Exemple #1
0
static duk_ret_t test_3(duk_context *ctx, void *udata) {
	(void) udata;

	duk_set_top(ctx, 0);
	duk_to_primitive(ctx, DUK_INVALID_INDEX, DUK_HINT_NONE);
	printf("index DUK_INVALID_INDEX OK\n");
	return 0;
}
Exemple #2
0
static duk_ret_t test_2(duk_context *ctx, void *udata) {
	(void) udata;

	duk_set_top(ctx, 0);
	duk_to_primitive(ctx, 3, DUK_HINT_NONE);
	printf("index 3 OK\n");
	return 0;
}
int duk_builtin_date_constructor(duk_context *ctx) {
	int nargs = duk_get_top(ctx);
	int is_cons = duk_is_constructor_call(ctx);
	double dparts[NUM_PARTS];
	double d;

	DUK_DDDPRINT("Date constructor, nargs=%d, is_cons=%d", nargs, is_cons);

	duk_push_object_helper(ctx,
	                       DUK_HOBJECT_FLAG_EXTENSIBLE |
	                       DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DATE),
	                       DUK_BIDX_DATE_PROTOTYPE);

	/* Unlike most built-ins, the internal [[PrimitiveValue]] of a Date
	 * is mutable.
	 */

	if (nargs == 0 || !is_cons) {
		d = timeclip(GET_NOW_TIMEVAL(ctx));
		duk_push_number(ctx, d);
		duk_def_prop_stridx(ctx, -2, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_W);
		if (!is_cons) {
			/* called as a normal function: return new Date().toString() */
			duk_to_string(ctx, -1);
		}
		return 1;
	} else if (nargs == 1) {
		duk_to_primitive(ctx, 0, DUK_HINT_NONE);
		if (duk_is_string(ctx, 0)) {
			parse_string(ctx, duk_to_string(ctx, 0));
			duk_replace(ctx, 0);  /* may be NaN */
		}
		d = timeclip(duk_to_number(ctx, 0));
		duk_push_number(ctx, d);
		duk_def_prop_stridx(ctx, -2, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_W);
		return 1;
	}

	set_parts_from_args(ctx, dparts, nargs);

	/* Parts are in local time, convert when setting. */

	set_this_timeval_from_dparts(ctx, dparts, FLAG_LOCALTIME /*flags*/);  /* -> [ ... this timeval ] */
	duk_pop(ctx);  /* -> [ ... this ] */
	return 1;
}
Exemple #4
0
static duk_ret_t test_1(duk_context *ctx, void *udata) {
	duk_idx_t i, n;

	(void) udata;

	duk_set_top(ctx, 0);
	duk_push_undefined(ctx);
	duk_push_null(ctx);
	duk_push_true(ctx);
	duk_push_false(ctx);
	duk_push_int(ctx, 0);
	duk_push_int(ctx, 1);
	duk_push_nan(ctx);
	duk_push_number(ctx, INFINITY);
	duk_push_string(ctx, "");
	duk_push_string(ctx, "foo");
	duk_push_object(ctx);
	duk_push_number(ctx, 123.456);
	duk_to_object(ctx, -1);  /* Number(123.456) */
	duk_push_thread(ctx);
	duk_push_fixed_buffer(ctx, 0);
	duk_push_fixed_buffer(ctx, 1024);
	duk_push_dynamic_buffer(ctx, 0);
	duk_push_dynamic_buffer(ctx, 1024);
	duk_push_pointer(ctx, (void *) NULL);
	duk_push_pointer(ctx, (void *) 0xdeadbeef);

	n = duk_get_top(ctx);
	printf("top: %ld\n", (long) n);
	for (i = 0; i < n; i++) {
		duk_int_t t1, t2;

		t1 = duk_get_type(ctx, i);
		duk_to_primitive(ctx, i, DUK_HINT_NONE);
		t2 = duk_get_type(ctx, i);

		printf("index %ld, ToString(result): '%s', type: %ld -> %ld\n",
		       (long) i, duk_to_string(ctx, i), (long) t1, (long) t2);
	}

	return 0;
}
int duk_builtin_date_prototype_to_json(duk_context *ctx) {
	/* Note: toJSON() is a generic function which works even if 'this'
	 * is not a Date.  The sole argument is ignored.
	 */

	duk_push_this(ctx);
	duk_to_object(ctx, -1);

	duk_dup_top(ctx);
	duk_to_primitive(ctx, -1, DUK_HINT_NUMBER);
	if (duk_is_number(ctx, -1)) {
		double d = duk_get_number(ctx, -1);
		if (!DUK_ISFINITE(d)) {
			duk_push_null(ctx);
			return 1;
		}
	}
	duk_pop(ctx);

	duk_get_prop_stridx(ctx, -1, DUK_STRIDX_TO_ISO_STRING);
	duk_dup(ctx, -2);  /* -> [ O toIsoString O ] */
	duk_call_method(ctx, 0);
	return 1;
}
static duk_ret_t test_func(duk_context *ctx, void *udata) {
	(void) udata;

	if (ctx) {
		printf("dummy - return here\n"); fflush(stdout);
		return 0;
	}

	/* Up-to-date for Duktape 1.3.0, alphabetical order:
	 * $ cd website/api; ls *.yaml
	 */

