reactos/dll/win32/jscript/object.c

   1 /*
   2  * Copyright 2008 Jacek Caban for CodeWeavers
   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 <assert.h>
  20
  21 #include "jscript.h"
  22
  23 #include <wine/debug.h>
  24
  25 WINE_DEFAULT_DEBUG_CHANNEL(jscript);
  26
  27 static const WCHAR toStringW[] = {'t','o','S','t','r','i','n','g',0};
  28 static const WCHAR toLocaleStringW[] = {'t','o','L','o','c','a','l','e','S','t','r','i','n','g',0};
  29 static const WCHAR valueOfW[] = {'v','a','l','u','e','O','f',0};
  30 static const WCHAR hasOwnPropertyW[] = {'h','a','s','O','w','n','P','r','o','p','e','r','t','y',0};
  31 static const WCHAR propertyIsEnumerableW[] =
  32     {'p','r','o','p','e','r','t','y','I','s','E','n','u','m','e','r','a','b','l','e',0};
  33 static const WCHAR isPrototypeOfW[] = {'i','s','P','r','o','t','o','t','y','p','e','O','f',0};
  34
  35 static const WCHAR default_valueW[] = {'[','o','b','j','e','c','t',' ','O','b','j','e','c','t',']',0};
  36
  37 static HRESULT Object_toString(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
  38         jsval_t *r)
  39 {
  40     jsdisp_t *jsdisp;
  41     const WCHAR *str;
  42
  43     static const WCHAR formatW[] = {'[','o','b','j','e','c','t',' ','%','s',']',0};
  44
  45     static const WCHAR arrayW[] = {'A','r','r','a','y',0};
  46     static const WCHAR booleanW[] = {'B','o','o','l','e','a','n',0};
  47     static const WCHAR dateW[] = {'D','a','t','e',0};
  48     static const WCHAR errorW[] = {'E','r','r','o','r',0};
  49     static const WCHAR functionW[] = {'F','u','n','c','t','i','o','n',0};
  50     static const WCHAR mathW[] = {'M','a','t','h',0};
  51     static const WCHAR numberW[] = {'N','u','m','b','e','r',0};
  52     static const WCHAR objectW[] = {'O','b','j','e','c','t',0};
  53     static const WCHAR regexpW[] = {'R','e','g','E','x','p',0};
  54     static const WCHAR stringW[] = {'S','t','r','i','n','g',0};
  55     /* Keep in sync with jsclass_t enum */
  56     static const WCHAR *names[] = {NULL, arrayW, booleanW, dateW, errorW,
  57         functionW, NULL, mathW, numberW, objectW, regexpW, stringW, objectW, objectW};
  58
  59     TRACE("\n");
  60
  61     jsdisp = get_jsdisp(jsthis);
  62     if(!jsdisp) {
  63         str = objectW;
  64     }else if(names[jsdisp->builtin_info->class]) {
  65         str = names[jsdisp->builtin_info->class];
  66     }else {
  67         assert(jsdisp->builtin_info->class != JSCLASS_NONE);
  68         FIXME("jdisp->builtin_info->class = %d\n", jsdisp->builtin_info->class);
  69         return E_FAIL;
  70     }
  71
  72     if(r) {
  73         jsstr_t *ret;
  74         WCHAR *ptr;
  75
  76         ptr = jsstr_alloc_buf(9+strlenW(str), &ret);
  77         if(!ptr)
  78             return E_OUTOFMEMORY;
  79
  80         sprintfW(ptr, formatW, str);
  81         *r = jsval_string(ret);
  82     }
  83
  84     return S_OK;
  85 }
  86
  87 static HRESULT Object_toLocaleString(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
  88         jsval_t *r)
  89 {
  90     TRACE("\n");
  91
  92     if(!is_jsdisp(jsthis)) {
  93         FIXME("Host object this\n");
  94         return E_FAIL;
  95     }
  96
  97     return jsdisp_call_name(jsthis->u.jsdisp, toStringW, DISPATCH_METHOD, 0, NULL, r);
  98 }
  99
 100 static HRESULT Object_valueOf(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 101         jsval_t *r)
