DevTools: introduce protocol::Value, baseline for hierarchical data in remote debugging protocol.

third_party/WebKit/Source/platform/inspector_protocol/Dispatcher_cpp.template

 // This file is generated
 
 // Copyright (c) 2016 The Chromium 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 "platform/inspector_protocol/{{class_name}}.h"
 
-#include "platform/JSONParser.h"
 #include "platform/inspector_protocol/FrontendChannel.h"
+#include "platform/inspector_protocol/Parser.h"
 #include "wtf/text/CString.h"
 
 namespace blink {
 namespace protocol {
 
 using protocol::Maybe;
 
 class DispatcherImpl : public Dispatcher {
 public:
     DispatcherImpl(FrontendChannel* frontendChannel)
@@ skipping 17 matching lines @@
         m_commonErrors.insert(InvalidParams, -32602);
         m_commonErrors.insert(InternalError, -32603);
         m_commonErrors.insert(ServerError, -32000);
     }
 
     virtual void clearFrontend() { m_frontendChannel = 0; }
     virtual void dispatch(int sessionId, const String& message);
     virtual void reportProtocolError(int sessionId, int callId, CommonErrorCode, const String& errorMessage, ErrorSupport* errors) const;
     using Dispatcher::reportProtocolError;
 
-    void sendResponse(int sessionId, int callId, const ErrorString& invocationError, ErrorSupport* errors, PassRefPtr<JSONObject> result);
+    void sendResponse(int sessionId, int callId, const ErrorString& invocationError, ErrorSupport* errors, PassRefPtr<protocol::DictionaryValue> result);
     bool isActive() { return m_frontendChannel; }
 
 {% for domain in api.domains %}
     virtual void registerAgent({{domain.domain}}CommandHandler* agent) { ASSERT(!m_{{domain.domain | lower}}Agent); m_{{domain.domain | lower}}Agent = agent; }
 {% endfor %}
 
 private:
-    using CallHandler = void (DispatcherImpl::*)(int sessionId, int callId, JSONObject* messageObject, ErrorSupport* errors);
+    using CallHandler = void (DispatcherImpl::*)(int sessionId, int callId, DictionaryValue* messageObject, ErrorSupport* errors);
     using DispatchMap = HashMap<String, CallHandler>;
 
 {% for domain in api.domains %}
   {% for command in domain.commands %}
     {% if "redirect" in command %}{% continue %}{% endif %}
     {% if "handlers" in command and not ("renderer" in command["handlers"]) %}{% continue %}{% endif %}
-    void {{domain.domain}}_{{command.name}}(int sessionId, int callId, JSONObject* requestMessageObject, ErrorSupport*);
+    void {{domain.domain}}_{{command.name}}(int sessionId, int callId, DictionaryValue* requestMessageObject, ErrorSupport*);
   {% endfor %}
 {% endfor %}
 
     FrontendChannel* m_frontendChannel;
 
 {% for domain in api.domains %}
     {{domain.domain}}CommandHandler* m_{{domain.domain | lower}}Agent;
 {% endfor %}
 
-    void sendResponse(int sessionId, int callId, ErrorString invocationError, PassRefPtr<JSONObject> result)
+    void sendResponse(int sessionId, int callId, ErrorString invocationError, PassRefPtr<protocol::DictionaryValue> result)
     {
         sendResponse(sessionId, callId, invocationError, nullptr, result);
     }
 
     void sendResponse(int sessionId, int callId, ErrorString invocationError)
     {
-        sendResponse(sessionId, callId, invocationError, nullptr, JSONObject::create());
+        sendResponse(sessionId, callId, invocationError, nullptr, DictionaryValue::create());
     }
 
     static const char InvalidParamsFormatString[];
 
     DispatchMap m_dispatchMap;
     Vector<int> m_commonErrors;
 };
 
 const char DispatcherImpl::InvalidParamsFormatString[] = "Some arguments of method '%s' can't be processed";
 {% for domain in api.domains %}
   {% for command in domain.commands %}
     {% if "redirect" in command %}{% continue %}{% endif %}
     {% if "handlers" in command and not ("renderer" in command["handlers"]) %}{% continue %}{% endif %}
 
