[inspector] added inspector protocol test runner

test/inspector-protocol/utils-extension.cc

+// 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.
+
+#include "test/inspector-protocol/utils-extension.h"
+
+#include "v8-platform.h"
+
+namespace v8_inspector {
+
+v8::Local<v8::FunctionTemplate> UtilsExtension::GetNativeFunctionTemplate(
+    v8::Isolate* isolate, v8::Local<v8::String> name) {
+  v8::Local<v8::Context> context = isolate->GetCurrentContext();
+  if (name->Equals(context, v8::String::NewFromUtf8(isolate, "print",
+                                                    v8::NewStringType::kNormal)
+                                .ToLocalChecked())
+          .FromJust()) {
+    return v8::FunctionTemplate::New(isolate, UtilsExtension::Print);
+  } else if (name->Equals(context,
+                          v8::String::NewFromUtf8(isolate, "quit",
+                                                  v8::NewStringType::kNormal)
+                              .ToLocalChecked())
+                 .FromJust()) {
+    return v8::FunctionTemplate::New(isolate, UtilsExtension::Quit);
+  }
+  return v8::Local<v8::FunctionTemplate>();
+}
+
+void UtilsExtension::Print(const v8::FunctionCallbackInfo<v8::Value>& args) {
+  for (int i = 0; i < args.Length(); i++) {
+    v8::HandleScope handle_scope(args.GetIsolate());
+    if (i != 0) {
+      printf(" ");
+    }
+
+    // Explicitly catch potential exceptions in toString().
+    v8::TryCatch try_catch(args.GetIsolate());
+    v8::Local<v8::Value> arg = args[i];
+    v8::Local<v8::String> str_obj;
+
+    if (arg->IsSymbol()) {
+      arg = v8::Local<v8::Symbol>::Cast(arg)->Name();
+    }
+    if (!arg->ToString(args.GetIsolate()->GetCurrentContext())
+             .ToLocal(&str_obj)) {
+      try_catch.ReThrow();
+      return;
+    }
+
+    v8::String::Utf8Value str(str_obj);
+    int n = static_cast<int>(fwrite(*str, sizeof(**str), str.length(), stdout));
+    if (n != str.length()) {
+      printf("Error in fwrite\n");
+      Quit(args);
+    }
+  }
+  printf("\n");
+  fflush(stdout);
+}
+
+void UtilsExtension::Quit(const v8::FunctionCallbackInfo<v8::Value>&) {
+  fflush(stdout);
+  fflush(stderr);
+  _exit(0);
+}
+
+}  // namespace v8