164 lines
5.5 KiB
C++
164 lines
5.5 KiB
C++
#include <QDebug>
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#include <QJSValueIterator>
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#include "../utils/DoricUtils.h"
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#include "DoricNativeJSE.h"
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DoricNativeJSE::DoricNativeJSE() {
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mJSEngine.installExtensions(QJSEngine::AllExtensions);
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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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v8::Isolate::CreateParams create_params;
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create_params.array_buffer_allocator =
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v8::ArrayBuffer::Allocator::NewDefaultAllocator();
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v8::Isolate *isolate = v8::Isolate::New(create_params);
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{
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v8::Isolate::Scope isolate_scope(isolate);
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// Create a stack-allocated handle scope.
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v8::HandleScope handle_scope(isolate);
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// Create a new context.
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v8::Local<v8::Context> context = v8::Context::New(isolate);
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// Enter the context for compiling and running the hello world script.
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v8::Context::Scope context_scope(context);
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{
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// Create a string containing the JavaScript source code.
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v8::Local<v8::String> source =
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v8::String::NewFromUtf8Literal(isolate, "'Hello' + ', World!'");
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// Compile the source code.
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v8::Local<v8::Script> script =
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v8::Script::Compile(context, source).ToLocalChecked();
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// Run the script to get the result.
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v8::Local<v8::Value> result = script->Run(context).ToLocalChecked();
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// Convert the result to an UTF8 string and print it.
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v8::String::Utf8Value utf8(isolate, result);
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printf("%s\n", *utf8);
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}
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{
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// Use the JavaScript API to generate a WebAssembly module.
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//
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// |bytes| contains the binary format for the following module:
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//
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// (func (export "add") (param i32 i32) (result i32)
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// get_local 0
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// get_local 1
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// i32.add)
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//
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const char csource[] = R"(
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let bytes = new Uint8Array([
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0x00, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00, 0x01, 0x07, 0x01,
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0x60, 0x02, 0x7f, 0x7f, 0x01, 0x7f, 0x03, 0x02, 0x01, 0x00, 0x07,
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0x07, 0x01, 0x03, 0x61, 0x64, 0x64, 0x00, 0x00, 0x0a, 0x09, 0x01,
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0x07, 0x00, 0x20, 0x00, 0x20, 0x01, 0x6a, 0x0b
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]);
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let module = new WebAssembly.Module(bytes);
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let instance = new WebAssembly.Instance(module);
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instance.exports.add(3, 4);
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)";
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// Create a string containing the JavaScript source code.
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v8::Local<v8::String> source =
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v8::String::NewFromUtf8Literal(isolate, csource);
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// Compile the source code.
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v8::Local<v8::Script> script =
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v8::Script::Compile(context, source).ToLocalChecked();
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// Run the script to get the result.
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v8::Local<v8::Value> result = script->Run(context).ToLocalChecked();
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// Convert the result to a uint32 and print it.
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uint32_t number = result->Uint32Value(context).ToChecked();
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printf("3 + 4 = %u\n", number);
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}
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}
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// Dispose the isolate and tear down V8.
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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 DoricNativeJSE::loadJS(QString script, QString source) {
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return mJSEngine.evaluate(script, source).toString();
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}
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void DoricNativeJSE::injectGlobalJSObject(QString name, QObject *object) {
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QJSValue jsObject = mJSEngine.newQObject(object);
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QList<QByteArray> propertyNames = object->dynamicPropertyNames();
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foreach (QByteArray propertyName, propertyNames) {
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QString key = QString::fromStdString(propertyName.toStdString());
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if (key == "undefined") {
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} else {
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jsObject.setProperty(
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key, mJSEngine.toScriptValue(object->property(propertyName)));
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}
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}
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mJSEngine.globalObject().setProperty(name, jsObject);
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}
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void DoricNativeJSE::injectGlobalJSFunction(QString name, QObject *function,
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QString property) {
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QJSValue functionObject = mJSEngine.newQObject(function);
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mJSEngine.globalObject().setProperty(name, functionObject.property(property));
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}
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QJSValue DoricNativeJSE::invokeObject(QString objectName, QString functionName,
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QVariantList arguments) {
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QJSValue object = mJSEngine.evaluate(objectName);
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QJSValue function = object.property(functionName);
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QJSValueList args;
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foreach (QVariant variant, arguments) {
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if (variant.type() == QVariant::String) {
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args.push_back(QJSValue(variant.toString()));
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} else if (variant.type() == QVariant::Map) {
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QJSValue arg = mJSEngine.newObject();
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QMap<QString, QVariant> map = variant.toMap();
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foreach (QString key, map.keys()) {
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QVariant value = map.value(key);
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if (value.type() == QVariant::String) {
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arg.setProperty(key, value.toString());
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} else if (value.type() == QVariant::Int) {
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arg.setProperty(key, value.toInt());
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}
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}
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args.push_back(arg);
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} else if (variant.type() == QVariant::StringList) {
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QStringList array = variant.toStringList();
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QJSValue arg = mJSEngine.newArray(array.size());
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for (int i = 0; i != array.size(); i++) {
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arg.setProperty(i, array.at(i));
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}
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args.push_back(arg);
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}
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}
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QJSValue result = function.call(args);
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if (result.isError()) {
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qCritical() << "++++++++++++++++++++++++++++++++++++++++++++++++";
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qCritical() << result.toString();
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QStringList stacktraces = result.property("stack").toString().split("\n");
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foreach (QString stacktrace, stacktraces) { qDebug() << stacktrace; }
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qCritical() << "------------------------------------------------";
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}
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return result;
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}
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