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
24 #include "wine/debug.h"
26 WINE_DEFAULT_DEBUG_CHANNEL(jscript);
30 builtin_invoke_t value_proc;
33 scope_chain_t *scope_chain;
35 function_code_t *func_code;
42 FunctionInstance *function;
46 static inline FunctionInstance *function_from_vdisp(vdisp_t *vdisp)
48 return (FunctionInstance*)vdisp->u.jsdisp;
51 static inline FunctionInstance *function_this(vdisp_t *jsthis)
53 return is_vclass(jsthis, JSCLASS_FUNCTION) ? function_from_vdisp(jsthis) : NULL;
56 static const WCHAR prototypeW[] = {'p','r','o','t','o','t', 'y', 'p','e',0};
58 static const WCHAR lengthW[] = {'l','e','n','g','t','h',0};
59 static const WCHAR toStringW[] = {'t','o','S','t','r','i','n','g',0};
60 static const WCHAR applyW[] = {'a','p','p','l','y',0};
61 static const WCHAR callW[] = {'c','a','l','l',0};
62 static const WCHAR argumentsW[] = {'a','r','g','u','m','e','n','t','s',0};
64 static HRESULT init_parameters(jsdisp_t *var_disp, FunctionInstance *function, unsigned argc, jsval_t *argv)
69 for(i=0; i < function->func_code->param_cnt; i++) {
70 hres = jsdisp_propput_name(var_disp, function->func_code->params[i],
71 i < argc ? argv[i] : jsval_undefined());
79 static HRESULT Arguments_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
86 static void Arguments_destructor(jsdisp_t *jsdisp)
88 ArgumentsInstance *arguments = (ArgumentsInstance*)jsdisp;
90 jsdisp_release(&arguments->function->dispex);
91 jsdisp_release(arguments->var_obj);
95 static unsigned Arguments_idx_length(jsdisp_t *jsdisp)
97 ArgumentsInstance *arguments = (ArgumentsInstance*)jsdisp;
98 return arguments->function->length;
101 static HRESULT Arguments_idx_get(jsdisp_t *jsdisp, unsigned idx, jsval_t *res)
103 ArgumentsInstance *arguments = (ArgumentsInstance*)jsdisp;
105 TRACE("%p[%u]\n", arguments, idx);
107 /* FIXME: Accessing by name won't work for duplicated argument names */
108 return jsdisp_propget_name(arguments->var_obj, arguments->function->func_code->params[idx], res);
111 static HRESULT Arguments_idx_put(jsdisp_t *jsdisp, unsigned idx, jsval_t val)
113 ArgumentsInstance *arguments = (ArgumentsInstance*)jsdisp;
115 TRACE("%p[%u] = %s\n", arguments, idx, debugstr_jsval(val));
117 /* FIXME: Accessing by name won't work for duplicated argument names */
118 return jsdisp_propput_name(arguments->var_obj, arguments->function->func_code->params[idx], val);
121 static const builtin_info_t Arguments_info = {
123 {NULL, Arguments_value, 0},
125 Arguments_destructor,
127 Arguments_idx_length,
132 static HRESULT create_arguments(script_ctx_t *ctx, FunctionInstance *calee, jsdisp_t *var_obj,
133 unsigned argc, jsval_t *argv, jsdisp_t **ret)
135 ArgumentsInstance *args;
139 static const WCHAR caleeW[] = {'c','a','l','l','e','e',0};
141 args = heap_alloc_zero(sizeof(*args));
143 return E_OUTOFMEMORY;
145 hres = init_dispex_from_constr(&args->jsdisp, ctx, &Arguments_info, ctx->object_constr);
151 jsdisp_addref(&calee->dispex);
152 args->function = calee;
153 args->var_obj = jsdisp_addref(var_obj);
155 /* Store unnamed arguments directly in arguments object */
156 for(i = calee->length; i < argc; i++) {
159 static const WCHAR formatW[] = {'%','d',0};
161 sprintfW(buf, formatW, i);
162 hres = jsdisp_propput_dontenum(&args->jsdisp, buf, argv[i]);
167 if(SUCCEEDED(hres)) {
168 hres = jsdisp_propput_dontenum(&args->jsdisp, lengthW, jsval_number(argc));
170 hres = jsdisp_propput_dontenum(&args->jsdisp, caleeW, jsval_disp(to_disp(&calee->dispex)));
173 jsdisp_release(&args->jsdisp);
177 *ret = &args->jsdisp;
