2 * Copyright 2008 Jacek Caban for CodeWeavers
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.
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.
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
22 #include "wine/debug.h"
24 WINE_DEFAULT_DEBUG_CHANNEL(jscript);
28 builtin_invoke_t value_proc;
31 source_elements_t *source;
32 parameter_t *parameters;
33 scope_chain_t *scope_chain;
41 static inline FunctionInstance *function_from_vdisp(vdisp_t *vdisp)
43 return (FunctionInstance*)vdisp->u.jsdisp;
46 static inline FunctionInstance *function_this(vdisp_t *jsthis)
48 return is_vclass(jsthis, JSCLASS_FUNCTION) ? function_from_vdisp(jsthis) : NULL;
51 static const WCHAR prototypeW[] = {'p','r','o','t','o','t', 'y', 'p','e',0};
53 static const WCHAR lengthW[] = {'l','e','n','g','t','h',0};
54 static const WCHAR toStringW[] = {'t','o','S','t','r','i','n','g',0};
55 static const WCHAR applyW[] = {'a','p','p','l','y',0};
56 static const WCHAR callW[] = {'c','a','l','l',0};
57 static const WCHAR argumentsW[] = {'a','r','g','u','m','e','n','t','s',0};
59 static IDispatch *get_this(DISPPARAMS *dp)
63 for(i=0; i < dp->cNamedArgs; i++) {
64 if(dp->rgdispidNamedArgs[i] == DISPID_THIS) {
65 if(V_VT(dp->rgvarg+i) == VT_DISPATCH)
66 return V_DISPATCH(dp->rgvarg+i);
68 WARN("This is not VT_DISPATCH\n");
73 TRACE("no this passed\n");
77 static HRESULT init_parameters(jsdisp_t *var_disp, FunctionInstance *function, DISPPARAMS *dp,
85 V_VT(&var_empty) = VT_EMPTY;
88 for(param = function->parameters; param; param = param->next) {
89 hres = jsdisp_propput_name(var_disp, param->identifier,
90 i < cargs ? get_arg(dp,i) : &var_empty, ei);
100 static HRESULT Arguments_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
101 VARIANT *retv, jsexcept_t *ei)
107 static const builtin_info_t Arguments_info = {
109 {NULL, Arguments_value, 0},
115 static HRESULT create_arguments(script_ctx_t *ctx, IDispatch *calee, DISPPARAMS *dp,
116 jsexcept_t *ei, jsdisp_t **ret)
123 static const WCHAR caleeW[] = {'c','a','l','l','e','e',0};
125 args = heap_alloc_zero(sizeof(jsdisp_t));
127 return E_OUTOFMEMORY;
129 hres = init_dispex_from_constr(args, ctx, &Arguments_info, ctx->object_constr);
135 for(i=0; i < arg_cnt(dp); i++) {
136 hres = jsdisp_propput_idx(args, i, get_arg(dp,i), ei);
141 if(SUCCEEDED(hres)) {
143 V_I4(&var) = arg_cnt(dp);
144 hres = jsdisp_propput_name(args, lengthW, &var, ei);
146 if(SUCCEEDED(hres)) {
147 V_VT(&var) = VT_DISPATCH;
148 V_DISPATCH(&var) = calee;
149 hres = jsdisp_propput_name(args, caleeW, &var, ei);
154 jsdisp_release(args);
162 static HRESULT create_var_disp(script_ctx_t *ctx, FunctionInstance *function, jsdisp_t *arg_disp,
163 DISPPARAMS *dp, jsexcept_t *ei, jsdisp_t **ret)
169 hres = create_dispex(ctx, NULL, NULL, &var_disp);
173 var_set_jsdisp(&var, arg_disp);
174 hres = jsdisp_propput_name(var_disp, argumentsW, &var, ei);
176 hres = init_parameters(var_disp, function, dp, ei);
178 jsdisp_release(var_disp);
186 static HRESULT invoke_source(script_ctx_t *ctx, FunctionInstance *function, IDispatch *this_obj, DISPPARAMS *dp,
187 VARIANT *retv, jsexcept_t *ei)
189 jsdisp_t *var_disp, *arg_disp;
190 exec_ctx_t *exec_ctx;
191 scope_chain_t *scope;
194 if(!function->source) {
195 FIXME("no source\n");