	(void) duk_alloc_raw(ctx, 0);
	(void) duk_alloc(ctx, 0);
	(void) duk_base64_decode(ctx, 0);
	(void) duk_base64_encode(ctx, 0);
	(void) duk_buffer_to_string(ctx, 0);
	(void) duk_call_method(ctx, 0);
	(void) duk_call_prop(ctx, 0, 0);
	(void) duk_call(ctx, 0);
	(void) duk_char_code_at(ctx, 0, 0);
	(void) duk_check_stack_top(ctx, 0);
	(void) duk_check_stack(ctx, 0);
	(void) duk_check_type_mask(ctx, 0, 0);
	(void) duk_check_type(ctx, 0, 0);
	(void) duk_compact(ctx, 0);
	(void) duk_compile_lstring_filename(ctx, 0, "dummy", 0);
	(void) duk_compile_lstring(ctx, 0, "dummy", 0);
	(void) duk_compile_string_filename(ctx, 0, "dummy");
	(void) duk_compile_string(ctx, 0, "dummy");
	(void) duk_compile(ctx, 0);
	(void) duk_concat(ctx, 0);
	(void) duk_config_buffer(ctx, 0, NULL, 0);
	(void) duk_copy(ctx, 0, 0);
	(void) duk_create_heap_default();
	(void) duk_create_heap(NULL, NULL, NULL, NULL, NULL);
	(void) duk_debugger_attach(ctx, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
	(void) duk_debugger_cooperate(ctx);
	(void) duk_debugger_detach(ctx);
	(void) duk_debugger_notify(ctx, 0);
	(void) duk_debugger_pause(ctx);
	(void) duk_decode_string(ctx, 0, NULL, NULL);
	(void) duk_def_prop(ctx, 0, 0);
	(void) duk_del_prop_index(ctx, 0, 0);
	(void) duk_del_prop_string(ctx, 0, "dummy");
	(void) duk_del_prop(ctx, 0);
	(void) duk_destroy_heap(ctx);
	(void) duk_dump_function(ctx);
	(void) duk_dup_top(ctx);
	(void) duk_dup(ctx, 0);
	(void) duk_enum(ctx, 0, 0);
	(void) duk_equals(ctx, 0, 0);
	duk_error_va(ctx, 0, NULL, NULL);
	duk_error(ctx, 0, "dummy");  /* (void) cast won't work without variadic macros */
	(void) duk_eval_lstring_noresult(ctx, "dummy", 0);
	(void) duk_eval_lstring(ctx, "dummy", 0);
	(void) duk_eval_noresult(ctx);
	(void) duk_eval_string_noresult(ctx, "dummy");
	(void) duk_eval_string(ctx, "dummy");
	(void) duk_eval(ctx);
	(void) duk_fatal(ctx, "dummy");
	(void) duk_free_raw(ctx, NULL);
	(void) duk_free(ctx, NULL);
	(void) duk_gc(ctx, 0);
	(void) duk_get_boolean(ctx, 0);
	(void) duk_get_buffer_data(ctx, 0, NULL);
	(void) duk_get_buffer(ctx, 0, NULL);
	(void) duk_get_c_function(ctx, 0);
	(void) duk_get_context(ctx, 0);
	(void) duk_get_current_magic(ctx);
	(void) duk_get_error_code(ctx, 0);
	(void) duk_get_finalizer(ctx, 0);
	(void) duk_get_global_string(ctx, 0);
	(void) duk_get_heapptr(ctx, 0);
	(void) duk_get_int(ctx, 0);
	(void) duk_get_length(ctx, 0);
	(void) duk_get_lstring(ctx, 0, NULL);
	(void) duk_get_magic(ctx, 0);
	(void) duk_get_memory_functions(ctx, NULL);
	(void) duk_get_number(ctx, 0);
	(void) duk_get_pointer(ctx, 0);
	(void) duk_get_prop_index(ctx, 0, 0);
	(void) duk_get_prop_string(ctx, 0, "dummy");
	(void) duk_get_prop(ctx, 0);
	(void) duk_get_prototype(ctx, 0);
	(void) duk_get_string(ctx, 0);
	(void) duk_get_top_index(ctx);
	(void) duk_get_top(ctx);
	(void) duk_get_type_mask(ctx, 0);
	(void) duk_get_type(ctx, 0);
	(void) duk_get_uint(ctx, 0);
	(void) duk_has_prop_index(ctx, 0, 0);
	(void) duk_has_prop_string(ctx, 0, "dummy");
	(void) duk_has_prop(ctx, 0);
