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1  // Copyright 2014 PDFium Authors. All rights reserved.
2  // Use of this source code is governed by a BSD-style license that can be
3  // found in the LICENSE file.
4  
5  // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6  
7  #ifndef FXJS_CFXJSE_RESOLVEPROCESSOR_H_
8  #define FXJS_CFXJSE_RESOLVEPROCESSOR_H_
9  
10  #include <memory>
11  #include <vector>
12  
13  #include "xfa/fxfa/parser/xfa_resolvenode_rs.h"
14  
15  class CXFA_NodeHelper;
16  class CFXJSE_Engine;
17  
18  class CFXJSE_ResolveNodeData {
19   public:
20    explicit CFXJSE_ResolveNodeData(CFXJSE_Engine* pSC);
21    ~CFXJSE_ResolveNodeData();
22  
23    CFXJSE_Engine* m_pSC;
24    CXFA_Object* m_CurObject;
25    WideString m_wsName;
26    XFA_HashCode m_uHashName;
27    WideString m_wsCondition;
28    int32_t m_nLevel;
29    std::vector<CXFA_Object*> m_Objects;  // Not owned.
30    uint32_t m_dwStyles;
31    const XFA_SCRIPTATTRIBUTEINFO* m_pScriptAttribute;
32    XFA_ResolveNode_RSType m_dwFlag;
33  };
34  
35  class CFXJSE_ResolveProcessor {
36   public:
37    CFXJSE_ResolveProcessor();
38    ~CFXJSE_ResolveProcessor();
39  
40    bool Resolve(CFXJSE_ResolveNodeData& rnd);
41    int32_t GetFilter(const WideStringView& wsExpression,
42                      int32_t nStart,
43                      CFXJSE_ResolveNodeData& rnd);
44    void SetIndexDataBind(WideString& wsNextCondition,
45                          int32_t& iIndex,
46                          int32_t iCount);
SetCurStart(int32_t start)47    void SetCurStart(int32_t start) { m_iCurStart = start; }
48  
GetNodeHelper()49    CXFA_NodeHelper* GetNodeHelper() const { return m_pNodeHelper.get(); }
50  
51   private:
52    bool ResolveForAttributeRs(CXFA_Object* curNode,
53                               CFXJSE_ResolveNodeData& rnd,
54                               const WideStringView& strAttr);
55    bool ResolveAnyChild(CFXJSE_ResolveNodeData& rnd);
56    bool ResolveDollar(CFXJSE_ResolveNodeData& rnd);
57    bool ResolveExcalmatory(CFXJSE_ResolveNodeData& rnd);
58    bool ResolveNumberSign(CFXJSE_ResolveNodeData& rnd);
59    bool ResolveAsterisk(CFXJSE_ResolveNodeData& rnd);
60    bool ResolveNormal(CFXJSE_ResolveNodeData& rnd);
61    void SetStylesForChild(uint32_t dwParentStyles, CFXJSE_ResolveNodeData& rnd);
62  
63    void ConditionArray(int32_t iCurIndex,
64                        WideString wsCondition,
65                        int32_t iFoundCount,
66                        CFXJSE_ResolveNodeData& rnd);
67    void DoPredicateFilter(int32_t iCurIndex,
68                           WideString wsCondition,
69                           int32_t iFoundCount,
70                           CFXJSE_ResolveNodeData& rnd);
71    void FilterCondition(CFXJSE_ResolveNodeData& rnd, WideString wsCondition);
72  
73    int32_t m_iCurStart;
74    std::unique_ptr<CXFA_NodeHelper> m_pNodeHelper;
75  };
76  
77  #endif  // FXJS_CFXJSE_RESOLVEPROCESSOR_H_
78