199 hres = create_arguments(ctx, to_disp(&function->dispex), dp, ei, &arg_disp);
203 hres = create_var_disp(ctx, function, arg_disp, dp, ei, &var_disp);
205 jsdisp_release(arg_disp);
209 hres = scope_push(function->scope_chain, var_disp, &scope);
210 if(SUCCEEDED(hres)) {
211 hres = create_exec_ctx(ctx, this_obj, var_disp, scope, FALSE, &exec_ctx);
212 scope_release(scope);
214 jsdisp_release(var_disp);
215 if(SUCCEEDED(hres)) {
218 prev_args = function->arguments;
219 function->arguments = arg_disp;
220 hres = exec_source(exec_ctx, function->code, function->source, FALSE, ei, retv);
221 function->arguments = prev_args;
223 jsdisp_release(arg_disp);
224 exec_release(exec_ctx);
230 static HRESULT invoke_constructor(script_ctx_t *ctx, FunctionInstance *function, DISPPARAMS *dp,
231 VARIANT *retv, jsexcept_t *ei)
237 hres = create_object(ctx, &function->dispex, &this_obj);
241 hres = invoke_source(ctx, function, to_disp(this_obj), dp, &var, ei);
243 jsdisp_release(this_obj);
247 if(V_VT(&var) == VT_DISPATCH) {
248 jsdisp_release(this_obj);
249 V_VT(retv) = VT_DISPATCH;
250 V_DISPATCH(retv) = V_DISPATCH(&var);
253 var_set_jsdisp(retv, this_obj);
258 static HRESULT invoke_value_proc(script_ctx_t *ctx, FunctionInstance *function, IDispatch *this_disp, WORD flags, DISPPARAMS *dp,
259 VARIANT *retv, jsexcept_t *ei)
265 set_disp(&vthis, this_disp);
266 else if(ctx->host_global)
267 set_disp(&vthis, ctx->host_global);
269 set_jsdisp(&vthis, ctx->global);
271 hres = function->value_proc(ctx, &vthis, flags, dp, retv, ei);
273 vdisp_release(&vthis);
277 static HRESULT call_function(script_ctx_t *ctx, FunctionInstance *function, IDispatch *this_obj, DISPPARAMS *args,
278 VARIANT *retv, jsexcept_t *ei)
280 if(function->value_proc)
281 return invoke_value_proc(ctx, function, this_obj, DISPATCH_METHOD, args, retv, ei);
283 return invoke_source(ctx, function, this_obj, args, retv, ei);
286 static HRESULT function_to_string(FunctionInstance *function, BSTR *ret)
290 static const WCHAR native_prefixW[] = {'\n','f','u','n','c','t','i','o','n',' '};
291 static const WCHAR native_suffixW[] =
292 {'(',')',' ','{','\n',' ',' ',' ',' ','[','n','a','t','i','v','e',' ','c','o','d','e',']','\n','}','\n'};
294 if(function->value_proc) {
297 name_len = strlenW(function->name);
298 str = SysAllocStringLen(NULL, sizeof(native_prefixW) + name_len*sizeof(WCHAR) + sizeof(native_suffixW));
300 return E_OUTOFMEMORY;
302 memcpy(str, native_prefixW, sizeof(native_prefixW));
303 memcpy(str + sizeof(native_prefixW)/sizeof(WCHAR), function->name, name_len*sizeof(WCHAR));
304 memcpy(str + sizeof(native_prefixW)/sizeof(WCHAR) + name_len, native_suffixW, sizeof(native_suffixW));
306 str = SysAllocStringLen(function->src_str, function->src_len);
308 return E_OUTOFMEMORY;
315 static HRESULT Function_length(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
316 VARIANT *retv, jsexcept_t *ei)
318 FunctionInstance *This = function_from_vdisp(jsthis);
320 TRACE("%p %d\n", This, This->length);
323 case DISPATCH_PROPERTYGET:
325 V_I4(retv) = This->length;
328 FIXME("unimplemented flags %x\n", flags);
335 static HRESULT Function_toString(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
336 VARIANT *retv, jsexcept_t *ei)
338 FunctionInstance *function;
