| // Copyright 2017 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef ScriptModule_h |
| #define ScriptModule_h |
| |
| #include "bindings/core/v8/ScriptState.h" |
| #include "bindings/core/v8/SharedPersistent.h" |
| #include "core/CoreExport.h" |
| #include "platform/loader/fetch/AccessControlStatus.h" |
| #include "platform/wtf/Allocator.h" |
| #include "platform/wtf/Vector.h" |
| #include "platform/wtf/text/WTFString.h" |
| #include "v8/include/v8.h" |
| |
| namespace blink { |
| |
| // ScriptModule wraps a handle to a v8::Module for use in core. |
| // |
| // Using ScriptModules needs a ScriptState and its scope to operate in. You |
| // should always provide the same ScriptState and not try to reuse ScriptModules |
| // across different contexts. |
| // Currently all ScriptModule users can easily access its context Modulator, so |
| // we use it to fill ScriptState in. |
| class CORE_EXPORT ScriptModule final { |
| DISALLOW_NEW_EXCEPT_PLACEMENT_NEW(); |
| |
| public: |
| static ScriptModule Compile(v8::Isolate*, |
| const String& source, |
| const String& file_name, |
| AccessControlStatus); |
| |
| // TODO(kouhei): Remove copy ctor |
| ScriptModule() {} |
| ScriptModule(WTF::HashTableDeletedValueType) |
| : module_(WTF::kHashTableDeletedValue) {} |
| ~ScriptModule(); |
| |
| // Returns exception, if any. |
| ScriptValue Instantiate(ScriptState*); |
| void Evaluate(ScriptState*) const; |
| |
| Vector<String> ModuleRequests(ScriptState*); |
| |
| bool IsHashTableDeletedValue() const { |
| return module_.IsHashTableDeletedValue(); |
| } |
| |
| bool operator==(const blink::ScriptModule& other) const { |
| if (IsHashTableDeletedValue() && other.IsHashTableDeletedValue()) |
| return true; |
| |
| if (IsHashTableDeletedValue() || other.IsHashTableDeletedValue()) |
| return false; |
| |
| blink::SharedPersistent<v8::Module>* left = module_.Get(); |
| blink::SharedPersistent<v8::Module>* right = other.module_.Get(); |
| if (left == right) |
| return true; |
| if (!left || !right) |
| return false; |
| return *left == *right; |
| } |
| |
| bool operator!=(const blink::ScriptModule& other) const { |
| return !(*this == other); |
| } |
| |
| bool IsNull() const { return !module_ || module_->IsEmpty(); } |
| |
| private: |
| ScriptModule(v8::Isolate*, v8::Local<v8::Module>); |
| |
| static v8::MaybeLocal<v8::Module> ResolveModuleCallback( |
| v8::Local<v8::Context>, |
| v8::Local<v8::String> specifier, |
| v8::Local<v8::Module> referrer); |
| |
| RefPtr<SharedPersistent<v8::Module>> module_; |
| unsigned identity_hash_ = 0; |
| |
| friend struct ScriptModuleHash; |
| }; |
| |
| struct ScriptModuleHash { |
| STATIC_ONLY(ScriptModuleHash); |
| |
| public: |
| static unsigned GetHash(const blink::ScriptModule& key) { |
| return key.identity_hash_; |
| } |
| |
| static bool Equal(const blink::ScriptModule& a, |
| const blink::ScriptModule& b) { |
| return a == b; |
| } |
| |
| static constexpr bool safe_to_compare_to_empty_or_deleted = true; |
| }; |
| |
| } // namespace blink |
| |
| namespace WTF { |
| |
| template <> |
| struct DefaultHash<blink::ScriptModule> { |
| using Hash = blink::ScriptModuleHash; |
| }; |
| |
| template <> |
| struct HashTraits<blink::ScriptModule> |
| : public SimpleClassHashTraits<blink::ScriptModule> {}; |
| |
| } // namespace WTF |
| |
| #endif // ScriptModule_h |