Rename fxjse/ to fxjs/ update files to match class names.

This Cl moves the fxjse/ directory to fxjs/ in anticipation of merging in
fpdfsdk/jsapi. In the process the filenames are updated to better match the
class contents. Static methods are moved to anonymous namespaces as possible.

Review-Url: https://codereview.chromium.org/2136213002

1 files changed, 433 insertions, 0 deletions

diff --git a/fxjs/cfxjse_class.cpp b/fxjs/cfxjse_class.cpp
new file mode 100644
index 0000000000..de22af7681
--- /dev/null
+++ b/fxjs/cfxjse_class.cpp
@@ -0,0 +1,433 @@
+// Copyright 2016 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "fxjs/include/cfxjse_class.h"
+
+#include "fxjs/include/cfxjse_context.h"
+#include "fxjs/include/cfxjse_value.h"
+
+namespace {
+
+void V8FunctionCallback_Wrapper(
+    const v8::FunctionCallbackInfo<v8::Value>& info) {
+  const FXJSE_FUNCTION_DESCRIPTOR* lpFunctionInfo =
+      static_cast<FXJSE_FUNCTION_DESCRIPTOR*>(
+          info.Data().As<v8::External>()->Value());
+  if (!lpFunctionInfo)
+    return;
+
+  CFX_ByteStringC szFunctionName(lpFunctionInfo->name);
+  std::unique_ptr<CFXJSE_Value> lpThisValue(
+      new CFXJSE_Value(info.GetIsolate()));
+  lpThisValue->ForceSetValue(info.This());
+  std::unique_ptr<CFXJSE_Value> lpRetValue(new CFXJSE_Value(info.GetIsolate()));
+  CFXJSE_Arguments impl(&info, lpRetValue.get());
+  lpFunctionInfo->callbackProc(lpThisValue.get(), szFunctionName, impl);
+  if (!lpRetValue->DirectGetValue().IsEmpty())
+    info.GetReturnValue().Set(lpRetValue->DirectGetValue());
+}
+
+void V8ClassGlobalConstructorCallback_Wrapper(
+    const v8::FunctionCallbackInfo<v8::Value>& info) {
+  const FXJSE_CLASS_DESCRIPTOR* lpClassDefinition =
+      static_cast<FXJSE_CLASS_DESCRIPTOR*>(
+          info.Data().As<v8::External>()->Value());
+  if (!lpClassDefinition)
+    return;
+
+  CFX_ByteStringC szFunctionName(lpClassDefinition->name);
+  std::unique_ptr<CFXJSE_Value> lpThisValue(
+      new CFXJSE_Value(info.GetIsolate()));
+  lpThisValue->ForceSetValue(info.This());
+  std::unique_ptr<CFXJSE_Value> lpRetValue(new CFXJSE_Value(info.GetIsolate()));
+  CFXJSE_Arguments impl(&info, lpRetValue.get());
+  lpClassDefinition->constructor(lpThisValue.get(), szFunctionName, impl);
+  if (!lpRetValue->DirectGetValue().IsEmpty())
+    info.GetReturnValue().Set(lpRetValue->DirectGetValue());
+}
+
+void V8GetterCallback_Wrapper(v8::Local<v8::String> property,
+                              const v8::PropertyCallbackInfo<v8::Value>& info) {
+  const FXJSE_PROPERTY_DESCRIPTOR* lpPropertyInfo =
+      static_cast<FXJSE_PROPERTY_DESCRIPTOR*>(
+          info.Data().As<v8::External>()->Value());
+  if (!lpPropertyInfo)
+    return;
+
+  CFX_ByteStringC szPropertyName(lpPropertyInfo->name);
+  std::unique_ptr<CFXJSE_Value> lpThisValue(
+      new CFXJSE_Value(info.GetIsolate()));
+  std::unique_ptr<CFXJSE_Value> lpPropValue(
+      new CFXJSE_Value(info.GetIsolate()));
+  lpThisValue->ForceSetValue(info.This());
+  lpPropertyInfo->getProc(lpThisValue.get(), szPropertyName, lpPropValue.get());
+  info.GetReturnValue().Set(lpPropValue->DirectGetValue());