	(void) duk_hex_decode(ctx, 0);
	(void) duk_hex_encode(ctx, 0);
	(void) duk_insert(ctx, 0);
	(void) duk_instanceof(ctx, 0, 0);
	(void) duk_is_array(ctx, 0);
	(void) duk_is_boolean(ctx, 0);
	(void) duk_is_bound_function(ctx, 0);
	(void) duk_is_buffer(ctx, 0);
	(void) duk_is_callable(ctx, 0);
	(void) duk_is_c_function(ctx, 0);
	(void) duk_is_constructor_call(ctx);
	(void) duk_is_dynamic_buffer(ctx, 0);
	(void) duk_is_ecmascript_function(ctx, 0);
	(void) duk_is_error(ctx, 0);
	(void) duk_is_eval_error(ctx, 0);
	(void) duk_is_fixed_buffer(ctx, 0);
	(void) duk_is_function(ctx, 0);
	(void) duk_is_lightfunc(ctx, 0);
	(void) duk_is_nan(ctx, 0);
	(void) duk_is_null_or_undefined(ctx, 0);
	(void) duk_is_null(ctx, 0);
	(void) duk_is_number(ctx, 0);
	(void) duk_is_object_coercible(ctx, 0);
	(void) duk_is_object(ctx, 0);
	(void) duk_is_pointer(ctx, 0);
	(void) duk_is_primitive(ctx, 0);
	(void) duk_is_range_error(ctx, 0);
	(void) duk_is_reference_error(ctx, 0);
	(void) duk_is_strict_call(ctx);
	(void) duk_is_string(ctx, 0);
	(void) duk_is_syntax_error(ctx, 0);
	(void) duk_is_thread(ctx, 0);
	(void) duk_is_type_error(ctx, 0);
	(void) duk_is_undefined(ctx, 0);
	(void) duk_is_uri_error(ctx, 0);
	(void) duk_is_valid_index(ctx, 0);
	(void) duk_join(ctx, 0);
	(void) duk_json_decode(ctx, 0);
	(void) duk_json_encode(ctx, 0);
	(void) duk_load_function(ctx);
	(void) duk_map_string(ctx, 0, NULL, NULL);
	(void) duk_new(ctx, 0);
	(void) duk_next(ctx, 0, 0);
	(void) duk_normalize_index(ctx, 0);
	(void) duk_pcall_method(ctx, 0);
	(void) duk_pcall_prop(ctx, 0, 0);
	(void) duk_pcall(ctx, 0);
	(void) duk_pcompile_lstring_filename(ctx, 0, "dummy", 0);
	(void) duk_pcompile_lstring(ctx, 0, "dummy", 0);
	(void) duk_pcompile_string_filename(ctx, 0, "dummy");
	(void) duk_pcompile_string(ctx, 0, "dummy");
	(void) duk_pcompile(ctx, 0);
	(void) duk_peval_lstring_noresult(ctx, "dummy", 0);
	(void) duk_peval_lstring(ctx, "dummy", 0);
	(void) duk_peval_noresult(ctx);
	(void) duk_peval_string_noresult(ctx, "dummy");
	(void) duk_peval_string(ctx, "dummy");
	(void) duk_peval(ctx);
	(void) duk_pnew(ctx, 0);
	(void) duk_pop_2(ctx);
	(void) duk_pop_3(ctx);
	(void) duk_pop_n(ctx, 0);
	(void) duk_pop(ctx);
	(void) duk_push_array(ctx);
	(void) duk_push_boolean(ctx, 0);
	(void) duk_push_buffer_object(ctx, 0, 0, 0, 0);
	(void) duk_push_buffer(ctx, 0, 0);
	(void) duk_push_c_function(ctx, NULL, 0);
	(void) duk_push_c_lightfunc(ctx, NULL, 0, 0, 0);
	(void) duk_push_context_dump(ctx);
	(void) duk_push_current_function(ctx);
	(void) duk_push_current_thread(ctx);
	(void) duk_push_dynamic_buffer(ctx, 0);
	(void) duk_push_error_object_va(ctx, 0, NULL, NULL);
	(void) duk_push_error_object(ctx, 0, "dummy");
	(void) duk_push_external_buffer(ctx);
	(void) duk_push_false(ctx);
	(void) duk_push_fixed_buffer(ctx, 0);
	(void) duk_push_global_object(ctx);
	(void) duk_push_global_stash(ctx);
	(void) duk_push_heap_stash(ctx);
	(void) duk_push_heapptr(ctx, NULL);
	(void) duk_push_int(ctx, 0);
	(void) duk_push_lstring(ctx, "dummy", 0);
