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, 255 insertions, 0 deletions

diff --git a/fxjs/cfxjse_context.cpp b/fxjs/cfxjse_context.cpp
new file mode 100644
index 0000000000..4b0d0f67f7
--- /dev/null
+++ b/fxjs/cfxjse_context.cpp
@@ -0,0 +1,255 @@
+// 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_context.h"
+
+#include "fxjs/include/cfxjse_class.h"
+#include "fxjs/include/cfxjse_value.h"
+
+namespace {
+
+const FX_CHAR szCompatibleModeScript[] =
+    "(function(global, list) {\n"
+    "  'use strict';\n"
+    "  var objname;\n"
+    "  for (objname in list) {\n"
+    "    var globalobj = global[objname];\n"
+    "    if (globalobj) {\n"
+    "      list[objname].forEach(function(name) {\n"
+    "        if (!globalobj[name]) {\n"
+    "          Object.defineProperty(globalobj, name, {\n"
+    "            writable: true,\n"
+    "            enumerable: false,\n"
+    "            value: (function(obj) {\n"
+    "              if (arguments.length === 0) {\n"
+    "                throw new TypeError('missing argument 0 when calling "
+    "                    function ' + objname + '.' + name);\n"
+    "              }\n"
+    "              return globalobj.prototype[name].apply(obj, "
+    "                  Array.prototype.slice.call(arguments, 1));\n"
+    "            })\n"
+    "          });\n"
+    "        }\n"
+    "      });\n"
+    "    }\n"
+    "  }\n"
+    "}(this, {String: ['substr', 'toUpperCase']}));";
+
+}  // namespace
+
+// Note, not in the anonymous namespace due to the friend call
+// in cfxjse_context.h
+// TODO(dsinclair): Remove the friending, use public methods.
+class CFXJSE_ScopeUtil_IsolateHandleContext {
+ public:
+  explicit CFXJSE_ScopeUtil_IsolateHandleContext(CFXJSE_Context* pContext)
+      : m_context(pContext),
+        m_parent(pContext->m_pIsolate),
+        m_cscope(v8::Local<v8::Context>::New(pContext->m_pIsolate,
+                                             pContext->m_hContext)) {}
+  v8::Isolate* GetIsolate() { return m_context->m_pIsolate; }
+  v8::Local<v8::Context> GetLocalContext() {
+    return v8::Local<v8::Context>::New(m_context->m_pIsolate,
+                                       m_context->m_hContext);
+  }
+
+ private:
+  CFXJSE_ScopeUtil_IsolateHandleContext(
+      const CFXJSE_ScopeUtil_IsolateHandleContext&) = delete;
+  void operator=(const CFXJSE_ScopeUtil_IsolateHandleContext&) = delete;
+  void* operator new(size_t size) = delete;
+  void operator delete(void*, size_t) = delete;
+
+  CFXJSE_Context* m_context;
+  CFXJSE_ScopeUtil_IsolateHandle m_parent;
+  v8::Context::Scope m_cscope;
+};
+
+v8::Local<v8::Object> FXJSE_GetGlobalObjectFromContext(
+    const v8::Local<v8::Context>& hContext) {
+  return hContext->Global()->GetPrototype().As<v8::Object>();
+}
+
+void FXJSE_UpdateObjectBinding(v8::Local<v8::Object>& hObject,
+                               CFXJSE_HostObject* lpNewBinding) {
+  ASSERT(!hObject.IsEmpty());
+  ASSERT(hObject->InternalFieldCount() > 0);
+  hObject->SetAlignedPointerInInternalField(0,
+                                            static_cast<void*>(lpNewBinding));
+}
+
+CFXJSE_HostObject* FXJSE_RetrieveObjectBinding(
+    const v8::Local<v8::Object>& hJSObject,
+    CFXJSE_Class* lpClass) {
+  ASSERT(!hJSObject.IsEmpty());
+  if (!hJSObject->IsObject())
