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