     {% if "async" in command %}
 Dispatcher::{{domain.domain}}CommandHandler::{{command.name | to_title_case}}Callback::{{command.name | to_title_case}}Callback(PassRefPtr<DispatcherImpl> backendImpl, int sessionId, int id) : CallbackBase(backendImpl, sessionId, id) { }
 
 void Dispatcher::{{domain.domain}}CommandHandler::{{command.name | to_title_case}}Callback::sendSuccess(
       {%- for parameter in command.returns -%}
         {%- if "optional" in parameter -%}
         const Maybe<{{resolve_type(parameter).raw_type}}>& {{parameter.name}}
         {%- else -%}
         {{resolve_type(parameter).pass_type}} {{parameter.name}}
         {%- endif -%}
         {%- if not loop.last -%}, {% endif -%}
       {% endfor %})
 {
-    RefPtr<JSONObject> resultObject = JSONObject::create();
+    RefPtr<protocol::DictionaryValue> resultObject = DictionaryValue::create();
       {% for parameter in command.returns %}
         {% if "optional" in parameter %}
     if ({{parameter.name}}.isJust())
         resultObject->setValue("{{parameter.name}}", toValue({{parameter.name}}.fromJust()));
        {% else %}
     resultObject->setValue("{{parameter.name}}", toValue({{parameter.name}}));
         {% endif %}
       {% endfor %}
     sendIfActive(resultObject.release(), ErrorString());
 }
     {% endif %}
 
-void DispatcherImpl::{{domain.domain}}_{{command.name}}(int sessionId, int callId, JSONObject* requestMessageObject, ErrorSupport* errors)
+void DispatcherImpl::{{domain.domain}}_{{command.name}}(int sessionId, int callId, DictionaryValue* requestMessageObject, ErrorSupport* errors)
 {
     if (!m_{{domain.domain | lower}}Agent)
         errors->addError("{{domain.domain}} handler is not available.");
 
     if (errors->hasErrors()) {
         reportProtocolError(sessionId, callId, InvalidParams, String::format(InvalidParamsFormatString, "{{domain.domain}}.{{command.name}}"), errors);
         return;
     }
     {% if "parameters" in command %}
 
     // Prepare input parameters.
-    RefPtr<JSONObject> object = JSONObject::cast(requestMessageObject->get("params"));
+    RefPtr<protocol::DictionaryValue> object = DictionaryValue::cast(requestMessageObject->get("params"));
     errors->push();
       {% for property in command.parameters %}
-    RefPtr<JSONValue> {{property.name}}Value = object ? object->get("{{property.name}}") : nullptr;
+    RefPtr<protocol::Value> {{property.name}}Value = object ? object->get("{{property.name}}") : nullptr;
         {% if property.optional %}
     Maybe<{{resolve_type(property).raw_type}}> in_{{property.name}};
     if ({{property.name}}Value) {
         errors->setName("{{property.name}}");
         in_{{property.name}} = FromValue<{{resolve_type(property).raw_type}}>::parse({{property.name}}Value, errors);
     }
         {% else %}
     errors->setName("{{property.name}}");
     {{resolve_type(property).type}} in_{{property.name}} = FromValue<{{resolve_type(property).raw_type}}>::parse({{property.name}}Value, errors);
         {% endif %}
       {% endfor %}
     errors->pop();
     if (errors->hasErrors()) {
         reportProtocolError(sessionId, callId, InvalidParams, String::format(InvalidParamsFormatString, "{{domain.domain}}.{{command.name}}"), errors);
         return;
     }
     {% endif %}
 
     {% if "async" in command %}
     RefPtr<{{domain.domain}}CommandHandler::{{command.name | to_title_case}}Callback> callback = adoptRef(new {{domain.domain}}CommandHandler::{{command.name | to_title_case}}Callback(this, sessionId, callId));
     {% elif "returns" in command %}
     // Declare output parameters.
-    RefPtr<JSONObject> result = JSONObject::create();
+    RefPtr<protocol::DictionaryValue> result = DictionaryValue::create();
       {% for property in command.returns %}
         {% if "optional" in property %}
     Maybe<{{resolve_type(property).raw_type}}> out_{{property.name}};
         {% else %}
     {{resolve_type(property).type}} out_{{property.name}};
         {% endif %}
       {% endfor %}
     {% endif %}
 
     ErrorString error;
@@ skipping 33 matching lines @@
 
 PassRefPtr<Dispatcher> Dispatcher::create(FrontendChannel* frontendChannel)
 {
     return adoptRef(new DispatcherImpl(frontendChannel));
 }
 
 void DispatcherImpl::dispatch(int sessionId, const String& message)
 {
     RefPtr<Dispatcher> protect(this);
     int callId = 0;
-    RefPtr<JSONValue> parsedMessage = parseJSON(message);
+    RefPtr<protocol::Value> parsedMessage = parseJSON(message);
     ASSERT(parsedMessage);
-    RefPtr<JSONObject> messageObject = JSONObject::cast(parsedMessage.release());
+    RefPtr<protocol::DictionaryValue> messageObject = DictionaryValue::cast(parsedMessage.release());
     ASSERT(messageObject);
 
