jscript: Use jsval instead of VARIANT to pass arguments to builtin functions.
[wine] / 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, jsval_t *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, jsval_t *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, jsval_t *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, jsval_t *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_jsval(ctx, argv[0], 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, jsval_t *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, jsval_t *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, jsval_t *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, jsval_t *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(!is_undefined(argv[0]) && !is_null(argv[0]) && (!is_object_instance(argv[0]) || get_object(argv[0]))) {
229                 IDispatch *disp;
230
231                 hres = to_object_jsval(ctx, argv[0], &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 }