219 lines
8.2 KiB
C
219 lines
8.2 KiB
C
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// Copyright 2014 The PDFium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef FXJS_XFA_CFXJSE_ENGINE_H_
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#define FXJS_XFA_CFXJSE_ENGINE_H_
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#include <map>
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#include <memory>
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#include <type_traits>
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#include <vector>
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#include "core/fxcrt/mask.h"
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#include "core/fxcrt/unowned_ptr.h"
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#include "fxjs/cfx_v8.h"
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#include "v8/include/cppgc/persistent.h"
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#include "v8/include/v8-forward.h"
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#include "v8/include/v8-persistent-handle.h"
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#include "xfa/fxfa/cxfa_eventparam.h"
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#include "xfa/fxfa/parser/cxfa_document.h"
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#include "xfa/fxfa/parser/cxfa_script.h"
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#include "xfa/fxfa/parser/xfa_basic_data.h"
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class CFXJSE_Class;
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class CFXJSE_Context;
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class CFXJSE_FormCalcContext;
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class CFXJSE_HostObject;
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class CFXJSE_NodeHelper;
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class CFXJSE_ResolveProcessor;
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class CFXJSE_Value;
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class CJS_Runtime;
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enum class XFA_ResolveFlag : uint16_t {
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kChildren = 1 << 0,
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kTagName = 1 << 1,
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kAttributes = 1 << 2,
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kProperties = 1 << 3,
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kSiblings = 1 << 5,
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kParent = 1 << 6,
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kAnyChild = 1 << 7,
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kALL = 1 << 8,
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kCreateNode = 1 << 10,
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kBind = 1 << 11,
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kBindNew = 1 << 12,
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};
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class CFXJSE_Engine final : public CFX_V8 {
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public:
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class ResolveResult {
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CPPGC_STACK_ALLOCATED(); // Allow raw/unowned pointers.
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public:
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enum class Type {
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kNodes = 0,
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kAttribute,
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kCreateNodeOne,
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kCreateNodeAll,
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kCreateNodeMidAll,
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kExistNodes,
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};
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ResolveResult();
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ResolveResult(const ResolveResult& that);
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ResolveResult& operator=(const ResolveResult& that);
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~ResolveResult();
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Type type = Type::kNodes;
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XFA_SCRIPTATTRIBUTEINFO script_attribute = {};
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// Vector of Member would be correct for stack-based vectors, if
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// STL worked with cppgc.
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std::vector<cppgc::Member<CXFA_Object>> objects;
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};
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static CXFA_Object* ToObject(const v8::FunctionCallbackInfo<v8::Value>& info);
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static CXFA_Object* ToObject(v8::Isolate* pIsolate,
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v8::Local<v8::Value> value);
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static CXFA_Object* ToObject(v8::Isolate* pIsolate, CFXJSE_Value* pValue);
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static CXFA_Object* ToObject(CFXJSE_HostObject* pHostObj);
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static v8::Local<v8::Value> GlobalPropertyGetter(
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v8::Isolate* pIsolate,
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v8::Local<v8::Object> pObject,
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ByteStringView szPropName);
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static void GlobalPropertySetter(v8::Isolate* pIsolate,
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v8::Local<v8::Object> pObject,
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ByteStringView szPropName,
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v8::Local<v8::Value> pValue);
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static v8::Local<v8::Value> NormalPropertyGetter(
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v8::Isolate* pIsolate,
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v8::Local<v8::Object> pObject,
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ByteStringView szPropName);
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static void NormalPropertySetter(v8::Isolate* pIsolate,
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v8::Local<v8::Object> pObject,
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ByteStringView szPropName,
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v8::Local<v8::Value> pValue);
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static CJS_Result NormalMethodCall(
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const v8::FunctionCallbackInfo<v8::Value>& info,
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const WideString& functionName);
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static FXJSE_ClassPropType NormalPropTypeGetter(v8::Isolate* pIsolate,
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v8::Local<v8::Object> pObject,
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ByteStringView szPropName,
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bool bQueryIn);
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static FXJSE_ClassPropType GlobalPropTypeGetter(v8::Isolate* pIsolate,
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v8::Local<v8::Object> pObject,
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ByteStringView szPropName,
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bool bQueryIn);
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CFXJSE_Engine(CXFA_Document* pDocument, CJS_Runtime* fxjs_runtime);
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~CFXJSE_Engine() override;
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class EventParamScope {
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CPPGC_STACK_ALLOCATED();
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public:
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EventParamScope(CFXJSE_Engine* pEngine,
