node/deps/v8_inspector/src/inspector/java-script-call-frame.cc

/*
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#include "src/inspector/java-script-call-frame.h"

#include "src/inspector/string-util.h"

#include "include/v8-debug.h"

namespace v8_inspector {

JavaScriptCallFrame::JavaScriptCallFrame(v8::Local<v8::Context> debuggerContext,
                                         v8::Local<v8::Object> callFrame)
    : m_isolate(debuggerContext->GetIsolate()),
      m_debuggerContext(m_isolate, debuggerContext),
      m_callFrame(m_isolate, callFrame) {}

JavaScriptCallFrame::~JavaScriptCallFrame() {}

int JavaScriptCallFrame::callV8FunctionReturnInt(const char* name) const {
  v8::HandleScope handleScope(m_isolate);
  v8::MicrotasksScope microtasks(m_isolate,
                                 v8::MicrotasksScope::kDoNotRunMicrotasks);
  v8::Local<v8::Context> context =
      v8::Local<v8::Context>::New(m_isolate, m_debuggerContext);
  v8::Local<v8::Object> callFrame =
      v8::Local<v8::Object>::New(m_isolate, m_callFrame);
  v8::Local<v8::Function> func = v8::Local<v8::Function>::Cast(
      callFrame->Get(context, toV8StringInternalized(m_isolate, name))
          .ToLocalChecked());
  v8::Local<v8::Value> result;
  if (!func->Call(context, callFrame, 0, nullptr).ToLocal(&result) ||
      !result->IsInt32())
    return 0;
  return result.As<v8::Int32>()->Value();
}

int JavaScriptCallFrame::sourceID() const {
  return callV8FunctionReturnInt("sourceID");
}

int JavaScriptCallFrame::line() const {
  return callV8FunctionReturnInt("line");
}

int JavaScriptCallFrame::column() const {
  return callV8FunctionReturnInt("column");
}

int JavaScriptCallFrame::contextId() const {
  return callV8FunctionReturnInt("contextId");
}

bool JavaScriptCallFrame::isAtReturn() const {
  v8::HandleScope handleScope(m_isolate);
  v8::Local<v8::Context> context =
      v8::Local<v8::Context>::New(m_isolate, m_debuggerContext);
  v8::Local<v8::Object> callFrame =
      v8::Local<v8::Object>::New(m_isolate, m_callFrame);
  v8::Local<v8::Value> result;
  if (!callFrame->Get(context, toV8StringInternalized(m_isolate, "isAtReturn"))
           .ToLocal(&result) ||
      !result->IsBoolean())
    return false;
  return result.As<v8::Boolean>()->BooleanValue(context).FromMaybe(false);
}

v8::Local<v8::Object> JavaScriptCallFrame::details() const {
  v8::MicrotasksScope microtasks(m_isolate,
                                 v8::MicrotasksScope::kDoNotRunMicrotasks);
  v8::Local<v8::Context> context =
      v8::Local<v8::Context>::New(m_isolate, m_debuggerContext);
  v8::Local<v8::Object> callFrame =
      v8::Local<v8::Object>::New(m_isolate, m_callFrame);
  v8::Local<v8::Function> func = v8::Local<v8::Function>::Cast(
      callFrame->Get(context, toV8StringInternalized(m_isolate, "details"))
          .ToLocalChecked());
  return v8::Local<v8::Object>::Cast(
      func->Call(context, callFrame, 0, nullptr).ToLocalChecked());
}

v8::MaybeLocal<v8::Value> JavaScriptCallFrame::evaluate(
    v8::Local<v8::Value> expression) {
  v8::MicrotasksScope microtasks(m_isolate,
                                 v8::MicrotasksScope::kRunMicrotasks);
  v8::Local<v8::Context> context =
      v8::Local<v8::Context>::New(m_isolate, m_debuggerContext);
  v8::Local<v8::Object> callFrame =
      v8::Local<v8::Object>::New(m_isolate, m_callFrame);
  v8::Local<v8::Function> evalFunction = v8::Local<v8::Function>::Cast(
      callFrame->Get(context, toV8StringInternalized(m_isolate, "evaluate"))
          .ToLocalChecked());
  return evalFunction->Call(context, callFrame, 1, &expression);
}

v8::MaybeLocal<v8::Value> JavaScriptCallFrame::restart() {
  v8::MicrotasksScope microtasks(m_isolate,
                                 v8::MicrotasksScope::kDoNotRunMicrotasks);
  v8::Local<v8::Context> context =
      v8::Local<v8::Context>::New(m_isolate, m_debuggerContext);
  v8::Local<v8::Object> callFrame =
      v8::Local<v8::Object>::New(m_isolate, m_callFrame);
  v8::Local<v8::Function> restartFunction = v8::Local<v8::Function>::Cast(
      callFrame->Get(context, toV8StringInternalized(m_isolate, "restart"))
          .ToLocalChecked());
  v8::Debug::SetLiveEditEnabled(m_isolate, true);
  v8::MaybeLocal<v8::Value> result = restartFunction->Call(
      m_debuggerContext.Get(m_isolate), callFrame, 0, nullptr);
  v8::Debug::SetLiveEditEnabled(m_isolate, false);
  return result;
}

v8::MaybeLocal<v8::Value> JavaScriptCallFrame::setVariableValue(
    int scopeNumber, v8::Local<v8::Value> variableName,
    v8::Local<v8::Value> newValue) {
  v8::MicrotasksScope microtasks(m_isolate,
                                 v8::MicrotasksScope::kDoNotRunMicrotasks);
  v8::Local<v8::Context> context =
      v8::Local<v8::Context>::New(m_isolate, m_debuggerContext);
  v8::Local<v8::Object> callFrame =
      v8::Local<v8::Object>::New(m_isolate, m_callFrame);
  v8::Local<v8::Function> setVariableValueFunction =
      v8::Local<v8::Function>::Cast(
          callFrame
              ->Get(context,
                    toV8StringInternalized(m_isolate, "setVariableValue"))
              .ToLocalChecked());
  v8::Local<v8::Value> argv[] = {
      v8::Local<v8::Value>(v8::Integer::New(m_isolate, scopeNumber)),
      variableName, newValue};
  return setVariableValueFunction->Call(context, callFrame, arraysize(argv),
                                        argv);
}

}  // namespace v8_inspector