS_E_FUNCTION_EXPECTED, NULL);
 136     default:
 137         FIXME("unimplemented flags %x\n", flags);
 138         return E_NOTIMPL;
 139     }
 140
 141     return S_OK;
 142 }
 143
 144 static const builtin_prop_t Error_props[] = {
 145     {toStringW,                 Error_toString,                     PROPF_METHOD}
 146 };
 147
 148 static const builtin_info_t Error_info = {
 149     JSCLASS_ERROR,
 150     {NULL, Error_value, 0},
 151     sizeof(Error_props)/sizeof(*Error_props),
 152     Error_props,
 153     NULL,
 154     NULL
 155 };
 156
 157 static const builtin_info_t ErrorInst_info = {
 158     JSCLASS_ERROR,
 159     {NULL, Error_value, 0},
 160     0,
 161     NULL,
 162     NULL,
 163     NULL
 164 };
 165
 166 static HRESULT alloc_error(script_ctx_t *ctx, jsdisp_t *prototype,
 167         jsdisp_t *constr, jsdisp_t **ret)
 168 {
 169     jsdisp_t *err;
 170     HRESULT hres;
 171
 172     err = heap_alloc_zero(sizeof(*err));
 173     if(!err)
 174         return E_OUTOFMEMORY;
 175
 176     if(prototype)
 177         hres = init_dispex(err, ctx, &Error_info, prototype);
 178     else
 179         hres = init_dispex_from_constr(err, ctx, &ErrorInst_info,
 180             constr ? constr : ctx->error_constr);
 181     if(FAILED(hres)) {
 182         heap_free(err);
 183         return hres;
 184     }
 185
 186     *ret = err;
 187     return S_OK;
 188 }
 189
 190 static HRESULT create_error(script_ctx_t *ctx, jsdisp_t *constr,
 191         UINT number, const WCHAR *msg, jsdisp_t **ret)
 192 {
 193     jsdisp_t *err;
 194     VARIANT v;
 195     HRESULT hres;
 196
 197     hres = alloc_error(ctx, NULL, constr, &err);
 198     if(FAILED(hres))
 199         return hres;
 200
 201     V_VT(&v) = VT_I4;
 202     V_I4(&v) = number;
 203     hres = jsdisp_propput_name(err, numberW, &v, NULL/*FIXME*/);
 204     if(FAILED(hres)) {
 205         jsdisp_release(err);
 206         return hres;
 207     }
 208
 209     V_VT(&v) = VT_BSTR;
 210     if(msg) V_BSTR(&v) = SysAllocString(msg);
 211     else V_BSTR(&v) = SysAllocStringLen(NULL, 0);
 212     if(V_BSTR(&v)) {
 213         hres = jsdisp_propput_name(err, messageW, &v, NULL/*FIXME*/);
 214         if(SUCCEEDED(hres))
 215             hres = jsdisp_propput_name(err, descriptionW, &v, NULL/*FIXME*/);
 216         SysFreeString(V_BSTR(&v));
 217     }else {
 218         hres = E_OUTOFMEMORY;
 219     }
 220     if(FAILED(hres)) {
 221         jsdisp_release(err);
 222         return hres;
 223     }
 224
 225     *ret = err;
 226     return S_OK;
 227 }
 228
 229 static HRESULT error_constr(script_ctx_t *ctx, WORD flags, DISPPARAMS *dp,
 230         VARIANT *retv, jsexcept_t *ei, jsdisp_t *constr) {
 231     jsdisp_t *err;
 232     UINT num = 0;
 233     BSTR msg = NULL;
 234     HRESULT hres;
 235
 236     if(arg_cnt(dp)) {
 237         VARIANT numv;
 238
 239         hres = to_number(ctx, get_arg(dp, 0), ei, &numv);
 240         if(FAILED(hres) || (V_VT(&numv)==VT_R8 && isnan(V_R8(&numv))))
 241             hres = to_string(ctx, get_arg(dp, 0), ei, &msg);
 242         else if(V_VT(&numv) == VT_I4)
 243             num = V_I4(&numv);
 244         else
 245             num = V_R8(&numv);
 246
 247         if(FAILED(hres))
 248             return hres;
 249     }
 250
 251     if(arg_cnt(dp)>1 && !msg) {
 252         hres = to_string(ctx, get_arg(dp, 1), ei, &msg);
 253         if(FAILED(hres))
 254             return hres;
 255     }
 256
 257     switch(flags) {
 258     case INVOKE_FUNC:
 259     case DISPATCH_CONSTRUCT:
 260         hres = create_error(ctx, constr, num, msg, &err);
