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1 : // Copyright 2018 the V8 project authors. All rights reserved.
2 : // Use of this source code is governed by a BSD-style license that can be
3 : // found in the LICENSE file.
4 :
5 : #ifndef V8_API_INL_H_
6 : #define V8_API_INL_H_
7 :
8 : #include "src/api.h"
9 : #include "src/handles-inl.h"
10 : #include "src/objects-inl.h"
11 : #include "src/objects/foreign-inl.h"
12 : #include "src/objects/stack-frame-info.h"
13 :
14 : namespace v8 {
15 :
16 : template <typename T>
17 914 : inline T ToCData(v8::internal::Object obj) {
18 : STATIC_ASSERT(sizeof(T) == sizeof(v8::internal::Address));
19 5367007 : if (obj == v8::internal::Smi::kZero) return nullptr;
20 : return reinterpret_cast<T>(
21 5367006 : v8::internal::Foreign::cast(obj)->foreign_address());
22 : }
23 :
24 : template <>
25 : inline v8::internal::Address ToCData(v8::internal::Object obj) {
26 3711773 : if (obj == v8::internal::Smi::kZero) return v8::internal::kNullAddress;
27 : return v8::internal::Foreign::cast(obj)->foreign_address();
28 : }
29 :
30 : template <typename T>
31 3672858 : inline v8::internal::Handle<v8::internal::Object> FromCData(
32 : v8::internal::Isolate* isolate, T obj) {
33 : STATIC_ASSERT(sizeof(T) == sizeof(v8::internal::Address));
34 3672858 : if (obj == nullptr) return handle(v8::internal::Smi::kZero, isolate);
35 : return isolate->factory()->NewForeign(
36 3672294 : reinterpret_cast<v8::internal::Address>(obj));
37 : }
38 :
39 : template <>
40 3578085 : inline v8::internal::Handle<v8::internal::Object> FromCData(
41 : v8::internal::Isolate* isolate, v8::internal::Address obj) {
42 3578085 : if (obj == v8::internal::kNullAddress) {
43 : return handle(v8::internal::Smi::kZero, isolate);
44 : }
45 3578085 : return isolate->factory()->NewForeign(obj);
46 : }
47 :
48 : template <class From, class To>
49 : inline Local<To> Utils::Convert(v8::internal::Handle<From> obj) {
50 : DCHECK(obj.is_null() || (obj->IsSmi() || !obj->IsTheHole()));
51 : return Local<To>(reinterpret_cast<To*>(obj.location()));
52 : }
53 :
54 : // Implementations of ToLocal
55 :
56 : #define MAKE_TO_LOCAL(Name, From, To) \
57 : Local<v8::To> Utils::Name(v8::internal::Handle<v8::internal::From> obj) { \
58 : return Convert<v8::internal::From, v8::To>(obj); \
59 : }
60 :
61 : #define MAKE_TO_LOCAL_TYPED_ARRAY(Type, typeName, TYPE, ctype) \
62 : Local<v8::Type##Array> Utils::ToLocal##Type##Array( \
63 : v8::internal::Handle<v8::internal::JSTypedArray> obj) { \
64 : DCHECK(obj->type() == v8::internal::kExternal##Type##Array); \
65 : return Convert<v8::internal::JSTypedArray, v8::Type##Array>(obj); \
66 : }
67 :
68 : MAKE_TO_LOCAL(ToLocal, Context, Context)
69 : MAKE_TO_LOCAL(ToLocal, Object, Value)
70 : MAKE_TO_LOCAL(ToLocal, Module, Module)
71 : MAKE_TO_LOCAL(ToLocal, Name, Name)
72 : MAKE_TO_LOCAL(ToLocal, String, String)
73 : MAKE_TO_LOCAL(ToLocal, Symbol, Symbol)
74 : MAKE_TO_LOCAL(ToLocal, JSRegExp, RegExp)
75 : MAKE_TO_LOCAL(ToLocal, JSReceiver, Object)
76 : MAKE_TO_LOCAL(ToLocal, JSObject, Object)
77 : MAKE_TO_LOCAL(ToLocal, JSFunction, Function)
78 : MAKE_TO_LOCAL(ToLocal, JSArray, Array)