344 if(!(function = function_this(jsthis)))
345 return throw_type_error(ctx, ei, JS_E_FUNCTION_EXPECTED, NULL);
347 hres = function_to_string(function, &str);
352 V_VT(retv) = VT_BSTR;
360 static HRESULT array_to_args(script_ctx_t *ctx, jsdisp_t *arg_array, jsexcept_t *ei, DISPPARAMS *args)
366 hres = jsdisp_propget_name(arg_array, lengthW, &var, ei);
370 hres = to_uint32(ctx, &var, ei, &length);
375 argv = heap_alloc(length * sizeof(VARIANT));
377 return E_OUTOFMEMORY;
379 for(i=0; i<length; i++) {
380 hres = jsdisp_get_idx(arg_array, i, argv+i, ei);
381 if(hres == DISP_E_UNKNOWNNAME)
382 V_VT(argv+i) = VT_EMPTY;
383 else if(FAILED(hres)) {
385 VariantClear(argv+i);
391 args->cArgs = length;
396 static HRESULT Function_apply(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
397 VARIANT *retv, jsexcept_t *ei)
399 FunctionInstance *function;
400 DISPPARAMS args = {NULL,NULL,0,0};
402 IDispatch *this_obj = NULL;
407 if(!(function = function_this(jsthis)))
408 return throw_type_error(ctx, ei, JS_E_FUNCTION_EXPECTED, NULL);
412 VARIANT *v = get_arg(dp,0);
414 if(V_VT(v) != VT_EMPTY && V_VT(v) != VT_NULL) {
415 hres = to_object(ctx, v, &this_obj);
422 jsdisp_t *arg_array = NULL;
424 if(V_VT(get_arg(dp,1)) == VT_DISPATCH) {
425 arg_array = iface_to_jsdisp((IUnknown*)V_DISPATCH(get_arg(dp,1)));
427 (!is_class(arg_array, JSCLASS_ARRAY) && !is_class(arg_array, JSCLASS_ARGUMENTS) )) {
428 jsdisp_release(arg_array);
434 hres = array_to_args(ctx, arg_array, ei, &args);
435 jsdisp_release(arg_array);
437 FIXME("throw TypeError\n");
443 hres = call_function(ctx, function, this_obj, &args, retv, ei);
446 IDispatch_Release(this_obj);
447 for(i=0; i<args.cArgs; i++)
448 VariantClear(args.rgvarg+i);
449 heap_free(args.rgvarg);
453 static HRESULT Function_call(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
454 VARIANT *retv, jsexcept_t *ei)
456 FunctionInstance *function;
457 DISPPARAMS args = {NULL,NULL,0,0};
458 IDispatch *this_obj = NULL;
464 if(!(function = function_this(jsthis)))
465 return throw_type_error(ctx, ei, JS_E_FUNCTION_EXPECTED, NULL);
469 VARIANT *v = get_arg(dp,0);
471 if(V_VT(v) != VT_EMPTY && V_VT(v) != VT_NULL) {
472 hres = to_object(ctx, v, &this_obj);
481 args.rgvarg = dp->rgvarg + dp->cArgs - args.cArgs-1;
483 hres = call_function(ctx, function, this_obj, &args, retv, ei);
486 IDispatch_Release(this_obj);
490 HRESULT Function_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
491 VARIANT *retv, jsexcept_t *ei)
493 FunctionInstance *function;
497 if(!is_vclass(jsthis, JSCLASS_FUNCTION)) {
498 ERR("dispex is not a function\n");
502 function = (FunctionInstance*)jsthis->u.jsdisp;
505 case DISPATCH_METHOD:
506 if(function->value_proc)
507 return invoke_value_proc(ctx, function, get_this(dp), flags, dp, retv, ei);
509 return invoke_source(ctx, function, get_this(dp), dp, retv, ei);
511 case DISPATCH_PROPERTYGET: {
515 hres = function_to_string(function, &str);
519 V_VT(retv) = VT_BSTR;
524 case DISPATCH_CONSTRUCT:
525 if(function->value_proc)
526 return invoke_value_proc(ctx, function, get_this(dp), flags, dp, retv, ei);
528 return invoke_constructor(ctx, function, dp, retv, ei);
531 FIXME("not implemented flags %x\n", flags);
538 static HRESULT Function_arguments(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
