Get rid of dependencies on v8.h in public header files

src/JsValue.cpp

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2013 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <vector>
 #include <AdblockPlus.h>
-#include <vector>
-
-namespace
-{
-  std::string fromV8String(v8::Handle<v8::Value> value)
-  {
-    v8::String::Utf8Value stringValue(value);
-    if (stringValue.length())
-      return std::string(*stringValue, stringValue.length());
-    else
-      return std::string();
-  }
-
-  v8::Local<v8::String> toV8String(const std::string& str)
-  {
-    return v8::String::New(str.c_str(), str.length());
-  }
-}
+
+#include "JsContext.h"
+#include "JsError.h"
+#include "Utils.h"
 
 AdblockPlus::JsValue::JsValue(AdblockPlus::JsEnginePtr jsEngine,
       v8::Handle<v8::Value> value)
     : jsEngine(jsEngine),
-      value(v8::Persistent<v8::Value>::New(jsEngine->isolate, value))
+      value(new v8::Persistent<v8::Value>(v8::Persistent<v8::Value>::New(jsEngine->isolate, value)))
 {
 }
 
 AdblockPlus::JsValue::JsValue(AdblockPlus::JsValuePtr value)
     : jsEngine(value->jsEngine),
-      value(v8::Persistent<v8::Value>::New(jsEngine->isolate, value->value))
+      value(new v8::Persistent<v8::Value>(v8::Persistent<v8::Value>::New(jsEngine->isolate, *value->value)))
 {
 }
 
 AdblockPlus::JsValue::~JsValue()
 {
-  value.Dispose(jsEngine->isolate);
+  value->Dispose(jsEngine->isolate);
 }
 
 bool AdblockPlus::JsValue::IsUndefined() const
 {
-  const JsEngine::Context context(jsEngine);
-  return value->IsUndefined();
+  const JsContext context(jsEngine);
+  return (*value)->IsUndefined();
 }
 
 bool AdblockPlus::JsValue::IsNull() const
 {
-  const JsEngine::Context context(jsEngine);
-  return value->IsNull();
+  const JsContext context(jsEngine);
+  return (*value)->IsNull();
 }
 
 bool AdblockPlus::JsValue::IsString() const
 {
-  const JsEngine::Context context(jsEngine);
-  return value->IsString() || value->IsStringObject();
+  const JsContext context(jsEngine);
+  return (*value)->IsString() || (*value)->IsStringObject();
 }
 
 bool AdblockPlus::JsValue::IsNumber() const
 {
-  const JsEngine::Context context(jsEngine);
-  return value->IsNumber() || value->IsNumberObject();
+  const JsContext context(jsEngine);
+  return (*value)->IsNumber() || (*value)->IsNumberObject();
 }
 
 bool AdblockPlus::JsValue::IsBool() const
 {
-  const JsEngine::Context context(jsEngine);
-  return value->IsBoolean() || value->IsBooleanObject();
+  const JsContext context(jsEngine);
+  return (*value)->IsBoolean() || (*value)->IsBooleanObject();
 }
 
 bool AdblockPlus::JsValue::IsObject() const
 {
-  const JsEngine::Context context(jsEngine);
-  return value->IsObject();
+  const JsContext context(jsEngine);
+  return (*value)->IsObject();
 }
 
 bool AdblockPlus::JsValue::IsArray() const
 {
-  const JsEngine::Context context(jsEngine);
-  return value->IsArray();
+  const JsContext context(jsEngine);
+  return (*value)->IsArray();
 }
 
 bool AdblockPlus::JsValue::IsFunction() const
 {
-  const JsEngine::Context context(jsEngine);
-  return value->IsFunction();
+  const JsContext context(jsEngine);
+  return (*value)->IsFunction();
 }
 
 std::string AdblockPlus::JsValue::AsString() const
 {
-  const JsEngine::Context context(jsEngine);
-  return fromV8String(value);
+  const JsContext context(jsEngine);
+  return Utils::FromV8String(*value);
 }
 
 int64_t AdblockPlus::JsValue::AsInt() const
 {
-  const JsEngine::Context context(jsEngine);
-  return value->IntegerValue();
+  const JsContext context(jsEngine);
+  return (*value)->IntegerValue();
 }
 
 bool AdblockPlus::JsValue::AsBool() const
 {
-  const JsEngine::Context context(jsEngine);
-  return value->BooleanValue();
+  const JsContext context(jsEngine);
+  return (*value)->BooleanValue();
 }
 
 AdblockPlus::JsValueList AdblockPlus::JsValue::AsList() const
 {
   if (!IsArray())
     throw std::runtime_error("Cannot convert a non-array to list");
 
-  const JsEngine::Context context(jsEngine);
+  const JsContext context(jsEngine);
   JsValueList result;
-  v8::Persistent<v8::Array> array = v8::Persistent<v8::Array>::Cast(value);
+  v8::Persistent<v8::Array> array = v8::Persistent<v8::Array>::Cast(*value);
   uint32_t length = array->Length();
   for (uint32_t i = 0; i < length; i++)
   {
     v8::Local<v8::Value> item = array->Get(i);
     result.push_back(JsValuePtr(new JsValue(jsEngine, item)));
   }
   return result;
 }
 
 std::vector<std::string> AdblockPlus::JsValue::GetOwnPropertyNames() const
 {
   if (!IsObject())
     throw new std::runtime_error("Attempting to get propert list for a non-object");
 
