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         double n;
 238
 239         hres = to_number(ctx, get_arg(dp, 0), ei, &n);
 240         if(FAILED(hres)) /* FIXME: really? */
 241             n = ret_nan();
 242         if(isnan(n))
 243             hres = to_string(ctx, get_arg(dp, 0), ei, &msg);
 244         if(FAILED(hres))
 245             return hres;
 246         num = n;
 247     }
 248
 249     if(arg_cnt(dp)>1 && !msg) {
 250         hres = to_string(ctx, get_arg(dp, 1), ei, &msg);
 251         if(FAILED(hres))
 252             return hres;
 253     }
 254
 255     switch(flags) {
 256     case INVOKE_FUNC:
 257     case DISPATCH_CONSTRUCT:
 258         hres = create_error(ctx, constr, num, msg, &err);
 259         SysFreeString(msg);
 260
 261         if(FAILED(hres))
 262             return hres;
 263
 264         if(retv)
 265             var_set_jsdisp(retv, err);
 266         else
 267             jsdisp_release(err);
 268
 269         return S_OK;
 270
 271     default:
 272         FIXME("unimplemented flags %x\n", flags);
 273         return E_NOTIMPL;
 274     }
 275 }
 276
 277 static HRESULT ErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 278         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
 279 {
 280     TRACE("\n");
 281     return error_constr(ctx, flags, dp, retv, ei, ctx->error_constr);
 282 }
 283
 284 static HRESULT EvalErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 285         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
 286 {
 287     TRACE("\n");
 288     return error_constr(ctx, flags, dp, retv, ei, ctx->eval_error_constr);
 289 }
 290
 291 static HRESULT RangeErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 292         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
 293 {
 294     TRACE("\n");
 295     return error_constr(ctx, flags, dp, retv, ei, ctx->range_error_constr);
 296 }
 297
 298 static HRESULT ReferenceErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 299         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
 300 {
 301     TRACE("\n");
 302     return error_constr(ctx, flags, dp, retv, ei, ctx->reference_error_constr);
 303 }
 304
 305 static HRESULT RegExpErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 306         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
 307 {
 308     TRACE("\n");
 309     return error_constr(ctx, flags, dp, retv, ei, ctx->regexp_error_constr);
 310 }
 311
 312 static HRESULT SyntaxErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 313         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
 314 {
 315     TRACE("\n");
 316     return error_constr(ctx, flags, dp, retv, ei, ctx->syntax_error_constr);
 317 }
 318
 319 static HRESULT TypeErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 320         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
 321 {
 322     TRACE("\n");
 323     return error_constr(ctx, flags, dp, retv, ei, ctx->type_error_constr);
 324 }
 325
 326 static HRESULT URIErrorConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 327         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
 328 {
 329     TRACE("\n");
 330     return error_constr(ctx, flags, dp, retv, ei, ctx->uri_error_constr);
 331 }
 332
 333 HRESULT init_error_constr(script_ctx_t *ctx, jsdisp_t *object_prototype)
 334 {
 335     static const WCHAR ErrorW[] = {'E','r','r','o','r',0};
 336     static const WCHAR EvalErrorW[] = {'E','v','a','l','E','r','r','o','r',0};
 337     static const WCHAR RangeErrorW[] = {'R','a','n','g','e','E','r','r','o','r',0};
 338     static const WCHAR ReferenceErrorW[] = {'R','e','f','e','r','e','n','c','e','E','r','r','o','r',0};
 339     static const WCHAR RegExpErrorW[] = {'R','e','g','E','x','p','E','r','r','o','r',0};
 340     static const WCHAR SyntaxErrorW[] = {'S','y','n','t','a','x','E','r','r','o','r',0};
 341     static const WCHAR TypeErrorW[] = {'T','y','p','e','E','r','r','o','r',0};
