Move xfa/fxjse/ to fxjse/

This makes it clear that fxjse/ is a standalone component and should not be
entangled with other xfa/ components.

BUG=pdfium:506

Review-Url: https://codereview.chromium.org/2056663004

4 files changed, 440 insertions, 0 deletions

diff --git a/fxjse/include/cfxjse_arguments.h b/fxjse/include/cfxjse_arguments.h
new file mode 100644
index 0000000000..0f9bddaa87
--- /dev/null
+++ b/fxjse/include/cfxjse_arguments.h
@@ -0,0 +1,38 @@
+// 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
+
+#ifndef FXJSE_INCLUDE_CFXJSE_ARGUMENTS_H_
+#define FXJSE_INCLUDE_CFXJSE_ARGUMENTS_H_
+
+#include <memory>
+
+#include "fxjse/include/fxjse.h"
+
+class CFXJSE_Class;
+
+class CFXJSE_Arguments {
+ public:
+  CFXJSE_Arguments(const v8::FunctionCallbackInfo<v8::Value>* pInfo,
+                   CFXJSE_Value* pRetValue)
+      : m_pInfo(pInfo), m_pRetValue(pRetValue) {}
+
+  v8::Isolate* GetRuntime() const;
+  int32_t GetLength() const;
+  std::unique_ptr<CFXJSE_Value> GetValue(int32_t index) const;
+  FX_BOOL GetBoolean(int32_t index) const;
+  int32_t GetInt32(int32_t index) const;
+  FX_FLOAT GetFloat(int32_t index) const;
+  CFX_ByteString GetUTF8String(int32_t index) const;
+  CFXJSE_HostObject* GetObject(int32_t index,
+                               CFXJSE_Class* pClass = nullptr) const;
+  CFXJSE_Value* GetReturnValue();
+
+ private:
+  const v8::FunctionCallbackInfo<v8::Value>* m_pInfo;
+  CFXJSE_Value* m_pRetValue;
+};
+
+#endif  // FXJSE_INCLUDE_CFXJSE_ARGUMENTS_H_
diff --git a/fxjse/include/cfxjse_class.h b/fxjse/include/cfxjse_class.h
new file mode 100644
index 0000000000..bb1db6d48c
--- /dev/null
+++ b/fxjse/include/cfxjse_class.h
@@ -0,0 +1,44 @@
+// Copyright 2014 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
+
+#ifndef FXJSE_INCLUDE_CFXJSE_CLASS_H_
+#define FXJSE_INCLUDE_CFXJSE_CLASS_H_
+
+#include "fxjse/include/cfxjse_arguments.h"
+#include "fxjse/include/fxjse.h"
+#include "v8/include/v8.h"
+
+class CFXJSE_Context;
+class CFXJSE_Value;
+
+class CFXJSE_Class {
+ public:
+  static CFXJSE_Class* Create(CFXJSE_Context* pContext,
+                              const FXJSE_CLASS_DESCRIPTOR* lpClassDefintion,
+                              FX_BOOL bIsJSGlobal = FALSE);
+  static CFXJSE_Class* GetClassFromContext(CFXJSE_Context* pContext,
+                                           const CFX_ByteStringC& szName);
+  static void SetUpNamedPropHandler(
+      v8::Isolate* pIsolate,
+      v8::Local<v8::ObjectTemplate>& hObjectTemplate,
+      const FXJSE_CLASS_DESCRIPTOR* lpClassDefinition);
+
+  CFXJSE_Context* GetContext() { return m_pContext; }
+  v8::Global<v8::FunctionTemplate>& GetTemplate() { return m_hTemplate; }
+
+ protected:
+  explicit CFXJSE_Class(CFXJSE_Context* lpContext)
+      : m_lpClassDefinition(nullptr), m_pContext(lpContext) {}
+
+  CFX_ByteString m_szClassName;
+  const FXJSE_CLASS_DESCRIPTOR* m_lpClassDefinition;
+  CFXJSE_Context* m_pContext;
+  v8::Global<v8::FunctionTemplate> m_hTemplate;
+  friend class CFXJSE_Context;
+  friend class CFXJSE_Value;
+};
+
+#endif  // FXJSE_INCLUDE_CFXJSE_CLASS_H_
diff --git a/fxjse/include/cfxjse_value.h b/fxjse/include/cfxjse_value.h
