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, DISPPARAMS *dp,
  36         VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
  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, DISPPARAMS *dp,
  82         VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
  83 {
  84     DISPPARAMS params = {NULL, NULL, 0, 0};
  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, &params, retv, ei, sp);
  94 }
  95
  96 static HRESULT Object_valueOf(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
  97         VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
  98 {
  99     TRACE("\n");
 100
 101     if(retv) {
 102         IDispatch_AddRef(jsthis->u.disp);
 103
 104         V_VT(retv) = VT_DISPATCH;
 105         V_DISPATCH(retv) = jsthis->u.disp;
 106     }
 107
 108     return S_OK;
 109 }
 110
 111 static HRESULT Object_hasOwnProperty(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
 112         VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
 113 {
 114     FIXME("\n");
 115     return E_NOTIMPL;
 116 }
 117
 118 static HRESULT Object_propertyIsEnumerable(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
 119         VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
 120 {
 121     FIXME("\n");
 122     return E_NOTIMPL;
 123 }
 124
 125 static HRESULT Object_isPrototypeOf(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
 126         VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
 127 {
 128     FIXME("\n");
 129     return E_NOTIMPL;
 130 }
 131
 132 static HRESULT Object_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
 133         VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
 134 {
 135     TRACE("\n");
 136
 137     switch(flags) {
 138     case INVOKE_FUNC:
 139         return throw_type_error(ctx, ei, JS_E_FUNCTION_EXPECTED, NULL);
 140     case DISPATCH_PROPERTYGET:
 141         V_VT(retv) = VT_BSTR;
 142         V_BSTR(retv) = SysAllocString(default_valueW);
 143         if(!V_BSTR(retv))
 144             return E_OUTOFMEMORY;
 145         break;
 146     default:
 147         FIXME("unimplemented flags %x\n", flags);
 148         return E_NOTIMPL;
 149     }
 150
 151     return S_OK;
 152 }
 153
 154 static void Object_destructor(jsdisp_t *dispex)
 155 {
 156     heap_free(dispex);
 157 }
 158
 159 static const builtin_prop_t Object_props[] = {
 160     {hasOwnPropertyW,        Object_hasOwnProperty,        PROPF_METHOD|1},
 161     {isPrototypeOfW,         Object_isPrototypeOf,         PROPF_METHOD|1},
 162     {propertyIsEnumerableW,  Object_propertyIsEnumerable,  PROPF_METHOD|1},
 163     {toLocaleStringW,        Object_toLocaleString,        PROPF_METHOD},
 164     {toStringW,              Object_toString,              PROPF_METHOD},
 165     {valueOfW,               Object_valueOf,               PROPF_METHOD}
 166 };
 167
 168 static const builtin_info_t Object_info = {
 169     JSCLASS_OBJECT,
 170     {NULL, Object_value, 0},
 171     sizeof(Object_props)/sizeof(*Object_props),
 172     Object_props,
 173     Object_destructor,
 174     NULL
 175 };
 176
 177 static HRESULT ObjectConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
 178         VARIANT *retv, jsexcept_t *ei, IServiceProvider *caller)
 179 {
 180     HRESULT hres;
 181
 182     TRACE("\n");
 183
 184     switch(flags) {
 185     case DISPATCH_METHOD:
 186         if(arg_cnt(dp)) {
 187             VARIANT *arg = get_arg(dp,0);
 188
 189             if(V_VT(arg) != VT_EMPTY && V_VT(arg) != VT_NULL && (V_VT(arg) != VT_DISPATCH || V_DISPATCH(arg))) {
 190                 IDispatch *disp;
 191
 192                 hres = to_object(ctx, arg, &disp);
 193                 if(FAILED(hres))
 194                     return hres;
 195
 196                 if(retv) {
 197                     V_VT(retv) = VT_DISPATCH;
 198                     V_DISPATCH(retv) = disp;
 199                 }else {
 200                     IDispatch_Release(disp);
 201                 }
 202                 return S_OK;
 203             }
 204         }
 205         /* fall through */
 206     case DISPATCH_CONSTRUCT: {
 207         jsdisp_t *obj;
 208
 209         hres = create_object(ctx, NULL, &obj);
 210         if(FAILED(hres))
 211             return hres;
 212
 213         if(retv)
 214             var_set_jsdisp(retv, obj);
 215         else
 216             jsdisp_release(obj);
 217         break;
 218     }
 219
 220     default:
 221         FIXME("unimplemented flags: %x\n", flags);
 222         return E_NOTIMPL;
 223     }
 224
 225     return S_OK;
 226 }
 227
 228 HRESULT create_object_constr(script_ctx_t *ctx, jsdisp_t *object_prototype, jsdisp_t **ret)
 229 {
 230     static const WCHAR ObjectW[] = {'O','b','j','e','c','t',0};
 231
 232     return create_builtin_function(ctx, ObjectConstr_value, ObjectW, NULL, PROPF_CONSTR,
 233             object_prototype, ret);
 234 }
 235
 236 HRESULT create_object_prototype(script_ctx_t *ctx, jsdisp_t **ret)
 237 {
 238     return create_dispex(ctx, &Object_info, NULL, ret);
 239 }
 240
 241 HRESULT create_object(script_ctx_t *ctx, jsdisp_t *constr, jsdisp_t **ret)
 242 {
 243     jsdisp_t *object;
 244     HRESULT hres;
 245
 246     object = heap_alloc_zero(sizeof(jsdisp_t));
 247     if(!object)
 248         return E_OUTOFMEMORY;
 249
 250     hres = init_dispex_from_constr(object, ctx, &Object_info, constr ? constr : ctx->object_constr);
 251     if(FAILED(hres)) {
 252         heap_free(object);
 253         return hres;
 254     }
 255
 256     *ret = object;
 257     return S_OK;
 258 }