Signed-off-by: Gabriel Ivăncescu gabrielopcode@gmail.com ---
This follows the spec with tests. As the spec says:
`The thisArg value is passed without modification as the this value. This is a change from Edition 3, where a undefined or null thisArg is replaced with the global object and ToObject is applied to all other values and that result is passed as the this value.`
For ES5 and above, we convert it to object in InterpretedFunction_call, because we don't support strict mode yet. For earlier versions, conversion is done in apply/call themselves, as quoted above.
dlls/jscript/function.c | 70 +++++++++++++++++++++++---------------- dlls/jscript/tests/api.js | 8 +++++ dlls/mshtml/tests/es5.js | 4 +++ 3 files changed, 54 insertions(+), 28 deletions(-)
diff --git a/dlls/jscript/function.c b/dlls/jscript/function.c index e0b7310..fc8a85c 100644 --- a/dlls/jscript/function.c +++ b/dlls/jscript/function.c @@ -35,7 +35,7 @@ typedef struct { } FunctionInstance;
struct _function_vtbl_t { - HRESULT (*call)(script_ctx_t*,FunctionInstance*,IDispatch*,unsigned,unsigned,jsval_t*,jsval_t*); + HRESULT (*call)(script_ctx_t*,FunctionInstance*,jsval_t,unsigned,unsigned,jsval_t*,jsval_t*); HRESULT (*toString)(FunctionInstance*,jsstr_t**); function_code_t* (*get_code)(FunctionInstance*); void (*destructor)(FunctionInstance*); @@ -256,7 +256,7 @@ HRESULT Function_invoke(jsdisp_t *func_this, IDispatch *jsthis, WORD flags, unsi assert(is_class(func_this, JSCLASS_FUNCTION)); function = function_from_jsdisp(func_this);
- return function->vtbl->call(function->dispex.ctx, function, jsthis, flags, argc, argv, r); + return function->vtbl->call(function->dispex.ctx, function, jsval_disp(jsthis), flags, argc, argv, r); }
static HRESULT Function_get_length(script_ctx_t *ctx, jsdisp_t *jsthis, jsval_t *r) @@ -328,10 +328,10 @@ static HRESULT array_to_args(script_ctx_t *ctx, jsdisp_t *arg_array, unsigned *a
static HRESULT Function_apply(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv, jsval_t *r) { + jsval_t this_val = jsval_undefined(); FunctionInstance *function; jsval_t *args = NULL; unsigned i, cnt = 0; - IDispatch *this_obj = NULL; HRESULT hres = S_OK;
TRACE("\n"); @@ -340,10 +340,16 @@ static HRESULT Function_apply(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsi return JS_E_FUNCTION_EXPECTED;
if(argc) { - if(!is_undefined(argv[0]) && !is_null(argv[0])) { + if(ctx->version < SCRIPTLANGUAGEVERSION_ES5 && !is_undefined(argv[0]) && !is_null(argv[0])) { + IDispatch *this_obj; hres = to_object(ctx, argv[0], &this_obj); if(FAILED(hres)) return hres; + this_val = jsval_disp(this_obj); + }else { + hres = jsval_copy(argv[0], &this_val); + if(FAILED(hres)) + return hres; } }
@@ -370,10 +376,11 @@ static HRESULT Function_apply(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsi
if(SUCCEEDED(hres)) { if(function) { - hres = function->vtbl->call(ctx, function, this_obj, flags, cnt, args, r); + hres = function->vtbl->call(ctx, function, this_val, flags, cnt, args, r); }else { jsval_t res; - hres = disp_call_value(ctx, get_object(vthis), this_obj, DISPATCH_METHOD, cnt, args, &res); + hres = disp_call_value(ctx, get_object(vthis), is_object_instance(this_val) ? get_object(this_val) : NULL, + DISPATCH_METHOD, cnt, args, &res); if(SUCCEEDED(hres)) { if(r) *r = res; @@ -383,8 +390,7 @@ static HRESULT Function_apply(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsi } }
- if(this_obj) - IDispatch_Release(this_obj); + jsval_release(this_val); for(i=0; i < cnt; i++) jsval_release(args[i]); heap_free(args); @@ -394,8 +400,8 @@ static HRESULT Function_apply(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsi static HRESULT Function_call(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv, jsval_t *r) { + jsval_t this_val = jsval_undefined(); FunctionInstance *function; - IDispatch *this_obj = NULL; unsigned cnt = 0; HRESULT hres;
@@ -405,19 +411,23 @@ static HRESULT Function_call(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsig return JS_E_FUNCTION_EXPECTED;
if(argc) { - if(!is_undefined(argv[0]) && !is_null(argv[0])) { + if(ctx->version < SCRIPTLANGUAGEVERSION_ES5 && !is_undefined(argv[0]) && !is_null(argv[0])) { + IDispatch *this_obj; hres = to_object(ctx, argv[0], &this_obj); if(FAILED(hres)) return hres; + this_val = jsval_disp(this_obj); + }else { + hres = jsval_copy(argv[0], &this_val); + if(FAILED(hres)) + return hres; } - cnt = argc-1; }
- hres = function->vtbl->call(ctx, function, this_obj, flags, cnt, argv + 1, r); + hres = function->vtbl->call(ctx, function, this_val, flags, cnt, argv + 1, r);
- if(this_obj) - IDispatch_Release(this_obj); + jsval_release(this_val); return hres; }
@@ -469,7 +479,7 @@ HRESULT Function_value(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned ar return E_FAIL; }