 261         SysFreeString(msg);
 262
 263         if(FAILED(hres))
 264             return hres;
 265
 266         if(retv)
 267             var_set_jsdisp(retv, err);
 268         else
 269             jsdisp_release(err);
 270
 271         return S_OK;
 272
 273     default:
 274         FIXME("unimplemented flags %x\n", flags);
 275         return E_NOTIMPL;
 276     }
 277 }
 278
 279 static HRESULT ErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 280         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
 281 {
 282     TRACE("\n");
 283     return error_constr(ctx, flags, dp, retv, ei, ctx->error_constr);
 284 }
 285
 286 static HRESULT EvalErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 287         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
 288 {
 289     TRACE("\n");
 290     return error_constr(ctx, flags, dp, retv, ei, ctx->eval_error_constr);
 291 }
 292
 293 static HRESULT RangeErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 294         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
 295 {
 296     TRACE("\n");
 297     return error_constr(ctx, flags, dp, retv, ei, ctx->range_error_constr);
 298 }
 299
 300 static HRESULT ReferenceErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 301         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
 302 {
 303     TRACE("\n");
 304     return error_constr(ctx, flags, dp, retv, ei, ctx->reference_error_constr);
 305 }
 306
 307 static HRESULT RegExpErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 308         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
 309 {
 310     TRACE("\n");
 311     return error_constr(ctx, flags, dp, retv, ei, ctx->regexp_error_constr);
 312 }
 313
 314 static HRESULT SyntaxErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 315         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
 316 {
 317     TRACE("\n");
 318     return error_constr(ctx, flags, dp, retv, ei, ctx->syntax_error_constr);
 319 }
 320
 321 static HRESULT TypeErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 322         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
 323 {
 324     TRACE("\n");
 325     return error_constr(ctx, flags, dp, retv, ei, ctx->type_error_constr);
 326 }
 327
 328 static HRESULT URIErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 329         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
 330 {
 331     TRACE("\n");
 332     return error_constr(ctx, flags, dp, retv, ei, ctx->uri_error_constr);
 333 }
 334
 335 HRESULT init_error_constr(script_ctx_t *ctx, jsdisp_t *object_prototype)
 336 {
 337     static const WCHAR ErrorW[] = {'E','r','r','o','r',0};
 338     static const WCHAR EvalErrorW[] = {'E','v','a','l','E','r','r','o','r',0};
 339     static const WCHAR RangeErrorW[] = {'R','a','n','g','e','E','r','r','o','r',0};
 340     static const WCHAR ReferenceErrorW[] = {'R','e','f','e','r','e','n','c','e','E','r','r','o','r',0};
 341     static const WCHAR RegExpErrorW[] = {'R','e','g','E','x','p','E','r','r','o','r',0};
 342     static const WCHAR SyntaxErrorW[] = {'S','y','n','t','a','x','E','r','r','o','r',0};
 343     static const WCHAR TypeErrorW[] = {'T','y','p','e','E','r','r','o','r',0};
 344     static const WCHAR URIErrorW[] = {'U','R','I','E','r','r','o','r',0};
 345     static const WCHAR *names[] = {ErrorW, EvalErrorW, RangeErrorW,
 346         ReferenceErrorW, RegExpErrorW, SyntaxErrorW, TypeErrorW, URIErrorW};
 347     jsdisp_t **constr_addr[] = {&ctx->error_constr, &ctx->eval_error_constr,
 348         &ctx->range_error_constr, &ctx->reference_error_constr, &ctx->regexp_error_constr,