181 static HRESULT create_var_disp(script_ctx_t *ctx, FunctionInstance *function, unsigned argc, jsval_t *argv, jsdisp_t **ret)
186 hres = create_dispex(ctx, NULL, NULL, &var_disp);
190 hres = init_parameters(var_disp, function, argc, argv);
192 jsdisp_release(var_disp);
200 static HRESULT invoke_source(script_ctx_t *ctx, FunctionInstance *function, IDispatch *this_obj, unsigned argc, jsval_t *argv,
203 jsdisp_t *var_disp, *arg_disp;
204 exec_ctx_t *exec_ctx;
205 scope_chain_t *scope;
208 if(!function->func_code) {
209 FIXME("no source\n");
213 hres = create_var_disp(ctx, function, argc, argv, &var_disp);
217 hres = create_arguments(ctx, function, var_disp, argc, argv, &arg_disp);
219 jsdisp_release(var_disp);
223 hres = jsdisp_propput(var_disp, argumentsW, PROPF_DONTDELETE, jsval_obj(arg_disp));
225 jsdisp_release(arg_disp);
226 jsdisp_release(var_disp);
230 hres = scope_push(function->scope_chain, var_disp, to_disp(var_disp), &scope);
231 if(SUCCEEDED(hres)) {
232 hres = create_exec_ctx(ctx, this_obj, var_disp, scope, FALSE, &exec_ctx);
233 scope_release(scope);
235 if(SUCCEEDED(hres)) {
238 prev_args = function->arguments;
239 function->arguments = arg_disp;
240 hres = exec_source(exec_ctx, function->code, function->func_code, FALSE, r);
241 function->arguments = prev_args;
243 exec_release(exec_ctx);
247 /* Reset arguments value to cut the reference cycle. Note that since all activation contexts have
248 * their own arguments property, it's impossible to use prototype's one during name lookup */
249 jsdisp_propput_name(var_disp, argumentsW, jsval_undefined());
251 jsdisp_release(arg_disp);
252 jsdisp_release(var_disp);
256 static HRESULT invoke_constructor(script_ctx_t *ctx, FunctionInstance *function, unsigned argc, jsval_t *argv,
263 hres = create_object(ctx, &function->dispex, &this_obj);
267 hres = invoke_source(ctx, function, to_disp(this_obj), argc, argv, &var);
269 jsdisp_release(this_obj);
273 if(is_object_instance(var)) {
274 jsdisp_release(this_obj);
278 *r = jsval_obj(this_obj);
283 static HRESULT invoke_value_proc(script_ctx_t *ctx, FunctionInstance *function, IDispatch *this_disp, WORD flags,
284 unsigned argc, jsval_t *argv, jsval_t *r)
290 set_disp(&vthis, this_disp);
291 else if(ctx->host_global)
292 set_disp(&vthis, ctx->host_global);
294 set_jsdisp(&vthis, ctx->global);
296 hres = function->value_proc(ctx, &vthis, flags, argc, argv, r);
298 vdisp_release(&vthis);
302 static HRESULT call_function(script_ctx_t *ctx, FunctionInstance *function, IDispatch *this_obj,
303 unsigned argc, jsval_t *argv, jsval_t *r)
305 if(function->value_proc)
306 return invoke_value_proc(ctx, function, this_obj, DISPATCH_METHOD, argc, argv, r);
308 return invoke_source(ctx, function, this_obj, argc, argv, r);
311 static HRESULT function_to_string(FunctionInstance *function, jsstr_t **ret)
315 static const WCHAR native_prefixW[] = {'\n','f','u','n','c','t','i','o','n',' '};
316 static const WCHAR native_suffixW[] =
317 {'(',')',' ','{','\n',' ',' ',' ',' ','[','n','a','t','i','v','e',' ','c','o','d','e',']','\n','}','\n'};
319 if(function->value_proc) {
323 name_len = strlenW(function->name);
324 ptr = jsstr_alloc_buf((sizeof(native_prefixW)+sizeof(native_suffixW))/sizeof(WCHAR) + name_len, &str);
326 return E_OUTOFMEMORY;
328 memcpy(ptr, native_prefixW, sizeof(native_prefixW));
329 memcpy(ptr += sizeof(native_prefixW)/sizeof(WCHAR), function->name, name_len*sizeof(WCHAR));
330 memcpy(ptr + name_len, native_suffixW, sizeof(native_suffixW));
332 str = jsstr_alloc_len(function->func_code->source, function->func_code->source_len);
334 return E_OUTOFMEMORY;