- return function->vtbl->call(ctx, function, NULL, flags, argc, argv, r); + return function->vtbl->call(ctx, function, vthis, flags, argc, argv, r); }
HRESULT Function_get_value(script_ctx_t *ctx, jsdisp_t *jsthis, jsval_t *r) @@ -590,16 +600,10 @@ static HRESULT create_function(script_ctx_t *ctx, const builtin_info_t *builtin_ return S_OK; }
-static HRESULT NativeFunction_call(script_ctx_t *ctx, FunctionInstance *func, IDispatch *this_disp, unsigned flags, +static HRESULT NativeFunction_call(script_ctx_t *ctx, FunctionInstance *func, jsval_t vthis, unsigned flags, unsigned argc, jsval_t *argv, jsval_t *r) { NativeFunction *function = (NativeFunction*)func; - jsval_t vthis; - - if(this_disp) - vthis = jsval_disp(this_disp); - else - vthis = jsval_null();
return function->proc(ctx, vthis, flags & ~DISPATCH_JSCRIPT_INTERNAL_MASK, argc, argv, r); } @@ -698,12 +702,13 @@ HRESULT create_builtin_constructor(script_ctx_t *ctx, builtin_invoke_t value_pro return S_OK; }
-static HRESULT InterpretedFunction_call(script_ctx_t *ctx, FunctionInstance *func, IDispatch *this_obj, unsigned flags, +static HRESULT InterpretedFunction_call(script_ctx_t *ctx, FunctionInstance *func, jsval_t vthis, unsigned flags, unsigned argc, jsval_t *argv, jsval_t *r) { InterpretedFunction *function = (InterpretedFunction*)func; - jsdisp_t *new_obj = NULL; + IDispatch *this_obj = NULL; DWORD exec_flags = 0; + jsdisp_t *new_obj; HRESULT hres;
TRACE("%p\n", function); @@ -718,6 +723,14 @@ static HRESULT InterpretedFunction_call(script_ctx_t *ctx, FunctionInstance *fun if(FAILED(hres)) return hres; this_obj = to_disp(new_obj); + }else if(is_object_instance(vthis)) { + this_obj = get_object(vthis); + if(this_obj) + IDispatch_AddRef(this_obj); + }else if(ctx->version >= SCRIPTLANGUAGEVERSION_ES5 && !is_undefined(vthis) && !is_null(vthis)) { + hres = to_object(ctx, vthis, &this_obj); + if(FAILED(hres)) + return hres; }
if(flags & DISPATCH_JSCRIPT_CALLEREXECSSOURCE) @@ -726,8 +739,8 @@ static HRESULT InterpretedFunction_call(script_ctx_t *ctx, FunctionInstance *fun exec_flags |= EXEC_CONSTRUCTOR; hres = exec_source(ctx, exec_flags, function->code, function->func_code, function->scope_chain, this_obj, &function->function.dispex, argc, argv, r); - if(new_obj) - jsdisp_release(new_obj); + if(this_obj) + IDispatch_Release(this_obj); return hres; }
@@ -801,7 +814,7 @@ HRESULT create_source_function(script_ctx_t *ctx, bytecode_t *code, function_cod return S_OK; }
-static HRESULT BindFunction_call(script_ctx_t *ctx, FunctionInstance *func, IDispatch *this_obj, unsigned flags, +static HRESULT BindFunction_call(script_ctx_t *ctx, FunctionInstance *func, jsval_t vthis, unsigned flags, unsigned argc, jsval_t *argv, jsval_t *r) { BindFunction *function = (BindFunction*)func; @@ -823,7 +836,8 @@ static HRESULT BindFunction_call(script_ctx_t *ctx, FunctionInstance *func, IDis memcpy(call_args + function->argc, argv, argc * sizeof(*call_args)); }
- hres = function->target->vtbl->call(ctx, function->target, function->this, flags, call_argc, call_args, r); + hres = function->target->vtbl->call(ctx, function->target, jsval_disp(function->this), + flags, call_argc, call_args, r);
heap_free(call_args); return hres; diff --git a/dlls/jscript/tests/api.js b/dlls/jscript/tests/api.js index 7e656b1..7cc7c16 100644 --- a/dlls/jscript/tests/api.js +++ b/dlls/jscript/tests/api.js @@ -3095,6 +3095,14 @@ ok(String.length == 1, "String.length = " + String.length); ok(r === "[object Error]", "Error.toString with undefined context returned " + r); r = String.prototype.slice.call(null, 1, 3); ok(r === "ul", "String.slice with null context returned " + r); + r = String.prototype.slice.call(undefined, 2, 5); + ok(r === "def", "String.slice with undefined context returned " + r); + r = (function() { return this; }).call(null); + ok(r === test, "wrong 'this' of function with null context"); + r = (function() { return this; }).call(undefined); + ok(r === test, "wrong 'this' of function with undefined context"); + r = (function() { return this; }).call(42); + ok(r.valueOf() === 42, "'this' of function with 42 context = " + r); })();
var tmp = createArray(); diff --git a/dlls/mshtml/tests/es5.js b/dlls/mshtml/tests/es5.js index 1da2eeb..fd45362 100644 --- a/dlls/mshtml/tests/es5.js +++ b/dlls/mshtml/tests/es5.js @@ -1272,6 +1272,10 @@ sync_test("builtin_context", function() {
var obj = (function() { return this; }).call(null); ok(obj === window, "obj = " + obj); + var obj = (function() { return this; }).call(undefined); + ok(obj === window, "obj = " + obj); + obj = (function() { return this; }).call(42); + ok(obj.valueOf() === 42, "obj = " + obj); });
sync_test("head_setter", function() {