1 /*********************************************************************
2 * NAN - Native Abstractions for Node.js
3 *
4 * Copyright (c) 2018 NAN contributors
5 *
6 * MIT License <https://github.com/nodejs/nan/blob/master/LICENSE.md>
7 ********************************************************************/
8
9 #ifndef NAN_MAYBE_PRE_43_INL_H_
10 #define NAN_MAYBE_PRE_43_INL_H_
11
12 template<typename T>
13 class MaybeLocal {
14 public:
MaybeLocal()15 inline MaybeLocal() : val_(v8::Local<T>()) {}
16
17 template<typename S>
18 # if NODE_MODULE_VERSION >= NODE_0_12_MODULE_VERSION
19 inline
MaybeLocal(v8::Local<S> that)20 MaybeLocal(v8::Local<S> that) : val_(that) {} // NOLINT(runtime/explicit)
21 # else
22 inline
23 MaybeLocal(v8::Local<S> that) : // NOLINT(runtime/explicit)
24 val_(*reinterpret_cast<v8::Local<T>*>(&that)) {}
25 # endif
26
IsEmpty()27 inline bool IsEmpty() const { return val_.IsEmpty(); }
28
29 template<typename S>
ToLocal(v8::Local<S> * out)30 inline bool ToLocal(v8::Local<S> *out) const {
31 *out = val_;
32 return !IsEmpty();
33 }
34
ToLocalChecked()35 inline v8::Local<T> ToLocalChecked() const {
36 #if defined(V8_ENABLE_CHECKS)
37 assert(!IsEmpty() && "ToLocalChecked is Empty");
38 #endif // V8_ENABLE_CHECKS
39 return val_;
40 }
41
42 template<typename S>
FromMaybe(v8::Local<S> default_value)43 inline v8::Local<S> FromMaybe(v8::Local<S> default_value) const {
44 return IsEmpty() ? default_value : v8::Local<S>(val_);
45 }
46
47 private:
48 v8::Local<T> val_;
49 };
50
51 inline
ToDetailString(v8::Handle<v8::Value> val)52 MaybeLocal<v8::String> ToDetailString(v8::Handle<v8::Value> val) {
53 return MaybeLocal<v8::String>(val->ToDetailString());
54 }
55
56 inline
ToArrayIndex(v8::Handle<v8::Value> val)57 MaybeLocal<v8::Uint32> ToArrayIndex(v8::Handle<v8::Value> val) {
58 return MaybeLocal<v8::Uint32>(val->ToArrayIndex());
59 }
60
61 inline
Equals(v8::Handle<v8::Value> a,v8::Handle<v8::Value> (b))62 Maybe<bool> Equals(v8::Handle<v8::Value> a, v8::Handle<v8::Value>(b)) {
63 return Just<bool>(a->Equals(b));
64 }
65
66 inline
NewInstance(v8::Handle<v8::Function> h)67 MaybeLocal<v8::Object> NewInstance(v8::Handle<v8::Function> h) {
68 return MaybeLocal<v8::Object>(h->NewInstance());
69 }
70
71 inline
NewInstance(v8::Local<v8::Function> h,int argc,v8::Local<v8::Value> argv[])72 MaybeLocal<v8::Object> NewInstance(
73 v8::Local<v8::Function> h
74 , int argc
75 , v8::Local<v8::Value> argv[]) {
76 return MaybeLocal<v8::Object>(h->NewInstance(argc, argv));
77 }
78
79 inline
NewInstance(v8::Handle<v8::ObjectTemplate> h)80 MaybeLocal<v8::Object> NewInstance(v8::Handle<v8::ObjectTemplate> h) {
81 return MaybeLocal<v8::Object>(h->NewInstance());
82 }
83
84 inline
GetFunction(v8::Handle<v8::FunctionTemplate> t)85 MaybeLocal<v8::Function> GetFunction(v8::Handle<v8::FunctionTemplate> t) {
86 return MaybeLocal<v8::Function>(t->GetFunction());
87 }
88
Set(v8::Handle<v8::Object> obj,v8::Handle<v8::Value> key,v8::Handle<v8::Value> value)89 inline Maybe<bool> Set(
90 v8::Handle<v8::Object> obj
91 , v8::Handle<v8::Value> key
92 , v8::Handle<v8::Value> value) {
93 return Just<bool>(obj->Set(key, value));
94 }
95
Set(v8::Handle<v8::Object> obj,uint32_t index,v8::Handle<v8::Value> value)96 inline Maybe<bool> Set(
97 v8::Handle<v8::Object> obj
98 , uint32_t index
