details: http://hg.nginx.org/njs/rev/b2ccd7673a5e branches: changeset: 368:b2ccd7673a5e user: Dmitry Volyntsev <xei...@nginx.com> date: Mon Jun 19 14:41:03 2017 +0300 description: Object.isFrozen() method.
diffstat: njs/njs_object.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++ njs/test/njs_unit_test.c | 51 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 107 insertions(+), 0 deletions(-) diffs (134 lines): diff -r 4d5a5d618fca -r b2ccd7673a5e njs/njs_object.c --- a/njs/njs_object.c Mon Jun 19 14:40:14 2017 +0300 +++ b/njs/njs_object.c Mon Jun 19 14:41:03 2017 +0300 @@ -755,6 +755,54 @@ njs_object_freeze(njs_vm_t *vm, njs_valu static njs_ret_t +njs_object_is_frozen(njs_vm_t *vm, njs_value_t *args, nxt_uint_t nargs, + njs_index_t unused) +{ + nxt_lvlhsh_t *hash; + njs_object_t *object; + njs_object_prop_t *prop; + nxt_lvlhsh_each_t lhe; + const njs_value_t *retval; + + if (nargs < 2 || !njs_is_object(&args[1])) { + vm->exception = &njs_exception_type_error; + return NXT_ERROR; + } + + retval = &njs_string_false; + + object = args[1].data.u.object; + nxt_lvlhsh_each_init(&lhe, &njs_object_hash_proto); + + hash = &object->hash; + + if (object->extensible) { + goto done; + } + + for ( ;; ) { + prop = nxt_lvlhsh_each(hash, &lhe); + + if (prop == NULL) { + break; + } + + if (prop->writable || prop->configurable) { + goto done; + } + } + + retval = &njs_string_true; + +done: + + vm->retval = *retval; + + return NXT_OK; +} + + +static njs_ret_t njs_object_prevent_extensions(njs_vm_t *vm, njs_value_t *args, nxt_uint_t nargs, njs_index_t unused) { @@ -957,6 +1005,14 @@ static const njs_object_prop_t njs_obje NJS_SKIP_ARG, NJS_OBJECT_ARG), }, + /* Object.isFrozen(). */ + { + .type = NJS_METHOD, + .name = njs_string("isFrozen"), + .value = njs_native_function(njs_object_is_frozen, 0, + NJS_SKIP_ARG, NJS_OBJECT_ARG), + }, + /* Object.preventExtensions(). */ { .type = NJS_METHOD, diff -r 4d5a5d618fca -r b2ccd7673a5e njs/test/njs_unit_test.c --- a/njs/test/njs_unit_test.c Mon Jun 19 14:40:14 2017 +0300 +++ b/njs/test/njs_unit_test.c Mon Jun 19 14:41:03 2017 +0300 @@ -6164,6 +6164,57 @@ static njs_unit_test_t njs_test[] = { nxt_string("var r = Object.freeze(new RegExp('')); r.a = 1; r.a"), nxt_string("undefined") }, + { nxt_string("Object.isFrozen({a:1})"), + nxt_string("false") }, + + { nxt_string("Object.isFrozen([1,2])"), + nxt_string("false") }, + + { nxt_string("Object.isFrozen(function() {})"), + nxt_string("false") }, + + { nxt_string("Object.isFrozen(new Date(''))"), + nxt_string("false") }, + + { nxt_string("Object.isFrozen(new RegExp(''))"), + nxt_string("false") }, + + { nxt_string("Object.isFrozen(1)"), + nxt_string("TypeError") }, + + { nxt_string("Object.isFrozen('')"), + nxt_string("TypeError") }, + + { nxt_string("Object.isFrozen(Object.defineProperties({}, {a:{value:1}}))"), + nxt_string("false") }, + + { nxt_string("var o = Object.defineProperties({}, {a:{}, b:{}});" + "o = Object.preventExtensions(o);" + "Object.isFrozen(o)"), + nxt_string("true") }, + + { nxt_string("var o = Object.defineProperties({}, {a:{}, b:{writable:1}});" + "o = Object.preventExtensions(o);" + "Object.isFrozen(o)"), + nxt_string("false") }, + + { nxt_string("var o = Object.defineProperties({}, {a:{writable:1}});" + "o = Object.preventExtensions(o);" + "Object.isFrozen(o)"), + nxt_string("false") }, + + { nxt_string("var o = Object.defineProperties({}, {a:{configurable:1}});" + "o = Object.preventExtensions(o);" + "Object.isFrozen(o)"), + nxt_string("false") }, + + { nxt_string("var o = Object.preventExtensions({a:1});" + "Object.isFrozen(o)"), + nxt_string("false") }, + + { nxt_string("var o = Object.freeze({a:1}); Object.isFrozen(o)"), + nxt_string("true") }, + { nxt_string("var o = Object.preventExtensions({a:1});" "Object.defineProperty(o, 'b', {value:1})"), nxt_string("TypeError") }, _______________________________________________ nginx-devel mailing list nginx-devel@nginx.org http://mailman.nginx.org/mailman/listinfo/nginx-devel