+}
+
+void V8SetterCallback_Wrapper(v8::Local<v8::String> property,
+                              v8::Local<v8::Value> value,
+                              const v8::PropertyCallbackInfo<void>& info) {
+  const FXJSE_PROPERTY_DESCRIPTOR* lpPropertyInfo =
+      static_cast<FXJSE_PROPERTY_DESCRIPTOR*>(
+          info.Data().As<v8::External>()->Value());
+  if (!lpPropertyInfo)
+    return;
+
+  CFX_ByteStringC szPropertyName(lpPropertyInfo->name);
+  std::unique_ptr<CFXJSE_Value> lpThisValue(
+      new CFXJSE_Value(info.GetIsolate()));
+  std::unique_ptr<CFXJSE_Value> lpPropValue(
+      new CFXJSE_Value(info.GetIsolate()));
+  lpThisValue->ForceSetValue(info.This());
+  lpPropValue->ForceSetValue(value);
+  lpPropertyInfo->setProc(lpThisValue.get(), szPropertyName, lpPropValue.get());
+}
+
+void V8ConstructorCallback_Wrapper(
+    const v8::FunctionCallbackInfo<v8::Value>& info) {
+  if (!info.IsConstructCall())
+    return;
+
+  const FXJSE_CLASS_DESCRIPTOR* lpClassDefinition =
+      static_cast<FXJSE_CLASS_DESCRIPTOR*>(
+          info.Data().As<v8::External>()->Value());
+  if (!lpClassDefinition)
+    return;
+
+  ASSERT(info.This()->InternalFieldCount());
+  info.This()->SetAlignedPointerInInternalField(0, nullptr);
+}
+
+void Context_GlobalObjToString(
+    const v8::FunctionCallbackInfo<v8::Value>& info) {
+  const FXJSE_CLASS_DESCRIPTOR* lpClass = static_cast<FXJSE_CLASS_DESCRIPTOR*>(
+      info.Data().As<v8::External>()->Value());
+  if (!lpClass)
+    return;
+
+  if (info.This() == info.Holder() && lpClass->name) {
+    CFX_ByteString szStringVal;
+    szStringVal.Format("[object %s]", lpClass->name);
+    info.GetReturnValue().Set(v8::String::NewFromUtf8(
+        info.GetIsolate(), szStringVal.c_str(), v8::String::kNormalString,
+        szStringVal.GetLength()));
+    return;
+  }
+  v8::Local<v8::String> local_str =
+      info.This()
+          ->ObjectProtoToString(info.GetIsolate()->GetCurrentContext())
+          .FromMaybe(v8::Local<v8::String>());
+  info.GetReturnValue().Set(local_str);
+}
+
+void DynPropGetterAdapter_MethodCallback(
+    const v8::FunctionCallbackInfo<v8::Value>& info) {
+  v8::Local<v8::Object> hCallBackInfo = info.Data().As<v8::Object>();
+  FXJSE_CLASS_DESCRIPTOR* lpClass = static_cast<FXJSE_CLASS_DESCRIPTOR*>(
+      hCallBackInfo->GetAlignedPointerFromInternalField(0));
+  v8::Local<v8::String> hPropName =
+      hCallBackInfo->GetInternalField(1).As<v8::String>();
+  ASSERT(lpClass && !hPropName.IsEmpty());
+  v8::String::Utf8Value szPropName(hPropName);
+  CFX_ByteStringC szFxPropName = *szPropName;
+  std::unique_ptr<CFXJSE_Value> lpThisValue(
+      new CFXJSE_Value(info.GetIsolate()));
+  lpThisValue->ForceSetValue(info.This());
+  std::unique_ptr<CFXJSE_Value> lpRetValue(new CFXJSE_Value(info.GetIsolate()));
+  CFXJSE_Arguments impl(&info, lpRetValue.get());
+  lpClass->dynMethodCall(lpThisValue.get(), szFxPropName, impl);
+  if (!lpRetValue->DirectGetValue().IsEmpty())
+    info.GetReturnValue().Set(lpRetValue->DirectGetValue());
+}
+
+void DynPropGetterAdapter(const FXJSE_CLASS_DESCRIPTOR* lpClass,
