[inspector] Initial import of v8_inspector.

src/inspector/V8InjectedScriptHost.cpp

+// Copyright 2015 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 "src/inspector/V8InjectedScriptHost.h"
+
+#include "src/inspector/InjectedScriptNative.h"
+#include "src/inspector/StringUtil.h"
+#include "src/inspector/V8Compat.h"
+#include "src/inspector/V8Debugger.h"
+#include "src/inspector/V8InspectorImpl.h"
+#include "src/inspector/V8InternalValueType.h"
+#include "src/inspector/V8ValueCopier.h"
+#include "src/inspector/public/V8InspectorClient.h"
+
+namespace v8_inspector {
+
+namespace {
+
+void setFunctionProperty(v8::Local<v8::Context> context,
+                         v8::Local<v8::Object> obj, const char* name,
+                         v8::FunctionCallback callback,
+                         v8::Local<v8::External> external) {
+  v8::Local<v8::String> funcName =
+      toV8StringInternalized(context->GetIsolate(), name);
+  v8::Local<v8::Function> func;
+  if (!V8_FUNCTION_NEW_REMOVE_PROTOTYPE(context, callback, external, 0)
+           .ToLocal(&func))
+    return;
+  func->SetName(funcName);
+  createDataProperty(context, obj, funcName, func);
+}
+
+V8InspectorImpl* unwrapInspector(
+    const v8::FunctionCallbackInfo<v8::Value>& info) {
+  DCHECK(!info.Data().IsEmpty());
+  DCHECK(info.Data()->IsExternal());
+  V8InspectorImpl* inspector =
+      static_cast<V8InspectorImpl*>(info.Data().As<v8::External>()->Value());
+  DCHECK(inspector);
+  return inspector;
+}
+
+}  // namespace
+
+v8::Local<v8::Object> V8InjectedScriptHost::create(
+    v8::Local<v8::Context> context, V8InspectorImpl* inspector) {
+  v8::Isolate* isolate = inspector->isolate();
+  v8::Local<v8::Object> injectedScriptHost = v8::Object::New(isolate);
+  bool success = injectedScriptHost->SetPrototype(context, v8::Null(isolate))
+                     .FromMaybe(false);
+  DCHECK(success);
+  v8::Local<v8::External> debuggerExternal =
+      v8::External::New(isolate, inspector);
+  setFunctionProperty(context, injectedScriptHost, "internalConstructorName",
+                      V8InjectedScriptHost::internalConstructorNameCallback,
+                      debuggerExternal);
+  setFunctionProperty(
+      context, injectedScriptHost, "formatAccessorsAsProperties",
+      V8InjectedScriptHost::formatAccessorsAsProperties, debuggerExternal);
+  setFunctionProperty(context, injectedScriptHost, "subtype",
+                      V8InjectedScriptHost::subtypeCallback, debuggerExternal);
+  setFunctionProperty(context, injectedScriptHost, "getInternalProperties",
+                      V8InjectedScriptHost::getInternalPropertiesCallback,
+                      debuggerExternal);
+  setFunctionProperty(context, injectedScriptHost, "objectHasOwnProperty",
+                      V8InjectedScriptHost::objectHasOwnPropertyCallback,
+                      debuggerExternal);
+  setFunctionProperty(context, injectedScriptHost, "bind",
+                      V8InjectedScriptHost::bindCallback, debuggerExternal);
+  setFunctionProperty(context, injectedScriptHost, "proxyTargetValue",
+                      V8InjectedScriptHost::proxyTargetValueCallback,
+                      debuggerExternal);
+  return injectedScriptHost;
+}
+
+void V8InjectedScriptHost::internalConstructorNameCallback(
+    const v8::FunctionCallbackInfo<v8::Value>& info) {
+  if (info.Length() < 1 || !info[0]->IsObject()) return;
+
+  v8::Local<v8::Object> object = info[0].As<v8::Object>();
+  info.GetReturnValue().Set(object->GetConstructorName());
+}
+
+void V8InjectedScriptHost::formatAccessorsAsProperties(
+    const v8::FunctionCallbackInfo<v8::Value>& info) {
+  DCHECK_EQ(info.Length(), 2);
+  info.GetReturnValue().Set(false);
+  if (!info[1]->IsFunction()) return;
+  // Check that function is user-defined.
