dlls/jscript/bool.c

   1 /*
   2  * Copyright 2008 Jacek Caban for CodeWeavers
   3  * Copyright 2009 Piotr Caban
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include "jscript.h"
  21
  22 #include "wine/debug.h"
  23
  24 WINE_DEFAULT_DEBUG_CHANNEL(jscript);
  25
  26 typedef struct {
  27     jsdisp_t dispex;
  28
  29     VARIANT_BOOL val;
  30 } BoolInstance;
  31
  32 static const WCHAR toStringW[] = {'t','o','S','t','r','i','n','g',0};
  33 static const WCHAR valueOfW[] = {'v','a','l','u','e','O','f',0};
  34
  35 static inline BoolInstance *bool_this(vdisp_t *jsthis)
  36 {
  37     return is_vclass(jsthis, JSCLASS_BOOLEAN) ? (BoolInstance*)jsthis->u.jsdisp : NULL;
  38 }
  39
  40 /* ECMA-262 3rd Edition    15.6.4.2 */
  41 static HRESULT Bool_toString(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, VARIANT *argv,
  42         VARIANT *retv, jsexcept_t *ei)
  43 {
  44     BoolInstance *bool;
  45
  46     static const WCHAR trueW[] = {'t','r','u','e',0};
  47     static const WCHAR falseW[] = {'f','a','l','s','e',0};
  48
  49     TRACE("\n");
  50
  51     if(!(bool = bool_this(jsthis)))
  52         return throw_type_error(ctx, ei, JS_E_BOOLEAN_EXPECTED, NULL);
  53
  54     if(retv) {
  55         BSTR val;
  56
  57         if(bool->val) val = SysAllocString(trueW);
  58         else val = SysAllocString(falseW);
  59
  60         if(!val)
  61             return E_OUTOFMEMORY;
  62
  63         V_VT(retv) = VT_BSTR;
  64         V_BSTR(retv) = val;
  65     }
  66
  67     return S_OK;
  68 }
  69
  70 /* ECMA-262 3rd Edition    15.6.4.3 */
  71 static HRESULT Bool_valueOf(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, VARIANT *argv,
  72         VARIANT *retv, jsexcept_t *ei)
  73 {
  74     BoolInstance *bool;
  75
  76     TRACE("\n");
  77
  78     if(!(bool = bool_this(jsthis)))
  79         return throw_type_error(ctx, ei, JS_E_BOOLEAN_EXPECTED, NULL);
  80
  81     if(retv) {
  82         V_VT(retv) = VT_BOOL;
  83         V_BOOL(retv) = bool->val;
  84     }
  85
  86     return S_OK;
  87 }
  88
  89 static HRESULT Bool_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, VARIANT *argv,
  90         VARIANT *retv, jsexcept_t *ei)
  91 {
  92     TRACE("\n");
  93
  94     switch(flags) {
  95     case INVOKE_FUNC:
  96         return throw_type_error(ctx, ei, JS_E_FUNCTION_EXPECTED, NULL);
  97     default:
  98         FIXME("unimplemented flags %x\n", flags);
  99         return E_NOTIMPL;
 100     }
 101
 102     return S_OK;
 103
 104 }
 105
 106 static const builtin_prop_t Bool_props[] = {
 107     {toStringW,              Bool_toString,             PROPF_METHOD},
 108     {valueOfW,               Bool_valueOf,              PROPF_METHOD}
 109 };
 110
 111 static const builtin_info_t Bool_info = {
 112     JSCLASS_BOOLEAN,
 113     {NULL, Bool_value, 0},
 114     sizeof(Bool_props)/sizeof(*Bool_props),
 115     Bool_props,
 116     NULL,
 117     NULL
 118 };
 119
 120 static const builtin_info_t BoolInst_info = {
 121     JSCLASS_BOOLEAN,
 122     {NULL, Bool_value, 0},
 123     0, NULL,
 124     NULL,
 125     NULL
 126 };
 127
 128 static HRESULT BoolConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, VARIANT *argv,
 129         VARIANT *retv, jsexcept_t *ei)
 130 {
 131     HRESULT hres;
 132     VARIANT_BOOL value = VARIANT_FALSE;
 133
 134     if(argc) {
 135         hres = to_boolean(argv, &value);
 136         if(FAILED(hres))
 137             return hres;
 138     }
 139
 140     switch(flags) {
 141     case DISPATCH_CONSTRUCT: {
 142         jsdisp_t *bool;
 143
 144         hres = create_bool(ctx, value, &bool);
 145         if(FAILED(hres))
 146             return hres;
 147
 148         var_set_jsdisp(retv, bool);
 149         return S_OK;
 150     }
 151
 152     case INVOKE_FUNC:
 153         if(retv) {
 154             V_VT(retv) = VT_BOOL;
 155             V_BOOL(retv) = value;
 156         }
 157         return S_OK;
 158
 159     default:
 160         FIXME("unimplemented flags %x\n", flags);
 161         return E_NOTIMPL;
 162     }
 163
 164     return S_OK;
 165 }
 166
 167 static HRESULT alloc_bool(script_ctx_t *ctx, jsdisp_t *object_prototype, BoolInstance **ret)
 168 {
 169     BoolInstance *bool;
 170     HRESULT hres;
 171
 172     bool = heap_alloc_zero(sizeof(BoolInstance));
 173     if(!bool)
 174         return E_OUTOFMEMORY;
 175
 176     if(object_prototype)
 177         hres = init_dispex(&bool->dispex, ctx, &Bool_info, object_prototype);
 178     else
 179         hres = init_dispex_from_constr(&bool->dispex, ctx, &BoolInst_info, ctx->bool_constr);
 180
 181     if(FAILED(hres)) {
 182         heap_free(bool);
 183         return hres;
 184     }
 185
 186     *ret = bool;
 187     return S_OK;
 188 }
 189
 190 HRESULT create_bool_constr(script_ctx_t *ctx, jsdisp_t *object_prototype, jsdisp_t **ret)
 191 {
 192     BoolInstance *bool;
 193     HRESULT hres;
 194
 195     static const WCHAR BooleanW[] = {'B','o','o','l','e','a','n',0};
 196
 197     hres = alloc_bool(ctx, object_prototype, &bool);
 198     if(FAILED(hres))
 199         return hres;
 200
 201     hres = create_builtin_constructor(ctx, BoolConstr_value, BooleanW, NULL,
 202             PROPF_CONSTR|1, &bool->dispex, ret);
 203
 204     jsdisp_release(&bool->dispex);
 205     return hres;
 206 }
 207
 208 HRESULT create_bool(script_ctx_t *ctx, VARIANT_BOOL b, jsdisp_t **ret)
 209 {
 210     BoolInstance *bool;
 211     HRESULT hres;
 212
 213     hres = alloc_bool(ctx, NULL, &bool);
 214     if(FAILED(hres))
 215         return hres;
 216
 217     bool->val = b;
 218
 219     *ret = &bool->dispex;
 220     return S_OK;
 221 }