	(void) duk_push_nan(ctx);
	(void) duk_push_null(ctx);
	(void) duk_push_number(ctx, 0.0);
	(void) duk_push_object(ctx);
	(void) duk_push_pointer(ctx, NULL);
	(void) duk_push_sprintf(ctx, "dummy");
	(void) duk_push_string(ctx, "dummy");
	(void) duk_push_this(ctx);
	(void) duk_push_thread_new_globalenv(ctx);
	(void) duk_push_thread_stash(ctx, NULL);
	(void) duk_push_thread(ctx);
	(void) duk_push_true(ctx);
	(void) duk_push_uint(ctx, 0);
	(void) duk_push_undefined(ctx);
	(void) duk_push_vsprintf(ctx, "dummy", NULL);
	(void) duk_put_function_list(ctx, 0, NULL);
	(void) duk_put_global_string(ctx, NULL);
	(void) duk_put_number_list(ctx, 0, NULL);
	(void) duk_put_prop_index(ctx, 0, 0);
	(void) duk_put_prop_string(ctx, 0, "dummy");
	(void) duk_put_prop(ctx, 0);
	(void) duk_realloc_raw(ctx, NULL, 0);
	(void) duk_realloc(ctx, NULL, 0);
	(void) duk_remove(ctx, 0);
	(void) duk_replace(ctx, 0);
	(void) duk_require_boolean(ctx, 0);
	(void) duk_require_buffer_data(ctx, 0, NULL);
	(void) duk_require_buffer(ctx, 0, NULL);
	(void) duk_require_c_function(ctx, 0);
	(void) duk_require_callable(ctx, 0);
	(void) duk_require_context(ctx, 0);
	(void) duk_require_function(ctx, 0);
	(void) duk_require_heapptr(ctx, 0);
	(void) duk_require_int(ctx, 0);
	(void) duk_require_lstring(ctx, 0, NULL);
	(void) duk_require_normalize_index(ctx, 0);
	(void) duk_require_null(ctx, 0);
	(void) duk_require_number(ctx, 0);
	(void) duk_require_object_coercible(ctx, 0);
	(void) duk_require_pointer(ctx, 0);
	(void) duk_require_stack_top(ctx, 0);
	(void) duk_require_stack(ctx, 0);
	(void) duk_require_string(ctx, 0);
	(void) duk_require_top_index(ctx);
	(void) duk_require_type_mask(ctx, 0, 0);
	(void) duk_require_uint(ctx, 0);
	(void) duk_require_undefined(ctx, 0);
	(void) duk_require_valid_index(ctx, 0);
	(void) duk_resize_buffer(ctx, 0, 0);
	(void) duk_safe_call(ctx, NULL, NULL, 0, 0);
	(void) duk_safe_to_lstring(ctx, 0, NULL);
	(void) duk_safe_to_string(ctx, 0);
	(void) duk_set_finalizer(ctx, 0);
	(void) duk_set_global_object(ctx);
	(void) duk_set_magic(ctx, 0, 0);
	(void) duk_set_prototype(ctx, 0);
	(void) duk_set_top(ctx, 0);
	(void) duk_steal_buffer(ctx, 0, NULL);
	(void) duk_strict_equals(ctx, 0, 0);
	(void) duk_substring(ctx, 0, 0, 0);
	(void) duk_swap_top(ctx, 0);
	(void) duk_swap(ctx, 0, 0);
	(void) duk_throw(ctx);
	(void) duk_to_boolean(ctx, 0);
	(void) duk_to_buffer(ctx, 0, NULL);
	(void) duk_to_defaultvalue(ctx, 0, 0);
	(void) duk_to_dynamic_buffer(ctx, 0, NULL);
	(void) duk_to_fixed_buffer(ctx, 0, NULL);
	(void) duk_to_int32(ctx, 0);
	(void) duk_to_int(ctx, 0);
	(void) duk_to_lstring(ctx, 0, NULL);
	(void) duk_to_null(ctx, 0);
	(void) duk_to_number(ctx, 0);
	(void) duk_to_object(ctx, 0);
	(void) duk_to_pointer(ctx, 0);
	(void) duk_to_primitive(ctx, 0, 0);
	(void) duk_to_string(ctx, 0);
	(void) duk_to_uint16(ctx, 0);
	(void) duk_to_uint32(ctx, 0);
	(void) duk_to_uint(ctx, 0);
	(void) duk_to_undefined(ctx, 0);
	(void) duk_trim(ctx, 0);
	(void) duk_xcopy_top(ctx, NULL, 0);
	(void) duk_xmove_top(ctx, NULL, 0);

