dlls/jscript/function.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 #include "engine.h"
  21
  22 #include "wine/debug.h"
  23
  24 WINE_DEFAULT_DEBUG_CHANNEL(jscript);
  25
  26 typedef struct {
  27     DispatchEx dispex;
  28     builtin_invoke_t value_proc;
  29     DWORD flags;
  30     source_elements_t *source;
  31     parameter_t *parameters;
  32     scope_chain_t *scope_chain;
  33     parser_ctx_t *parser;
  34     DWORD length;
  35 } FunctionInstance;
  36
  37 static const WCHAR prototypeW[] = {'p','r','o','t','o','t', 'y', 'p','e',0};
  38
  39 static const WCHAR lengthW[] = {'l','e','n','g','t','h',0};
  40 static const WCHAR toStringW[] = {'t','o','S','t','r','i','n','g',0};
  41 static const WCHAR toLocaleStringW[] = {'t','o','L','o','c','a','l','e','S','t','r','i','n','g',0};
  42 static const WCHAR valueOfW[] = {'v','a','l','u','e','O','f',0};
  43 static const WCHAR applyW[] = {'a','p','p','l','y',0};
  44 static const WCHAR callW[] = {'c','a','l','l',0};
  45 static const WCHAR hasOwnPropertyW[] = {'h','a','s','O','w','n','P','r','o','p','e','r','t','y',0};
  46 static const WCHAR propertyIsEnumerableW[] = {'p','r','o','p','e','r','t','y','I','s','E','n','u','m','e','r','a','b','l','e',0};
  47 static const WCHAR isPrototypeOfW[] = {'i','s','P','r','o','t','o','t','y','p','e','O','f',0};
  48
  49 static HRESULT Function_length(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
  50         VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
  51 {
  52     FunctionInstance *This = (FunctionInstance*)dispex;
  53
  54     TRACE("%p %d\n", This, This->length);
  55
  56     switch(flags) {
  57     case DISPATCH_PROPERTYGET:
  58         V_VT(retv) = VT_I4;
  59         V_I4(retv) = This->length;
  60         break;
  61     default:
  62         FIXME("unimplemented flags %x\n", flags);
  63         return E_NOTIMPL;
  64     }
  65
  66     return S_OK;
  67 }
  68
  69 static HRESULT Function_toString(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
  70         VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
  71 {
  72     FIXME("\n");
  73     return E_NOTIMPL;
  74 }
  75
  76 static HRESULT Function_toLocaleString(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
  77         VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
  78 {
  79     FIXME("\n");
  80     return E_NOTIMPL;
  81 }
  82
  83 static HRESULT Function_valueOf(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
  84         VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
  85 {
  86     FIXME("\n");
  87     return E_NOTIMPL;
  88 }
  89
  90 static HRESULT Function_apply(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
  91         VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
  92 {
  93     FIXME("\n");
  94     return E_NOTIMPL;
  95 }
  96
  97 static HRESULT Function_call(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
  98         VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
  99 {
 100     FIXME("\n");
 101     return E_NOTIMPL;
 102 }
 103
 104 static HRESULT Function_hasOwnProperty(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
 105         VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
 106 {
 107     FIXME("\n");
 108     return E_NOTIMPL;
 109 }
 110
 111 static HRESULT Function_propertyIsEnumerable(DispatchEx *dispex, LCID lcid, 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 Function_isPrototypeOf(DispatchEx *dispex, LCID lcid, 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 Function_value(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
 126         VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
 127 {
 128     FIXME("\n");
 129     return E_NOTIMPL;
 130 }
 131
 132 static void Function_destructor(DispatchEx *dispex)