new file mode 100644
index 0000000000..e01f64cfff
--- /dev/null
+++ b/fxjse/include/cfxjse_value.h
@@ -0,0 +1,284 @@
+// Copyright 2014 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
+
+#ifndef FXJSE_INCLUDE_CFXJSE_VALUE_H_
+#define FXJSE_INCLUDE_CFXJSE_VALUE_H_
+
+#include "fxjse/scope_inline.h"
+
+V8_INLINE static double FXJSE_ftod(FX_FLOAT fNumber) {
+  if (sizeof(FX_FLOAT) != 4) {
+    ASSERT(FALSE);
+    return fNumber;
+  }
+
+  uint32_t nFloatBits = (uint32_t&)fNumber;
+  uint8_t nExponent = (uint8_t)(nFloatBits >> 16 >> 7);
+  if (nExponent == 0 || nExponent == 255)
+    return fNumber;
+
+  int8_t nErrExp = nExponent - 127 - 23;
+  if (nErrExp >= 0)
+    return fNumber;
+
+  double dwError = pow(2.0, nErrExp), dwErrorHalf = dwError / 2;
+  double dNumber = fNumber, dNumberAbs = fabs(fNumber);
+  double dNumberAbsMin = dNumberAbs - dwErrorHalf,
+         dNumberAbsMax = dNumberAbs + dwErrorHalf;
+  int32_t iErrPos = 0;
+  if (floor(dNumberAbsMin) == floor(dNumberAbsMax)) {
+    dNumberAbsMin = fmod(dNumberAbsMin, 1.0);
+    dNumberAbsMax = fmod(dNumberAbsMax, 1.0);
+    int32_t iErrPosMin = 1, iErrPosMax = 38;
+    do {
+      int32_t iMid = (iErrPosMin + iErrPosMax) / 2;
+      double dPow = pow(10.0, iMid);
+      if (floor(dNumberAbsMin * dPow) == floor(dNumberAbsMax * dPow)) {
+        iErrPosMin = iMid + 1;
+      } else {
+        iErrPosMax = iMid;
+      }
+    } while (iErrPosMin < iErrPosMax);
+    iErrPos = iErrPosMax;
+  }
+  double dPow = pow(10.0, iErrPos);
+  return fNumber < 0 ? ceil(dNumber * dPow - 0.5) / dPow
+                     : floor(dNumber * dPow + 0.5) / dPow;
+}
+
+class CFXJSE_Value {
+ public:
+  CFXJSE_Value(v8::Isolate* pIsolate) : m_pIsolate(pIsolate) {}
+
+  V8_INLINE FX_BOOL IsUndefined() const {
+    if (m_hValue.IsEmpty()) {
+      return FALSE;
+    }
+    CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate);
+    v8::Local<v8::Value> hValue =
+        v8::Local<v8::Value>::New(m_pIsolate, m_hValue);
+    return hValue->IsUndefined();
+  }
+  V8_INLINE FX_BOOL IsNull() const {
+    if (m_hValue.IsEmpty()) {
+      return FALSE;
+    }
+    CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate);
+    v8::Local<v8::Value> hValue =
+        v8::Local<v8::Value>::New(m_pIsolate, m_hValue);
+    return hValue->IsNull();
+  }
+  V8_INLINE FX_BOOL IsBoolean() const {
+    if (m_hValue.IsEmpty()) {
+      return FALSE;
+    }
+    CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate);
+    v8::Local<v8::Value> hValue =
+        v8::Local<v8::Value>::New(m_pIsolate, m_hValue);
+    return hValue->IsBoolean();
+  }
+  V8_INLINE FX_BOOL IsString() const {
+    if (m_hValue.IsEmpty()) {
+      return FALSE;
+    }
+    CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate);
+    v8::Local<v8::Value> hValue =
+        v8::Local<v8::Value>::New(m_pIsolate, m_hValue);
+    return hValue->IsString();
+  }
+  V8_INLINE FX_BOOL IsNumber() const {
+    if (m_hValue.IsEmpty()) {
+      return FALSE;
+    }
+    CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate);
+    v8::Local<v8::Value> hValue =
+        v8::Local<v8::Value>::New(m_pIsolate, m_hValue);