 349         &ctx->syntax_error_constr, &ctx->type_error_constr,
 350         &ctx->uri_error_constr};
 351     static builtin_invoke_t constr_val[] = {ErrorConstr_value, EvalErrorConstr_value,
 352         RangeErrorConstr_value, ReferenceErrorConstr_value, RegExpErrorConstr_value,
 353         SyntaxErrorConstr_value, TypeErrorConstr_value, URIErrorConstr_value};
 354
 355     jsdisp_t *err;
 356     INT i;
 357     VARIANT v;
 358     HRESULT hres;
 359
 360     for(i=0; i < sizeof(names)/sizeof(names[0]); i++) {
 361         hres = alloc_error(ctx, i==0 ? object_prototype : NULL, NULL, &err);
 362         if(FAILED(hres))
 363             return hres;
 364
 365         V_VT(&v) = VT_BSTR;
 366         V_BSTR(&v) = SysAllocString(names[i]);
 367         if(!V_BSTR(&v)) {
 368             jsdisp_release(err);
 369             return E_OUTOFMEMORY;
 370         }
 371
 372         hres = jsdisp_propput_name(err, nameW, &v, NULL/*FIXME*/);
 373
 374         if(SUCCEEDED(hres))
 375             hres = create_builtin_function(ctx, constr_val[i], names[i], NULL,
 376                     PROPF_CONSTR|1, err, constr_addr[i]);
 377
 378         jsdisp_release(err);
 379         VariantClear(&v);
 380         if(FAILED(hres))
 381             return hres;
 382     }
 383
 384     return S_OK;
 385 }
 386
 387 static HRESULT throw_error(script_ctx_t *ctx, jsexcept_t *ei, HRESULT error, const WCHAR *str, jsdisp_t *constr)
 388 {
 389     WCHAR buf[1024], *pos = NULL;
 390     jsdisp_t *err;
 391     HRESULT hres;
 392
 393     if(!is_jscript_error(error))
 394         return error;
 395
 396     buf[0] = '\0';
 397     LoadStringW(jscript_hinstance, HRESULT_CODE(error),  buf, sizeof(buf)/sizeof(WCHAR));
 398
 399     if(str) pos = strchrW(buf, '|');
 400     if(pos) {
 401         int len = strlenW(str);
 402         memmove(pos+len, pos+1, (strlenW(pos+1)+1)*sizeof(WCHAR));
 403         memcpy(pos, str, len*sizeof(WCHAR));
 404     }
 405
 406     WARN("%s\n", debugstr_w(buf));
 407
 408     hres = create_error(ctx, constr, error, buf, &err);
 409     if(FAILED(hres))
 410         return hres;
 411
 412     if(ei)
 413         var_set_jsdisp(&ei->var, err);
 414     return error;
 415 }
 416
 417 HRESULT throw_generic_error(script_ctx_t *ctx, jsexcept_t *ei, HRESULT error, const WCHAR *str)
 418 {
 419     return throw_error(ctx, ei, error, str, ctx->error_constr);
 420 }
 421
 422 HRESULT throw_range_error(script_ctx_t *ctx, jsexcept_t *ei, HRESULT error, const WCHAR *str)
 423 {
 424     return throw_error(ctx, ei, error, str, ctx->range_error_constr);
 425 }
 426
 427 HRESULT throw_reference_error(script_ctx_t *ctx, jsexcept_t *ei, HRESULT error, const WCHAR *str)
 428 {
 429     return throw_error(ctx, ei, error, str, ctx->reference_error_constr);
 430 }
 431
 432 HRESULT throw_regexp_error(script_ctx_t *ctx, jsexcept_t *ei, HRESULT error, const WCHAR *str)
 433 {
 434     return throw_error(ctx, ei, error, str, ctx->regexp_error_constr);
 435 }
 436
 437 HRESULT throw_syntax_error(script_ctx_t *ctx, jsexcept_t *ei, HRESULT error, const WCHAR *str)
 438 {
 439     return throw_error(ctx, ei, error, str, ctx->syntax_error_constr);
 440 }
 441
 442 HRESULT throw_type_error(script_ctx_t *ctx, jsexcept_t *ei, HRESULT error, const WCHAR *str)
 443 {
 444     return throw_error(ctx, ei, error, str, ctx->type_error_constr);
 445 }
 446
 447 HRESULT throw_uri_error(script_ctx_t *ctx, jsexcept_t *ei, HRESULT error, const WCHAR *str)
 448 {
 449     return throw_error(ctx, ei, error, str, ctx->uri_error_constr);
 450 }