reactos/dll/win32/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 typedef struct {
  23     jsdisp_t dispex;
  24
  25     BOOL val;
  26 } BoolInstance;
  27
  28 static const WCHAR toStringW[] = {'t','o','S','t','r','i','n','g',0};
  29 static const WCHAR valueOfW[] = {'v','a','l','u','e','O','f',0};
  30
  31 static inline BoolInstance *bool_this(vdisp_t *jsthis)
  32 {
  33     return is_vclass(jsthis, JSCLASS_BOOLEAN) ? (BoolInstance*)jsthis->u.jsdisp : NULL;
  34 }
  35
  36 BOOL bool_obj_value(jsdisp_t *obj)
  37 {
  38     assert(is_class(obj, JSCLASS_BOOLEAN));
  39     return ((BoolInstance*)obj)->val;
  40 }
  41
  42 /* ECMA-262 3rd Edition    15.6.4.2 */
  43 static HRESULT Bool_toString(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv, jsval_t *r)
  44 {
  45     BoolInstance *bool;
  46
  47     static const WCHAR trueW[] = {'t','r','u','e',0};
  48     static const WCHAR falseW[] = {'f','a','l','s','e',0};
  49
  50     TRACE("\n");
  51
  52     if(!(bool = bool_this(jsthis)))
  53         return throw_type_error(ctx, JS_E_BOOLEAN_EXPECTED, NULL);
  54
  55     if(r) {
  56         jsstr_t *val;
  57
  58         val = jsstr_alloc(bool->val ? trueW : falseW);
  59         if(!val)
  60             return E_OUTOFMEMORY;
  61
  62         *r = jsval_string(val);
  63     }
  64
  65     return S_OK;
  66 }
  67
  68 /* ECMA-262 3rd Edition    15.6.4.3 */
  69 static HRESULT Bool_valueOf(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv, jsval_t *r)
  70 {
  71     BoolInstance *bool;
  72
  73     TRACE("\n");
  74
  75     if(!(bool = bool_this(jsthis)))
  76         return throw_type_error(ctx, JS_E_BOOLEAN_EXPECTED, NULL);
  77
  78     if(r)
  79         *r = jsval_bool(bool->val);
  80     return S_OK;
  81 }
  82
  83 static HRESULT Bool_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
  84         jsval_t *r)
  85 {
  86     TRACE("\n");
  87
  88     switch(flags) {
  89     case INVOKE_FUNC:
  90         return throw_type_error(ctx, JS_E_FUNCTION_EXPECTED, NULL);
  91     default:
  92         FIXME("unimplemented flags %x\n", flags);
  93         return E_NOTIMPL;
  94     }
  95
  96     return S_OK;
  97
  98 }
  99
 100 static const builtin_prop_t Bool_props[] = {
 101     {toStringW,              Bool_toString,             PROPF_METHOD},
 102     {valueOfW,               Bool_valueOf,              PROPF_METHOD}
 103 };
 104
 105 static const builtin_info_t Bool_info = {
 106     JSCLASS_BOOLEAN,
 107     {NULL, Bool_value, 0},
 108     sizeof(Bool_props)/sizeof(*Bool_props),
 109     Bool_props,
 110     NULL,
 111     NULL
 112 };
 113
 114 static const builtin_info_t BoolInst_info = {
 115     JSCLASS_BOOLEAN,
 116     {NULL, Bool_value, 0},
 117     0, NULL,
 118     NULL,
 119     NULL
 120 };
 121
 122 static HRESULT BoolConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 123         jsval_t *r)
 124 {
 125     BOOL value = FALSE;
 126     HRESULT hres;
 127
 128     if(argc) {
 129         hres = to_boolean(argv[0], &value);
 130         if(FAILED(hres))
 131             return hres;
 132     }
 133
 134     switch(flags) {
 135     case DISPATCH_CONSTRUCT: {
 136         jsdisp_t *bool;
 137
 138         hres = create_bool(ctx, value, &bool);
 139         if(FAILED(hres))
 140             return hres;
 141
 142         *r = jsval_obj(bool);
 143         return S_OK;
 144     }
 145
 146     case INVOKE_FUNC:
 147         if(r)
 148             *r = jsval_bool(value);
 149         return S_OK;
 150
 151     default:
 152         FIXME("unimplemented flags %x\n", flags);
 153         return E_NOTIMPL;
 154     }
 155
 156     return S_OK;
 157 }
 158
 159 static HRESULT alloc_bool(script_ctx_t *ctx, jsdisp_t *object_prototype, BoolInstance **ret)
 160 {
 161     BoolInstance *bool;
 162     HRESULT hres;
 163
 164     bool = heap_alloc_zero(sizeof(BoolInstance));
 165     if(!bool)
 166         return E_OUTOFMEMORY;
 167
 168     if(object_prototype)
 169         hres = init_dispex(&bool->dispex, ctx, &Bool_info, object_prototype);
 170     else
 171         hres = init_dispex_from_constr(&bool->dispex, ctx, &BoolInst_info, ctx->bool_constr);
 172
 173     if(FAILED(hres)) {
 174         heap_free(bool);
 175         return hres;
 176     }
 177
 178     *ret = bool;
 179     return S_OK;
 180 }
 181
 182 HRESULT create_bool_constr(script_ctx_t *ctx, jsdisp_t *object_prototype, jsdisp_t **ret)
 183 {
 184     BoolInstance *bool;
 185     HRESULT hres;
 186
 187     static const WCHAR BooleanW[] = {'B','o','o','l','e','a','n',0};
 188
 189     hres = alloc_bool(ctx, object_prototype, &bool);
 190     if(FAILED(hres))
 191         return hres;
 192
 193     hres = create_builtin_constructor(ctx, BoolConstr_value, BooleanW, NULL,
 194             PROPF_CONSTR|1, &bool->dispex, ret);
 195
 196     jsdisp_release(&bool->dispex);
 197     return hres;
 198 }
 199
 200 HRESULT create_bool(script_ctx_t *ctx, BOOL b, jsdisp_t **ret)
 201 {
 202     BoolInstance *bool;
 203     HRESULT hres;
 204
 205     hres = alloc_bool(ctx, NULL, &bool);
 206     if(FAILED(hres))
 207         return hres;
 208
 209     bool->val = b;
 210
 211     *ret = &bool->dispex;
 212     return S_OK;
 213 }