+                          CFXJSE_Value* pObject,
+                          const CFX_ByteStringC& szPropName,
+                          CFXJSE_Value* pValue) {
+  ASSERT(lpClass);
+  int32_t nPropType =
+      lpClass->dynPropTypeGetter == nullptr
+          ? FXJSE_ClassPropType_Property
+          : lpClass->dynPropTypeGetter(pObject, szPropName, FALSE);
+  if (nPropType == FXJSE_ClassPropType_Property) {
+    if (lpClass->dynPropGetter)
+      lpClass->dynPropGetter(pObject, szPropName, pValue);
+  } else if (nPropType == FXJSE_ClassPropType_Method) {
+    if (lpClass->dynMethodCall && pValue) {
+      v8::Isolate* pIsolate = pValue->GetIsolate();
+      v8::HandleScope hscope(pIsolate);
+      v8::Local<v8::ObjectTemplate> hCallBackInfoTemplate =
+          v8::ObjectTemplate::New(pIsolate);
+      hCallBackInfoTemplate->SetInternalFieldCount(2);
+      v8::Local<v8::Object> hCallBackInfo =
+          hCallBackInfoTemplate->NewInstance();
+      hCallBackInfo->SetAlignedPointerInInternalField(
+          0, const_cast<FXJSE_CLASS_DESCRIPTOR*>(lpClass));
+      hCallBackInfo->SetInternalField(
+          1, v8::String::NewFromUtf8(
+                 pIsolate, reinterpret_cast<const char*>(szPropName.raw_str()),
+                 v8::String::kNormalString, szPropName.GetLength()));
+      pValue->ForceSetValue(
+          v8::Function::New(pValue->GetIsolate()->GetCurrentContext(),
+                            DynPropGetterAdapter_MethodCallback, hCallBackInfo,
+                            0, v8::ConstructorBehavior::kThrow)
+              .ToLocalChecked());
+    }
+  }
+}
+
+void DynPropSetterAdapter(const FXJSE_CLASS_DESCRIPTOR* lpClass,
+                          CFXJSE_Value* pObject,
+                          const CFX_ByteStringC& szPropName,
+                          CFXJSE_Value* pValue) {
+  ASSERT(lpClass);
+  int32_t nPropType =
+      lpClass->dynPropTypeGetter == nullptr
+          ? FXJSE_ClassPropType_Property
+          : lpClass->dynPropTypeGetter(pObject, szPropName, FALSE);
+  if (nPropType != FXJSE_ClassPropType_Method) {
+    if (lpClass->dynPropSetter)
+      lpClass->dynPropSetter(pObject, szPropName, pValue);
+  }
+}
+
+FX_BOOL DynPropQueryAdapter(const FXJSE_CLASS_DESCRIPTOR* lpClass,
+                            CFXJSE_Value* pObject,
+                            const CFX_ByteStringC& szPropName) {
+  ASSERT(lpClass);
+  int32_t nPropType =
+      lpClass->dynPropTypeGetter == nullptr
+          ? FXJSE_ClassPropType_Property
+          : lpClass->dynPropTypeGetter(pObject, szPropName, TRUE);
+  return nPropType != FXJSE_ClassPropType_None;
+}
+
+FX_BOOL DynPropDeleterAdapter(const FXJSE_CLASS_DESCRIPTOR* lpClass,
+                              CFXJSE_Value* pObject,
+                              const CFX_ByteStringC& szPropName) {
+  ASSERT(lpClass);
+  int32_t nPropType =
+      lpClass->dynPropTypeGetter == nullptr
+          ? FXJSE_ClassPropType_Property
+          : lpClass->dynPropTypeGetter(pObject, szPropName, FALSE);
+  if (nPropType != FXJSE_ClassPropType_Method) {
+    if (lpClass->dynPropDeleter)
+      return lpClass->dynPropDeleter(pObject, szPropName);
