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         jsval_t *r, 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(r) {
  70         BSTR ret = SysAllocStringLen(NULL, 9+strlenW(str));
  71         if(!ret)
  72             return E_OUTOFMEMORY;
  73
  74         sprintfW(ret, formatW, str);
  75         *r = jsval_string(ret);
  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         jsval_t *r, 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, r, ei);
  92 }
  93
  94 static HRESULT Object_valueOf(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, VARIANT *argv,
  95         jsval_t *r, jsexcept_t *ei)
  96 {
  97     TRACE("\n");
  98
  99     if(r) {
 100         IDispatch_AddRef(jsthis->u.disp);
 101         *r = jsval_disp(jsthis->u.disp);
 102     }
 103     return S_OK;
 104 }
 105
 106 static HRESULT Object_hasOwnProperty(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, VARIANT *argv,
 107         jsval_t *r, jsexcept_t *ei)
 108 {
 109     BSTR name;
 110     DISPID id;
 111     HRESULT hres;
 112
 113     TRACE("\n");
 114
 115     if(!argc) {
 116         if(r)
 117             *r = jsval_bool(FALSE);
 118         return S_OK;
 119     }
 120
 121     hres = to_string(ctx, argv, ei, &name);
 122     if(FAILED(hres))
 123         return hres;
 124
 125     if(is_jsdisp(jsthis)) {
 126         VARIANT_BOOL result;
 127
 128         hres = jsdisp_is_own_prop(jsthis->u.jsdisp, name, &result);
 129         if(FAILED(hres))
 130             return hres;
 131
 132         if(r)
 133             *r = jsval_bool(result);
 134         return S_OK;
 135     }
 136
 137     if(is_dispex(jsthis)) {
 138         hres = IDispatchEx_GetDispID(jsthis->u.dispex, name,
 139                 make_grfdex(ctx, fdexNameCaseSensitive), &id);
 140     } else {
 141         hres = IDispatch_GetIDsOfNames(jsthis->u.disp, &IID_NULL,
 142                 &name, 1, ctx->lcid, &id);
 143     }
 144
 145     if(r)
 146         *r = jsval_bool(SUCCEEDED(hres));
 147     return S_OK;
 148 }
 149
 150 static HRESULT Object_propertyIsEnumerable(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, VARIANT *argv,
 151         jsval_t *r, jsexcept_t *ei)
 152 {
 153     FIXME("\n");
 154     return E_NOTIMPL;
 155 }
 156
 157 static HRESULT Object_isPrototypeOf(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, VARIANT *argv,
 158         jsval_t *r, jsexcept_t *ei)
 159 {
 160     FIXME("\n");
 161     return E_NOTIMPL;
 162 }
 163
 164 static HRESULT Object_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, VARIANT *argv,
 165         jsval_t *r, jsexcept_t *ei)
 166 {
 167     TRACE("\n");
 168
 169     switch(flags) {
 170     case INVOKE_FUNC:
 171         return throw_type_error(ctx, ei, JS_E_FUNCTION_EXPECTED, NULL);
 172     case DISPATCH_PROPERTYGET: {
 173         BSTR ret = SysAllocString(default_valueW);
 174         if(!ret)
 175             return E_OUTOFMEMORY;
 176         *r = jsval_string(ret);
 177         break;
 178     }
 179     default:
 180         FIXME("unimplemented flags %x\n", flags);
 181         return E_NOTIMPL;
 182     }
 183
 184     return S_OK;
 185 }
 186
 187 static void Object_destructor(jsdisp_t *dispex)
 188 {
 189     heap_free(dispex);
 190 }
 191
 192 static const builtin_prop_t Object_props[] = {
 193     {hasOwnPropertyW,        Object_hasOwnProperty,        PROPF_METHOD|1},
 194     {isPrototypeOfW,         Object_isPrototypeOf,         PROPF_METHOD|1},
 195     {propertyIsEnumerableW,  Object_propertyIsEnumerable,  PROPF_METHOD|1},
 196     {toLocaleStringW,        Object_toLocaleString,        PROPF_METHOD},
 197     {toStringW,              Object_toString,              PROPF_METHOD},
 198     {valueOfW,               Object_valueOf,               PROPF_METHOD}
 199 };
 200
 201 static const builtin_info_t Object_info = {
 202     JSCLASS_OBJECT,
 203     {NULL, Object_value, 0},
 204     sizeof(Object_props)/sizeof(*Object_props),
 205     Object_props,
 206     Object_destructor,
 207     NULL
 208 };
 209
 210 static const builtin_info_t ObjectInst_info = {
 211     JSCLASS_OBJECT,
 212     {NULL, Object_value, 0},
 213     0, NULL,
 214     Object_destructor,
 215     NULL
 216 };
 217
 218 static HRESULT ObjectConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, VARIANT *argv,
 219         jsval_t *r, jsexcept_t *ei)
 220 {
 221     HRESULT hres;
 222
 223     TRACE("\n");
 224
 225     switch(flags) {
 226     case DISPATCH_METHOD:
 227         if(argc) {
 228             if(V_VT(argv) != VT_EMPTY && V_VT(argv) != VT_NULL && (V_VT(argv) != VT_DISPATCH || V_DISPATCH(argv))) {
 229                 IDispatch *disp;
 230
 231                 hres = to_object(ctx, argv, &disp);
 232                 if(FAILED(hres))
 233                     return hres;
 234
 235                 if(r)
 236                     *r = jsval_disp(disp);
 237                 else
 238                     IDispatch_Release(disp);
 239                 return S_OK;
 240             }
 241         }
 242         /* fall through */
 243     case DISPATCH_CONSTRUCT: {
 244         jsdisp_t *obj;
 245
 246         hres = create_object(ctx, NULL, &obj);
 247         if(FAILED(hres))
 248             return hres;
 249
 250         if(r)
 251             *r = jsval_obj(obj);
 252         else
 253             jsdisp_release(obj);
 254         break;
 255     }
 256
 257     default:
 258         FIXME("unimplemented flags: %x\n", flags);
 259         return E_NOTIMPL;
 260     }
 261
 262     return S_OK;
 263 }
 264
 265 HRESULT create_object_constr(script_ctx_t *ctx, jsdisp_t *object_prototype, jsdisp_t **ret)
 266 {
 267     static const WCHAR ObjectW[] = {'O','b','j','e','c','t',0};
 268
 269     return create_builtin_constructor(ctx, ObjectConstr_value, ObjectW, NULL, PROPF_CONSTR,
 270             object_prototype, ret);
 271 }
 272
 273 HRESULT create_object_prototype(script_ctx_t *ctx, jsdisp_t **ret)
 274 {
 275     return create_dispex(ctx, &Object_info, NULL, ret);
 276 }
 277
 278 HRESULT create_object(script_ctx_t *ctx, jsdisp_t *constr, jsdisp_t **ret)
 279 {
 280     jsdisp_t *object;
 281     HRESULT hres;
 282
 283     object = heap_alloc_zero(sizeof(jsdisp_t));
 284     if(!object)
 285         return E_OUTOFMEMORY;
 286
 287     hres = init_dispex_from_constr(object, ctx, &ObjectInst_info, constr ? constr : ctx->object_constr);
 288     if(FAILED(hres)) {
 289         heap_free(object);
 290         return hres;
 291     }
 292
 293     *ret = object;
 294     return S_OK;
 295 }