+    return nullptr;
+
+  v8::Local<v8::Object> hObject = hJSObject;
+  if (hObject->InternalFieldCount() == 0) {
+    v8::Local<v8::Value> hProtoObject = hObject->GetPrototype();
+    if (hProtoObject.IsEmpty() || !hProtoObject->IsObject())
+      return nullptr;
+
+    hObject = hProtoObject.As<v8::Object>();
+    if (hObject->InternalFieldCount() == 0)
+      return nullptr;
+  }
+  if (lpClass) {
+    v8::Local<v8::FunctionTemplate> hClass =
+        v8::Local<v8::FunctionTemplate>::New(
+            lpClass->GetContext()->GetRuntime(), lpClass->GetTemplate());
+    if (!hClass->HasInstance(hObject))
+      return nullptr;
+  }
+  return static_cast<CFXJSE_HostObject*>(
+      hObject->GetAlignedPointerFromInternalField(0));
+}
+
+v8::Local<v8::Object> FXJSE_CreateReturnValue(v8::Isolate* pIsolate,
+                                              v8::TryCatch& trycatch) {
+  v8::Local<v8::Object> hReturnValue = v8::Object::New(pIsolate);
+  if (trycatch.HasCaught()) {
+    v8::Local<v8::Value> hException = trycatch.Exception();
+    v8::Local<v8::Message> hMessage = trycatch.Message();
+    if (hException->IsObject()) {
+      v8::Local<v8::Value> hValue;
+      hValue = hException.As<v8::Object>()->Get(
+          v8::String::NewFromUtf8(pIsolate, "name"));
+      if (hValue->IsString() || hValue->IsStringObject())
+        hReturnValue->Set(0, hValue);
+      else
+        hReturnValue->Set(0, v8::String::NewFromUtf8(pIsolate, "Error"));
+
+      hValue = hException.As<v8::Object>()->Get(
+          v8::String::NewFromUtf8(pIsolate, "message"));
+      if (hValue->IsString() || hValue->IsStringObject())
+        hReturnValue->Set(1, hValue);
+      else
+        hReturnValue->Set(1, hMessage->Get());
+    } else {
+      hReturnValue->Set(0, v8::String::NewFromUtf8(pIsolate, "Error"));
+      hReturnValue->Set(1, hMessage->Get());
+    }
+    hReturnValue->Set(2, hException);
+    hReturnValue->Set(3, v8::Integer::New(pIsolate, hMessage->GetLineNumber()));
+    hReturnValue->Set(4, hMessage->GetSourceLine());
+    v8::Maybe<int32_t> maybe_int =
+        hMessage->GetStartColumn(pIsolate->GetCurrentContext());
+    hReturnValue->Set(5, v8::Integer::New(pIsolate, maybe_int.FromMaybe(0)));
+    maybe_int = hMessage->GetEndColumn(pIsolate->GetCurrentContext());
+    hReturnValue->Set(6, v8::Integer::New(pIsolate, maybe_int.FromMaybe(0)));
+  }
+  return hReturnValue;
+}
+
+// static
+CFXJSE_Context* CFXJSE_Context::Create(
+    v8::Isolate* pIsolate,
+    const FXJSE_CLASS_DESCRIPTOR* lpGlobalClass,
+    CFXJSE_HostObject* lpGlobalObject) {
+  CFXJSE_ScopeUtil_IsolateHandle scope(pIsolate);
+  CFXJSE_Context* pContext = new CFXJSE_Context(pIsolate);
+  CFXJSE_Class* lpGlobalClassObj = nullptr;
+  v8::Local<v8::ObjectTemplate> hObjectTemplate;
+  if (lpGlobalClass) {
+    lpGlobalClassObj = CFXJSE_Class::Create(pContext, lpGlobalClass, TRUE);
+    ASSERT(lpGlobalClassObj);
+    v8::Local<v8::FunctionTemplate> hFunctionTemplate =
+        v8::Local<v8::FunctionTemplate>::New(pIsolate,
+                                             lpGlobalClassObj->m_hTemplate);
+    hObjectTemplate = hFunctionTemplate->InstanceTemplate();
+  } else {
+    hObjectTemplate = v8::ObjectTemplate::New(pIsolate);
+    hObjectTemplate->SetInternalFieldCount(1);
+  }
+  hObjectTemplate->Set(