 133 {
 134     FunctionInstance *This = (FunctionInstance*)dispex;
 135
 136     if(This->parser)
 137         parser_release(This->parser);
 138     if(This->scope_chain)
 139         scope_release(This->scope_chain);
 140     heap_free(This);
 141 }
 142
 143 static const builtin_prop_t Function_props[] = {
 144     {applyW,                 Function_apply,                 PROPF_METHOD},
 145     {callW,                  Function_call,                  PROPF_METHOD},
 146     {hasOwnPropertyW,        Function_hasOwnProperty,        PROPF_METHOD},
 147     {isPrototypeOfW,         Function_isPrototypeOf,         PROPF_METHOD},
 148     {lengthW,                Function_length,                0},
 149     {propertyIsEnumerableW,  Function_propertyIsEnumerable,  PROPF_METHOD},
 150     {toLocaleStringW,        Function_toLocaleString,        PROPF_METHOD},
 151     {toStringW,              Function_toString,              PROPF_METHOD},
 152     {valueOfW,               Function_valueOf,               PROPF_METHOD}
 153 };
 154
 155 static const builtin_info_t Function_info = {
 156     JSCLASS_FUNCTION,
 157     {NULL, Function_value, 0},
 158     sizeof(Function_props)/sizeof(*Function_props),
 159     Function_props,
 160     Function_destructor,
 161     NULL
 162 };
 163
 164 static HRESULT create_function(script_ctx_t *ctx, DWORD flags, DispatchEx *prototype, FunctionInstance **ret)
 165 {
 166     FunctionInstance *function;
 167     HRESULT hres;
 168
 169     function = heap_alloc_zero(sizeof(FunctionInstance));
 170     if(!function)
 171         return E_OUTOFMEMORY;
 172
 173     hres = init_dispex(&function->dispex, ctx, &Function_info, NULL);
 174     if(FAILED(hres))
 175         return hres;
 176
 177     function->flags = flags;
 178     function->length = flags & PROPF_ARGMASK;
 179
 180     if(prototype) {
 181         jsexcept_t jsexcept;
 182         VARIANT var;
 183
 184         V_VT(&var) = VT_DISPATCH;
 185         V_DISPATCH(&var) = (IDispatch*)_IDispatchEx_(prototype);
 186         memset(&jsexcept, 0, sizeof(jsexcept));
 187
 188         hres = jsdisp_propput_name(&function->dispex, prototypeW, ctx->lcid, &var, &jsexcept, NULL/*FIXME*/);
 189         if(FAILED(hres)) {
 190             IDispatchEx_Release(_IDispatchEx_(&function->dispex));
 191             return hres;
 192         }
 193     }
 194
 195     *ret = function;
 196     return S_OK;
 197 }
 198
 199 HRESULT create_builtin_function(script_ctx_t *ctx, builtin_invoke_t value_proc, DWORD flags,
 200         DispatchEx *prototype, DispatchEx **ret)
 201 {
 202     FunctionInstance *function;
 203     HRESULT hres;
 204
 205     hres = create_function(ctx, flags, prototype, &function);
 206     if(FAILED(hres))
 207         return hres;
 208
 209     function->value_proc = value_proc;
 210
 211     *ret = &function->dispex;
 212     return S_OK;
 213 }
 214
 215 HRESULT create_source_function(parser_ctx_t *ctx, parameter_t *parameters, source_elements_t *source,
 216         scope_chain_t *scope_chain, DispatchEx **ret)
 217 {
 218     FunctionInstance *function;
 219     parameter_t *iter;
 220     DWORD length = 0;
 221     HRESULT hres;
 222
 223     hres = create_function(ctx->script, PROPF_CONSTR, NULL, &function);
 224     if(FAILED(hres))
 225         return hres;
 226
 227     function->source = source;
 228     function->parameters = parameters;
 229
 230     if(scope_chain) {
 231         scope_addref(scope_chain);
 232         function->scope_chain = scope_chain;
 233     }
 234
 235     parser_addref(ctx);
 236     function->parser = ctx;
 237
 238     for(iter = parameters; iter; iter = iter->next)
 239         length++;
 240     function->length = length;
 241
 242     *ret = &function->dispex;
 243     return S_OK;
 244 }