	printf("never here\n"); fflush(stdout);
	return 0;
}
Exemple #7
0
DUK_INTERNAL duk_bool_t duk_js_compare_helper(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y, duk_small_int_t flags) {
	duk_context *ctx = (duk_context *) thr;
	duk_double_t d1, d2;
	duk_small_int_t c1, c2;
	duk_small_int_t s1, s2;
	duk_small_int_t rc;
	duk_bool_t retval;

	/* Fast path for fastints */
#if defined(DUK_USE_FASTINT)
	if (DUK_TVAL_IS_FASTINT(tv_x) && DUK_TVAL_IS_FASTINT(tv_y)) {
		duk_int64_t v1 = DUK_TVAL_GET_FASTINT(tv_x);
		duk_int64_t v2 = DUK_TVAL_GET_FASTINT(tv_y);
		if (v1 < v2) {
			/* 'lt is true' */
			retval = 1;
		} else {
			retval = 0;
		}
		if (flags & DUK_COMPARE_FLAG_NEGATE) {
			retval ^= 1;
		}
		return retval;
	}
#endif  /* DUK_USE_FASTINT */

	/* Fast path for numbers (one of which may be a fastint) */
#if 1  /* XXX: make fast paths optional for size minimization? */
	if (DUK_TVAL_IS_NUMBER(tv_x) && DUK_TVAL_IS_NUMBER(tv_y)) {
		d1 = DUK_TVAL_GET_NUMBER(tv_x);
		d2 = DUK_TVAL_GET_NUMBER(tv_y);
		c1 = DUK_FPCLASSIFY(d1);
		c2 = DUK_FPCLASSIFY(d2);

		if (c1 == DUK_FP_NORMAL && c2 == DUK_FP_NORMAL) {
			/* XXX: this is a very narrow check, and doesn't cover
			 * zeroes, subnormals, infinities, which compare normally.
			 */

			if (d1 < d2) {
				/* 'lt is true' */
				retval = 1;
			} else {
				retval = 0;
			}
			if (flags & DUK_COMPARE_FLAG_NEGATE) {
				retval ^= 1;
			}
			return retval;
		}
	}
#endif

	/* Slow path */

	duk_push_tval(ctx, tv_x);
	duk_push_tval(ctx, tv_y);

	if (flags & DUK_COMPARE_FLAG_EVAL_LEFT_FIRST) {
		duk_to_primitive(ctx, -2, DUK_HINT_NUMBER);
		duk_to_primitive(ctx, -1, DUK_HINT_NUMBER);
	} else {
		duk_to_primitive(ctx, -1, DUK_HINT_NUMBER);
		duk_to_primitive(ctx, -2, DUK_HINT_NUMBER);
	}

	/* Note: reuse variables */
	tv_x = duk_get_tval(ctx, -2);
	tv_y = duk_get_tval(ctx, -1);

	if (DUK_TVAL_IS_STRING(tv_x) && DUK_TVAL_IS_STRING(tv_y)) {
		duk_hstring *h1 = DUK_TVAL_GET_STRING(tv_x);
		duk_hstring *h2 = DUK_TVAL_GET_STRING(tv_y);
		DUK_ASSERT(h1 != NULL);
		DUK_ASSERT(h2 != NULL);

		rc = duk_js_string_compare(h1, h2);
		if (rc < 0) {
			goto lt_true;
		} else {
			goto lt_false;
		}
	} else {
		/* Ordering should not matter (E5 Section 11.8.5, step 3.a) but
		 * preserve it just in case.
		 */

		if (flags & DUK_COMPARE_FLAG_EVAL_LEFT_FIRST) {
			d1 = duk_to_number(ctx, -2);
			d2 = duk_to_number(ctx, -1);
		} else {
			d2 = duk_to_number(ctx, -1);
			d1 = duk_to_number(ctx, -2);
		}

		c1 = (duk_small_int_t) DUK_FPCLASSIFY(d1);
		s1 = (duk_small_int_t) DUK_SIGNBIT(d1);
		c2 = (duk_small_int_t) DUK_FPCLASSIFY(d2);
		s2 = (duk_small_int_t) DUK_SIGNBIT(d2);

		if (c1 == DUK_FP_NAN || c2 == DUK_FP_NAN) {
			goto lt_undefined;
		}

		if (c1 == DUK_FP_ZERO && c2 == DUK_FP_ZERO) {
			/* For all combinations: +0 < +0, +0 < -0, -0 < +0, -0 < -0,
			 * steps e, f, and g.
			 */
			goto lt_false;
		}

		if (d1 == d2) {
			goto lt_false;
		}

		if (c1 == DUK_FP_INFINITE && s1 == 0) {
			/* x == +Infinity */
			goto lt_false;
		}

		if (c2 == DUK_FP_INFINITE && s2 == 0) {
			/* y == +Infinity */
			goto lt_true;
		}

		if (c2 == DUK_FP_INFINITE && s2 != 0) {
			/* y == -Infinity */
			goto lt_false;
		}

		if (c1 == DUK_FP_INFINITE && s1 != 0) {
			/* x == -Infinity */
			goto lt_true;
		}

		if (d1 < d2) {
			goto lt_true;
		}

		goto lt_false;
	}

 lt_undefined:
	/* Note: undefined from Section 11.8.5 always results in false
	 * return (see e.g. Section 11.8.3) - hence special treatment here.
	 */
	retval = 0;
	goto cleanup;

 lt_true:
	if (flags & DUK_COMPARE_FLAG_NEGATE) {
		retval = 0;
		goto cleanup;
	} else {
		retval = 1;
		goto cleanup;
	}
	/* never here */

 lt_false:
	if (flags & DUK_COMPARE_FLAG_NEGATE) {
		retval = 1;
		goto cleanup;
	} else {
		retval = 0;
		goto cleanup;
	}
	/* never here */

 cleanup:
	duk_pop_2(ctx);
	return retval;
}
Exemple #8
0
DUK_INTERNAL duk_bool_t duk_js_equals_helper(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y, duk_small_int_t flags) {
	duk_context *ctx = (duk_context *) thr;
	duk_tval *tv_tmp;