+      v8::Symbol::GetToStringTag(pIsolate),
+      v8::String::NewFromUtf8(pIsolate, "global", v8::NewStringType::kNormal)
+          .ToLocalChecked());
+  v8::Local<v8::Context> hNewContext =
+      v8::Context::New(pIsolate, nullptr, hObjectTemplate);
+  v8::Local<v8::Context> hRootContext = v8::Local<v8::Context>::New(
+      pIsolate, CFXJSE_RuntimeData::Get(pIsolate)->m_hRootContext);
+  hNewContext->SetSecurityToken(hRootContext->GetSecurityToken());
+  v8::Local<v8::Object> hGlobalObject =
+      FXJSE_GetGlobalObjectFromContext(hNewContext);
+  FXJSE_UpdateObjectBinding(hGlobalObject, lpGlobalObject);
+  pContext->m_hContext.Reset(pIsolate, hNewContext);
+  return pContext;
+}
+
+CFXJSE_Context::CFXJSE_Context(v8::Isolate* pIsolate) : m_pIsolate(pIsolate) {}
+
+CFXJSE_Context::~CFXJSE_Context() {}
+
+std::unique_ptr<CFXJSE_Value> CFXJSE_Context::GetGlobalObject() {
+  std::unique_ptr<CFXJSE_Value> pValue(new CFXJSE_Value(m_pIsolate));
+
+  CFXJSE_ScopeUtil_IsolateHandleContext scope(this);
+  v8::Local<v8::Context> hContext =
+      v8::Local<v8::Context>::New(m_pIsolate, m_hContext);
+  v8::Local<v8::Object> hGlobalObject = hContext->Global();
+  pValue->ForceSetValue(hGlobalObject);
+
+  return pValue;
+}
+
+void CFXJSE_Context::EnableCompatibleMode() {
+  ExecuteScript(szCompatibleModeScript, nullptr, nullptr);
+}
+
+FX_BOOL CFXJSE_Context::ExecuteScript(const FX_CHAR* szScript,
+                                      CFXJSE_Value* lpRetValue,
+                                      CFXJSE_Value* lpNewThisObject) {
+  CFXJSE_ScopeUtil_IsolateHandleContext scope(this);
+  v8::TryCatch trycatch(m_pIsolate);
+  v8::Local<v8::String> hScriptString =
+      v8::String::NewFromUtf8(m_pIsolate, szScript);
+  if (!lpNewThisObject) {
+    v8::Local<v8::Script> hScript = v8::Script::Compile(hScriptString);
+    if (!trycatch.HasCaught()) {
+      v8::Local<v8::Value> hValue = hScript->Run();
+      if (!trycatch.HasCaught()) {
+        if (lpRetValue) {
+          lpRetValue->m_hValue.Reset(m_pIsolate, hValue);
+        }
+        return TRUE;
+      }
+    }
+    if (lpRetValue) {
+      lpRetValue->m_hValue.Reset(m_pIsolate,
+                                 FXJSE_CreateReturnValue(m_pIsolate, trycatch));
+    }
+    return FALSE;
+  } else {
+    v8::Local<v8::Value> hNewThis =
+        v8::Local<v8::Value>::New(m_pIsolate, lpNewThisObject->m_hValue);
+    ASSERT(!hNewThis.IsEmpty());
+    v8::Local<v8::Script> hWrapper =
+        v8::Script::Compile(v8::String::NewFromUtf8(
+            m_pIsolate, "(function () { return eval(arguments[0]); })"));
+    v8::Local<v8::Value> hWrapperValue = hWrapper->Run();
+    ASSERT(hWrapperValue->IsFunction());
+    v8::Local<v8::Function> hWrapperFn = hWrapperValue.As<v8::Function>();
+    if (!trycatch.HasCaught()) {
+      v8::Local<v8::Value> rgArgs[] = {hScriptString};
+      v8::Local<v8::Value> hValue =
+          hWrapperFn->Call(hNewThis.As<v8::Object>(), 1, rgArgs);
+      if (!trycatch.HasCaught()) {
+        if (lpRetValue) {
+          lpRetValue->m_hValue.Reset(m_pIsolate, hValue);
+        }
+        return TRUE;
+      }
+    }
+    if (lpRetValue) {
+      lpRetValue->m_hValue.Reset(m_pIsolate,
+                                 FXJSE_CreateReturnValue(m_pIsolate, trycatch));
+    }
+    return FALSE;
+  }
+}