539 DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
541 FunctionInstance *function = (FunctionInstance*)jsthis->u.jsdisp;
547 case DISPATCH_PROPERTYGET: {
548 if(function->arguments) {
549 jsdisp_addref(function->arguments);
550 var_set_jsdisp(retv, function->arguments);
552 V_VT(retv) = VT_NULL;
556 case DISPATCH_PROPERTYPUT:
559 FIXME("unimplemented flags %x\n", flags);
566 static void Function_destructor(jsdisp_t *dispex)
568 FunctionInstance *This = (FunctionInstance*)dispex;
571 release_bytecode(This->code);
572 if(This->scope_chain)
573 scope_release(This->scope_chain);
577 static const builtin_prop_t Function_props[] = {
578 {applyW, Function_apply, PROPF_METHOD|2},
579 {argumentsW, Function_arguments, 0},
580 {callW, Function_call, PROPF_METHOD|1},
581 {lengthW, Function_length, 0},
582 {toStringW, Function_toString, PROPF_METHOD}
585 static const builtin_info_t Function_info = {
587 {NULL, Function_value, 0},
588 sizeof(Function_props)/sizeof(*Function_props),
594 static HRESULT create_function(script_ctx_t *ctx, const builtin_info_t *builtin_info, DWORD flags,
595 BOOL funcprot, jsdisp_t *prototype, FunctionInstance **ret)
597 FunctionInstance *function;
600 function = heap_alloc_zero(sizeof(FunctionInstance));
602 return E_OUTOFMEMORY;
605 hres = init_dispex(&function->dispex, ctx, &Function_info, prototype);
606 else if(builtin_info)
607 hres = init_dispex_from_constr(&function->dispex, ctx, builtin_info, ctx->function_constr);
609 hres = init_dispex_from_constr(&function->dispex, ctx, &Function_info, ctx->function_constr);
613 function->flags = flags;
614 function->length = flags & PROPF_ARGMASK;
620 static HRESULT set_prototype(script_ctx_t *ctx, jsdisp_t *dispex, jsdisp_t *prototype)
625 var_set_jsdisp(&var, prototype);
626 memset(&jsexcept, 0, sizeof(jsexcept));
628 return jsdisp_propput_name(dispex, prototypeW, &var, &jsexcept);
631 HRESULT create_builtin_function(script_ctx_t *ctx, builtin_invoke_t value_proc, const WCHAR *name,
632 const builtin_info_t *builtin_info, DWORD flags, jsdisp_t *prototype, jsdisp_t **ret)
634 FunctionInstance *function;
637 hres = create_function(ctx, builtin_info, flags, FALSE, NULL, &function);
645 V_I4(&var) = function->length;
646 hres = jsdisp_propput_const(&function->dispex, lengthW, &var);
650 hres = set_prototype(ctx, &function->dispex, prototype);
652 jsdisp_release(&function->dispex);
656 function->value_proc = value_proc;
657 function->name = name;
659 *ret = &function->dispex;
663 HRESULT create_source_function(script_ctx_t *ctx, bytecode_t *code, parameter_t *parameters, source_elements_t *source,
664 scope_chain_t *scope_chain, const WCHAR *src_str, DWORD src_len, jsdisp_t **ret)
666 FunctionInstance *function;
672 hres = create_object(ctx, NULL, &prototype);
676 hres = create_function(ctx, NULL, PROPF_CONSTR, FALSE, NULL, &function);
677 if(SUCCEEDED(hres)) {
678 hres = set_prototype(ctx, &function->dispex, prototype);
680 jsdisp_release(&function->dispex);
682 jsdisp_release(prototype);
686 function->source = source;
687 function->parameters = parameters;
690 scope_addref(scope_chain);
691 function->scope_chain = scope_chain;
694 bytecode_addref(code);
695 function->code = code;