 342     static const WCHAR URIErrorW[] = {'U','R','I','E','r','r','o','r',0};
 343     static const WCHAR *names[] = {ErrorW, EvalErrorW, RangeErrorW,
 344         ReferenceErrorW, RegExpErrorW, SyntaxErrorW, TypeErrorW, URIErrorW};
 345     jsdisp_t **constr_addr[] = {&ctx->error_constr, &ctx->eval_error_constr,
 346         &ctx->range_error_constr, &ctx->reference_error_constr, &ctx->regexp_error_constr,
 347         &ctx->syntax_error_constr, &ctx->type_error_constr,
 348         &ctx->uri_error_constr};
 349     static builtin_invoke_t constr_val[] = {ErrorConstr_value, EvalErrorConstr_value,
 350         RangeErrorConstr_value, ReferenceErrorConstr_value, RegExpErrorConstr_value,
 351         SyntaxErrorConstr_value, TypeErrorConstr_value, URIErrorConstr_value};
 352
 353     jsdisp_t *err;
 354     INT i;
 355     VARIANT v;
 356     HRESULT hres;
 357
 358     for(i=0; i < sizeof(names)/sizeof(names[0]); i++) {
 359         hres = alloc_error(ctx, i==0 ? object_prototype : NULL, NULL, &err);
 360         if(FAILED(hres))
 361             return hres;
 362
 363         V_VT(&v) = VT_BSTR;
 364         V_BSTR(&v) = SysAllocString(names[i]);
 365         if(!V_BSTR(&v)) {
 366             jsdisp_release(err);
 367             return E_OUTOFMEMORY;
 368         }
 369
 370         hres = jsdisp_propput_name(err, nameW, &v, NULL/*FIXME*/);
 371
 372         if(SUCCEEDED(hres))
 373             hres = create_builtin_function(ctx, constr_val[i], names[i], NULL,
 374                     PROPF_CONSTR|1, err, constr_addr[i]);
 375
 376         jsdisp_release(err);
 377         VariantClear(&v);
 378         if(FAILED(hres))
 379             return hres;
 380     }
 381
 382     return S_OK;
 383 }
 384
 385 static HRESULT throw_error(script_ctx_t *ctx, jsexcept_t *ei, HRESULT error, const WCHAR *str, jsdisp_t *constr)
 386 {
 387     WCHAR buf[1024], *pos = NULL;
 388     jsdisp_t *err;
 389     HRESULT hres;
 390
 391     if(!is_jscript_error(error))
 392         return error;
 393
 394     buf[0] = '\0';
 395     LoadStringW(jscript_hinstance, HRESULT_CODE(error),  buf, sizeof(buf)/sizeof(WCHAR));
 396
 397     if(str) pos = strchrW(buf, '|');
 398     if(pos) {
 399         int len = strlenW(str);
 400         memmove(pos+len, pos+1, (strlenW(pos+1)+1)*sizeof(WCHAR));
 401         memcpy(pos, str, len*sizeof(WCHAR));
 402     }
 403
 404     WARN("%s\n", debugstr_w(buf));
 405
 406     hres = create_error(ctx, constr, error, buf, &err);
 407     if(FAILED(hres))
 408         return hres;
 409
 410     if(ei)
 411         var_set_jsdisp(&ei->var, err);
 412     return error;
 413 }
 414
 415 HRESULT throw_generic_error(script_ctx_t *ctx, jsexcept_t *ei, HRESULT error, const WCHAR *str)
 416 {
 417     return throw_error(ctx, ei, error, str, ctx->error_constr);
 418 }
 419
 420 HRESULT throw_range_error(script_ctx_t *ctx, jsexcept_t *ei, HRESULT error, const WCHAR *str)
 421 {
 422     return throw_error(ctx, ei, error, str, ctx->range_error_constr);
 423 }
 424
 425 HRESULT throw_reference_error(script_ctx_t *ctx, jsexcept_t *ei, HRESULT error, const WCHAR *str)
 426 {
 427     return throw_error(ctx, ei, error, str, ctx->reference_error_constr);
 428 }
 429
 430 HRESULT throw_regexp_error(script_ctx_t *ctx, jsexcept_t *ei, HRESULT error, const WCHAR *str)
 431 {
 432     return throw_error(ctx, ei, error, str, ctx->regexp_error_constr);
 433 }
 434
 435 HRESULT throw_syntax_error(script_ctx_t *ctx, jsexcept_t *ei, HRESULT error, const WCHAR *str)
 436 {
 437     return throw_error(ctx, ei, error, str, ctx->syntax_error_constr);
 438 }
 439
 440 HRESULT throw_type_error(script_ctx_t *ctx, jsexcept_t *ei, HRESULT error, const WCHAR *str)
 441 {
 442     return throw_error(ctx, ei, error, str, ctx->type_error_constr);
 443 }
 444
 445 HRESULT throw_uri_error(script_ctx_t *ctx, jsexcept_t *ei, HRESULT error, const WCHAR *str)
 446 {
 447     return throw_error(ctx, ei, error, str, ctx->uri_error_constr);
 448 }