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CXFA_Node* pTarget,
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CXFA_EventParam* pEventParam);
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~EventParamScope();
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private:
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UnownedPtr<CFXJSE_Engine> m_pEngine;
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UnownedPtr<CXFA_Node> m_pPrevTarget;
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UnownedPtr<CXFA_EventParam> m_pPrevEventParam;
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};
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friend class EventParamScope;
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CXFA_Node* GetEventTarget() const { return m_pTarget; }
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CXFA_EventParam* GetEventParam() const { return m_eventParam; }
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bool RunScript(CXFA_Script::Type eScriptType,
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WideStringView wsScript,
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CFXJSE_Value* pRetValue,
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CXFA_Object* pThisObject);
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absl::optional<ResolveResult> ResolveObjects(CXFA_Object* refObject,
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WideStringView wsExpression,
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Mask<XFA_ResolveFlag> dwStyles);
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absl::optional<ResolveResult> ResolveObjectsWithBindNode(
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CXFA_Object* refObject,
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WideStringView wsExpression,
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Mask<XFA_ResolveFlag> dwStyles,
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CXFA_Node* bindNode);
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v8::Local<v8::Object> GetOrCreateJSBindingFromMap(CXFA_Object* pObject);
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CXFA_Object* GetThisObject() const { return m_pThisObject; }
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CFXJSE_Class* GetJseNormalClass() const { return m_pJsClass; }
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CXFA_Document* GetDocument() const { return m_pDocument.Get(); }
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void SetNodesOfRunScript(std::vector<cppgc::Persistent<CXFA_Node>>* pArray);
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void AddNodesOfRunScript(CXFA_Node* pNode);
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void SetRunAtType(XFA_AttributeValue eRunAt) { m_eRunAtType = eRunAt; }
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bool IsRunAtClient() { return m_eRunAtType != XFA_AttributeValue::Server; }
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CXFA_Script::Type GetType();
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void AddObjectToUpArray(CXFA_Node* pNode);
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CXFA_Node* LastObjectFromUpArray();
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CXFA_Object* ToXFAObject(v8::Local<v8::Value> obj);
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v8::Local<v8::Object> NewNormalXFAObject(CXFA_Object* obj);
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bool IsResolvingNodes() const { return m_bResolvingNodes; }
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CFXJSE_Context* GetJseContextForTest() const { return GetJseContext(); }
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private:
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CFXJSE_Context* GetJseContext() const { return m_JsContext.get(); }
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CFXJSE_Context* CreateVariablesContext(CXFA_Script* pScriptNode,
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CXFA_Node* pSubform);
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void RemoveBuiltInObjs(CFXJSE_Context* pContext);
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bool QueryNodeByFlag(CXFA_Node* refNode,
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WideStringView propname,
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v8::Local<v8::Value>* pValue,
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Mask<XFA_ResolveFlag> dwFlag);
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bool UpdateNodeByFlag(CXFA_Node* refNode,
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WideStringView propname,
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v8::Local<v8::Value> pValue,
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Mask<XFA_ResolveFlag> dwFlag);
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bool IsStrictScopeInJavaScript();
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CXFA_Object* GetVariablesThis(CXFA_Object* pObject);
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CXFA_Object* GetVariablesScript(CXFA_Object* pObject);
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CFXJSE_Context* VariablesContextForScriptNode(CXFA_Script* pScriptNode);
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bool QueryVariableValue(CXFA_Script* pScriptNode,
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ByteStringView szPropName,
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v8::Local<v8::Value>* pValue);
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bool UpdateVariableValue(CXFA_Script* pScriptNode,
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ByteStringView szPropName,
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v8::Local<v8::Value> pValue);
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void RunVariablesScript(CXFA_Script* pScriptNode);
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UnownedPtr<CJS_Runtime> const m_pSubordinateRuntime;
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cppgc::WeakPersistent<CXFA_Document> const m_pDocument;
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std::unique_ptr<CFXJSE_Context> m_JsContext;
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UnownedPtr<CFXJSE_Class> m_pJsClass;
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CXFA_Script::Type m_eScriptType = CXFA_Script::Type::Unknown;
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// |m_mapObjectToValue| is what ensures the v8 object bound to a
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// CJX_Object remains valid for the lifetime of the engine.
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std::map<cppgc::Persistent<CJX_Object>, v8::Global<v8::Object>>
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m_mapObjectToObject;
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std::map<cppgc::Persistent<CJX_Object>, std::unique_ptr<CFXJSE_Context>>
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m_mapVariableToContext;
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cppgc::Persistent<CXFA_Node> m_pTarget;
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UnownedPtr<CXFA_EventParam> m_eventParam;
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std::vector<cppgc::Persistent<CXFA_Node>> m_upObjectArray;
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UnownedPtr<std::vector<cppgc::Persistent<CXFA_Node>>> m_pScriptNodeArray;
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std::unique_ptr<CFXJSE_NodeHelper> const m_NodeHelper;
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std::unique_ptr<CFXJSE_ResolveProcessor> const m_ResolveProcessor;
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std::unique_ptr<CFXJSE_FormCalcContext> m_FormCalcContext;
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cppgc::Persistent<CXFA_Object> m_pThisObject;
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XFA_AttributeValue m_eRunAtType = XFA_AttributeValue::Client;
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bool m_bResolvingNodes = false;
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};
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#endif // FXJS_XFA_CFXJSE_ENGINE_H_
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