Added command line debugger to D8 shell....

src/d8.cc

Index: src/d8.cc
===================================================================
--- src/d8.cc	(revision 993)
+++ src/d8.cc	(working copy)
@@ -29,6 +29,7 @@
 #include <stdlib.h>
 
 #include "d8.h"
+#include "d8-debug.h"
 #include "debug.h"
 #include "api.h"
 #include "natives.h"
@@ -98,6 +99,10 @@
                           bool report_exceptions) {
   HandleScope handle_scope;
   TryCatch try_catch;
+  if (i::FLAG_debugger) {
+    // When debugging make exceptions appear to be uncaught.
+    try_catch.SetVerbose(true);
+  }
   Handle<Script> script = Script::Compile(source, name);
   if (script.IsEmpty()) {
     // Print errors that happened during compilation.
@@ -212,6 +217,46 @@
 }
 
 
+Handle<String> Shell::DebugEventToText(Handle<Object> event) {
+  HandleScope handle_scope;
+  Context::Scope context_scope(utility_context_);
+  Handle<Object> global = utility_context_->Global();
+  Handle<Value> fun = global->Get(String::New("DebugEventToText"));
+  TryCatch try_catch;
+  try_catch.SetVerbose(true);
+  static const int kArgc = 1;
+  Handle<Value> argv[kArgc] = { event };
+  Handle<Value> val = Handle<Function>::Cast(fun)->Call(global, kArgc, argv);
+  if (try_catch.HasCaught()) {
+    return handle_scope.Close(try_catch.Exception()->ToString());
+  } else {
+    return handle_scope.Close(Handle<String>::Cast(val));
+  }
+}
+
+
+Handle<Value> Shell::DebugCommandToJSONRequest(Handle<String> command) {
+  Context::Scope context_scope(utility_context_);
+  Handle<Object> global = utility_context_->Global();
+  Handle<Value> fun = global->Get(String::New("DebugCommandToJSONRequest"));
+  static const int kArgc = 1;
+  Handle<Value> argv[kArgc] = { command };
+  Handle<Value> val = Handle<Function>::Cast(fun)->Call(global, kArgc, argv);
+  return val;
+}
+
+
+Handle<Object> Shell::DebugResponseDetails(Handle<String> response) {
+  Context::Scope context_scope(utility_context_);
+  Handle<Object> global = utility_context_->Global();
+  Handle<Value> fun = global->Get(String::New("DebugResponseDetails"));
+  static const int kArgc = 1;
+  Handle<Value> argv[kArgc] = { response };
+  Handle<Value> val = Handle<Function>::Cast(fun)->Call(global, kArgc, argv);
+  return Handle<Object>::Cast(val);
+}
+
+
 int32_t* Counter::Bind(const char* name) {
   int i;
   for (i = 0; i < kMaxNameSize - 1 && name[i]; i++)
@@ -415,6 +460,8 @@
         return 1;
     }
   }
+  if (i::FLAG_debugger)
+    v8::Debug::AddDebugEventListener(HandleDebugEvent);
   if (run_shell)
     RunShell();
   OnExit();