-    RefPtr<JSONValue> callIdValue = messageObject->get("id");
+    RefPtr<protocol::Value> callIdValue = messageObject->get("id");
     bool success = callIdValue->asNumber(&callId);
     ASSERT_UNUSED(success, success);
 
-    RefPtr<JSONValue> methodValue = messageObject->get("method");
+    RefPtr<protocol::Value> methodValue = messageObject->get("method");
     String method;
     success = methodValue && methodValue->asString(&method);
     ASSERT_UNUSED(success, success);
 
     HashMap<String, CallHandler>::iterator it = m_dispatchMap.find(method);
     if (it == m_dispatchMap.end()) {
         reportProtocolError(sessionId, callId, MethodNotFound, "'" + method + "' wasn't found");
         return;
     }
 
     protocol::ErrorSupport errors;
     ((*this).*it->value)(sessionId, callId, messageObject.get(), &errors);
 }
 
-void DispatcherImpl::sendResponse(int sessionId, int callId, const ErrorString& invocationError, ErrorSupport* errors, PassRefPtr<JSONObject> result)
+void DispatcherImpl::sendResponse(int sessionId, int callId, const ErrorString& invocationError, ErrorSupport* errors, PassRefPtr<protocol::DictionaryValue> result)
 {
     if (invocationError.length() || (errors && errors->hasErrors())) {
         reportProtocolError(sessionId, callId, ServerError, invocationError, errors);
         return;
     }
 
-    RefPtr<JSONObject> responseMessage = JSONObject::create();
+    RefPtr<protocol::DictionaryValue> responseMessage = DictionaryValue::create();
     responseMessage->setNumber("id", callId);
     responseMessage->setObject("result", result);
     if (m_frontendChannel)
         m_frontendChannel->sendProtocolResponse(sessionId, callId, responseMessage.release());
 }
 
 void Dispatcher::reportProtocolError(int sessionId, int callId, CommonErrorCode code, const String& errorMessage) const
 {
     ErrorSupport errors;
     reportProtocolError(sessionId, callId, code, errorMessage, &errors);
 }
 
 void DispatcherImpl::reportProtocolError(int sessionId, int callId, CommonErrorCode code, const String& errorMessage, ErrorSupport* errors) const
 {
     ASSERT(code >=0);
     ASSERT((unsigned)code < m_commonErrors.size());
     ASSERT(m_commonErrors[code]);
-    RefPtr<JSONObject> error = JSONObject::create();
+    RefPtr<protocol::DictionaryValue> error = DictionaryValue::create();
     error->setNumber("code", m_commonErrors[code]);
     error->setString("message", errorMessage);
     ASSERT(error);
     if (errors && errors->hasErrors())
         error->setString("data", errors->errors());
-    RefPtr<JSONObject> message = JSONObject::create();
+    RefPtr<protocol::DictionaryValue> message = DictionaryValue::create();
     message->setObject("error", error);
     message->setNumber("id", callId);
     if (m_frontendChannel)
         m_frontendChannel->sendProtocolResponse(sessionId, callId, message.release());
 }
 
 bool Dispatcher::getCommandName(const String& message, String* result)
 {
-    RefPtr<JSONValue> value = parseJSON(message);
+    RefPtr<protocol::Value> value = parseJSON(message);
     if (!value)
         return false;
 
-    RefPtr<JSONObject> object = JSONObject::cast(value.release());
+    RefPtr<protocol::DictionaryValue> object = DictionaryValue::cast(value.release());
     if (!object)
         return false;
 
     if (!object->getString("method", result))
         return false;
 
     return true;
 }
 
 Dispatcher::CallbackBase::CallbackBase(PassRefPtr<DispatcherImpl> backendImpl, int sessionId, int id)
     : m_backendImpl(backendImpl), m_sessionId(sessionId), m_id(id), m_alreadySent(false) { }
 
 Dispatcher::CallbackBase::~CallbackBase() { }
 
 void Dispatcher::CallbackBase::sendFailure(const ErrorString& error)
 {
     ASSERT(error.length());
     sendIfActive(nullptr, error);
 }
 
 bool Dispatcher::CallbackBase::isActive()
 {
     return !m_alreadySent && m_backendImpl->isActive();
 }
 
-void Dispatcher::CallbackBase::sendIfActive(PassRefPtr<JSONObject> partialMessage, const ErrorString& invocationError)
+void Dispatcher::CallbackBase::sendIfActive(PassRefPtr<protocol::DictionaryValue> partialMessage, const ErrorString& invocationError)
 {
     if (m_alreadySent)
         return;
     m_backendImpl->sendResponse(m_sessionId, m_id, invocationError, nullptr, partialMessage);
     m_alreadySent = true;
 }
 
 } // namespace protocol
 } // namespace blink