102 lines
3.4 KiB
C++
102 lines
3.4 KiB
C++
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#include "V8Executor.h"
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#include "JSValueHelper.h"
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#include <QThread>
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V8Executor::V8Executor() {
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std::unique_ptr<v8::Platform> platform = v8::platform::NewDefaultPlatform();
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v8::V8::InitializePlatform(platform.get());
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v8::V8::Initialize();
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create_params.array_buffer_allocator =
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v8::ArrayBuffer::Allocator::NewDefaultAllocator();
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m_isolate = v8::Isolate::New(create_params);
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m_isolate_scope = new v8::Isolate::Scope(m_isolate);
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v8::Isolate *isolate = v8::Isolate::GetCurrent();
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v8::HandleScope scope(isolate);
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v8::Local<v8::ObjectTemplate> global = v8::ObjectTemplate::New(isolate);
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v8::Local<v8::Context> context = v8::Context::New(isolate, nullptr, global);
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context->Enter();
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m_global_context = new v8::Global<v8::Context>(isolate, context);
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}
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V8Executor::~V8Executor() {
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{
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v8::HandleScope scope(m_isolate);
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v8::Local<v8::Context> context = m_global_context->Get(m_isolate);
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context->Exit();
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}
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m_global_context->Reset();
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delete m_global_context;
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delete m_isolate_scope;
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m_isolate->Dispose();
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v8::V8::Dispose();
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v8::V8::ShutdownPlatform();
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delete create_params.array_buffer_allocator;
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}
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QString V8Executor::loadJS(QString script, QString source) {
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std::string exception;
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v8::HandleScope scope(m_isolate);
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v8::Local<v8::Value> ret = innerExec(script.toUtf8().constData(),
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source.toUtf8().constData(), &exception);
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std::string result = ToString(ret);
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return QString::fromUtf8(result.c_str());
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}
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void V8Executor::injectGlobalJSObject(QString name, QObject *target) {
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v8::HandleScope handleScope(v8::Isolate::GetCurrent());
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v8::Local<v8::Value> local = ObjectToJS(target);
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v8::Isolate *isolate = m_isolate;
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v8::HandleScope handle_scope(isolate);
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v8::Local<v8::Context> context = isolate->GetEnteredOrMicrotaskContext();
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v8::Local<v8::Object> object = context->Global();
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v8::Maybe<bool> result =
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object->Set(context, NewV8String(name.toUtf8().constData()), local);
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result.ToChecked();
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}
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v8::Local<v8::Value> V8Executor::innerExec(const char *script,
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const char *source,
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std::string *exception_str) {
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v8::Isolate *isolate = m_isolate;
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v8::EscapableHandleScope handle_scope(isolate);
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v8::Local<v8::Value> result = Undefined(isolate);
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v8::Local<v8::Context> context = isolate->GetEnteredOrMicrotaskContext();
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v8::Context::Scope context_scope(context);
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v8::ScriptOrigin origin(NewV8String(source));
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if (script) {
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v8::Local<v8::String> jsSource = NewV8String(script);
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v8::TryCatch try_catch(isolate);
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try_catch.SetVerbose(true);
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v8::MaybeLocal<v8::Script> maybeScript =
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v8::Script::Compile(context, jsSource, &origin);
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if (!maybeScript.IsEmpty()) {
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v8::Local<v8::Script> js_script = maybeScript.ToLocalChecked();
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v8::MaybeLocal<v8::Value> res = js_script->Run(context);
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if (!res.IsEmpty()) {
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result = res.ToLocalChecked();
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}
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}
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v8::Local<v8::Value> exception = try_catch.Exception();
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if (!exception.IsEmpty()) {
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if (exception->IsObject()) {
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v8::Local<v8::Object> exc = v8::Local<v8::Object>::Cast(exception);
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v8::Local<v8::Value> stack =
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exc->Get(context, NewV8String("stack")).FromMaybe(exception);
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*exception_str = ToString(stack);
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} else {
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*exception_str = ToString(exception);
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}
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}
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}
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return handle_scope.Escape(result);
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}
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