+    return hValue->IsNumber();
+  }
+  V8_INLINE FX_BOOL IsInteger() const {
+    if (m_hValue.IsEmpty()) {
+      return FALSE;
+    }
+    CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate);
+    v8::Local<v8::Value> hValue =
+        v8::Local<v8::Value>::New(m_pIsolate, m_hValue);
+    return hValue->IsInt32();
+  }
+  V8_INLINE FX_BOOL IsObject() const {
+    if (m_hValue.IsEmpty()) {
+      return FALSE;
+    }
+    CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate);
+    v8::Local<v8::Value> hValue =
+        v8::Local<v8::Value>::New(m_pIsolate, m_hValue);
+    return hValue->IsObject();
+  }
+  V8_INLINE FX_BOOL IsArray() const {
+    if (m_hValue.IsEmpty()) {
+      return FALSE;
+    }
+    CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate);
+    v8::Local<v8::Value> hValue =
+        v8::Local<v8::Value>::New(m_pIsolate, m_hValue);
+    return hValue->IsArray();
+  }
+  V8_INLINE FX_BOOL IsFunction() const {
+    if (m_hValue.IsEmpty()) {
+      return FALSE;
+    }
+    CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate);
+    v8::Local<v8::Value> hValue =
+        v8::Local<v8::Value>::New(m_pIsolate, m_hValue);
+    return hValue->IsFunction();
+  }
+  V8_INLINE FX_BOOL IsDate() const {
+    if (m_hValue.IsEmpty()) {
+      return FALSE;
+    }
+    CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate);
+    v8::Local<v8::Value> hValue =
+        v8::Local<v8::Value>::New(m_pIsolate, m_hValue);
+    return hValue->IsDate();
+  }
+
+  V8_INLINE FX_BOOL ToBoolean() const {
+    ASSERT(!m_hValue.IsEmpty());
+    CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate);
+    v8::Local<v8::Value> hValue =
+        v8::Local<v8::Value>::New(m_pIsolate, m_hValue);
+    return static_cast<FX_BOOL>(hValue->BooleanValue());
+  }
+  V8_INLINE FX_FLOAT ToFloat() const {
+    ASSERT(!m_hValue.IsEmpty());
+    CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate);
+    v8::Local<v8::Value> hValue =
+        v8::Local<v8::Value>::New(m_pIsolate, m_hValue);
+    return static_cast<FX_FLOAT>(hValue->NumberValue());
+  }
+  V8_INLINE double ToDouble() const {
+    ASSERT(!m_hValue.IsEmpty());
+    CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate);
+    v8::Local<v8::Value> hValue =
+        v8::Local<v8::Value>::New(m_pIsolate, m_hValue);
+    return static_cast<double>(hValue->NumberValue());
+  }
+  V8_INLINE int32_t ToInteger() const {
+    ASSERT(!m_hValue.IsEmpty());
+    CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate);
+    v8::Local<v8::Value> hValue =
+        v8::Local<v8::Value>::New(m_pIsolate, m_hValue);
+    return static_cast<int32_t>(hValue->NumberValue());
+  }
+  V8_INLINE CFX_ByteString ToString() const {
+    ASSERT(!m_hValue.IsEmpty());
+    CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate);
+    v8::Local<v8::Value> hValue =
+        v8::Local<v8::Value>::New(m_pIsolate, m_hValue);
+    v8::Local<v8::String> hString = hValue->ToString();
+    v8::String::Utf8Value hStringVal(hString);
+    return CFX_ByteString(*hStringVal);
+  }
+  V8_INLINE CFX_WideString ToWideString() const {
+    return CFX_WideString::FromUTF8(ToString().AsStringC());
