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 <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
  75         ret = jsstr_alloc_buf(9+strlenW(str));
  76         if(!ret)
  77             return E_OUTOFMEMORY;
  78
  79         sprintfW(ret->str, formatW, str);
  80         *r = jsval_string(ret);
  81     }
  82
  83     return S_OK;
  84 }
  85
  86 static HRESULT Object_toLocaleString(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
  87         jsval_t *r)
  88 {
  89     TRACE("\n");
  90
  91     if(!is_jsdisp(jsthis)) {
  92         FIXME("Host object this\n");
  93         return E_FAIL;
  94     }
  95
  96     return jsdisp_call_name(jsthis->u.jsdisp, toStringW, DISPATCH_METHOD, 0, NULL, r);
  97 }
  98
  99 static HRESULT Object_valueOf(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 100         jsval_t *r)
 101 {
 102     TRACE("\n");
 103
 104     if(r) {
 105         IDispatch_AddRef(jsthis->u.disp);
 106         *r = jsval_disp(jsthis->u.disp);
 107     }
 108     return S_OK;
 109 }
 110
 111 static HRESULT Object_hasOwnProperty(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 112         jsval_t *r)
 113 {
 114     jsstr_t *name;
 115     DISPID id;
 116     HRESULT hres;
 117
 118     TRACE("\n");
 119
 120     if(!argc) {
 121         if(r)
 122             *r = jsval_bool(FALSE);
 123         return S_OK;
 124     }
 125
 126     hres = to_string(ctx, argv[0], &name);
 127     if(FAILED(hres))
 128         return hres;
 129
 130     if(is_jsdisp(jsthis)) {
 131         BOOL result;
 132
 133         hres = jsdisp_is_own_prop(jsthis->u.jsdisp, name->str, &result);
 134         if(FAILED(hres))
 135             return hres;
 136
 137         if(r)
 138             *r = jsval_bool(result);
 139         return S_OK;
 140     }
 141
 142     if(is_dispex(jsthis)) {
 143         BSTR bstr;
 144
 145         bstr = SysAllocStringLen(name->str, jsstr_length(name));
 146         if(!bstr)
 147             return E_OUTOFMEMORY;
 148
 149         hres = IDispatchEx_GetDispID(jsthis->u.dispex, bstr,
 150                 make_grfdex(ctx, fdexNameCaseSensitive), &id);
 151         SysFreeString(bstr);
 152     } else {
 153         OLECHAR *names = name->str;
 154         hres = IDispatch_GetIDsOfNames(jsthis->u.disp, &IID_NULL,
 155                 &names, 1, ctx->lcid, &id);
 156     }
 157
 158     if(r)
 159         *r = jsval_bool(SUCCEEDED(hres));
 160     return S_OK;
 161 }
 162
 163 static HRESULT Object_propertyIsEnumerable(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 164         jsval_t *r)
 165 {
 166     jsstr_t *name;
 167     BOOL ret;
 168     HRESULT hres;
 169
 170     TRACE("\n");
 171
 172     if(argc != 1) {
 173         FIXME("argc %d not supported\n", argc);
 174         return E_NOTIMPL;
 175     }
 176
 177     if(!is_jsdisp(jsthis)) {
 178         FIXME("Host object this\n");
 179         return E_FAIL;
 180     }
 181
 182     hres = to_string(ctx, argv[0], &name);
 183     if(FAILED(hres))
 184         return hres;
 185
 186     hres = jsdisp_is_enumerable(jsthis->u.jsdisp, name->str, &ret);
 187     jsstr_release(name);
 188     if(FAILED(hres))
 189         return hres;
 190
 191     if(r)
 192         *r = jsval_bool(ret);
 193     return S_OK;
 194 }
 195
 196 static HRESULT Object_isPrototypeOf(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 197         jsval_t *r)
 198 {
 199     FIXME("\n");
 200     return E_NOTIMPL;
 201 }
 202
 203 static HRESULT Object_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 204         jsval_t *r)
 205 {
 206     TRACE("\n");
 207
 208     switch(flags) {
 209     case INVOKE_FUNC:
 210         return throw_type_error(ctx, JS_E_FUNCTION_EXPECTED, NULL);