79 : MAKE_TO_LOCAL(ToLocal, JSMap, Map)
80 : MAKE_TO_LOCAL(ToLocal, JSSet, Set)
81 : MAKE_TO_LOCAL(ToLocal, JSProxy, Proxy)
82 : MAKE_TO_LOCAL(ToLocal, JSArrayBuffer, ArrayBuffer)
83 : MAKE_TO_LOCAL(ToLocal, JSArrayBufferView, ArrayBufferView)
84 : MAKE_TO_LOCAL(ToLocal, JSDataView, DataView)
85 : MAKE_TO_LOCAL(ToLocal, JSTypedArray, TypedArray)
86 : MAKE_TO_LOCAL(ToLocalShared, JSArrayBuffer, SharedArrayBuffer)
87 :
88 : TYPED_ARRAYS(MAKE_TO_LOCAL_TYPED_ARRAY)
89 :
90 : MAKE_TO_LOCAL(ToLocal, FunctionTemplateInfo, FunctionTemplate)
91 : MAKE_TO_LOCAL(ToLocal, ObjectTemplateInfo, ObjectTemplate)
92 : MAKE_TO_LOCAL(SignatureToLocal, FunctionTemplateInfo, Signature)
93 : MAKE_TO_LOCAL(AccessorSignatureToLocal, FunctionTemplateInfo, AccessorSignature)
94 : MAKE_TO_LOCAL(MessageToLocal, Object, Message)
95 : MAKE_TO_LOCAL(PromiseToLocal, JSObject, Promise)
96 : MAKE_TO_LOCAL(StackTraceToLocal, FixedArray, StackTrace)
97 : MAKE_TO_LOCAL(StackFrameToLocal, StackTraceFrame, StackFrame)
98 : MAKE_TO_LOCAL(NumberToLocal, Object, Number)
99 : MAKE_TO_LOCAL(IntegerToLocal, Object, Integer)
100 : MAKE_TO_LOCAL(Uint32ToLocal, Object, Uint32)
101 : MAKE_TO_LOCAL(ToLocal, BigInt, BigInt)
102 : MAKE_TO_LOCAL(ExternalToLocal, JSObject, External)
103 : MAKE_TO_LOCAL(CallableToLocal, JSReceiver, Function)
104 : MAKE_TO_LOCAL(ToLocalPrimitive, Object, Primitive)
105 : MAKE_TO_LOCAL(ToLocal, FixedArray, PrimitiveArray)
106 : MAKE_TO_LOCAL(ScriptOrModuleToLocal, Script, ScriptOrModule)
107 :
108 : #undef MAKE_TO_LOCAL_TYPED_ARRAY
109 : #undef MAKE_TO_LOCAL
110 :
111 : // Implementations of OpenHandle
112 :
113 : #define MAKE_OPEN_HANDLE(From, To) \
114 : v8::internal::Handle<v8::internal::To> Utils::OpenHandle( \
115 : const v8::From* that, bool allow_empty_handle) { \
116 : DCHECK(allow_empty_handle || that != nullptr); \
117 : DCHECK(that == nullptr || \
118 : v8::internal::Object( \
119 : *reinterpret_cast<const v8::internal::Address*>(that)) \
120 : ->Is##To()); \
121 : return v8::internal::Handle<v8::internal::To>( \
122 : reinterpret_cast<v8::internal::Address*>( \
123 : const_cast<v8::From*>(that))); \
124 : }
125 :
126 : OPEN_HANDLE_LIST(MAKE_OPEN_HANDLE)
127 :
128 : #undef MAKE_OPEN_HANDLE
129 : #undef OPEN_HANDLE_LIST
130 :
131 : namespace internal {
132 :
133 0 : Handle<Context> HandleScopeImplementer::LastEnteredContext() {
134 : DCHECK_EQ(entered_contexts_.size(), is_microtask_context_.size());
135 :
136 0 : for (size_t i = 0; i < entered_contexts_.size(); ++i) {
137 0 : size_t j = entered_contexts_.size() - i - 1;
138 0 : if (!is_microtask_context_.at(j)) {
139 0 : return Handle<Context>(entered_contexts_.at(j), isolate_);
140 : }
141 : }
142 :
143 : return Handle<Context>::null();
144 : }
145 :
146 1143264 : Handle<Context> HandleScopeImplementer::LastEnteredOrMicrotaskContext() {
147 1143264 : if (entered_contexts_.empty()) return Handle<Context>::null();
148 2286528 : return Handle<Context>(entered_contexts_.back(), isolate_);
149 : }
150 :
151 : } // namespace internal
152 : } // namespace v8
153 :
154 : #endif // V8_API_INL_H_
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