99 , v8::Handle<v8::Value> value) {
100 return Just<bool>(obj->Set(index, value));
101 }
102
103 #include "nan_define_own_property_helper.h" // NOLINT(build/include)
104
105 inline Maybe<bool> DefineOwnProperty(
106 v8::Handle<v8::Object> obj
107 , v8::Handle<v8::String> key
108 , v8::Handle<v8::Value> value
109 , v8::PropertyAttribute attribs = v8::None) {
110 v8::PropertyAttribute current = obj->GetPropertyAttributes(key);
111 return imp::DefineOwnPropertyHelper(current, obj, key, value, attribs);
112 }
113
114 NAN_DEPRECATED inline Maybe<bool> ForceSet(
115 v8::Handle<v8::Object> obj
116 , v8::Handle<v8::Value> key
117 , v8::Handle<v8::Value> value
118 , v8::PropertyAttribute attribs = v8::None) {
119 return Just<bool>(obj->ForceSet(key, value, attribs));
120 }
121
Get(v8::Handle<v8::Object> obj,v8::Handle<v8::Value> key)122 inline MaybeLocal<v8::Value> Get(
123 v8::Handle<v8::Object> obj
124 , v8::Handle<v8::Value> key) {
125 return MaybeLocal<v8::Value>(obj->Get(key));
126 }
127
Get(v8::Handle<v8::Object> obj,uint32_t index)128 inline MaybeLocal<v8::Value> Get(
129 v8::Handle<v8::Object> obj
130 , uint32_t index) {
131 return MaybeLocal<v8::Value>(obj->Get(index));
132 }
133
GetPropertyAttributes(v8::Handle<v8::Object> obj,v8::Handle<v8::Value> key)134 inline Maybe<v8::PropertyAttribute> GetPropertyAttributes(
135 v8::Handle<v8::Object> obj
136 , v8::Handle<v8::Value> key) {
137 return Just<v8::PropertyAttribute>(obj->GetPropertyAttributes(key));
138 }
139
Has(v8::Handle<v8::Object> obj,v8::Handle<v8::String> key)140 inline Maybe<bool> Has(
141 v8::Handle<v8::Object> obj
142 , v8::Handle<v8::String> key) {
143 return Just<bool>(obj->Has(key));
144 }
145
Has(v8::Handle<v8::Object> obj,uint32_t index)146 inline Maybe<bool> Has(
147 v8::Handle<v8::Object> obj
148 , uint32_t index) {
149 return Just<bool>(obj->Has(index));
150 }
151
Delete(v8::Handle<v8::Object> obj,v8::Handle<v8::String> key)152 inline Maybe<bool> Delete(
153 v8::Handle<v8::Object> obj
154 , v8::Handle<v8::String> key) {
155 return Just<bool>(obj->Delete(key));
156 }
157
Delete(v8::Handle<v8::Object> obj,uint32_t index)158 inline Maybe<bool> Delete(
159 v8::Handle<v8::Object> obj
160 , uint32_t index) {
161 return Just<bool>(obj->Delete(index));
162 }
163
164 inline
GetPropertyNames(v8::Handle<v8::Object> obj)165 MaybeLocal<v8::Array> GetPropertyNames(v8::Handle<v8::Object> obj) {
166 return MaybeLocal<v8::Array>(obj->GetPropertyNames());
167 }
168
169 inline
GetOwnPropertyNames(v8::Handle<v8::Object> obj)170 MaybeLocal<v8::Array> GetOwnPropertyNames(v8::Handle<v8::Object> obj) {
171 return MaybeLocal<v8::Array>(obj->GetOwnPropertyNames());
172 }
173
SetPrototype(v8::Handle<v8::Object> obj,v8::Handle<v8::Value> prototype)174 inline Maybe<bool> SetPrototype(
175 v8::Handle<v8::Object> obj
176 , v8::Handle<v8::Value> prototype) {
177 return Just<bool>(obj->SetPrototype(prototype));
178 }
179
ObjectProtoToString(v8::Handle<v8::Object> obj)180 inline MaybeLocal<v8::String> ObjectProtoToString(
181 v8::Handle<v8::Object> obj) {
182 return MaybeLocal<v8::String>(obj->ObjectProtoToString());
183 }
184
HasOwnProperty(v8::Handle<v8::Object> obj,v8::Handle<v8::String> key)185 inline Maybe<bool> HasOwnProperty(
186 v8::Handle<v8::Object> obj
187 , v8::Handle<v8::String> key) {
188 return Just<bool>(obj->HasOwnProperty(key));
