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