341 HRESULT Function_invoke(jsdisp_t *func_this, IDispatch *jsthis, WORD flags, unsigned argc, jsval_t *argv, jsval_t *r)
343 FunctionInstance *function;
345 TRACE("func %p this %p\n", func_this, jsthis);
347 assert(is_class(func_this, JSCLASS_FUNCTION));
348 function = (FunctionInstance*)func_this;
350 if(function->value_proc)
351 return invoke_value_proc(function->dispex.ctx, function, jsthis, flags, argc, argv, r);
353 if(flags == DISPATCH_CONSTRUCT)
354 return invoke_constructor(function->dispex.ctx, function, argc, argv, r);
356 assert(flags == DISPATCH_METHOD);
357 return invoke_source(function->dispex.ctx, function, jsthis, argc, argv, r);
360 static HRESULT Function_length(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
363 FunctionInstance *This = function_from_vdisp(jsthis);
365 TRACE("%p %d\n", This, This->length);
368 case DISPATCH_PROPERTYGET:
369 *r = jsval_number(This->length);
372 FIXME("unimplemented flags %x\n", flags);
379 static HRESULT Function_toString(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
382 FunctionInstance *function;
388 if(!(function = function_this(jsthis)))
389 return throw_type_error(ctx, JS_E_FUNCTION_EXPECTED, NULL);
391 hres = function_to_string(function, &str);
396 *r = jsval_string(str);
402 static HRESULT array_to_args(script_ctx_t *ctx, jsdisp_t *arg_array, unsigned *argc, jsval_t **ret)
408 hres = jsdisp_propget_name(arg_array, lengthW, &val);
412 hres = to_uint32(ctx, val, &length);
417 argv = heap_alloc(length * sizeof(*argv));
419 return E_OUTOFMEMORY;
421 for(i=0; i<length; i++) {
422 hres = jsdisp_get_idx(arg_array, i, argv+i);
423 if(hres == DISP_E_UNKNOWNNAME) {
424 argv[i] = jsval_undefined();
425 }else if(FAILED(hres)) {
427 jsval_release(argv[i]);
438 static HRESULT Function_apply(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv, jsval_t *r)
440 FunctionInstance *function;
441 jsval_t *args = NULL;
443 IDispatch *this_obj = NULL;
448 if(!(function = function_this(jsthis)))
449 return throw_type_error(ctx, JS_E_FUNCTION_EXPECTED, NULL);
452 if(!is_undefined(argv[0]) && !is_null(argv[0])) {
453 hres = to_object(ctx, argv[0], &this_obj);
460 jsdisp_t *arg_array = NULL;
462 if(is_object_instance(argv[1])) {
463 arg_array = iface_to_jsdisp((IUnknown*)get_object(argv[1]));
465 (!is_class(arg_array, JSCLASS_ARRAY) && !is_class(arg_array, JSCLASS_ARGUMENTS) )) {
466 jsdisp_release(arg_array);
472 hres = array_to_args(ctx, arg_array, &cnt, &args);
473 jsdisp_release(arg_array);
475 FIXME("throw TypeError\n");
481 hres = call_function(ctx, function, this_obj, cnt, args, r);
484 IDispatch_Release(this_obj);
485 for(i=0; i < cnt; i++)
486 jsval_release(args[i]);
491 static HRESULT Function_call(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
494 FunctionInstance *function;
495 IDispatch *this_obj = NULL;
501 if(!(function = function_this(jsthis)))
502 return throw_type_error(ctx, JS_E_FUNCTION_EXPECTED, NULL);
505 if(!is_undefined(argv[0]) && !is_null(argv[0])) {
506 hres = to_object(ctx, argv[0], &this_obj);
514 hres = call_function(ctx, function, this_obj, cnt, argv+1, r);
517 IDispatch_Release(this_obj);
521 HRESULT Function_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
524 FunctionInstance *function;
528 if(!is_vclass(jsthis, JSCLASS_FUNCTION)) {
529 ERR("dispex is not a function\n");
533 function = (FunctionInstance*)jsthis->u.jsdisp;
536 case DISPATCH_METHOD:
537 assert(function->value_proc != NULL);
538 return invoke_value_proc(ctx, function, NULL, flags, argc, argv, r);
540 case DISPATCH_PROPERTYGET: {
544 hres = function_to_string(function, &str);