+    return nPropType == FXJSE_ClassPropType_Property ? FALSE : TRUE;
+  }
+  return FALSE;
+}
+
+void NamedPropertyQueryCallback(
+    v8::Local<v8::Name> property,
+    const v8::PropertyCallbackInfo<v8::Integer>& info) {
+  v8::Local<v8::Object> thisObject = info.This();
+  const FXJSE_CLASS_DESCRIPTOR* lpClass = static_cast<FXJSE_CLASS_DESCRIPTOR*>(
+      info.Data().As<v8::External>()->Value());
+  v8::Isolate* pIsolate = info.GetIsolate();
+  v8::HandleScope scope(pIsolate);
+  v8::String::Utf8Value szPropName(property);
+  CFX_ByteStringC szFxPropName(*szPropName, szPropName.length());
+  std::unique_ptr<CFXJSE_Value> lpThisValue(
+      new CFXJSE_Value(info.GetIsolate()));
+  lpThisValue->ForceSetValue(thisObject);
+  if (DynPropQueryAdapter(lpClass, lpThisValue.get(), szFxPropName)) {
+    info.GetReturnValue().Set(v8::DontDelete);
+    return;
+  }
+  const int32_t iV8Absent = 64;
+  info.GetReturnValue().Set(iV8Absent);
+}
+
+void NamedPropertyDeleterCallback(
+    v8::Local<v8::Name> property,
+    const v8::PropertyCallbackInfo<v8::Boolean>& info) {
+  v8::Local<v8::Object> thisObject = info.This();
+  const FXJSE_CLASS_DESCRIPTOR* lpClass = static_cast<FXJSE_CLASS_DESCRIPTOR*>(
+      info.Data().As<v8::External>()->Value());
+  v8::Isolate* pIsolate = info.GetIsolate();
+  v8::HandleScope scope(pIsolate);
+  v8::String::Utf8Value szPropName(property);
+  CFX_ByteStringC szFxPropName(*szPropName, szPropName.length());
+  std::unique_ptr<CFXJSE_Value> lpThisValue(
+      new CFXJSE_Value(info.GetIsolate()));
+  lpThisValue->ForceSetValue(thisObject);
+  info.GetReturnValue().Set(
+      !!DynPropDeleterAdapter(lpClass, lpThisValue.get(), szFxPropName));
+}
+
+void NamedPropertyGetterCallback(
+    v8::Local<v8::Name> property,
+    const v8::PropertyCallbackInfo<v8::Value>& info) {
+  v8::Local<v8::Object> thisObject = info.This();
+  const FXJSE_CLASS_DESCRIPTOR* lpClass = static_cast<FXJSE_CLASS_DESCRIPTOR*>(
+      info.Data().As<v8::External>()->Value());
+  v8::String::Utf8Value szPropName(property);
+  CFX_ByteStringC szFxPropName(*szPropName, szPropName.length());
+  std::unique_ptr<CFXJSE_Value> lpThisValue(
+      new CFXJSE_Value(info.GetIsolate()));
+  lpThisValue->ForceSetValue(thisObject);
+  std::unique_ptr<CFXJSE_Value> lpNewValue(new CFXJSE_Value(info.GetIsolate()));
+  DynPropGetterAdapter(lpClass, lpThisValue.get(), szFxPropName,
+                       lpNewValue.get());
+  info.GetReturnValue().Set(lpNewValue->DirectGetValue());
+}
+
+void NamedPropertySetterCallback(
+    v8::Local<v8::Name> property,
+    v8::Local<v8::Value> value,
+    const v8::PropertyCallbackInfo<v8::Value>& info) {
+  v8::Local<v8::Object> thisObject = info.This();
+  const FXJSE_CLASS_DESCRIPTOR* lpClass = static_cast<FXJSE_CLASS_DESCRIPTOR*>(
+      info.Data().As<v8::External>()->Value());
+  v8::String::Utf8Value szPropName(property);
+  CFX_ByteStringC szFxPropName(*szPropName, szPropName.length());
+  std::unique_ptr<CFXJSE_Value> lpThisValue(
+      new CFXJSE_Value(info.GetIsolate()));
+  lpThisValue->ForceSetValue(thisObject);
+