189 }
190
HasRealNamedProperty(v8::Handle<v8::Object> obj,v8::Handle<v8::String> key)191 inline Maybe<bool> HasRealNamedProperty(
192 v8::Handle<v8::Object> obj
193 , v8::Handle<v8::String> key) {
194 return Just<bool>(obj->HasRealNamedProperty(key));
195 }
196
HasRealIndexedProperty(v8::Handle<v8::Object> obj,uint32_t index)197 inline Maybe<bool> HasRealIndexedProperty(
198 v8::Handle<v8::Object> obj
199 , uint32_t index) {
200 return Just<bool>(obj->HasRealIndexedProperty(index));
201 }
202
HasRealNamedCallbackProperty(v8::Handle<v8::Object> obj,v8::Handle<v8::String> key)203 inline Maybe<bool> HasRealNamedCallbackProperty(
204 v8::Handle<v8::Object> obj
205 , v8::Handle<v8::String> key) {
206 return Just<bool>(obj->HasRealNamedCallbackProperty(key));
207 }
208
GetRealNamedPropertyInPrototypeChain(v8::Handle<v8::Object> obj,v8::Handle<v8::String> key)209 inline MaybeLocal<v8::Value> GetRealNamedPropertyInPrototypeChain(
210 v8::Handle<v8::Object> obj
211 , v8::Handle<v8::String> key) {
212 return MaybeLocal<v8::Value>(
213 obj->GetRealNamedPropertyInPrototypeChain(key));
214 }
215
GetRealNamedProperty(v8::Handle<v8::Object> obj,v8::Handle<v8::String> key)216 inline MaybeLocal<v8::Value> GetRealNamedProperty(
217 v8::Handle<v8::Object> obj
218 , v8::Handle<v8::String> key) {
219 return MaybeLocal<v8::Value>(obj->GetRealNamedProperty(key));
220 }
221
CallAsFunction(v8::Handle<v8::Object> obj,v8::Handle<v8::Object> recv,int argc,v8::Handle<v8::Value> argv[])222 inline MaybeLocal<v8::Value> CallAsFunction(
223 v8::Handle<v8::Object> obj
224 , v8::Handle<v8::Object> recv
225 , int argc
226 , v8::Handle<v8::Value> argv[]) {
227 return MaybeLocal<v8::Value>(obj->CallAsFunction(recv, argc, argv));
228 }
229
CallAsConstructor(v8::Handle<v8::Object> obj,int argc,v8::Local<v8::Value> argv[])230 inline MaybeLocal<v8::Value> CallAsConstructor(
231 v8::Handle<v8::Object> obj
232 , int argc
233 , v8::Local<v8::Value> argv[]) {
234 return MaybeLocal<v8::Value>(obj->CallAsConstructor(argc, argv));
235 }
236
237 inline
GetSourceLine(v8::Handle<v8::Message> msg)238 MaybeLocal<v8::String> GetSourceLine(v8::Handle<v8::Message> msg) {
239 return MaybeLocal<v8::String>(msg->GetSourceLine());
240 }
241
GetLineNumber(v8::Handle<v8::Message> msg)242 inline Maybe<int> GetLineNumber(v8::Handle<v8::Message> msg) {
243 return Just<int>(msg->GetLineNumber());
244 }
245
GetStartColumn(v8::Handle<v8::Message> msg)246 inline Maybe<int> GetStartColumn(v8::Handle<v8::Message> msg) {
247 return Just<int>(msg->GetStartColumn());
248 }
249
GetEndColumn(v8::Handle<v8::Message> msg)250 inline Maybe<int> GetEndColumn(v8::Handle<v8::Message> msg) {
251 return Just<int>(msg->GetEndColumn());
252 }
253
CloneElementAt(v8::Handle<v8::Array> array,uint32_t index)254 inline MaybeLocal<v8::Object> CloneElementAt(
255 v8::Handle<v8::Array> array
256 , uint32_t index) {
257 return MaybeLocal<v8::Object>(array->CloneElementAt(index));
258 }
259
Call(v8::Local<v8::Function> fun,v8::Local<v8::Object> recv,int argc,v8::Local<v8::Value> argv[])260 inline MaybeLocal<v8::Value> Call(
261 v8::Local<v8::Function> fun
262 , v8::Local<v8::Object> recv
263 , int argc
264 , v8::Local<v8::Value> argv[]) {
265 return MaybeLocal<v8::Value>(fun->Call(recv, argc, argv));
266 }
267
268 #endif // NAN_MAYBE_PRE_43_INL_H_
269