 211     case DISPATCH_PROPERTYGET: {
 212         jsstr_t *ret = jsstr_alloc(default_valueW);
 213         if(!ret)
 214             return E_OUTOFMEMORY;
 215         *r = jsval_string(ret);
 216         break;
 217     }
 218     default:
 219         FIXME("unimplemented flags %x\n", flags);
 220         return E_NOTIMPL;
 221     }
 222
 223     return S_OK;
 224 }
 225
 226 static void Object_destructor(jsdisp_t *dispex)
 227 {
 228     heap_free(dispex);
 229 }
 230
 231 static const builtin_prop_t Object_props[] = {
 232     {hasOwnPropertyW,        Object_hasOwnProperty,        PROPF_METHOD|1},
 233     {isPrototypeOfW,         Object_isPrototypeOf,         PROPF_METHOD|1},
 234     {propertyIsEnumerableW,  Object_propertyIsEnumerable,  PROPF_METHOD|1},
 235     {toLocaleStringW,        Object_toLocaleString,        PROPF_METHOD},
 236     {toStringW,              Object_toString,              PROPF_METHOD},
 237     {valueOfW,               Object_valueOf,               PROPF_METHOD}
 238 };
 239
 240 static const builtin_info_t Object_info = {
 241     JSCLASS_OBJECT,
 242     {NULL, Object_value, 0},
 243     sizeof(Object_props)/sizeof(*Object_props),
 244     Object_props,
 245     Object_destructor,
 246     NULL
 247 };
 248
 249 static const builtin_info_t ObjectInst_info = {
 250     JSCLASS_OBJECT,
 251     {NULL, Object_value, 0},
 252     0, NULL,
 253     Object_destructor,
 254     NULL
 255 };
 256
 257 static HRESULT ObjectConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 258         jsval_t *r)
 259 {
 260     HRESULT hres;
 261
 262     TRACE("\n");
 263
 264     switch(flags) {
 265     case DISPATCH_METHOD:
 266         if(argc) {
 267             if(!is_undefined(argv[0]) && !is_null(argv[0]) && (!is_object_instance(argv[0]) || get_object(argv[0]))) {
 268                 IDispatch *disp;
 269
 270                 hres = to_object(ctx, argv[0], &disp);
 271                 if(FAILED(hres))
 272                     return hres;
 273
 274                 if(r)
 275                     *r = jsval_disp(disp);
 276                 else
 277                     IDispatch_Release(disp);
 278                 return S_OK;
 279             }
 280         }
 281         /* fall through */
 282     case DISPATCH_CONSTRUCT: {
 283         jsdisp_t *obj;
 284
 285         hres = create_object(ctx, NULL, &obj);
 286         if(FAILED(hres))
 287             return hres;
 288
 289         if(r)
 290             *r = jsval_obj(obj);
 291         else
 292             jsdisp_release(obj);
 293         break;
 294     }
 295
 296     default:
 297         FIXME("unimplemented flags: %x\n", flags);
 298         return E_NOTIMPL;
 299     }
 300
 301     return S_OK;
 302 }
 303
 304 HRESULT create_object_constr(script_ctx_t *ctx, jsdisp_t *object_prototype, jsdisp_t **ret)
 305 {
 306     static const WCHAR ObjectW[] = {'O','b','j','e','c','t',0};
 307
 308     return create_builtin_constructor(ctx, ObjectConstr_value, ObjectW, NULL, PROPF_CONSTR,
 309             object_prototype, ret);
 310 }
 311
 312 HRESULT create_object_prototype(script_ctx_t *ctx, jsdisp_t **ret)
 313 {
 314     return create_dispex(ctx, &Object_info, NULL, ret);
 315 }
 316
 317 HRESULT create_object(script_ctx_t *ctx, jsdisp_t *constr, jsdisp_t **ret)
 318 {
 319     jsdisp_t *object;
 320     HRESULT hres;
 321
 322     object = heap_alloc_zero(sizeof(jsdisp_t));
 323     if(!object)
 324         return E_OUTOFMEMORY;
 325
 326     hres = init_dispex_from_constr(object, ctx, &ObjectInst_info, constr ? constr : ctx->object_constr);
 327     if(FAILED(hres)) {
 328         heap_free(object);
 329         return hres;
 330     }
 331
 332     *ret = object;
 333     return S_OK;
 334 }