	/* If flags != 0 (strict or SameValue), thr can be NULL.  For loose
	 * equals comparison it must be != NULL.
	 */
	DUK_ASSERT(flags != 0 || thr != NULL);

	/*
	 *  Same type?
	 *
	 *  Note: since number values have no explicit tag in the 8-byte
	 *  representation, need the awkward if + switch.
	 */

#if defined(DUK_USE_FASTINT)
	if (DUK_TVAL_IS_FASTINT(tv_x) && DUK_TVAL_IS_FASTINT(tv_y)) {
		if (DUK_TVAL_GET_FASTINT(tv_x) == DUK_TVAL_GET_FASTINT(tv_y)) {
			return 1;
		} else {
			return 0;
		}
	}
	else
#endif
	if (DUK_TVAL_IS_NUMBER(tv_x) && DUK_TVAL_IS_NUMBER(tv_y)) {
		/* Catches both doubles and cases where only one argument is a fastint */
		if (DUK_UNLIKELY((flags & DUK_EQUALS_FLAG_SAMEVALUE) != 0)) {
			/* SameValue */
			return duk__js_samevalue_number(DUK_TVAL_GET_NUMBER(tv_x),
			                                DUK_TVAL_GET_NUMBER(tv_y));
		} else {
			/* equals and strict equals */
			return duk__js_equals_number(DUK_TVAL_GET_NUMBER(tv_x),
			                             DUK_TVAL_GET_NUMBER(tv_y));
		}
	} else if (DUK_TVAL_GET_TAG(tv_x) == DUK_TVAL_GET_TAG(tv_y)) {
		switch (DUK_TVAL_GET_TAG(tv_x)) {
		case DUK_TAG_UNDEFINED:
		case DUK_TAG_NULL: {
			return 1;
		}
		case DUK_TAG_BOOLEAN: {
			return DUK_TVAL_GET_BOOLEAN(tv_x) == DUK_TVAL_GET_BOOLEAN(tv_y);
		}
		case DUK_TAG_POINTER: {
			return DUK_TVAL_GET_POINTER(tv_x) == DUK_TVAL_GET_POINTER(tv_y);
		}
		case DUK_TAG_STRING:
		case DUK_TAG_OBJECT: {
			/* heap pointer comparison suffices */
			return DUK_TVAL_GET_HEAPHDR(tv_x) == DUK_TVAL_GET_HEAPHDR(tv_y);
		}
		case DUK_TAG_BUFFER: {
			if ((flags & (DUK_EQUALS_FLAG_STRICT | DUK_EQUALS_FLAG_SAMEVALUE)) != 0) {
				/* heap pointer comparison suffices */
				return DUK_TVAL_GET_HEAPHDR(tv_x) == DUK_TVAL_GET_HEAPHDR(tv_y);
			} else {
				/* non-strict equality for buffers compares contents */
				duk_hbuffer *h_x = DUK_TVAL_GET_BUFFER(tv_x);
				duk_hbuffer *h_y = DUK_TVAL_GET_BUFFER(tv_y);
				duk_size_t len_x = DUK_HBUFFER_GET_SIZE(h_x);
				duk_size_t len_y = DUK_HBUFFER_GET_SIZE(h_y);
				void *buf_x;
				void *buf_y;
				if (len_x != len_y) {
					return 0;
				}
				buf_x = (void *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_x);
				buf_y = (void *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_y);
				/* if len_x == len_y == 0, buf_x and/or buf_y may
				 * be NULL, but that's OK.
				 */
				DUK_ASSERT(len_x == len_y);
				DUK_ASSERT(len_x == 0 || buf_x != NULL);
				DUK_ASSERT(len_y == 0 || buf_y != NULL);
				return (DUK_MEMCMP(buf_x, buf_y, len_x) == 0) ? 1 : 0;
			}
		}
		case DUK_TAG_LIGHTFUNC: {
			/* At least 'magic' has a significant impact on function
			 * identity.
			 */
			duk_small_uint_t lf_flags_x;
			duk_small_uint_t lf_flags_y;
			duk_c_function func_x;
			duk_c_function func_y;

			DUK_TVAL_GET_LIGHTFUNC(tv_x, func_x, lf_flags_x);
			DUK_TVAL_GET_LIGHTFUNC(tv_y, func_y, lf_flags_y);
			return ((func_x == func_y) && (lf_flags_x == lf_flags_y)) ? 1 : 0;
		}
#if defined(DUK_USE_FASTINT)
		case DUK_TAG_FASTINT:
#endif
		default: {
			DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_x));
			DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_y));
			DUK_UNREACHABLE();
			return 0;
		}
		}
	}

	if ((flags & (DUK_EQUALS_FLAG_STRICT | DUK_EQUALS_FLAG_SAMEVALUE)) != 0) {
		return 0;
	}

	DUK_ASSERT(flags == 0);  /* non-strict equality from here on */

	/*
	 *  Types are different; various cases for non-strict comparison
	 *
	 *  Since comparison is symmetric, we use a "swap trick" to reduce
	 *  code size.
	 */

