text: // 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 FXJS_XFA_CFXJSE_ENGINE_H_
  #define FXJS_XFA_CFXJSE_ENGINE_H_
  
  #include <map>
  #include <memory>
  #include <vector>
  
  #include "core/fxcrt/unowned_ptr.h"
  #include "fxjs/cfx_v8.h"
  #include "v8/include/v8.h"
  #include "xfa/fxfa/cxfa_eventparam.h"
  #include "xfa/fxfa/parser/cxfa_document.h"
  #include "xfa/fxfa/parser/cxfa_script.h"
  #include "xfa/fxfa/parser/xfa_resolvenode_rs.h"
  
  class CFXJSE_Class;
  class CFXJSE_Context;
  class CFXJSE_FormCalcContext;
  class CFXJSE_ResolveProcessor;
  class CJS_Runtime;
  class CXFA_List;
  
  // Flags for |dwStyles| argument to CFXJSE_Engine::ResolveObjects().
  #define XFA_RESOLVENODE_Children 0x0001
  #define XFA_RESOLVENODE_TagName 0x0002
  #define XFA_RESOLVENODE_Attributes 0x0004
  #define XFA_RESOLVENODE_Properties 0x0008
  #define XFA_RESOLVENODE_Siblings 0x0020
  #define XFA_RESOLVENODE_Parent 0x0040
  #define XFA_RESOLVENODE_AnyChild 0x0080
  #define XFA_RESOLVENODE_ALL 0x0100
  #define XFA_RESOLVENODE_CreateNode 0x0400
  #define XFA_RESOLVENODE_Bind 0x0800
  #define XFA_RESOLVENODE_BindNew 0x1000
  
  class CFXJSE_Engine final : public CFX_V8 {
   public:
    static CXFA_Object* ToObject(const v8::FunctionCallbackInfo<v8::Value>& info);
    static CXFA_Object* ToObject(CFXJSE_Value* pValue);
    static void GlobalPropertyGetter(CFXJSE_Value* pObject,
                                     ByteStringView szPropName,
                                     CFXJSE_Value* pValue);
    static void GlobalPropertySetter(CFXJSE_Value* pObject,
                                     ByteStringView szPropName,
                                     CFXJSE_Value* pValue);
    static void NormalPropertyGetter(CFXJSE_Value* pObject,
                                     ByteStringView szPropName,
                                     CFXJSE_Value* pValue);
    static void NormalPropertySetter(CFXJSE_Value* pObject,
                                     ByteStringView szPropName,
                                     CFXJSE_Value* pValue);
    static CJS_Result NormalMethodCall(
        const v8::FunctionCallbackInfo<v8::Value>& info,
        const WideString& functionName);
    static int32_t NormalPropTypeGetter(CFXJSE_Value* pObject,
                                        ByteStringView szPropName,
                                        bool bQueryIn);
    static int32_t GlobalPropTypeGetter(CFXJSE_Value* pObject,
                                        ByteStringView szPropName,
                                        bool bQueryIn);
  
    CFXJSE_Engine(CXFA_Document* pDocument, CJS_Runtime* fxjs_runtime);
    ~CFXJSE_Engine() override;
  
    void SetEventParam(CXFA_EventParam* param) { m_eventParam = param; }
    CXFA_EventParam* GetEventParam() const { return m_eventParam.Get(); }
    bool RunScript(CXFA_Script::Type eScriptType,
                   WideStringView wsScript,
                   CFXJSE_Value* pRetValue,
                   CXFA_Object* pThisObject);
  
    bool ResolveObjects(CXFA_Object* refObject,
                        WideStringView wsExpression,
                        XFA_RESOLVENODE_RS* resolveNodeRS,
                        uint32_t dwStyles,
                        CXFA_Node* bindNode);
    CFXJSE_Value* GetJSValueFromMap(CXFA_Object* pObject);
    void AddToCacheList(std::unique_ptr<CXFA_List> pList);
    CXFA_Object* GetThisObject() const { return m_pThisObject.Get(); }
  
    int32_t GetIndexByName(CXFA_Node* refNode);
    int32_t GetIndexByClassName(CXFA_Node* refNode);
    WideString GetSomExpression(CXFA_Node* refNode);
  
    void SetNodesOfRunScript(std::vector<CXFA_Node*>* pArray);
    void AddNodesOfRunScript(CXFA_Node* pNode);
    CFXJSE_Class* GetJseNormalClass() const { return m_pJsClass.Get(); }
  
    void SetRunAtType(XFA_AttributeValue eRunAt) { m_eRunAtType = eRunAt; }
    bool IsRunAtClient() { return m_eRunAtType != XFA_AttributeValue::Server; }
  
    CXFA_Script::Type GetType();
    std::vector<CXFA_Node*>* GetUpObjectArray() { return &m_upObjectArray; }
    CXFA_Document* GetDocument() const { return m_pDocument.Get(); }
  
    CXFA_Object* ToXFAObject(v8::Local<v8::Value> obj);
    v8::Local<v8::Value> NewXFAObject(CXFA_Object* obj,
                                      v8::Global<v8::FunctionTemplate>& tmpl);
  
   private:
    CFXJSE_Context* CreateVariablesContext(CXFA_Node* pScriptNode,
                                           CXFA_Node* pSubform);
    void RemoveBuiltInObjs(CFXJSE_Context* pContext) const;
    bool QueryNodeByFlag(CXFA_Node* refNode,
                         WideStringView propname,
                         CFXJSE_Value* pValue,
                         uint32_t dwFlag,
                         bool bSetting);
    bool IsStrictScopeInJavaScript();
    CXFA_Object* GetVariablesThis(CXFA_Object* pObject, bool bScriptNode);
    bool QueryVariableValue(CXFA_Node* pScriptNode,
                            ByteStringView szPropName,
                            CFXJSE_Value* pValue,
                            bool bGetter);
    bool RunVariablesScript(CXFA_Node* pScriptNode);
  
    UnownedPtr<CJS_Runtime> const m_pSubordinateRuntime;
    UnownedPtr<CXFA_Document> const m_pDocument;
    std::unique_ptr<CFXJSE_Context> m_JsContext;
    UnownedPtr<CFXJSE_Class> m_pJsClass;
    CXFA_Script::Type m_eScriptType = CXFA_Script::Type::Unknown;
    std::map<CXFA_Object*, std::unique_ptr<CFXJSE_Value>> m_mapObjectToValue;
    std::map<CXFA_Object*, std::unique_ptr<CFXJSE_Context>>
        m_mapVariableToContext;
    UnownedPtr<CXFA_EventParam> m_eventParam;
    std::vector<CXFA_Node*> m_upObjectArray;
    // CacheList holds the List items so we can clean them up when we're done.
    std::vector<std::unique_ptr<CXFA_List>> m_CacheList;
    UnownedPtr<std::vector<CXFA_Node*>> m_pScriptNodeArray;
    std::unique_ptr<CFXJSE_ResolveProcessor> const m_ResolveProcessor;
    std::unique_ptr<CFXJSE_FormCalcContext> m_FM2JSContext;
    UnownedPtr<CXFA_Object> m_pThisObject;
    XFA_AttributeValue m_eRunAtType = XFA_AttributeValue::Client;
  };
  
  #endif  //  FXJS_XFA_CFXJSE_ENGINE_H_
  