// Copyright 2016 the V8 project 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 DEPS_CHAKRASHIM_SRC_INSPECTOR_V8_DEBUGGER_H_
#define DEPS_CHAKRASHIM_SRC_INSPECTOR_V8_DEBUGGER_H_

#include <vector>

#include "src/base/macros.h"
#include "src/inspector/java-script-call-frame.h"
#include "src/inspector/protocol/Forward.h"
#include "src/inspector/protocol/Runtime.h"
#include "src/inspector/v8-debugger-script.h"

#include "include/v8-debug.h"
#include "include/v8-inspector.h"

namespace v8_inspector {

struct ScriptBreakpoint;
class V8DebuggerAgentImpl;
class V8InspectorImpl;
class V8StackTraceImpl;

using protocol::ErrorString;

class V8Debugger {
 public:
  V8Debugger(v8::Isolate*, V8InspectorImpl*);
  ~V8Debugger();

  static int contextId(v8::Local<v8::Context>);
  static int getGroupId(v8::Local<v8::Context>);
  int markContext(const V8ContextInfo&);

  bool enabled() const;

  String16 setBreakpoint(const String16& sourceID, const ScriptBreakpoint&,
                         int* actualLineNumber, int* actualColumnNumber);
  void removeBreakpoint(const String16& breakpointId);
  void setBreakpointsActivated(bool);
  bool breakpointsActivated() const { return m_breakpointsActivated; }

  enum PauseOnExceptionsState {
    DontPauseOnExceptions,
    PauseOnAllExceptions,
    PauseOnUncaughtExceptions
  };
  PauseOnExceptionsState getPauseOnExceptionsState();
  void setPauseOnExceptionsState(PauseOnExceptionsState);
  void setPauseOnNextStatement(bool);
  bool canBreakProgram();
  void breakProgram();
  void continueProgram();
  void stepIntoStatement();
  void stepOverStatement();
  void stepOutOfFunction();
  void clearStepping();

  // Time travel
  void reverse();
  void stepBack();

  bool setScriptSource(const String16& sourceID,
                       v8::Local<v8::String> newSource, bool dryRun,
                       ErrorString*,
                       protocol::Maybe<protocol::Runtime::ExceptionDetails>*,
                       JavaScriptCallFrames* newCallFrames,
                       protocol::Maybe<bool>* stackChanged);
  JavaScriptCallFrames currentCallFrames(int limit = 0);

  // Each script inherits debug data from v8::Context where it has been
  // compiled.
  // Only scripts whose debug data matches |contextGroupId| will be reported.
  // Passing 0 will result in reporting all scripts.
  void getCompiledScripts(int contextGroupId,
                          std::vector<std::unique_ptr<V8DebuggerScript>>&);
  void enable();
  void disable();

  bool isPaused();
  v8::Local<v8::Context> pausedContext() { return m_pausedContext; }

  int maxAsyncCallChainDepth() { return m_maxAsyncCallStackDepth; }
  V8StackTraceImpl* currentAsyncCallChain();
  void setAsyncCallStackDepth(V8DebuggerAgentImpl*, int);
  std::unique_ptr<V8StackTraceImpl> createStackTrace(v8::Local<v8::StackTrace>);
  std::unique_ptr<V8StackTraceImpl> captureStackTrace(bool fullStack);

  v8::MaybeLocal<v8::Array> internalProperties(v8::Local<v8::Context>,
                                               v8::Local<v8::Value>);

  void asyncTaskScheduled(const StringView& taskName, void* task,
                          bool recurring);
  void asyncTaskScheduled(const String16& taskName, void* task, bool recurring);
  void asyncTaskCanceled(void* task);
  void asyncTaskStarted(void* task);
  void asyncTaskFinished(void* task);
  void allAsyncTasksCanceled();

  void muteScriptParsedEvents();
  void unmuteScriptParsedEvents();

  V8InspectorImpl* inspector() { return m_inspector; }

 private:
  static void CHAKRA_CALLBACK JsDiagDebugEventHandler(
    JsDiagDebugEvent debugEvent,
    JsValueRef eventData,
    void* callbackState);

  v8::Local<v8::Context> debuggerContext() const;

  void DebugEventHandler(
    JsDiagDebugEvent debugEvent,
    JsValueRef eventData);

  void HandleSourceEvents(JsValueRef eventData, bool success);
  void HandleBreak(JsValueRef eventData);

  void ClearBreakpoints();

  v8::Isolate* m_isolate;
  V8InspectorImpl* m_inspector;
  int m_lastContextId;
  int m_enableCount;
  bool m_breakpointsActivated;
  v8::Global<v8::Context> m_debuggerContext;
  v8::Local<v8::Context> m_pausedContext;
  bool m_runningNestedMessageLoop;
  int m_ignoreScriptParsedEventsCounter;

  int m_maxAsyncCallStackDepth;
  bool m_pauseOnNextStatement;
  protocol::HashMap<V8DebuggerAgentImpl*, int> m_maxAsyncCallStackDepthMap;

  DISALLOW_COPY_AND_ASSIGN(V8Debugger);
};

}  // namespace v8_inspector

#endif  // DEPS_CHAKRASHIM_SRC_INSPECTOR_V8_DEBUGGER_H_