--- /dev/null
+/*
+ * Copyright 2019 Andreas Maier
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#include <assert.h>
+
+#include "jscript.h"
+
+#include "wine/debug.h"
+
+WINE_DEFAULT_DEBUG_CHANNEL(jscript);
+
+typedef struct {
+ jsdisp_t dispex;
+ /* IEnumVARIANT returned by _NewEnum */
+ IEnumVARIANT *enumvar;
+ /* current item */
+ jsval_t item;
+ BOOL atend;
+} EnumeratorInstance;
+
+static const WCHAR atEndW[] = {'a','t','E','n','d',0};
+static const WCHAR itemW[] = {'i','t','e','m',0};
+static const WCHAR moveFirstW[] = {'m','o','v','e','F','i','r','s','t',0};
+static const WCHAR moveNextW[] = {'m','o','v','e','N','e','x','t',0};
+
+static inline EnumeratorInstance *enumerator_from_jsdisp(jsdisp_t *jsdisp)
+{
+ return CONTAINING_RECORD(jsdisp, EnumeratorInstance, dispex);
+}
+
+static inline EnumeratorInstance *enumerator_from_vdisp(vdisp_t *vdisp)
+{
+ return enumerator_from_jsdisp(vdisp->u.jsdisp);
+}
+
+static inline EnumeratorInstance *enumerator_this(vdisp_t *jsthis)
+{
+ return is_vclass(jsthis, JSCLASS_ENUMERATOR) ? enumerator_from_vdisp(jsthis) : NULL;
+}
+
+static inline HRESULT enumvar_get_next_item(EnumeratorInstance *This)
+{
+ HRESULT hres;
+ VARIANT nextitem;
+
+ if (This->atend)
+ return S_OK;
+
+ /* dont leak pervious value */
+ jsval_release(This->item);
+
+ /* not at end ... get next item */
+ VariantInit(&nextitem);
+ hres = IEnumVARIANT_Next(This->enumvar, 1, &nextitem, NULL);
+ if (hres == S_OK)
+ {
+ hres = variant_to_jsval(&nextitem, &This->item);
+ VariantClear(&nextitem);
+ if (FAILED(hres))
+ {
+ WARN("failed to convert jsval to variant!");
+ This->item = jsval_undefined();
+ return hres;
+ }
+ }
+ else
+ {
+ This->item = jsval_undefined();
+ This->atend = TRUE;
+ }
+
+ return S_OK;
+}
+
+static void Enumerator_destructor(jsdisp_t *dispex)
+{
+ EnumeratorInstance *This = enumerator_from_jsdisp(dispex);
+
+ TRACE("\n");
+
+ jsval_release(This->item);
+ heap_free(dispex);
+}
+
+static HRESULT Enumerator_atEnd(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
+ jsval_t *r)
+{
+ EnumeratorInstance *This;
+
+ if (!(This = enumerator_this(jsthis)))
+ return throw_type_error(ctx, JS_E_ENUMERATOR_EXPECTED, NULL);
+
+ TRACE("%d\n", This->atend);
+
+ if (r)
+ *r = jsval_bool(This->atend);
+ return S_OK;
+}
+
+static HRESULT Enumerator_item(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
+ jsval_t *r)
+{
+ EnumeratorInstance *This;
+
+ TRACE("\n");
+
+ if (!(This = enumerator_this(jsthis)))
+ return throw_type_error(ctx, JS_E_ENUMERATOR_EXPECTED, NULL);
+
+ return r ? jsval_copy(This->item, r) : S_OK;
+}
+
+static HRESULT Enumerator_moveFirst(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
+ jsval_t *r)
+{
+ EnumeratorInstance *This;
+ HRESULT hres = S_OK;
+
+ TRACE("\n");
+
+ if (!(This = enumerator_this(jsthis)))
+ return throw_type_error(ctx, JS_E_ENUMERATOR_EXPECTED, NULL);
+
+ if (This->enumvar)
+ {
+ hres = IEnumVARIANT_Reset(This->enumvar);
+ if (FAILED(hres))
+ return hres;
+
+ This->atend = FALSE;
+ hres = enumvar_get_next_item(This);
+ if(FAILED(hres))
+ return hres;
+ }
+
+ if (r)
+ *r = jsval_undefined();
+ return S_OK;
+}
+
+static HRESULT Enumerator_moveNext(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
+ jsval_t *r)
+{
+ EnumeratorInstance *This;
+ HRESULT hres = S_OK;
+
+ TRACE("\n");
+
+ if (!(This = enumerator_this(jsthis)))
+ return throw_type_error(ctx, JS_E_ENUMERATOR_EXPECTED, NULL);
+
+ if (This->enumvar)
+ {
+ hres = enumvar_get_next_item(This);
+ if (FAILED(hres))
+ return hres;
+ }
+
+ if (r)
+ *r = jsval_undefined();
+ return S_OK;
+}
+
+static const builtin_prop_t Enumerator_props[] = {
+ {atEndW, Enumerator_atEnd, PROPF_METHOD},
+ {itemW, Enumerator_item, PROPF_METHOD},
