Preliminary settings work

src/frontend/CPUSettings.cpp

@@ -0,0 +1,35 @@
+#include <CPUSettings.hpp>
+#include <QVBoxLayout>
+#include <QLabel>
+#include <JSONUtils.hpp>
+#include <log.hpp>
+
+CPUSettings::CPUSettings(nlohmann::json& settings) : settings(settings), QWidget(nullptr) {
+  cpuTypes->addItems({ "Interpreter", "Dynamic Recompiler" });
+
+  if (JSONGetField<std::string>(settings, "cpu", "type") == "jit") {
+    cpuTypes->setCurrentIndex(1);
+  } else {
+    cpuTypes->setCurrentIndex(0);
+  }
+
+  connect(cpuTypes, &QComboBox::currentIndexChanged, this, [&]() {
+    if (cpuTypes->currentIndex() == 0) {
+      JSONSetField(settings, "cpu", "type", "interpreter");
+    } else if (cpuTypes->currentIndex() == 1) {
+      JSONSetField(settings, "cpu", "type", "jit");
+    } else {
+      Util::panic("Impossible CPU type!");
+    }
+
+    emit modified();
+  });
+
+  QLabel* label = new QLabel("CPU type:");
+
+  QVBoxLayout* mainLayout = new QVBoxLayout;
+  mainLayout->addWidget(label);
+  mainLayout->addWidget(cpuTypes);
+  mainLayout->addStretch();
+  setLayout(mainLayout);
+}