Major rework of vm service events.

runtime/vm/service_event.h

+// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#ifndef VM_SERVICE_EVENT_H_
+#define VM_SERVICE_EVENT_H_
+
+#include "vm/debugger.h"
+
+class DebuggerEvent;
+
+namespace dart {
+
+class ServiceEvent {
+ public:
+  enum EventType {
+    kIsolateStart,       // New isolate has started
+    kIsolateExit,        // Isolate has exited
+
+    kPauseStart,         // --pause-isolates-on-start
+    kPauseExit,          // --pause-isolates-on-exit
+    kPauseBreakpoint,
+    kPauseInterrupted,
+    kPauseException,
+    kResume,
+
+    kBreakpointAdded,
+    kBreakpointResolved,
+    kBreakpointRemoved,
+
+    kIllegal,
+  };
+
+  ServiceEvent(Isolate* isolate, EventType event_type)
+      : isolate_(isolate),
+        type_(event_type),
+        breakpoint_(NULL),
+        top_frame_(NULL),
+        exception_(NULL) {}
+
+  explicit ServiceEvent(const DebuggerEvent* debugger_event);
+
+  Isolate* isolate() const { return isolate_; }
+
+  EventType type() const { return type_; }
+
+  SourceBreakpoint* breakpoint() const {
+    return breakpoint_;
+  }
+  void set_breakpoint(SourceBreakpoint* bpt) {
+    ASSERT(type() == kPauseBreakpoint ||
+           type() == kBreakpointAdded ||
+           type() == kBreakpointResolved ||
+           type() == kBreakpointRemoved);
+    breakpoint_ = bpt;
+  }
+
+  ActivationFrame* top_frame() const {
+    return top_frame_;
+  }
+  void set_top_frame(ActivationFrame* frame) {
+    ASSERT(type() == kPauseBreakpoint ||
+           type() == kPauseInterrupted ||
+           type() == kPauseException ||
+           type() == kResume);
+    top_frame_ = frame;
+  }
+
+  const Object* exception() const {
+    return exception_;
+  }
+  void set_exception(const Object* exception) {
+    ASSERT(type_ == kPauseException);
+    exception_ = exception;
+  }
+
+  void PrintJSON(JSONStream* js) const;
+
+  static const char* EventTypeToCString(EventType type);
+
+ private:
+  Isolate* isolate_;
+  EventType type_;
+  SourceBreakpoint* breakpoint_;
+  ActivationFrame* top_frame_;
+  const Object* exception_;
+};
+
+}  // namespace dart
+
+#endif  // VM_SERVICE_EVENT_H_