+  CFXJSE_Value* lpNewValue = new CFXJSE_Value(info.GetIsolate());
+  lpNewValue->ForceSetValue(value);
+  DynPropSetterAdapter(lpClass, lpThisValue.get(), szFxPropName, lpNewValue);
+  info.GetReturnValue().Set(value);
+}
+
+void NamedPropertyEnumeratorCallback(
+    const v8::PropertyCallbackInfo<v8::Array>& info) {
+  const FXJSE_CLASS_DESCRIPTOR* lpClass = static_cast<FXJSE_CLASS_DESCRIPTOR*>(
+      info.Data().As<v8::External>()->Value());
+  v8::Isolate* pIsolate = info.GetIsolate();
+  v8::Local<v8::Array> newArray = v8::Array::New(pIsolate, lpClass->propNum);
+  for (int i = 0; i < lpClass->propNum; i++) {
+    newArray->Set(
+        i, v8::String::NewFromUtf8(pIsolate, lpClass->properties[i].name));
+  }
+  info.GetReturnValue().Set(newArray);
+}
+
+}  // namespace
+
+// static
+CFXJSE_Class* CFXJSE_Class::Create(
+    CFXJSE_Context* lpContext,
+    const FXJSE_CLASS_DESCRIPTOR* lpClassDefinition,
+    FX_BOOL bIsJSGlobal) {
+  if (!lpContext || !lpClassDefinition)
+    return nullptr;
+
+  CFXJSE_Class* pClass =
+      GetClassFromContext(lpContext, lpClassDefinition->name);
+  if (pClass)
+    return pClass;
+
+  v8::Isolate* pIsolate = lpContext->m_pIsolate;
+  pClass = new CFXJSE_Class(lpContext);
+  pClass->m_szClassName = lpClassDefinition->name;
+  pClass->m_lpClassDefinition = lpClassDefinition;
+  CFXJSE_ScopeUtil_IsolateHandleRootContext scope(pIsolate);
+  v8::Local<v8::FunctionTemplate> hFunctionTemplate = v8::FunctionTemplate::New(
+      pIsolate, bIsJSGlobal ? 0 : V8ConstructorCallback_Wrapper,
+      v8::External::New(
+          pIsolate, const_cast<FXJSE_CLASS_DESCRIPTOR*>(lpClassDefinition)));
+  hFunctionTemplate->SetClassName(
+      v8::String::NewFromUtf8(pIsolate, lpClassDefinition->name));
+  hFunctionTemplate->InstanceTemplate()->SetInternalFieldCount(1);
+  v8::Local<v8::ObjectTemplate> hObjectTemplate =
+      hFunctionTemplate->InstanceTemplate();
+  SetUpNamedPropHandler(pIsolate, hObjectTemplate, lpClassDefinition);
+
+  if (lpClassDefinition->propNum) {
+    for (int32_t i = 0; i < lpClassDefinition->propNum; i++) {
+      hObjectTemplate->SetNativeDataProperty(
+          v8::String::NewFromUtf8(pIsolate,
+                                  lpClassDefinition->properties[i].name),
+          lpClassDefinition->properties[i].getProc ? V8GetterCallback_Wrapper
+                                                   : nullptr,
+          lpClassDefinition->properties[i].setProc ? V8SetterCallback_Wrapper
+                                                   : nullptr,
+          v8::External::New(pIsolate, const_cast<FXJSE_PROPERTY_DESCRIPTOR*>(
+                                          lpClassDefinition->properties + i)),
+          static_cast<v8::PropertyAttribute>(v8::DontDelete));
+    }
+  }
+  if (lpClassDefinition->methNum) {
+    for (int32_t i = 0; i < lpClassDefinition->methNum; i++) {
+      v8::Local<v8::FunctionTemplate> fun = v8::FunctionTemplate::New(
+          pIsolate, V8FunctionCallback_Wrapper,
+          v8::External::New(pIsolate, const_cast<FXJSE_FUNCTION_DESCRIPTOR*>(
+                                          lpClassDefinition->methods + i)));