 102 {
 103     TRACE("\n");
 104
 105     if(r) {
 106         IDispatch_AddRef(jsthis->u.disp);
 107         *r = jsval_disp(jsthis->u.disp);
 108     }
 109     return S_OK;
 110 }
 111
 112 static HRESULT Object_hasOwnProperty(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 113         jsval_t *r)
 114 {
 115     jsstr_t *name;
 116     DISPID id;
 117     BSTR bstr;
 118     HRESULT hres;
 119
 120     TRACE("\n");
 121
 122     if(!argc) {
 123         if(r)
 124             *r = jsval_bool(FALSE);
 125         return S_OK;
 126     }
 127
 128     hres = to_string(ctx, argv[0], &name);
 129     if(FAILED(hres))
 130         return hres;
 131
 132     if(is_jsdisp(jsthis)) {
 133         const WCHAR *name_str;
 134         BOOL result;
 135
 136         name_str = jsstr_flatten(name);
 137         if(name_str)
 138             hres = jsdisp_is_own_prop(jsthis->u.jsdisp, name_str, &result);
 139         else
 140             hres = E_OUTOFMEMORY;
 141         jsstr_release(name);
 142         if(FAILED(hres))
 143             return hres;
 144
 145         if(r)
 146             *r = jsval_bool(result);
 147         return S_OK;
 148     }
 149
 150
 151     bstr = SysAllocStringLen(NULL, jsstr_length(name));
 152     if(bstr)
 153         jsstr_flush(name, bstr);
 154     jsstr_release(name);
 155     if(!bstr)
 156         return E_OUTOFMEMORY;
 157
 158     if(is_dispex(jsthis))
 159         hres = IDispatchEx_GetDispID(jsthis->u.dispex, bstr, make_grfdex(ctx, fdexNameCaseSensitive), &id);
 160     else
 161         hres = IDispatch_GetIDsOfNames(jsthis->u.disp, &IID_NULL, &bstr, 1, ctx->lcid, &id);
 162
 163     SysFreeString(bstr);
 164     if(r)
 165         *r = jsval_bool(SUCCEEDED(hres));
 166     return S_OK;
 167 }
 168
 169 static HRESULT Object_propertyIsEnumerable(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 170         jsval_t *r)
 171 {
 172     const WCHAR *name;
 173     jsstr_t *name_str;
 174     BOOL ret;
 175     HRESULT hres;
 176
 177     TRACE("\n");
 178
 179     if(argc != 1) {
 180         FIXME("argc %d not supported\n", argc);
 181         return E_NOTIMPL;
 182     }
 183
 184     if(!is_jsdisp(jsthis)) {
 185         FIXME("Host object this\n");
 186         return E_FAIL;
 187     }
 188
 189     hres = to_flat_string(ctx, argv[0], &name_str, &name);
 190     if(FAILED(hres))
 191         return hres;
 192
 193     hres = jsdisp_is_enumerable(jsthis->u.jsdisp, name, &ret);
 194     jsstr_release(name_str);
 195     if(FAILED(hres))
 196         return hres;
 197
 198     if(r)
 199         *r = jsval_bool(ret);
 200     return S_OK;
 201 }
 202
 203 static HRESULT Object_isPrototypeOf(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 204         jsval_t *r)
 205 {
 206     FIXME("\n");
 207     return E_NOTIMPL;
 208 }
 209
 210 static HRESULT Object_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 211         jsval_t *r)
 212 {
 213     TRACE("\n");
 214
 215     switch(flags) {
 216     case INVOKE_FUNC:
 217         return throw_type_error(ctx, JS_E_FUNCTION_EXPECTED, NULL);
 218     case DISPATCH_PROPERTYGET: {
 219         jsstr_t *ret = jsstr_alloc(default_valueW);
 220         if(!ret)
 221             return E_OUTOFMEMORY;
 222         *r = jsval_string(ret);
 223         break;
 224     }
 225     default:
 226         FIXME("unimplemented flags %x\n", flags);
 227         return E_NOTIMPL;
