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jscript: Implement Function.prototype.bind.
Signed-off-by: Jacek Caban <jacek@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
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@ -53,6 +53,14 @@ typedef struct {
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const WCHAR *name;
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} NativeFunction;
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typedef struct {
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FunctionInstance function;
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FunctionInstance *target;
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IDispatch *this;
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unsigned argc;
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jsval_t args[1];
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} BindFunction;
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typedef struct {
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jsdisp_t jsdisp;
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InterpretedFunction *function;
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@ -61,6 +69,8 @@ typedef struct {
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unsigned argc;
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} ArgumentsInstance;
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static HRESULT create_bind_function(script_ctx_t*,FunctionInstance*,IDispatch*,unsigned,jsval_t*,jsdisp_t**r);
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static inline FunctionInstance *function_from_jsdisp(jsdisp_t *jsdisp)
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{
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return CONTAINING_RECORD(jsdisp, FunctionInstance, dispex);
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@ -86,6 +96,7 @@ static const WCHAR prototypeW[] = {'p','r','o','t','o','t', 'y', 'p','e',0};
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static const WCHAR lengthW[] = {'l','e','n','g','t','h',0};
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static const WCHAR toStringW[] = {'t','o','S','t','r','i','n','g',0};
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static const WCHAR applyW[] = {'a','p','p','l','y',0};
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static const WCHAR bindW[] = {'b','i','n','d',0};
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static const WCHAR callW[] = {'c','a','l','l',0};
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static const WCHAR argumentsW[] = {'a','r','g','u','m','e','n','t','s',0};
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@ -424,6 +435,39 @@ static HRESULT Function_call(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, uns
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return hres;
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}
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static HRESULT Function_bind(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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FunctionInstance *function;
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jsdisp_t *new_function;
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HRESULT hres;
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TRACE("\n");
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if(!(function = function_this(jsthis)))
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return throw_type_error(ctx, JS_E_FUNCTION_EXPECTED, NULL);
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if(argc < 1) {
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FIXME("no this argument\n");
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return E_NOTIMPL;
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}
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if(!is_object_instance(argv[0]) || !get_object(argv[0])) {
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FIXME("%s is not an object instance\n", debugstr_jsval(argv[0]));
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return E_NOTIMPL;
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}
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hres = create_bind_function(ctx, function, get_object(argv[0]), argc - 1, argv + 1, &new_function);
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if(FAILED(hres))
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return hres;
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if(r)
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*r = jsval_obj(new_function);
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else
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jsdisp_release(new_function);
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return S_OK;
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}
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HRESULT Function_value(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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@ -490,6 +534,7 @@ static void Function_destructor(jsdisp_t *dispex)
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static const builtin_prop_t Function_props[] = {
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{applyW, Function_apply, PROPF_METHOD|2},
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{argumentsW, NULL, 0, Function_get_arguments},
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{bindW, Function_bind, PROPF_METHOD|PROPF_ES5|1},
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{callW, Function_call, PROPF_METHOD|1},
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{lengthW, NULL, 0, Function_get_length},
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{toStringW, Function_toString, PROPF_METHOD}
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@ -758,6 +803,94 @@ HRESULT create_source_function(script_ctx_t *ctx, bytecode_t *code, function_cod
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return S_OK;
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}
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static HRESULT BindFunction_call(script_ctx_t *ctx, FunctionInstance *func, IDispatch *this_obj, unsigned flags,
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unsigned argc, jsval_t *argv, jsval_t *r)
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{
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BindFunction *function = (BindFunction*)func;
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jsval_t *call_args = NULL;
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unsigned call_argc;
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HRESULT hres;
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TRACE("%p\n", function);
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call_argc = function->argc + argc;
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if(call_argc) {
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call_args = heap_alloc(function->argc * sizeof(*function->args));
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if(!call_args)
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return E_OUTOFMEMORY;
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if(function->argc)
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memcpy(call_args, function->args, function->argc * sizeof(*call_args));
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if(argc)
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memcpy(call_args + function->argc, argv, argc * sizeof(*call_args));
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}
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hres = function->target->vtbl->call(ctx, function->target, function->this, flags, call_argc, call_args, r);
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heap_free(call_args);
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return hres;
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}
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static HRESULT BindFunction_toString(FunctionInstance *function, jsstr_t **ret)
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{
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static const WCHAR native_functionW[] =
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{'\n','f','u','n','c','t','i','o','n','(',')',' ','{','\n',
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' ',' ',' ',' ','[','n','a','t','i','v','e',' ','c','o','d','e',']','\n',
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'}','\n',0};
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*ret = jsstr_alloc(native_functionW);
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return *ret ? S_OK : E_OUTOFMEMORY;
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}
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static void BindFunction_destructor(FunctionInstance *func)
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{
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BindFunction *function = (BindFunction*)func;
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unsigned i;
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TRACE("%p\n", function);
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for(i = 0; i < function->argc; i++)
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jsval_release(function->args[i]);
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jsdisp_release(&function->target->dispex);
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IDispatch_Release(function->this);
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}
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static const function_vtbl_t BindFunctionVtbl = {
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BindFunction_call,
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BindFunction_toString,
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BindFunction_destructor
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};
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static HRESULT create_bind_function(script_ctx_t *ctx, FunctionInstance *target, IDispatch *bound_this, unsigned argc,
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jsval_t *argv, jsdisp_t **ret)
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{
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BindFunction *function;
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HRESULT hres;
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hres = create_function(ctx, NULL, &BindFunctionVtbl, FIELD_OFFSET(BindFunction, args[argc]), PROPF_METHOD,
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FALSE, NULL, (void**)&function);
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if(FAILED(hres))
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return hres;
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jsdisp_addref(&target->dispex);
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function->target = target;
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IDispatch_AddRef(function->this = bound_this);
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for(function->argc = 0; function->argc < argc; function->argc++) {
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hres = jsval_copy(argv[function->argc], function->args + function->argc);
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if(FAILED(hres)) {
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jsdisp_release(&function->function.dispex);
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return hres;
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}
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}
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function->function.length = target->length > argc ? target->length - argc : 0;
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*ret = &function->function.dispex;
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return S_OK;
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}
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static HRESULT construct_function(script_ctx_t *ctx, unsigned argc, jsval_t *argv, IDispatch **ret)
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{
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WCHAR *str = NULL, *ptr;
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