	/* Undefined/null are considered equal (e.g. "null == undefined" -> true). */
	if ((DUK_TVAL_IS_UNDEFINED(tv_x) && DUK_TVAL_IS_NULL(tv_y)) ||
	    (DUK_TVAL_IS_NULL(tv_x) && DUK_TVAL_IS_UNDEFINED(tv_y))) {
		return 1;
	}

	/* Number/string-or-buffer -> coerce string to number (e.g. "'1.5' == 1.5" -> true). */
	if (DUK_TVAL_IS_NUMBER(tv_x) && (DUK_TVAL_IS_STRING(tv_y) || DUK_TVAL_IS_BUFFER(tv_y))) {
		/* the next 'if' is guaranteed to match after swap */
		tv_tmp = tv_x;
		tv_x = tv_y;
		tv_y = tv_tmp;
	}
	if ((DUK_TVAL_IS_STRING(tv_x) || DUK_TVAL_IS_BUFFER(tv_x)) && DUK_TVAL_IS_NUMBER(tv_y)) {
		/* XXX: this is possible without resorting to the value stack */
		duk_double_t d1, d2;
		d2 = DUK_TVAL_GET_NUMBER(tv_y);
		duk_push_tval(ctx, tv_x);
		duk_to_string(ctx, -1);  /* buffer values are coerced first to string here */
		duk_to_number(ctx, -1);
		d1 = duk_require_number(ctx, -1);
		duk_pop(ctx);
		return duk__js_equals_number(d1, d2);
	}

	/* Buffer/string -> compare contents. */
	if (DUK_TVAL_IS_BUFFER(tv_x) && DUK_TVAL_IS_STRING(tv_y)) {
		tv_tmp = tv_x;
		tv_x = tv_y;
		tv_y = tv_tmp;
	}
	if (DUK_TVAL_IS_STRING(tv_x) && DUK_TVAL_IS_BUFFER(tv_y)) {
		duk_hstring *h_x = DUK_TVAL_GET_STRING(tv_x);
		duk_hbuffer *h_y = DUK_TVAL_GET_BUFFER(tv_y);
		duk_size_t len_x = DUK_HSTRING_GET_BYTELEN(h_x);
		duk_size_t len_y = DUK_HBUFFER_GET_SIZE(h_y);
		void *buf_x;
		void *buf_y;
		if (len_x != len_y) {
			return 0;
		}
		buf_x = (void *) DUK_HSTRING_GET_DATA(h_x);
		buf_y = (void *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_y);
		/* if len_x == len_y == 0, buf_x and/or buf_y may
		 * be NULL, but that's OK.
		 */
		DUK_ASSERT(len_x == len_y);
		DUK_ASSERT(len_x == 0 || buf_x != NULL);
		DUK_ASSERT(len_y == 0 || buf_y != NULL);
		return (DUK_MEMCMP(buf_x, buf_y, len_x) == 0) ? 1 : 0;
	}

	/* Boolean/any -> coerce boolean to number and try again.  If boolean is
	 * compared to a pointer, the final comparison after coercion now always
	 * yields false (as pointer vs. number compares to false), but this is
	 * not special cased.
	 */
	if (DUK_TVAL_IS_BOOLEAN(tv_x)) {
		tv_tmp = tv_x;
		tv_x = tv_y;
		tv_y = tv_tmp;
	}
	if (DUK_TVAL_IS_BOOLEAN(tv_y)) {
		/* ToNumber(bool) is +1.0 or 0.0.  Tagged boolean value is always 0 or 1. */
		duk_bool_t rc;
		DUK_ASSERT(DUK_TVAL_GET_BOOLEAN(tv_y) == 0 || DUK_TVAL_GET_BOOLEAN(tv_y) == 1);
		duk_push_tval(ctx, tv_x);
		duk_push_int(ctx, DUK_TVAL_GET_BOOLEAN(tv_y));
		rc = duk_js_equals_helper(thr, duk_get_tval(ctx, -2), duk_get_tval(ctx, -1), 0 /*flags:nonstrict*/);
		duk_pop_2(ctx);
		return rc;
	}

	/* String-number-buffer/object -> coerce object to primitive (apparently without hint), then try again. */
	if ((DUK_TVAL_IS_STRING(tv_x) || DUK_TVAL_IS_NUMBER(tv_x) || DUK_TVAL_IS_BUFFER(tv_x)) &&
	    DUK_TVAL_IS_OBJECT(tv_y)) {
		tv_tmp = tv_x;
		tv_x = tv_y;
		tv_y = tv_tmp;
	}
	if (DUK_TVAL_IS_OBJECT(tv_x) &&
	    (DUK_TVAL_IS_STRING(tv_y) || DUK_TVAL_IS_NUMBER(tv_y) || DUK_TVAL_IS_BUFFER(tv_y))) {
		duk_bool_t rc;
		duk_push_tval(ctx, tv_x);
		duk_push_tval(ctx, tv_y);
		duk_to_primitive(ctx, -2, DUK_HINT_NONE);  /* apparently no hint? */
		rc = duk_js_equals_helper(thr, duk_get_tval(ctx, -2), duk_get_tval(ctx, -1), 0 /*flags:nonstrict*/);
		duk_pop_2(ctx);
		return rc;
	}