697 for(iter = parameters; iter; iter = iter->next)
699 function->length = length;
701 function->src_str = src_str;
702 function->src_len = src_len;
704 *ret = &function->dispex;
708 static HRESULT construct_function(script_ctx_t *ctx, DISPPARAMS *dp, jsexcept_t *ei, IDispatch **ret)
710 function_expression_t *expr;
711 WCHAR *str = NULL, *ptr;
712 DWORD argc, len = 0, l;
713 parser_ctx_t *parser;
720 static const WCHAR function_anonymousW[] = {'f','u','n','c','t','i','o','n',' ','a','n','o','n','y','m','o','u','s','('};
721 static const WCHAR function_beginW[] = {')',' ','{','\n'};
722 static const WCHAR function_endW[] = {'\n','}',0};
726 params = heap_alloc(argc*sizeof(BSTR));
728 return E_OUTOFMEMORY;
731 len = (argc-2)*2; /* separating commas */
732 for(i=0; i < argc; i++) {
733 hres = to_string(ctx, get_arg(dp,i), ei, params+i);
736 len += SysStringLen(params[i]);
740 if(SUCCEEDED(hres)) {
741 len += (sizeof(function_anonymousW) + sizeof(function_beginW) + sizeof(function_endW)) / sizeof(WCHAR);
742 str = heap_alloc(len*sizeof(WCHAR));
744 memcpy(str, function_anonymousW, sizeof(function_anonymousW));
745 ptr = str + sizeof(function_anonymousW)/sizeof(WCHAR);
748 l = SysStringLen(params[j]);
749 memcpy(ptr, params[j], l*sizeof(WCHAR));
757 memcpy(ptr, function_beginW, sizeof(function_beginW));
758 ptr += sizeof(function_beginW)/sizeof(WCHAR);
760 l = SysStringLen(params[argc-1]);
761 memcpy(ptr, params[argc-1], l*sizeof(WCHAR));
764 memcpy(ptr, function_endW, sizeof(function_endW));
766 TRACE("%s\n", debugstr_w(str));
768 hres = E_OUTOFMEMORY;
773 SysFreeString(params[i]);
778 hres = compile_script(ctx, str, NULL, FALSE, FALSE, &code);
783 parser = code->parser;
784 if(!parser->source || !parser->source->functions || parser->source->functions->next || parser->source->variables) {
785 ERR("Invalid parser result!\n");
786 release_bytecode(code);
789 expr = parser->source->functions->expr;
791 hres = create_source_function(ctx, code, expr->parameter_list, expr->source_elements, NULL, expr->src_str,
792 expr->src_len, &function);
793 release_bytecode(code);
797 *ret = to_disp(function);
801 static HRESULT FunctionConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
802 VARIANT *retv, jsexcept_t *ei)
809 case DISPATCH_CONSTRUCT: {
812 hres = construct_function(ctx, dp, ei, &ret);
816 V_VT(retv) = VT_DISPATCH;
817 V_DISPATCH(retv) = ret;
821 FIXME("unimplemented flags %x\n", flags);
828 static HRESULT FunctionProt_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
829 VARIANT *retv, jsexcept_t *ei)
835 HRESULT init_function_constr(script_ctx_t *ctx, jsdisp_t *object_prototype)
837 FunctionInstance *prot, *constr;
840 static const WCHAR FunctionW[] = {'F','u','n','c','t','i','o','n',0};
842 hres = create_function(ctx, NULL, PROPF_CONSTR, TRUE, object_prototype, &prot);
846 prot->value_proc = FunctionProt_value;
847 prot->name = prototypeW;
849 hres = create_function(ctx, NULL, PROPF_CONSTR|1, TRUE, &prot->dispex, &constr);
850 if(SUCCEEDED(hres)) {
851 constr->value_proc = FunctionConstr_value;
852 constr->name = FunctionW;
853 hres = set_prototype(ctx, &constr->dispex, &prot->dispex);
855 jsdisp_release(&constr->dispex);
857 jsdisp_release(&prot->dispex);
861 ctx->function_constr = &constr->dispex;