-  const JsEngine::Context context(jsEngine);
-  const v8::Persistent<v8::Object> object = v8::Persistent<v8::Object>::Cast(value);
+  const JsContext context(jsEngine);
+  const v8::Persistent<v8::Object> object = v8::Persistent<v8::Object>::Cast(*value);
   JsValueList properties = JsValuePtr(new JsValue(jsEngine, object->GetOwnPropertyNames()))->AsList();
   std::vector<std::string> result;
   for (JsValueList::iterator it = properties.begin(); it != properties.end(); ++it)
     result.push_back((*it)->AsString());
   return result;
 }
 
 
 AdblockPlus::JsValuePtr AdblockPlus::JsValue::GetProperty(const std::string& name) const
 {
   if (!IsObject())
     throw new std::runtime_error("Attempting to get property of a non-object");
 
-  const JsEngine::Context context(jsEngine);
-  v8::Local<v8::String> property = toV8String(name);
-  v8::Persistent<v8::Object> obj = v8::Persistent<v8::Object>::Cast(value);
+  const JsContext context(jsEngine);
+  v8::Local<v8::String> property = Utils::ToV8String(name);
+  v8::Persistent<v8::Object> obj = v8::Persistent<v8::Object>::Cast(*value);
   return JsValuePtr(new JsValue(jsEngine, obj->Get(property)));
 }
 
 void AdblockPlus::JsValue::SetProperty(const std::string& name, v8::Handle<v8::Value> val)
 {
   if (!IsObject())
     throw new std::runtime_error("Attempting to set property on a non-object");
 
-  v8::Local<v8::String> property = toV8String(name);
-  v8::Persistent<v8::Object> obj = v8::Persistent<v8::Object>::Cast(value);
+  v8::Local<v8::String> property = Utils::ToV8String(name);
+  v8::Persistent<v8::Object> obj = v8::Persistent<v8::Object>::Cast(*value);
   obj->Set(property, val);
 }
 
 void AdblockPlus::JsValue::SetProperty(const std::string& name, const std::string& val)
 {
-  const JsEngine::Context context(jsEngine);
-  SetProperty(name, toV8String(val));
+  const JsContext context(jsEngine);
+  SetProperty(name, Utils::ToV8String(val));
 }
 
 void AdblockPlus::JsValue::SetProperty(const std::string& name, int64_t val)
 {
-  const JsEngine::Context context(jsEngine);
+  const JsContext context(jsEngine);
   SetProperty(name, v8::Number::New(val));
 }
 
 void AdblockPlus::JsValue::SetProperty(const std::string& name, JsValuePtr val)
 {
-  const JsEngine::Context context(jsEngine);
-  SetProperty(name, val->value);
+  const JsContext context(jsEngine);
+  SetProperty(name, *val->value);
 }
 
 void AdblockPlus::JsValue::SetProperty(const std::string& name, bool val)
 {
-  const JsEngine::Context context(jsEngine);
+  const JsContext context(jsEngine);
   SetProperty(name, v8::Boolean::New(val));
 }
 
 std::string AdblockPlus::JsValue::GetClass() const
 {
   if (!IsObject())
     throw new std::runtime_error("Cannot get constructor of a non-object");
 
-  const JsEngine::Context context(jsEngine);
-  v8::Persistent<v8::Object> obj = v8::Persistent<v8::Object>::Cast(value);
-  return fromV8String(obj->GetConstructorName());
+  const JsContext context(jsEngine);
+  v8::Persistent<v8::Object> obj = v8::Persistent<v8::Object>::Cast(*value);
+  return Utils::FromV8String(obj->GetConstructorName());
 }
 
 AdblockPlus::JsValuePtr AdblockPlus::JsValue::Call(
     const JsValueList& params,
     AdblockPlus::JsValuePtr thisPtr) const
 {
   if (!IsFunction())
     throw new std::runtime_error("Attempting to call a non-function");
 
-  const JsEngine::Context context(jsEngine);
+  const JsContext context(jsEngine);
 
   if (!thisPtr)
-    thisPtr = JsValuePtr(new JsValue(jsEngine, jsEngine->context->Global()));
+    thisPtr = JsValuePtr(new JsValue(jsEngine, (*jsEngine->context)->Global()));
   if (!thisPtr->IsObject())
     throw new std::runtime_error("`this` pointer has to be an object");
-  v8::Persistent<v8::Object> thisObj = v8::Persistent<v8::Object>::Cast(thisPtr->value);
+  v8::Persistent<v8::Object> thisObj = v8::Persistent<v8::Object>::Cast(*thisPtr->value);
 
   std::vector<v8::Handle<v8::Value> > argv;
   for (JsValueList::const_iterator it = params.begin(); it != params.end(); ++it)
-    argv.push_back((*it)->value);
+    argv.push_back(*(*it)->value);
 
   const v8::TryCatch tryCatch;
-  v8::Persistent<v8::Function> func = v8::Persistent<v8::Function>::Cast(value);
+  v8::Persistent<v8::Function> func = v8::Persistent<v8::Function>::Cast(*value);
   v8::Local<v8::Value> result = func->Call(thisObj, argv.size(),
       argv.size() ? &argv.front() : 0);
 
   if (tryCatch.HasCaught())
     throw AdblockPlus::JsError(tryCatch.Exception(), tryCatch.Message());
 
   return JsValuePtr(new JsValue(jsEngine, result));
 }