1 /*
2 * Copyright (c) 2021 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "ecmascript/builtins/builtins_json.h"
17
18 #include "ecmascript/base/fast_json_stringifier.h"
19 #include "ecmascript/base/json_parser.h"
20 #include "ecmascript/base/json_stringifier.h"
21 #include "ecmascript/base/number_helper.h"
22 #include "ecmascript/ecma_vm.h"
23 #include "ecmascript/global_env.h"
24 #include "ecmascript/js_handle.h"
25 #include "ecmascript/js_primitive_ref.h"
26 #include "ecmascript/js_tagged_value-inl.h"
27 #include "ecmascript/object_factory.h"
28
29 namespace panda::ecmascript::builtins {
30 // 24.5.1
Parse(EcmaRuntimeCallInfo * argv)31 JSTaggedValue BuiltinsJson::Parse(EcmaRuntimeCallInfo *argv)
32 {
33 BUILTINS_API_TRACE(argv->GetThread(), Json, Parse);
34 ASSERT(argv);
35 JSThread *thread = argv->GetThread();
36 [[maybe_unused]] EcmaHandleScope handleScope(thread);
37
38 ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
39
40 uint32_t argc = argv->GetArgsNumber();
41 if (argc == 0) {
42 JSHandle<JSObject> syntaxError = factory->GetJSError(base::ErrorType::SYNTAX_ERROR, "arg is empty");
43 THROW_NEW_ERROR_AND_RETURN_VALUE(thread, syntaxError.GetTaggedValue(), JSTaggedValue::Exception());
44 }
45
46 JSHandle<JSTaggedValue> msg = GetCallArg(argv, 0);
47 JSHandle<EcmaString> parseString = JSTaggedValue::ToString(thread, msg);
48 RETURN_EXCEPTION_IF_ABRUPT_COMPLETION(thread);
49 JSHandle<JSTaggedValue> result;
50 if (EcmaStringAccessor(parseString).IsUtf8()) {
51 panda::ecmascript::base::Utf8JsonParser parser(thread);
52 result = parser.Parse(*parseString);
53 } else {
54 panda::ecmascript::base::Utf16JsonParser parser(thread);
55 result = parser.Parse(*parseString);
56 }
57 RETURN_EXCEPTION_IF_ABRUPT_COMPLETION(thread);
58
59 JSTaggedValue reviver = JSTaggedValue::Undefined();
60 if (argc == 2) { // 2: 2 args
61 reviver = GetCallArg(argv, 1).GetTaggedValue();
62 if (reviver.IsCallable()) {
63 JSHandle<JSTaggedValue> callbackfnHandle(thread, reviver);
64 // Let root be ! OrdinaryObjectCreate(%Object.prototype%).
65 JSHandle<GlobalEnv> env = thread->GetEcmaVM()->GetGlobalEnv();
66 JSHandle<JSFunction> constructor(env->GetObjectFunction());
67 JSHandle<JSObject> root = factory->NewJSObjectByConstructor(constructor);
68 // Let rootName be the empty String.
69 JSHandle<JSTaggedValue> rootName(factory->GetEmptyString());
70 // Perform ! CreateDataPropertyOrThrow(root, rootName, unfiltered).
71 bool success = JSObject::CreateDataProperty(thread, root, rootName, result);
72 if (success) {
73 result = base::Internalize::InternalizeJsonProperty(thread, root, rootName, callbackfnHandle);
74 RETURN_EXCEPTION_IF_ABRUPT_COMPLETION(thread);
75 }
76 }
77 }
78 return result.GetTaggedValue();
79 }
80
81 // 24.5.2
Stringify(EcmaRuntimeCallInfo * argv)82 JSTaggedValue BuiltinsJson::Stringify(EcmaRuntimeCallInfo *argv)
83 {
84 BUILTINS_API_TRACE(argv->GetThread(), Json, Stringify);
85 ASSERT(argv);
86 JSThread *thread = argv->GetThread();
87 [[maybe_unused]] EcmaHandleScope handleScope(thread);
88
89 uint32_t argc = argv->GetArgsNumber();
90 JSTaggedValue value = GetCallArg(argv, 0).GetTaggedValue();
91 if (argc == 1 && thread->GetCurrentEcmaContext()->IsAotEntry()) {
92 JSHandle<JSTaggedValue> handleValue(thread, value);
93 panda::ecmascript::base::FastJsonStringifier stringifier(thread);
94 JSHandle<JSTaggedValue> result = stringifier.Stringify(handleValue);
95 return result.GetTaggedValue();
96 }
97 JSTaggedValue replacer = JSTaggedValue::Undefined();
98 JSTaggedValue gap = JSTaggedValue::Undefined();
99
100 if (argc == 2) { // 2: 2 args
101 replacer = GetCallArg(argv, 1).GetTaggedValue();
102 } else if (argc == 3) { // 3: 3 args
103 replacer = GetCallArg(argv, 1).GetTaggedValue();
104 gap = GetCallArg(argv, BuiltinsBase::ArgsPosition::THIRD).GetTaggedValue();
105 }
106
107 JSHandle<JSTaggedValue> handleValue(thread, value);
108 JSHandle<JSTaggedValue> handleReplacer(thread, replacer);
109 JSHandle<JSTaggedValue> handleGap(thread, gap);
110 panda::ecmascript::base::JsonStringifier stringifier(thread);
111 JSHandle<JSTaggedValue> result = stringifier.Stringify(handleValue, handleReplacer, handleGap);
112
113 return result.GetTaggedValue();
114 }
115 } // namespace panda::ecmascript::builtins
116