548 *r = jsval_string(str);
552 case DISPATCH_CONSTRUCT:
553 assert(function->value_proc != NULL);
554 return invoke_value_proc(ctx, function, NULL, flags, argc, argv, r);
557 FIXME("not implemented flags %x\n", flags);
564 static HRESULT Function_arguments(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
565 unsigned argc, jsval_t *argv, jsval_t *r)
567 FunctionInstance *function = (FunctionInstance*)jsthis->u.jsdisp;
573 case DISPATCH_PROPERTYGET: {
574 *r = function->arguments ? jsval_obj(jsdisp_addref(function->arguments)) : jsval_null();
577 case DISPATCH_PROPERTYPUT:
580 FIXME("unimplemented flags %x\n", flags);
587 static void Function_destructor(jsdisp_t *dispex)
589 FunctionInstance *This = (FunctionInstance*)dispex;
592 release_bytecode(This->code);
593 if(This->scope_chain)
594 scope_release(This->scope_chain);
598 static const builtin_prop_t Function_props[] = {
599 {applyW, Function_apply, PROPF_METHOD|2},
600 {argumentsW, Function_arguments, 0},
601 {callW, Function_call, PROPF_METHOD|1},
602 {lengthW, Function_length, 0},
603 {toStringW, Function_toString, PROPF_METHOD}
606 static const builtin_info_t Function_info = {
608 {NULL, Function_value, 0},
609 sizeof(Function_props)/sizeof(*Function_props),
615 static const builtin_prop_t FunctionInst_props[] = {
616 {argumentsW, Function_arguments, 0},
617 {lengthW, Function_length, 0}
620 static const builtin_info_t FunctionInst_info = {
622 {NULL, Function_value, 0},
623 sizeof(FunctionInst_props)/sizeof(*FunctionInst_props),
629 static HRESULT create_function(script_ctx_t *ctx, const builtin_info_t *builtin_info, DWORD flags,
630 BOOL funcprot, jsdisp_t *prototype, FunctionInstance **ret)
632 FunctionInstance *function;
635 function = heap_alloc_zero(sizeof(FunctionInstance));
637 return E_OUTOFMEMORY;
640 hres = init_dispex(&function->dispex, ctx, builtin_info, prototype);
641 else if(builtin_info)
642 hres = init_dispex_from_constr(&function->dispex, ctx, builtin_info, ctx->function_constr);
644 hres = init_dispex_from_constr(&function->dispex, ctx, &FunctionInst_info, ctx->function_constr);
650 function->flags = flags;
651 function->length = flags & PROPF_ARGMASK;
657 static inline HRESULT set_prototype(script_ctx_t *ctx, jsdisp_t *dispex, jsdisp_t *prototype)
659 return jsdisp_propput_dontenum(dispex, prototypeW, jsval_obj(prototype));
662 HRESULT create_builtin_function(script_ctx_t *ctx, builtin_invoke_t value_proc, const WCHAR *name,
663 const builtin_info_t *builtin_info, DWORD flags, jsdisp_t *prototype, jsdisp_t **ret)
665 FunctionInstance *function;
668 hres = create_function(ctx, builtin_info, flags, FALSE, NULL, &function);
673 hres = jsdisp_propput_const(&function->dispex, lengthW, jsval_number(function->length));
675 hres = set_prototype(ctx, &function->dispex, prototype);
677 jsdisp_release(&function->dispex);
681 function->value_proc = value_proc;
682 function->name = name;
684 *ret = &function->dispex;
688 static HRESULT set_constructor_prop(script_ctx_t *ctx, jsdisp_t *constr, jsdisp_t *prot)
690 static const WCHAR constructorW[] = {'c','o','n','s','t','r','u','c','t','o','r',0};
692 return jsdisp_propput_dontenum(prot, constructorW, jsval_obj(constr));
695 HRESULT create_builtin_constructor(script_ctx_t *ctx, builtin_invoke_t value_proc, const WCHAR *name,
696 const builtin_info_t *builtin_info, DWORD flags, jsdisp_t *prototype, jsdisp_t **ret)
701 hres = create_builtin_function(ctx, value_proc, name, builtin_info, flags, prototype, &constr);
705 hres = set_constructor_prop(ctx, constr, prototype);
707 jsdisp_release(constr);