+  }
+  CFXJSE_HostObject* ToHostObject(CFXJSE_Class* lpClass) const;
+
+  V8_INLINE void SetUndefined() {
+    CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate);
+    v8::Local<v8::Value> hValue = v8::Undefined(m_pIsolate);
+    m_hValue.Reset(m_pIsolate, hValue);
+  }
+  V8_INLINE void SetNull() {
+    CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate);
+    v8::Local<v8::Value> hValue = v8::Null(m_pIsolate);
+    m_hValue.Reset(m_pIsolate, hValue);
+  }
+  V8_INLINE void SetBoolean(FX_BOOL bBoolean) {
+    CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate);
+    v8::Local<v8::Value> hValue =
+        v8::Boolean::New(m_pIsolate, bBoolean != FALSE);
+    m_hValue.Reset(m_pIsolate, hValue);
+  }
+  V8_INLINE void SetInteger(int32_t nInteger) {
+    CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate);
+    v8::Local<v8::Value> hValue = v8::Integer::New(m_pIsolate, nInteger);
+    m_hValue.Reset(m_pIsolate, hValue);
+  }
+  V8_INLINE void SetDouble(double dDouble) {
+    CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate);
+    v8::Local<v8::Value> hValue = v8::Number::New(m_pIsolate, dDouble);
+    m_hValue.Reset(m_pIsolate, hValue);
+  }
+  V8_INLINE void SetString(const CFX_ByteStringC& szString) {
+    CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate);
+    v8::Local<v8::Value> hValue = v8::String::NewFromUtf8(
+        m_pIsolate, reinterpret_cast<const char*>(szString.raw_str()),
+        v8::String::kNormalString, szString.GetLength());
+    m_hValue.Reset(m_pIsolate, hValue);
+  }
+  V8_INLINE void SetFloat(FX_FLOAT fFloat) {
+    CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate);
+    v8::Local<v8::Value> pValue =
+        v8::Number::New(m_pIsolate, FXJSE_ftod(fFloat));
+    m_hValue.Reset(m_pIsolate, pValue);
+  }
+  V8_INLINE void SetJSObject() {
+    CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate);
+    v8::Local<v8::Value> hValue = v8::Object::New(m_pIsolate);
+    m_hValue.Reset(m_pIsolate, hValue);
+  }
+
+  void SetObject(CFXJSE_HostObject* lpObject, CFXJSE_Class* pClass);
+  void SetHostObject(CFXJSE_HostObject* lpObject, CFXJSE_Class* lpClass);
+  void SetArray(uint32_t uValueCount, CFXJSE_Value** rgValues);
+  void SetDate(double dDouble);
+
+  FX_BOOL GetObjectProperty(const CFX_ByteStringC& szPropName,
+                            CFXJSE_Value* lpPropValue);
+  FX_BOOL SetObjectProperty(const CFX_ByteStringC& szPropName,
+                            CFXJSE_Value* lpPropValue);
+  FX_BOOL GetObjectPropertyByIdx(uint32_t uPropIdx, CFXJSE_Value* lpPropValue);
+  FX_BOOL SetObjectProperty(uint32_t uPropIdx, CFXJSE_Value* lpPropValue);
+  FX_BOOL DeleteObjectProperty(const CFX_ByteStringC& szPropName);
+  FX_BOOL HasObjectOwnProperty(const CFX_ByteStringC& szPropName,
+                               FX_BOOL bUseTypeGetter);
+  FX_BOOL SetObjectOwnProperty(const CFX_ByteStringC& szPropName,
+                               CFXJSE_Value* lpPropValue);
+  FX_BOOL SetFunctionBind(CFXJSE_Value* lpOldFunction, CFXJSE_Value* lpNewThis);
+  FX_BOOL Call(CFXJSE_Value* lpReceiver,
+               CFXJSE_Value* lpRetValue,