	/* Nothing worked -> not equal. */
	return 0;
}
Exemple #9
0
void duk_to_defaultvalue(duk_context *ctx, duk_idx_t idx, duk_int_t hint) {
	duk_require_type_mask(ctx, idx, DUK_TYPE_MASK_OBJECT |
	                                DUK_TYPE_MASK_BUFFER |
	                                DUK_TYPE_MASK_LIGHTFUNC);
	duk_to_primitive(ctx, idx, hint);
}
//void duk_to_primitive(duk_context *ctx, duk_idx_t index, duk_int_t hint);
void aperl_duk_to_primitive(duk_context *ctx, duk_idx_t index, duk_int_t hint) {
	duk_to_primitive(ctx, index, hint);
}
Exemple #11
0
duk_bool_t duk_js_compare_helper(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y, duk_small_int_t flags) {
	duk_context *ctx = (duk_context *) thr;
	duk_double_t d1, d2;
	duk_small_int_t c1, c2;
	duk_small_int_t s1, s2;
	duk_small_int_t rc;
	duk_bool_t retval;

	duk_push_tval(ctx, tv_x);
	duk_push_tval(ctx, tv_y);

	if (flags & DUK_COMPARE_FLAG_EVAL_LEFT_FIRST) {
		duk_to_primitive(ctx, -2, DUK_HINT_NUMBER);
		duk_to_primitive(ctx, -1, DUK_HINT_NUMBER);
	} else {
		duk_to_primitive(ctx, -1, DUK_HINT_NUMBER);
		duk_to_primitive(ctx, -2, DUK_HINT_NUMBER);
	}

	/* Note: reuse variables */
	tv_x = duk_get_tval(ctx, -2);
	tv_y = duk_get_tval(ctx, -1);

	if (DUK_TVAL_IS_STRING(tv_x) && DUK_TVAL_IS_STRING(tv_y)) {
		duk_hstring *h1 = DUK_TVAL_GET_STRING(tv_x);
		duk_hstring *h2 = DUK_TVAL_GET_STRING(tv_y);
		DUK_ASSERT(h1 != NULL);
		DUK_ASSERT(h2 != NULL);

		rc = duk_js_string_compare(h1, h2);
		if (rc < 0) {
			goto lt_true;
		} else {
			goto lt_false;
		}
	} else {
		/* Ordering should not matter (E5 Section 11.8.5, step 3.a) but
		 * preserve it just in case.
		 */

		if (flags & DUK_COMPARE_FLAG_EVAL_LEFT_FIRST) {
			d1 = duk_to_number(ctx, -2);
			d2 = duk_to_number(ctx, -1);
		} else {
			d2 = duk_to_number(ctx, -1);
			d1 = duk_to_number(ctx, -2);
		}

		c1 = (duk_small_int_t) DUK_FPCLASSIFY(d1);
		s1 = (duk_small_int_t) DUK_SIGNBIT(d1);
		c2 = (duk_small_int_t) DUK_FPCLASSIFY(d2);
		s2 = (duk_small_int_t) DUK_SIGNBIT(d2);

		if (c1 == DUK_FP_NAN || c2 == DUK_FP_NAN) {
			goto lt_undefined;
		}

		if (c1 == DUK_FP_ZERO && c2 == DUK_FP_ZERO) {
			/* For all combinations: +0 < +0, +0 < -0, -0 < +0, -0 < -0,
			 * steps e, f, and g.
			 */
			goto lt_false;
		}

		if (d1 == d2) {
			goto lt_false;
		}

		if (c1 == DUK_FP_INFINITE && s1 == 0) {
			/* x == +Infinity */
			goto lt_false;
		}

		if (c2 == DUK_FP_INFINITE && s2 == 0) {
			/* y == +Infinity */
			goto lt_true;
		}

		if (c2 == DUK_FP_INFINITE && s2 != 0) {
			/* y == -Infinity */
			goto lt_false;
		}

		if (c1 == DUK_FP_INFINITE && s1 != 0) {
			/* x == -Infinity */
			goto lt_true;
		}

		if (d1 < d2) {
			goto lt_true;
		}

		goto lt_false;
	}

 lt_undefined:
	/* Note: undefined from Section 11.8.5 always results in false
	 * return (see e.g. Section 11.8.3) - hence special treatment here.
	 */
	retval = 0;
	goto cleanup;

 lt_true:
	if (flags & DUK_COMPARE_FLAG_NEGATE) {
		retval = 0;
		goto cleanup;
	} else {
		retval = 1;
		goto cleanup;
	}
	/* never here */

 lt_false:
	if (flags & DUK_COMPARE_FLAG_NEGATE) {
		retval = 1;
		goto cleanup;
	} else {
		retval = 0;
		goto cleanup;
	}
	/* never here */

 cleanup:
	duk_pop_2(ctx);
	return retval;
}