715 HRESULT create_source_function(script_ctx_t *ctx, bytecode_t *code, function_code_t *func_code,
716 scope_chain_t *scope_chain, jsdisp_t **ret)
718 FunctionInstance *function;
722 hres = create_object(ctx, NULL, &prototype);
726 hres = create_function(ctx, NULL, PROPF_CONSTR, FALSE, NULL, &function);
727 if(SUCCEEDED(hres)) {
728 hres = set_prototype(ctx, &function->dispex, prototype);
730 hres = set_constructor_prop(ctx, &function->dispex, prototype);
732 jsdisp_release(&function->dispex);
734 jsdisp_release(prototype);
739 scope_addref(scope_chain);
740 function->scope_chain = scope_chain;
743 bytecode_addref(code);
744 function->code = code;
745 function->func_code = func_code;
746 function->length = function->func_code->param_cnt;
748 *ret = &function->dispex;
752 static HRESULT construct_function(script_ctx_t *ctx, unsigned argc, jsval_t *argv, IDispatch **ret)
754 WCHAR *str = NULL, *ptr;
755 unsigned len = 0, i = 0;
758 jsstr_t **params = NULL;
762 static const WCHAR function_anonymousW[] = {'f','u','n','c','t','i','o','n',' ','a','n','o','n','y','m','o','u','s','('};
763 static const WCHAR function_beginW[] = {')',' ','{','\n'};
764 static const WCHAR function_endW[] = {'\n','}',0};
767 params = heap_alloc(argc*sizeof(*params));
769 return E_OUTOFMEMORY;
772 len = (argc-2)*2; /* separating commas */
773 for(i=0; i < argc; i++) {
774 hres = to_string(ctx, argv[i], params+i);
777 len += jsstr_length(params[i]);
781 if(SUCCEEDED(hres)) {
782 len += (sizeof(function_anonymousW) + sizeof(function_beginW) + sizeof(function_endW)) / sizeof(WCHAR);
783 str = heap_alloc(len*sizeof(WCHAR));
785 memcpy(str, function_anonymousW, sizeof(function_anonymousW));
786 ptr = str + sizeof(function_anonymousW)/sizeof(WCHAR);
789 ptr += jsstr_flush(params[j], ptr);
796 memcpy(ptr, function_beginW, sizeof(function_beginW));
797 ptr += sizeof(function_beginW)/sizeof(WCHAR);
799 ptr += jsstr_flush(params[argc-1], ptr);
800 memcpy(ptr, function_endW, sizeof(function_endW));
802 TRACE("%s\n", debugstr_w(str));
804 hres = E_OUTOFMEMORY;
809 jsstr_release(params[--i]);
814 hres = compile_script(ctx, str, NULL, NULL, FALSE, FALSE, &code);
819 if(code->global_code.func_cnt != 1 || code->global_code.var_cnt) {
820 ERR("Invalid parser result!\n");
821 release_bytecode(code);
825 hres = create_source_function(ctx, code, code->global_code.funcs, NULL, &function);
826 release_bytecode(code);
830 *ret = to_disp(function);
834 static HRESULT FunctionConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
842 case DISPATCH_CONSTRUCT: {
845 hres = construct_function(ctx, argc, argv, &ret);
849 *r = jsval_disp(ret);
853 FIXME("unimplemented flags %x\n", flags);
860 static HRESULT FunctionProt_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
867 HRESULT init_function_constr(script_ctx_t *ctx, jsdisp_t *object_prototype)
869 FunctionInstance *prot, *constr;
872 static const WCHAR FunctionW[] = {'F','u','n','c','t','i','o','n',0};
874 hres = create_function(ctx, &Function_info, PROPF_CONSTR, TRUE, object_prototype, &prot);
878 prot->value_proc = FunctionProt_value;
879 prot->name = prototypeW;
881 hres = create_function(ctx, &FunctionInst_info, PROPF_CONSTR|1, TRUE, &prot->dispex, &constr);
882 if(SUCCEEDED(hres)) {
883 constr->value_proc = FunctionConstr_value;
884 constr->name = FunctionW;
885 hres = set_prototype(ctx, &constr->dispex, &prot->dispex);
887 hres = set_constructor_prop(ctx, &constr->dispex, &prot->dispex);
889 jsdisp_release(&constr->dispex);
891 jsdisp_release(&prot->dispex);
895 ctx->function_constr = &constr->dispex;