+               uint32_t nArgCount,
+               CFXJSE_Value** lpArgs);
+
+  V8_INLINE v8::Isolate* GetIsolate() const { return m_pIsolate; }
+  V8_INLINE const v8::Global<v8::Value>& DirectGetValue() const {
+    return m_hValue;
+  }
+  V8_INLINE void ForceSetValue(v8::Local<v8::Value> hValue) {
+    m_hValue.Reset(m_pIsolate, hValue);
+  }
+  V8_INLINE void Assign(const CFXJSE_Value* lpValue) {
+    ASSERT(lpValue);
+    if (lpValue) {
+      m_hValue.Reset(m_pIsolate, lpValue->m_hValue);
+    } else {
+      m_hValue.Reset();
+    }
+  }
+
+ private:
+  friend class CFXJSE_Class;
+  friend class CFXJSE_Context;
+
+  CFXJSE_Value();
+  CFXJSE_Value(const CFXJSE_Value&);
+  CFXJSE_Value& operator=(const CFXJSE_Value&);
+
+  v8::Isolate* m_pIsolate;
+  v8::Global<v8::Value> m_hValue;
+};
+
+#endif  // FXJSE_INCLUDE_CFXJSE_VALUE_H_
diff --git a/fxjse/include/fxjse.h b/fxjse/include/fxjse.h
new file mode 100644
index 0000000000..f9d6a67e02
--- /dev/null
+++ b/fxjse/include/fxjse.h
@@ -0,0 +1,74 @@
+// Copyright 2014 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
+
+#ifndef FXJSE_INCLUDE_FXJSE_H_
+#define FXJSE_INCLUDE_FXJSE_H_
+
+#include "core/fxcrt/include/fx_string.h"
+#include "core/fxcrt/include/fx_system.h"
+#include "v8/include/v8.h"
+
+class CFXJSE_Arguments;
+class CFXJSE_Value;
+
+// C++ object which can be wrapped by CFXJSE_value.
+class CFXJSE_HostObject {
+ public:
+  virtual ~CFXJSE_HostObject() {}
+};
+
+typedef void (*FXJSE_FuncCallback)(CFXJSE_Value* pThis,
+                                   const CFX_ByteStringC& szFuncName,
+                                   CFXJSE_Arguments& args);
+typedef void (*FXJSE_PropAccessor)(CFXJSE_Value* pObject,
+                                   const CFX_ByteStringC& szPropName,
+                                   CFXJSE_Value* pValue);
+typedef int32_t (*FXJSE_PropTypeGetter)(CFXJSE_Value* pObject,
+                                        const CFX_ByteStringC& szPropName,
+                                        FX_BOOL bQueryIn);
+typedef FX_BOOL (*FXJSE_PropDeleter)(CFXJSE_Value* pObject,
+                                     const CFX_ByteStringC& szPropName);
+
+enum FXJSE_ClassPropTypes {
+  FXJSE_ClassPropType_None,
+  FXJSE_ClassPropType_Property,
+  FXJSE_ClassPropType_Method
+};
+
+struct FXJSE_FUNCTION_DESCRIPTOR {
+  const FX_CHAR* name;
+  FXJSE_FuncCallback callbackProc;
+};
+
+struct FXJSE_PROPERTY_DESCRIPTOR {
+  const FX_CHAR* name;
+  FXJSE_PropAccessor getProc;
+  FXJSE_PropAccessor setProc;
+};
+
+struct FXJSE_CLASS_DESCRIPTOR {
+  const FX_CHAR* name;
+  FXJSE_FuncCallback constructor;
+  const FXJSE_PROPERTY_DESCRIPTOR* properties;
+  const FXJSE_FUNCTION_DESCRIPTOR* methods;
+  int32_t propNum;
+  int32_t methNum;
+  FXJSE_PropTypeGetter dynPropTypeGetter;
+  FXJSE_PropAccessor dynPropGetter;
+  FXJSE_PropAccessor dynPropSetter;
+  FXJSE_PropDeleter dynPropDeleter;
+  FXJSE_FuncCallback dynMethodCall;
+};
+
+void FXJSE_Initialize();
+void FXJSE_Finalize();
+
+v8::Isolate* FXJSE_Runtime_Create_Own();
+void FXJSE_Runtime_Release(v8::Isolate* pIsolate);
+
+void FXJSE_ThrowMessage(const CFX_ByteStringC& utf8Message);
+
+#endif  // FXJSE_INCLUDE_FXJSE_H_