+      fun->RemovePrototype();
+      hObjectTemplate->Set(
+          v8::String::NewFromUtf8(pIsolate, lpClassDefinition->methods[i].name),
+          fun,
+          static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete));
+    }
+  }
+  if (lpClassDefinition->constructor) {
+    if (bIsJSGlobal) {
+      hObjectTemplate->Set(
+          v8::String::NewFromUtf8(pIsolate, lpClassDefinition->name),
+          v8::FunctionTemplate::New(
+              pIsolate, V8ClassGlobalConstructorCallback_Wrapper,
+              v8::External::New(pIsolate, const_cast<FXJSE_CLASS_DESCRIPTOR*>(
+                                              lpClassDefinition))),
+          static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete));
+    } else {
+      v8::Local<v8::Context> hLocalContext =
+          v8::Local<v8::Context>::New(pIsolate, lpContext->m_hContext);
+      FXJSE_GetGlobalObjectFromContext(hLocalContext)
+          ->Set(v8::String::NewFromUtf8(pIsolate, lpClassDefinition->name),
+                v8::Function::New(
+                    pIsolate, V8ClassGlobalConstructorCallback_Wrapper,
+                    v8::External::New(pIsolate,
+                                      const_cast<FXJSE_CLASS_DESCRIPTOR*>(
+                                          lpClassDefinition))));
+    }
+  }
+  if (bIsJSGlobal) {
+    v8::Local<v8::FunctionTemplate> fun = v8::FunctionTemplate::New(
+        pIsolate, Context_GlobalObjToString,
+        v8::External::New(
+            pIsolate, const_cast<FXJSE_CLASS_DESCRIPTOR*>(lpClassDefinition)));
+    fun->RemovePrototype();
+    hObjectTemplate->Set(v8::String::NewFromUtf8(pIsolate, "toString"), fun);
+  }
+  pClass->m_hTemplate.Reset(lpContext->m_pIsolate, hFunctionTemplate);
+  lpContext->m_rgClasses.push_back(std::unique_ptr<CFXJSE_Class>(pClass));
+  return pClass;
+}
+
+// static
+CFXJSE_Class* CFXJSE_Class::GetClassFromContext(CFXJSE_Context* pContext,
+                                                const CFX_ByteStringC& szName) {
+  for (const auto& pClass : pContext->m_rgClasses) {
+    if (pClass->m_szClassName == szName)
+      return pClass.get();
+  }
+  return nullptr;
+}
+
+// static
+void CFXJSE_Class::SetUpNamedPropHandler(
+    v8::Isolate* pIsolate,
+    v8::Local<v8::ObjectTemplate>& hObjectTemplate,
+    const FXJSE_CLASS_DESCRIPTOR* lpClassDefinition) {
+  v8::NamedPropertyHandlerConfiguration configuration(
+      lpClassDefinition->dynPropGetter ? NamedPropertyGetterCallback : 0,
+      lpClassDefinition->dynPropSetter ? NamedPropertySetterCallback : 0,
+      lpClassDefinition->dynPropTypeGetter ? NamedPropertyQueryCallback : 0,
+      lpClassDefinition->dynPropDeleter ? NamedPropertyDeleterCallback : 0,
+      NamedPropertyEnumeratorCallback,
+      v8::External::New(pIsolate,
+                        const_cast<FXJSE_CLASS_DESCRIPTOR*>(lpClassDefinition)),
+      v8::PropertyHandlerFlags::kNonMasking);
+  hObjectTemplate->SetHandler(configuration);
+}
+
+CFXJSE_Class::CFXJSE_Class(CFXJSE_Context* lpContext)
+    : m_lpClassDefinition(nullptr), m_pContext(lpContext) {}
+
+CFXJSE_Class::~CFXJSE_Class() {}