+  if (info[1].As<v8::Function>()->ScriptId() != v8::UnboundScript::kNoScriptId)
+    return;
+  info.GetReturnValue().Set(
+      unwrapInspector(info)->client()->formatAccessorsAsProperties(info[0]));
+}
+
+void V8InjectedScriptHost::subtypeCallback(
+    const v8::FunctionCallbackInfo<v8::Value>& info) {
+  if (info.Length() < 1) return;
+
+  v8::Isolate* isolate = info.GetIsolate();
+  v8::Local<v8::Value> value = info[0];
+  if (value->IsObject()) {
+    v8::Local<v8::Value> internalType = v8InternalValueTypeFrom(
+        isolate->GetCurrentContext(), v8::Local<v8::Object>::Cast(value));
+    if (internalType->IsString()) {
+      info.GetReturnValue().Set(internalType);
+      return;
+    }
+  }
+  if (value->IsArray() || value->IsArgumentsObject()) {
+    info.GetReturnValue().Set(toV8StringInternalized(isolate, "array"));
+    return;
+  }
+  if (value->IsTypedArray()) {
+    info.GetReturnValue().Set(toV8StringInternalized(isolate, "typedarray"));
+    return;
+  }
+  if (value->IsDate()) {
+    info.GetReturnValue().Set(toV8StringInternalized(isolate, "date"));
+    return;
+  }
+  if (value->IsRegExp()) {
+    info.GetReturnValue().Set(toV8StringInternalized(isolate, "regexp"));
+    return;
+  }
+  if (value->IsMap() || value->IsWeakMap()) {
+    info.GetReturnValue().Set(toV8StringInternalized(isolate, "map"));
+    return;
+  }
+  if (value->IsSet() || value->IsWeakSet()) {
+    info.GetReturnValue().Set(toV8StringInternalized(isolate, "set"));
+    return;
+  }
+  if (value->IsMapIterator() || value->IsSetIterator()) {
+    info.GetReturnValue().Set(toV8StringInternalized(isolate, "iterator"));
+    return;
+  }
+  if (value->IsGeneratorObject()) {
+    info.GetReturnValue().Set(toV8StringInternalized(isolate, "generator"));
+    return;
+  }
+  if (value->IsNativeError()) {
+    info.GetReturnValue().Set(toV8StringInternalized(isolate, "error"));
+    return;
+  }
+  if (value->IsProxy()) {
+    info.GetReturnValue().Set(toV8StringInternalized(isolate, "proxy"));
+    return;
+  }
+  if (value->IsPromise()) {
+    info.GetReturnValue().Set(toV8StringInternalized(isolate, "promise"));
+    return;
+  }
+  std::unique_ptr<StringBuffer> subtype =
+      unwrapInspector(info)->client()->valueSubtype(value);
+  if (subtype) {
+    info.GetReturnValue().Set(toV8String(isolate, subtype->string()));
+    return;
+  }
+}
+
+void V8InjectedScriptHost::getInternalPropertiesCallback(
+    const v8::FunctionCallbackInfo<v8::Value>& info) {
+  if (info.Length() < 1) return;
+  v8::Local<v8::Array> properties;
+  if (unwrapInspector(info)
+          ->debugger()
+          ->internalProperties(info.GetIsolate()->GetCurrentContext(), info[0])
+          .ToLocal(&properties))
+    info.GetReturnValue().Set(properties);
+}
+
+void V8InjectedScriptHost::objectHasOwnPropertyCallback(
+    const v8::FunctionCallbackInfo<v8::Value>& info) {
+  if (info.Length() < 2 || !info[0]->IsObject() || !info[1]->IsString()) return;
+  bool result = info[0]
+                    .As<v8::Object>()
+                    ->HasOwnProperty(info.GetIsolate()->GetCurrentContext(),
+                                     v8::Local<v8::String>::Cast(info[1]))
+                    .FromMaybe(false);
+  info.GetReturnValue().Set(v8::Boolean::New(info.GetIsolate(), result));
+}
+
+void V8InjectedScriptHost::bindCallback(
+    const v8::FunctionCallbackInfo<v8::Value>& info) {
+  if (info.Length() < 2 || !info[1]->IsString()) return;
+  InjectedScriptNative* injectedScriptNative =
+      InjectedScriptNative::fromInjectedScriptHost(info.Holder());
+  if (!injectedScriptNative) return;
+
+  v8::Local<v8::String> v8groupName = info[1]->ToString(info.GetIsolate());
+  String16 groupName = toProtocolStringWithTypeCheck(v8groupName);
+  int id = injectedScriptNative->bind(info[0], groupName);
+  info.GetReturnValue().Set(id);
+}
+
+void V8InjectedScriptHost::proxyTargetValueCallback(
+    const v8::FunctionCallbackInfo<v8::Value>& info) {
+  if (info.Length() != 1 || !info[0]->IsProxy()) {
+    NOTREACHED();
+    return;
+  }
+  v8::Local<v8::Object> target = info[0].As<v8::Proxy>();
+  while (target->IsProxy())
+    target = v8::Local<v8::Proxy>::Cast(target)->GetTarget();
+  info.GetReturnValue().Set(target);
+}
+
+}  // namespace v8_inspector