 228     }
 229
 230     return S_OK;
 231 }
 232
 233 static void Object_destructor(jsdisp_t *dispex)
 234 {
 235     heap_free(dispex);
 236 }
 237
 238 static const builtin_prop_t Object_props[] = {
 239     {hasOwnPropertyW,        Object_hasOwnProperty,        PROPF_METHOD|1},
 240     {isPrototypeOfW,         Object_isPrototypeOf,         PROPF_METHOD|1},
 241     {propertyIsEnumerableW,  Object_propertyIsEnumerable,  PROPF_METHOD|1},
 242     {toLocaleStringW,        Object_toLocaleString,        PROPF_METHOD},
 243     {toStringW,              Object_toString,              PROPF_METHOD},
 244     {valueOfW,               Object_valueOf,               PROPF_METHOD}
 245 };
 246
 247 static const builtin_info_t Object_info = {
 248     JSCLASS_OBJECT,
 249     {NULL, Object_value, 0},
 250     sizeof(Object_props)/sizeof(*Object_props),
 251     Object_props,
 252     Object_destructor,
 253     NULL
 254 };
 255
 256 static const builtin_info_t ObjectInst_info = {
 257     JSCLASS_OBJECT,
 258     {NULL, Object_value, 0},
 259     0, NULL,
 260     Object_destructor,
 261     NULL
 262 };
 263
 264 static HRESULT ObjectConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 265         jsval_t *r)
 266 {
 267     HRESULT hres;
 268
 269     TRACE("\n");
 270
 271     switch(flags) {
 272     case DISPATCH_METHOD:
 273         if(argc) {
 274             if(!is_undefined(argv[0]) && !is_null(argv[0]) && (!is_object_instance(argv[0]) || get_object(argv[0]))) {
 275                 IDispatch *disp;
 276
 277                 hres = to_object(ctx, argv[0], &disp);
 278                 if(FAILED(hres))
 279                     return hres;
 280
 281                 if(r)
 282                     *r = jsval_disp(disp);
 283                 else
 284                     IDispatch_Release(disp);
 285                 return S_OK;
 286             }
 287         }
 288         /* fall through */
 289     case DISPATCH_CONSTRUCT: {
 290         jsdisp_t *obj;
 291
 292         hres = create_object(ctx, NULL, &obj);
 293         if(FAILED(hres))
 294             return hres;
 295
 296         if(r)
 297             *r = jsval_obj(obj);
 298         else
 299             jsdisp_release(obj);
 300         break;
 301     }
 302
 303     default:
 304         FIXME("unimplemented flags: %x\n", flags);
 305         return E_NOTIMPL;
 306     }
 307
 308     return S_OK;
 309 }
 310
 311 HRESULT create_object_constr(script_ctx_t *ctx, jsdisp_t *object_prototype, jsdisp_t **ret)
 312 {
 313     static const WCHAR ObjectW[] = {'O','b','j','e','c','t',0};
 314
 315     return create_builtin_constructor(ctx, ObjectConstr_value, ObjectW, NULL, PROPF_CONSTR,
 316             object_prototype, ret);
 317 }
 318
 319 HRESULT create_object_prototype(script_ctx_t *ctx, jsdisp_t **ret)
 320 {
 321     return create_dispex(ctx, &Object_info, NULL, ret);
 322 }
 323
 324 HRESULT create_object(script_ctx_t *ctx, jsdisp_t *constr, jsdisp_t **ret)
 325 {
 326     jsdisp_t *object;
 327     HRESULT hres;
 328
 329     object = heap_alloc_zero(sizeof(jsdisp_t));
 330     if(!object)
 331         return E_OUTOFMEMORY;
 332
 333     hres = init_dispex_from_constr(object, ctx, &ObjectInst_info, constr ? constr : ctx->object_constr);
 334     if(FAILED(hres)) {
 335         heap_free(object);
 336         return hres;
 337     }
 338
 339     *ret = object;
 340     return S_OK;
 341 }