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     BOOL result;
 114     DISPID id;
 115     HRESULT hres;
 116
 117     TRACE("\n");
 118
 119     if(!argc) {
 120         if(retv) {
 121             V_VT(retv) = VT_BOOL;
 122             V_BOOL(retv) = VARIANT_FALSE;
 123         }
 124
 125         return S_OK;
 126     }
 127
 128     hres = to_string(ctx, argv, ei, &name);
 129     if(FAILED(hres))
 130         return hres;
 131
 132     if(is_jsdisp(jsthis)) {
 133         result = jsdisp_is_own_prop(jsthis->u.jsdisp, name);
 134         if(retv) {
 135             V_VT(retv) = VT_BOOL;
 136             V_BOOL(retv) = result;
 137         }
 138
 139         return S_OK;
 140     } else if(is_dispex(jsthis)) {
 141         hres = IDispatchEx_GetDispID(jsthis->u.dispex, name,
 142                 make_grfdex(ctx, fdexNameCaseSensitive), &id);
 143     } else {
 144         hres = IDispatch_GetIDsOfNames(jsthis->u.disp, &IID_NULL,
 145                 &name, 1, ctx->lcid, &id);
 146     }
 147
 148     if(retv) {
 149         V_VT(retv) = VT_BOOL;
 150         V_BOOL(retv) = SUCCEEDED(hres) ? VARIANT_TRUE : VARIANT_FALSE;
 151     }
 152     return S_OK;
 153 }
 154
 155 static HRESULT Object_propertyIsEnumerable(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, VARIANT *argv,
 156         VARIANT *retv, jsexcept_t *ei)
 157 {
 158     FIXME("\n");
 159     return E_NOTIMPL;
 160 }
 161
 162 static HRESULT Object_isPrototypeOf(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, VARIANT *argv,
 163         VARIANT *retv, jsexcept_t *ei)
 164 {
 165     FIXME("\n");
 166     return E_NOTIMPL;
 167 }
 168
 169 static HRESULT Object_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, VARIANT *argv,
 170         VARIANT *retv, jsexcept_t *ei)
 171 {
 172     TRACE("\n");
 173
 174     switch(flags) {
 175     case INVOKE_FUNC:
 176         return throw_type_error(ctx, ei, JS_E_FUNCTION_EXPECTED, NULL);
 177     case DISPATCH_PROPERTYGET:
 178         V_VT(retv) = VT_BSTR;
 179         V_BSTR(retv) = SysAllocString(default_valueW);
 180         if(!V_BSTR(retv))
 181             return E_OUTOFMEMORY;
 182         break;
 183     default:
 184         FIXME("unimplemented flags %x\n", flags);
 185         return E_NOTIMPL;
 186     }
 187
 188     return S_OK;
 189 }
 190
 191 static void Object_destructor(jsdisp_t *dispex)
 192 {
 193     heap_free(dispex);
 194 }
 195
 196 static const builtin_prop_t Object_props[] = {
 197     {hasOwnPropertyW,        Object_hasOwnProperty,        PROPF_METHOD|1},
 198     {isPrototypeOfW,         Object_isPrototypeOf,         PROPF_METHOD|1},
 199     {propertyIsEnumerableW,  Object_propertyIsEnumerable,  PROPF_METHOD|1},
 200     {toLocaleStringW,        Object_toLocaleString,        PROPF_METHOD},
 201     {toStringW,              Object_toString,              PROPF_METHOD},
 202     {valueOfW,               Object_valueOf,               PROPF_METHOD}
 203 };
 204
 205 static const builtin_info_t Object_info = {
 206     JSCLASS_OBJECT,
 207     {NULL, Object_value, 0},
 208     sizeof(Object_props)/sizeof(*Object_props),
 209     Object_props,
 210     Object_destructor,
 211     NULL
 212 };
 213
 214 static HRESULT ObjectConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, VARIANT *argv,
 215         VARIANT *retv, jsexcept_t *ei)
 216 {
 217     HRESULT hres;
 218
 219     TRACE("\n");
 220
 221     switch(flags) {
 222     case DISPATCH_METHOD:
 223         if(argc) {
 224             if(V_VT(argv) != VT_EMPTY && V_VT(argv) != VT_NULL && (V_VT(argv) != VT_DISPATCH || V_DISPATCH(argv))) {
 225                 IDispatch *disp;
 226
 227                 hres = to_object(ctx, argv, &disp);
 228                 if(FAILED(hres))
 229                     return hres;
 230
 231                 if(retv) {
 232                     V_VT(retv) = VT_DISPATCH;
 233                     V_DISPATCH(retv) = disp;
 234                 }else {
 235                     IDispatch_Release(disp);
 236                 }
 237                 return S_OK;
 238             }
 239         }
 240         /* fall through */
 241     case DISPATCH_CONSTRUCT: {
 242         jsdisp_t *obj;
 243
 244         hres = create_object(ctx, NULL, &obj);
 245         if(FAILED(hres))
 246             return hres;
 247
 248         if(retv)
 249             var_set_jsdisp(retv, obj);
 250         else
 251             jsdisp_release(obj);
 252         break;
 253     }
 254
 255     default:
 256         FIXME("unimplemented flags: %x\n", flags);
 257         return E_NOTIMPL;
 258     }
 259
 260     return S_OK;
 261 }
 262
 263 HRESULT create_object_constr(script_ctx_t *ctx, jsdisp_t *object_prototype, jsdisp_t **ret)
 264 {
 265     static const WCHAR ObjectW[] = {'O','b','j','e','c','t',0};
 266
 267     return create_builtin_function(ctx, ObjectConstr_value, ObjectW, NULL, PROPF_CONSTR,
 268             object_prototype, ret);
 269 }
 270
 271 HRESULT create_object_prototype(script_ctx_t *ctx, jsdisp_t **ret)
 272 {
 273     return create_dispex(ctx, &Object_info, NULL, ret);
 274 }
 275
 276 HRESULT create_object(script_ctx_t *ctx, jsdisp_t *constr, jsdisp_t **ret)
 277 {
 278     jsdisp_t *object;
 279     HRESULT hres;
 280
 281     object = heap_alloc_zero(sizeof(jsdisp_t));
 282     if(!object)
 283         return E_OUTOFMEMORY;
 284
 285     hres = init_dispex_from_constr(object, ctx, &Object_info, constr ? constr : ctx->object_constr);
 286     if(FAILED(hres)) {
 287         heap_free(object);
 288         return hres;
 289     }
 290
 291     *ret = object;
 292     return S_OK;
 293 }