+ {moveFirstW, Enumerator_moveFirst, PROPF_METHOD},
+ {moveNextW, Enumerator_moveNext, PROPF_METHOD},
+};
+
+static const builtin_info_t Enumerator_info = {
+ JSCLASS_ENUMERATOR,
+ {NULL, NULL, 0},
+ ARRAY_SIZE(Enumerator_props),
+ Enumerator_props,
+ NULL,
+ NULL
+};
+
+static const builtin_info_t EnumeratorInst_info = {
+ JSCLASS_ENUMERATOR,
+ {NULL, NULL, 0, NULL},
+ 0,
+ NULL,
+ Enumerator_destructor,
+ NULL
+};
+
+static HRESULT alloc_enumerator(script_ctx_t *ctx, jsdisp_t *object_prototype, EnumeratorInstance **ret)
+{
+ EnumeratorInstance *enumerator;
+ HRESULT hres;
+
+ enumerator = heap_alloc_zero(sizeof(EnumeratorInstance));
+ if(!enumerator)
+ return E_OUTOFMEMORY;
+
+ if(object_prototype)
+ hres = init_dispex(&enumerator->dispex, ctx, &Enumerator_info, object_prototype);
+ else
+ hres = init_dispex_from_constr(&enumerator->dispex, ctx, &EnumeratorInst_info,
+ ctx->enumerator_constr);
+
+ if(FAILED(hres))
+ {
+ heap_free(enumerator);
+ return hres;
+ }
+
+ *ret = enumerator;
+ return S_OK;
+}
+
+static HRESULT create_enumerator(script_ctx_t *ctx, jsval_t *argv, jsdisp_t **ret)
+{
+ EnumeratorInstance *enumerator;
+ HRESULT hres;
+ IDispatch *obj;
+ DISPPARAMS dispparams = {NULL, NULL, 0, 0};
+ IEnumVARIANT *enumvar = NULL;
+
+ if (argv)
+ {
+ VARIANT varresult;
+
+ if (!is_object_instance(*argv))
+ {
+ FIXME("I don't know how to handle this type!\n");
+ return E_NOTIMPL;
+ }
+
+ obj = get_object(*argv);
+
+ /* Try to get a IEnumVARIANT by _NewEnum */
+ VariantInit(&varresult);
+ hres = IDispatch_Invoke(obj, DISPID_NEWENUM, &IID_NULL, LOCALE_NEUTRAL,
+ DISPATCH_METHOD, &dispparams, &varresult, NULL, NULL);
+ if (FAILED(hres))
+ {
+ WARN("Enumerator: no DISPID_NEWENUM.\n");
+ return E_INVALIDARG;
+ }
+
+ if ((V_VT(&varresult) == VT_DISPATCH) || (V_VT(&varresult) == VT_UNKNOWN))
+ {
+ hres = IUnknown_QueryInterface(V_UNKNOWN(&varresult),
+ &IID_IEnumVARIANT, (void**)&enumvar);
+ }
+ else
+ {
+ FIXME("Enumerator: NewEnum unexpected type of varresult (%d).\n", V_VT(&varresult));
+ hres = E_INVALIDARG;
+ }
+ VariantClear(&varresult);
+ if (FAILED(hres))
+ return hres;
+ }
+
+ hres = alloc_enumerator(ctx, NULL, &enumerator);
+ if (FAILED(hres))
+ {
+ if (enumvar)
+ IEnumVARIANT_Release(enumvar);
+ return hres;
+ }
+
+ enumerator->enumvar = enumvar;
+ enumerator->atend = !enumvar;
+ hres = enumvar_get_next_item(enumerator);
+ if (FAILED(hres))
+ {
+ jsdisp_release(&enumerator->dispex);
+ return hres;
+ }
+
+ *ret = &enumerator->dispex;
+ return S_OK;
+}
+
+static HRESULT EnumeratorConstr_value(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
+ jsval_t *r)
+{
+ jsdisp_t *obj;
+ HRESULT hres;
+
+ TRACE("\n");
+
+ switch(flags) {
+ case DISPATCH_CONSTRUCT: {
+ if (argc > 1)
+ return throw_syntax_error(ctx, JS_E_INVALIDARG, NULL);
+
+ hres = create_enumerator(ctx, (argc == 1) ? &argv[0] : 0, &obj);
+ if(FAILED(hres))
+ return hres;
+
+ *r = jsval_obj(obj);
+ break;
+ }
+ default:
+ FIXME("unimplemented flags: %x\n", flags);
+ return E_NOTIMPL;
+ }
+
+ return S_OK;
+}
+
+static const builtin_info_t EnumeratorConstr_info = {
+ JSCLASS_FUNCTION,
+ DEFAULT_FUNCTION_VALUE,
+ 0,
+ NULL,
+ NULL,
+ NULL
+};
+
+HRESULT create_enumerator_constr(script_ctx_t *ctx, jsdisp_t *object_prototype, jsdisp_t **ret)
+{
+ EnumeratorInstance *enumerator;
+ HRESULT hres;
+ static const WCHAR EnumeratorW[] = {'E','n','u','m','e','r','a','t','o','r',0};
+
+ hres = alloc_enumerator(ctx, object_prototype, &enumerator);
+ if(FAILED(hres))
+ return hres;
+
+ hres = create_builtin_constructor(ctx, EnumeratorConstr_value,
+ EnumeratorW, &EnumeratorConstr_info,
+ PROPF_CONSTR|7, &enumerator->dispex, ret);
+ jsdisp_release(&enumerator->dispex);
+
+ return hres;
+}
projects / reactos.git / commitdiff