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, VARIANT *argv,
  36         VARIANT *retv, jsexcept_t *ei)
  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(retv) {
  70         V_VT(retv) = VT_BSTR;
  71         V_BSTR(retv) = SysAllocStringLen(NULL, 9+strlenW(str));
  72         if(!V_BSTR(retv))
  73             return E_OUTOFMEMORY;
  74
  75         sprintfW(V_BSTR(retv), formatW, str);
  76     }
  77
  78     return S_OK;
  79 }
  80
  81 static HRESULT Object_toLocaleString(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, VARIANT *argv,
  82         VARIANT *retv, jsexcept_t *ei)
  83 {
  84     TRACE("\n");
  85
  86     if(!is_jsdisp(jsthis)) {
  87         FIXME("Host object this\n");
  88         return E_FAIL;
  89     }
  90
  91     return jsdisp_call_name(jsthis->u.jsdisp, toStringW, DISPATCH_METHOD, 0, NULL, retv, ei);
  92 }
  93
  94 static HRESULT Object_valueOf(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, VARIANT *argv,
  95         VARIANT *retv, jsexcept_t *ei)
  96 {
  97     TRACE("\n");
  98
  99     if(retv) {
 100         IDispatch_AddRef(jsthis->u.disp);
 101
 102         V_VT(retv) = VT_DISPATCH;
 103         V_DISPATCH(retv) = jsthis->u.disp;
 104     }
 105
 106     return S_OK;
 107 }
 108
 109 static HRESULT Object_hasOwnProperty(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, VARIANT *argv,
 110         VARIANT *retv, jsexcept_t *ei)
 111 {
 112     BSTR name;
 113     DISPID id;
 114     HRESULT hres;
 115
 116     TRACE("\n");
 117
 118     if(!argc) {
 119         if(retv) {
 120             V_VT(retv) = VT_BOOL;
 121             V_BOOL(retv) = VARIANT_FALSE;
 122         }
 123
 124         return S_OK;
 125     }
 126
 127     hres = to_string(ctx, argv, ei, &name);
 128     if(FAILED(hres))
 129         return hres;
 130
 131     if(is_jsdisp(jsthis)) {
 132         VARIANT_BOOL result;
 133
 134         hres = jsdisp_is_own_prop(jsthis->u.jsdisp, name, &result);
 135         if(FAILED(hres))
 136             return hres;
 137
 138         if(retv) {
 139             V_VT(retv) = VT_BOOL;
 140             V_BOOL(retv) = result;
 141         }
 142
 143         return S_OK;
 144     }
 145
 146     if(is_dispex(jsthis)) {
 147         hres = IDispatchEx_GetDispID(jsthis->u.dispex, name,
 148                 make_grfdex(ctx, fdexNameCaseSensitive), &id);
 149     } else {
 150         hres = IDispatch_GetIDsOfNames(jsthis->u.disp, &IID_NULL,
 151                 &name, 1, ctx->lcid, &id);
 152     }
 153
 154     if(retv) {
 155         V_VT(retv) = VT_BOOL;
 156         V_BOOL(retv) = SUCCEEDED(hres) ? VARIANT_TRUE : VARIANT_FALSE;
 157     }
 158     return S_OK;
 159 }
 160
 161 static HRESULT Object_propertyIsEnumerable(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, VARIANT *argv,
 162         VARIANT *retv, jsexcept_t *ei)
 163 {
 164     FIXME("\n");
 165     return E_NOTIMPL;
 166 }
 167
 168 static HRESULT Object_isPrototypeOf(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, VARIANT *argv,
 169         VARIANT *retv, jsexcept_t *ei)
 170 {
 171     FIXME("\n");
 172     return E_NOTIMPL;
 173 }
 174
 175 static HRESULT Object_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, VARIANT *argv,
 176         VARIANT *retv, jsexcept_t *ei)
 177 {
 178     TRACE("\n");
 179
 180     switch(flags) {
 181     case INVOKE_FUNC:
 182         return throw_type_error(ctx, ei, JS_E_FUNCTION_EXPECTED, NULL);
 183     case DISPATCH_PROPERTYGET:
 184         V_VT(retv) = VT_BSTR;
 185         V_BSTR(retv) = SysAllocString(default_valueW);
 186         if(!V_BSTR(retv))
 187             return E_OUTOFMEMORY;
 188         break;
 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, VARIANT *argv,
 229         VARIANT *retv, jsexcept_t *ei)
 230 {
 231     HRESULT hres;
 232
 233     TRACE("\n");
 234
 235     switch(flags) {
 236     case DISPATCH_METHOD:
 237         if(argc) {
 238             if(V_VT(argv) != VT_EMPTY && V_VT(argv) != VT_NULL && (V_VT(argv) != VT_DISPATCH || V_DISPATCH(argv))) {
 239                 IDispatch *disp;
 240
 241                 hres = to_object(ctx, argv, &disp);
 242                 if(FAILED(hres))
 243                     return hres;
 244
 245                 if(retv) {
 246                     V_VT(retv) = VT_DISPATCH;
 247                     V_DISPATCH(retv) = disp;
 248                 }else {
 249                     IDispatch_Release(disp);
 250                 }
 251                 return S_OK;
 252             }
 253         }
 254         /* fall through */
 255     case DISPATCH_CONSTRUCT: {
 256         jsdisp_t *obj;
 257
 258         hres = create_object(ctx, NULL, &obj);
 259         if(FAILED(hres))
 260             return hres;
 261
 262         if(retv)
 263             var_set_jsdisp(retv, obj);
 264         else
 265             jsdisp_release(obj);
 266         break;
 267     }
 268
 269     default:
 270         FIXME("unimplemented flags: %x\n", flags);
 271         return E_NOTIMPL;
 272     }
 273
 274     return S_OK;
 275 }
 276
 277 HRESULT create_object_constr(script_ctx_t *ctx, jsdisp_t *object_prototype, jsdisp_t **ret)
 278 {
 279     static const WCHAR ObjectW[] = {'O','b','j','e','c','t',0};
 280
 281     return create_builtin_constructor(ctx, ObjectConstr_value, ObjectW, NULL, PROPF_CONSTR,
 282             object_prototype, ret);
 283 }
 284
 285 HRESULT create_object_prototype(script_ctx_t *ctx, jsdisp_t **ret)
 286 {
 287     return create_dispex(ctx, &Object_info, NULL, ret);
 288 }
 289
 290 HRESULT create_object(script_ctx_t *ctx, jsdisp_t *constr, jsdisp_t **ret)
 291 {
 292     jsdisp_t *object;
 293     HRESULT hres;
 294
 295     object = heap_alloc_zero(sizeof(jsdisp_t));
 296     if(!object)
 297         return E_OUTOFMEMORY;
 298
 299     hres = init_dispex_from_constr(object, ctx, &ObjectInst_info, constr ? constr : ctx->object_constr);
 300     if(FAILED(hres)) {
 301         heap_free(object);
 302         return hres;
 303     }
 304
 305     *ret = object;
 306     return S_OK;
 307 }